Patent ID: 9539399
Date: 2017-01-10
CPC Classifications: A61M

Claim:
1. A safety syringe comprising a hollow barrel having a barrel head; a plunger having a plunger head; and a detachable needle support; characterized in that the safety syringe comprises: (a) a piston gasket placed in an interference fit with the plunger head of the plunger; (b) a plurality of bone structures within the barrel head, wherein the plurality of bone structures are attached between the barrel head of the hollow barrel and the detachable needle support inserted within the barrel head, such that the plurality of bone structures support and temporarily connect the detachable needle support to the barrel head; (c) a plurality of slots longitudinally disposed at one substantially distal end of the detachable needle support; and (d) stoppers on the barrel head engage with the plurality of slots and inhibit capable of inhibiting the detachable needle support from being advanced into the hollow barrel; such that, when a fluid is injected by a first stroke of the plunger under normal load and an additional load is applied to the plunger one a second stroke to compress the piston gasket, the plunger head of the plunger advances out from the piston gasket to contact and break the plurality of bone structures thereby permanently disengaging the detachable needle support from the barrel head and making the detachable needle support incapable of reuse.