Bone fixation system
AssigneeTriage Medical, Inc.
InventorsVictor V. Cachia, Gerard von Hoffmann, Brad S. Culbert
Life of this patent
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Abstract
Disclosed is a bone fixation device of the type useful for connecting soft tissue or tendon to bone or for connecting two or more bones or bone fragments together. The device comprises an elongate body having a distal anchor thereon. A proximal anchor is axially movably disposed with respect to the distal anchor, to accommodate different bone dimensions and permit appropriate tensioning of the fixation device. In one embodiment, the fixation device is optimized for construction from a biocompatible metal such as titanium, and the proximal anchor is removable to permit removal of the fixation device.
Claims60
A fixation pin for fixing bone to bone or other tissue to bone, comprising:
- A tubular body, having a proximal end and a distal end;
- At least two slots in the tubular body, extending proximally from the distal end to define at least a first and a second axially extending lever arms;
- A proximally facing retention surface carried by each lever arm;
- A thread on the body, proximal to the lever arms, for removably carrying a proximal anchor;
- and
- A proximal anchor carried by the body, comprising an aperture for receiving the tubular body and a collar for seating against a tissue surface;
- Wherein the first and second retention surfaces are laterally movable between an implantation crossing profile and a deployed crossing profile.
A method of fixing a first material to bone, comprising the steps of:
- Providing a pin having a distal anchor and at least one proximal break point;
- Advancing the distal anchor through the first material and into the bone;
- Advancing a distal end of a guide wire through the first material and into the bone and retracting the distal end of the guide wire into a distal portion of a bore that extends longitudinally through the pin;
- Advancing a proximal anchor distally along the pin to secure the first material to the bone;
- and
- Applying lateral pressure on a proximal portion of the pin to break the pin at the break point.
A fixation pin for fixing a first material to bone, comprising:
- An elongate tubular body, having a proximal end and a distal end;
- A plurality of deflectable barbs carried by the distal end;
- A thread on the tubular body, in between the proximal end and the distal end;
- A break point on the tubular body, proximal to at least a portion of the thread;
- and
- A rotational coupling on the pin, for coupling to a tool.
A fixation pin for fixing a first material to bone, comprising:
- An elongate tubular body, having a proximal end and a distal end;
- A plurality of deflectable barbs carried by the distal end;
- A thread on the tubular body, in between the proximal end and the distal end;
- A break point on the tubular body, proximal to at least a portion of the thread;
- and
- wherein the body includes a bore that extends longitudinally through the body from the proximal end to the distal end, the bore having a first portion at the distal end and a second portion located adjacent the first portion, the second portion having a diameter smaller than the first portion.
A method of fixing a first piece of bone to a second piece of bone, comprising the steps of:
- providing a pin having at least one laterally moveable distal anchor;
- advancing the distal anchor through the first piece of bone and into the second piece of bone while the distal anchor is permitted to move radially inwardly as needed;
- advancing a proximal anchor distally along the pin to secure the first piece of bone to the second piece of bone;
- and
- moving a wire axially through a lumen to resist radial inward deflection of the distal anchor, thereby locking the distal anchor and engaging the lumen to prevent distal migration of the wire.
Dependencies are inferred from the claim text.