# K980040: Electronic Muscle Stimulator - Microstim J-1304D

- Pathway: 510(k) (Traditional)
- Applicant: Nisha Communication Industries
- Decided: Jul 13, 1998 after 189 days
- Product code: IPF (Stimulator, Muscle, Powered)
- Device class: 2
- Regulation: 21 CFR 890.5850
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
No predicates in its family tree.
4 later devices descend from it; 1 cites it directly.
0 of 5 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- None. The summary cites one number, which could not be confirmed as its predicate (listed below).

## Cited in the summary but kept off the family tree
- K980028: Alt (GPT) Liquid Stable 2 Vial - Incorporating Dynamic Stabilization Technology - (DST), Trace America, Inc. (1998). Not matched in our reading of the summary (scans can blur digits), so it is kept off the family tree

## Most influential descendants
- K030998: Medrelief SE Series, Models SE-50, SE-100, SE-200, SE-300 (2003), 3 descendants of its own
- K060669: Medrelief ST Series, Models RT-50, ST-100, ST 150, ST-200, ST-300 (2006), 2 descendants of its own
- K062616: Wellnesspro 2010 (2007), 0 descendants of its own
- K062325: RS-4I Muscle Stimulator Family (2007), 0 descendants of its own

## Indications for use
(1) Relaxation of Muscle Spasm. (2) Prevention or retardation of disuse atrophy. (3) Increasing local bloog Circulation. (4) Muscle re-education. (5) Immediate Postsurgical stimulation of calg muscles to prevent venous thrombosis, (6)-Maintaining ¢r increasing range of motion.

Source page: https://510kreport.com/device/K980040
Methodology: https://510kreport.com/methodology