The ODi Ultimate Compression Screw System™ was designed for use on indications comparable to those for approved and marketed devices. The primary indications are for the stabilization of osteotomies in small bones, and the fixation of unstable or interfragmentary fractures. This device is not intended for use in the spine. The ODi Ultimate Compression Screw™ is indicated for:

Small Hand Bone Fractures
Carpal and Metacarpal Fractures
Tarsal and Metatarsal Fractures
Distal Metatarsal Osteotomies (Austin Chevron, Scarf)
Interfragmentary Radius and Ulna Fractures
Osteochondral Fractures
Intra-articular fractures
Arthrodesis of small joints
Reconstructive osteotomies in small carpal or tarsal bones
Osteochondritis Dissecans
Oblique fractures of the fibula
Metatarsal osteotomies and other reconstructive surgeries in the foot

Device Description

The ODi Ultimate Compression Screw™ will be offered in Ti-6Al-4V ELI. It will be available in common styles and assorted lengths for bone fracture fixation and stabilization. The Ultimate Compression Screw System™ consists of three screw components designed to be used as an assembly. The device has been designed to offer a wide range of compression, and screw sizes to address varving fracture and bone fragment geometries. The assembly consists of the following:

Proximal Screw Component .
Distal Screw Component .
Internal Compression Screw t
The screw components are equivalent in design to currently marketed standard compression bone screws. The thread form and defining screw features conform to ISO 5835, Metal Bone Screws with Hexagonal Drive Connection, Spherical Under-Surface of Head, Asymmetrical Thread Dimensions.
Initially, ten screw lengths will be available in 3.5 mm, 4.5 mm and 6.5 mm diameters, offering a range of fracture compression from 14.0 mm to 58.0 mm. The components are self-tapping and are designed to be manually inserted using commonly available (e.g. American Orthopedic) surgical instruments.
All device components are manufactured from titanium alloy, Ti-6Al-4V, per ASTM F136 and provided in detail as follows:
Proximal Screw Component
The proximal screw component is provided in outer diameters of 3.5 mm, 4.5 mm and 6.5 mm. This allows for implantation into either cortical or cancellous bone. The surgeon selects the component diameter and length based upon the bone type and the size of the bone fragment requiring fixation.
Distal Screw Component
The distal screw component is provided in outer diameters of 3.5 mm, 4.5 mm, and 6.5 mm. This allows for implantation into either cortical or cancellous bone. The surgeon selects the component diameter and length based upon the bone type and the size of the bone fragment requiring fixation.
Internal Compression Screw
The 2.0 mm internal compression screw is designed to seat within the proximal component and thread into the distal component. As the internal compression screw is threaded into the distal screw component, it draws the proximal and distal screw components together, thereby achieving fracture fixation.
Note that the internal compression screw is designed to universally fit all proximal and distal screw sizes. This gives the system a modularity that allows the surgeon to select the proximal and distal screw combination that best addresses the fracture geometry.

AI/ML Overview

The provided document is a 510(k) Premarket Notification for a medical device, the ODi Ultimate Compression Screw System™. This type of submission is for demonstrating substantial equivalence to a legally marketed predicate device, rather than proving safety and effectiveness through clinical trials with defined acceptance criteria. Therefore, the document does not describe detailed acceptance criteria or a study that proves the device meets specific performance criteria in the way that might be expected for novel or high-risk devices.

Instead, the document focuses on demonstrating that the device is substantially equivalent to existing, approved devices by meeting established material standards and having comparable indications for use.

Here's an analysis based on the information provided and the nature of a 510(k) submission:

1. A table of acceptance criteria and the reported device performance:

The document explicitly states: "No performance standards applicable to the fixation bone screw have been established by FDA." Instead, the primary "acceptance criteria" discussed are compliance with established material standards and substantial equivalence to predicate devices.

