Tissue shaping device
Devices for treating mitral valve regurgitation, including a distal expandable anchor, a proximal expandable anchor, and a fixed length connecting member extending from the proximal expandable anchor to the distal expandable anchor, where at least one of the proximal and distal anchors includes first and second arm segments that extend from one end of the device toward the connecting member and the other anchor when in a collapsed delivery configuration, and where the at least one of the proximal and distal anchors that comprises the first and second arm segments has an expanded configuration in which the first and second arm segments extend radially outwardly such that the first and second arm segments extend away from one another toward the connector, and meet one another at a location axially spaced from the end of the device.
1. A method of minimally-invasively treating mitral valve regurgitation, comprising:
advancing an intraluminal cardiac device in a collapsed configuration through a delivery device into a coronary sinus, the intraluminal cardiac device comprising a first expandable anchor, a second expandable anchor, and a connecting member extending between the first and second expandable anchors;
expanding the first expandable anchor and anchoring the first expandable anchor against movement in the coronary sinus;
expanding the second expandable anchor and anchoring the second expandable anchor against movement in the coronary sinus;
after the first and second expandable anchors are anchored against movement, delivering a lead and an electrode of an electrophysiology system into the coronary sinus and through the first and second expandable anchors; and
using the intraluminal cardiac device to change the geometry of the mitral valve annulus, bringing the leaflets of the mitral valve closer together, thereby reducing undesirable blood flow regurgitation of the mitral valve during the heart cycle.
2. The method of claim 1 , further comprising stabilizing the lead in the coronary sinus.
3. The method of claim 1 , further comprising stabilizing the electrode in the heart.
4. The method of claim 1 wherein delivering the lead and electrode through the first anchor comprises delivering the lead and electrode through the first anchor that has an apex of the first anchor extending radially away from the connecting member and from an inside curve of the coronary sinus.
5. The method of claim 4 wherein delivering the lead and electrode through the second anchor comprises delivering the lead and electrode through the second anchor that has an apex of the second anchor extending radially away from the connecting member and from an inside curve of the coronary sinus.
6. The method of claim 1 further comprising positioning the connecting member on an inside curve of the coronary sinus, away from the center of the coronary sinus.
7. The method of claim 1 , wherein using the intraluminal cardiac device comprises pulling proximally on the intraluminal cardiac device to change the geometry of the mitral valve annulus, bringing the leaflets of the mitral valve closer together, thereby reducing undesirable blood flow regurgitation of the mitral valve during the heart cycle.
8. The method of claim 1 , wherein the first anchor is a distal anchor and the second anchor is a proximal anchor, the method further comprising advancing the electrode further distally than the anchored distal anchor.