(224 days)
KegelFit is a non-implanted muscle stimulator designed to treat female stress urinary incontinence. It applies stimulation to the pelvic floor muscles to improve strength and support. The KegelFit is intended for OTC sale.
The KegelFit is a hand-held, home-use device designed to treat female stress urinary incontinence. The device is supplied with a vaginal two electrode stimulation probe (Trainer). The trainer connects to the control unit by cable and plug and is inserted into the vagina by the end user. Electrical stimulation is delivered via stainless steel electrodes on the trainer to induce a contraction of the pelvic floor muscles. Muscle stimulation is used to train and strengthen the pelvic floor muscles in a controlled manner. Muscle stimulation is used to improve the ability of muscles to hold a contraction for an extended period of time and is a treatment for urinary incontinence. During a session, stimulation is delivered to specific muscles to encourage their contraction. This contraction strengthens the muscles and also helps the end user recognize which muscles to activate during self-directed contractions. The level of electrical stimulation is easily controlled by the end user using manual, push-button controls. The device is battery powered single channel home use neuromuscular stimulation. Electrical stimulation is delivered via stainless steel electrodes on the inflatable probe to induce a contraction of the pelvic floor muscles. Muscle stimulation is used to train and strengthen the pelvic floor muscles in a controlled manner. Muscle stimulation is used to improve the ability of muscles to hold a contraction for an extended period of time and is a treatment for urinary incontinence. During a session, stimulation is delivered to specific muscles to encourage their contraction. This contraction strengthens the muscles and also helps the end user recognize which muscles to activate during self-directed contractions. The level of electrical stimulation is easily controlled by the end user using manual, push-button controls. The unit is intended for home use by the patient, and is designed with simplicity and ease of use in mind. It has two preset treatment programs, a preset treatment timer, a compliance monitor, and open circuit detectors.
The provided text does not contain specific acceptance criteria with numerical thresholds, nor does it detail a clinical study with a control group and effect sizes to prove that the Tenscare KegelFit device meets such criteria. Instead, the submission focuses on establishing substantial equivalence to previously cleared predicate devices through comparisons of technological characteristics, intended use, and safety documentation.
Here's an breakdown of the information that can be extracted from the document, organized according to your request:
1. Table of Acceptance Criteria and Reported Device Performance
As mentioned, explicit acceptance criteria with specific numerical targets (e.g., "sensitivity > 90%") for the device's clinical performance are not provided in this document. The document focuses on demonstrating substantial equivalence to predicate devices, rather than meeting novel performance criteria through new clinical endpoints.
Instead of formal "acceptance criteria," the document outlines areas of comparison to establish substantial equivalence. The "reported device performance" is framed in terms of its similarity to predicates and successful safety testing.
| Feature/Function (Analogous to Acceptance Criteria) | Tenscare KegelFit Performance (Reported Device Performance) | Comparison to Predicate A (itouch Sure) | Comparison to Predicate C (Apex) |
|---|---|---|---|
| Intended Use | Non-implanted muscle stimulator for female stress urinary incontinence, applies stimulation to pelvic floor muscles to improve strength and support. | Substantially equivalent (after removing Urge and Mixed incontinence programs, and modifying label for OTC). | Identical |
| Indications for Use | Treats female stress urinary incontinence by applying stimulation to pelvic floor muscles. | Substantially equivalent (removed non-stress incontinence indications). | Identical |
| Primary Function | Delivery of electrical stimulation. | Identical | Identical |
| Safety - Software | "Moderate" level of concern. Passed V&V. | Identical | Identical |
| Safety - Electrical | Complies with IEC 60601-1 and IEC60601-1-11. EMC tested to EN60601-1-2:2007. | Identical (to itouch Sure, concerning 21 CFR 898 for cable/lead). | Substantially equivalent (Apex has no leads for comparison). |
| Safety - Biocompatibility | Vaginal electrode material (ABS, stainless steel) tested per ISO 10993-5:2009 and ISO 10993-10:2002. | Identical (same electrode as itouch Sure). | Substantially equivalent (different materials, but both cleared). |
| Labeling Clarity for OTC Use | Designed for self-diagnosis of SUI and identification of contraindications, and effective use based on instructions. | Substantially equivalent (operating instructions based on itouch Sure, revised for usability). | Substantially equivalent (based on Apex for self-diagnosis, contraindications, warnings). |
| Usability/Ease of Use (for OTC) | Instructions easy to follow/device easy to use without training. | Supported by customer reviews of itouch Sure. | Supported by customer reviews of itouch Sure. |
| Output Modes | Two (TRAIN / 50Hz Stress, 35Hz Tone). | Substantially Equivalent (Reduced from four in itouch Sure, matching altered Intended Use). | Substantially equivalent (increased from one in Apex). |
| Max Output Voltage (500Ω) | 45V | Identical | Substantially equivalent (Apex 34.2V, both deemed safe/effective). |
| Max Output Current (500Ω) | 90mA | Identical | Substantially equivalent (Apex 68.2mA, both deemed safe/effective). |
| Max Phase Charge (500Ω) | 18.6 μC | Identical | Substantially equivalent (Apex 13.6 μC; Apex is monophasic). |
| Max Current Density | 10.46 mA/cm2 | Identical | Substantially equivalent (Apex 11.6 mA/cm2; both deemed safe/effective). |
| Max Average Power Density (500Ω) | 5.84 mW/cm2 | Identical | Substantially equivalent (Apex 3.95 mW/cm2; no special requirement for home use). |
2. Sample Size Used for the Test Set and Data Provenance
The "testing" mentioned is not a human clinical trial test set in the traditional sense, but rather a combination of:
- Customer Reviews Analysis:
- Sample Size: 13,758 OTC sales of the predicate device "itouch Sure" through Amazon UK.
