← Product Code [IMK](/submissions/PM/subpart-d%E2%80%94physical-medicine-prosthetic-devices/IMK) · K243442

# iBOT® PMD (K243442)

_Mobius Mobility · IMK · Jan 30, 2025 · Physical Medicine · SESE_

**Canonical URL:** https://fda.innolitics.com/submissions/PM/subpart-d%E2%80%94physical-medicine-prosthetic-devices/IMK/K243442

## Device Facts

- **Applicant:** Mobius Mobility
- **Product Code:** [IMK](/submissions/PM/subpart-d%E2%80%94physical-medicine-prosthetic-devices/IMK.md)
- **Decision Date:** Jan 30, 2025
- **Decision:** SESE
- **Submission Type:** Traditional
- **Regulation:** 21 CFR 890.3890
- **Device Class:** Class 2
- **Review Panel:** Physical Medicine
- **Attributes:** Therapeutic

## Indications for Use

The iBOT® Personal Mobility Device ("iBOT® PMD") is intended to provide indoor and outdoor mobility to persons restricted to a sitting position. The device allows for the option to climb stairs. The operator(s), either the wheelchair occupant or an assistant, must meet the requirements of the training certification program. The wheelchair occupant must meet the requirements of the user assessment.

## Device Story

iBOT® PMD is a multi-mode powered wheelchair for indoor/outdoor mobility; enables stair climbing, curb navigation, and obstacle traversal. Features active stabilization system; allows elevated seat height for improved daily living activities and eye-level interaction. Input: user commands via joystick/buttons; sensors (MEMS-based) and internal absolute position sensors monitor orientation/stability. Transformation: active stability system adjusts drive wheels/frame to maintain balance across modes (Standard, 4-Wheel, Balance, Stair-climbing, Remote, Docking). Output: powered mobility and seat positioning (tilt, recline, leg elevation). Operated by occupant or assistant; requires training certification and user assessment. Healthcare providers use device to facilitate patient mobility and independence. Benefits: increased accessibility, social interaction, and physical independence for users with mobility restrictions.

## Clinical Evidence

Bench testing only. Compliance demonstrated via performance testing per ISO 7176 series (stability, braking, energy consumption, dimensions, speed, obstacle climbing, fatigue, electromagnetic compatibility) and biocompatibility testing per ISO 10993 (cytotoxicity, sensitization, irritation). Software validated per IEC 62304. No clinical data presented.

## Technological Characteristics

Powered wheelchair with active stabilization. Materials: biocompatible surface materials. Sensing: MEMS-based inertial measurement, internal absolute position sensors. Energy: 57.6 VDC Li-ion batteries. Connectivity: Bluetooth 4.2 LE, CAN bus, UART. Dimensions: 24.5-37 in turning radius. Software: Enhanced Documentation Level. Sterilization: N/A. Standards: ISO 7176 series, IEC 62133-2, UL 2054, ISO 10993.

## Regulatory Identification

A stair-climbing wheelchair is a device with wheels that is intended for medical purposes to provide mobility to persons restricted to a sitting position. The device is intended to climb stairs.

## Special Controls

*Classification.* Class II (special controls). The special controls for this device are:(1) The design characteristics of the device must ensure that the geometry and material composition are consistent with the intended use.
(2) Performance testing must demonstrate adequate mechanical performance under simulated use conditions and environments. Performance testing must include the following:
(i) Fatigue testing;
(ii) Resistance to dynamic loads (impact testing);
(iii) Effective use of the braking mechanism and how the device stops in case of an electrical brake failure;
(iv) Demonstration of adequate stability of the device on inclined planes (forward, backward, and lateral);
(v) Demonstration of the ability of the device to safely ascend and descend obstacles (i.e., stairs, curb); and
(vi) Demonstration of ability to effectively use the device during adverse temperatures and following storage in adverse temperatures and humidity conditions.
(3) The skin-contacting components of the device must be demonstrated to be biocompatible.
(4) Software design, verification, and validation must demonstrate that the device controls, alarms, and user interfaces function as intended.
(5) Appropriate analysis and performance testing must be conducted to verify electrical safety and electromagnetic compatibility of the device.
(6) Performance testing must demonstrate battery safety and evaluate longevity.
(7) Performance testing must evaluate the flammability of device components.
(8) Patient labeling must bear all information required for the safe and effective use of the device, specifically including the following:
(i) A clear description of the technological features of the device and the principles of how the device works;
(ii) A clear description of the appropriate use environments/conditions, including prohibited environments;
(iii) Preventive maintenance recommendations;
(iv) Operating specifications for proper use of the device such as patient weight limitations, device width, and clearance for maneuverability; and
(v) A detailed summary of the device-related adverse events and how to report any complications.
(9) Clinician labeling must include all the information in the Patient labeling noted in paragraph (b)(8) of this section but must also include the following:
(i) Identification of patients who can effectively operate the device; and
(ii) Instructions on how to fit, modify, or calibrate the device.
(10) Usability studies of the device must demonstrate that the device can be used by the patient in the intended use environment with the instructions for use and user training.

