Pressure-pulse-wave detecting apparatus
US4976268A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 21, 1989 |
| Grant date | Dec 11, 1990 |
| Priority date | — |
| Expiry date | Jun 21, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/02233
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus for detecting pressure pulse wave, including a main body having a pressing surface which is pressed against the body surface of a subject, and a plurality of through holes formed therethrough and opening in the pressing surface; a plate member secured to the pressing surface of the main body such that the plate member covers the openings of the through holes, the pressing plate having flexibility and including a plurality of displaceable portions each of which is aligned with the opening of a corresponding through hole; a plurality of optical fibers, one of opposite ends of each optical fiber being fitted in a corresponding through hole of the main body, such that an end face of the one end is opposed to a corresponding displaceable portion of the plate member at a predetermined distance therefrom; and a plurality of signal generating devices each of which is connected to the other of the opposite ends of a corresponding optical fiber, each signal generating device detecting the pressure pulse wave transmitted to a corresponding displaceable portion of the plate member, based on minute displacement of the corresponding displaceable portion which is optically detected t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.