SURGICAL AWL AND METHOD OF USING THE SAME
First Claim
1. A bone awl, comprisinga shaft having a first end and a second end opposed to the first end,a handle fixed to the second end, andan extension extending from the first end that includes a first cutting portion configured to form a hole in bone and a second cutting portion configured to form an internal screw thread in the bone along the surface of the hole.
1 Assignment
0 Petitions
Accused Products
Abstract
A bone awl is provided for preparing a bone for implantation with a screw. The awl includes a shaft having a first end and a second end opposed to the first end. A handle is fixed to the first end, and an extension extends from the second end. The extension includes a first cutting portion configured to form a hole in bone and a second cutting portion configured to form an internal screw thread in the bone along the surface of the hole. The awl also includes an axial through passage that extends from the handle to the first cutting portion and is dimensioned to receive a Kirshner pin therein.
-
Citations
17 Claims
-
1. A bone awl, comprising
a shaft having a first end and a second end opposed to the first end, a handle fixed to the second end, and an extension extending from the first end that includes a first cutting portion configured to form a hole in bone and a second cutting portion configured to form an internal screw thread in the bone along the surface of the hole.
-
13. A method of implanting a pedicle screw into a vertebra using a surgical awl comprises the following method steps:
-
providing the pedicle screw; providing the surgical awl, the surgical awl including a hollow body including a proximal end, and a distal end opposed to the proximal end, the proximal end including a handle, and the distal end including a first cutting portion configured to form a hole in bone and a second cutting portion configured to form an internal screw thread in the bone along the surface of the hole, and a detachable cap formed on the handle, a first Kirshner pin extending through the hollow body to the distal end; forming an incision through the skin overlying the vertebra; inserting the awl into the incision until the distal end contacts the vertebra; rotate the awl so that the first cutting portion forms a hole in the vertebra, and the second cutting portion forms an internal screw thread in the hole formed by the first cutting portion; removing the cap from a proximal end of the awl; removing the first Kirshner pin from the awl; inserting a second Kirshner pin through the awl and into the vertebra at the desired implantation location; removing the awl from the incision, leaving the second Kirshner pin in place; and implanting the pedicle screw in the pre-threaded drill hole of the vertebra by passing it along the second Kirshner pin and screwing the pedicle screw into the hole in the vertebra. - View Dependent Claims (14, 15, 16)
-
-
17. A method of using a surgical awl to form a tapped hole in bone comprises the following method steps:
-
providing the surgical awl, the surgical awl including a proximal end, and a distal end opposed to the proximal end, the distal end including a first cutting portion configured to form a hole in bone and a second cutting portion configured to form an internal screw thread in the bone along the surface of the hole; placing the distal end against a surface of the bone; rotating the awl so that the first cutting portion forms a hole in the bone; and after forming the hole in the bone, further rotating the awl so that the second cutting portion forms an internal screw thread in the hole formed by the first cutting portion.
-
Specification