K253257 · Jiangsu Intco Medical Products Co., Ltd. · INI · Jun 8, 2026 · Physical Medicine
Device Facts
Record ID
K253257
Device Name
Virgo Mobility Scooter (Virgo-D,Virgo-F)
Applicant
Jiangsu Intco Medical Products Co., Ltd.
Product Code
INI · Physical Medicine
Decision Date
Jun 8, 2026
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 890.3800
Device Class
Class 2
Attributes
Therapeutic
Indications for Use
The intended use of this device is to provide mobility to persons limited to a seated position that have the capability of operating a scooter.
Device Story
Battery-operated, 4-wheeled motorized scooter (Virgo-D separable, Virgo-F one-piece) for indoor/outdoor use; provides mobility to seated users. Rider operates via handlebar-mounted speed control lever and steering column; Dynamic 50A electronic controller manages 270W motor and electromagnetic braking system. Device features steel frame, seat with backrest, armrests, and anti-tip wheels; foldable for storage/transport. Output is physical mobility; healthcare provider/patient use is independent. Benefits include restored mobility for individuals with limited walking ability.
Clinical Evidence
No clinical data. Substantial equivalence supported by bench testing, including ISO 7176 series for stability, braking, energy consumption, dimensions, speed, fatigue strength, and electromagnetic compatibility (IEC 60601-1-2), and biocompatibility testing (ISO 10993-5, -10, -23).
Technological Characteristics
Steel frame; 270W/24Vdc motor; Dynamic 50A electronic controller; electromagnetic brake; 24V 15Ah lead-acid battery; PU handlebar/armrests; PVC seat upholstery; PA6+GF30/ABS dashboard. Foldable form factor. Complies with ISO 7176 series, IEC 60601-1, and IEC 60601-1-2. Off-board charger (100-240VAC input, 24VDC/2A output).
Indications for Use
Indicated for adults with mobility limitations who are restricted to a seated position and possess the physical and cognitive capability to operate a motorized scooter.
Regulatory Classification
Identification
A motorized three-wheeled vehicle is a gasoline-fueled or battery-powered device intended for medical purposes that is used for outside transportation by disabled persons.
{0}
FDA U.S. FOOD & DRUG ADMINISTRATION
June 8, 2026
Jiangsu Intco Medical Products Co., Ltd.
% Doris Chen
Regulatory Affairs Specialist
Shanghai Jiushun Enterprise Management Tech Service Co., Ltd
Room 1502, BaoAn Building, No.800 Dongfang Road
Shanghai, 200122
China
Re: K253257
Trade/Device Name: Virgo Mobility Scooter (Virgo-D, Virgo-F)
Regulation Number: 21 CFR 890.3800
Regulation Name: Motorized Three-Wheeled Vehicle
Regulatory Class: Class II
Product Code: INI
Dated: May 8, 2026
Received: May 8, 2026
Dear Doris Chen:
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"
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K253257 - Doris Chen
Page 2
(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).
Your device is also subject to, among other requirements, the Quality Management System Regulation (QMSR) (21 CFR Part 820), which includes, but is not limited to, ISO 13485 clause 7.3 (Design controls), ISO 13485 clause 8.3 (Nonconforming product), ISO 13485 clause 8.5.2 (Corrective action), and ISO 13485 clause 8.5.3 (Preventative action). Please note that regardless of whether a change requires premarket review, the QMSR requires device manufacturers to review and approve changes to device design and production (ISO 13485 clause 7.3 and ISO 13485 clause 7.5) and document changes and approvals in the Medical Device File (ISO 13485 clause 4.2.3).
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-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-reporting-combination-products); good manufacturing practice requirements as set forth in the Quality Management System Regulation (QMSR) (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-devices/device-advice-comprehensive-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-devices/medical-device-safety/medical-device-reporting-mdr-how-report-medical-device-problems.
For comprehensive regulatory information about medical devices and radiation-emitting products, including information about labeling regulations, please see Device Advice (https://www.fda.gov/medical-devices/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-devices/device-advice-comprehensive-regulatory-assistance/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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K253257 - Doris Chen
Page 3
Sincerely,
**Tushar Bansal -S**
Tushar Bansal, PhD
Acting Assistant Director, Acute Injury Devices Team
DHT5B: Division of Neuromodulation and
Physical Medicine 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
Please type in the marketing application/submission number, if it is known. This textbox will be left blank for original applications/submissions.
