Traction pin assemblies, components, systems, and methods
Example embodiments provide traction pin assemblies, components, systems, and methods. An example traction pin in assembly comprises a pin insertable into bone tissue to stabilize the bone tissue. The traction pin comprises a shaft extending between an end of the traction pin and a tip of the traction pin. The end of the traction pin is couplable to a driver that is operable to rotate the pin. The assembly may also comprise an adapter that is couplable to the driver to axially retain the traction pin relative to the driver. The assembly may also comprise a guide that defines a passage through which a portion of the shaft of the traction pin extends and provides a surface for gripping the guide. The surface has a larger surface area than a surface of the portion of the shaft extending through the guide.
1 . A traction pin assembly, the traction pin assembly comprising:
a traction pin insertable into bone tissue to stabilize the bone tissue, the traction pin including a shaft that extends between an end of the traction pin and a tip of the traction pin, the end of the traction pin couplable to a driver operable to rotate the traction pin and the tip of the traction pin having a diamond shape;
an adapter through which a first portion of the shaft of the traction pin extends, the adapter slidably disposed on the shaft of the traction pin between the tip of the traction pin and the end of the traction pin, and the adapter couplable to the driver to axially retain the traction pin relative to the driver; and
a guide coupled to the traction pin between the adapter and the tip of the traction pin, the guide defining a passage through which a second portion of the shaft of the traction pin extends and comprising a surface to enable gripping of the guide, the surface having a larger surface area than a surface of the second portion of the shaft, the guide removably coupled to the traction pin while the adapter remains coupled to the traction pin and the driver.
2 . The traction pin assembly of claim 1 , wherein the guide comprises a first half and a second half pivotably coupled together with a hinge.
3 . The traction pin assembly of claim 2 , wherein the hinge separates the guide into a first portion of the guide on one side of the hinge and a second portion of the guide on an opposing side of the hinge.
4 . The traction pin assembly of claim 3 , wherein:
a first section of the first half of the guide and a first section of the second half of the guide form the first portion of the guide;
a second section of the first half of the guide and a second section of the second half of the guide form the second portion of the guide; and
the second section of the first half and the second section of the second half of the guide are coupled to the hinge such that movement of the second section of the first half and the second section of the second half in a first direction pivots the first section of the first half and the first section of the second half in a second direction opposite the first direction.
5 . The traction pin assembly of claim 3 , wherein at least a portion of each of the first half and the second half of the guide comprises at least one tab to limit an amount by which the first half and the second half of the guide can pivot towards each other.
6 . The traction pin assembly of claim 1 , wherein one or more surfaces of the guide that define the passage engage one or more surfaces of the shaft of the traction pin to at least partially axially retain the guide relative to the traction pin.
7 . The traction pin assembly of claim 1 , wherein the end of the traction pin has a width that is greater than a width of the shaft of the traction pin.
8 . The traction pin assembly of claim 1 , wherein the adapter defines a recess into which a locking pin of the driver is receivable to axially lock the adapter relative to the driver.
9 . The traction pin assembly of claim 8 , wherein the recess extends circumferentially around the adapter and is configured to lock the adapter with the driver in any rotational orientation relative to the driver.
10 . The traction pin assembly of claim 1 , further comprising a cap coupled to the traction pin to cover the tip of the traction pin.
11 . The traction pin assembly of claim 10 , wherein the cap includes a blunt end.
12 . The traction pin assembly of claim 1 , comprising:
a cap coupled to the traction pin to cover the tip of the traction pin; and
the traction pin assembly packaged in a pre-assembled state with the adapter, the guide, and the cap coupled with the traction pin.
13 . A method, comprising:
providing an apparatus, including:
a traction pin insertable into bone tissue to stabilize the bone tissue, the traction pin including a shaft that extends between an end of the traction pin and a tip of the traction pin, the end of the traction pin couplable to a driver operable to rotate the traction pin; and
an adapter through which a first portion of the shaft of the traction pin extends, the adapter slidably disposed on the shaft of the traction pin between the tip of the traction pin and the end of the traction pin, and the adapter couplable to the driver to axially retain the traction pin relative to the driver;
coupling a guide to the traction pin between the adapter and the tip of the traction pin, wherein the guide comprises a first half and a second half pivotably coupled together with a hinge, wherein the hinge separates the guide into a first portion of the guide on one side of the hinge and a second portion of the guide on an opposing side of the hinge, and wherein at least a portion of each of the first half and the second half of the guide comprises at least one tab to limit an amount by which the first half and the second half of the guide can pivot towards each other: and
inserting the traction pin into tissue.
14 . The method of claim 13 , comprising:
coupling a cap with the traction pin to cover the tip of the traction pin.