Catheter with spiral cut transition member

Details Catheter with spiral cut transition member Catheter with spiral cut transition member

A - Human Necessities

61

M

A61M 25/00 (2006.01) A61M 25/10 (2006.01)

Patent

CA 2361720

A spiral cut transition member (124) is disclosed for controlling the transition in stiffness of a catheter from a stiffer more pushable proximal section (116) to a more flexible and trackable distal section (120) and for increasing kink resistance. The transition member has a spiral cut (126) provided therein to vary the flexibility of the transition member over its length. The pitch of the spiral cut can be varied to facilitate a gradual transition in flexibility along the catheter. The transition member may be used in conjunction with any type of catheter including single-operator-exchange type catheters, over-the wire type catheters, and/or fixed-wire type catheters.

Cette invention a trait à un élément de transition à découpe en spirale (124) permettant d'agir sur la transition en matière de rigidité d'un cathéter d'une section proximale pouvant être poussée et plus rigide (116) à une section distale pouvant être suivie et plus souple (120), cet élément permettant également de renforcer la résistance au vrillage. Cet élément de transition renferme une découpe en spirale (126) destinée à modifier sa souplesse sur toute sa longueur. Le pas de la découpe en spirale peut varier afin de faciliter une transition graduelle en matière de flexibilité le long du cathéter. Il est possible d'utiliser cet élément de transition avec n'importe quel type de cathéter, au nombre desquels, des cathéters du type à échange par opérateur unique, du type sur le fil-guide et/ou du type à fil-guide fixé.

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