Pressure relief valve for blood pressure measuring instrument
US4200259A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 25, 1978 |
| Grant date | Apr 29, 1980 |
| Priority date | — |
| Expiry date | May 25, 1998 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/0235
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A pressure relief valve for a blood pressure measuring instrument which is provided with a discharge mechanism for selectively discharging a small or large amount of compressed air. The discharge mechanism of simple structure is constituted from a small number of members including a valve member, a spring, an adjustment screw plug and a push button. A cuff pressure is automatically reduced at the predetermined reducing rate by rotating the adjustment screw plug during the measurement of blood pressure. Pushing of the push button also makes it possible to discharge at once the remaining cuff pressure after the measurement of blood pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.