K253257
?
Please provide the device trade name(s).
?
Virgo Mobility Scooter (Virgo-D, Virgo-F)
Please provide your Indications for Use below.
?
The intended use of this device is to provide mobility to persons limited to a seated position that have the capability of operating a scooter.
Please select the types of uses (select one or both, as applicable).
☐ Prescription Use (Part 21 CFR 801 Subpart D)
☑ Over-The-Counter Use (21 CFR 801 Subpart C)
?
Virgo Mobility Scooter
Page 8 of 43
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# 510(k) Summary
This summary of 510(k) safety and effectiveness information is being submitted in accordance with the requirements of 21 CFR 807.92.
The assigned 510(k) Number: K253257
Summary Prepared Date: 6/05/2026
1. Applicant :
- Sponsor Name: JIANGSU INTCO MEDICAL PRODUCTS CO., LTD.
- Address: No. 298 Yandunshan Road, Zhenjiang New District 212132 Jiangsu P.R. China.
- Contact Person (including title): Shiqun Liu (Manager)
- Phone: +86-511-83174088
- E-mail: liushiqun@intco.com
3 Submission Correspondent:
- Contact Person: Doris Chen
- Shanghai Jiushun Enterprise Management Technology Service Co., Ltd.
- Address: Room 1502, BaoAn Building, No.800 Dongfang Road, Shanghai, China.
- Tel: +86-21-50931939
- Email: doris-chen@isosh.com
4 Subject Device Information:
- Type of 510(k) submission: Traditional
- Trade Name: Virgo Mobility Scooter
- Models: Virgo-D, Virgo-F
- Common Name: Scooter
- Classification Name: vehicle, motorized 3-wheeled
- Review Panel: Physical Medicine
- Product Code: INI
- Regulation Number: 21CFR 890.3800
- Regulation Class: II
JIANGSU INTCO MEDICAL PRODUCTS CO., LTD.
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# 5 Predicate Device Information:
- Sponsor: Heartway Medical Products Co., Ltd.
- Common Name: POWERED SCOOTER
- Trade Name: Auto Folding Scooter
- 510(k) number: K220227
- Review Panel: Physical Medicine
- Product Code: INI
- Regulation Number: 21 CFR 890.3800
- Regulation Class: II
# 2. Device Description
The Virgo Mobility Scooter (Model: Virgo-D, Virgo-F) is an indoor and outdoor use electrical scooter that is battery operated. It has a base with steel frame, two front wheels, two rear wheels, two anti-tip wheels, a seat, a handle bar to control the driving function, a steering column, a control panel, an electric motor, an electromagnetic brake, a rechargeable battery with an off-board charger, a back-rest and 2 armrests. The Virgo Mobility Scooter is foldable, which makes it very compact to store or transport. The difference between the two models is that Virgo-D is separable and Virgo-F is one-piece. The movement of the electrical scooter is controlled by the rider who uses speed control lever to control the direction and speed of an electrical scooter. The motor power is 270W. The device uses a Dynamic 50A electronic controller. The device is provided with an off-board battery charger (Input: AC100-240V, Output: DC 24V, 2 A). The maximum weight capacity of Virgo Mobility Scooter is 299.8 lbs (136 kg), and its maximum forward speed is 5.0 mph (8 km/h). The dimensions of (Length * Width * Height) the device before and after folded are shown in the table below.
| Model | Unfolded (Length * Width * Height) | Folded (Length * Width * Height) |
| --- | --- | --- |
| Virgo-D | 1045mm x 485mm x 880mm | 1045mm x 485mm x 350mm |
| Virgo-F | 1045mm x 485mm x 880mm | 1045mm x 485mm x 350mm |
JIANGSU INTCO MEDICAL PRODUCTS CO., LTD.
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### 3. Indications for Use
The intended use of this device is to provide mobility to persons limited to a seated position that have the capability of operating a scooter.
### 4. Comparison with predicate device
The Virgo Mobility Scooter has the same technological characteristics and fundamental design as the predicate device. The Virgo Mobility Scooter and the predicate device are designed to provide mobility to persons restricted to a sitting position. The Virgo Mobility Scooter has equivalent Indications for Use as the predicate device. The differences between subject device and predicate device do not raise any new questions of safety or effectiveness.