- Data Provenance: Retrospective, derived from customer reviews in the UK (EU market at the time).
- Customer Questionnaires:
- Sample Size: 21 responses received from 120 users of "itouch Sure" who purchased OTC through eBay UK.
- Data Provenance: Prospective (questionnaires sent out), with data from UK (EU market).
- Labeling Comparison: Not a "test set" in terms of subject count, but a comparison of documents.
- Clinical Literature Evaluation: Not a specific test set, but a review of existing literature.
3. Number of Experts Used to Establish the Ground Truth for the Test Set and the Qualifications of Those Experts
- Customer Reviews/Questionnaires: No medical experts established "ground truth" for the usability and self-diagnosis aspects derived from customer feedback. The "truth" in this context is the aggregated perception and experience of lay users.
- Labeling Comparison: The comparison was performed by the submission authors (Tenscare Ltd.). The qualifications of these individuals are not specified in the provided text.
- Clinical Literature Review: This implies an expert review, but the number and specific qualifications of the individuals who conducted this review are not stated.
4. Adjudication Method for the Test Set
- Customer Reviews/Questionnaires: There is no mention of a formal adjudication method by experts. The analysis involved reviewing customer feedback.
- Labeling Comparison: This was a direct comparison done by the submitter, not requiring an adjudication panel.
- Clinical Literature Review: No specific adjudication method is described.
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
No, a Multi-Reader Multi-Case (MRMC) comparative effectiveness study was not done. The device is an electrical muscle stimulator, not an AI-powered diagnostic tool requiring human reader interpretation of images or other data. This type of study is not relevant to this device.
6. If a Standalone (i.e. algorithm only without human-in-the-loop performance) was done
The Tenscare KegelFit is a physical medical device (muscle stimulator) intended for home use by patients, not an algorithm. Therefore, a "standalone algorithm performance" study is not applicable. The device's performance is inherently linked to its use by a human operator. Its "standalone" performance might refer to its functional specifications (e.g., electrical parameters) which were tested in electrical safety and EMC tests, but not in a "standalone algorithm" context.
7. The Type of Ground Truth Used
- For safety and effectiveness: The "ground truth" relies on:
- Substantial equivalence to predicate devices: The established safety and effectiveness of the existing itouch Sure and Apex devices (which presumably had their own ground truth established in prior clearances).
- Clinical literature evaluation: Existing medical literature on the efficacy of electrical stimulation for stress urinary incontinence.
- For usability and self-selection for OTC use: The "ground truth" was established by:
- Customer feedback/reviews: Direct user experience and statements regarding ease of use and understanding of instructions and contraindications. This serves as a proxy for "ground truth" in the context of user comprehension for an OTC product.
8. The Sample Size for the Training Set
Not Applicable. The Tenscare KegelFit is not an AI/ML algorithm that requires a "training set" of data. It is a hardware medical device with pre-programmed settings.
9. How the Ground Truth for the Training Set was Established
Not Applicable. As there is no AI/ML algorithm or training set, this question does not apply.
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Image /page/0/Picture/1 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo consists of a circular border with the text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" around the edge. Inside the circle is a stylized image of three human profiles facing to the right, with flowing lines connecting them.
Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
April 20, 2015
Tenscare Ltd. % Linda Stamschor US Agent Akos (Meddiquest) 17957 615th Street Kellogg, MN 55945
Re: K142506 Trade/Device Name: Tenscare KegelFit Regulation Number: 21 CFR 876.5320 Regulation Name: Nonimplanted electrical continence device Regulatory Class: II Product Code: KPI Dated: November 6, 2014 Received: March 11, 2015
Dear Linda Stamschor,
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 (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. 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.
