# K993890: Digital Blood Pressure Monitor, Model DS-181

- Pathway: 510(k) (Traditional)
- Applicant: Nihon Seimitsu Sokki Co., Ltd.
- Decided: Dec 1, 1999 after 15 days
- Product code: DXN (System, Measurement, Blood-Pressure, Non-Invasive)
- Device class: 2
- Regulation: 21 CFR 870.1130
- 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 K850316 (1985). 1 ancestor in all.
80 later devices descend from it; 4 cite it directly.
0 of 82 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K850316: Unisonic Electronic Digital BP Monitor Ebm-2050, Nihon Seimitsu Sokki Co., Ltd. (1985) Summary page 1.

## Most influential descendants
- K050697: Model DS-1901 Digital Blood Pressure Monitor (2005), 77 descendants of its own
- K071596: Potable Air Massager Putifino, Model AM-7 (2008), 55 descendants of its own
- K092435: Verseo Air Pressure Massager (2010), 54 descendants of its own
- K122154: Powerplay Muscle Massager (2012), 53 descendants of its own
- K160608: NormaTec Pulse and NormaTec Pulse Pro (2016), 51 descendants of its own

## Indications for use
The DS-181 system is intended for the noninvasive measurement of systolic and diastolic blood pressure and determination of heart rate in adult patients, i.e., age 18 and above.

Source page: https://510kreport.com/device/K993890
Methodology: https://510kreport.com/methodology