Table 1 General Comparison
| Elements of Comparison | Subject Device | Predicate Device | Verdict |
| --- | --- | --- | --- |
| Manufacturer | JIANGSU INTCO MEDICAL PRODUCTS CO., LTD. | Heartway Medical Products Co., Ltd. | -- |
| K Number | K253257 | K220227 | -- |
| Product Code | INI | INI | Same |
| Regulation Number | 21 CFR 890.3800 | 21 CFR 890.3800 | Same |
| Device Trade Name | Virgo Mobility Scooter | Auto Folding Scooter | -- |
| Model | Virgo-D, Virgo-F | S21F | -- |
| Indications for Use | The intended use of this device is to provide mobility to persons limited to a seated position that have the capability of operating a scooter. | The device is intended for medical purposes to provide mobility to persons restricted to a sitting position. | Similar |
| User | Adults | Adults | Same |
| Number of Wheels | 4 | 4 | Same |
| Frame Type | Steel | Fixed / Aluminum alloy | Different |
| Rear Wheels | Size:7.5'x2.5' Type: Pu Solid Tire x 2 | Size:8' x 2' Type: PU solid tire x 2 | Different |
| Front wheels | Size:7.5'x2.5' Type: Pu Solid Tire x 2 | Size:7' x 1.6' Type: PU solid tire x 2 | Different |
| Brake System | Electromagnetic brake | Not publicly available | |
| Upholstery inflammability | Pass | Pass | Same |
JIANGSU INTCO MEDICAL PRODUCTS CO., LTD.
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| Elements of Comparison | Subject Device | Predicate Device | Verdict |
| --- | --- | --- | --- |
| testing | | | |
| Overall Dimensions (L*W*H) | Virgo-D (1045mm x 485mm x 880mm) Virgo-F (1045mm x 485mm x 880mm) | 840 mm x 460 mm x 770mm | Different |
| Design style | Foldable | Foldable | Same |
| Drive System | Rear wheel drive | Not publicly available | |
| Weight Capacity | 299.8lbs (136kg) | 253 lbs. (115 kg) | Different |
| Max Speed | 5.0 mph (8.0 km/h) | 3.75 mph (6 km/h ) | Different |
| Battery Rating | One 24V DC, 15Ah Lead-acid Battery | One 25.2 Vdc, 11.5 Ah Lithium-ion Battery | Different |
| Charger Type | Off-board external type Model:HP0060W(B)-M Input:100-240 VAC, 50-60Hz, 1.2-0.5A Output: 24VDC , 2.0A | Off-board external type Model: NL07C-25HT Input: 110-240 Vac, 50/60Hz, 84 W Output: 29.05 Vdc, 2.5 A | Different |
| Cruise Range | 9.9 miles (16 km) | 9.3 miles (15 km) | Different |
| Patient-contacting parts and materials | Handlebar: PU Seat (cushion & backrest): PVC artificial leather | Handlebar: TPU Seat cushion: PU Foam Seat & backrest leather: Vinyl Fabric | Different |
| Controller Type | Dynamic, R series, DR50 | Dynamic, R series, DR50 | Same |
| Motor Type | 3.0 A max, 24 Vdc , 270 W | 2.5 A max, 24 Vdc, 180 W | Different |
| Scooter Weight | with Battery Virgo-D(99.2lbs/45Kg) Virgo-F(99.2lbs/45Kg) without Battery Virgo-D(76lbs/34.5Kg) Virgo-F(76lbs/34.5Kg) | with Battery 51.8 lbs. (23.5 kg) without Battery 46.9 lbs. (21.3 kg) | Different |
| Suspension | None | None | Same |
| Turning Radius | 51.18' / 1300mm | 43.7' / 1110 mm | Different |
| Static / Dynamic Stabilities(Degrees) | 10/6 | 6/3 | Different |
| Ground Clearance | Virgo-D:1.18' (30mm) Virgo-F:1.18' (30mm) | 1.18' (30 mm) | Same |
JIANGSU INTCO MEDICAL PRODUCTS CO., LTD.
