Finger blood pressure measurement system
US5025793A · kind A · utility
11Cited by
16References
14Claims
0Family size
Inventors
Key dates
| Filing date | Sep 29, 1988 |
| Grant date | Jun 25, 1991 |
| Priority date | — |
| Expiry date | Sep 29, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/02241
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A system for blood pressure measurement ascertains blood pressure indirectly by the oscillometric method at the user's index finger. Finger measurement allows the system to be smaller and easier to use than systems using conventional upper arm measurement. By using the oscillometric technique, the system according to the invention needs no microphone and so avoids the problems associated with microphone positioning. The system employs a rigid finger cuff with an inflatable inner bladder. The system extracts pulse signals transmitted via air pressure while simultaneously providing accurate pressure control.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.