Multi angle bone bolt

• US 5,591,166 A
• Filed: 03/27/1995
• Issued: 01/07/1997
• Est. Priority Date: 03/27/1995
• Status: Expired due to Term

• Current Assignee: Howmedica Osteonics Corp. (Stryker Corporation)
• Original Assignee: Smith & Nephew Richards Incorporated (Smith & Nephew PLC)
• Inventors: Morrison, Matthew M., Bernhardt, Andrew
• Primary Examiner(s): Buiz, Michael Powell
• Assistant Examiner(s): WOO, JULIAN W
• Application Number:
  US08/411,532
• Time in Patent Office: 652 Days
• Field of Search: 606/61, 606/60, 606/73, 606/72, 606/69, 411/383, 411/388, 411/389, 411/397
• US Class Current: 606/266
• CPC Class Codes: A61B 17/7037 wherein pivoting is blocked when the rod is clamped
• CPC Class Codes: A61B 17/7038 to a different extent in different directions, e.g. within one plane only
• CPC Class Codes: A61B 17/7041 with single longitudinal rod offset laterally from single row of screws or hooks A61B17/7044 takes precedence
• CPC Class Codes: A61B 17/8047 wherein the additional element surrounds the screw head in the plate hole A61B17/8052 takes precedence
• CPC Class Codes: A61B 17/86 Pins or screws or threaded wires; nuts therefor A61B17/72 take precedence

Abstract

An orthopedic bone bolt and bone plate construct comprising a bone plate member and a series of fasteners. The bone plate member has at least one open portions, with the open portions allowing placement of a series of fasteners therethrough at spaced apart positions along a length of the open portions. The series of fasteners are attachable to the plate member at the open portions, with at least one of the fasteners including a multi-angle fastener having a pair of fastener sections configured to be angled relative to one another. The multi-angle fastener comprising; an upper section having a central longitudinal axis and an outer surface; a lower section having a central longitudinal axis and an outer surface with a threaded portion configured to be surgically implantable into a patient'"'"'s bone tissue and a joint for connecting the upper and lower sections together. The joint including corresponding mating surfaces configured to articulate with each other sufficiently to allow the upper and lower sections to angle relative to one another.

Claims

1. An orthopedic bone bolt and bone plate construct comprising:

a) a bone plate member having at least one open portion, each open portion allowing placement of a series of fasteners therethrough at spaced apart positions along a length of each open portion;

b) a series of fasteners attachable to said plate member at said at least one open portion, at least one of said fasteners including a multi-angle fastener having a pair of fastener sections configured to be angled relative to one another;

c) said multi-angle fastener comprising;

an upper section having a central longitudinal axis, an externally threaded projection and an outer surface;

a lower section having a central longitudinal axis and an outer surface having bone attachment means configured to be surgically implantable into a patient'"'"'s bone tissue;

joint means for connecting the upper and lower sections together, said joint means including corresponding mating surfaces configured to articulate with each other sufficiently to allow the upper and lower sections to angle relative to one another.

2. The construct of claim 1, wherein the mating surfaces include corresponding concave and convex surfaces shaped to allow for a rotational movement of the upper and lower sections, with the corresponding concave and convex surfaces providing a semi-rigid connection within the multi-angle fastener.

3. The construct of claim 2, wherein the rotational movement of the upper and lower sections allows for a range on angulation in a range of about between 20-70 degrees relative to the central longitudinal axes of the upper and lower sections.

4. The construct of claim 1, wherein the mating surfaces include a pair of flat surfaces, said flat surfaces each forming an angle with the axes of the upper and lower sections when said axes are aligned, said flat surfaces angled to allow for a rotational movement of the upper and lower sections, with the pair of angled flat surfaces providing a rigid connection within the multi-angle fastener.

5. The construct of claim 4, wherein the flat surfaces are angled to allow for rotational movement in a range of about between 20-70 degrees relative to the central longitudinal axes of the upper and lower sections.

6. The construct of claim 1, further including a sleeve configured to surround the joint means for holding together the upper and lower sections at the joint means.

7. The construct of claim 6, wherein the sleeve is cylindrical in shape and includes an inner surface with threading on a portion of the inner surface, said sleeve threading engaging a threaded portion on the outer surface of the lower section of the fastener.

8. The construct of claim 1, wherein the series of fasteners includes at least two multi-angle fasteners.

9. The construct of claim 1, wherein the series of fasteners includes at least one bone bolt not capable of articulation.

