Patent ID: 6648856
Filing Date: 2003-11-18
Classification: A61M

Abstract:
A needle with an extensible telescopic system assembly for medical and/or veterinary use during body fluid extraction comprising:two concentric cylindrical builds forming an inner cylindrical build and an outer cylindrical build; a compression and expansion spring; the inner cylindrical build having longitudinally elongated self-expansive flanges integral thereto, the longitudinally elongated self-expansive flanges are made of a resilient material with its fore and rear ends in contact with the internal surface of the outer cylindrical build; the outer cylindrical build having an inner edge and a stuck and activation element; the two concentric cylindrical builds and the compression and expansion spring are assembled to form an extensible telescopic system that is provoked by the stuck and activation element; and wherein activation of the compression and expansion spring of the extensible telescopic system after fluid extraction and a hypodermic needle is removed from the body during use causes the longitudinally elongated self-expansive flanges to work and cause the outer cylindrical build to cover the hypodermic needle thereof and making it impossible to re-expose the needle.