SYSTEM, METHOD, AND APPARATUS FOR UTILIZING A PUMPING CASSETTE
1 Assignment
0 Petitions
Accused Products
Abstract
The present invention involves, in some embodiments, mechanisms and methods of occluding collapsible tubing with an occluder to prevent fluid flow therethrough. In some embodiments, a tube occluding mechanism is disclosed that includes a bendable occluding member for creating a force that can be applied to a collapsible tube to occlude the tube. In some embodiments, the collapsible tube can be an inlet/outlet tube on a removable pumping cartridge that is coupled to a reusable pump drive component when the system is in operation. In such embodiments, the occluding mechanism can be attached to the reusable component and can be used to block fluid flow to and from the pumping cartridge. In some embodiments, the occluding member can comprises a spring plate which can create a force to occlude tubing when in a relaxed, unbent configuration, and which can be bent to unocclude the tubing. In some preferred embodiments, in a default configuration of the tube occluder mechanism (when no external force is applied to the occluding member) the tubes are occluded, so that the tube occluder mechanism provides a fail-safe configuration preventing fluid flow to and from a pumping cartridge to which the tubes can be connected.
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Citations
11 Claims
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1. (canceled)
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2. A pump chamber comprising:
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a movable membrane opposite a rigid inner chamber wall, the membrane configured to move a fluid out of the pump chamber through an outlet of the pump chamber as the membrane moves toward the rigid inner chamber wall from a first position to a second fully extended position, wherein when in the second fully extended position, a portion of the membrane makes contact with a portion of the rigid inner chamber wall so that a residual volume of the fluid remains within the pump chamber. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11)
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3. A pump chamber comprising:
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a movable membrane opposite a rigid inner chamber wall, the membrane configured to move a fluid out of the pump chamber through an outlet of the pump chamber as the membrane moves toward the rigid inner chamber wall from a first position to a second fully extended position, wherein when in the second fully extended position, a first portion of the membrane makes contact with one or more surface features of the rigid inner chamber wall, while a second portion of the membrane is prevented from contacting a portion of the inner chamber wall, leaving a residual volume of the fluid within the pump chamber.
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Specification