Miniaturized sensor for physiological pressure measurements

Details Miniaturized sensor for physiological pressure measurements Miniaturized sensor for physiological pressure measurements

1990-01-31

1991-05-28

Smith, Ruth S.

Surgery

Truss

Pad

128675, 128748, 73705, A61B 502

Patent

active

050185292

ABSTRACT:
Miniaturized sensor for physiological pressure measurements in situ, including an elastic sleeve (1) with a diaphragm portion through which the hydrostatic pressure is transmitted as a force acting on a light conductor (2) which is supplied with light from an external source and fixed to a support body (3) such that the hydrostatic pressure variations cause elastic, relative positional variations between the end surface (4) of the light conductor (2) and a light-reflecting surface (5) on the support body (3), which in turn gives rise to variations in reflected light intensity transmitted back through the light conductor (2), to serve as a pressure signal.

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IEEE Transactions on Bio-Medical Engineering, vol. BME-17, No. 3, pp. 207-219, Jul. 3, 1970, "Miniaturized Pressure Transducer Intended for Intravascular Use"--Lars H. Lindstrom.
Digest of the 11th International Conference on Medical and Biological Engineering--1976--Ottawa, "Development and Evaluatoin of Fiber Optic Pressure Catheter" by Saito and Masumoto, pp. 690-691.
30th AEMB--Los Angeles, Nov. 5-9, 1977, "An Improved Fiberoptic Catheter for Intravascular Pressure and Sound Measurements", p. 292 by French and Gerhard.

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