Stent compression method

A - Human Necessities – 61 – F

Patent

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Details

A61F 2/06 (2006.01) A61M 25/10 (2006.01) A61M 25/16 (2006.01) B21D 26/02 (2006.01)

Patent

CA 2502895

A stent compression method for particular use in pre-surgical securing and conforming of a vascular stent upon an angioplasty balloon. One variation of the stent compression method comprises inflating an agioplasty balloon inside a vascular stent in order to secure the vascular stent upon the balloon; applying uniform compression pressure around the balloon/stent unit; and adjusting the internal balloon pressure and the compression pressure so that the balloon/stent unit is compressed. A pressure chamber with an elastic cylindrical membrane mounted inside the chamber may be used to provide the compression pressure. The inflated balloon provides the balancing pressure from inside the stent. The maintenance of internal balloon pressure during the stent compression process may provide uniform distribution of pressure along the stent and even radial compression rate around the circumferential surface of the stent.

L'invention concerne un procédé de compression d'un stent à utiliser particulièrement pour la fixation et l'adaptation d'un stent vasculaire sur un ballonnet d'angioplastie avant l'intervention. Un mode de réalisation du procédé de compression d'un stent consiste à gonfler un ballonnet d'angioplastie à l'intérieur d'un stent vasculaire, de manière à fixer le stent vasculaire sur le ballonnet; à appliquer une pression de compression uniforme autour de l'ensemble ballonnet/stent; et à régler la pression interne du ballonnet et la pression de compression, de manière que l'ensemble ballonnet/stent soit comprimé. Une chambre à pression dotée d'une membrane élastique cylindrique montée à l'intérieur de la chambre peut être utilisée pour fournir la pression de compression. Le ballonnet gonflé fournit la pression de compensation à partir de l'intérieur du stent. Le maintien de la pression interne du ballonnet pendant le procédé de compression du stent peut fournir une distribution uniforme de la pression le long du stent et un taux de compression radiale uniforme autour de la surface circonférentielle du stent.

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