Electronic sphygmomanometer
US4078551A · kind A · utility
Inventors
Key dates
| Filing date | Oct 16, 1975 |
| Grant date | Mar 14, 1978 |
| Priority date | — |
| Expiry date | Oct 16, 1995 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/02208
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A sphygmomanometer having an inflatable occluding cuff adapted to be applied to a patient. A pressure transducer is in fluid communication with the cuff so as to produce an electrical analog signal proportional to the actual pressure in the cuff and to superpose electrical pulses on the analog signal in response to pulsations in the patient's blood pressure during cardiac cycles. An analog-to-digital converter is coupled to the pressure transducer to produce a digital representation of the actual pressure then obtaining in the cuff. A pulse detector is coupled to the pressure transducer to detect the superposed electrical pulses. The digital representation produced by the analog-to-digital converter is displayed in response to the first-detected pulse; and the digital representation subsequently produced by the converter is displayed in response to the finally detected pulse, thereby resulting in the display of the patient's systolic and diastolic pressures, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.