Surgery – Truss – Pad
Patent
1981-12-24
1984-09-25
Howell, Kyle L.
Surgery
Truss
Pad
A61B 502
Patent
active
044730802
ABSTRACT:
An instrument for measuring blood pressure by sensing the Korotkoff sounds which prevail only between the systolic and diastolic point. The instrument used is essentially a hand-held device. The instrument has a pressure-sensitive element made up of a flexible material containing fluid and crystal transducer supported on the flexible material which responds to the Korotkoff sounds. The sensor is made in a unique geometrical structure shaped to fit between bones and tendons over an artery. The crystal operates through an amplifier, a high pass filter and low pass filter through a comparator to a one shot enabling means connected to a panel meter. The pressure on the fluid in the sensed by a pressure sensor that is in contact with the fluid in the sensor which is connected to the panel digital meter. The digital display shows the pressure exerted on the artery at each Korotkoff sound. A LED shows that pulses are present. The pressure sensed by the pressure transducer at the time the sounds appear at the systolic point and again at the time they disappear at the diastolic point.
REFERENCES:
patent: 2753863 (1956-07-01), Bailey
patent: 3704708 (1972-12-01), Iberall
patent: 3811429 (1974-05-01), Fletcher et al.
patent: 4068654 (1978-01-01), Paavola et al.
patent: 4188955 (1980-02-01), Sakamoto et al.
patent: 4295471 (1981-10-01), Kaspari
Fearnot Neal
Paavola Oiva A.
Howell Kyle L.
Jaworski F. J.
Lovercheck Charles L.
Lovercheck Dale R.
Lovercheck Wayne L.
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