Method and apparatus for monitoring blood pressure
US4928701A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 21, 1989 |
| Grant date | May 29, 1990 |
| Priority date | — |
| Expiry date | Feb 21, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/0225
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and apparatus for monitoring blood pressure of a subject, the method including the steps of continuously detecting pulse wave which is produced from an artery synchronously with heartbeat of the subject; the pulse wave consisting of a plurality of pulses, repetitively measuring blood pressure of the subject, each of the repetitive blood pressure measurements being effected by inflating a cuff set on a body portion and deflating the cuff; repetitively determining a relationship between blood pressure and magnitude of pulse wave, based on each of the repetitively measured blood pressures and magnitude of at least one pulse of the pulse wave which pulse is detected during a predetermined time length including a first time length immediately before beginning of the inflation of the inflatable cuff for a corresponding one of the repetitive blood pressure measurements, and a second time length following the first time length; replacing each of the repetitively determined relationships, with another relationship determined following the each of the repetitively determined relationships; and continuously determining blood pressure of the subject based on magnitude of each of the p…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.