Apparatus and method for heart valve repair

摘要

A transcatheter method of gathering tissue of a heart valve leaflet may include inserting an elongated catheter assembly to a position adjacent the heart valve leaflet, the catheter assembly including a capture tool moveable between a retracted position and an extended position, a tissue support, and a clamping member moveable between an open position and a closed position. The capture tool may be partially retracted to gather tissue of the heart valve leaflet between the tissue support and the clamping member. The clamping member may then be moved from the open position toward the closed position so as to clamp a substantial portion of the gathered tissue of the heart valve leaflet between the tissue support and the clamping member. Subsequently, a clip may be applied from the catheter assembly to the clamped tissue so as to hold the clamped tissue substantially in a gathered configuration.

主权项

1. A device for transcatheter gathering of tissue of a heart valve leaflet, the device comprising:
an elongated tube; a capture tool moveable relative to the elongated tube in a longitudinal direction of the elongated tube; a tissue support located within a distal portion of the elongated tube; and a clamping member moveable in the elongated tube between an open position spaced from the tissue support and a closed position adjacent the tissue support, the capture tool and the clamping member being operable to gather and clamp tissue of the heart valve leaflet between the tissue support and the clamping member, such that the clamped tissue has a gathered configuration, wherein the capture tool includes:
a containment tube disposed within the elongated tube and slidable therein in the longitudinal direction between a retracted position within the elongated tube and an extended position in which a distal tip of the containment tube protrudes beyond a distal edge of the elongated tube; anda grasping wire slidably disposed in the containment tube, a distal portion of the grasping wire being adapted to change from a linear shape to a hook shape when the distal portion of the grasping wire is extended out from the containment tube.