Methods of forming catheters with soft distal tips

Details Methods of forming catheters with soft distal tips Methods of forming catheters with soft distal tips

A - Human Necessities

61

M

A61M 25/00 (2006.01)

Patent

CA 2513456

A catheter can be formed from an elongate shaft and a distal tip. The catheter can be formed by flaring a proximal end of the distal tip to form a flared proximal end and positioning the distal tip such that the flared proximal end of the distal tip overlaps a distal end of the outer layer. Heat and pressure are applied to melt and flow together a portion of the outer layer proximate the distal end of the shaft and the overlapped portion of the flared proximal end of the distal tip, thereby forming a joint between the elongate shaft and the distal tip.

L'invention concerne un cathéter pouvant être constitué d'une tige allongée et d'un bout distal. Ce cathéter peut être formé au moyen d'un procédé consistant à évaser l'extrémité proximale du bout distal pour former une extrémité proximale évasée et à positionner le bout distal de façon que l'extrémité proximale évasée du bout distal chevauche une extrémité distale de la couche extérieure. De la chaleur et une pression sont appliquées pour fondre et fusionner une partie de la couche extérieure à proximité immédiate de l'extrémité distale de la tige, ainsi que la partie recouverte de l'extrémité proximale évasée du bout distal, pour former un joint entre la tige allongée et le bout distal.

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