Tissue shaping device
In one embodiment, the present invention relates to a tissue shaping device adapted to be disposed in a vessel near a patient's heart to reshape the patient's heart. Such tissue shaping device can include an expandable proximal anchor; a proximal anchor lock adapted to lock the proximal anchor in an expanded configuration; an expandable distal anchor; a distal anchor lock adapted to lock the distal anchor in an expanded configuration; and a connector disposed between the proximal anchor and the distal anchor, the connector having a substantially non-circular cross-section.
1. A tissue shaping device, comprising:
a proximal anchor;
a distal anchor;
a first connector extending between the proximal anchor and the distal anchor, the first connector having, in a cross section orthogonal to a longitudinal axis of the first connector, a non-circular profile that includes a flat surface; and
a second connector extending between the proximal anchor and the distal anchor.
2. The tissue shaping device of claim 1 , wherein, in the cross section, the non-circular profile includes a second flat surface.
3. The tissue shaping device of claim 2 , wherein the first connector, in the cross section, has a rectangular profile.
4. The tissue shaping device of claim 1 , wherein the first connector has, in every cross section that is orthogonal to the longitudinal axis of the first connector between the proximal and distal anchors, a non-circular profile.
5. The tissue shaping device of claim 4 wherein, in every cross section, the non-circular profile includes a flat surface.
6. The tissue shaping device of claim 5 wherein in every cross section, the non-circular profile includes a second flat surface.
7. The tissue shaping device of claim 6 , wherein in every cross section, the non-circular profile is rectangular.
8. The tissue shaping device of claim 5 , further comprising a lock adapted to lock the distal anchor in a locked configuration, wherein the lock comprises a bend in the first connector.
9. The tissue shaping device of claim 8 , wherein the lock further comprises a bend in the second connector.
10. The tissue shaping device of claim 1 , wherein the second connector has, in a cross section that is orthogonal to a longitudinal axis of the second connector, a circular profile.
11. The tissue shaping device of claim 10 , wherein the second connector has, in every cross section that is orthogonal to the longitudinal axis of the second connector, a circular profile.
12. The device of claim 1 , wherein the first and second connectors each have a fixed length between the distal and proximal anchors.
13. A tissue shaping device adapted to be disposed in a vessel and reshape a patient's heart, comprising:
an expandable first anchor having an expanded configuration and a collapsed configuration;
an expandable second anchor having an expanded configuration and a collapsed configuration; and
a connector disposed between the first anchor and the second anchor,
wherein at least one of the first and second anchors comprises a wire that has a collapsed position when the respective anchor is in the collapsed configuration and an expanded position when the respective anchor is in the expanded configuration,
wherein the wire comprises a strain relief portion disposed at an end of the anchor, the strain relief portion comprising a bend about which the wire deforms when the respective anchor deforms from the expanded configuration to the collapsed configuration, wherein in the strain relief portion the wire extends below an axis of the connector.
14. The tissue shaping device of claim 13 , wherein the wire, after extending below the axis of the connector, extends back towards the axis of the connector.
15. The tissue shaping device of claim 14 , wherein after extending back towards the axis of the connector, the wire extends above the axis of the connector.
16. The tissue shaping device of claim 13 , further comprising a first lock to lock the first anchor in the expanded configuration.
17. The tissue shaping device of claim 13 , further comprising a second lock to lock the second anchor in the expanded configuration.
18. The tissue shaping device of claim 13 , wherein the first and second anchors each comprise a wire that has a collapsed position when the respective anchor is in the collapsed configuration and an expanded position when the respective anchor is in the expanded configuration, wherein each of the wires comprise a strain relief portion disposed at an end of the anchor, the strain relief portion comprising a bend about which the wire deforms when the respective anchor deforms from the expanded configuration to the collapsed configuration, wherein in the strain relief portions the wires extend below an axis of the connector.
19. The tissue shaping device of claim 13 , wherein the strain relief portion comprises a bend in the wire.