Pinch valve mechanism for a parenteral infusion system

Details Pinch valve mechanism for a parenteral infusion system Pinch valve mechanism for a parenteral infusion system

1988-08-15

1989-11-07

Chambers, A. Michael

Valves and valve actuation

Tube compressors

Pivoting tube contacting element

251 66, 251 68, 604250, F16L 5514

Patent

active

048786462

ABSTRACT:
A pinch valve mechanism for a parenteral infusion system is provided which includes a spring-loaded pinch valve. The pinch valve is manually latched to its open position. A bobbin and cam mechanism includes a length of wire which contracts when a current is applied to it. The cam has two positions, one which holds the pinch valve in its open position and one which enables to pinch valve to close. When it is desired to automatically close the pinch valve, a current is applied to the wire. The contraction of the wire moves the cam from its valve open position to its alternate position, permitting the pinch valve to spring closed.

REFERENCES:
patent: 2181523 (1939-11-01), Shiels
patent: 3991972 (1976-11-01), Eaton
patent: 4637817 (1987-01-01), Archibald et al.
patent: 4645489 (1987-02-01), Krumme et al.
patent: 4673389 (1987-06-01), Archibald et al.

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