Cartridge for an injection device

Details Cartridge for an injection device Cartridge for an injection device

1996-08-23

1998-01-20

Rimell, Sam

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604110, 604130, 604157, 604192, 604198, 604187, A61M 520

Patent

active

057096627

ABSTRACT:
An assembly for automatically injecting a fluid into the body is provided. The assembly includes a drive assembly, which can be reused many times, and a disposable assembly including a sleeve which contains a syringe. The drive assembly includes a housing having an open end to which a collar is mounted. The collar includes a radially inwardly extending pawl. The sleeve includes a generally cylindrical body having a radially outwardly extending rib. The rib defines a notch which is engageable with the pawl when the disposable assembly is inserted within the drive assembly housing. Engagement of the pawl within the notch prevents the disposable assembly from being ejected from the drive assembly housing should the actuating button of the drive assembly be pushed prematurely. Ejection of the disposable assembly requires its rotation with respect to the drive assembly housing to first disengage the pawl from the notch.

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