Transcutaneous infusion apparatus and methods of manufacture and use
First Claim
Patent Images
1. A transcutaneous infusion apparatus, comprising:
- an implantable infusate injection port including a housing forming a reservoir with a self-sealing septum on an access side and a solid surface on a side opposite, said port having an outlet tube, said port being adapted for implantation in a human or animal body with the septum located under the skin and the outlet tube leading to an infusion site in the body;
a needle having a tip and a longitudinal shaft;
catheter means for accessing the reservoir of said port, said catheter means fitting about a portion of said shaft of said needle while allowing said tip to be exposed; and
means for holding said needle and said catheter means in order to insert said needle and said catheter means through said septum, said holding means including means for pushing said needle and said catheter means during insertion until said needle contacts said solid surface of said port, said pushing means including means for yielding with respect to said needle to allow said catheter means to more closely approach said solid surface, said yielding means comprising a yieldable material which is generally rigid at force levels sufficient to introduce said needle and said catheter means through said septum but which will yield and collapse when greater force is applied thereto, said needle and said holding means being separable from said inserted catheter means.
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Abstract
Apparatus for accessing the circulatory system of a person or animal includes a port and a device for accessing the port. The access device has a solid introducer with a catheter received thereabout. The introducer and catheter are covered by telescoping containers which expose the insertion ends of the introducer and catheter only at the time of insertion. The catheter is separable from the access device after insertion.
120 Citations
33 Claims
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1. A transcutaneous infusion apparatus, comprising:
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an implantable infusate injection port including a housing forming a reservoir with a self-sealing septum on an access side and a solid surface on a side opposite, said port having an outlet tube, said port being adapted for implantation in a human or animal body with the septum located under the skin and the outlet tube leading to an infusion site in the body; a needle having a tip and a longitudinal shaft; catheter means for accessing the reservoir of said port, said catheter means fitting about a portion of said shaft of said needle while allowing said tip to be exposed; and means for holding said needle and said catheter means in order to insert said needle and said catheter means through said septum, said holding means including means for pushing said needle and said catheter means during insertion until said needle contacts said solid surface of said port, said pushing means including means for yielding with respect to said needle to allow said catheter means to more closely approach said solid surface, said yielding means comprising a yieldable material which is generally rigid at force levels sufficient to introduce said needle and said catheter means through said septum but which will yield and collapse when greater force is applied thereto, said needle and said holding means being separable from said inserted catheter means. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A catheter introducer assembly comprising:
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a solid needle having a proximal end and a distal tip; a catheter having a proximal end and a distal tip, the catheter being slidably received over the needle; a first housing member, the proximal end of the needle being housed by and affixed to the first housing member; a second housing member receivable over the distal tips of the needle and catheter, the first and second housing members being telescopably slidable between a first extended position whereat the distal tips of the needle and the catheter are enclosed within the second housing member and a second collapsed position whereat the distal tips of the needle and catheter are exposed, the first and second housing members having a combined length which is greater in the extended position than in the collapsed position. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A catheter introducer assembly comprising:
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a solid needle having a proximal end and a distal tip; a catheter comprising a first tube of less flexible material including a catheter distal tip and a second tube of more flexible material including a catheter proximal end, said first and second tubes joined by a connector member, the catheter being slidably received over the needle; a first housing member, the proximal end of the needle being housed by the first housing member; a second housing member receivable over the distal tips of the needle and catheter and including stabilizing means for stabilizing the catheter and needle prior to and during insertion into a patient, the first and second housing members being telescopably slidable between a first extended position whereat the distal tips of the needle and catheter are enclosed within the second housing member and a second collapsed position whereat the distal tips of the needle and catheter are exposed. - View Dependent Claims (27, 28, 29, 30, 31)
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32. A catheter introducer assembly comprising:
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a solid needle having a proximal end and a distal tip; a catheter having a proximal end and a distal tip, the catheter being slidably received over the needle; a first sleeve member having a distal end portion; and a second sleeve member having a distal end and a proximal end, the proximal end adapted to be telescopically slidable with respect to the distal end portion of the first sleeve member, the sleeve members having a first extended position with respect to one another wherein the sleeve members surround the needle and the catheter, the sleeve members having a collapsed position with respect to one another wherein the needle and the catheter extend outwardly from the distal end of the second sleeve, and the sleeves having a second extended position with respect to one another wherein the sleeves surround the needle after retraction of the needle from the catheter after introduction of the catheter, the first and second sleeve members having a combined length which is greater in the extended position than in the collapsed position. - View Dependent Claims (33)
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Specification