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| Elements of Comparison | Subject Device | Predicate Device | Verdict |
| --- | --- | --- | --- |
| Kerb Climbing Ability | 1.8"(45 mm) | 0.59" (15 mm) | Different |
| Performance Test | Comply with ISO 7176 series | Comply with ISO 7176 series & RESNA WC-1 series, RESNA WC-2 series | Similar |
| Biocompatibility | | | |
| Cytotoxicity | Under the conditions of the study, the device is noncytotoxic. | Under the conditions of the study, the device is noncytotoxic. | Same |
| Sensitization | Under the conditions of the study, the device is nonsensitizing. | Under the conditions of the study, the device is nonsensitizing. | Same |
| Irritation | Under the conditions of the study, the device is nonirritating. (Intracutaneous Irritation Test) | Under the conditions of the study, the device is nonirritating. (Skin Irritation Test) | Similar |
## COMPARISON DISCUSSION
Both devices are classified as Vehicle, Motorized 3-Wheeled per 21 CFR 890.3800 under product code INI. The indications for use for both devices are the same. Both devices, Virgo Mobility Scooter and Auto Folding Scooter, use the same scooter technologies.
### Frame Type
The frame materials of the two devices are different. The subject device uses a steel frame and the predicate device use an aluminum alloy frame. The subject device has passed the requirements of ISO 7176 series standards. It is demonstrated there are no new safety and effectiveness concerns raised by the frame material differences for the subject device.
### Dimensions
The dimensions of the two devices are different. Unfolded dimensions for the subject device are 1045mm x 485mm x 880mm (Virgo-D & Virgo-F). Unfolded dimensions for the predicate device are 840 mm x 460 mm x 770mm, and the differences between two devices are so small and are validated by the compliance testing of ISO 7176 serial standard on the subject device. It is demonstrated there are no new safety and effectiveness concerns raised by the unfolded dimensional differences for the subject device.
JIANGSU INTCO MEDICAL PRODUCTS CO., LTD.
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### **Wheel size**
Front wheel size are different for the two devices, which are 7.5' x 2.5' (190 x 63.5 mm) for subject device and 7' x 1.6' (177.8 x 40.64 mm) for predicate device . As seen from the data, the differences for the front wheel size and type are small. These differences will not raise any new safety and effectiveness concerns for the subject device.
### **Weight Capacity**
The maximum loading of the subject device is 299.8lbs (136kg) and it is 253 lbs (115 kg) for the predicate device. The maximum loading of the subject device is larger than the predicate device. There are no new safety and effectiveness concerns due to the difference of the maximum loading for the subject device.
### **Max Speed**
The maximum speed for the subject device is 5.0 mph (8.0 km/h)and the predicate device has maximum speed of 3.75mph(6.0 km/h).The difference of the max speed between the two devices is small and there are no new safety and effectiveness concerns raised by the difference of the max speed for the subject device.
### **Battery Rating**
The battery ratings for both devices are different. The subject device used sealed lead-acid battery rating at 24 Vdc, 15 Ah, and the predicate device used one Lithium-ion battery rating at 25.2 Vdc, 11.5 Ah. The AGM battery for the subject device has passed the requirements of ISO 7176-14:2008, so there are no new safety and effectiveness concerns raised by subject device.
### **Charger Type**
The battery chargers for the predicate and subject devices are different, but the battery charger for the subject device passes the EMC standard: IEC 60601-1-2:2014. There are no new safety and effectiveness concerns raised by using different battery charger for the subject device.
### **Cruise Range**
The cruise ranges for the predicate and the subject devices are 9.9 miles and 9.3 miles.
The cruise range of subject device is more than the predicate device. The
JIANGSU INTCO MEDICAL PRODUCTS CO., LTD.
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difference of the cruise ranges will not raise any new safety and effectiveness concerns for the subject device.
#### **Patient-contacting parts and materials**
The patient-contacting parts and materials are different for both devices. But, the patient-contacting parts of the subject device passed biocompatibility testing per ISO 10993-5:2009, ISO 10993-10:2021, and ISO 10993-23:2021. The differences between them do not raise any new safety and effectiveness concerns for the subject device.
#### **Motor Type**
The motor types for both devices are different. The subject device uses motor of 270W/ 24 Vdc/ 3.0 A , and the predicate device uses motor of 180 W /24 Vdc / 2.5 A. But the motor used in the subject device passed the requirements of the EMC standards: IEC 60601-1-2: 2014, and performance standards: ISO 7176-14:2008. So, there are no new safety and effectiveness concerns raised due to different motor used by the subject devices.
