04795439 is referenced by 203 patents and cites 17 patents.

An improved multi-lumen catheter having lumens which do not extend in a straight line down the length of the catheter is disclosed. The twisting of the catheter provides that side holes which extend into the lumens of the catheter are not aligned in a straight line. Accordingly, when the catheter is inserted into a patient's vessel, the side holes cannot be aligned in a manner which causes all of the side holes of a particular lumen to be occluded by the wall of the patient's vessel.

A catheter of the type disclosed can be manufactured by an extrusion process in which the catheter is twisted during the extrusion, or by heating a non-twisted catheter and then twisting it in order to impart an appropriate twist therein.

Title
Spiral multi-lumen catheter
Application Number
871354
Publication Number
4795439
Application Date
April 8, 1988
Publication Date
January 3, 1989
Inventor
Robert L Guest
Athens
TX, US
Agent
Robert E Lee Jr
Lawrence S Levinson
Assignee
Edward Weck Incorporated
NJ, US
IPC
A61M 5/00
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