Anchoring to soft tissue
View Patent ↗Soft tissue anchors can be used in various surgical procedures, including pelvic floor reconstruction procedures. The anchors have one position that allows passage through the body and another position that inhibits passage of the anchors back through the soft tissue when a pull-back force is applied to the anchors by an implant, such as a surgical sling used for support of the urethra.
1. A sling assembly, comprising:
a sling, and
a soft tissue anchor comprising a central body element having a proximal sling engaging portion for receiving the sling and at least one radially extending arm disposed about the central body element, the at least one arm having first and second ends, a compliant middle portion, a first rigid portion between the first end and the compliant middle portion, and a second rigid portion between the compliant middle portion and the second end, the first end being pivotable about the distal end of the central body element and the second end unattached to the central body element and proximal of the first end.
2. The sling assembly of claim 1 , wherein the at least one arm has a first position proximate to the central body element and a second position pivoted outward from the central body element.
3. The sling assembly of claim 2 , wherein the at least one arm is biased in the second position.
4. The sling assembly of claim 1 , wherein the compliant middle portion allows the second portion to move closer to the first portion to form a collapsed position of the at least one arm in which an angle between the first and second portions is less than 90 degrees.
5. The sling assembly of claim 1 , wherein the central body element defines an aperture and a passageway through its center.
6. The sling assembly of claim 1 , wherein the sling engaging portion of the soft tissue anchor is one of an aperture, an eyelet, a lumen, and a groove.
7. The sling assembly of claim 1 , wherein at least some of the proximal portion of the soft tissue anchor includes threads.
8. The sling assembly of claim 1 , wherein the sling is one of a mesh sling, and a tape.
9. The sling assembly of claim 1 , wherein the soft tissue anchor is made of at least one bio-compatible material.
10. The sling assembly of claim 9 , wherein the at least one bio-compatible material is one of a metal and a polymer.
11. The sling assembly of claim 2 , wherein the first position permits passage of the anchor through soft tissue, and the second position inhibits passage of the soft tissue anchor back through the soft tissue.
12. The sling assembly of claim 1 , wherein the at least one arm is a plurality of arms.
13. The sling assembly of claim 4 , wherein the at least one arm is biased to be in the collapsed position.