Injector device for placing a subcutaneous infusion set
First Claim
Patent Images
1. An injector device (10, 110, 210) for transcutaneously placing a hollow cannula (26, 126, 226) of a subcutaneous infusion set (14, 114, 214) through the skin of a patient, comprising:
- a device housing (28, 128, 228) having an elongated bore formed therein, a plunger (30, 130, 230) slidably received within the bore for movement between an advanced position and a retracted position, the plunger (30, 130, 230) having substantially non-detachably secured thereto an insertion needle (12, 112, 212) for receiving and supporting the cannula (26, 126, 226) of said subcutaneous infusion set (14, 114, 214) in a position with the cannula (26, 126, 226) oriented for transcutaneous placement upon movement of the plunger (30, 130, 230) with said needle (12, 112, 212) from the retracted position to the advanced position, a drive for urging the plunger (30,130, 230) with a controlled force and speed from the retracted position toward the advanced position to transcutaneously place said cannula (26, 126, 226) of said subcutaneous infusion set (14,114, 214) received on said insertion needle (12, 112, 212), wherein the insertion needle (12, 112, 212) secured to said plunger (30, 130, 230) is removable from said cannula (26, 126, 226) while maintaining the transcutaneous placement of the cannula (26, 126, 226).
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Accused Products
Abstract
An injector device has a plunger with a medical needle essentially non-detachably secured thereto, preferably a solid needle incapable of delivering a fluid, and is adapted for the quick and easy transcutaneous placement through the skin of a patient of the cannula of a subcutaneous infusion set, the insertion needle extending through the infusion set and protruding from the end of the cannula.
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Citations
30 Claims
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1. An injector device (10, 110, 210) for transcutaneously placing a hollow cannula (26, 126, 226) of a subcutaneous infusion set (14, 114, 214) through the skin of a patient, comprising:
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a device housing (28, 128, 228) having an elongated bore formed therein, a plunger (30, 130, 230) slidably received within the bore for movement between an advanced position and a retracted position, the plunger (30, 130, 230) having substantially non-detachably secured thereto an insertion needle (12, 112, 212) for receiving and supporting the cannula (26, 126, 226) of said subcutaneous infusion set (14, 114, 214) in a position with the cannula (26, 126, 226) oriented for transcutaneous placement upon movement of the plunger (30, 130, 230) with said needle (12, 112, 212) from the retracted position to the advanced position, a drive for urging the plunger (30,130, 230) with a controlled force and speed from the retracted position toward the advanced position to transcutaneously place said cannula (26, 126, 226) of said subcutaneous infusion set (14,114, 214) received on said insertion needle (12, 112, 212), wherein the insertion needle (12, 112, 212) secured to said plunger (30, 130, 230) is removable from said cannula (26, 126, 226) while maintaining the transcutaneous placement of the cannula (26, 126, 226). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An injector device assembly, comprising:
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an infusion set (14, 114, 214) including a housing and a hollow cannula (26, 126, 226), a device housing (28, 128, 228) having an elongated bore formed therein, a plunger (30, 130, 230) slidably received within the bore for movement between an advanced position and a retracted position, the plunger (30, 130, 230) having substantially non-detachably secured thereto an insertion needle (12, 112, 212) carrying said cannula (26, 126, 226) with the cannula (26, 126, 226) oriented for transcutaneous placement upon movement of said plunger (30, 130, 230) from the retracted position to the advanced position, a spring for urging said plunger (30, 130, 230) toward the advanced position, and a trigger for releasably retaining the plunger (30, 130, 230) in the retracted position, the trigger being operable to release the plunger (30, 130, 230) for spring-loaded movement with a controlled force and speed toward the advanced position, wherein the insertion needle (12, 112, 212) secured to said plunger (30, 130, 230) is removable from said cannula (26, 126, 226) while maintaining the transcutaneous placement of the cannula (26, 126, 226). - View Dependent Claims (19, 20, 21, 22, 23, 24)
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25. An injector device, comprising:
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a molded device housing having an elongated bore formed therein, a molded plunger slidably received within the bore for movement between an advanced position and a retracted position, a spring for urging the plunger with a controlled force and speed from the retracted position toward the advanced position, wherein the drive comprises a number of individual, elongated flexible plastics members (136), each member being connected with the plunger and with the device housing, each of said members being integrally molded with said plunger and said device housing. - View Dependent Claims (26, 27, 28, 29, 30)
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Specification