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 (reporting of medical device
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related adverse events) (21 CFR 803); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820); and if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please contact the Division of Industry and Consumer Education at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address
http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR Part 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to
http://www.fda.gov/MedicalDevices/Safety/ReportaProblem/default.htm for the CDRH's Office of Surveillance and Biometrics/Division of Postmarket Surveillance.
You may obtain other general information on your responsibilities under the Act from the Division of Industry and Consumer Education at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address
http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm.
Sincerely yours,
Herbert P. Lerner -S
for Benjamin R. Fisher, Ph.D. Director Division of Reproductive, Gastro-Renal, and Urological Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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Indications for Use
510(k) Number (if known) K142506
Device Name Tenscare KegelFit
Indications for Use (Describe)
KegelFit is a non-implanted muscle stimulator designed to treat female stress urinary incontinence.
It applies stimulation to the pelvic floor muscles to improve strength and support.
The KegelFit is intended for OTC sale.
Type of Use (Select one or both, as applicable)Prescription Use (Part 21 CFR 801 Subpart D)
|X | Over-The-Counter Use (21 CFR 801 Subpart C)
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Section5 510(k) Summary
Date of Summary prepared: 7th April 2015
| Submitter | : | Tenscare Ltd |
|---|---|---|
| Address: | : | 9 Blenheim Road, Longmead Business Park, Epsom, Surrey, |
| KT19 9BE, United Kingdom | ||
| Tel | : | +44(0)1372 723 434 |
| Fax | : | +44(0)1372 745 434 |
| : | andrew.brown@tenscare.co.uk | |
| FDA Establishment registration no: 3003446042 | ||
| Contact person: | : | Andrew Brown |
Address of the manufacturing facility:
EasyMed Instruments Co Ltd 5F/6F, Block A, Gupo Gongmao Building, Fengxin Road, Fengxiang Industrial District, Daliang, 528300 Shunde, Foshan, Guangdong, China,
FDA Establishment registration no: 3004049909
Address of American Representative:
Linda Stamschror 17957 615th Street Kellogg Minnesota 55945 USA
Phone: 507 767 2258 Email: wallisfowler@gmail.com
ll Submitted Device:
| Generic name: | Pelvic Floor Stimulator |
|---|---|
| Trade name: | TensCare KegelFit |
| Common name: | KegelFit Pelvic Floor Exerciser |
| Classification name: | Stimulator, Electrical, Non-implantable, for Incontinence –Title 21, Code of Federal Regulations Sec.876.5320 ProCode: 78 KPI |
| Device Classification: | Class II |
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��� Predicate Devices:
| 510(k) | Name | Product Code | Class | Use | Manufacturer |
|---|---|---|---|---|---|
| Primary Predicate | |||||
| K141158 | Apex | KPI | II | OTC | InControl Medical, LLC3225 Gateway Road, Ste. 250Brookfield, WI 53045 USA |
| Secondary Predicate | |||||
| K103698 | itouch SurePelvicFloorExerciser | KPI | II | Prescription | Tenscare Ltd9 Blenheim Road, Epsom,Surrey,KT19 9BE, UK |
Device Description: IV
The KegelFit is a hand-held, home-use device designed to treat female stress urinary incontinence. The device is supplied with a vaginal two electrode stimulation probe (Trainer). The trainer connects to the control unit by cable and plug and is inserted into the vagina by the end user. Electrical stimulation is delivered via stainless steel electrodes on the trainer to induce a contraction of the pelvic floor muscles. Muscle stimulation is used to train and strengthen the pelvic floor muscles in a controlled manner. Muscle stimulation is used to improve the ability of muscles to hold a contraction for an extended period of time and is a treatment for urinary incontinence. During a session, stimulation is delivered to specific muscles to encourage their contraction. This contraction strengthens the muscles and also helps the end user recognize which muscles to activate during self-directed contractions. The level of electrical stimulation is easily controlled by the end user using manual, push-button controls.
The device is battery powered single channel home use neuromuscular stimulation. Electrical stimulation is delivered via stainless steel electrodes on the inflatable probe to induce a contraction of the pelvic floor muscles. Muscle stimulation is used to train and strengthen the pelvic floor muscles in a controlled manner. Muscle stimulation is used to improve the ability of muscles to hold a contraction for an extended period of time and is a treatment for urinary incontinence. During a session, stimulation is delivered to specific muscles to encourage their contraction. This contraction strengthens the muscles and also helps the end user recognize which muscles to activate during self-directed contractions. The level of electrical stimulation is easily controlled by the end user using manual, push-button controls.
