Non-dosing cartridge for an injection device
First Claim
1. An assembly for storing and injecting a fluid of the type including a sleeve, said sleeve including a first end and a second end, a syringe assembly slidably positioned within said sleeve, said syringe assembly including a cartridge, a piston slidably positioned within said cartridge, and a needle mounted to said cartridge, said needle extending from said cartridge towards said first end of said sleeve, and a cap removably mountable to said first end of said sleeve, wherein the improvement comprises:
- a first locking member positioned upon said cap;
a second locking member positioned upon said sleeve, said second locking member being engageable with said first locking member when said cap is mounted to said first end of said sleeve; and
a lock release member positioned upon said sleeve, said lock release member being operatively engageable with said second locking member.
2 Assignments
0 Petitions
Accused Products
Abstract
A device for automatically injecting a material into the body is disclosed. The device includes a drive assembly and a disposable assembly including a syringe which is mounted to the drive assembly. The drive assembly includes a drive rod, a driver releasably coupled to the drive rod, and a spring which urges the drive rod towards the syringe assembly. The spring first urges the coupled drive rod and driver along the axis of the device, causing the skin to be penetrated by the needle of the syringe assembly. The drive rod is then decoupled from the driver. The spring continues to urge the drive rod in the axial direction, whereby the drive rod engages a piston in the syringe assembly and causes the displacement of the material therein. A cap is removably mounted to the disposable assembly. Locking members on the cap and disposable assembly prevent removal of the cap until the disposable assembly is moved to the firing position within the drive assembly. A lock release assembly including cooperating elements on the drive assembly and disposable assembly causes disengagement of the locking members upon rotation of the disposable assembly with respect to the drive assembly.
233 Citations
17 Claims
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1. An assembly for storing and injecting a fluid of the type including a sleeve, said sleeve including a first end and a second end, a syringe assembly slidably positioned within said sleeve, said syringe assembly including a cartridge, a piston slidably positioned within said cartridge, and a needle mounted to said cartridge, said needle extending from said cartridge towards said first end of said sleeve, and a cap removably mountable to said first end of said sleeve, wherein the improvement comprises:
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a first locking member positioned upon said cap; a second locking member positioned upon said sleeve, said second locking member being engageable with said first locking member when said cap is mounted to said first end of said sleeve; and a lock release member positioned upon said sleeve, said lock release member being operatively engageable with said second locking member. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An automatic injection device comprising:
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a drive assembly including a housing and a drive rod slidably mounted with said housing; a syringe assembly including a cartridge, a piston slidably mounted within said cartridge, and a needle assembly mounted to said cartridge; means for resiliently urging said drive rod towards said syringe assembly; a sleeve having a first end and a second end, said syringe assembly being positioned at least partially within said sleeve, said second end of said sleeve being removably coupled to said housing of said drive assembly; a cap removably mounted to said first end of said sleeve; a first locking member positioned upon said cap; a second locking member positioned upon said sleeve, said second locking member being engageable with said first locking member when said cap is mounted to said first end of said sleeve; and a lock release assembly, said lock release assembly being operatively engageable with at least one of said first and second locking members such that said first and second locking members are disengaged upon rotation of said sleeve with respect to said housing of said drive assembly. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification