Double chamber disposable syringe

Details Double chamber disposable syringe Double chamber disposable syringe

1994-07-14

1996-02-06

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

604191, A61M 500

Patent

active

054892678

ABSTRACT:
A double chamber disposable syringe includes a main hollow body having an inner diameter and engaged with an injection needle. A second hollow body is included having an outer diameter smaller than the inner diameter of the main body and having an open lower end and an upper end. The upper end defines a plugging end. A plunger projects through the open lower end of the second hollow body. The second hollow body is positioned between the main body and the plunger. A plug is engaged with the inner diameter of the main body and located adjacent the plugging end. The plug and the plugging end have conduits in substantial alignment wherein the conduit of the plug leads into the main body and the conduit of the plugging end leads into the second body. A cylindrical needle cover extends from the main body and is slidably engaged therewith for enclosing the needle. A sheet means utilized for separating the conduits of the plug and plugging end is positioned between the conduits of the plug and plugging end. The sheet is penetrable via the pressure created by the plunger in the second body.

REFERENCES:
patent: 4702737 (1987-10-01), Pizzino
patent: 4886495 (1989-12-01), Reynolds
patent: 4941876 (1990-07-01), Meyer et al.
patent: 4969877 (1990-11-01), Kornberg
patent: 5015229 (1991-05-01), Meyer et al.
patent: 5395325 (1995-03-01), Moreno et al.

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