Acceptance Criteria (Implicit)	Reported Device Performance (Compliance)
Material composition meets ASTM F136-84 standard (Titanium alloy, Ti-6Al-4V ELI)	The ODi Ultimate Compression Screw System™ meets the chemical and mechanical requirements of ASTM F136-84.
Design equivalent to currently marketed standard compression bone screws	The screw components are equivalent in design to currently marketed standard compression bone screws.
Thread form conforms to ISO 5835 (Metal Bone Screws with Hexagonal Drive Connection, Spherical Under-Surface of Head, Asymmetrical Thread Dimensions)	The thread form and defining screw features conform to ISO 5835.
Indications for Use comparable to approved and marketed predicate devices	Indications for use (e.g., small hand bone fractures, carpal/metacarpal fractures, tarsal/metatarsal fractures, various osteotomies) are comparable to listed predicate devices (Acutrak Fixation System, Herbert/Whipple Bone Screw, Universal Compression Screw).
Manufacturing process in compliance with Good Manufacturing Practice (GMP) / Quality System Regulation (QS)	A substantially equivalent determination assumes compliance with current GMP requirements (21 CFR Part 820). The FDA will verify these assumptions through periodic QS inspections.
Labeling requirements met (e.g., specific use, warning against pedicular screw fixation)	Labeling developed to industry standards, and specific warnings regarding pedicular screw fixation are mandated by FDA in the approval letter.

2. Sample size used for the test set and the data provenance:

Not applicable / Not explicitly stated. This document does not describe a clinical trial or a specific "test set" of patient data for performance evaluation in the typical sense for proving efficacy. The assessment relies on engineering adherence to material standards and design equivalence.

3. Number of experts used to establish the ground truth for the test set and the qualifications of those experts:

Not applicable. There is no "ground truth" establishment in the context of clinical expert review mentioned, as this is a device based on material and mechanical equivalence, not diagnostic accuracy or clinical outcomes based on a "test set." The FDA's review process inherently involves experts (engineers, scientists from the Orthopaedic Device Section), but their role is in evaluating the 510(k) submission against regulatory requirements and predicate devices, not creating ground truth from patient data.

4. Adjudication method for the test set:

Not applicable. This document does not describe a test set that would require an adjudication method.

5. If a multi reader multi case (MRMC) comparative effectiveness study was done, If so, what was the effect size of how much human readers improve with AI vs without AI assistance:

Not applicable. This device is a bone screw, not an AI-assisted diagnostic or therapeutic device that would involve human readers or AI assistance.

6. If a standalone (i.e. algorithm only without human-in-the-loop performance) was done:

Not applicable. This is a mechanical orthopedic implant, not an algorithm.

7. The type of ground truth used:

For the device's design and material, the "ground truth" is established through industry standards and specifications:
- ASTM F136-84 (for material chemical and mechanical requirements).
- ISO 5835 (for screw thread form and defining features).
For indications for use, the "ground truth" is based on the established and approved indications of predicate devices (Acutrak Fixation System, Herbert/Whipple Bone Screw, Universal Compression Screw). The device's indications are stated to be "comparable to those for approved and marketed devices."

8. The sample size for the training set:

Not applicable. This document doesn't describe a 'training set' in the context of machine learning or deep learning. The device's design and manufacturing rely on established engineering principles and material science.

9. How the ground truth for the training set was established:

Not applicable. As above, no training set for an algorithm is described.

Summary

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Ka72722

Premarket Notification

JAN 2 3 1998

510(k) Summary of Safety and Effectiveness Information

For Release Upon Request Only

Date of Preparation:	October 27, 1997
Regulatory Authority:	Safe Medical Devices Act of 1990, 21 CFR 807.92
Company Name / Contact:
Company:	ODi (Orthopedic Designs, Inc.)5501-D Airport BoulevardTampa, FL 33634-5303
Contact:	Randy Lawson, Vice President, COO(813) 889-9194
Establishment Registration Number:	The registration number forOrthopedic Designs, Inc. ispending
Classification Name:	Fixation Bone Screw
Classification Reference:	21 CFR § 888.3040
Common Used Name:	Orthopaedic Compression Bone Screw
Device Product Code:	HWC
Classification Panel:	87 - Orthopaedic and Rehabilitation Devices
Trade Proprietary Name:	Ultimate Compression Screw System™

Proposed Regulatory Class:

The FDA has classified similar products as Class II devices by the Orthopedic Device Section of the Surgical and Rehabilitation Devices Panel at Section 888-304. The product code generally referred to is HWC (Product Code: HWC), and ODi submits this application under that designation.

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Performance Standards:

No performance standards applicable to the fixation bone screw have been established by FDA. However, the titanium alloy, Ti-6Al-4V ELI alloy used to manufacture the ODi Ultimate Compression Screw System™ meets the chemical and mechanical requirements of the standard established by the American Society for Testing and Materials (ASTM F136-84).

