Injector device for placing a subcutaneous infusion set
First Claim
1. An injector device for transcutaneously placing a hollow cannula of a subcutaneous infusion set through the skin of a patient, comprising:
- a device housing, a plunger slidably received within the device housing for movement between an advanced position and a retracted position, the plunger having an insertion needle secured thereto by a stable connection preventing loss of the insertion needle during use of the device, said insertion needle receiving and supporting the cannula of said subcutaneous infusion set in a position with the cannula oriented for transcutaneous placement upon movement of said plunger with said needle from the retracted position to the advanced position, a drive for urging the plunger from the retracted position toward the advanced position to transcutaneously place said cannula of said subcutaneous infusion set received on said insertion needle, and wherein the insertion needle secured to said plunger is removable from said cannula while maintaining the transcutaneous placement of the cannula.
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0 Petitions
Accused Products
Abstract
An injector device assembly and a method for making an injector device assembly are provided. The injector assembly includes a sterile insertion set with a housing and a hollow cannula and a device housing. A plunger is slidably received within the device housing for movement between an advanced position and a retracted position wherein the cannula is transcutaneously placed upon movement of the plunger from the advanced position to the retracted position. The device housing has a forward end defining a surface of placement against the skin of a patient with the device housing in a predetermined orientation relative to the patient'"'"'s skin. The injector device assembly includes a spring for urging the plunger toward the advanced position and a releasable cover member covering the forward end. The cover member and the device housing assure sterile conditions of the insertion set within the device housing prior to removal of the cover member.
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Citations
49 Claims
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1. An injector device for transcutaneously placing a hollow cannula of a subcutaneous infusion set through the skin of a patient, comprising:
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a device housing, a plunger slidably received within the device housing for movement between an advanced position and a retracted position, the plunger having an insertion needle secured thereto by a stable connection preventing loss of the insertion needle during use of the device, said insertion needle receiving and supporting the cannula of said subcutaneous infusion set in a position with the cannula oriented for transcutaneous placement upon movement of said plunger with said needle from the retracted position to the advanced position, a drive for urging the plunger from the retracted position toward the advanced position to transcutaneously place said cannula of said subcutaneous infusion set received on said insertion needle, and wherein the insertion needle secured to said plunger is removable from said cannula while maintaining the transcutaneous placement of the cannula. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 25, 44, 45, 46)
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16. An injector device assembly, comprising:
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an infusion set including a housing and a hollow cannula, a device housing, a plunger slidably received within the device housing for movement between an advanced position and a retracted position, the plunger having an insertion needle secured thereto by a stable connection preventing loss of the insertion needle during use of the device, said insertion needle extending through said cannula with the cannula oriented for transcutaneous placement upon movement of the plunger from the retracted position to the advanced position, a spring for urging said plunger toward the advanced position, and a trigger for releasably retaining the plunger in the retracted position, the trigger being operable to release the plunger for spring-loaded movement with a controlled force and speed toward the advanced position, wherein the insertion needle secured to said plunger is removable from said cannula while maintaining the transcutaneous placement of the cannula. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 26, 27, 28, 29, 30, 31, 47, 48, 49)
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32. An injector device, comprising:
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molded device housing, a molded plunger slidably received within the device housing for movement between an advanced position and a retracted position, a lock for releasably locking said plunger in said retracted position, said housing being manually deformabte to effect release of said plunger, a drive for urging the plunger from the retracted position towards the advanced position, wherein the drive comprises a number of individual flexible plastics members (136), each member being connected with the plunger and with the device housing. - View Dependent Claims (33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43)
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Specification