# K190734: Linshom Respiratory Monitoring Device (LRMD)

- Pathway: 510(k) (Traditional)
- Applicant: Linshom Management, LLC
- Decided: Jan 30, 2020 after 315 days
- Product code: BZQ (Monitor, Breathing Frequency)
- Device class: 2
- Regulation: 21 CFR 868.2375
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 23 generations back to K941811 (1994). 149 ancestors in all.
2 later devices descend from it; 1 cites it directly.
0 of 152 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K120087: Exspiron, Respiratory Motion, Inc. (2012) Summary page 4.

## Most influential descendants
- K240271: Linshom Continuous Predictive Respiratory Monitoring System (CPRMS) (2024), 1 descendant of its own
- K250093: Linshom Continuous Predictive Respiratory Monitoring System (CPRMS) (2025), 0 descendants of its own

## Indications for use
Linshom Respiratory Monitoring Device (LRMD) is indicated for use by healthcare professionals in healthcare facilities, such as procedural areas and recovery rooms, to monitor breathing in adult (at least 22 years of age) patients. LRMD is a non-invasive system that graphically displays temperature changes against time and reports values of respiratory rate and seconds since last breath, along with a trend of tidal volume. LRMD measurements are used as an adjunct to other clinical information sources.

Source page: https://510kreport.com/device/K190734
Methodology: https://510kreport.com/methodology