Package and Labeling:

Package labeling has been developed to industry standards. Packaging shall be validated for integrity, effectiveness and sterility. Packaged product shall be stored in a manner that effectively prevents damage to the labeling, packaging, and product.

Device Description:

发

Proximal Screw Component .
Distal Screw Component .
Internal Compression Screw t

The screw components are equivalent in design to currently marketed standard compression bone screws. The thread form and defining screw features conform to ISO 5835, Metal Bone Screws with Hexagonal Drive Connection, Spherical Under-Surface of Head, Asymmetrical Thread Dimensions.

Initially, ten screw lengths will be available in 3.5 mm, 4.5 mm and 6.5 mm diameters, offering a range of fracture compression from 14.0 mm to 58.0 mm. The components are self-tapping and are designed to be manually inserted using commonly available (e.g. American Orthopedic) surgical instruments.

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All device components are manufactured from titanium alloy, Ti-6Al-4V, per ASTM F136 and provided in detail as follows:

Proximal Screw Component

The proximal screw component is provided in outer diameters of 3.5 mm, 4.5 mm and 6.5 mm. This allows for implantation into either cortical or cancellous bone. The surgeon selects the component diameter and length based upon the bone type and the size of the bone fragment requiring fixation.

Distal Screw Component

The distal screw component is provided in outer diameters of 3.5 mm, 4.5 mm, and 6.5 mm. This allows for implantation into either cortical or cancellous bone. The surgeon selects the component diameter and length based upon the bone type and the size of the bone fragment requiring fixation.

Internal Compression Screw

The 2.0 mm internal compression screw is designed to seat within the proximal component and thread into the distal component. As the internal compression screw is threaded into the distal screw component, it draws the proximal and distal screw components together, thereby achieving fracture fixation.

Note that the internal compression screw is designed to universally fit all proximal and distal screw sizes. This gives the system a modularity that allows the surgeon to select the proximal and distal screw combination that best addresses the fracture geometry.

Indications for Use:

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1. Small Hand Bone Fractures
1. Carpal and Metacarpal Fractures

Tarsal and Metatarsal Fractures

1. Distal Metatarsal Osteotomies (Austin Chevron, Scarf)
1. Interfragmentary Radius and Ulna Fractures
1. Osteochondral Fractures
1. Intra-articular fractures
1. Arthrodesis of small joints
1. Reconstructive osteotomies in small carpal or tarsal bones
1. Osteochondritis Dissecans
1. Oblique fractures of the fibula
1. Metatarsal osteotomies and other reconstructive surgeries in the foot

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Contraindications for Use:

The ODi Ultimate Compression Screw™ is not intended for use in patients with the following conditions:

1. Active local Infection.
1. Metal sensitivity or allergic reaction to foreign bodies.
Other conditions that may place the patient at risk. 3.
1. When quality of bone stock prevents secure seating of the screws.

Substantial Equivalent Devices:

The ODi Ultimate Compression Screw System™ is substantially equivalent to the products listed below. Each of these Class II products is approved and commercially available with indications for use comparable to the ODi Ultimate Compression Screw™.

Acutrak Fixation System 1) Acutek, Inc. K944330
1. Herbert/Whipple Bone Screw Zimmer, Inc. K792022
1. Universal Compression Screw Howmedica, Inc. K923477

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Image /page/4/Picture/1 description: The image shows the seal of the Department of Health & Human Services (HHS) of the United States. The seal features a stylized eagle with its wings spread, symbolizing protection and service. The words "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" are arranged in a circular pattern around the eagle.

Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850

JAN 23 1998

Mr. Randy Lawson Vice President, COO Orthopedic Designs, Inc. 5501-D Airport Boulevard Tampa, Florida 33634-5303

Re : K972722 Ultimate Compression Screw System Regulatory Class: II Product Code: HWC Dated: October 28, 1997 Received: October 31, 1997

Dear Mr. Lawson:

We have reviewed your Section 510(k) notification of intent to market the device referenced above and we have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to 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 (Act). You may, therefore, market the device, subject to the general controls provisions of the Act.

