Flow control mechanism for a plasmaspheresis assembly or the like
First Claim
1. A flow control device for a flexible conduit comprisinga first member,means for releasably securing a length of flexible conduit on said first member,a second member including a housing and a platen movably mounted on said housing,means for mounting said second member housing in an operative position on said first member, in which position the secured conduit is disposed between said first member and said movable platen of said second member, andmeans on said movable platen operative, in response to displacement of said movable platen when said second member housing is in said operative position, for selectively pinching close the secured conduit between said movable platen and said first member.
1 Assignment
0 Petitions
Accused Products
Abstract
A flow control device includes a first member and a second member which has a movable portion. The first member accommodates the attachment of a length of flexible conduit. The second member can be positioned on the first member to sandwich the secured conduit between the first member and the movable portion of the second member. When in this position, displacement of the movable portion serves to selectively pinch close the secured conduit between the movable portion and the first member. Fluid flow through the conduit can thus be conveniently controlled. The device is extremely adaptable and can be readily incorporated into virtually any fluid system which requires complex, repetitive valving functions, such as those associated with a plasmapheresis assembly.
142 Citations
38 Claims
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1. A flow control device for a flexible conduit comprising
a first member, means for releasably securing a length of flexible conduit on said first member, a second member including a housing and a platen movably mounted on said housing, means for mounting said second member housing in an operative position on said first member, in which position the secured conduit is disposed between said first member and said movable platen of said second member, and means on said movable platen operative, in response to displacement of said movable platen when said second member housing is in said operative position, for selectively pinching close the secured conduit between said movable platen and said first member.
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18. A flow control assembly for flexible fluid conduits comprising
first means attachable to two or more flexible fluid conduits and operative for establishing flow communication between the attached conduits, and a flow control device comprising a first member, means for releasably securing on said first member said first means and the conduits attached thereto, a second member including a movable portion, means for mounting said second member on said first member, in which position the conduits which are attached to said first means are disposed between said first means and said movable portion, and means on said movable portion operative, in response to movement of said movable portion when said second member is in said operative position, for selectively pinching close at least one of the attached conduits between said movable portion and said first member.
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29. A plasmapheresis assembly comprising
a primary conduit including, at one end thereof, a phlebotomy needle, first and second blood collection containers, first and second auxiliary conduits respectively attached in flow communication with said collection containers, a manifold interconnecting said primary conduit with said first and second auxiliary conduits, and a flow control device comprising a first member, means for releasably securing said manifold and a portion of said attached conduits on said first member, a second member including a movable portion, and means for mounting said second member in an operative position on said first member, in which position said secured portions of said primary and said auxiliary conduits are disposed between said first means and said movable portion, and means on said movable portion operative, in response to movement of said movable portion when said second member is in said operative position, for individually and selectively pinching close each of said auxiliary conduits between said first means and said movable member.
Specification