Liquid flow sensing apparatus

Details Liquid flow sensing apparatus Liquid flow sensing apparatus

1980-03-06

1982-01-12

Mancene, Gene

Surgery

Respiratory method or device

Ozone or ion generation

73728, 200 81R, 200 819R, 417 45, 361180, 338 32R, A61M 500, G01L 910, H01H 3540, F04B 4906

Patent

active

043099939

ABSTRACT:
Liquid flow sensing apparatus which in the illustrative embodiment is used to sense an occluded vein (cessation of blood flow). A flexible pressure pillow is connected in the blood flow line and is inserted into a housing in contact with a metallic leaf spring. The position of the leaf spring is adjusted relative to an eddy current proximity sensor so that the sensing apparatus is calibrated to a no-alarm position during proper blood flow. If blood flow ceases, the flexible pressure pillow contracts thereby moving the leaf spring away from the eddy current proximity sensor and an alarm condition is thereby detected.

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patent: 4137915 (1979-02-01), Kamen
patent: 4227171 (1980-10-01), Masuda et al.

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