Off-center tissue anchors
First Claim
1. Apparatus for delivery in a constrained state within a deployment tool, the apparatus comprising a tissue anchor, which comprises:
- a shaft;
a tissue-coupling element, which comprises a wire, which is shaped as an open loop having more than one turn when the tissue anchor is unconstrained by the deployment tool; and
a flexible elongate tension member, which includes (a) a distal portion that is fixed to a site on the open loop, (b) a proximal portion, which has a longitudinal segment that runs alongside at least a portion of the shaft, and (c) a crossing portion, which (i) is disposed between the distal and the proximal portions along the flexible elongate tension member, and (ii) crosses at least a portion of the open loop when the tissue anchor is unconstrained by the deployment tool,wherein the tissue anchor is configured to allow relative axial motion between the at least a portion of the shaft and the longitudinal segment of the proximal portion of the flexible elongate tension member when the tissue anchor is unconstrained by the deployment tool,wherein the longitudinal segment of the proximal portion of the flexible elongate tension member is coupled in sliding communication with the at least a portion of the shaft when the tissue anchor is unconstrained by the deployment tool, andwherein the tissue anchor comprises one or more annular elements, which are disposed around the at least a portion of the shaft, and couple the flexible elongate tension member in the sliding communication with the at least a portion of the shaft when the tissue anchor is unconstrained by the deployment tool.
2 Assignments
0 Petitions
Accused Products
Abstract
A tissue anchor (200, 258, 300) includes a shaft (122), a tissue-coupling element (128), and a flexible elongate tension member (202). The tissue-coupling element (128) includes a wire (150), which is shaped as an open loop (154) having more than one turn when the tissue anchor (200, 258, 300) is unconstrained. The tension member (202) includes a distal portion (204) that is fixed to a site (206) on the open loop (154), a proximal portion (208), which has a longitudinal segment (209) that runs alongside at least a portion (210) of the shaft (122), and a crossing portion (212), which (i) is disposed between the distal and the proximal N portions (204, 208) along the tension member (202), and (ii) crosses at least a portion of the open loop (154) when the tissue anchor (200, 258, 300) is unconstrained. The tissue anchor (200, 258, 300) is configured to allow relative axial motion between the at least a portion (210) of the shaft (122) and the longitudinal segment (209) of the proximal portion (208) of the tension member (202) when the tissue anchor (200, 258, 300) is unconstrained.
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Citations
34 Claims
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1. Apparatus for delivery in a constrained state within a deployment tool, the apparatus comprising a tissue anchor, which comprises:
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a shaft; a tissue-coupling element, which comprises a wire, which is shaped as an open loop having more than one turn when the tissue anchor is unconstrained by the deployment tool; and a flexible elongate tension member, which includes (a) a distal portion that is fixed to a site on the open loop, (b) a proximal portion, which has a longitudinal segment that runs alongside at least a portion of the shaft, and (c) a crossing portion, which (i) is disposed between the distal and the proximal portions along the flexible elongate tension member, and (ii) crosses at least a portion of the open loop when the tissue anchor is unconstrained by the deployment tool, wherein the tissue anchor is configured to allow relative axial motion between the at least a portion of the shaft and the longitudinal segment of the proximal portion of the flexible elongate tension member when the tissue anchor is unconstrained by the deployment tool, wherein the longitudinal segment of the proximal portion of the flexible elongate tension member is coupled in sliding communication with the at least a portion of the shaft when the tissue anchor is unconstrained by the deployment tool, and wherein the tissue anchor comprises one or more annular elements, which are disposed around the at least a portion of the shaft, and couple the flexible elongate tension member in the sliding communication with the at least a portion of the shaft when the tissue anchor is unconstrained by the deployment tool. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. Apparatus for delivery in a constrained state within a deployment tool, the apparatus comprising a tissue anchor, which comprises:
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a shaft; a tissue-coupling element, which comprises a wire, which is shaped as an open loop having more than one turn when the tissue anchor is unconstrained by the deployment tool; and a flexible elongate tension member, which includes (a) a distal portion that is fixed to a site on the open loop, (b) a proximal portion, which has a longitudinal segment that runs alongside at least a portion of the shaft, and (c) a crossing portion, which (i) is disposed between the distal and the proximal portions along the flexible elongate tension member, and (ii) crosses at least a portion of the open loop when the tissue anchor is unconstrained by the deployment tool, wherein the tissue anchor is configured to allow relative axial motion between the at least a portion of the shaft and the longitudinal segment of the proximal portion of the flexible elongate tension member when the tissue anchor is unconstrained by the deployment tool, wherein the tissue anchor comprises a head connected to a proximal portion of the shaft, wherein the head is shaped so as to define a passage in which the proximal portion of the flexible elongate tension member is slidably disposed, wherein the flexible elongate tension member comprises a locking stopper, which is axially fixed to the proximal or the crossing portion of the flexible elongate tension member, and wherein the locking stopper and the passage are sized and shaped such that the size and shape of the passage prevent proximal movement of the locking stopper past the passage. - View Dependent Claims (29, 30, 31, 32, 33, 34)
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Specification