Optical fiber pressure transducer

Details Optical fiber pressure transducer Optical fiber pressure transducer

1986-07-01

1987-11-03

Howell, Kyle L.

Surgery

Truss

Pad

128675, 128748, 73705, A61B 502

Patent

active

047037571

ABSTRACT:
A catheter houses an elongated flexible fiber optic member having a light transmitting core for transmitting light received at its proximal end to its distal end at which the light is reflected back to the proximal end. The fiber optic member is coaxially surrounded by cladding throughout essentially all of its length, except for an uncladded portion of its length adjacent the distal end. A pressure transducer is located adjacent the distal end alongside the uncladded core portion. The transducer is constructed of light absorbing material having a portion thereof making variable surface area contact with the uncladded core portion in dependence upon transversely applied pressure forces. The variations in surface area contact cause changes in the light refraction characteristics. This modulates the intensity of light passing through the core proximate thereto.

REFERENCES:
patent: 3051003 (1962-08-01), Witt
patent: 3056297 (1962-10-01), Duke
patent: 3267932 (1966-08-01), Vallieve
patent: 3920312 (1975-11-01), Siegmund
patent: 4487206 (1984-12-01), Aagard

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