3862635 is referenced by 15 patents and cites 6 patents.

An endotracheal tube including a preformed inflatable plastisol balloon telescopically fitted over and secured to a forward end portion of a dual-lumen tube. The inflatable balloon is formed with an elongated forward collar which is fitted onto the dual-lumen tube. The tube and collar are simultaneously severed along a biased cut to provide an open front end of the endotracheal tube. The forward collar and dual-lumen tube are then fused into a generally homogeneous mass to provide a smooth exterior sliding surface at the forward end portion of the endotracheal tube.

Smooth tipped endotracheal tube
Application Number
Publication Number
Application Date
April 23, 1973
Publication Date
January 28, 1975
Harautuneian Andrew
Merrick Robert T
Barger Larry N
American Hospital Supply Corporation
A61m 25/00
A61M 16/04
A61M 25/00
View Original Source