Medication infusion set
First Claim
1. An infusion set for subcutaneous administration of a fluid, comprising:
- a cannula housing defining a fluid passageway along a longitudinal axis thereof, the cannula housing including first and second guide rails and a cannula, said cannula being in fluid communication with the passageway and configured to be placed into the skin of a patient, wherein, along substantially the entire length thereof, each of said guide rails has an outer longitudinal surface with an arcuate profile; and
a connector adapted to be connected to the cannula housing, the connector comprising separate first and second guide arms, each said guide win being configured to mate with a respective one of the guide rails, and a locking aim having a barb,wherein the connector is symmetrical about its longitudinal axis such that it is reversible, 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, wherein the inner side of the first guide arm faces the inner side of the second guide arm, and wherein the cannula housing further defines a recess therein adjacent said fluid passageway, said recess being adapted to receive the barb when the connector is connected to the cannula housing.
1 Assignment
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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, for example, 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 connection guides. A connector connects the cannula housing to a fluid delivery system, such as an infusion pump. The connector includes a connecting needle and one or more guide arms that slide over the rail-like extensions to guide the needle into the self-sealing septum. The connector includes one or more locking arms, with barbs at the end, to connect with one or more recesses that are provided in the cannula housing.
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Citations
25 Claims
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1. An infusion set for subcutaneous administration of a fluid, comprising:
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a cannula housing defining a fluid passageway along a longitudinal axis thereof, the cannula housing including first and second guide rails and a cannula, said cannula being in fluid communication with the passageway and configured to be placed into the skin of a patient, wherein, along substantially the entire length thereof, each of said guide rails has an outer longitudinal surface with an arcuate profile; and a connector adapted to be connected to the cannula housing, the connector comprising separate first and second guide arms, each said guide win being configured to mate with a respective one of the guide rails, and a locking aim having a barb, wherein the connector is symmetrical about its longitudinal axis such that it is reversible, 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, wherein the inner side of the first guide arm faces the inner side of the second guide arm, and wherein the cannula housing further defines a recess therein adjacent said fluid passageway, said recess being adapted to receive the barb when the connector is connected to the cannula housing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A cannula housing for subcutaneous administration of a fluid, said housing comprising:
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a projection defining a passageway therethrough; a cannula in fluid communication with the passageway and configured to be placed into the skin of a patient; first and second guide rails formed on an external surface of the projection, wherein, along substantially the entire length thereof, each of said guide rails has an outer longitudinal surface with an arcuate profile that mates with a respective one of a plurality of separate guide arms of a connecting device, wherein the connecting device further includes a plurality of locking arms extending outwardly therefrom, each said locking arm having a barb associated therewith; and a plurality of recesses, each said recess being adapted to receive a respective one of said barbs. - View Dependent Claims (12, 13, 14, 15, 16)
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17. An infusion set for subcutaneous administration of a fluid, comprising:
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a cannula housing defining a fluid passageway along a longitudinal axis thereof, the cannula housing including first and second guide rails and a cannula, said cannula being in fluid communication with the passageway and configured to be placed into the skin of a patient, wherein, along substantially the entire length thereof, each of said guide rails has an outer longitudinal surface with an arcuate profile; and a connector adapted to be connected to the cannula housing, the connector comprising separate first and second guide arms, each said guide arm being configured to mate with a respective one of the guide rails, and a plurality of locking arms, each said locking aim having a barb associated therewith, 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, wherein the inner side of the first guide arm faces the inner side of the second guide arm, and wherein the cannula housing further defines a plurality of recesses therein adjacent said fluid passageway, each said recess being adapted to receive a respective one of said barbs so as to removably connect the connector to the cannula housing. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25)
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Specification