Cassette for an infusion pump

Details Cassette for an infusion pump Cassette for an infusion pump

1998-01-22

1999-11-30

Yasko, John D.

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604 19, 604503, A61M 3700

Patent

active

059934204

ABSTRACT:
A cassette which is adapted to be insertable into and removable from an infusion pump. The cassette has a housing, a length of flexible tubing supported by the housing, and a first vertically movable member disposed in the housing. The first vertically movable member has a slot formed therein, and a portion of the flexible tubing is disposed within the slot. The first vertically movable member is movable between a clamped position in which the flexible tubing is clamped to prevent any substantial liquid flow therethrough and an unclamped position in which substantial liquid flow through the flexible tubing is enabled, and a spring is provided for biasing the first vertically movable member to the clamped position. The first vertically movable member may be designed so that the closure of a door of an infusion pump in which the cassette is inserted will cause the vertically movable member to be in the unclamped position to allow liquid flow through the flexible tubing. The cassette may have means for maintaining the first vertically movable member in the unclamped position, such as a retaining pin. The cassette has a second vertically movable member with a first surface and a second surface. The first surface has a portion which is arcuate in shape and adapted to substantially conform with a path of rotation defined by the rotary pump wheel of an infusion pump. The second surface of the second vertically movable member is disposed within the aperture formed in the upper surface of the housing so that the second vertically movable member may be vertically displaced due to physical contact with the second surface of the second vertically movable member.

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