SYSTEM AND METHOD TO STABLIZE A SPINAL COLUMN INCLUDING A SPINOLAMINAR LOCKING PLATE

• US 20100082067A1
• Filed: 09/16/2009
• Published: 04/01/2010
• Est. Priority Date: 09/29/2008
• Status: Active Grant

• Current Assignee: Dimitriy G. Kondrashov
• Original Assignee: Dimitriy G. Kondrashov
• Inventors: Kondrashov, Dimitriy G.
• Granted Patent: US 8,623,062 B2
• Time in Patent Office: Days
• US Class Current: 606/264
• CPC Class Codes: A61B 17/7044 also having plates, staples or washers bearing on the vertebrae
• CPC Class Codes: A61B 17/7055 connected to sacrum, pelvis or skull
• CPC Class Codes: A61B 17/7059 Cortical plates A61B17/7007, A61B17/7058 take precedence
• CPC Class Codes: A61B 17/7064 Devices acting on, attached to, or simulating the effect of, vertebral facets; Tools therefor

Abstract

A system adapted to be implanted in a patient to stabilize a spinal column of the patient comprises an anchoring plate having a shape generally conformal with at least a portion of a lamina associated with a targeted vertebra of the spinal column. The anchoring plate is securable to the targeted vertebra by two or more screws. A mounting bracket adapted to receive an secure a rod is connected with the anchoring plate.

Claims

1. A system adapted to be implanted in a patient to stabilize a spinal column of the patient comprising:

an anchoring plate having a shape generally conformal with at least a portion of a lamina associated with a targeted vertebra of the spinal column, the anchoring plate including;

a first threaded hole to receive a first screw having a shank and a head, the first threaded hole adapted to direct the first screw into the targeted vertebra and restrict orientation of the shank to a first angle and/or range of angles relative to the sagittal plane while the first screw is advanced along the first threaded hole,

a second threaded hole to receive a second screw having a shank and a head, the second threaded hole adapted to direct the second screw into the targeted vertebra and restrict orientation of the shank to a second angle and/or range of angles relative to the sagittal plane while the second screw is advanced along the second threaded hole, and

a third threaded hole to receive a third screw having a shank and a head, the third threaded hole adapted to direct the third screw into the targeted vertebra and restrict orientation of the shank to a third angle and/or range of angles relative to the sagittal plane while the third screw is advanced along the third threaded hole, and

wherein the angle of orientation of the shanks of the first, second, and third screws relative to the sagittal plane vary and/or the range of angles of orientation of the shanks of the first, second, and third screws relative to the sagittal plane do not overlap.

2. The system of claim 1, wherein:

the first threaded hole is adapted to direct the first screw into a spinous process associated with the targeted vertebra;

the second threaded hole is adapted to direct the second screw into a facet joint associated with the targeted vertebra; and

the third threaded hole is adapted to direct the third screw into an pedicle associated with the targeted vertebra or the lamina associated with the targeted vertebra.

3. The system of claim 1, further comprising:

a mounting bracket connected with the anchoring plate, the mounting bracket adapted to receive and secure a rod.

4. The system of claim 1, wherein the anchoring plate is fabricated from at least one of stainless steel, titanium, PEEK or some other biocompatible material.

5. The system of claim 1, further comprising:

a first screw adapted to penetrate and hold the spinous process;

a second screw adapted to penetrate an inferior articular process of the targeted vertebra and a superior articular process of a vertebra above the targeted vertebra to resist motion at the facet joint; and

a third screw adapted to penetrate and hold the pedicle or the lamina.

6. The system of claim 3, wherein the mounting bracket is a polyaxial saddle.

7. The system of claim 3, wherein:

the mounting bracket is disconnectable from the anchoring plate.

8. The system of claim 5, wherein:

the head of one or more of the first, second, and third screws is threaded; and

a threaded hole corresponding to the screw having the threaded head includes a primary thread for receiving a thread of the corresponding shank, and a locking thread for receiving the thread of the corresponding head; and

when the screw including the threaded head is seated within the corresponding threaded hole, the screw resists backing out.

9. The system of claim 1, further comprising:

one or more registration features for aligning the first anchoring plate to the targeted vertebra so that the generally conformal surface of the first anchoring plate is generally matched to the complementary surface of the targeted vertebra.

10. A system adapted to be implanted in a patient to stabilize a spinal column of the patient comprising:

a first left anchoring plate having a shape generally conformal with at least a portion of a lamina associated with a left side of a superior targeted vertebra of the spinal column;

a first left mounting bracket connected with the first left anchoring plate;

a second left anchoring plate having a shape generally conformal with at least a portion of a lamina associated with a left side of an inferior targeted vertebra of the spinal column;

a second left mounting bracket connected with the second left anchoring plate;

a left rod extending at least between the first mounting bracket and the second mounting bracket, the left rod being secured to the first mounting bracket and the second mounting bracket to resist relative movement between superior and inferior targeted vertebrae;

a first right anchoring plate having a shape generally conformal with at least a portion of a lamina associated with a right side of a superior targeted vertebra of the spinal column;

a first right mounting bracket connected with the first right anchoring plate;

a second right anchoring plate having a shape generally conformal with at least a portion of a lamina associated with a right side of an inferior targeted vertebra of the spinal column;

a second right mounting bracket connected with the second right anchoring plate;

a right rod extending at least between the first right mounting bracket and the second right mounting bracket, the right rod being secured to the first right mounting bracket and the second right mounting bracket to resist relative movement between superior and inferior targeted vertebrae.