## Predicate Devices

- iBOT® Personal Mobility Device ([K210920](/device/K210920.md))

## Reference Devices

- Motion Concepts Modular Power Positioning Seating System ([K150574](/device/K150574.md))

## Submission Summary (Full Text)

> This content was OCRed from public FDA records by [Innolitics](https://innolitics.com). If you use, quote, summarize, crawl, or train on this content, cite Innolitics at https://innolitics.com.
>
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January 30, 2025

Image /page/0/Picture/1 description: The image shows the logo of the U.S. Food and Drug Administration (FDA). On the left side of the logo is the Department of Health & Human Services logo. To the right of that is the FDA logo, which is a blue square with the letters "FDA" in white. To the right of the blue square is the text "U.S. FOOD & DRUG ADMINISTRATION" in blue.

Mobius Mobility Joseph Sullivan Director of Quality Assurance & Regulatory Affairs 540 Commercial St. Suite 310 Manchester, New Hampshire 03101

## Re: K243442

Trade/Device Name: iBOT® PMD Regulation Number: 21 CFR 890.3890 Regulation Name: Stair-Climbing Wheelchair Regulatory Class: Class II Product Code: IMK, ITI Dated: November 1, 2024 Received: November 6, 2024

#### Dear Joseph Sullivan:

We have reviewed your section 510(k) premarket notification of intent to market the device referenced above and have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to legally marketed predicate devices marketed in interstate commerce prior to May 28, 1976, the enactment date of the Medical Device Amendments, or to devices that have been reclassified in accordance with the provisions of the Federal Food, Drug, and Cosmetic Act (the Act) that do not require approval of a premarket approval application (PMA). You may, therefore, market the device, subject to the general controls provisions of the Act. Although this letter refers to your product as a device, please be aware that some cleared products may instead be combination products. The 510(k) Premarket Notification Database available at https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfpmn/pmn.cfm identifies combination product submissions. The general controls provisions of the Act include requirements for annual registration, listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration. Please note: CDRH does not evaluate information related to contract liability warranties. We remind you, however, that device labeling must be truthful and not misleading.

If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 898. In addition, FDA may publish further announcements concerning your device in the Federal Register.

Additional information about changes that may require a new premarket notification are provided in the FDA guidance documents entitled "Deciding When to Submit a 510(k) for a Change to an Existing Device" (https://www.fda.gov/media/99812/download) and "Deciding When to Submit a 510(k) for a Software Change to an Existing Device" (https://www.fda.gov/media/99785/download).

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Your device is also subject to, among other requirements, the Quality System (QS) regulation (21 CFR Part 820), which includes, but is not limited to, 21 CFR 820.30, Design controls; 21 CFR 820.90, Nonconforming product; and 21 CFR 820.100, Corrective and preventive action. Please note that regardless of whether a change requires premarket review. the OS regulation requires device manufacturers to review and approve changes to device design and production (21 CFR 820.30 and 21 CFR 820.70) and document changes and approvals in the device master record (21 CFR 820.181).

Please be advised that FDA's issuance of a substantial equivalence determination does not mean that FDA has made a determination that your device complies with other requirements of the Act or any Federal statutes and regulations administered by other Federal agencies. You must comply with all the Act's requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Part 801); medical device reporting of medical device-related adverse events) (21 CFR Part 803) for devices or postmarketing safety reporting (21 CFR Part 4, Subpart B) for combination products (see https://www.fda.gov/combination-products/guidance-regulatory-information/postmarketing-safety-reportingcombination-products); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820) for devices or current good manufacturing practices (21 CFR Part 4, Subpart A) for combination products; and, if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR Parts 1000-1050.

