Injection device

Details Injection device Injection device

2006-02-07

2006-02-07

Simmons, Kevin C. (Department: 3763)

Surgery

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

Treating material introduced into or removed from body...

C604S246000

Reexamination Certificate

active

06994692

ABSTRACT:
Injection devices are known for the self administration of a medicament by patients. The medicament is typically contained within a cartridge located within an injection device. It is a problem that injection devices should be small enough to fit into a jacket pocket or a hand bag without difficulty. Concurrently, the injection device must be of a size that enables a piston used to drive a cartridge bung within the cartridge to both to a maximum dispense position within the cartridge and to be fully withdrawn from the cartridge to allow for replacement of the cartridge. A drive mechanism for an injection device is disclosed comprising a piston member (10), a semi rigid belt (12) connected at a first end to the piston member (10), a belt drive means to drive the semi rigid belt (12) and a dose setting mechanism to control the driving of the semi rigid belt (12) in which the belt drive means comprises a first cable means (22) connected at a first end to a second end of the semi rigid belt (12) and at a second end to a first spool (24). An injection device comprising such a drive mechanism is also disclosed.

REFERENCES:
patent: 4381006 (1983-04-01), Genese
patent: 5261882 (1993-11-01), Sealfon
patent: 5637095 (1997-06-01), Nason et al.
patent: 6110149 (2000-08-01), Klitgaard et al.
patent: 33 31 424 (1984-03-01), None
patent: 0 462 508 (1991-12-01), None
patent: 0 567 923B (1993-11-01), None
patent: WO 98/57688 (1998-12-01), None

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