10. An orthopedic bone bolt and spinal rod construct comprising:

a) a spinal rod connected to a plurality of rod/bolt connectors, each connector having an open portion with each open portion allowing placement of a fastener therethrough, the connectors being at spaced apart positions along a length of the spinal rod;

b) a series of fasteners attachable to each of said connectors at each said connector open portion, at least one of said fasteners including a multi-angle fastener having a pair of fastener sections configured to be angled relative to one another;

c) said multi-angle fastener comprising;

an upper section having a central longitudinal axis, an externally threaded projection and an outer surface;

a lower section having a central longitudinal axis and an outer surface having bone attachment means configured to be surgically implantable into a patient'"'"'s bone tissue;

joint means for connecting the upper and lower sections together, said joint means including corresponding mating surfaces configured to articulate with each other sufficiently to allow the upper and lower sections to angle relative to one another.

11. The construct of claim 10, wherein the mating surfaces include corresponding concave and convex surfaces shaped to allow for a rotational movement of the upper and lower sections, with the corresponding concave and convex surfaces providing a semi-rigid connection within the multi-angle fastener.

12. The construct of claim 11, wherein the rotational movement of the upper and lower sections allows for a range of angulation in a range of about between 20-70 degrees relative to the central longitudinal axes of the upper and lower sections.

13. The construct of claim 10, wherein the mating surfaces include a pair of flat surfaces, said flat surfaces each forming an angle with the axes of the upper and lower sections when said axes are aligned, said flat surfaces angled to allow for a rotational movement of the upper and lower sections, with the pair of angled flat surfaces providing a rigid connection within the multi-angle fastener.

14. The construct of claim 13, wherein the flat surfaces are angled to allow for rotational movement in a range of about between 20-70 degrees relative to the central longitudinal axes of the upper and lower sections.

15. The construct of claim 10 further including a sleeve configured to surround the joint means for holding together the upper and lower sections at the joint means.

16. The construct of claim 15, wherein the sleeve is cylindrical in shape and includes an inner surface with threading on a portion of the inner surface, said sleeve threading engaging a threaded portion on the outer surface of the lower section of the fastener.

17. The construct of claim 10, wherein the series of fasteners includes at least two multi-angle fasteners.

18. The construct of claim 10, wherein the series of fasteners includes at least one bone bolt not capable of articulation.

19. An orthopedic construct comprising:

a) a member with at least one attachment portion allowing attachment of a series of fasteners thereto at spaced apart positions along a length of each attachment portion;

b) a series of fasteners attachable to said member at said at least one attachment portion, at least one of said fasteners including a multi-angle fastener having a pair of fasteners sections configured to be angled relative to one another;

c) said multi-angle fastener comprising;

an upper section having a central longitudinal axis, an externally threaded projection and an outer surface;

a lower section having a central longitudinal axis and an outer surface having bone attachment means configured to be surgically implantable into a patient'"'"'s bone tissue;

joint means for connecting the upper and lower sections together, said joint means including corresponding mating surfaces configured to articulate with each other sufficiently to allow the upper and lower sections to angle relative to one another.

20. A multi-angle fastener for use in connecting a bone portion with a connecting member, said multi-angle fastener comprising:

a) an upper section having a central longitudinal axis, an externally threaded projection and an outer surface;

b) a lower section having a central longitudinal axis and an outer surface having a bone attachment means configured to be surgically implantable into a patient'"'"'s bone tissue; and

c) joint means for connecting the upper and lower sections together, said joint means including corresponding mating surfaces configured to articulate with each other sufficiently to allow the upper and lower sections to angle relative to one another.

21. The fastener of claim 20, wherein the mating surfaces include corresponding concave and convex surfaces shaped to allow for a rotational movement of the upper and lower sections, with the corresponding concave and convex surfaces providing a semi-rigid connection within the multi-angle fastener.

22. The fastener of claim 21, wherein the rotational movement of the upper and lower sections allows for a range of angulation in a range of about between 20-70 degrees relative to the central longitudinal axes of the upper and lower sections.

23. The fastener of claim 20, wherein the mating surfaces include a pair of flat surfaces, said flat surfaces each forming an angle with the axes of the upper and lower sections when said axes are aligned, said flat surfaces angled to allow for a rotational movement of the upper and lower sections, with the pair of angled flat surfaces providing a rigid connection within the multi-angle fastener.

24. The fastener of claim 23, wherein the flat surfaces are angled to allow for rotational movement in a range of about between 20-70 degrees relative to the central longitudinal axes of the upper and lower sections.

25. The fastener of claim 20, further including a sleeve configured to surround the joint means for holding together the upper and lower sections at the joint means.

26. The fastener of claim 25, wherein the sleeve is cylindrical in shape and includes an inner surface with threading on a portion of the inner surface, said sleeve threading engaging a threaded portion on the outer surface of the lower section of the fastener.