#### **Scooter Weight**
The scooter weight for both devices are different. The scooter weight with battery for the Virgo-D and Virgo-F are 99.2lbs (45Kg). The scooter weight with battery for predicate device with battery weighs 51.8 lbs. There are no new safety and effectiveness concerns raised by the different scooter weights.
#### **Turning Radius**
The turning radius for the predicate device is 43.7' and it is 51.18' for the subject device. The turning radius is related to the size of the scooter. The dimensions of the subject device is larger than the predicate device, so the turning radius of the subject device is also larger than the predicate device. There are no new safety and effectiveness concerns raised by the differences in turning radius.
JIANGSU INTCO MEDICAL PRODUCTS CO., LTD.
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### **Static/Dynamic Stabilities**
The static/dynamic stabilities for the subject device are 10/6 degrees, which are higher than the predicate device 6/3 degrees.. Therefore, there are no new safety and effectiveness concerns raised by the different static/dynamic stabilities for the subject device.
### **Kerb Climbin Ability**
Maximum obstacle climbing for two devices is 1.8'(45 mm) for subject device and 0.59' (15 mm) for predicate device. Subject device has larger obstacle climbing. There are no new safety and effectiveness concerns raised by the difference of the maximum obstacle climbing for the subject device.
### **Non-Clinical Test Conclusion**
Non clinical tests were conducted to verify that the proposed device met all design specifications and was Substantially Equivalent (SE) to the predicate device. The test results demonstrated that the proposed device complies with the following standards:
ISO 7176-1:2014 Wheelchairs – Part 1: Determination of staticstability.
ISO 7176-2:2017 Wheelchairs – Part 2: Determination of dynamic stability of electric wheelchairs
ISO 7176-3:2012 Wheelchairs – Part 3: Determination of effectiveness of brakes.
ISO 7176-4:2008 Wheelchairs – Part 4: Energy consumption of electric wheelchairs and scooters for determination of theoretical distance range
ISO 7176-5:2008 Wheelchairs – Part 5: Determination of dimensions, mass and manoeuvring space.
ISO 7176-6:2018 Wheelchairs – Part 6: Determination of maximum speed, acceleration and deceleration of electric wheelchairs
ISO 7176-7:1998 Wheelchairs – Part 7: Measurement of seating and wheel dimensions.
ISO 7176-8:2014 Wheelchairs – Part 8: Requirements and test methods for static, impact and fatigue strengths.
JIANGSU INTCO MEDICAL PRODUCTS CO., LTD.
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ISO 7176-9:2009 Wheelchairs – Part 9: Climatic tests for electric wheelchairs
ISO 7176-10:2008 Wheelchairs – Part 10: Determination of obstacle-climbing ability of electrically powered wheelchairs
ISO 7176-11:2012 Wheelchairs – Part 11: Test dummies.
ISO 7176-13:1989 Wheelchairs – Part 13: Determination of coefficient of friction of test surfaces
ISO 7176-14:2008 Wheelchairs – Part 14: Power and control systems for electrically powered wheelchairs and scooters – Requirements and test method.
ISO 7176-15:1996 Wheelchairs - Part 15: Requirements for information disclosure, documentation and labeling
ISO 16840-10:2021 Wheelchair seating - Part 10: Resistance to ignition of postural support devices requirements and test method.
ISO 7176-21:2009 Wheelchairs Part 21: Requirements and test methods for electromagnetic compatibility of electrically powered wheelchairs and scooters, and battery chargers
ISO 7176-22:2014 Wheelchairs – Part 22: Set-up procedures
ISO 7176-25:2013 Wheelchairs – Part 25: Batteries and chargers for powered wheelchairs IEC 60601-1:2005 Medical electrical equipment - Part 1: General requirements for basic safety and essential performance.
IEC 60601-1-2:2014 Medical electrical equipment -- Part 1-2: General requirements for basic safety and essential performance --Collateral Standard: Electromagnetic disturbances --Requirements and tests.
AIM 7351731 Rev 3.00 2021--Medical Electrical Equipment and System Electromagnetic Immunity Test for Exposure to Radio Frequency Identification Readers
ISO 10993-5: 2009, Biological evaluation of medical devices – Part 5: Tests for In Vitro cytotoxicity.
ISO 10993-10:2021 Biological evaluation of medical devices -- Part 10: Tests for skin sensitization.
