# K050036: Fes Cycle Ergometer, Model RT300-S

- Pathway: 510(k) (Abbreviated)
- Applicant: Restorative Therapies, Inc.
- Decided: Jun 27, 2005 after 171 days
- Product code: GZI (Stimulator, Neuromuscular, External Functional)
- Device class: 2
- Regulation: 21 CFR 882.5810
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 1 generation back to K841112 (1984). 1 ancestor in all.
2 later devices descend from it; 1 cites it directly.
0 of 4 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K841112: Tti Rehabilatation Gym Sys, Therapeutic Technologies, Inc. (1984) Summary page 1.

## Most influential descendants
- K170132: MyoCycle Home, MyoCycle Pro (2017), 1 descendant of its own
- K213925: MyoCycle MC-2 (Home / Home + / Pro / Pro +) (2022), 0 descendants of its own

## Indications for use
The RT300-S (adult version) and RT300-SP (pediatric version) are intended for general rehabilitation for: a. Relaxation of muscle spasms b. Prevention or retardation of disuse atrophy c. Increasing local blood circulation d. Maintaining or increasing range of motion The RT300-SP (pediatric version), is intended for population ages 4 to 12 years.

Source page: https://510kreport.com/device/K050036
Methodology: https://510kreport.com/methodology