# K220503: TENS device-EmeTerm 2, Model: YF-ZTY-E2

- Pathway: 510(k) (Traditional)
- Applicant: Wat Medical Technology, Inc.
- Decided: Apr 23, 2022 after 60 days
- Product code: GZJ (Stimulator, Nerve, Transcutaneous, For Pain Relief)
- Device class: 2
- Regulation: 21 CFR 882.5890
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 6 generations back to K961050 (1997). 8 ancestors in all.
No later device cites it as a predicate yet.
0 of 9 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K172478: TENS device-EmeTerm, CinvStop, Wat Medical Technology (Ningbo) Co., Ltd. (2018) Summary page 4.

## Indications for use
TENS device-EmeTerm 2 is a wearable device for the treatment of nausea and vomiting caused by motion sickness and pregnancy.

Source page: https://510kreport.com/device/K220503
Methodology: https://510kreport.com/methodology