Transducer for sensing body sounds
US6498854B1 · kind B1 · utility
21Cited by
7References
13Claims
0Family size
Inventor
Key dates
| Filing date | Oct 28, 1999 |
| Grant date | Dec 24, 2002 |
| Priority date | — |
| Expiry date | Oct 28, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2562/0204
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An acoustic-to-electrical transducer for sensing body sounds is disclosed. The transducer comprises a capacitive sensor, whereby a stethoscope diaphragm forms one plate of a capacitor, with the second plate of the capacitor being co-planar to the diaphragm. The capacitance of the two plates varies with the distance between them, said distance being modified by motion of the diaphragm in response to sound pressure. The sensor, circuitry, manufacturing methods and improvements are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.