Optical fiber pressure transducer

Details Optical fiber pressure transducer Optical fiber pressure transducer

1983-11-21

1986-09-16

Howell, Kyle L.

Surgery

Truss

Pad

128675, 128748, 73705, A61B 502

Patent

active

046116001

ABSTRACT:
The optical blood pressure catheter includes an elongated flexible light conductor for transmitting light received at its proximal end to its distal end and for transmitting light received at the distal end back to the proximal end. A pressure transducer is located adjacent the distal end and includes a light reflector which is spaced along a light path from the distal end and is fixed in position relative thereto so as to receive and reflect light emitted from the distal end back into the distal end. A pressure responsive membrane is located intermediate the distal end and the reflector and is movable transversely of the light path in dependence upon the pressure exerted on the exterior surface of the membrane. A shutter carried by the membrane moves therewith transversely of the light path for blocking light along the light path so that the light received by the distal end is attenuated in dependence upon the pressure exerted on the membrane.

REFERENCES:
patent: 3123066 (1964-03-01), Brumley
patent: 3159750 (1964-12-01), Kazan
patent: 3249105 (1966-05-01), Polanyi
patent: 3273447 (1966-09-01), Frank
patent: 3686958 (1972-08-01), Porter et al.
Matsumoto et al, J. Med. Eng. and Tech., vol. 2, No. 5, Sep. 1978, pp. 239-242.

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