Optical device for the simultaneous detection of heart and respiratory movements
US4945916A · kind A · utility
56Cited by
4References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 14, 1987 |
| Grant date | Aug 7, 1990 |
| Priority date | — |
| Expiry date | Oct 14, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R23/008
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The device comprises a sensor with a mirror coupled to a diaphragm used to shift the mirror according to the patient's heart and thorax movements. A light generator illuminates the mirror. An electro-optical detector converts the intensity of the light rays reflected by the mirror into an electrical signal and a processing circuit generates output signals indicative of heart and respiratory movements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.