Syringe assembly

Details Syringe assembly Syringe assembly

1994-07-08

1997-06-03

Hafer, Robert A.

Surgery

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

Treating material introduced into or removed from body...

604195, 604241, A61M 500

Patent

active

056349033

ABSTRACT:
A syringe assembly includes a syringe body, and a plunger having a main body and a gasket mounted on its distal end portion. A needle-mounting member is detachably mounted on a distal end portion of the plunger main body. A plunger-engaging mechanism is provided on the needle-mounting member. An engaging member is provided on a distal end of the gasket, for engaging with the plunger-engaging mechanism. The needle-mounting member and the plunger further have a first structure which transmits a torque from the plunger in a direction to release an engagement between the syringe main body and the needle-mounting member to the needle-mounting member, and a second structure which releases an engagement between the engaging member and the plunger-engaging mechanism through a rotation of the plunger in a direction to keep an engagement between the needle-mounting member and the plunger main body.

REFERENCES:
patent: Re33821 (1992-02-01), Banks
patent: 4850968 (1989-07-01), Romano
patent: 4888002 (1989-12-01), Braginetz et al.
patent: 4978340 (1990-12-01), Terrill et al.
patent: 4986813 (1991-01-01), Blake, III et al.
patent: 5112315 (1992-05-01), Gloyer et al.
patent: 5188597 (1993-02-01), Sweeney et al.
patent: 5215524 (1993-06-01), Vallelunga et al.
patent: 5215533 (1993-06-01), Robb
patent: 5263934 (1993-11-01), Haak
patent: 5336186 (1994-08-01), Haber et al.
patent: 5403288 (1995-04-01), Stanners
patent: 5415638 (1995-05-01), Novacek et al.

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