The unit is intended for home use by the patient, and is designed with simplicity and ease of use in mind. It has two preset treatment programs, a preset treatment timer, a compliance monitor, and open circuit detectors.
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V The intended use of the device:
KegelFit is a non-implanted muscle stimulator designed to treat female stress urinary incontinence. It applies stimulation to the pelvic floor muscles to improve strength and support.
The intended use and indications for use of the new device are the same as those of the predicate device Apex K141158
KegelFit for over-the-counter use was evaluated for safety in two ways:-
-Ability to self-diagnose and identify whether contraindication apply was established by detailed comparison with labeling and instructional packaging of the predicate device Apex K141158
-Ability to use effectively was established by analysis of customer reviews over 4 years and 13758 OTC sales of the predicate device itouch Sure K103698 through Amazon UK. The user manual was revised three times over this period in response to customer feedback and to comply with EN60601-1-11.
The device labeling and packaging (which includes a box, detailed instructions for use, and laminated quick reference guide) allow the end user to accurately self-diagnose and use the product to treat stress urinary incontinence.
VI Equivalence Comparison to the Predicate Devices
Electrical muscle stimulation is the technological principle for both KeqelFit and the predicate devices, Apex (K141158) and itouch Sure (K103698). It is based on the use of the electrical muscle stimulator to strengthen the pelvic floor muscles.
Table 6 below summarizes the shared and unique technological elements between the KegelFit, itouch Sure, and Apex devices. The technology, engineering, performance and user interface for KegelFit is substantially equivalent to the predicate devices.
Intended Use has been changed from prescription to OTC and from all types of incontinence only, and the available settings and labeling have been modified to allow for this change. The intended use, labeling and user interface for KegelFit is substantially equivalent to the predicate device Apex.
The KegelFit is a relabelled version of the itouch Sure(K103698). The components, electronics, and accessories are identical. The display and software have been modified in line with the change in Intended Use. The physical differences between the two versions of the product are:
| KegelFit | Itouch Sure | Explanation | |
|---|---|---|---|
| Program name | TRAIN | STRES | To be less technical, and stress the need for Kegel exercises. |
| Program name | X | URGE | Removed as Urge and Mixed are not included in the Intended Use |
| Program name | X | MIXED | Removed as Urge and Mixed are not included in the Intended Use |
| TreatmentTimer | Default 20 min ,10 min selectable | Default 20 min, up to 60 min selectable | Only adverse report received was of over-use leading to muscle cramping. IFU amended.Longer treatment times removed. |
| Keypad | On/Off Colour coded | ON/OFF buttons colour coded to clarify operation |
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The KegelFit is substantially equivalent to the itouch Sure, which has been approved for home and hospital use on prescription.
Safety and effectiveness for home use with professional instruction is therefore established.
The KegelFit packaging and instructions for use are substantially equivalent to that of the Apex for the relevant criteria:-
- . How well the lay user can self-select themselves as being appropriate users
- Whether the lay user can understand all indications, contraindications, warnings and . precautions, and be able to identify whether they are within any contraindicated group.
This Substantial Equivalence is established by detailed comparison of labeling in Section 12. The KegelFit uses identical or substantially equivalent wording, frequency of use, and positioning of Intended Audience, Contraindications, Warnings and Cautions.
The final comparison is that of the ability of the lay user to be able to apply the treatment safely and correctly according to the instructions for use without training.
TensCare presents analysis of Customer Reviews from OTC sales of 13,768 units of itouch Sure through Amazon UK and 21 customer questionnaires sent to 120 users of itouch Sure as evidence that the lay user finds the device easy to use and the instructions easy to follow.
