Medical applicator assembly for chain cystourethrographic procedure

Claim 1

In a medical applicator assembly for use in a cystourethro examination comprising a tubing having a hollow longitudinal passage, a metallic bead chain loosely and slideably positioned within said passage and means for slideably displacing said chain from said passage, the combination wherein said tubing is a flexible elongated plastic tube having a smooth uninterrupted outer surface and a passage extending axially along the entire length thereof with coaxial proximal and distal openings at opposite ends of said passage, said chain being of substantially the same length as the tubing and having proximal and distal ends with a soft sterile tip secured to the proximal end of said chain, said tip comprising a stem portion snugly received within said passage, an integral head portion larger than said passage and an intermediate shoulder connecting said stem and head portions and abutting the end of said tubing at said proximal opening, said chain being firmly embedded in said tip, said head portion extending beyond the proximal end of said tubing axially of said passage and having a tapered surface with a maximum diameter substantially equal to the diameter of the outer surface of said tubing, said shoulder extending radially from said stem portion to said tapered surface, said chain including means for holding said tip in alignment with said tubing and said shoulder in engagement with said tubing to facilitate insertion of said tip and the proximal end of said tubing through the urinary canal and into the bladder of a patient, said displacing means being an independent member movable into engagement with the distal end of said chain for slideably displacing the chain relative to the tubing and dislodging said stem portion from said passage.