# K121144: Electronic Stethoscope

- Pathway: 510(k) (Traditional)
- Applicant: Sharp Corporation
- Decided: Sep 26, 2012 after 163 days
- Product code: DQD (Stethoscope, Electronic)
- Device class: 2
- Regulation: 21 CFR 870.1875
- 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 K771653 (1977). 7 ancestors in all.
No later device cites it as a predicate yet.
0 of 8 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K050159: Modification to: 3M Littmann Electronic Stethoscope, Model 3000, 3M Company (2005) Summary page 1.
- K041934: 3M Littmann Electronic Stethoscope, Model 3000, 3M Company (2004) Summary page 1.
- K083903: 3M Littmann Electronic Stethoscope, Model 3200, 3M Company (2009) Summary page 1.

## Indications for use
The BM-520 Electronic Stethoscope is intended for medical diagnosticpurposes only. It may be used for the detection and amplification of sounds from heart, lungs, blood vessels, and other internal organs. It can be used on any person undergoing a physical assessment.

Source page: https://510kreport.com/device/K121144
Methodology: https://510kreport.com/methodology