Patent ID: 8556853
Filing Date: 2013-10-15
Classification: A61M

Abstract:
1. In combination, a hub; a needle secured to and extending from said hub and having a sharpened end for insertion in a patient; a needle housing removably mounted on said hub, said needle housing having an aperture at one end with said needle passing therethrough; a polyester film strip secured to and between said hub and said housing, said strip having a series of longitudinally spaced apart apertures receiving said needle therein and being disposed in corrugated relation between said hub and said housing whereby before said needle is withdrawn from the patient said housing is movable from said hub over said needle while said strip extends between said hub and said housing and as said needle is withdrawn from the patient said housing is movable beyond said sharpened end of said needle while said strip is stretched to an extended state between said hub and said housing and upon release of said housing said strip is retracted to return said housing towards said sharpened end of said needle to retain said housing connected to said hub under a biasing force in said strip directing said housing towards said hub; and a flat washer mounted in said housing to secure one end of said strip to said housing whereby upon retraction of said strip said sharpened end of said needle abuts said washer.