# K034046: RNK Telephonic Stethoscope, Model TR-1

- Pathway: 510(k) (Traditional)
- Applicant: Rnk Products
- Decided: Mar 10, 2004 after 72 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: 3 generations back to K952882 (1996). 4 ancestors in all.
32 later devices descend from it; 4 cite it directly.
0 of 37 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K963678: Caretone II, American Telecare, Inc. (1997) Summary page 2.
- K973873: Digital Personal Telemedicine Module, Digital PTM 1, American Telecare, Inc. (1997) Summary page 2.

## Most influential descendants
- K072026: RNK Electronic Stethoscope (2007), 29 descendants of its own
- K102893: PCP/PC Stethoscope (2011), 26 descendants of its own
- K160401: Tyto Stethoscope (2016), 21 descendants of its own
- K181612: Tyto Stethoscope (OTC) (2018), 19 descendants of its own
- K200776: Eko CORE (2020), 13 descendants of its own

## Indications for use
The RNK Telephonic Stethoscope Model TR-1 is intended for use to transmit auscultation sounds, whereby a clinician at one location can listen to the auscultation sounds of a patient at a different location with the signal carried over a data communications channel between the two locations.

Source page: https://510kreport.com/device/K034046
Methodology: https://510kreport.com/methodology