A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
A61M 25/10 (2006.01) A61M 29/02 (2006.01)
Patent
CA 2208795
An improved dilatation catheter is described which has an oblong transverse cross section along essentially its entire length and a stiffening mandrel (23) extending within the proximal section and a part of the distal portion. In a presently preferred embodiment, the large dimension of the proximal section (24) of the catheter shaft (11) is greater than the corresponding large dimension of the distal shaft section (25) and a tapered region is provided between the proximal and distal shaft sections. The stiffening mandrel (23) has a proximal section with at least one dimension greater than the corresponding dimension of the distal section and a tapered transition section (26) is provided between the proximal and distal mandrel sections. The length of the proximal section of the mandrel is such so as to locate the tapered transition section (26) of the mandrel within the proximal section of the catheter shaft. This results in a smoother overall transition between the proximal and distal sections of the catheter shaft.
L'invention concerne un cathéter de dilatation amélioré possédant une section transversale oblongue sur pratiquement la totalité de sa longueur et une broche (23) de renforcement s'étendant à l'intérieur de la section proximale, ainsi qu'à l'intérieur d'une partie de la section distale. Dans un mode de réalisation préféré, la dimension principale de la section proximale (24) de la tige (11) du cathéter est supérieure à la dimension principale correspondante de la section (25) distale de la tige et une partie rétrécie en cône se trouve entre les sections proximale et distale de la tige. La broche de renforcement (23) possède une section proximale, dont au moins une dimension est supérieure à la dimension correspondante de la section distale et une section de transition (26) rétrécie en cône se trouve entre les sections proximale et distale de la broche. La longueur de la section proximale de la broche permet de placer sa section (26) conique de transition à l'intérieur de la section proximale de la tige de cathéter. Ceci permet d'obtenir une transition moins accentuée entre les sections proximale et distale de la tige de cathéter.
Advanced Cardiovascular Systems Inc.
Dennison Associates
LandOfFree
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