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Table 6. Substantial Equivalence Comparison Table
| Features/Function | A KegelFit K142506 | B Itouch Sure | C Apex K141158 | Comparison A/B | Impact on safety and performance | Comparison A/C | Impact on safety and performance |
|---|---|---|---|---|---|---|---|
| Intended UseAn explicitdescription of allclinical functionsperformed bythe device, | The Itouch Sure is a non-implantedelectrical stimulator indicated foruse in the treatment of femaleurinary incontinence. It applieselectricalstimulation to the pelvic floormusculature and surroundingstructures | ||||||
| Indications forUseExplain when thedevice is to beclinically usedand the intendedpatientpopulation | KegelFit is a non-implantedmuscle stimulator designed totreat female stress urinaryincontinence. It appliesstimulation to the pelvic floormuscles to improve strengthand support. | The Itouch Sure is indicated foracute and ongoing treatment ofstress, urge or mixed urinaryincontinence and where thefollowing results may improveurinary control:• Improvement of urethralsphincter closure• Strengthening of pelvic floormuscles• Inhibition of the detruser(bladder) muscle through reflexivemechanisms | Apex is a non-implanted musclestimulator designed to treatfemale stress urinaryincontinence.It applies stimulation to the pelvicfloor muscles to improve strengthand support. | Substantiallyequivalent | None:Both devices applyelectrical stimulation tostrengthen the pelvicfloor muscles, assupported by literature,see Section20.1 ClinicalEvaluation Report | Identical | None: |
| Features/Function | A Kegelfit | B Itouch Sure | C Apex K141158 | ComparisonA/B | Impact on safety andperformance | ComparisonA/C | Impact on safety andperformance |
| PrimaryFunction | Delivery of electricalstimulation | Delivery of electrical stimulation | Delivery of electrical stimulation | Identical | None | Identical | None |
| Warnings orPrecautions | (See product labeling) | (See product labeling) | SubstantiallyEquivalent | The Warnings andCautions were based onthe predicate Apexwhich was validatedthrough human factorsand Usability Testing.Only minor changeswere made to allow forthe technical differencebetween the products | |||
| Contra-indicationsExplain when thedevice is notto be clinicallyused | • Do not use if you arepregnant.• Do not use if you areattempting to get pregnant• Do not use if you have acardiac demand pacemakeror implanted defibrillator.• Do not use if you havesymptoms of active urinary | ContraindicationsShould not be used if you have anyof the following conditions:• If you are pregnant or trying tobecome pregnant• If you have a heart pacemaker ora heart rhythm problem• If you have:An active urinary tract infectionInfections or lesions in the area ofelectrode placement | • Do not use if you are pregnant• Do not use if you areattempting to get pregnant• Do not use if you have a cardiacdemand pacemaker or implanteddefibrillator• Do not use if you havesymptoms of active urinary tractinfection, vaginal infections, orlocalized lesions | Substantiallyequivalent | None | Identical | None |
| infections, or localized lesions• Do not use if you have adiagnosis of extra-urethral oroverflow incontinence• Do not use if you havesevere urine retention• Do not use if you have poorsensation in the pelvic region• Do not use if you havecognitive disabilities, i.e.;Alzheimer's disease ordementia• Do not use if you are unableto properly insert the Trainer• Do not use if you haveactive pelvic cancer• Do not use it you have anintestinal clamp• You must be 6 weeks postpelvic surgery or vaginalchildbirth to use this device• Do not use this device fordiagnostic purposes or criticalpatient monitoring• This device is not (external)defibrillator-proof | History of urinary retention orpost-void residual volume greaterthan 200cc• Diminished sensory perception• Inability to understand thedirections for use or operate thedevice correctly• If you have been diagnosed ortreated for cervical, or any pelvic,cancer• Recent history of vaginal bleedingbetween menstrual periods• If you have, or have had epilepsy | • Do not use if you have adiagnosis of extra-urethral oroverflow incontinence• Do not use if you have severeurine retention• Do not use if you have poorsensation in the pelvic region• Do not use if you have cognitivedisabilities, i.e.; Alzheimer'sdisease or dementia• Do not use if you are unable toproperly insert the device perinstructions• Do not use if you have activepelvic cancer• Do not use if you have anintestinal clamp• You must be 6 weeks post-pelvic surgery or vaginalchildbirth to use this device• Do not use this device fordiagnostic purposes or criticalpatient monitoring• This device is not (external)defibrillator-proof | |||||
| • If any discomfort occurs when | |||||||
| inserting the probe, consult yourtreating physician. | |||||||
