Device for use in detecting occlusion in an infusion system

Details Device for use in detecting occlusion in an infusion system Device for use in detecting occlusion in an infusion system

1979-03-26

1981-01-13

Michell, Robert W.

Surgery

Respiratory method or device

Ozone or ion generation

340626, 340611, 73749, A61M 500

Patent

active

042443652

ABSTRACT:
An overpressure device is disclosed for use in a liquid infusion set for the purpose of detecting excessive pressures which may occur during infusion. The device comprises a tubular member with an inlet and an outlet, a closed pressure chamber and a bridging portion containing a small bore passage which connects the pressure chamber with the tubular member. In a preferred form, the interconnecting passage takes a tortuous path. An optical sensor positioned on the pressure chamber will detect the presence of liquid at a predetermined position in the chamber, when the liquid rises as a result of excessive pressure in the set, and respond by stopping the flow of liquid in the set.

REFERENCES:
patent: 3225340 (1965-12-01), Kochey, Jr.
patent: 3469574 (1969-09-01), Durkan
patent: 3731679 (1973-05-01), Wilhelmson
patent: 4191184 (1980-03-01), Carlisle
Engineering Fluid Mechanics, Roberson et al., Houghton Mifflin Co., Boston, Mass. 1975, p. 21.

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