Apparatus for delivering a closure device to an opening of a...

A - Human Necessities – 61 – B

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A61B 17/00 (2006.01) A61B 19/00 (2006.01)

Patent

CA 2427279

An apparatus (10) for delivering a closure element into a puncture communicating with a blood vessel (90) includes an introducer sheath (12), and a locator member (14) disposed within the sheath, the locator member (14) having a distal portion extending distally beyond the distal end of the sheath. A plurality of splines (64) are provided on the distal portion of the locator member (14), the splines (64) being selectively expandable between an axial collapsed configuration and a transverse expanded configuration. An actuator (70) is coupled to the locator member (14) for controllably expanding the splines (64). A housing (24) is slidably disposed on the sheath for deploying a closure element, such as a vascular clip (26). The locator actuator (70) may automatically collapse the splines (64) upon advancement of the housing (24). Alternatively, the distal portion includes a helically wound wire (444) and a tether (450) coupled to the wire that is movable for causing the wire to buckle instead of the splines.

L'invention porte sur un appareil destiné à amener un élément de fermeture dans une perforation communiquant avec un vaisseau sanguin. Cet appareil comprend une gaine d'introducteur et un élément de localisation placé dans la gaine et dont la partie distale s'étend au-delà de l'extrémité distale de la gaine. Une pluralité de languettes sont formées sur la partie distale de l'élément de localisation, ces languettes pouvant s'étendre sélectivement entre une configuration axiale pliée et une configuration transversale dilatée. Un actionneur est couplé à l'élément de localisation de façon à étendre de manière contrôlée les languettes. Un corps est disposé coulissant sur la gaine de façon à déployer un élément de fermeture tel qu'une pince vasculaire. L'actionneur du localisateur peut rabattre automatiquement les languettes lorsque le corps avance. En variante, la partie distale comprend un fil métallique enroulé en spirale et auquel est couplé un câble qui peut se déplacer de façon à former des boucles avec le fil à la place des languettes.

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