Multiple chamber automatic injector

Details Multiple chamber automatic injector Multiple chamber automatic injector

1995-07-24

1998-12-08

McDermott, Corrine M.

Surgery

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

Treating material introduced into or removed from body...

604 82, 604135, 604138, 604191, 604206, A61M 500

Patent

active

RE0359866

ABSTRACT:
An automatic injector is provided having at least two chambers containing membrane. A lance is movable independently of a plunger to cut or pierce the membrane before a spring-loaded drive member for the plunger is released to drive a needle out of the body of the injector and discharge the medicament through the needle. A removable safety clip is provided for preventing movement of art actuating cap into an operative position for advancing the lance, and release of the drive member is preventable by a removable safety pin until the injector is to be used..!. a sealing structure. One of the chambers has a needle disposed therein. The sealing structure is conditionable to permit the ingredients to mix in the injector in response to a predetermined actuating procedure before the ingredients are injected.

REFERENCES:
patent: 1943120 (1934-01-01), Kabnick
patent: 2688966 (1954-09-01), Huber
patent: 4059109 (1977-11-01), Tischlinger
patent: 4316463 (1982-02-01), Schmitz et al.
patent: 4484910 (1984-11-01), Sarnoff et al.
patent: 4643721 (1987-02-01), Brunet
patent: 4755169 (1988-07-01), Sarnoff
patent: 4822340 (1989-04-01), Kamstra
patent: 4983164 (1991-01-01), Hook
patent: 5085642 (1992-02-01), Sarnoff
patent: 5092843 (1992-03-01), Monroe

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