Patent ID: 7722564

Claim:
In combination, a hub; a needle secured to and extending from said hub; a needle housing removably mounted on said hub, said needle housing having an aperture at one end with said needle passing therethrough; a washer mounted in said housing and having flaps to define an aperture for passage of said needle therethrough whereby in response to withdrawal of said needle through said aperture said flaps flex inwardly to block a return passage of said needle through said aperture; and a polyester film strip secured to and between said hub and said housing, said strip having a foremost end thereof secured between said washer and said housing, a series of longitudinally spaced apart apertures receiving said needle therein and being disposed in corrugated relation between said hub and said housing whereby in response to a withdrawal movement of said needle relative to said housing, said needle moves into said housing and into abutment with said housing while said strip is stretched between said hub and said housing to retain said housing connected to said hub under a biasing force.