ISO 10993-23:2021, Biological evaluation of medical devices -- Part 23: Tests for irritation
JIANGSU INTCO MEDICAL PRODUCTS CO., LTD.
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## Biocompatibility testing
Biocompatibility of the Virgo Mobility Scooter was evaluated in accordance with the FDA guidance “Use of International Standard ISO 10993-1, “Biological evaluation of medical devices - Part 1: Evaluation and testing within a risk management process” and International Standard ISO 10993-1 “Biological Evaluation of Medical Devices – Part 1: Evaluation and Testing Within a Risk Management Process,” as recognized by FDA. The following tests were performed:
Cytotoxicity (ISO 10993-5:2009)
Intracutaneous irritation (ISO 10993-23:2021)
Sensitization (ISO 10993-10:2021)
| Patient-contacting Parts | Material | Direct or Indirect contact / Contact classification & contact duration | Tests conducted | Conclusion |
| --- | --- | --- | --- | --- |
| Seat cushion/Back cushion | PVC | Direct-contact / Surface contact/Intact skin/ Repeated use for a duration of several hours per day, over a period of up to 5 Years (long-term >30 days) | Cytotoxicity Sensitization Intracutaneous Irritation tests | Pass |
| Handle bar/Armrest | PU | Direct-contact / Surface contact/ Intact skin/ Repeated use for a duration of several hours per day, over a period of up to 5 Years (long-term >30 days) | Cytotoxicity Sensitization Intracutaneous Irritation tests | Pass |
| Dashboard complete set | PA6+GF30/ ABS | Direct-contact / Surface contact/ Intact skin/ Repeated use for a duration of several hours per day, over a period of up to 5 Years (long-term >30 days) | Cytotoxicity Sensitization Intracutaneous Irritation tests | Pass |
Note:(1) PVC【polyvinyl chloride】; (2) PU【polyurethane】; (3)PA6+GF30【PA6+GF30 is a 30% glass fibre reinforced polyamide】/ABS【Acrylonitrile-butadiene-styrene】
JIANGSU INTCO MEDICAL PRODUCTS CO., LTD.
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### **Electrical safety and electromagnetic compatibility (EMC)**
Electrical safety and EMC testing were conducted on the Virgo Mobility Scooter . The scooter complies with the IEC 60601-1, IEC 60601-1-2 and the AIM 7351731 for EMC.
### **Clinical Testing**
Based on the similarities of the device specifications, intended use, indications for use between the Virgo Mobility Scooter and its predicate device, no clinical studies were needed to support this 510(k) Premarket Notification.
### **5. Conclusion**
The Virgo Mobility Scooter is substantially equivalent to the predicate device. The non-clinical testing demonstrates that the subject device is as safe, as effective and performs as well as the predicate device, Auto Folding Scooter (K220227).
JIANGSU INTCO MEDICAL PRODUCTS CO., LTD.
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Exact vs. fuzzy search: what's the difference?
Exact matches on the literal phrase (prefix search works, suffix does not). Fuzzy matches on the meaning and intent of the phrase rather than the exact words. Hover over the badge on any row to see why it matched.
You search "coronary artery calcification" and want only software devices with AI. What two filters do you apply?
Narrow by SaMD (software-only devices), then narrow by AI/ML (devices with AI).
2. The results table
Scroll right in the results table. The intended use is extracted for you — no need to open the PDF. The device story gives a high-level snapshot of what the device does and how it's used. The AI Performance sub-table shows each output name, acceptance criteria, observed values, and development/test dataset descriptions — the same format Innolitics uses for regulatory strategy outputs, and the fastest high-level fingerprint of an AI device. It is AI-generated but has been very reliable in practice.
Where do you find a device's intended use without opening the PDF?
Scroll right in the search results table. The intended use column is extracted for you; no need to dig into the 510(k) summary PDF.
What does the AI Performance sub-table show, and why is it useful?
Output name, acceptance criteria, observed values, development dataset description, and test dataset description. It's the same format we use for regulatory strategy output and Fast 510(k) input, and the fastest high-level fingerprint of an AI device. AI-generated but reliable in practice.