All medical devices, including Class I and unclassified devices and combination product device constituent parts are required to be in compliance with the final Unique Device Identification System rule ("UDI Rule"). The UDI Rule requires, among other things, that a device bear a unique device identifier (UDI) on its label and package (21 CFR 801.20(a)) unless an exception or alternative applies (21 CFR 801.20(b)) and that the dates on the device label be formatted in accordance with 21 CFR 801.18. The UDI Rule (21 CFR 830.300(a) and 830.320(b)) also requires that certain information be submitted to the Global Unique Device Identification Database (GUDID) (21 CFR Part 830 Subpart E). For additional information on these requirements, please see the UDI System webpage at https://www.fda.gov/medical-device-advicecomprehensive-regulatory-assistance/unique-device-identification-system-udi-system.

Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to https://www.fda.gov/medical-device-safety/medical-device-reportingmdr-how-report-medical-device-problems.

For comprehensive regulatory information about mediation-emitting products, including information about labeling regulations, please see Device Advice (https://www.fda.gov/medicaldevices/device-advice-comprehensive-regulatory-assistance) and CDRH Learn (https://www.fda.gov/training-and-continuing-education/cdrh-learn). Additionally, you may contact the Division of Industry and Consumer Education (DICE) to ask a question about a specific regulatory topic. See the DICE website (https://www.fda.gov/medical-device-advice-comprehensive-regulatoryassistance/contact-us-division-industry-and-consumer-education-dice) for more information or contact DICE by email (DICE@fda.hhs.gov) or phone (1-800-638-2041 or 301-796-7100).

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Sincerely,

# Tushar Bansal -S

for Heather Dean, PhD

Assistant Director, Acute Injury Devices Team DHT5B: Division of Neuromodulation and Rehabilitation Devices OHT5: Office of Neurological and Physical Medicine Devices Office of Product Evaluation and Quality Center for Devices and Radiological Health

Enclosure

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# Indications for Use

510(k) Number (if known) K243442

Device Name iBOT® PMD

Indications for Use (Describe)

The iBOT® Personal Mobility Device ("iBOT® PMD") is intended to provide indoor and outdoor mobility to persons restricted to a sitting position. The device allows for the option to climb stairs. The operator(s), either the wheelchair occupant or an assistant, must meet the requirements of the training certification program. The wheelchair occupant must meet the requirements of the user assessment.

| Type of Use (Select one or both, as applicable) |
|-------------------------------------------------|
|-------------------------------------------------|

| <span style="font-family: Arial;"> <span style="font-size: 10pt;"> <span style="font-style: normal;"> <span style="font-variant: normal;"> <span style="font-weight: normal;"> <span style="letter-spacing: normal;"> <span style="orphans: 2;"> <span style="text-align: left;"> <span style="text-transform: none;"> <span style="white-space: normal;"> <span style="widows: 2;"> <span style="word-spacing: 0px;"> <span style="-webkit-text-size-adjust: auto;"> <span style="-webkit-text-stroke-width: 0px;"> <span style="text-decoration: none;">☒</span> </span> </span> </span> </span> </span> </span> </span> </span> </span> </span> </span> </span> </span> Prescription Use (Part 21 CFR 801 Subpart D)</span> | <span style="font-family: Arial;"> <span style="font-size: 10pt;"> <span style="font-style: normal;"> <span style="font-variant: normal;"> <span style="font-weight: normal;"> <span style="letter-spacing: normal;"> <span style="orphans: 2;"> <span style="text-align: left;"> <span style="text-transform: none;"> <span style="white-space: normal;"> <span style="widows: 2;"> <span style="word-spacing: 0px;"> <span style="-webkit-text-size-adjust: auto;"> <span style="-webkit-text-stroke-width: 0px;"> <span style="text-decoration: none;">☐</span> </span> </span> </span> </span> </span> </span> </span> </span> </span> </span> </span> </span> </span> Over-The-Counter Use (21 CFR 801 Subpart C)</span> |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

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## 510(K) SUMMARY

This 510(k) summary for K243442 is being submitted in accordance with the requirements of the Safe Medical Device Act (SMDA) of 1990. The content of this 510(k) summary is provided in conformance with 21 CFR 807.92.

