Flexible catheter

Details Flexible catheter Flexible catheter

1996-08-22

1998-01-06

Buiz, Michael Powell

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604264, 604280, A61M 2500

Patent

active

057049262

ABSTRACT:
The invention provides a catheter capable of delivering drugs or other fluids to a desired remote location in a bodily passageway, such as a small, tortuous artery. The catheter of the invention includes inner and outer tubular layers, and a continuous helical wire coil disposed between the tubular layers along substantially the entire length of the catheter. To enhance trackability and pushability, the wire coil is constructed to provide regions of differing flexibility to the catheter. The wire coil in a first portion of the catheter has a first coil pitch and the wire coil in a second section of the catheter has a second coil pitch which is larger than the first coil pitch to provide the second section of the catheter with greater flexibility than the first section.

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