Used as an indoor and outdoor mobility assistive device. Never used as a transportation tool on highways and freeways
Device Story
Jupiter 50F is a motorized 4-wheeled electric scooter for mobility-impaired or elderly users. Input consists of user operation via tiller-mounted controls; system uses 24V DC motor, sealed transaxle, and Curtis controller to drive wheels. Features include adjustable speed (up to 5 mph), regenerative/dynamic braking, and optional 4-battery configuration for extended range. Operated by the user in indoor/outdoor settings. Provides mobility assistance; enhances stability via 4-wheel design and swing-arm suspension. Includes safety features like headlight, rear signal lights, and gas-filled seat post. Output is physical transport of the user. Benefits include improved independence and convenience for individuals with limited walking endurance.
Clinical Evidence
No clinical data. Substantial equivalence based on bench testing and performance comparisons. Performance testing demonstrated stability, braking efficacy on 9-degree slopes, and speed control compliance with ANSI/RESNA standards.
Indicated for physically challenged and active elderly people requiring mobility assistance for indoor and outdoor use. Not for use on highways or freeways.
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.
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2.
## JUPITER 50F SCOOTER 510(k) SUMMARY
# SUMMARY OF SAFETY AND EFFECTIVENESS
K983407
### ACEME Technologies International
#### This 510(k) Summary is submitted, in conjunction with a full submission, this 22nd 1. day of September, 1998, by:
| Company: | ACEME Technologies International<br>5580 Power Inn Road, Suite I<br>Sacramento, CA 95820<br>Tel: (916) 386-2001<br>Fax: (916) 386-3518 |
|-------------------------|----------------------------------------------------------------------------------------------------------------------------------------|
| Company Representative: | Tong Zhou, Ph.D.<br>Vice President & Research Director |
| Date Prepared: | September 22, 1998 |
| Device | |
| Device Name: | Jupiter 50F Scooters |
Generic Name: Motorized 3-wheeled Scooter Classification: Class II Product Code: 89INI
Regulation Number: 890.3800
#### 3. Predicate Device on Which We Base Equivalence
Pride Health Care Legend Scooter 510(k) number -- K926295 Product Code -- 89INI
#### 4. Description of Device
The Jupiter 50F electric scooter is a mobility assistive device for physically challenged people and elderly people. It is motorized by a 24V DC motor. Two or four 12 volt batteries supply electrical power.
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Jupiter 50F consists of seven major components: chassis, body covers, transaxle, seat, controller, batteries, and battery charger.
The chassis is divided into three parts: the tiller, the front and the rear chassis. The front and rear chassis are jointed by two pin shafts and secured by two U-shaped pins. They can be assembled or dismantled in less than a minute without using any tools. The tiller is articulated by its upper and lower parts to provide the maximum flexibility. There is a wind shield attached to the handle bar. A unique function of this is to provide a temporary table for holding coffee cup, books, and et. A Jupiter's user can write or work with convenience.
The scooter fairing are made of high-strength plastic - PBS. They cover the chassis and tiller. Their surfaces are painted by baked paint with high finishing. A headlight is installed in the front fairing and two turning lights are in the rear. Those lights enhance drive safety greatly by providing not only signals to other vehicle drivers and pedestrians, but also by lighting road surface and obstacles to avoid collision or other accidents.
A sealed drive train is used in Jupiter scooter. No moving part is exposed. A 24-volt permanent magnetic direct current motor delivers up to 400 Watts power to the system. Motor speed is reduced through gear pairs to its desired wheel shaft speed. The inbedded differential gives the right and the left wheel different speed when the scooter makes turn. All moving parts and bearings inside the gear box are well lubricated by low-viscosity grease. The design of every part is carefully calculated and tested. Such design reduces requirement in maintenance and greatly increases its reliability and ensure a long service life.
An electric dynamic brake is attached to the motor shaft. The braking function is applied when no electric current passes its inductive coils and vanishes when speed control throttle is activated. The Jupiter can stay firmly on a slope of 9 degrees without slipping. This is a very important safety feature every scooter must have in case of sudden electric circuit failure. There is a clutch handle to release the brake locking in order to free wheeling when needed.
Two 30 Ah 12-Volt sealed gel-cell batteries are secured at the top of chassis. A full charge can make a 25 miles travel. The Jupiter 50F also can accommodate four batteries. It increases ravel distance to more than 40 miles, and lowers the center of gravity of the man-vehicle system. therefore it improves its static and dynamic stability substantially.
The battery charger is built-in with a extension cord. A user can charge the batteries conveniently wherever a power outlet can be found. It takes 6 to 8 hours to charge an almost discharged battery pack back to full capacity. In an unexpected power-off event, a couple of hours charging may get enough battery energy to allow the user to drive home.
The speed of the Jupiter scooter is controlled by two potentiometers. One is used to set up its maximum speed, and the other used to vary speed from zero to its specified maximum. The maximum possible speed is 5.0 miles per hour. The Jupiter 50F uses a Curtis controller that is widely used in powered wheelchairs and scooters all over the world, including the Shopriders.
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The Jupiter 50F is a derivative from its predecessor, Jupiter 50, which is a three-wheeled scooter. The Jupiter 50 has the same aforementioned driving power train, rear chassis, electronic control system, electrical wiring system, seating, tiller, rear fairing, and wheels, except the number of front wheels and its steering mechanism.
