Inventors:
Lawrence G. DeHarde - Chalmette LA
Michael H. DeHarde - Chalmette LA
International Classification:
A61M 532
Abstract:
A safety system for use in conjunction with an instrument having a needle, wherein there is included a spring biased, locking pushbutton or activation tab apparatus which communicates with a locking safety sheath situated at the base of the hypodermic needle prior to activation. The safety sheath is in sliding, longitudinal communication about the needle, and is activated to its sheathing position by pressing a pushbutton or activation tab on the locking pushbutton or activation tab apparatus, directing the sheath from about the base of the needle to over the tip of the needle. Upon communication with the tip, the safety sheath deploys a locking hatch, preventing the urging of the sheath back to the base, and rendering the needle unreuseable. The present invention operates independently of the syringe plunger when utilized in conjunction with a syringe, allowing the drawing and injection of fluids without interference, and is sheathed in locking position upon urging of the pushbutton or activation tab, "clicking" the sheath into a locked position.