Bone plate, bone plate system, and method of using the same

Patent metadata

Field	Value
Publication number	US-12011199-B2
Application number	US-202017071669-A
Country	US
Kind code	B2
Filing date	Oct 15, 2020
Priority date	Oct 15, 2020
Publication date	Jun 18, 2024
Grant date	Jun 18, 2024

Abstract

A bone plate comprises a plate body and at least one tab. The plate body defines an inner body surface configured to face an underlying bone, an outer body surface opposite the inner body surface, and an outer side surface that extends between the inner body surface and the outer body surface. The outer side surface defines an outer perimeter of the plate body. The at least one tab includes a head and an arm that extends from the plate body to the head. The tab defines a tab aperture that extends through the head and is configured to receive a bone anchor. The bone anchor can be coupled with a screw hole in the nail. The arm is configured to deflect with respect to the plate body so as to move the head between a pre-fixation position and a fixation position spaced from the pre-fixation position.

First claim

What is claimed:

1. A bone plate comprising:
a plate body that defines a bone-facing body surface and an outer body surface opposite the bone-facing body surface, wherein the bone plate defines a pair of threaded bone-anchor apertures that each extends through the plate body from the outer body surface to the bone-facing body surface, and the bone plate further defines additional first and second threaded bone-anchor apertures that extend through the plate body from the outer body surface to the bone-facing body surface, and
first and second tabs each having a respective flexible arm that extends out from the plate body, and a respective head supported by the respective flexible arm, wherein 1) the first tab has only a single first tab aperture, and the single first tab aperture extends through the respective head of the first tab, 2) the second tab has only a single second tab aperture, and the single second tab aperture extends through the respective head of the second tab, and 3) each of the single first tab aperture and the second tab aperture is configured to receive a respective bone anchor;
a third aperture that extends through the plate body from the outer body surface to the bone-facing body surface, the third aperture disposed such that 1) a first one of the pair of threaded bone-anchor apertures is offset in its entirety from the third aperture in a first direction, 2) a second one of the pair of threaded bone-anchor apertures is offset in its entirety from the third aperture in a second direction opposite the first direction, 3) each of the first and second threaded bone-anchor apertures are offset in their respective entireties from the third aperture in a third direction perpendicular to each of the first and second directions, and 4) the first and second single tab apertures are the only through holes of the bone plate that are offset in their respective entireties from the third aperture in a fourth direction opposite the third direction,
wherein the pair of threaded bone-anchor apertures and the first and second threaded bone-anchor apertures extend through the plate body along respective central axes, and the each of the pair of threaded bone-anchor apertures is enlarged with respect to each of the first and second threaded bone-anchor apertures along respective directions perpendicular to the respective central axes.

2. The bone plate of claim 1 , wherein the pair of bone-anchor apertures and the first and second bone-anchor apertures each defines variable-angle threading.

3. A system comprising:
the bone plate of claim 1 ;
a first bone anchor configured to threadedly mate with one of the pair of the threaded bone-anchor apertures and extend into bone; and
a plurality of bone anchors configured to threadedly mate with the first and second threaded bone-anchor apertures, respectively.

4. The system of claim 3 , further comprising an intramedullary nail having respective bone-anchor apertures configured to receive the first bone anchor and one of the plurality of bone anchors, respectively.

5. The system of claim 4 , wherein another of the plurality of bone anchors are configured to be driven into bone.

6. The bone plate of claim 1 , wherein the third aperture is threaded.

7. The bone plate of claim 1 , wherein the third aperture is unthreaded.

8. The bone plate of claim 1 , wherein the third aperture is disposed within a perimeter defined by the respective central axes of the pair of threaded bone-anchor apertures, the first and second threaded bone-anchor apertures, and further defined by respective central axes of the first and second single tab apertures.

9. The bone plate of claim 1 , wherein the plate body further defines a recessed surface that surrounds the third aperture, wherein:
i) the first one of the pair of threaded bone-anchor apertures is offset in its entirety from the recessed surface in the direction,
ii) the second one of the pair of threaded bone-anchor apertures is offset in its entirety from the recessed surface in the second direction
iii) each of the first and second threaded bone-anchor apertures are offset in their respective entireties from the recessed surface in the third direction; and
the first and second single tab apertures are the only bone anchor apertures of the bone plate that are offset in their respective entireties from the recessed surface in the fourth direction.

10. The bone plate of claim 1 , wherein each the flexible arms of the first and second tabs each has a respective inner bone-facing arm surface and an opposed outer arm surface, and each outer arm surface is inwardly recessed with respect to each of the outer body surface and the respective head.

11. A bone plate comprising:
a plate body that defines an inner bone-facing body surface and an outer body surface opposite the bone-facing body surface, wherein the bone plate defines a plurality of threaded bone-anchor apertures that extend through the plate body from the outer body surface to the bone-facing body surface; and
a tab having a flexible arm that extends out from the plate body, and a head supported by the flexible arm, the head defining an inner head surface configured to face bone and an outer head surface opposite the inner head surface, wherein the tab defines a tab aperture that extends through the head from the outer head surface to the inner head surface, the tab aperture configured to receive a bone anchor,
wherein the flexible arm defines an inner bone-facing arm surface and an opposed outer arm surface, and the outer arm surface is inwardly recessed with respect to each of the outer body surface and the outer head surface.

12. The bone plate of claim 11 , wherein the outer arm surface tapers out to the outer body surface.

13. The bone plate of claim 11 , wherein the head defines a head thickness from the inner head surface to the outer head surface the plate body defines a body thickness from the inner bone-facing body surface and the outer body surface, and the head thickness is substantially equal to the body thickness.

14. The bone plate of claim 11 , wherein the arm extends perpendicular to an outer perimeter of plate body.

15. The bone plate of claim 11 , wherein the bone plate comprises a plurality of tabs each having a flexible arm that extends out from the plate body, and a head supported by the arm, and a tab aperture that extends through the head and is configured to receive a bone anchor, wherein each flexible arm defines a respective inner bone-facing arm surface and a respective opposed outer arm surface, and each outer arm surface is inwardly recessed with respect to the outer body surface.

16. A system comprising the bone plate of claim 11 and an intramedullary nail having respective bone-anchor apertures configured to receive first and second bone anchors that are threadedly mated to respective ones of the threaded bone-anchor apertures.

17. The system of claim 11 , wherein the inner bone-facing arm surface is continuous with the inner bone-facing body surface.

Assignees

• Depuy Synthes Products Inc

Inventors

• Gabelberger Josef
• Cowens David
• Mcmanus Joshua
• Keyer Thomas
• Santis Catherine
• Khatchadourian Robert
• Van Citters Peter
• Bogle David W
• Sibole Alexandra

Classifications

• A61B17/8061

  specially adapted for particular bones (A61B17/70 and A61B17/74 take precedence) · CPC title

• A61B17/8014

  the extension or compression force being caused by interaction of the plate hole and the screws · CPC title

• A61B17/8052

  immobilised relative to screws by interlocking form of the heads and plate holes, e.g. conical or threaded · CPC title

• A61B17/8863

  Apparatus for shaping or cutting osteosynthesis equipment by medical personnel · CPC title

• A61B17/808 Primary

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