| Features/Function | A Kegelfit | B Itouch Sure | C Apex K141158 | ComparisonA/B | Impact on safety andperformance | ComparisonA/C | Impact on safety andperformance |
| LabelingSummaryClarity to insuresafer or more | User ManualRetail BoxContraindications insert | User ManualRetail BoxContraindications insert | Substantiallyequivalent | None:The operatinginstructions part of theuser manual is based onthe predicate, itouchSure,with references toUrge and Mixedprograms removed.Illustrations and QuickStart guide were addedto further improveusability | Substantiallyequivalent | None.See comparison table ofthe self-diagnosis,contraindications andwarnings. | |
| effective use | Device controls | Device controls | |||||
| Environ-mentalSpecific-ations | For indoor use only | For indoor use only | For indoor use only | Identical | None | Identical | None |
| Power Source | 2 AA Alkaline battery | 2 AA Alkaline battery | 4 AAA Alkaline battery | Identical | None | Substantially | None |
| equivalent | Battery insertion wasvalidated throughanalysis of customerreviews | ||||||
| Method of linecurrentisolation | N/A (battery) | N/A (battery) | N/A (battery) | Identical | None | Identical | None |
| Patientleakagecurrent | N/A (battery) | N/A (battery) | N/A (battery) | Identical | None | Identical | None |
| Number ofOutput Modes | Two | Four | One | SubstantiallyEquivalent. | NoneMatches alteration inIntended Use | Substantiallyequivalent | None. Customer reviewsindicate no difficulty inusing more than oneprogram |
| Number ofoutputchannels | 1 | 1 | 1 | Identical | None | Identical | None |
| Regulatedcurrent orvoltage? | Regulated current | Regulated current | Regulated voltage | Identical | None | Substantiallyequivalent | NoneBoth regulated currentand voltage have beenshown to be safe andeffective |
| Firmwarecontrolled? | Yes | Yes | Yes | Identical | None | Identical | None |
| AutomaticOverload Trip? | No | No | No | identical | None: | identical | None: |
| Automatic No-Load Trip? | Yes | Yes | No | identical | None: | Substantiallyequivalent | None:KegelFit offers additionaluser protection |
| AutomaticShut Off? | Yes | Yes | No | Identical | None | SubstantiallyEquivalent. | Apex user must switchoff at end of session |
| Patient OverrideControl? | Yes | Yes | No | Identical | None | SubstantiallyEquivalent. | None. Customer reviewsindicate no difficulty inusing this facility |
| IndicatorDisplay• On/Off Status• Low Battery | YesYes | YesYes | Yes (via display illumination)No | Identical | None | Substantiallyequivalent | None:Kegelfit offers additionalinformation.Message is easilyunderstood andcustomer reviewsindicate no difficulty inusing this facility |
| Display- Voltage/CurrentLevel? | Yes LCD | Yes LCD | Yes combination of two LEDs | Identical | None | Substantiallyequivalent | LCD readout is muchsimpler thancombination of staticand flashing LEDs |
| Waveform, | Bi-phasic | Bi-phasic | Monophasic, alternating polarity, | Identical | None | Substantiallyequivalent | None.Both waveforms are |
| shape | Rectangular at positive | Rectangular at positive | square pulse | Identical | None | Substantiallyequivalent | approved in predicatedevices |
| Frequency• Mixed• Stress• Urge | - Hz50 Hz-Hz | 20 Hz50 Hz10 Hz | 50 Hz | Substantiallyequivalent | None | Substantiallyequivalent | None.Both predicate deviceshave been approved assafe and effective. |
| • Tone | 35 Hz | 35Hz | |||||
| Pulse width | No special requirementdemonstrated for homeuse | ||||||
| • Mixed | 250μs | ||||||
| • Stress | 300μs | 300μs | 200 μs | ||||
| • Urge | 250μs | ||||||
| • Tone | 250μs | 250μs | |||||
| Time On +ramp | Substantiallyequivalent | Programs removed inline with change inintended use | Substantiallyequivalent | None.All settings have beenapproved for use onpredicate devices | |||
| • Mixed | 7 seconds on | ||||||
| • Stress | 7 seconds on | 7 seconds on | 1 second on | ||||
| • Urge | 7 seconds on | ||||||
| • Tone | 5 seconds on | 5 seconds on | |||||
| Time Off | Substantiallyequivalent | Programs removed inline with change inintended use | Substantiallyequivalent | None.All settings have beenapproved for use onpredicate devices | |||
| • Mixed | 10 seconds off | 2 seconds off | |||||
| • Stress | 10 seconds off | 10 seconds off | |||||
| • Urge | 10 seconds off | ||||||
| • Tone | 6 seconds off | 6seconds off | |||||
| Total SessionTime | Default 20 minutesAdjustable to 10 minutes. | Default 20 minutesAdjustable to 10,20,30,45,60 and 90minutes | Total session time of 10-15minutes• 5-10 minutes electricalstimulation• 5 minutes self-directedcontraction (recommended) | Substantiallyequivalent | None.Longer session timesremoved in response tocustomer feedback | Substantiallyequivalent | None |
| Compliance*with 21 CFR 898Cable and leadrequirements. | Yes | Yes | N/A | Identical | None | SubstantiallyEquivalent. | NoneNo leads in Apex device |
| Max outputvoltage (500Ω) | 45V | 45V | 34.2 V | Identical | None | Substantiallyequivalent | None.Both predicate devices |