The four-wheeled design increases the supporting area on ground surface and the swign-arm design for the wheels reduces its maximum turning angle from 900 to 31º. The Jupiter 50F users may not be able to make a sharp turning so that tip-over accidents will be greatly lessened. Our 4-wheeled Jupiter 50F did not show tip-over during its performance test and is much more stable and safer than 3-wheelers.
The Jupiter 50F is intended to be used by the physically challenged and active elderly people as a mobility assistive device. It enhance user's mobility. People who can walk but not strong enough to endue even a short distance or simply use it for convenience will find that the Jupiter scooters are ideal for them.
### 5. Similarities and Differences to Predicate Device
Our study has demonstrated that the Jupiter is substantially equivalent to the Legend 4-wheeled scooters.
#### Similarities (1).
The similarities between the Jupiter and the Legend can be identified from their appearances and performances. In principle, both scooters cab be used either indoors and outdoors, and the intended users are the physically challenged people and elderly people. The features built in the Jupiter may be easily found in those Legend.
(a). Both the Jupiter and Legend are intended to be used by physically challenged people and elderly people.
(b). Both can be used indoors and outdoors.
(c). The Jupiter 50F and Legend scooters both use a 24 volt DC permanent magnetic motor with sealed transaxle drive unit.
(d). Both use a disk-type coil-activated electric brake.
(e). The motor control boards are the same with respect to the power FET design.
(f). True regenerative and dynamic braking provide complete downhill and deceleration speed control in both scooters.
(g). Each has an industrial-typical wig-wag potentiometer, forward/reverse speed control, along with a speed limit potentiometer.
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(h). The maximum forward speeds in both scooters are in the limit of 6 miles per hour specified by ANSI/RESNA.
(i). The maximum reverse speeds in both scooters are designed to be 60% of the their maximum forward speeds, respectively.
(j). Speeds of both scooters can be controlled from zero to their maximum
(k). Both scooters feature upholstered seats with removable armrests and height adjustment capability. Seats on each swivel 360 degrees.
(1). All major dimensions are similar.
(m). Each uses two 12-volt U-1 type batteries as their power source, and each uses commercially available built-in battery charger.
(n). The console on each has a battery indicator, horn switch or button, power switch, and speed limit potentiometer.
(o). The range of each is almost the same.
### (2). Differences
There are some differences between the Jupiter and the Legend. Those differences neither are substantial, nor cause any safety concerns. As matter of fact, the Jupiter have been improved by introduced some features, such as head light and turning lights, four battery option, and bigger front wheels.
| | Jupiter 50F | Legend |
|------------------|----------------------------------------------------------------------|----------------|
| Wheels | all 10" tires | two 9"/two 10" |
| Battery | optional 4 batteries | no option |
| Lights | Front light<br>Rear signal lights | no<br>no |
| Windshield/table | yes | no |
| Seat Post | Gas-filled cylinder for auto height<br>adjustment and cushioned ride | no |
To summarize the similarities and differences, Table 1 tabulates some important structure and performance data.
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Image /page/4/Picture/2 description: The image is a black and white logo for the U.S. Department of Health & Human Services. The logo features a stylized eagle-like symbol with three curved lines representing the body and wings. The text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" is arranged in a circular pattern around the symbol.
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
NOV 6 1998
Tonq Zhou, Ph.D. Vice President and Research Director Aceme Technologies International 5580 Power Inn Road, Suite 1 Sacramento, California 95820
Re : K983405 ACEME Jupiter Scooter, Motorized 3-Wheeled Trade Name: Jupiter 50 K983407 ACEME Jupiter Scooter, 4-Wheeled Jupiter 50F Trade Name: Regulatory Class: II Product Code: INI Dated: September 23, 1998 September 28, 1998 Received:
Dear Dr. Zhou:
We have reviewed your Section 510(k) notifications of intent to market the devices referenced above and we have determined these devices are substantially equivalent (for the indications for use stated in the enclosures) 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 devices, 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.
If your devices are classified (see above) into either class II (Special Controls) or class III (Premarket Approval), they may be subject to such additional controls. Existing major regulations affecting your devices can be found in the Code of Federal Requlations, 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 regulation may result in regulatory In addition, FDA may publish further announcements action. concerning your devices 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.
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Page 2 - Tong Zhou, Ph.D.
This letter will allow you to begin marketing your devices as described in your 510(k) premarket notification. The FDA finding of substantial equivalence of your devices to legally marketed predicate devices results in a classification for your devices and thus, permits your devices to proceed to the market.
If you desire specific advice for your devices 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 devices, 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
Enclosures
{6}------------------------------------------------
#### TI. Indication for Use Statement
510(k) Number (if known). K 983407
Device Name: Jupiter 50F Motorized 4-Wheeled Vehicle
## Indications for Usc
Used as an indoor and outdoor mobility assistive device. Never used as a transportation tool on highways and freeways
Concurrence of CDRH, Office of Device Evaluation (ODE)
toscodel
(Division Sign-Off) Division of General Restorative Devices 510(k) Number
Prescription Use (Per 21 CFR 801.109) Over-The Counter Use
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Part 1 — Search, results, and everyday workflows 16 min
Part 2 — Embeddings: the galaxy map 3 min
1. Search: exact and fuzzy
Type a phrase like "coronary artery calcification" into the search box. You get two kinds of results. Exact results match the literal phrase — prefix searches work ("coronary artery calcificati") but suffix searches do not. Fuzzy results match on the meaning and intent of your phrase rather than the exact words, and are sorted by relevance score. Hover over the Exact or Fuzzy badge on any row to see exactly why it matched.
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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.
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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
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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.
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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.
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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.