Surgery – Truss – Pad
Patent
1989-02-21
1990-05-29
Sykes, Angela D.
Surgery
Truss
Pad
128681, A61B 502
Patent
active
049287010
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 pulses of the continuously detected pulse wave according to a currently effective one of the repetitively determined and replaced relationships.
REFERENCES:
patent: 4562843 (1986-01-01), Djordjevich et al.
patent: 4669485 (1987-06-01), Russell
Harada Chikao
Niwa Minoru
Colin Electronics Co., Ltd.
Sykes Angela D.
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