Adjustable height focal tissue deflector
View Patent ↗A tissue shaping device adapted to reshape target tissue adjacent to a lumen. In some embodiments, the device includes an expandable and contractable anchor, with the anchor having an adjustable height anchoring portion adapted to engage a wall of the lumen in at least first and second anchor heights, the anchoring portion being further adapted to be changed from the first anchor height to the second anchor height by a substantially proximally or a substantially distally directed actuation force. The invention is also a tissue shaping system including a tissue shaping device and a tool for adjusting the height of an anchor of the device. The invention also includes methods of using such tissue shaping devices and systems.
1. A tissue shaping device adapted to reshape target tissue, comprising:
an expandable anchor and a connector element extending from the expandable anchor;
a delivery catheter in which the expandable anchor and the connector are delivered to a lumen within a patient, wherein the expandable anchor has a collapsed delivery configuration within the delivery catheter; and
a lock that is adapted to lock the expandable anchor in one of a plurality of locked configurations within a lumen, wherein the lock comprises a first lock element and a second lock element which are movable relative to one another to lock the first lock element and the second lock element in a locked configuration to thereby lock the expandable anchor in one of the plurality of locked configurations.
2. The device of claim 1 wherein the plurality of locked configurations are locked and expanded configurations.
3. The device of claim 1 wherein the lock is further adapted to lock the expandable anchor in a plurality of locked configurations in the absence of bodily forces acting on the expandable anchor.
4. The device of claim 1 wherein the expandable anchor comprises a bent wire when the expandable anchor is in each of the plurality of locked configurations.
5. The device of claim 4 wherein in each of the plurality of locked configurations the bent wire has a configuration which is different from a configuration of each of the other plurality of locked configurations.
6. The device of claim 1 wherein the expandable anchor comprises the first lock element and the connector element comprises the second lock element.
7. The device of claim 6 wherein the second lock element comprises a plurality of discrete locking features to lock the expandable anchor in the plurality of locked configurations.
8. The device of claim 1 wherein the delivery catheter engages the expandable anchor to lock the expandable anchor in one of the plurality of locked configurations.
9. The device of claim 8 wherein the lock comprises a first lock element and a second lock element, and wherein the delivery catheter engages the expandable anchor to move the first lock element relative to the second lock element to thereby lock the expandable anchor in one of the plurality of locked configurations.
10. The device of claim 9 wherein the second lock element comprises a plurality of discrete locking features to lock the expandable anchor in one of the plurality of locked configurations.
11. The device of claim 10 wherein the anchor comprises the first lock element and the connector element comprises the second lock element.
12. The device of claim 1 wherein the device further comprises a second expandable anchor, wherein the connector element connects the first and second expandable anchors.
13. The device of claim 12 further comprising a second lock that is adapted to lock the second expandable anchor in one of a plurality of locked configurations.
14. The device of claim 12 further comprising a second lock that is adapted to lock the second expandable anchor in only one locked configuration.
15. A method of reshaping target tissue adjacent to a lumen, comprising:
delivering an expandable anchor and a connector element extending from the expandable anchor within a delivery catheter to a target location within a lumen, wherein the expandable anchor is delivered in a collapsed delivery configuration;
deploying the expandable anchor from the delivery catheter;
locking the expandable anchor in one of a plurality of locked configurations in the lumen, wherein the locking step comprises moving a first lock element relative to a second lock element to engage the first and second lock element in a locked configuration to thereby lock the expandable anchor in one of the plurality of locked configurations.
16. The method of claim 15 wherein deploying the expandable anchor from the delivery catheter comprises allowing the expandable anchor to expand from the delivery catheter.
17. The method of claim 15 wherein the expandable anchor comprises the first lock element and the connector element comprises the second lock element.
18. The method of claim 17 wherein the second lock element comprises a plurality of discrete locking features such that moving the first lock element relative to the second lock element comprises moving the first lock element relative to the plurality of discrete locking features.
19. The method of claim 15 wherein locking the expandable anchor in one of a plurality of locked configurations comprises engaging the expandable anchor with the delivery catheter to move a first locking element with respect to a second locking element to thereby engage the first and second locking elements in a locked configuration to thereby lock the expandable anchor in one of the plurality of locked configurations.
20. The method of claim 19 wherein engaging the expandable anchor with the delivery catheter comprises applying a distally directed force on the expandable anchor with the delivery catheter.
21. The method of claim 15 further comprising adjusting the configuration of the expandable anchor after the deploying step and before the locking step.
22. The method of claim 21 wherein adjusting step comprises applying an actuating force on the expandable anchor with the delivery catheter.
23. A tissue shaping device adapted to reshape target tissue, comprising:
a radially expandable anchor and a connector element extending from the expandable anchor;
a delivery catheter in which the radially expandable anchor and the connector are delivered to a lumen within a patient, wherein the radially expandable anchor has a radially collapsed delivery configuration within the delivery catheter; and
a lock that is adapted to lock the radially expandable anchor in one of a plurality of locked configurations within a lumen.
24. The device of claim 23 wherein the plurality of locked configurations are locked and radially expanded configurations.
25. The device of claim 23 wherein the lock is further adapted to lock the radially expandable anchor in a plurality of locked configurations in the absence of bodily forces acting on the expandable anchor.
26. The device of claim 23 wherein the radially expandable anchor comprises the first lock element and the connector element comprises the second lock element.
27. The device of claim 26 wherein the second lock element comprises a plurality of discrete locking features to lock the expandable anchor in the plurality of locked configurations.
28. The device of claim 23 wherein the device further comprises a second expandable anchor, wherein the connector element connects the first and second expandable anchors.