A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
326/13.5
A61B 5/02 (2006.01) A61B 5/022 (2006.01) A61B 5/024 (2006.01) A61B 5/22 (2006.01)
Patent
CA 1311016
ABSTRACT A patient inserts a finger into a cup con- taining a piezoelectric transducing film for providing a pulse signal and an inflatable sleeve with the piezoelec- tric film in contact with the finger. The inflatable cuff is inflated to a pressure corresponding to a prede- termined pressure within the range of substantially the diastolic pressure of the patient and half the diastolic pressure. The patient blows into a closed hose having a small opening and a pressure transducer that provides a signal to a computer representative of the pressure in the hose that displays a cursor representative of the pressure in the hose on the computer display tube along with limit lines representing 30 and 50 mm of mercury pressure. The pulse signal is also coupled to the com- puter. The patient blows into the hose while maintaining the cursor between the limit lines for about 20 seconds and then stops blowing. The computer then displays or prints out signals representative of the pulse signal amplitude and rate, its derivative and integral, before, during and after the heart straining maneuver effected by blowing into the hose.
502082
Mcintyre Kevin M.
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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