ORTHOPEDIC PLATES FOR USE IN CLAVICLE REPAIR AND METHODS FOR THEIR USE

• US 20140296924A1
• Filed: 03/31/2014
• Published: 10/02/2014
• Est. Priority Date: 01/28/2005
• Status: Active Grant

• Current Assignee: Wright Medical Technology Incorporated (Stryker Corporation)
• Original Assignee: OrthoHelix Surgical Designs, Inc. (Stryker Corporation)
• Inventors: Kay, David B., Strnad, Lee A., Ducharme, Dustin, Wynkoop, G. Martin
• Granted Patent: US 9,259,251 B2
• Time in Patent Office: Days
• US Class Current: 606/289
• CPC Class Codes: A61B 17/56 Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
• CPC Class Codes: A61B 17/8004 with means for distracting or compressing the bone or bones
• CPC Class Codes: A61B 17/8014 the extension or compression force being caused by interaction of the plate hole and the screws
• CPC Class Codes: A61B 17/8057 the interlocking form comprising a thread
• CPC Class Codes: A61B 17/8061 specially adapted for particular bones A61B17/70 and A61B17/74 take precedence
• CPC Class Codes: A61B 17/8085 with pliable or malleable elements or having a mesh-like structure, e.g. small strips A61B17/8071, A61B17/8076 take precedence
• CPC Class Codes: A61B 17/885 Tools for expanding or compacting bones or discs or cavities therein A61B17/8805, A61B17/7097 take precedence

Abstract

The present invention relates to a series of orthopedic plates for use in repair of a bone. The plate has a Y-shaped profile or an X-shaped profile which includes an elongate central trunk with a complex contour and either one or two terminal pairs of arms that have a first arm and a second arm that form differing angles and lengths relative to the trunk portion of the plate. The arms include locking screw holes where the screws converge toward each other to provide for multiplanar fixation but which do not impinge.

Claims

1. A surgical plate comprising:

a Y-shaped plate having an inferior surface and a superior surface, the plate consisting of a trunk and a pair of a first arm and a second arm,

the trunk having a linear medial longitudinal axis along the superior surface extending between a first and a second end;

the first arm having a first arm linear medial axis and an ear with at least one screw hole defining a first screw axis, the first ear being attached to the trunk by a linking section having a waist, a first angle being defined by an intersection of the medial longitudinal axis of the trunk with the first arm linear medial axis, and a first length being defined by a line from a center of the first arm screw hole along the first arm linear medial axis to the medial longitudinal axis of the trunk, and,

the second arm having a second arm linear medial axis and a second ear with at least one second screw hole defining a second screw axis, the second ear being attached to the trunk by a linking section having a waist, a second angle being defined by an intersection of the medial longitudinal axis of the trunk with the second arm linear medial axis, and a second length being defined by a line from a center of the second arm screw hole along the second arm linear medial axis to medial longitudinal axis of the trunk, and the first angle and the first length being different from the second angle and the second length whereby the first screw axis and the second screw axis converge toward the inferior side of the plate but do not intersect.

2. The surgical plate as set forth in claim 1, where the intersection of the medial longitudinal axis of the trunk with the first arm linear medial axis is the same intersection as the intersection of the medial longitudinal axis of the trunk with the second arm linear medial axis.

3. The surgical plate as set forth in claim 2, wherein the intersection of the first arm and the intersection of the second arm are the same intersection.

4. A surgical plate as set forth in claim 1, further including a first locking screw and a second locking screw and wherein each of the first locking screw and the second locking screw have a proximal end and a distal end which extends from the plate, and the distal ends of the screws converge toward each other, but do not impinge.

5. A surgical plate as set forth in claim 4, wherein one or both of the first locking screw and the second locking screw are variable locking screws.

6. The surgical plate as set forth in claim 1, wherein the plate defines a medial line and the plate is bilaterally asymmetrical about the medial line.

7. The surgical plate as set forth in claim 1, wherein the plate defines a transverse axis and the plate is bilaterally asymmetrical about the transverse axis.

8. The plate system as set forth in claim 1, wherein the plate defines a transverse axis and the plate has mirror symmetry about the transverse axis.

