Leak detector

Details Leak detector Leak detector

1989-03-14

1991-09-03

Cohen, Lee S.

Surgery

Cardiac augmentation

600 18, 604 67, 604 96, 606192, 606194, A61B 1900

Patent

active

050450514

ABSTRACT:
A system for detecting leakage in a device having a fluid-driven membrane inserted in the body, for example, a balloon pump, includes a fluid drive circuit with a moisture remover having a capacity just sufficient to remove water vapor entering the circuit due to intrinsic permeability of the membrane. An in-line humidity sensor responds quickly to an increase in vapor pressure, indicating a leak, and activates a shut-down circuit to prevent leakage of the drive fluid into the body. The system is employed in a balloon pump driven by a pulsating air source.

REFERENCES:
patent: 3720199 (1973-03-01), Rishton et al.
patent: 4162543 (1979-07-01), Shumakov et al.
patent: 4465063 (1984-08-01), Nielsen et al.
patent: 4846831 (1989-07-01), Skillin
patent: 4861330 (1987-03-01), Voss

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