Cardiac implant migration inhibiting systems
First Claim
1. A system for inhibiting migration of anchors of a heart implant device comprising:
- a tension member having a first end and a second end;
a first anchor coupled with the tension member at the first end, the first anchor being configured for anchoring engagement with a first wall of a heart;
a second anchor slidably couplable with the tension member, the second anchor having a variable force mode that allows the second anchor to axially slide proximally and distally along the tension member and also having a set force mode that inhibits proximal movement of the second anchor along the tension member, the second anchor being configured for anchoring engagement with a second wall of the heart; and
a tension device configured to engage the second anchor so as to apply an anchor force between the tension member and the second anchor;
wherein the tension device comprises a shaft comprising a proximal end, a distal end, and a lumen through which the tension member is insertable, and wherein the anchor force is applied by tensioning a portion of the tension member extending proximally of the tension device;
wherein the tension device further comprises a tube slidably disposed over the shaft, a compression spring that is operably coupled with the shaft and the tube, and indicia that provides an indication of the anchor force applied between the tension member and the second anchor as the shaft is advanced distally through the tube.
1 Assignment
0 Petitions
Accused Products
Abstract
Medical devices, systems, and methods reduce the distance between two locations in tissue, often for treatment of congestive heart failure. In one embodiment an anchor of an implant system may reside within the right ventricle in engagement with the ventricular septum. A tension member may extend from that anchor through the septum and an exterior wall of the left ventricle to a second anchor disposed along an epicardial surface. Deployment of the anchor within the right ventricle may be performed by inserting a guidewire through the septal wall into the right ventricle. The anchor may be inserted into the right ventricle over the guidewire and through a lumen of a catheter. An anchor force may be applied within a desired range to secure the anchors about the septum and epicardial surface. The anchor force may inhibit migration of the anchors relative to the septum and epicardial surface.
168 Citations
22 Claims
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1. A system for inhibiting migration of anchors of a heart implant device comprising:
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a tension member having a first end and a second end; a first anchor coupled with the tension member at the first end, the first anchor being configured for anchoring engagement with a first wall of a heart; a second anchor slidably couplable with the tension member, the second anchor having a variable force mode that allows the second anchor to axially slide proximally and distally along the tension member and also having a set force mode that inhibits proximal movement of the second anchor along the tension member, the second anchor being configured for anchoring engagement with a second wall of the heart; and a tension device configured to engage the second anchor so as to apply an anchor force between the tension member and the second anchor; wherein the tension device comprises a shaft comprising a proximal end, a distal end, and a lumen through which the tension member is insertable, and wherein the anchor force is applied by tensioning a portion of the tension member extending proximally of the tension device; wherein the tension device further comprises a tube slidably disposed over the shaft, a compression spring that is operably coupled with the shaft and the tube, and indicia that provides an indication of the anchor force applied between the tension member and the second anchor as the shaft is advanced distally through the tube. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A tension device for engaging a heart anchor system that is engaged with walls of a heart and for applying a force to the heart anchor system, the tension device comprising:
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a shaft having a proximal end, a distal end, and a lumen through which a tension member is insertable; a tube slidably disposed over the shaft; and a compression spring that is operably coupled with the shaft and the tube, wherein; the force is applied to the heart anchor system by tensioning a portion of the tension member that extends proximally of the tension device; and the tube comprises indicia that provides an indication of the force applied to the heart anchor system based on the shaft sliding relative to the tube; wherein; the heart anchor system includes a first anchor that is coupled with a first end of the tension member, the first anchor being configured for anchoring engagement with a first heart wall; the heart anchor system also includes a second anchor that is slidably coupled with the tension member, the second anchor having a variable mode that allows the second anchor to axially slide proximally and distally along the tension member and also having a set force mode that inhibits proximal movement of the second anchor along the tension member, the second anchor being configured for anchoring engagement with a second heart wall; and the force applied to the heart anchor system causes the first heart wall to move toward the second heart wall. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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Specification