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. Note that labeling or otherwise promoting a device for pedicular screw fixation/attachment would cause the device to be adulterated under 501(f) (1) of This device, if intended for use in pedicular screw the Act. fixation/attachment, would be found not substantially equivalent and would be a class III device under Section 513 (f) of the Act. Class III devices are required to have an approved premarket approval (PMA) application prior to marketing. Accordingly:

The package insert must prominently state that the device 1. . is intended for the specific use(s) described in the enclosure only; and

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Page 2 - Mr. Randy Lawson

You may not label or in any way promote this device for 2. pedicular screw attachment to, or fixation of the cervical, thoracic or lumbar vertebral column. If this device is a screw with outer diameters of 3 mm - 10 mm and overall lengths of 10 mm - 75 mm inclusively, the package insert must include the following statement, This device is not approved for screw "WARNING: attachment or fixation to the posterior elements (pedicles) of the cervical, thoracic, or lumbar spine." Any pedicular screw fixation/attachment to the cervical, thoracic or lumbar vertebral column of this device is considered investigational and may only be investigated as a significant risk device in accordance with the investigational device exemption (IDE) regulations under 21 CFR, Part 812. All users of the device for pedicular screw fixation/attachment must receive approval from their respective institutional review boards (IRBs) and the Food and Drug Administration (FDA) prior to conduct of the investigation.
If your device is classified (see above) into either class II (Special Controls) or class III (Premarket Approval), it may be subject to such additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 895. A substantially equivalent determination assumes compliance with the current Good Manufacturing Practice requirement, as set forth in the Quality System Regulation (QS) for Medical Devices: General regulation (21 CFR Part 820) and that, through periodic (QS) inspections, the Food and Drug Administration (FDA) will verify such assumptions. Failure to comply with the GMP requlation may result in regulatory In addition, FDA may publish further announcements action. concerning your device in the Federal Register. Please note: this response to your premarket notification submission does not affect any obligation you might have under sections 531 through 542 of the Act for devices under the Electronic Product Radiation Control provisions, or other Federal Laws or Requlations.

This letter will allow you to begin marketing your device as described in your 510(k) premarket notification immediately. An FDA finding of substantial equivalence of your device to a legally marketed predicate device results in a classification for your device and permits your device to proceed to the market.

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Page 3 - Mr. Randy Lawson

If you desire specific advice for your device on our labeling requlation (21 CFR Part 801 and additionally 809.10 for in vitro diagnostic devices), please contact the Office of Compliance at (301) 594-4659 . Additionally for questions on the promotion and advertising of your device, please contact the Office of Compliance at (301) 594-4639. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR 807.97). Other general information on your responsibilities under the Act may be obtained from the Division of Small Manufacturers Assistance at its toll-free number (800) 638-2041 or (301) 443-6597 or at its Internet address "http://www.fda.gov/cdrh/dsmamain.html".

Sincerely yours,

Celia M. Witten, Ph.D., M.D. Director Division of General and Restorative Devices Office of Device Evaluation Center for Devices and Radiological Health

Enclosure

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DEVICE INDICATIONS FOR USE

Page 1 of 1

510(k) Number:

K972722

Device Name:

ODi Ultimate Compression Screw System™

Indications For Use:

1. Small Hand Bone Fractures
1. Carpal and Metacarpal Fractures
1. Tarsal and Metatarsal Fractures
1. Distal Metatarsal Osteotomies (Austin Chevron, Scarf)
1. Interfragmentary Radius and Ulna Fractures
1. Osteochondral Fractures
1. Intra-articular fractures
1. Arthrodesis of small joints
1. Reconstructive osteotomies in small carpal or tarsal bones
1. Osteochondritis Dissecans
1. Oblique fractures of the fibula
1. Metatarsal osteotomies and other reconstructive surgeries in the foot

(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IF NEEDED)

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------Concurrence of CDRH, Office of Device Evaluation (ODE)

f Device Evaluation (ODE)

(Division Sign-Off)

(Division Sign-On)
Division of General Restorative Devices
510(k) Number K972722

Prescription Use (per 21 CFR 801.109)

Over-The-Counter Use

(Optional Format 1-2-96)

Regulation Number and Section

§ 888.3040 Smooth or threaded metallic bone fixation fastener.

(a)
Identification. A smooth or threaded metallic bone fixation fastener is a device intended to be implanted that consists of a stiff wire segment or rod made of alloys, such as cobalt-chromium-molybdenum and stainless steel, and that may be smooth on the outside, fully or partially threaded, straight or U-shaped; and may be either blunt pointed, sharp pointed, or have a formed, slotted head on the end. It may be used for fixation of bone fractures, for bone reconstructions, as a guide pin for insertion of other implants, or it may be implanted through the skin so that a pulling force (traction) may be applied to the skeletal system.(b)
Classification. Class II.