Pulsimeter

Details Pulsimeter Pulsimeter

1976-06-03

1978-10-17

Michell, Robert W.

Surgery

Truss

Perineal

A61B 502

Patent

active

041202961

ABSTRACT:
A pulsimeter for indicating the average heart beat rate by counting the number of beats occurring during a predetermined period of time, comprising a pulse sensor adapted for flat application against a part of a human body, and an electronic counter and display preferably arranged for being worn on a person's wrist. The electronic counter and display comprise an input processing circuit which receives electrical pulses at the rate of the heart beats from the pulse sensor and which supplies to a counting circuit an electrical signal having n pulses for one heart beat, n being an integer factor of 60 greater than 1 and less than 60. The counting circuit repeatedly counts the pulses from the input processing circuit during the predetermined period of time, the duration of which is 60
seconds. The counting circuit is reset at the end of each such period of time, just after having transmitted its end counting value to a memory circuit which supplies this value to a display during the whole next period of time. A further circuit is provided for preventing more than n pulses from being delivered to the counting circuit during an interval between two consecutive heart beats. The displayed value is renewed every 60
seconds, but its accuracy is the same as that which would be obtained by counting the heart beats every 60 seconds.

REFERENCES:
patent: 3742937 (1973-07-01), Manuel et al.
patent: 3807388 (1974-04-01), Orr et al.
patent: 3977393 (1976-08-01), Kovacic
patent: 3978849 (1976-09-01), Geneen
patent: 4022192 (1977-05-01), Laukien

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