MEDICATION INFUSION SET
First Claim
1. An introducer for introducing a cannula for subcutaneous administration of fluid into a patient, comprising:
- separate first and second guide arms, wherein each of the separate first and second guide arms has opposing inner and outer longitudinal sides, wherein, for each guide arm, the outer longitudinal side is flat along substantially the entire length thereof and the inner longitudinal side has an arcuate profile along substantially the entire length thereof, and wherein the inner side of the first guide arm faces the inner side of the second guide arm; and
a longitudinally-extending needle that is parallel to said guide arms and is disposed laterally spaced apart from, and in-between, said first and second guide arms,wherein the needle has a distal tip that extends beyond respective distal ends of said first and second guide arms, and wherein the introducer is symmetrical about its longitudinal axis such that it is reversible.
1 Assignment
0 Petitions
Accused Products
Abstract
An infusion set is provided for use in delivering fluid through a cannula, which is housed on a cannula housing, to a selected subcutaneous infusion site on a patient. The fluid is generally a medication, e.g., insulin. The cannula is in fluid communication with a fluid passageway surrounded by a projection on the cannula housing that includes one or more rail-like extensions acting as guides. A connector connects the cannula housing to a fluid delivery system, e.g., an infusion pump. The connector includes a needle, one or more guide arms that slide over the rail-like extensions to guide the needle into the self-sealing septum, and one or more locking arms, with barbs at the end, to connect with corresponding recesses in the cannula housing. An introducer having one or more similar guide arms and locking arms, and a longer needle, may be used to insert the cannula into the patient.
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Citations
29 Claims
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1. An introducer for introducing a cannula for subcutaneous administration of fluid into a patient, comprising:
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separate first and second guide arms, wherein each of the separate first and second guide arms has opposing inner and outer longitudinal sides, wherein, for each guide arm, the outer longitudinal side is flat along substantially the entire length thereof and the inner longitudinal side has an arcuate profile along substantially the entire length thereof, and wherein the inner side of the first guide arm faces the inner side of the second guide arm; and a longitudinally-extending needle that is parallel to said guide arms and is disposed laterally spaced apart from, and in-between, said first and second guide arms, wherein the needle has a distal tip that extends beyond respective distal ends of said first and second guide arms, and wherein the introducer is symmetrical about its longitudinal axis such that it is reversible. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An introducer for introducing a cannula for subcutaneous administration of fluid into a patient, comprising:
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separate first and second guide arms, wherein each of the separate first and second guide arms has opposing inner and outer longitudinal sides, wherein, for each guide arm, the outer longitudinal side is flat along substantially the entire length thereof and the inner longitudinal side has an arcuate profile along substantially the entire length thereof, and wherein the inner side of the first guide arm faces the inner side of the second guide arm; a longitudinally-extending needle that is parallel to said guide arms and is disposed laterally spaced apart from, and in-between, said first and second guide arms, wherein the needle has a distal tip that extends beyond respective distal ends of said first and second guide arms; and a plurality of locking arms, wherein each said locking arm has a barb associated therewith, and wherein each said locking arm includes a grip. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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21. An introducer for introducing a cannula for subcutaneous administration of fluid into a patient, comprising:
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a first guide arm having opposing inner and outer longitudinal sides, wherein the outer longitudinal side is flat along substantially the entire length thereof and the inner longitudinal side has an arcuate profile along substantially the entire length thereof, and wherein the inner side of the first guide arm is configured to mate with a first guide rail of a cannula housing; a second guide arm separate from said first guide arm, said second guide arm having opposing inner and outer longitudinal sides, wherein the outer longitudinal side is flat along substantially the entire length thereof and the inner longitudinal side has an arcuate profile along substantially the entire length thereof, wherein the inner side of the second guide arm is configured to mate with a second guide rail of the cannula housing, and wherein the inner side of the first guide arm faces the inner side of the second guide arm; a longitudinally-extending needle that is parallel to said guide arms and has a distal tip that extends beyond respective distal ends of said first and second guide arms; and a locking arm having a barb, wherein the cannula housing releasably engages with the barb so as to detachably connect the introducer to the cannula housing. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29)
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Specification