Treating dysfunctional cardiac tissue
Medical devices, systems, and methods reduce the distance between two points in tissue, often for treatment of congestive heart failure and often in a minimally invasive manner. An anchor is inserted along an insertion path through a first wall of the heart. An arm of the anchor is deployed and rotationally positioned according to a desired alignment. Application of tension to the anchor may draw the first and second walls of the heart into contact along a desired contour so as to effect a desired change in the geometry of the heart. Additional anchors may be inserted and aligned with the first anchor to close off a portion of a ventricle such that the ventricle is geometrically remodeled and disease progression is reversed, halted, and/or slowed.
1. A catheter for treating a heart of a patient, the heart having a chamber bordered by a wall, the catheter comprising:
an elongate catheter body having a flexible distal end, the elongate catheter body being insertable within a patient so that the flexible distal end is positioned adjacent the wall of the heart; and
a director member coupled with the flexible distal end, the director member comprising:
a main body that is slidably coupled with a proximal portion of the flexible distal end such that the flexible distal end is advanceable distally of the main body;
a distal body that is fixedly coupled with a distal portion of the flexible distal end; and
an elongate body that connects the distal body to the main body, the distal body being connected to the elongate body via an articulated hinge;
wherein the director member is configured to adjust an orientation of the flexible distal end relative to the elongate catheter body by advancing the flexible distal end distally of the main body while the distal body maintains the distal portion of the flexible distal end in place thereby adjusting a length of the flexible distal end between the main body and the distal body and thereby reorienting the distal body relative to the main body via the articulated hinge;
wherein adjusting the orientation of the flexible distal end comprises reorienting the flexible distal end from a relatively straight configuration to a curved configuration wherein the proximal portion of the flexible distal end curves away from the wall of the heart and the distal portion of the flexible distal end curves back toward the wall of the heart.
2. The catheter of claim 1 , wherein the distal body is positioned on an exterior surface of the flexible distal end.
3. The catheter of claim 1 , wherein the articulated hinge is positioned proximally of a distal most tip of the flexible distal end.
4. The catheter of claim 1 , wherein a length of the elongate body between the main body and the distal body is unchanged as the flexible distal end is reoriented from the relatively straight configuration to the curved configuration.
5. The catheter of claim 1 , wherein an alignment of the elongate body and the main body is maintained as the flexible distal end is reoriented from the relatively straight configuration to the curved configuration.
6. The catheter of claim 1 , wherein the distal body is positioned adjacent a tip of the flexible distal end, the tip having an aperture, and wherein adjusting the orientation of the flexible distal end causes the aperture to reorient to a lateral position.
7. The catheter of claim 1 , wherein the wall is a septum of the heart, the orientation of the flexible distal end being adjustable within the chamber of the heart to position a tip of the flexible distal end adjacent the septum.
8. The catheter of claim 7 , wherein a component is insertable through the septum with the tip of the flexible distal end positioned adjacent the septum.