Fluid flow sensing apparatus for in vivo and industrial applications employing novel optical fiber pressure sensors
October 17, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2650487 3724503 Length controlled stabilized mode-lock Nd:YAG laser Method and apparatus for automatically reacquiring a predetermined output radiation frequency in a tunable laser system despite momentary perturbations of laser oscillation Flow meter Arterial pressure control system Quadrature fiber-optic interferometer matrix Fiber optic sensor with enhanced immunity to random environmental perturbations Pressure monitoring interconnect system Integrated optical transducers InventorAssigneeApplicationNo. 915113 filed on 10/03/1986US Classes:600/505, Sensing means inserted in blood vessel73/861.42, Using differential pressure73/861.52, With restriction356/478, Multiplexed sensor array356/479, Having a short coherence length source356/480Resonant cavityExaminersPrimary: Cohen, Lee S.Assistant: Shay, David M. Attorney, Agent or FirmForeign Patent References
International ClassA61B 005/02AbstractA fiber optical fiber fluid flow measuring device is provided for in vivo determination of blood flow in arteries. The device includes a fiber optical fluid differential pressure measuring device having at least one optical fiber sensor which optical fiber sensor is positioned in the blood flow passage in a restricted flow area. The fiber optical differential pressure fluid sensor is connected to a divided interferometer associated with an opto-electronic demodulator which has an output signal representing the differential pressure in the sensed area. The device also has utility in industrial applications.Other References
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