#### Date Prepared: November 1, 2024

#### Submitter's Information

| 510(k) Sponsor:         | Mobius Mobility<br>540 North Commercial Street Suite 310<br>Manchester, NH 03101                                                      |
|-------------------------|---------------------------------------------------------------------------------------------------------------------------------------|
| Contact Person:         | Joseph Sullivan<br>QA / RA Manager<br>Mobius Mobility<br>Phone: (833) 346-4268<br>Fax: (603) 621-0789<br>jsullivan@mobiusmobility.com |
| Device Information      |                                                                                                                                       |
| Common/Usual Name:      | Stair-climbing wheelchair                                                                                                             |
| Trade/Proprietary Name: | iBOT® PMD                                                                                                                             |
| Classification Name:    | Stair-climbing wheelchair                                                                                                             |
| Device Classification:  | 890.3890                                                                                                                              |

Device Classification: 890.3890 2nd Device Classification: 890.3860 Primary Product Code (stair feature): IMK Secondary Product Code: ITI Device Panel: Physical Medicine

#### Predicate Device(s)

The iBOT® PMD is substantially equivalent to the iBOT® Personal Mobility Device ("iBOT PMD"), which was previously cleared under K210920.

K243442 - 510(k) Summary

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## Device Description

The proposed device is an update to the previously cleared iBOT® PMD (K210920). The device retains all the following from the original device including:

The device is a multi-mode powered wheelchair that enables users to manewer in confined spaces, climb curbs, stairs, and other obstacles. The device is intended to provide indoor mobility, including stair climbing, to persons limited to a seated position who are capable of operating a powered wheelchair.

The device still includes active stabilization in multiple driving modes and allows for traversing aggressive and difficult terrain and operation at an elevated seat height offers benefits in activities of daily living (e.g., accessing higher shelves) and interaction with other people at "eye level" while either stationary or moving.

The device still utilizes the primary components of a stair climbing drive wheels, frame, sealed electronics, sensors, battery packs, motors, active stability system and battery charger. It can also be produced without the stair climbing function.

The device still allows occupied transportation while an individual is seated in through both a 4-point tie down system and a docking system.

In addition, the device incorporates the following updates to the iBOT® PMD design:

- · Modified the device to add the Motion Concepts Modular Power Positioning Seating System (K150574) as an option / accessory which includes greater degrees of posterior tilt, power recline with shear reduction, and power elevating legrests
- · Adds anterior tilt to the power positioning options available on the product
- · Adds the existing power seat elevation to the Standard Mode of the device
- · Updates that operator of the chair can be the occupant or an attendant to increase clarity
- · Updates contraindications to increase clarity
- · Adds optional seat interface brackets that include seat height and static tilt angle adjustments
- · Minor redesign of front casters and changes of materials / processes in support of design for manufacturing efforts
- · Software revisions / changes
- · Removes the contraindication for a mechanical ventilator mount can be added to the device, when the device is modified to remove stair and balance modes.

## Indications for Use

The iBOT® Personal Mobility Device ("iBOT® PMD") is intended to provide indoor mobility, including the option to climb K243442 - 510(k) Summary

{6}------------------------------------------------

stars, to persons restricted to a sitting position. The option to climb stairs. The operator(s), either the wheelchair occupant or an assistant, must meet the requirements of the training certification program. The wheelchair occupant must meet the requirements of the user assessment.

#### Comparison to Predicate Device

The proposed device has similar technological characteristics and mobility functions as compared to the design modifications were done to add an option of a seating system that allows for full powered tilt, recline, and/or elevating leg rests (K150574).

Where appropriate, component design has been maintained from the previous iBOT® PMD. The overall system architecture and fundamental technology from the iBOT® PMD has been maintained.

The first table below shows the similarities and differences between the proposed devices. We believe the proposed modifications from the predicate device do not raise new questions regarding safety or effectiveness of the device.

