Instrumentation for monitoring blood circulation

Details Instrumentation for monitoring blood circulation Instrumentation for monitoring blood circulation

1975-10-08

1976-11-23

Howell, Kyle L.

Surgery

Truss

Perineal

128 205T, 128 205V, A61B 502

Patent

active

039930475

ABSTRACT:
Compact monitor apparatus for monitoring a blood circulation condition comprises a radiation source and a radiation sensor mounted in spaced, side by side relation. The source and sensor are placed in contact with the skin and the pulsating blood flow immediately beneath the skin significantly changes the transmission of radiation as a function of the amount of blood flow in that region. Filter circuitry is connected to the sensor and tuned to attenuate artifact signals and enhance the pulsating blood signals. An output indicator responds to the enhanced pulsating blood signals to produce an indication of the monitored blood circulation condition.

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patent: 3835837 (1974-09-01), Peek
patent: 3841314 (1974-10-01), Page
patent: 3881481 (1975-05-01), Heule et al.

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