초록 ▼

A digital watch is employed to measure systolic and diastolic blood pressure as well as heart rate. The band of the watch supports a piezoelectric transducer that is held in contact with the wrist adjacent to the radial artery when a switch on the band is activated. The watch contains electronic cir

A digital watch is employed to measure systolic and diastolic blood pressure as well as heart rate. The band of the watch supports a piezoelectric transducer that is held in contact with the wrist adjacent to the radial artery when a switch on the band is activated. The watch contains electronic circuitry that derives a binary representation of the maximum or systolic pressure and the minimum or diastolic pressure that is generated at the artery by blood pressure pulses which can be displayed. Electronic circuitry is also provided to generate and address corresponding to the time interval T between successive measured heart beats. The address is used to access a memory device that contains a stored list of heart rates in cycles per minute. The contents of the memory at the address T corresponds to the reciprocal of T, in units of pulses per minute and a representation of the contents of the memory can be displayed.

대표청구항 ▼

Apparatus for measuring blood pressure, comprising: transducer means for generating an electrical signal having an amplitude corresponding to the magnitude of applied pressure; means for pressing at least a portion of said transducer means adjacent an area of a body where blood pressure pulses may b

Apparatus for measuring blood pressure, comprising: transducer means for generating an electrical signal having an amplitude corresponding to the magnitude of applied pressure; means for pressing at least a portion of said transducer means adjacent an area of a body where blood pressure pulses may be detected, the transducer means generating electrical pressure pulses corresponding to the detected blood pressure pulses, each of the electrical pressure pulses defining a maximum voltage over a systolic interval and a minimum voltage over a diastolic interval; analog to digital converter means for sampling the voltage amplitude at a plurality of points on each electrical pressure pulse and for generating a coded data word for each sampled voltage, the data word defining the pressure corresponding to the sampled voltage amplitude; systolic comparator means for comparing said coded data words and storing the data word defining the highest pressure; diastolic comparator means for comparing said coded data words and storing the data word defining the lowest pressure; and pressure display means for displaying a representation of the stored data word of the systolic comparator and of the diastolic comparator.