Fiber optic catheter system with fluorometric sensor and integra

Details Fiber optic catheter system with fluorometric sensor and integra Fiber optic catheter system with fluorometric sensor and integra

1986-10-10

1991-05-07

Hindenburg, Max

Surgery

Truss

Pad

128665, 422 52, 436172, A61B 500

Patent

active

050128094

ABSTRACT:
A sensor for measuring fluid concentrations or the temperature of body. A fiber-optic catheter having a fluorometric sensor attached at a distal end is excited by a light source outside the body. The sensor fluoresces with an intensity or with a lifetime related to the concentration of the fluid or the temperature. The catheter has one light pipe for exciting the sensor and a second light pipe for generating a reference signal to calibrate signals from the fluorometric sensor. One embodiment has two sensors that fluoresce with different intensities and lifetimes to simultaneously give information about both the temperature and the fluid concentration.

REFERENCES:
patent: Re31879 (1985-05-01), Lubbers et al.
patent: 4178917 (1979-12-01), Shapiro
patent: 4476870 (1984-10-01), Peterson et al.
patent: 4487206 (1984-12-01), Aagand
patent: 4557900 (1985-12-01), Heitzmann
patent: 4675529 (1987-06-01), Kushida
patent: 4752115 (1988-06-01), Murray et al.
patent: 4810655 (1989-03-01), Khalil et al.
Kahil et al., PCT No. WO87/00023, Published Jan. 1987, filed 27 Jun., 1986, Priority in U.S. to Jul. 3, 1985.

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