Shut-off valve for a liquid flow line or infusion device

Details Shut-off valve for a liquid flow line or infusion device Shut-off valve for a liquid flow line or infusion device

1989-03-28

1990-10-02

Fox, John C.

Valves and valve actuation

Tube compressors

Perpendicularly reciprocating tube contacting element

604250, F16K 704

Patent

active

049602594

ABSTRACT:
A shut-off valve for a fluid flow or an infusion instrument is described. A sleeve-form casing (2) with a lateral opening (4) between its ends is provided. An elastic tube piece (7) lies within casing (2) to allow fluid flow therethrough. A pressure body (14) is movable radially within the lateral opening (4) to selectively compress or not compress the tube piece (7) so as to occlude or open fluid flow through the tube piece (7). For simplification of manufacture and for quick operation of such a shut-off valve, especially without painful or injurious activities in operation, a tubular guide sleeve (8) is provided and surrounds the lateral opening (4) of the casing. Sleeve (8) is arranged to laterally project from the casing (2) and includes at least one pair of blocking stops (10, 10', 11 11'). The pressure body (14) has a plug shape. On the end of the pressure body (14), facing away from the tube piece (7), there is fastened a cap (16) with an elastic mantle (12) and snap ring (18) depending from the cap. The snap ring at least partially overlaps the guide sleeve (8).

REFERENCES:
patent: 4146018 (1979-03-01), Aldridge et al.
patent: 4440378 (1984-04-01), Sullivan
patent: 4624663 (1986-11-01), Danby et al.

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