Stethoscope chestpiece
US4239089A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 9, 1979 |
| Grant date | Dec 16, 1980 |
| Priority date | — |
| Expiry date | Aug 9, 1999 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B7/026
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A two-microphone stethoscope chestpiece is dislcosed wherein the locking mechanism for securing the shaft within the body of the chestpiece against axial movement and the indexing mechanism for aligning the shaft with the selected microphone are combined into a single spring having a C-shaped portion and a leg extending axially from one end thereof. The spring is positioned partially within grooves in the shaft and partially within corresponding slots in chestpiece body. Upon rotation of the shaft, the leg portion of the spring clicks into one of two opposed slots in the chestpiece body and secures the shaft in proper alignment with the selected microphone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.