Subcutaneous infusion reservoir and pump system
First Claim
1. A subcutaneous infusion reservoir and pump system, comprising:
- means for receiving medication into said system by injection;
a reservoir fluidly connected to said receiving means in a manner permitting the subcutaneous transfer of medication from said receiving means to said reservoir;
a catheter for directing the medication to a specific location in a body removed from said reservoir, said catheter having a catheter inlet and being positionable within the body independently of the position of said reservoir;
means for subcutaneously conducting the medication from said reservoir to said catheter inlet; and
means for pumping and controlling the flow of medication from said reservoir to said catheter, said pumping and controlling means forming a portion of said conducting means and including normally closed valve means and a pump which is separated from said reservoir and said catheter by other portions of said conducting means;
wherein said normally closed valve means includes a body defining a fluid flow passageway therethrough, and a valve member positioned within the fluid flow passageway to occlude the valve means.
1 Assignment
0 Petitions
Accused Products
Abstract
A totally subcutaneously implantable infusion reservoir and pump system includes a variable capacity reservoir for receiving and storing fluid medication for delivery to a catheter which directs the medication to a specific infusion location in the body. In a preferred form of the invention, a control assembly is interposed between the reservoir and the catheter to facilitate and control the transfer of the medication from the reservoir to the catheter in a safe and efficient manner. This control assembly includes a normally closed valve and a pump, both of which are manually actuable by percutaneous pressure when subcutaneously implanted, and defines a portion of a fluid flow conduit between the reservoir and the catheter. Moreover, the control assembly is constructed to prevent the backflow of fluid from the catheter to the reservoir, as well as the unrestricted flow of medication through the control assembly when the normally closed valve is opened. This is accomplished by requiring at least two deliberate and sequential applications of selective pressure to the control assembly before any medication stored in the reservoir can be transferred to the catheter.
197 Citations
13 Claims
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1. A subcutaneous infusion reservoir and pump system, comprising:
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means for receiving medication into said system by injection; a reservoir fluidly connected to said receiving means in a manner permitting the subcutaneous transfer of medication from said receiving means to said reservoir; a catheter for directing the medication to a specific location in a body removed from said reservoir, said catheter having a catheter inlet and being positionable within the body independently of the position of said reservoir; means for subcutaneously conducting the medication from said reservoir to said catheter inlet; and means for pumping and controlling the flow of medication from said reservoir to said catheter, said pumping and controlling means forming a portion of said conducting means and including normally closed valve means and a pump which is separated from said reservoir and said catheter by other portions of said conducting means; wherein said normally closed valve means includes a body defining a fluid flow passageway therethrough, and a valve member positioned within the fluid flow passageway to occlude the valve means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification