Preventing dislodgement of a constricting cord that has been affixed to a cardiac valve annulus
Dislodgment of a constricting cord from an annulus can be prevented by delivering the distal loop portion of the constricting cord to the annulus using a percutaneous delivery tool, and launching anchors into the annulus so as to affix the distal loop portion of the constricting cord to the annulus. The percutaneous delivery tool is withdrawn in a proximal direction after the anchors have been launched. A pushing member is pressed in a distal direction so that the pushing member holds a portion of the constricting cord against the annulus with enough pressure to prevent dislodgment of any of the anchors during the withdrawal of the percutaneous delivery tool.
1. A method of attaching a cinching cord with a distal loop portion to an annulus or to tissue adjacent to the annulus, the method comprising:
delivering the distal loop portion of the cinching cord to a vicinity of the annulus using a percutaneous delivery tool;
launching at least four anchors into the annulus or into the tissue adjacent to the annulus, wherein the at least four anchors are configured to affix the distal loop portion of the cinching cord to the annulus or to the tissue adjacent to the annulus;
withdrawing the percutaneous delivery tool in a proximal direction after the at least four anchors have been launched; and
pressing a pushing member in a distal direction so that the pushing member holds a portion of the cinching cord against the annulus or against the tissue adjacent to the annulus with enough pressure to prevent dislodgment of any of the at least four anchors during the withdrawal of the percutaneous delivery tool.
2. The method of claim 1 , wherein the at least four anchors comprises at least eight anchors.