Plate holding bone forceps and method of use

Patent metadata

Field	Value
Publication number	US-9642641-B2
Application number	US-200913000228-A
Country	US
Kind code	B2
Filing date	Jul 29, 2009
Priority date	Jul 29, 2008
Publication date	May 9, 2017
Grant date	May 9, 2017

Abstract

A device for the positioning of a bone plate against a bone comprises first and second arms pivotally connected at a first joint, distal ends of the first and second arms defining a gripping surface for gripping the bone therebetween, proximal portions of the first and second arms extending in a first plane. An extension member couples to the first and second arms at the first joint and includes a first section extending distally from the first joint parallel to the first plane and a second section extending distally from the first section angled relative to the first section so that when the first and second arms are in a desired configuration gripping the bone, the second section extends parallel to the bone. A compression mechanism couples to the second section and includes a compression member and a coupling member being movable toward and away from the second section.

First claim

What is claimed is:

1. A device for the positioning of a bone plate against a target portion of bone, comprising:
first and second arms pivotally connected to one another at a first joint, a distal end of each of the first and second arms defining a gripping surface configured to grip a target portion of bone therebetween, portions of the first and second arms proximal of the first joint extending substantially in a first plane;
an extension member coupled to the first and second arms at the first joint, the extension member including a first section extending distally from the first joint substantially parallel to the first plane and a second section extending distally from the first section angled relative to the first section so that when the first and second arms are in a desired configuration gripping a target portion of bone, the second section extends substantially parallel to a surface of the target portion of bone;
a compression mechanism coupled to the second section, the compression mechanism including a coupling member coupled between the second section of the extension member and a compression plate including a distal surface configured to engage a proximal surface of a bone plate to be coupled to the bone, the coupling member being movable relative to the second section of the extension member to move the compression plate toward and away from the second section.

2. The device of claim 1 , wherein the compression plate is coupled to the coupling member via a second joint permitting angulation of the compression plate relative to the second section.

3. The device of claim 2 , wherein the second joint is a ball joint.

4. The device of claim 1 , wherein the coupling member is a set screw inserted through a threaded bore formed through the second section so that rotation of the set screw causes a corresponding movement of the compression plate relative to the second section.

5. The device of claim 3 , wherein the ball joint allows the compression plate to rotate relative to the second section to adjust for an angulation relative to the second section of a bone plate received on the target portion of bone.

6. The device of claim 1 , wherein the second section is angled so that, when the first and second arms are in the desired configuration gripping the target portion of bone, the second section extends substantially parallel to a longitudinal axis of the target portion of bone.

7. The device of claim 1 , wherein a proximal end of each of the first and second arms comprises a gripping handle, and wherein a proximal portion of the first arm includes a first toothed arc extending toward a second toothed arc of the proximal portion of the second arm, the first and second toothed arcs being positioned so that, when the first and second arms are rotated about the joint toward one another, the first and second arcs overlie one another preventing the first and second arms from spreading apart from one another.

8. The device of claim 1 , wherein the compression plate is moveable by the coupling member between a plate receiving position in which, when the first and second arms are in a desired configuration gripping a target portion of bone, the distal surface of the compression plate is spaced from a surface of the target portion of bone by a distance greater than a thickness of a bone plate to be coupled to the target portion of bone and a plate locking position in which the distal surface is moved toward a surface of the bone relative to the plate receiving position to clamp a plate received thereunder to the target portion of bone.

Assignees

• Fernandez Dell'Oca Alberto A
• Depuy Synthes Products Inc

Inventors

• Fernandez Dell'Oca Alberto A

Classifications

• A61B17/282 Primary

  Jaws · CPC title

• A61B17/80

  Cortical plates {, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates} · CPC title

• A61B17/8866

  for gripping or pushing bones, e.g. approximators (joint distractors A61B17/025) · CPC title

• A61B17/808

  Instruments for holding or positioning bone plates, or for adjusting screw-to-plate locking mechanisms · CPC title