The mechanism is slightly different -the top end of plunger has conical head with 6 degree taper hidden behind the rubber piston. When the drug injected out of syringe ,the plunger is pushed against the needle hub. The needle hub at base has got hollow with 6 degree taper which mates with the conical part at top end of plunger.When the punger is pusehed against the needle hub ,the conical part will mate with hollow at base of needle hub, the needle hub will broken down and will fall back in barrel of syringe, due to this it can not be reused again. Principle use of innovation— 1. To inject drug 2. Take out the blood form body. PATENT B—RETACTABLE AUTO DISABLE SYRINGE FIELD OF INNOVATION- MEDICAL SCIENCE AUTODISBLED SYRINGE This syringe is used for only one times can not be reused as recycling of disposable syringe. Principle of invention— This is made of needle hub made from breakable plastics suspended in barrel of syringe .when he drug is pushed out of barrel,the plunger will exert pressure on needle hub from below this will lead to breakage of needle hub at weak point ,needle hub will get retracted in barrel of syringe, so syringe can not be reused again. Use -For injection of drug and withdrawing the blood in from body.