| Max outputcurrent (500Ω) | 90mA | 90mA | 68.2 mA | Identical | None | Substantiallyequivalent | have been approved assafe and effective. |
| Maximumphase charge(500Ω) | 18.6 μC | 18.6 μC | 13.6 μC | Identical | None | Substantiallyequivalent | Apex is monophasic, sonet charge=max charge |
| Electrodesurface area | 8.58 cm2 | 8.58 cm2 | 5.88 cm2 | Identical | None | Substantiallyequivalent | None.Both predicate devices |
| Max currentdensity | 10.46 mA/cm2 | 10.46 mA/cm2 | 11.6 mA/cm2 | Identical | None | Substantiallyequivalent | have been approved assafe and effective. |
| Max averagepower density(500Ω) | 5.84 mW/cm2 | 5.84 mW/cm2 | 3.95 mW/cm2 | Identical | None | Substantiallyequivalent | No special requirementfor home use |
| Dimensions(Insertion Unit) | TrainerWeight: 0.7 oz (20 gm)Length:2.87" (73 mm)(inserted part)Width:1.1" (28mm) dia(widest point) | TrainerWeight: 0.7 oz (20 gm)Length:2.87" (73 mm) (insertedpart)Width:1.1" (28mm) dia (widestpoint) | Overall Insertion Unit: 12.2"x2.5"x 4.0" | Identical | None | Substantiallyequivalent | None |
| Controlhousingmaterial | ABS plastics | ABS plastics | N/A | Identical | None | N/A | |
| Insertionmaterial | ABS plasticsStainless steel | ABS plasticsStainless steel | Silicone, plasticsStainless steel | Identical | None | Substantiallyequivalent | |
| Packaging orExpiration | N/A | N/A | 1 year for insertion unit | Identical | None | Substantiallyequivalent | None:Expiration dating is not |
| Dating | needed based on the | ||||||
| stability of thematerials chosen. | |||||||
| Sterilization | N/A | N/A | N/A | Identical | None | Identical | None |
| Features/Function | A Kegelfit | B Itouch Sure | C Apex K141158 | ComparisonA/B | Impact on safety andperformance | ComparisonA/C | Impact on safety andperformance |
| OperationalMethod:ClinicalUsee.g., ambulatoryuse, home use | Home use, Over-the-counter | Clinic or Home use, under directionof physician | Home use, Over-the-counter | Substantiallyequivalent | None:An over-the-counterindication does notimpact safety becausethe stimulation iscontrolled by the enduser per end userresponse.Safety features are builtinto the design of thedevice for the maximumoutput, overload andshort circuit, andautomatic shut-off. | Identical | None |
| PatientInteraction:FunctionsControllable:An explanation ofhow the deviceinteracts withthe patient. | The end user can control theelectrical stimulation levelsand the starting and stoppingof each session. However, thedevice will stop on its ownonce the session is normallycompleted. | The patient can control theelectrical stimulation levels and thestarting and stopping of eachsession. However, the device willstop on its own once the session isnormally completed. | The end user can control theelectrical stimulation levels andthe duration of the stimulationsession. | Substantiallyequivalent | None.Option to increasetreatment time has beenremoved to improvesimplicity of use.User feedback indicatedthat some users weretempted to over-use tospeed recovery | Substantiallyequivalent | None:Control is by pushbuttonin both devices.Customer Reviews showthat the additionalbuttons in the KegelFitare clear and easy tounderstand.KegelFit also displaysintensity, treatment timeremaining, and lowbattery warning. |
| PatientInteraction:ProgrammingCapabilityWhether thedevice can beprogrammed andto what extent | Electrical stimulation levelsare set by the end userEnd user can choose betweentwo stimulation programs.End user can reduce thesession timer | Electrical stimulation levels are setby the end userEnd user can choose between fourstimulation programs.End user can reduce or increase thesession timer | Electrical stimulation levels areset by the end user | Substantiallyequivalent | None.Both stimulationprograms are provensafe and effective.Reduced timer setting isthe same as thatrecommended for theApex. | Substantiallyequivalent | None.Although Kegelfit offersa choice of programs,both are effective forstress incontinence. |
| PatientInteraction:OperatorRequirementsKnowledge ortraining requiredof the operator, | Intended as part of acomplete therapyprogram with physiciancoaching. No specialknowledge or training;instruction manual provided | Over-the-counter device. No special knowledge or training required;instruction manual provided | Over-the-counter device. Nospecial knowledge or trainingrequired; instruction manualprovided | Substantiallyequivalent | None:The KegelFit device hasfewer optional settings.In both cases, no specialknowledge or training isrequired. | Identical | None |
| Software Levelof Concern | Moderate | Moderate | Moderate | Identical | None | Identical | None |
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VII Testing Summary
The following performance testing was provided in support of the substantial equivalence. The testing for KegelFit included software, electrical safety, biocompatibility and clinical. KegelFit successfully passed all testing.
