# K033857: T-Tech Digital, Model WL-22XXA Series

- Pathway: 510(k) (Special)
- Applicant: Well-Life Healthcare, Inc.
- Decided: Dec 19, 2003 after 8 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: 2 generations back to K021359 (2002). 3 ancestors in all.
1 later device descends 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)
- K030537: Digi-Pro Tens/WL-2203B,2204B,2204B-P1,2204B-P2,2205B, Well-Life Healthcare, Inc. (2003) Summary page 1.

## Most influential descendants
- K100399: 4 Channels Multiple Model Digital Electrical Stimulator, Model Nuvostim IV, WL-2504A (2010), 0 descendants of its own

## Indications for use
This device is a prescription device and only for symptomatic relief of chronic intractable pain. Relaxation of muscle spasms. Prevention or retardation of disuse atrophy. Increasing local blood circulation. Muscle re-education. Immediate post-surgical stimulation of calf muscles to prevent venous thrombosis. Maintaining or increasing range of motion.

Source page: https://510kreport.com/device/K033857
Methodology: https://510kreport.com/methodology