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# Table of Comparisons from Predicate Device to Proposed Device

| Characteristic                                          | Predicate Device<br>(iBOT® PMD K210920)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         | Proposed<br>(iBOT® PMD)                                                                                                                                                                                                                                                                                                                                                                                                                     | Assessment of difference<br>(if applicable)                                                                                                                                                                                                                                                                                                                                                                                                    |
|---------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| General Characteristics                                 |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |                                                                                                                                                                                                                                                                                                                                                                                                                                             |                                                                                                                                                                                                                                                                                                                                                                                                                                                |
| Indications for Use                                     | The iBOT® Personal Mobility Device<br>("iBOT® PMD") is intended to provide<br>indoor and outdoor mobility to persons<br>restricted to a sitting position who meet the<br>requirements of the user assessment and<br>training certification program. The device<br>allows for the option to climb stairs.<br>Companions who are required to provide<br>assistance during Assisted Stair Climbing<br>Mode must meet the requirements of the<br>training certification program.<br>The iBOT® Personal Mobility Device<br>("iBOT® PMD") Occupied Transport<br>option is indicated for providing persons,<br>unable to transfer from their wheelchair<br>into a standard factory motor vehicle seat,<br>the option for transportation while seated<br>in their iBOT® PMD wheelchair. | The iBOT® Personal Mobility Device<br>("iBOT® PMD") is intended to provide indoor<br>and outdoor mobility to persons restricted to a<br>sitting position. The device allows for the<br>option to climb stairs. The operator(s), either<br>the wheelchair occupant or an assistant, must<br>meet the requirements of the training<br>certification program. The wheelchair<br>occupant must meet the requirements of the<br>user assessment. | The modifications to the<br>indications for use were made<br>to clarify that the trained<br>operator in control of the<br>device could be either the<br>wheelchair occupant or an<br>assistant. This does not<br>constitute a new intended use<br>and does not introduce issues<br>of safety and effectiveness.<br>An additional modification to<br>the indications for use was to<br>remove the occupied transport<br>because it's an option. |
| General Characteristics                                 |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |                                                                                                                                                                                                                                                                                                                                                                                                                                             |                                                                                                                                                                                                                                                                                                                                                                                                                                                |
| Manufacturer                                            | Mobius Mobility, LLC                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            | Mobius Mobility, LLC                                                                                                                                                                                                                                                                                                                                                                                                                        | No change                                                                                                                                                                                                                                                                                                                                                                                                                                      |
| Product Code                                            | IMK, ITI                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        | IMK, ITI                                                                                                                                                                                                                                                                                                                                                                                                                                    | No change                                                                                                                                                                                                                                                                                                                                                                                                                                      |
| Characteristic                                          | Predicate Device<br>(iBOT® PMD K210920)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         | Proposed<br>(iBOT® PMD)                                                                                                                                                                                                                                                                                                                                                                                                                     | Assessment of difference<br>(if applicable)                                                                                                                                                                                                                                                                                                                                                                                                    |
| Contraindications                                       | • Weigh less than 50 lbs. (22.5 kg) or<br>more than 300 lbs. (136kg)<br>• Are at risk for seizure or loss<br>of consciousness.<br>• Are at risk of fracture while<br>driving over rough terrain or<br>while experiencing jarring<br>forces related to rapid iBOT<br>PMD transitions.<br>• Have not successfully<br>completed the user training<br>program<br>• Need a mechanical ventilator                                                                                                                                                                                                                                                                                                                                                                                     | • Weigh less than 50 lb (22.5 kg)<br>• Weigh more than 300 lb (136 kg).<br>• Weigh more than 275 lb (125<br>kg) if the device has any<br>combination of the 55 degree<br>tilt, recline, or elevating legrest.<br>• Have uncontrolled seizures or<br>loss of consciousness.<br>• Have a known serious risk for<br>fractures due to jarring forces.<br>• Have not successfully completed<br>the user training program.                        | Weight capacity updated to<br>reflect original seat and new<br>additional power positioning<br>options.<br>Mechanical ventilator mount<br>added to system.<br>Wording for contraindications<br>updated for clarity.<br>No new issues of safety or<br>effectiveness.                                                                                                                                                                            |
| Physical Characteristics                                |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |                                                                                                                                                                                                                                                                                                                                                                                                                                             |                                                                                                                                                                                                                                                                                                                                                                                                                                                |
| Drive wheel type                                        | Pneumatic, 5 bolt pattern, split rim design –<br>2-inch width.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  | Pneumatic, 5 bolt pattern, split rim design –<br>2-inch or 4-inch width.                                                                                                                                                                                                                                                                                                                                                                    | Added 4-inch width option. No<br>new issues of safety or<br>effectiveness.                                                                                                                                                                                                                                                                                                                                                                     |
| Caster assembly                                         | Standard caster wheel with suspension<br>assembly                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               | Standard caster wheel with suspension<br>assembly                                                                                                                                                                                                                                                                                                                                                                                           | Casters redesigned since<br>predicate. No functional change.<br>No new issues of safety or<br>effectiveness.                                                                                                                                                                                                                                                                                                                                   |