9. The surgical plate as set forth in claim 1, wherein the plate has only one set of arms and an outline that forms a Y-shape.

10. The surgical plate as set forth in claim 8, wherein the plate has only two sets of terminal arms which are at either end of the trunk.

11. The surgical plate as set forth in claim 8, wherein the plate has an outline that forms an X-shape.

12. The surgical plate as set forth in claim 1, wherein the threaded locking screw holes of an asymmetrical pair of arms are placed a radially equal distance from the medial line of the elongate central trunk.

13. The surgical plate as set forth in claim 1, wherein the plate defines a medial line and the trunk has an inferior surface defining a curve transverse to the medial line.

14. The surgical plate as set forth in claim 13, wherein the curve is constant along the medial line.

15. The surgical plate as set forth in claim 14, wherein the curve is a portion of a circle and the plate defines a segment of a cylinder.

16. The surgical plate as set forth in claim 1, wherein each arm includes a linking section joining the arms to the trunk and each linking section has a waist.

17. The surgical plate as set forth in claim 16, wherein the waist of the linking section of the first arm and of the second arm is configured to bend relative to the trunk in response to a force applied to at least one of before or during surgery without deforming the threaded screw hole of that arm.

18. The surgical plate as set forth in claim 1, wherein the trunk has a through hole.

19. The surgical plate as set forth in claim 18, wherein the trunk has at least two through holes and a trunk waist area between the through holes which encourages bending of the trunk waist area in response to a force applied to at least one of before or during surgery.

20. The surgical plate as set forth in claim 1, wherein the trunk has a compression slot.

21. The surgical plate as set forth in claim 20, wherein the compression slot comprises a slot having an internal edge which includes a shoulder that slopes toward the inferior side of the plate as it extends away from the first end of the trunk.

22. The surgical plate as set forth in claim 21, wherein the plate has a superior surface of the trunk which opposes the interior side of the plate in cross section and the superior surface of the trunk includes a visual indication of the direction in which the compression slot can be used to apply compression.

23. The surgical plate as set forth in claim 1, further including screws having a threaded shafts and a head wherein the screw holes and the screw heads have a mating interface such that the screw can engage the screw hole so as to allow a plurality of angular orientations of the screw relative to the screw hole.

24. A pre-contoured plate which is a Y-shaped plate or an X-shaped plate comprising:

a trunk defining a medial longitudinal axis with a first end and an opposing second end, and a first arm and a second arm extending from the first end of the trunk, the trunk having a continuous radial curve in a z direction about the medial longitudinal axis and the first arm and the second arm following a radial curve of the trunk so as to spiral about the medial longitudinal axis toward one another,

the first arm having an ear with at least one screw hole defining a first screw axis, the first ear being attached to the trunk by a linking section having a waist, a first angle being defined by an intersection of the medial longitudinal axis of the trunk with the first arm linear medial axis, and a first length being defined by a line from a center of the first arm screw hole along the first arm linear medial axis to the medial longitudinal axis of the trunk, and the linking section waist being configured to bend relative to the trunk section without deforming the screw hole,

the second arm having a second ear with at least one second screw hole defining a second screw axis, the second ear being attached to the trunk by a linking section having a waist, a second angle being defined by an intersection of the medial longitudinal axis of the trunk with the second arm linear medial axis, and a second length being defined by a line from a center of the second arm screw hole along the second arm linear medial axis to medial longitudinal axis of the trunk, the linking section waist being configured to bend relative to the trunk section without deforming a through hole, and the first angle being different from the second angle by from about no about 2O″

or the first length being different from the second length.

25. The pre-contoured plate as set forth in claim 24, wherein the through hole does not deform in response to a force applied to at least one of before or during surgery.

26. The pre contoured plate as set forth in claim 24, wherein the continuous radial curve in the z direction about the longitudinal axis is constant.

27. The pre-contoured plate as set forth in claim 24, wherein the curve forms a portion of a circle.

28. An orthopedic plate having an outline consisting of:

an elongate central trunk portion terminally branching at either one or two ends in a pair of exactly two divergent arms, each arm having a rounded end linked to the central trunk through a waisted section having a length where one waisted section has a greater length for one arm of a pair than the second waisted section of a pair.