Multilumen extruded catheter
AssigneeTarget Therapeutics, Inc.
InventorsHiram Chee, Mark Glowacki, Laurent Schaller
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Abstract
This invention is a surgical device. In particular, it is a multilumen catheter having a shaft, at least a portion of which is continuously extruded and undergoes a change in polymer composition during that extension. The invention includes the substituent shaft per se and a method of making the shaft.
Claims22
A multilumen catheter shaft having a distal end, a proximal end, and a longitudinal axis extending between said distal end and proximal end, said shaft having at least two discrete lumens sharing a common wall between said distal and proximal ends, at least one of said discrete lumens being defined by multiple circumferential layers, at least two of said circumferential layers comprising different polymers, and where the shaft along the longitudinal axis is divided into at least two sectors between those ends having transition regions between said sectors, each said sector having a flexibility normal to the longitudinal axis different from an adjacent sector, where said shaft has been continuously extruded between said distal to said proximal end.
A multilumen catheter shaft having a distal end, a proximal end, and a longitudinal axis extending between said distal end and proximal end, said shaft having at least two discrete lumens sharing a common wall between said distal and proximal ends, and where the shaft along the longitudinal axis is divided into at least two sectors between those ends having transition regions between said sectors, each said sector having a flexibility normal to the longitudinal axis different from an adjacent sector, and at least two of said sectors having different outer diameters and comprising at least in part different polymers, where said shaft has been continuously extruded between said distal and said proximal end.
Dependencies are inferred from the claim text.