Pulse wave detecting apparatus
US5131400A · kind A · utility
47Cited by
11References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 31, 1990 |
| Grant date | Jul 21, 1992 |
| Priority date | — |
| Expiry date | May 31, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/021
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A pulse wave detecting apparatus for detecting a pulse wave produced from an arterial vessel in a body portion of a subject, including a semiconductor substrate having a press surface at which the semiconductor substrate is adapted to be pressed against the body portion, the semiconductor substrate having a recess in a surface thereof opposite to the press surface and thereby including a diaphragm portion having a thin wall, and a pressure sensing device provided on the diaphragm portion, for converting a pressure transmitted from the arterial vessel to the diaphragm portion, into an electric signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.