Bone plates with dynamic elements

Patent metadata

Field	Value
Publication number	US-11871899-B2
Application number	US-202217715794-A
Country	US
Kind code	B2
Filing date	Apr 7, 2022
Priority date	Dec 20, 2013
Publication date	Jan 16, 2024
Grant date	Jan 16, 2024

Abstract

Bone fixation systems include various combinations of stabilizing members, dynamic elements, fasteners, and locking mechanisms. Bone plates receive dynamic bone staples and bone screws. Other dynamic elements include elbow pegs, straight pegs, and wire pegs.

First claim

What is claimed is:

1. A bone fixation system, comprising:
(i) a stabilizing member comprising:
an obverse side;
a reverse side opposite the obverse side; and
an elongated receiver having an opening on the obverse side, and first and second receiver holes extending through the obverse side and the reverse side, wherein the receiver holes define respective concavities with respect to a view from the obverse side such that the receiver holes are configured to engage heads of respective bone screws that are driven through the receiver holes, wherein the perimeter of the opening is continuously surrounded by the obverse side; and

(ii) a dynamic element comprising:
an elongated bridge extending between a first bridge end and a second bridge end, wherein the bridge is configured to be received by the elongated receiver;
a first leg coupled to the bridge and extending from the bridge through the first receiver hole to a first free end, wherein the elongated receiver and first leg are configured so that the first leg can extend through the reverse side of the stabilizing member when the bridge is received by the elongated receiver; and
a second leg coupled to the bridge and extending from the bridge through the second receiver hole to a second free end, wherein the elongated receiver and second leg are configured so that the second leg can extend through the reverse side of the stabilizing member when the bridge is received by the elongated receiver;
wherein the dynamic element is configured to be held in an elastically deformed state as it is being received by the elongated receiver, and to transition towards a relaxed state after it is received by the elongated receiver so as to apply a compressive force between the first and second free ends.

2. The system of claim 1 , wherein the elongated receiver is configured to prevent the bridge from passing through the reverse side.

3. The system of claim 1 , wherein the dynamic element comprises a first projection extending from the first bridge end and a second projection extending from the second bridge end, the projections configured to engage an inserter and facilitate placing the dynamic element in the elastically deformed state.

4. The system of claim 1 , wherein when the bridge is seated within the elongated receiver, the first and second legs do not contact the stabilizing member.

5. The system of claim 1 , wherein the first free end is separated from the second free end by a first distance when the dynamic element is in the elastically deformed state and the first free end is separated from the second free end by a second distance when the dynamic element is in the relaxed state, the first distance being greater than the second distance.

6. The system of claim 1 , wherein the elongated receiver comprises an opening on the reverse side that is coextensive with the entire opening on the obverse side so as to form a channel extending between the obverse side and the reverse side.

7. The system of claim 1 , wherein the first and second receiver holes are threaded.

8. The system of claim 1 , wherein the elongated receiver comprises a web at least partially defining the receiver and configured to abut the bridge of the dynamic element when the bridge is received by the elongated receiver, and the web is recessed from the obverse side of the stabilizing member.

9. A bone fixation system, comprising:
(i) a stabilizing member comprising:
an obverse side;
a reverse side opposite the obverse side; and
a plurality of elongated receivers aligned with each other along a direction, each of the elongated receivers being elongate along the direction, and each of the elongated receivers having an opening on the obverse side, wherein the perimeter of the opening is continuously surrounded by the obverse side;
(ii) a plurality of dynamic elements, each of the dynamic elements comprising:
an elongated bridge extending between a first bridge end and a second bridge end, wherein the bridge is configured to be received by a respective one of the elongated receivers; and
at least one leg coupled to the bridge and extending from the bridge to a free end, wherein the respective one of the elongated receivers and leg are configured so that the leg can extend through the reverse side of the stabilizing member when the bridge is received by the respective one of the elongated receivers;
wherein each of the dynamic elements is configured to be held in an elastically deformed state as it is being received by the respective one of the elongated receivers, and to transition towards a relaxed state after it is received by the respective one of the elongated receivers so as to apply a compressive force from the free end.

10. The system of claim 9 , wherein each of the elongated receivers is configured to prevent the bridge from passing through the reverse side.

11. The system of claim 9 , wherein the dynamic element comprises a projection extending from the bridge, the projection configured to engage an inserter and facilitate placing the dynamic element in the elastically deformed state.

12. The system of claim 9 , wherein when the bridge is seated within the respective one of the elongated receivers, the at least one leg does not contact the stabilizing member.

13. The system of claim 9 , wherein each of the elongated receivers comprises an opening on the reverse side that is coextensive with the entire opening on the obverse side so as to form a channel extending between the obverse side and the reverse side.

14. The system of claim 9 , wherein each opening comprises a receiver hole extending through the obverse side and reverse side, wherein the at least one leg is configured to extend through the receiver hole when the bridge is received by the respective one of the elongated receivers.

15. The system of claim 9 , wherein each of the elongated receivers comprises a web that is configured to abut the bridge of the dynamic element when the bridge is received by the respective one of the elongated receivers.

16. The system of claim 15 , wherein the web is recessed from the obverse side of the stabilizing member.

17. The system of claim 9 , wherein each of the elongated receivers comprises one or more fastener openings extending through the obverse side and the reverse side, the fastener openings being spaced apart from the opening on the obverse side of the elongated receiver.

18. The system of claim 9 , wherein the at least one leg and the bridge form a first angle when the dynamic element is in the elastically deformed state and a second angle when the dynamic element is in the relaxed state, the first angle being greater than the second angle.

19. The system of claim 9 , further comprising a fastener configured to secure a respective one of the deformable elements to the stabilizing member.

20. The system of claim 9 , wherein the fastener comprises one of 1) a ductile tab of the stabilizing member, and 2) a set screw that is configured to be received by the stabilizing member so as to capture the dynamic element between the stabilizing member and the set screw.

Assignees

• Crossroads Extremity Systems Llc

Inventors

• Hollis Michael Chad
• Hartdegen Vernon Raymond
• Sayger Daniel

Classifications

• A61B17/7233 Primary

  with special means of locking the nail to the bone · CPC title

• A61B17/0401

  Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors (A61B17/0642 takes precedence; fixation devices for tendons or ligaments A61F2/0811) · CPC title

• A61B17/0642

  for bones, e.g. for osteosynthesis or connecting tendon to bone · CPC title

• A61B17/0644

  penetrating the tissue, deformable to closed position · CPC title

• A61B17/1728

  for holes for bone plates or plate screws · CPC title