Drill pin for fixation of ligaments using button/loop construct
A reconstruction system for ligament employing a button/loop construct with a drill pin. The drill pin has a shaft with a proximal and a distal end. A pin tip provided at the distal end of the shaft has a width greater than the shaft diameter. The pin tip helps cut a wider tunnel for fixation of ligaments/grafts in reconstructive surgeries. The shaft of the drill pin is provided with a laser marks for measurement of intraosseous length.
1. A drill pin, comprising:
a solid shaft extending along a longitudinal axis between a proximal end and a distal end;
a plurality of laser marks formed on an external surface of the solid shaft;
a suture eyelet located at the proximal end; and
a pin tip located at the distal end and including a width that is greater than the solid shaft,
wherein the pin tip gradually widens out and is adapted for cutting a tunnel in bone that is wider than the solid shaft,
wherein the pin tip is spade-shaped,
wherein the pin tip includes cutting surfaces that are 180° opposed.
2. The drill pin as recited in claim 1 , wherein the suture eyelet includes an elongated opening formed through the proximal end.
3. The drill pin as recited in claim 1 , wherein the drill pin is made of a metallic material and includes an electropolish finish.
4. The drill pin as recited in claim 3 , wherein the metallic material includes a stainless steel or a titanium alloy.
5. The drill pin as recited in claim 1 , wherein the plurality of laser marks are spaced at a predetermined length from the distal end.
6. The drill pin as recited in claim 1 , wherein the cutting surfaces each include a relief angle of 120°.
7. The drill pin as recited in claim 1 , wherein a diameter of the solid shaft is about 2.4 mm and the pin tip widens to about 3 mm.
8. The drill pin as recited in claim 1 , wherein the pin tip is configured to engage a drill bit that is separate from the drill pin.
9. The drill pin as recited in claim 1 , wherein the drill pin is part of a reconstruction system that includes a cannulated reamer.
10. The drill pin as recited in claim 9 , wherein the cannulated reamer is receivable over the solid shaft of the drill pin.
11. The drill pin as recited in claim 1 , wherein the pin tip includes first portions tapering outwardly from the solid shaft, second portions extending longitudinally and substantially parallel to the longitudinal axis, and third portions that are concave and taper inwardly before joining together at an apex of the pin tip.
12. The drill pin as recited in claim 11 , wherein distal sections of the third portions connect to the apex and are located distally of proximal sections of the third portions that connect to the second portions.
13. The drill pin as recited in claim 1 , wherein each of the plurality of laser marks are located within a distance from the distal end that is less than half of a total length of the drill pin.
14. The drill pin as recited in claim 1 , wherein a diameter at a cutting edge of the pin tip is about 3 mm.
15. The drill pin as recited in claim 1 , wherein a length of the pin tip is less than about 2% of a total length of the drill pin.
16. A drill pin, comprising:
a solid shaft extending along a longitudinal axis between a proximal end and a distal end;
a plurality of laser marks formed on an external surface of the solid shaft;
a suture eyelet located at the proximal end; and
a pin tip located at the distal end and including a width that is greater than the solid shaft,
wherein the pin tip gradually widens out and is adapted for cutting a tunnel in bone that is wider than the solid shaft,
wherein the pin tip is spade-shaped,
wherein the pin tip includes cutting surfaces that are 180° opposed,
wherein a length of the suture eyelet is about 2% of a total length of the drill pin.
17. A drill pin, comprising:
a solid shaft extending along a longitudinal axis between a proximal end and a distal end;
a plurality of laser marks formed on an external surface of the solid shaft;
a suture eyelet located at the proximal end; and
a pin tip located at the distal end and including a width that is greater than the solid shaft,
wherein the pin tip gradually widens out and is adapted for cutting a tunnel in bone that is wider than the solid shaft,
wherein the pin tip is spade-shaped,
wherein the pin tip includes cutting surfaces that are 180° opposed,
wherein the pin tip includes a first length that is less than a second length of the suture eyelet.