Patent ID: 7537589
Filing Date: 2009-05-26
Classification: A61M

Abstract:
1. An intermittent urethra self-retaining catheter set comprising a catheter unit, a disinfectant casing, and a cap; said catheter unit including: a catheter body having an urine-guiding passage and a water-guiding passage that extend along a longitudinal direction and are separated from each other, a balloon attached to a distal end of said catheter body in an inflatable manner and communicated to said water-guiding passage, an elastic plug attached to an intermediate portion of said catheter body, a branched tube bifurcated from said catheter body above said elastic plug and communicated to said water-guiding passage, a reservoir attached to a free end of said branched tube in a collapsible manner for storing a sterilized water, an on off valve attached to an intermediate portion of said branched tube, and a reinforcement tube inserted into an upper interior of said urine-guiding passage in said catheter body; said disinfectant casing being detachably fitted on said elastic plug in a sealing manner for containing a lower part of said catheter body below said elastic plug and for storing a disinfectant liquid; said cap being detachably fitted on a top portion of said catheter body for opening and closing an outlet port; and said on-off valve being adapted to open and close a passage in which said sterilized water flows between said reservoir and said balloon wherein said on off valve includes a valve body, a plunger, and a pull string, wherein said valve body includes a recess that supports said plunger to permit said plunger to reciprocate in said recess with a frictional resistance, a first tube communicated to said reservoir, and a second tube communicated to said branched tube, wherein said plunger includes a plunger body that can reciprocate in said recess with a frictional resistance, a flange, and a communication hole, and wherein said pull string is bound on said flange of said plunger to form a hoop.