Non-reusable syringe assembly

Details Non-reusable syringe assembly Non-reusable syringe assembly

1989-05-15

1991-10-22

Rosenbaum, C. Fred

Surgery

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

Treating material introduced into or removed from body...

604218, 604228, A61M 500

Patent

active

050591797

ABSTRACT:
A non-reusable syringe is made up of a hollow barrel with a hypodermic needle in communication with one end of the barrel, and a plunger assembly including a plunger movable in tight-fitting engagement through the interior of the barrel and a plunger shaft which extends axially away from the plunger and is releasably connected to one end of the plunger in such a way that relative rotation of the shaft with respect to the plunger in one direction will cause separation of the shaft from the plunger but reverse rotation will maintain the shaft and plunger in connected relation. A nut or keeper is positioned at the opposite end of the barrel to impart rotation to the shaft in response to axial movement of the shaft through the barrel.

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patent: 4731068 (1988-03-01), Hesse
patent: 4781684 (1988-11-01), Trenner

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