Osseous pin, guide sleeve therefor, extraction member therefor and kit
AssigneeSwemac Innovation AB
InventorHenrik Hansson
Life of this patent
Estimating the term…
Abstract
The present invention relates to an osseous pin (1) for bone fracture fixation. The pin comprises a threaded front section (2) and an unthreaded rear section (3). The threaded front section is configured with two or more kerfs (4) to facilitate breaking of the pin at any one of said kerfs. The present invention also relates to a guide sleeve for use in insertion of the osseous pin (1) into bone fragments at a bone fracture and breaking of said pin at the kerf (4) closest to the entrance site of the pin into the bone fragments. The present invention also relates to an extraction member for use in extraction of the osseous pin (1) from bone fragments at a healed bone fracture and a kit, comprising said components.
Claims12
1-12. (canceled)
Osseous pin (1) for bone fracture fixation, wherein the pin (1) comprises a threaded front section (2) and an unthreaded rear section (3), which threaded front section (2) is configured to be inserted into a bone fragment at a bone fracture through an entrance site of the bone fragment, and wherein the threaded front section (2) of the pin (1) comprises:
- a forward end (6) to be inserted into the bone fragment;
- and
- two or more kerfs (4) arranged distally of the forward end (6) and configured as interruptions of a threading (5) of the front section (2), which interruptions have a diameter that is lesser than a diameter of the threading (5), wherein the two or more kerfs (4) are arranged at a distance of 1-5 mm between respective two kerfs (4), wherein the diameter of the threading (5) of the threaded front section (2) of the pin (1) is equal to the diameter of the unthreaded rear section (3) of the pin (1) and wherein the kerfs (4) are configured to facilitate breaking of the pin at the entrance surface when in use.
Dependencies are inferred from the claim text.