The present self destructible fool proof disposable needle - syringe for medicinal application and usage invented device ensures single usage of the syringe for injecting medicine, and itself gets destroyed after the single usage, thus rendering it useless for re-usage. The needle assembly once fitted to the syringe can not be taken out without disfiguring or mutilating the needle or breaking the syringe. The piston rod on movement breaks the circular flaps or fins giving visual indicating about the usage of the piston assembly. Further on completion of the injection process, the piston gets punctured resulting in loss of its air and or hydraulic tightness so that fresh medicine can not be injected through the said piston assembly. In certain embodiments the syringe gets destroyed after injection process. Another salient feature of the invention is that by providing detachable caps at the rear end of the needle and also on the top of the syringe, the shelf life of the product is considerably enhanced as sterilization provided at factory end is not lost even when packaging deteriorates or looses its air tightness. The invented device enhances confidence in patients and doctors and in turn the society is saved from unwanted speared of dreadful diseases through unscrupulous re-usage(s)
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