Methods and devices for catheter advancement and delivery of...

A - Human Necessities – 61 – M

Patent

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A61M 25/01 (2006.01)

Patent

CA 2666862

Methods and devices for successively advancing a plurality of catheters over a guide element to a body tissue are described. In some of the methods, the guide element may be attached to the body tissue, which may be accessible minimally invasively. In certain variations, the guide element may not be detached from the body tissue after the catheters have been advanced over the guide element. The methods may further comprise deploying at least one implant from at least one of the plurality of catheters. In some variations, a method may comprise advancing a first delivery catheter to a first region of a body tissue, deploying a first anchor from the first delivery catheter, where the first anchor is attached to a guide element, proximally withdrawing the first delivery catheter, advancing a second delivery catheter over the guide element, and deploying a second anchor from the second delivery catheter.

La présente invention concerne des procédés et des dispositifs permettant de faire avancer successivement une pluralité de cathéters sur un élément de guidage au niveau d'un tissu corporel. Dans certains procédés, l'élément de guidage peut être fixé au tissu corporel, dont on peut avoir accès par une chirurgie à invasion minimale. Dans certaines variations, l'élément de guidage ne peut pas être détaché du tissu corporel après que les cathéters aient été avancés sur l'élément de guidage. Les procédés peuvent en outre comprendre le déploiement d'au moins un implant depuis le ou les cathéters. Dans certaines variations, un procédé peut comprendre les étapes consistant à faire avancer un premier cathéter de délivrance au niveau d'une première région d'un tissu corporel, déployer un premier élément d'ancrage depuis le premier cathéter de délivrance, lorsque le premier élément d'ancrage est fixé à un élément de guidage, retirer proximalement le premier cathéter de délivrance, faire avancer un second cathéter de délivrance sur l'élément de guidage et déployer un second élément d'ancrage depuis le second cathéter de délivrance.

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