System and method for delivering a mitral valve repair device

A - Human Necessities – 61 – F

Patent

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A61F 2/24 (2006.01)

Patent

CA 2621900

A system and method is provided for treating a mitral valve. The method preferably includes advancing a guide catheter to an ostium of the coronary sinus and advancing a delivery catheter containing a medical implant through the guide catheter and into the coronary sinus. The delivery catheter has an inner member on which the medical implant is held and an outer sheath which is retractable for deploying and releasing the medical implant. In one embodiment, the medical implant has proximal and distal anchors and a bridge containing resorbable material. The inner member may have a flexible sleeve for gripping and holding a portion of the outer sheath, thereby providing a releasable attachment mechanism. In another embodiment, the inner member may include an inflatable balloon having a tapered distal region which extends from the outer sheath for providing an atraumatic tip. The inflatable balloon may also be used to expand the medical implant and to grip the outer sheath.

L'invention concerne un système et un procédé de traitement d'une valvule mitrale. Le procédé selon l'invention consiste de préférence à faire avancer un cathéter-guide jusqu'à un ostium du sinus coronaire et à faire avancer un cathéter de pose contenant un implant médical à travers le cathéter-guide et dans le sinus coronaire. Le cathéter de pose comprend un élément intérieur sur lequel l'implant médical est maintenu et une gaine extérieure qui peut être rétractée pour déployer et larguer l'implant médical. Dans un mode de réalisation, l'implant médical présente des éléments d'ancrage proximal et distal et un pont contenant une matière résorbable. L'élément intérieur peut présenter un manchon flexible destiné à agripper et maintenir une partie de la gaine extérieure de façon à former un mécanisme de fixation détachable. Dans un autre mode de réalisation, l'élément intérieur peut comprendre un ballonnet gonflable comportant une région distale effilée s'étendant à partir de la gaine extérieure pour former une pointe atraumatique. Ce ballonnet gonflable peut être utilisé également pour dilater l'implant médical et retenir la gaine extérieure.

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