Method and apparatus for meniscal repair
An inserter including a hollow elongated shaft extending along a central longitudinal axis and having a proximal end and a distal end with a lumen extending therethrough; a sharp point at the distal end of the hollow elongated shaft, the sharp point disposed eccentric to the longitudinal axis of the hollow elongated shaft; a handle at the proximal end of the hollow elongated shaft; and a drive shaft movably disposed within the lumen of the hollow elongated shaft.
1. An inserter, comprising:
a hollow elongated shaft extending along a central longitudinal axis and having a proximal end and a distal end with a lumen extending therethrough;
a sharp point at the distal end of the hollow elongated shaft, the sharp point disposed eccentric to the longitudinal axis of the hollow elongated shaft;
a handle at the proximal end of the hollow elongated shaft; and
a drive shaft movably disposed within the lumen of the hollow elongated shaft;
wherein at least one anchor is disposed within the lumen, the at least one anchor attached to a suture, wherein the anchor comprises:
an elongated cylindrical body having a distal end and a proximal end, a longitudinal axis extending between the distal end and the proximal end, and an outer surface offset from the longitudinal axis, the distal end having a distal slot opening on the outer surface of the body and extending from the distal end of the body proximally along the longitudinal axis of the body, and the proximal end having a proximal slot opening on the outer surface of the body and extending from the proximal end of the body distally along the longitudinal axis of the body;
the distal slot comprising a wide section and a narrow section, wherein the wide section has a width configured to slidably accommodate the suture in the wide section and the narrow section has a width configured to bind the suture in the narrow section, and further wherein the wide section is disposed distally of the narrow section.
2. The inserter of claim 1 , wherein the distal end of the hollow elongated shaft has an oblique face forming the sharp point.
3. The inserter of claim 1 , further comprising a lever extending from the handle and connected to the drive shaft.
4. The inserter of claim 3 , wherein actuating the lever advances the drive shaft through the lumen of the hollow elongated shaft.
5. The inserter of claim 1 , wherein moving the drive shaft distally through the lumen drives the at least one anchor toward the distal end of the hollow elongated shaft.
6. The inserter of claim 1 , further comprising a slot formed by a perimeter and extending along the hollow elongated shaft and into the lumen.
7. The inserter of claim 6 , further comprising a projection extending from the perimeter into the slot, along a length of the perimeter less than a full length of the perimeter, and back to the perimeter.
8. The inserter of claim 6 , wherein the slot extends toward, but not entirely through, the sharp point of the hollow elongated shaft.
9. The inserter of claim 8 , wherein the at least one anchor comprises a fin, wherein the fin extends into the slot.
10. An inserter, comprising:
a hollow elongated shaft extending along a central longitudinal axis and having a proximal end and a distal end with a lumen extending therethrough;
a sharp point at the distal end of the hollow elongated shaft, the sharp point disposed eccentric to the longitudinal axis of the hollow elongated shaft;
a handle at the proximal end of the hollow elongated shaft;
a drive shaft movably disposed within the lumen of the hollow elongated shaft;
a lever extending from the handle and connected to the drive shaft;
wherein actuating the lever advances the drive shaft through the lumen of the hollow elongated shaft; and
a tension wheel extending from the handle;
wherein at least one anchor is disposed within the lumen, the at least one anchor attached to a suture, wherein the anchor comprises:
an elongated cylindrical body having a distal end and a proximal end, a longitudinal axis extending between the distal end and the proximal end, and an outer surface offset from the longitudinal axis, the distal end having a distal slot opening on the outer surface of the body and extending from the distal end of the body proximally along the longitudinal axis of the body, and the proximal end having a proximal slot opening on the outer surface of the body and extending from the proximal end of the body distally along the longitudinal axis of the body;
the distal slot comprising a wide section and a narrow section, wherein the wide section has a width configured to slidably accommodate the suture in the wide section and the narrow section has a width configured to bind the suture in the narrow section, and further wherein the wide section is disposed distally of the narrow section.
11. The inserter of claim 10 , wherein the drive shaft is hollow.
12. The inserter of claim 11 , wherein the suture extends through the drive shaft and engages the tension wheel.
13. The inserter of claim 12 , wherein rotation of the tension wheel in a first direction increases tension on the suture and rotation of the tension wheel in a second direction decreases tension on the suture.
14. The inserter of claim 10 , wherein the tension wheel and the lever extend from opposing sides of the handle.
15. The inserter of claim 10 , further comprising a slot formed by a perimeter and extending along the hollow elongated shaft and into the lumen.
16. The inserter of claim 15 , further comprising a projection extending from the perimeter into the slot, along a length of the perimeter less than a full length of the perimeter, and back to the perimeter.
17. The inserter of claim 15 , wherein the at least one anchor comprises a fin, wherein the slot receives the fin.
18. The inserter of claim 17 , wherein the projection retards movement of the at least one anchor through the lumen of the hollow elongated shaft.
19. The inserter of claim 17 , wherein the slot extends toward, but not entirely through, the sharp point of the hollow elongated shaft.