Digital cuff apparatus for determining blood pressure without us

Details Digital cuff apparatus for determining blood pressure without us Digital cuff apparatus for determining blood pressure without us

1980-01-02

1982-05-25

Kamm, William E.

Surgery

Truss

Pad

A61B 502

Patent

active

043311555

ABSTRACT:
A cuff having a casing and an inflatable diaphragm is slipped over a portion of the body of the user, preferably a thumb or finger. The diaphragm is connected by a conduit to a pressure source and to a manometer. A preferred pressure source is as a cylinder similar to that of a syringe. A plunger in the syringe inflates the diaphragm. The pressure in the cuff is slowly increased until the subject first notices a slight localized throbbing sensation within the artery inside the cuff, the pressure corresponding to diastolic blood pressure, and this pressure is read. Use of a transducer or even a stethoscope is unnecessary. Further, it has been found that if the cuff is properly designed, pressure corresponds very closely to diastolic blood pressure measured at the brachial artery with a standard arm cuff using a stethoscope. For other cuff structures the pressure in the cuff may be calibrated to that in an arm by using these subjective sensations. The pressure is increased further until the subject senses the disappearance of the localized throbbing within the artery, a condition which corresponds to systolic blood pressure, such pressure again being noted.

REFERENCES:
patent: 598343 (1898-02-01), Hill et al.
patent: 2753863 (1956-07-01), Bailey
patent: 3416516 (1968-12-01), Cohen et al.
patent: 3585987 (1971-06-01), Svensson
patent: 4202347 (1980-05-01), Saeks

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