Restriction of pressure in a cuff for use in sphyghmomanometry
US5447160A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 9, 1991 |
| Grant date | Sep 5, 1995 |
| Priority date | — |
| Expiry date | Jul 9, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/02233
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus and a method for restricting to a proper level the pressure increase in cuffs (7) for use in non-invasive automatic sphyghmomanometry and connectable with a common monitor (1). The apparatus comprises a pump (2) and a cuff (7) in communication therewith that can be replaced with another type of cuff. The pressure of the cuff is increased by means of pump" (2), a valve (8) for releasing the pressure out of cuff (7), a pressure-sensing element (12) for monitoring the development of a cuff pressure, an AC/DC signal separator (13) for separating an AC component from a DC component in a signal received from the pressure-sensing element, and a control element (16) for further processing the information received from the signal separator and for controlling the operation of valve (8). The different cuff types require separate pressure-restricting elements (5 and/or 9), whose maximum accepted set pressures differ from each other and which automatically drop the cuff pressure as the pressure exceeds a set level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.