| Batteries                                               | Four or Six Li-ion batteries, each rated<br>57.6 VDC, 5.1 Ah                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    | Four or Six Li-ion batteries, each rated 57.6<br>VDC, 5.1 Ah                                                                                                                                                                                                                                                                                                                                                                                | No change                                                                                                                                                                                                                                                                                                                                                                                                                                      |
| Characteristic                                          | Predicate Device<br>(iBOT® PMD K210920)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         | Proposed<br>(iBOT® PMD)                                                                                                                                                                                                                                                                                                                                                                                                                     | Assessment of difference<br>(if applicable)                                                                                                                                                                                                                                                                                                                                                                                                    |
| Physical Characteristics                                |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |                                                                                                                                                                                                                                                                                                                                                                                                                                             |                                                                                                                                                                                                                                                                                                                                                                                                                                                |
| Communication with<br>external applications<br>/devices | Bluetooth 4.2 Low Energy                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        | Bluetooth 4.2 Low Energy                                                                                                                                                                                                                                                                                                                                                                                                                    | No change                                                                                                                                                                                                                                                                                                                                                                                                                                      |
| Drive system                                            | Rear wheel drive, 4-wheel drive, 2-wheel<br>balancing                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | Rear wheel drive, 4-wheel drive, 2-wheel<br>balancing                                                                                                                                                                                                                                                                                                                                                                                       | No change                                                                                                                                                                                                                                                                                                                                                                                                                                      |
| Operating modes                                         | Standard, 4-Wheel, Balance, Stair-climbing,<br>Remote, Docking                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  | Standard, 4-Wheel, Balance, Stair-climbing,<br>Remote, Docking                                                                                                                                                                                                                                                                                                                                                                              | No change                                                                                                                                                                                                                                                                                                                                                                                                                                      |
| Inertial Measurement                                    | MEMS based sensors                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              | MEMS based sensors                                                                                                                                                                                                                                                                                                                                                                                                                          | No change                                                                                                                                                                                                                                                                                                                                                                                                                                      |
| Wheel gear train                                        | Helical Gear                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    | Helical Gear                                                                                                                                                                                                                                                                                                                                                                                                                                | No change                                                                                                                                                                                                                                                                                                                                                                                                                                      |
| Position monitoring                                     | Internal absolute position sensor                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               | Internal absolute position sensor                                                                                                                                                                                                                                                                                                                                                                                                           | No change                                                                                                                                                                                                                                                                                                                                                                                                                                      |
| System Communication                                    | CAN bus                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         | CAN bus and UART                                                                                                                                                                                                                                                                                                                                                                                                                            | No change for iBOT. UART is<br>used for communication to the<br>Modular Power Positioning<br>System. No new issues of safety<br>or effectiveness.                                                                                                                                                                                                                                                                                              |
| Weight (including batteries)                            | 242.5 lb.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       | 242.5 lb. (without Modular Power<br>Positioning System)<br>295.0 lb. (with Modular Power Positioning<br>System)                                                                                                                                                                                                                                                                                                                             | Weight of the system with optional<br>Modular Power Positioning<br>System added. No new issues of<br>safety or effectiveness.                                                                                                                                                                                                                                                                                                                  |
| Device Performance                                      |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |                                                                                                                                                                                                                                                                                                                                                                                                                                             |                                                                                                                                                                                                                                                                                                                                                                                                                                                |
