Simple retractable safety syringe

Details Simple retractable safety syringe Simple retractable safety syringe

1993-06-09

1994-09-06

Hirsch, Paul J.

Surgery

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

Treating material introduced into or removed from body...

604195, A61M 500

Patent

active

053444035

ABSTRACT:
A retractable safety syringe has a hub at the end of its plunger which engages a needle carrier when the plunger is depressed so that the needle carrier can be withdrawn into the syringe along with the needle. To facilitate breaking off the plunger shaft, thereby trapping the spent needle within the syringe, there is a conically shaped flangible section between the plunger and the shaft which defines a sharp notch allowing the shaft to be broken off at any angle.

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