Folding spring for a catheter balloon

A - Human Necessities – 61 – M

Patent

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Details

A61M 25/10 (2006.01) A61M 29/00 (2006.01) A61M 25/00 (2006.01)

Patent

CA 2378277

A device for folding a balloon of a balloon catheter during balloon deflation includes a band and a plurality of elongated fingers that are attached to the band. The band is formed with a tab and a notch and the length of the band corresponds to the diameter of the catheter tube. The band is folded into an annulus to interlock the tab with the notch. The annulus is attached to the catheter tube of the balloon catheter with the fingers extending over the balloon in a substantially same axial direction. In operation, the fingers are moveable between an unstressed configuration, when the balloon is deflated, and a stressed configuration, when the balloon is inflated. In a stressed configuration, the fingers urge against the balloon and are biased toward the stressed configuration to return to an unstressed configuration.

Un dispositif de pliage d'un ballonnet d'un cathéter à ballonnet pendant le dégonflage du ballonnet comprend une bande et une pluralité de doigts allongés qui sont attachés à la bande. La bande est formée avec un onglet et un cran et la longueur de la bande correspond au diamètre du tube du cathéter. La bande est pliée dans un anneau pour interverrouiller l'onglet et le cran. L'anneau est fixé au tube du cathéter à ballonnet avec les doigts s'étendant sur le ballonnet dans une essentiellement même direction axiale. En opération, les doigts sont mobiles entre une configuration non perturbée quand le ballonnet est dégonflé, et une configuration perturbée, lorsque le ballonnet est gonflé. Dans le cas d'une configuration perturbée, les doigts se collent contre le ballonnet et favorisent le retour de la configuration perturbée vers une configuration non perturbée.

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