| Driving Range                                           | 15.5 miles                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      | 14.3 miles                                                                                                                                                                                                                                                                                                                                                                                                                                  | Updated testing done with seat<br>changes. No new issues of safety<br>or effectiveness.                                                                                                                                                                                                                                                                                                                                                        |
| Characteristic                                          | Predicate Device<br>(iBOT® PMD K210920)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         | Proposed<br>(iBOT®PMD)                                                                                                                                                                                                                                                                                                                                                                                                                      | Assessment of difference<br>(if applicable)                                                                                                                                                                                                                                                                                                                                                                                                    |
| Device Performance                                      |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |                                                                                                                                                                                                                                                                                                                                                                                                                                             |                                                                                                                                                                                                                                                                                                                                                                                                                                                |
| Dynamic stability                                       | 10 degrees (standard)<br>12 degrees (4 wheel)<br>8 degrees (balance)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            | 10 degrees (standard)<br>12 degrees (4 wheel)<br>8 degrees (balance)                                                                                                                                                                                                                                                                                                                                                                        | No change                                                                                                                                                                                                                                                                                                                                                                                                                                      |
| Max Speed Settings by Mode                              | Standard: 6.7 mph<br>4-Wheel: 5.1 mph<br>Balance: 3.5 mph<br>Docking: 0.6 mph                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   | Standard: 6.8 mph<br>4-Wheel: 5.1 mph<br>Balance: 3.5 mph<br>Docking: 0.6 mph                                                                                                                                                                                                                                                                                                                                                               | No change in electronics that<br>impact speed. No new issues of<br>safety or effectiveness.                                                                                                                                                                                                                                                                                                                                                    |
| Maximum user weight<br>capacity                         | 300 lb. with Maxx Rehab Seat                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    | 300 lb. without Modular Maxx Rehab Seat<br>275 lb. with Modular Ultra Low Maxx Seat<br>with power positioning options.                                                                                                                                                                                                                                                                                                                      | Maximum weight capacity<br>reduced for devices with seating<br>systems that include any<br>combination of 55-degree tilt,<br>recline, or elevating leg rests.                                                                                                                                                                                                                                                                                  |
| Obstacle Climbing                                       | 5 in. (in 4-wheel mode)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         | 6 in. (in 4-wheel mode)                                                                                                                                                                                                                                                                                                                                                                                                                     | Increased obstacle height. No new<br>issues of safety or effectiveness.                                                                                                                                                                                                                                                                                                                                                                        |
| Turning Radius                                          | 24.5 in. - 33.8 in.<br>(dependent on mode)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      | 24.5 in. - 37 in.<br>(dependent on mode)                                                                                                                                                                                                                                                                                                                                                                                                    | Due to length of the seating<br>system.                                                                                                                                                                                                                                                                                                                                                                                                        |
| User Interface Features                                 |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |                                                                                                                                                                                                                                                                                                                                                                                                                                             |                                                                                                                                                                                                                                                                                                                                                                                                                                                |
| Seating                                                 | Maxx Rehab Seat                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 | Maxx Rehab Seat<br>Ultra Low Maxx Rehab Seat with power<br>positioning options.                                                                                                                                                                                                                                                                                                                                                             | Added seating options that allow<br>for full tilt, recline, and/or<br>elevating leg rests.                                                                                                                                                                                                                                                                                                                                                     |
|                                                         |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |                                                                                                                                                                                                                                                                                                                                                                                                                                             | Risks specific to the power<br>positioning options were<br>identified via FMEA. All risk<br>mitigations were successfully<br>verified / validated with no<br>impact to safety or effectiveness<br>of the device.                                                                                                                                                                                                                               |
| Power Seat Elevation                                    | Available in 4-Wheel, Balance and Stair<br>modes. Seat elevation height maximum of<br>17"                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       | Available in 4-Wheel, Balance, Stair and<br>Standard modes. Seat elevation height<br>maximum of 17"                                                                                                                                                                                                                                                                                                                                         | Added existing functionality in<br>the powerbase to Standard mode                                                                                                                                                                                                                                                                                                                                                                              |
|                                                         |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |…

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**Source:** [https://fda.innolitics.com/submissions/PM/subpart-d%E2%80%94physical-medicine-prosthetic-devices/IMK/K243442](https://fda.innolitics.com/submissions/PM/subpart-d%E2%80%94physical-medicine-prosthetic-devices/IMK/K243442)

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