Autoinjector with needle depth adapter
First Claim
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1. An autoinjector assembly comprising:
- an outer tube having a distal end and a proximal end, and having an abutment surface defined on the outer tube;
a cartridge assembly having a distal end and a proximal end, moveably situated within the outer tube;
a needle attached to the proximal end of the cartridge assembly;
a punctureable sheath covering the needle with the sheath being nonremovable and maintained within the autoinjector assembly;
an activateable power providing assembly for providing force to move the cartridge assembly to cause the needle to extend out of the proximal end of the outer tube; and
a needle depth adapter connected to the proximal end of the cartridge assembly for limiting the extension of the needle out of the proximal end of the outer tube by abutting the abutment surface of the outer tube and thereby providing a depth of injection of from about 0.15 inches to about 0.30 inches; and
the needle depth adapter having a constant longitudinal length where the longitudinal length is about the same both prior to and after abutting the abutment surface.
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Abstract
An autoinjector useful for, inter alia, providing an injection of liquid medicament is disclosed, which includes a needle depth adapter for achieving a desired injection depth.
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Citations
48 Claims
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1. An autoinjector assembly comprising:
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an outer tube having a distal end and a proximal end, and having an abutment surface defined on the outer tube; a cartridge assembly having a distal end and a proximal end, moveably situated within the outer tube; a needle attached to the proximal end of the cartridge assembly; a punctureable sheath covering the needle with the sheath being nonremovable and maintained within the autoinjector assembly; an activateable power providing assembly for providing force to move the cartridge assembly to cause the needle to extend out of the proximal end of the outer tube; and a needle depth adapter connected to the proximal end of the cartridge assembly for limiting the extension of the needle out of the proximal end of the outer tube by abutting the abutment surface of the outer tube and thereby providing a depth of injection of from about 0.15 inches to about 0.30 inches; and the needle depth adapter having a constant longitudinal length where the longitudinal length is about the same both prior to and after abutting the abutment surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 39)
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24. An autoinjector assembly comprising:
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a cylindrical housing having a distal end and a proximal end with a tapered, nonremovable abutment surface; a cartridge assembly moveably situated within the cylindrical housing including a rigid cartridge having a distal end and a proximal end; and a plunger moveably situated within the rigid cartridge; a needle assembly connected to the proximal end of the rigid cartridge including a needle having a piercing end and an attachment end; a needle hub having a first connection point for connecting the needle assembly to the proximal end of the rigid cartridge and a second connection point for receiving the needle'"'"'s attachment end; and a nonremovable punctureable sheath over the piercing end of the needle which remains substantially within the autoinjector; a power assembly received in the distal end of the cylindrical housing for releasing mechanical energy to move the cartridge assembly with connected needle assembly within the cylindrical housing to cause the needle to extend out of the proximal end of the cylindrical housing; and an annular needle depth adapter received about the needle assembly for limiting the proximal movement of the connected cartridge assembly and needle assembly by abutting the abutment surface resulting in the piercing end of the needle extending to an injection depth; and the needle depth adapter having a longitudinal length and radial thickness with the longitudinal length being about at least twice as large as the radial thickness. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 40)
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32. A method of administering an injection comprising the steps of:
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a) actuating a power assembly and thereby releasing mechanical energy the power assembly in functional contact with a cartridge assembly contained within a cylindrical housing with the cylindrical housing having a distal end and a proximal end; b) moving a nonremovable needle connected to the cartridge assembly and having a proximally extending piercing end, toward the proximal end of the cylindrical housing so that the piercing end of the needle pierces a sheath and extends from the cylindrical housing; and c) limiting the proximal movement of the needle by abutment of a needle depth adapter having a longitudinal length and an abutting surface with the cylindrical housing so that the needle extends to an injection depth with a juncture formed between the longitudinal length and the abutting surface of the needle depth adapter partially deforming against the cylindrical housing. - View Dependent Claims (33, 34, 35, 36, 37, 38)
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41. An autoinjector assembly comprising:
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an outer tube having a distal end and a proximal end, and having an abutment surface defined on the outer tube; a cartridge assembly having a distal end and a proximal end, moveably situated within the outer tube; a needle attached to the proximal end of the cartridge assembly; a punctureable sheath covering the needle with the sheath being nonremovable and maintained within the autoinjector assembly; an activateable power providing assembly for providing force to move the cartridge assembly to cause the needle to extend out of the proximal end of the outer tube; and a needle depth adapter connected to the proximal end of the cartridge assembly for limiting the extension of the needle out of the proximal end of the outer tube by abutting the abutment surface of the outer tube and thereby providing a depth of injection of from about 0.15 inches to about 0.30 inches; the needle depth adapter having a constant longitudinal length where the longitudinal length is about the same both prior to and after abutting the abutment surface; and the needle depth adapter having a longitudinal length and radial thickness with the longitudinal length being about at least twice as large as the radial thickness. - View Dependent Claims (46, 47, 48)
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42. An autoinjector assembly comprising:
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an outer tube having a distal end and a proximal end, and having an abutment surface defined on the outer tube; a cartridge assembly having a distal end and a proximal end, moveably situated within the outer tube; a needle attached to the proximal end of the cartridge assembly; a punctureable sheath covering the needle with the sheath being nonremovable and maintained within the autoinjector assembly; an activateable power providing assembly for providing force to move the cartridge assembly to cause the needle to extend out of the proximal end of the outer tube; and a needle depth adapter connected to the proximal end of the cartridge assembly for limiting the extension of the needle out of the proximal end of the outer tube by abutting the abutment surface of the outer tube and thereby providing a depth of injection of from about 0.20 inches to about 0.30 inches. - View Dependent Claims (43, 44, 45)
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Specification