# K161907: Pressure Therapy System

- Pathway: 510(k) (Traditional)
- Applicant: Xiamen Senyang Co., Ltd.
- Decided: Feb 23, 2017 after 226 days
- Product code: IRP (Massager, Powered Inflatable Tube)
- Device class: 2
- Regulation: 21 CFR 890.5650
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 5 generations back to K914774 (1992). 6 ancestors in all.
1 later device descends from it; 1 cites it directly.
0 of 8 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K113275: Compressible Limb Therapy System, Wonjin Mulsan Co., Ltd. (2012) Summary page 4.

## Most influential descendants
- K181409: Pressure Therapy System PT1003 (2019), 0 descendants of its own

## Indications for use
The device is indicated for use by medical professionals and patient at home, who are under medical supervision, in treating many conditions, such as: Primary lymphedema, edema following trauma and sport injuries, post immobilization edema, venous insufficiencies, lymphedema.

Source page: https://510kreport.com/device/K161907
Methodology: https://510kreport.com/methodology