Abstract An inflation valve for a retention balloon in a catheter having an inflation lumen communicating with the balloon. The valve has a housing defining a chamber, opening means at one end of the housing communicating between the chamber and the inflation lumen, and an inwardly directed flange at the other end of the housing. A rim is secured to the flange and has a first portion projecting into the chamber, a second portion projecting outwardly from the flange, and a tapered passageway extending through the rim. The valve also includes a compressible plug received in the chamber and having a first shoulder, a neck extending from the first shoulder, a second shoulder extending from the neck, and a tapered stopper extending from the second shoulder and received in the passageway. The plug biases the stopper against the tapered portion of the passageway in sealing engagement to prevent passage of fluid from the chamber, and the plug compresses responsive to the insertion of a syringe tip into the passageway from its outer end to permit passage of fluid from the syringe into the chamber and inflation lumen.
In a catheter including a retention balloon and an inflation lumen communicating with said balloon, an inflation valve comprising: a housing including, a sidewall extending peripherally around a chamber in the housing and having a plurality of spaced beads extending longitudinally along the inner surface of the Sidewall, a base portion extending from one end of the sidewall, said base portion having a plurality of inwardly directed support flanges, and a plurality of channels intermediate said flanges extending from adjacent the inner surface of said sidewall and communicating between the chamber and the inflating lumen, a cap secured to the other end of the sidewall and closing said chamber, said cap having a centrally located passageway to receive the tip of a syringe, and a compressible plug received within said chamber and having a lower surface engaging said support flanges, a side surface adjacent to said beads, an upper surface biased by the plug against the lower surface of said cap to prevent passage of fluid from the chamber into the passageway, and a transverse slot in the upper surface of the plug and extending across said passageway, said plug compressing responsive to the insertion of the syringe tip into the passageway to permit passage of fluid into the chamber and inflation lumen.
Claim 2
Dependent Claim
213 words
In a catheter including a retention balloon and an inflation lumen communicating with said balloon, an inflation valve comprising: a housing including, a sidewall extending peripherally around a chamber in the housing and having a plurality of spaced beads extending longitudinally along the inner surface of the Sidewall, a base portion extending from one end of the sidewall, said base portion having a plurality of inwardly directed support flanges, and a plurality of channels intermediate said flanges extending from adjacent the inner surface of said sidewall and communicating between the chamber and the inflating lumen, a cap secured to the other end of the sidewall and closing said chamber, said cap having a centrally located passageway to receive the tip of a syringe, and a compressible plug received within said chamber and having a lower surface engaging said support flanges, a side surface adjacent to said beads, an upper surface biased by the plug against the lower surface of said cap to prevent passage of fluid from the chamber into the passageway, and a transverse slot in the upper surface of the plug and extending across said passageway, said plug compressing responsive to the insertion of the syringe tip into the passageway to permit passage of fluid into the chamber and inflation lumen.
Claim 3
Dependent Claim
13 words
The inflation valve of claim 1 wherein said plug has a cylindrical shape.
Claim 4
Dependent Claim
42 words
The inflation valve of claim 1 wherein said plug has a lower first shoulder, a neck extending from the first shoulder, and an upper second shoulder extending from the neck, with the second shoulder having said transverse slot in its upper surface.