# K972487: Emg Retrainer

- Pathway: 510(k) (Traditional)
- Applicant: Chattanooga Group, Inc.
- Decided: Sep 26, 1997 after 86 days
- Product code: HCC (Device, Biofeedback)
- Device class: 2
- Regulation: 21 CFR 882.5050
- 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 K892649 (1989). 3 ancestors in all.
10 later devices descend from it; 2 cite it directly.
0 of 14 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K897132: Pathway II Electromyograph, The Prometheus Group (1991). Our OCR of the scanned summary read K891732, FDA’s number for Thaisan Gloves (Patient Exam Gloves - Latex) (Thaisan Industries Co., Ltd.). Corrected to the number with two digits swapped whose FDA name carries the summary’s words for the device, “The Prometheus Group Pathway II Electromyography”.
- K892649: Verimed Myoexorciser Iii (Myo Iii), Verimed Holdings, Inc. (1989) Summary page 4.
- K915858: MYOTRAC2, Thought Technology, Ltd. (1992) Summary page 4.

## Most influential descendants
- K053223: Triton/Tru-Trac/TX/Triton DTS Traction (2006), 8 descendants of its own
- K151640: Eltrac 471 (2015), 1 descendant of its own
- K214037: Ergo-Flex Technologies Back on Trac (BOTGEN1) and Cervi-Trac (2024), 0 descendants of its own
- K222912: c1Trac (2023), 0 descendants of its own
- K150695: Modpod (2015), 0 descendants of its own

## Indications for use
1. To detemine the activation timing of muscles. a) retraining of muscle activation b) coordination of muscle activation 2. An indication of the force produced by muscle a) control and maintenance of muscle contractions 3. For use in relaxation training and muscle re-education.

Source page: https://510kreport.com/device/K972487
Methodology: https://510kreport.com/methodology