Blood pressure measuring apparatus
US5730139A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 13, 1996 |
| Grant date | Mar 24, 1998 |
| Priority date | — |
| Expiry date | Sep 13, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/0225
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A blood pressure measuring apparatus comprises an inflatable cuff which is adapted to be wound around a body portion of a living subject, an air pump which supplies a pressurized air to the cuff to inflate the cuff and thereby increase an air pressure in the cuff, to press a body portion of the subject, a pump-output-power control device which controls an output power of the air pump to increase an air pressure in the pump to a predetermined target pressure value, a pressure sensor that detects the pressure of the cuff, first-pump-output setting means for setting a predetermined first pump output power, a timer which measures a basic time period needed to increase the pressure in the cuff, second-pump-output power determining means for determining a second pump output power corresponding to a predetermined pressure-increase rate of the cuff, a cuff pressure decreasing device that decreases the pressure of the cuff, and a measuring device which measures at least one blood pressure value of the living subject while the pressure of the cuff is decreased from a target pressure value by the cuff pressure decreasing device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.