Systems and methods for fixing soft tissue
Embodiments of systems and methods for fixing soft tissue are disclosed herein. In some embodiments, soft tissue may be fixed to an attachment surface (such as bone, other soft tissue, other implants, or allograft or xenograft materials) by providing a helical suture in the soft tissue, wherein the soft tissue has a longitudinal axis along which the soft tissue undergoes tension under normal physiological conditions, and wherein a longitudinal axis of the helical suture in the soft tissue is oriented parallel to the longitudinal axis of the soft tissue; and securing the helical suture to an attachment surface.
1. An insertion instrument, comprising: a needle assembly having a helix-shaped needle and a body; a slide component in which the body of the needle assembly is at least partially disposed; a trigger lever coupled to the slide component; and a rear handle, wherein linearly translating the trigger lever toward the rear handle causes translation of the slide component rearward and causes the helix-shaped needle to rotate, wherein the slide component is configured such that translation of the slide component causes rotation of the needle assembly.
2. The insertion instrument of claim 1 , wherein the helix-shaped needle comprises at least two turns, wherein a turn is defined as 360 degrees.
3. The insertion instrument of claim 1 , wherein the helix-shaped needle comprises a tip and a recess located along only a portion of a length of the helix-shaped needle.
4. The insertion instrument of claim 3 , further comprising a suture disposed within the recess.
5. The insertion instrument of claim 3 , wherein the helix-shaped needle further comprises a hook located within or adjacent to the recess for securing suture material within the recess.
6. The insertion instrument of claim 1 , wherein the helix-shaped needle has a turn angle between 20 degrees and 60 degrees.
7. The insertion instrument of claim 6 , wherein the helix-shaped needle has a turn angle of approximately 45 degrees.
8. An insertion instrument, comprising:
a needle assembly having a helix-shaped needle and a body;
a slide component in which the body of the needle assembly is at least partially disposed;
a trigger lever coupled to the slide component;
a rear handle, wherein linearly translating the trigger lever toward the rear handle causes the helix-shaped needle to rotate; and
a gripping portion coupled to the trigger lever, wherein rotating the trigger lever around a longitudinal axis of the helix-shaped needle causes the gripping portion to close.
9. The insertion instrument of claim 8 , wherein linearly translating the trigger lever toward the rear handle causes the gripping portion to linearly translate toward the rear handle.
10. The insertion instrument of claim 8 , wherein the helix-shaped needle does not translate with reference to the rear handle when the helix-shaped needle is rotated.