Implantable tissue anchors, kits that include a tissue anchor, and related methods of treatment
Example implantable tissue anchors, kits that include an implantable tissue anchor, and associated methods are described. An example implantable tissue anchor is moveable between a first, expanded configuration and a second, compressed configuration. The implantable tissue anchor has a first end, a second end, and a main body. The main body defines a first arm, a second arm, a first plurality of recesses on the first arm, a first plurality of barbs on the first arm, a second plurality of recess on the second arm, and a second plurality of barbs on the second arm. The first arm and the second arm define a first closed loop and a first passageway that extends through the main body when the implantable tissue anchor is in the first, expanded configuration.
1. An implantable tissue anchor moveable between a first, expanded configuration and a second, compressed configuration, the implantable tissue anchor comprising:
a first end, a second end, a lengthwise axis, and a main body, the main body defining a first arm, a second arm, a first plurality of recesses on the first arm, a first plurality of barbs on the first arm, a second plurality of recesses on the second arm, and a second plurality of barbs on the second arm, each of the first end and the second end disposed on the lengthwise axis, the lengthwise axis disposed between the first plurality of barbs and the second plurality of recesses in the first, expanded configuration, the main body having a first length along the lengthwise axis in the first, expanded configuration and a second length along the lengthwise axis in the second, compressed configuration that is greater than the first length;
the first arm and the second arm defining a first closed loop and a first passageway extending through the main body when said implantable tissue anchor is in the first, expanded configuration, each barb of the first plurality of barbs extending from the first arm and away from the first passageway;
a first barb of the first plurality of barbs partially disposed within a first recess of the second plurality of recesses when said implantable tissue anchor is in the second, compressed configuration; and
a first barb of the second plurality of barbs partially disposed within a first recess of the first plurality of recesses when said implantable tissue anchor is in the second, compressed configuration.
2. The implantable tissue anchor of claim 1 , wherein the main body defines a cutting tip on the first end.
3. The implantable tissue anchor of claim 1 , wherein each of the first plurality of barbs and the second plurality of barbs includes less than sixteen barbs.
4. The implantable tissue anchor of claim 1 , wherein each of the first plurality of recesses and the second plurality of recesses includes less than sixteen recesses.
5. The implantable tissue anchor of claim 1 , wherein the main body is formed of high-density polyethylene.
6. The implantable tissue anchor of claim 1 , further including an echogenic material disposed within the main body.
7. The implantable tissue anchor of claim 1 , wherein the main body defines a proximal terminus, and a distal terminus, the first and second arms terminating in the proximal terminus and the distal terminus.
8. The implantable tissue anchor of claim 7 , wherein the proximal terminus is a structural junction of two portions of a monolithic structure.
9. The implantable tissue anchor of claim 7 , wherein the distal terminus is a structural junction of two portions of a monolithic structure.
10. The implantable tissue anchor of claim 1 , wherein the main body defines a third arm, a fourth arm, a third plurality of recesses on the third arm, a third plurality of barbs on the third arm, a fourth plurality of recesses on the fourth arm, and a fourth plurality of barbs on the fourth arm.
11. The implantable tissue anchor of claim 10 , wherein the third arm and the fourth arm define a second closed loop and a second passageway that extends through the main body when said implantable tissue anchor is in the first, expanded configuration.
12. The implantable tissue anchor of claim 10 , wherein a first barb of the third plurality of barbs is partially disposed within a first recess of the fourth plurality of recesses when said implantable tissue anchor is in the second, compressed configuration; and
a first barb of the fourth plurality of barbs is partially disposed within a first recess of the third plurality of recesses when said implantable tissue anchor is in the second, compressed configuration.
13. The implantable tissue anchor of claim 10 , wherein the main body defines a proximal terminus, an intermediate terminus, and a distal terminus, the first and second arms terminating in the proximal terminus and the intermediate terminus, and the third and fourth arms terminating in the intermediate terminus and the distal terminus.
14. The implantable tissue anchor of claim 1 , wherein the first end is a blunt end and the second end is a blunt end.
15. An implantable tissue anchor moveable between a first, expanded configuration and a second, compressed configuration, the implantable tissue anchor comprising:
a first end, a second end, a lengthwise axis, and a main body, the main body defining a first arm, a second arm, a third arm, a fourth arm, a first plurality of recesses on the first arm, a first plurality of barbs on the first arm, a second plurality of recesses on the second arm, a second plurality of barbs on the second arm, a third plurality of recesses on the third arm, a third plurality of barbs on the third arm, a fourth plurality of recesses on the fourth arm, and a fourth plurality of barbs on the fourth arm, each of the first end and the second end disposed on the lengthwise axis, the lengthwise axis disposed between the first plurality of barbs and the second plurality of recesses in the first, expanded configuration, the main body having a first length along the lengthwise axis in the first, expanded configuration and a second length along the lengthwise axis in the second, compressed configuration that is greater than the first length;
the first arm and the second arm defining a first closed loop and a first passageway extending through the main body when said implantable tissue anchor is in the first, expanded configuration, each barb of the first plurality of barbs extending from the first arm and away from the first passageway;
the third arm and the fourth arm defining a second closed loop and a second passageway extending through the main body when said implantable tissue anchor is in the first, expanded configuration;
a first barb of the first plurality of barbs partially disposed within a first recess of the second plurality of recesses when said implantable tissue anchor is in the second, compressed configuration;
a first barb of the second plurality of barbs partially disposed within a first recess of the first plurality of recesses when said implantable tissue anchor is in the second, compressed configuration;
a first barb of the third plurality of barbs partially disposed within a first recess of the fourth plurality of recesses when said implantable tissue anchor is in the second, compressed configuration; and
a first barb of the fourth plurality of barbs partially disposed within a first recess of the third plurality of recesses when said implantable tissue anchor is in the second, compressed configuration.
16. The implantable tissue anchor of claim 15 , wherein each of the first plurality of barbs, the second plurality of barbs, the third plurality of barbs, and the fourth plurality of barbs includes less than sixteen barbs.
17. The implantable tissue anchor of claim 15 , wherein each of the first plurality of recesses, the second plurality of recesses, the third plurality of recesses, and the fourth plurality of recesses includes less than sixteen recesses.
18. The implantable tissue anchor of claim 15 , further including an echogenic material disposed within the main body.