Software Verification and Validation Testing
Software verification and validation testing were conducted and documentation was provided as recommended by FDA's Guidance for Industry and FDA Staff, "Guidance for the Content of Premarket Submissions for Software Contained in Medical Devices." The software for this device was considered as a "moderate" level of concern, We determine that the level of concern of the new device KegelFit is Moderate; the decision-making process is as follows:
Prior to mitigation of hazards, a failure of the Software Device cannot result in death or serious injury, either to a patient or to a user of the device. Therefore not level of concern is not Major.
But, prior to mitigation of hazards, a failure of the Software Device can result in Minor injury, such as electrical shock, either to a patient or to a user of the device.
We determine that the level of concern of the new device KegelFit is Moderate.
Electrical Safety Testing:
Electrical safety testing was conducted on KegelFit. The device complies with the IEC 60601-1 and IEC60601-1-11 standards for safety
The KegelFit has been tested to EN60601-1-2:2007 and found to be EMC testing: suitable for use in domestic establishments and in establishments directly connected to a low voltage power supply network which supplies buildings used for domestic purposes.
Biocompatibility Testing:
The same vaginal electrode is used as with the itouch Sure Bodv material:
Acrylonitrile-Butadiene-Styrene copolymer (ABS) GE MG47 Conductor Material: Stainless steel
The biocompatibility evaluation for the itouch Sure vaqinal electrode (KeqelFit Trainer) was conducted in accordance with International Standard ISO 10993:2009 biological evaluation of medical devices-Part 5: Tests for in vitro cytotoxicity and ISO 10993:2002 biological evaluation of medical devices-Part 10: Tests for irritation and delayed-type hypersensitivity. See section 14.
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Clinical Testing: A clinical literature evaluation was conducted to provide evidence of the safety and efficacv of electrical stimulation for the treatment of female stress urinary incontinence. See section 20.1 Labelling Comparison: The Labelling is substantially equivalent to that of the predicate device Apex for self diagnosis and identification of contraindications and to the predicate device itouch Sure for operating instructions. A detailed comparison of labeling between the KegelFit and the predicate device Apex was conducted to assess the safety of the KegelFit device for over-the-counter use. The objectives of this comparison were to: 1) determine if a subject can self-identify as having stress urinary incontinence using package labeling 2) self-limit usage if a contraindication is present
Customer Review Analysis:
An analysis of customer reviews of the predicate device itouch Sure from 13758 OTC sales in the EU was used to determine whether the subject can safely use the KeqelFit device using only the instructions for use (IFU) provided. A questionnaire was sent to a further 120 Ebay UK OTC customers.
Risk Management Summary
KeqelFit has been designed according to EasyMed's internal procedures with traceability between the design inputs, design outputs, verification and validation activities. KegelFit has been evaluated for risks according to EasyMed's internal procedures based on ISO 14971. The risks associated with KegelFit were reduced to as low as possible and the risk/benefit analysis was acceptable.
Conclusion
The non-clinical data supports the safety of the device, and the hardware and software verification and validation demonstrates thatKegelFit performs as intended in the specified use conditions.
The clinical literature evaluation, as well as the technological comparison to the predicate device, supports the use of electrical stimulation as an effective treatment of stress urinary incontinence in women.
Both KeqelFit and the predicate device Apex are intended for over-the-counter use. A comparison of labeling and instructions was completed to support the safety of the product labeling for selfdiagnosis and use.
An analysis of Customer Reviews of OTC sales in the EU of the predicate device itouch Sure was completed to support the Usability of the device without training. In addition, customer questionnaires were sent to 120 users of itouch Sure who purchased OTC through ebay UK, and 21 responses were received and analysed. The data included within this submission supports the use of KegelFit for over-the-counter as safe and effective. The KegelFit unit is substantially equivalent to the predicate devices and any differences between the devices do not pose any new questions of safety and effectiveness.
Submitted times: This is the first submission to FDA for this new device
§ 876.5320 Nonimplanted electrical continence device.
(a)
Identification. A nonimplanted electrical continence device is a device that consists of a pair of electrodes on a plug or a pessary that are connected by an electrical cable to a battery-powered pulse source. The plug or pessary is inserted into the rectum or into the vagina and used to stimulate the muscles of the pelvic floor to maintain urinary or fecal continence. When necessary, the plug or pessary may be removed by the user. This device excludes an AC-powered nonimplanted electrical continence device and the powered vaginal muscle stimulator for therapeutic use (§ 884.5940).(b)
Classification. Class II (performance standards).