3. Judging fuzzy relevance
Fuzzy results trail off in relevance as you scroll. Use three signals to decide how far down to go: the fuzzy badge explanations, the intended use column, and whether your target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, you're past the relevant zone. A top hit with a low score (~0.4) and a stretched explanation is a hint the closest predicates are far away — the project may be headed for De Novo. Note the fuzzy search is a pattern match: it doesn't handle negation ("not") well, and hardware devices can appear — filter by SaMD/AI ML to cut them.
How do you judge how far down fuzzy search results to go?
Use the relevancy signals: the fuzzy badge explanations, the intended use column, and whether the target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, results are trailing off in relevancy.
4. Device detail page: chat and citations
Click a device name to open its detail page: device facts on the left, a chat window on the right. Ask something like "Describe the training data". The answer carries little citation bubbles — click one to jump to the highlighted passage in the source PDF, so you can verify every AI answer against the document. There's also a Download PDF button for sharing.
How do you verify an AI chat answer on the device detail page?
Click the citation bubbles to jump to the relevant highlight in the source document.
Reading rule for every project: how many summaries do you read in full?
At least the three most relevant 510(k) or De Novo summaries, in full. After that, use targeted chat questions to confirm your memory quickly. The tool supports this professional habit — it doesn't replace it.
5. Side-by-side comparison
Select multiple rows in the results table (aim for under ~10), then open the PDF Viewer tab. Ask one question — it goes to all selected devices in parallel, each with citations. This is the fastest way to compare and contrast devices: training data, PCCP scope, how they handled adding new scanners, and so on.
What does the side-by-side PDF viewer mode do?
Select multiple devices, open the PDF viewer tab, and ask one question (e.g., "Describe the training data"). It queries all selected devices simultaneously with citations, so you can compare and contrast quickly.
6. Collections
With rows selected, go to the Collections tab and create a labeled collection (e.g., "Cobb Angle Project"). Reload that selection any time — before a client call, pull up the collection and ask questions across all of its devices at once.
How do you save a set of selected devices for later use?
Select the rows, go to the Collections tab, and create a labeled collection (e.g., "Cobb Angle Project"). You can reload the selection anytime and carry it into the PDF viewer and other tabs that support selections.
7. Product codes and the regulations tree
Click a product code in the results to jump to it in the regulations tree — identification text, sibling product codes, and devices you can open in a PDF viewer on the right. Click a regulation number to see its identification, special controls, and related product codes. You can also search by product code or regulation number at the top of the tree. Always read the special controls if any exist for your device — it broadens your search and sharpens pre-kickoff research.
What can you do from the regulations tree view?
Browse product codes and regulation numbers, read the identification text and special controls, browse sibling product codes, open device PDFs on the right, and search by product code or regulation number at the top of the tree.
8. Chart view
Click Show Chart and segment by regulation number (or product code) to see which regulations dominate your result set. Clicking a regulation takes you into the regulations tree. Great for spotting that most matches are, say, hardware laparoscopic devices — a cue to go back and filter.
How do you see which regulations dominate a search result set?
Click "Show Chart" and segment by Regulation Number. Clicking a regulation takes you to the regulations tree.
9. The predicate graph
Open the Predicates tab for a family-tree view of predicate relationships. Click a node to trace its parents and children; selections from search carry over pre-selected. Commonly predicated devices are worth reading — a lot of people predicated them for a reason. The visual lineage is also handy on client calls, e.g. to show how a predicate family evolved and justify why your predicate still holds.
In the predicate graph, why are commonly predicated devices worth reading?
A lot of people predicated them for a reason. Clicking a node traces parents and children, and selections from search carry over pre-selected.
10. Embeddings: the galaxy map
The Embeddings tab plots every matching document in a 2-D "galaxy map" where semantically similar devices cluster together. Hover or click clusters to explore, and let AI label the clusters for you. Embeddings beat product codes for grouping: two devices can carry different product codes (LLZ vs. QIH) yet do the same thing — the embedding captures the meaning of the intended use and device story. This is also exactly how retrieval-augmented generation (RAG) works under the hood, and it makes a great visual on client calls.
Try it yourself
Head to the search page and work through a few of these AI/ML fuzzy searches to build intuition: perivascular fat on CT · aortic valve calcification opportunistic screening on noncontrast CT · breast cancer prediction on digital pathology slides · autism detection · gestational age prediction · a hearing aid that can also detect a pulse · foundation model based analysis of ECG · large language models · penetration test. Watch how the relevance scores, intended use, and AI Performance tables tell you when results stop being meaningful.