11. The system of claim 10, wherein each mounting bracket is a polyaxial saddle.

12. The system of claim 10, wherein each anchoring plate is fabricated from at least one of stainless steel, titanium, PEEK or some other biocompatible material.

13. The system of claim 10 wherein each of the anchoring plates further includes:

a first threaded hole to receive a first screw having a shank and a head, the first threaded hole adapted to direct the first screw into the superior targeted vertebra and restrict orientation of the shank to a first angle and/or range of angles relative to the sagittal plane while the first screw is advanced along the first threaded hole,

a second threaded hole to receive a second screw having a shank and a head, the second threaded hole adapted to direct the second screw into the superior targeted vertebra and restrict orientation of the shank to a second angle and/or range of angles relative to the sagittal plane while the second screw is advanced along the second threaded hole, and

a third threaded hole to receive a third screw having a shank and a head, the third threaded hole adapted to direct the third screw into the superior targeted vertebra and restrict orientation of the shank to a third angle and/or range of angles relative to the sagittal plane while the third screw is advanced along the third threaded hole, and

wherein the angle of orientation of the shanks of the first, second, and third screws relative to the sagittal plane vary and/or the range of angles of orientation of the shanks of the first, second, and third screws relative to the sagittal plane do not overlap.

14. The system of claim 13, wherein:

the first threaded hole is adapted to direct the first screw into a spinous process associated with the targeted vertebra;

the second threaded hole is adapted to direct the second screw into an facet joint associated with the targeted vertebra; and

the third threaded hole is adapted to direct the third screw into an pedicle associated with the targeted vertebra or the lamina associated with the targeted vertebra.

15. The system of claim 13, further comprising for each of the anchoring plates:

a first screw adapted to penetrate and hold the spinous process;

a second screw adapted to penetrate an inferior articular process of the targeted vertebra and a superior articular process of a vertebra above the targeted vertebra to resist motion at the facet joint; and

a third screw adapted to penetrate and hold the pedicle or the lamina.

16. The system of claim 15, wherein:

the head of one or more of the first, second, and third screws is threaded; and

a threaded hole corresponding to the screw having the threaded head includes a primary thread for receiving a thread of the corresponding shank, and a locking thread for receiving the thread of the corresponding head; and

when the screw including the threaded head is seated within the corresponding threaded hole, the screw resists backing out.

17. The system of claim 10, wherein each of the anchoring plates further includes one or more registration features for aligning the anchoring plate to the corresponding targeted vertebra so that the generally conformal surface of the anchoring plate is generally matched to the complementary surface of the corresponding targeted vertebra.

18. A system adapted to be implanted in a patient to stabilize a spinal column of the patient comprising:

an anchoring plate having a shape generally conformal with at least a portion of a lamina associated with a targeted vertebra of the spinal column, the anchoring plate securable to the targeted vertebra by two or more screws; and

a mounting bracket connected with the anchoring plate, the mounting bracket adapted to receive and secure a rod.

19. The system of claim 18, further comprising:

a first screw adapted to penetrate and hold a spinous process to secure the anchoring plate to the targeted vertebra;

a second screw adapted to penetrate an inferior articular process of the targeted vertebra and a superior articular process of a vertebra above the targeted vertebra to resist motion at a facet joint; and

a third screw adapted to penetrate and hold a pedicle or a lamina of the targeted vertebra to secure the anchoring plate to the targeted vertebra.

20. The system of claim 19, wherein the anchoring plate includes:

a first threaded hole to receive the first screw, the first threaded hole directing the first screw into the targeted vertebra and restricting orientation of a shank of the first screw to a first angle and/or range of angles relative to the sagittal plane while the first screw is advanced along the first threaded hole,

a second threaded hole to receive the second screw, the second threaded hole adapted to direct the second screw into the targeted vertebra and restrict orientation of a shank of the second screw to a second angle and/or range of angles relative to the sagittal plane while the second screw is advanced along the second threaded hole, and

a third threaded hole to receive the third screw, the third threaded hole adapted to direct the third screw into the targeted vertebra and restrict orientation of a shank of the third screw to a third angle and/or range of angles relative to the sagittal plane while the third screw is advanced along the third threaded hole, and

wherein the angle of orientation of the shanks of the first, second, and third screws relative to the sagittal plane vary and/or the range of angles of orientation of the shanks of the first, second, and third screws relative to the sagittal plane do not overlap.

21. The system of claim 18, wherein the mounting bracket includes a saddle that is rotatable relative to the anchoring plate and/or polyaxial.

22. A system adapted to be implanted in a patient to stabilize a spinal column of the patient comprising:

an anchoring plate having a shape generally conformal with structures of a targeted vertebra of the spinal column including at least a portion of a lamina, at least a portion of an inferior articular, and at least a portion of a spinous process, the anchoring plate including;

at least one threaded hole adapted to direct a first screw into the spinous process,

at least one threaded hole adapted to direct a second screw into a pedicle associated with the targeted vertebra,

at least one threaded hole adapted to direct a third screw into a facet joint including the inferior articular process and a superior articular process associated with a vertebra superior to the targeted vertebra along the spinal column so that motion at the facet joint is restricted; and

a mounting bracket connected with the anchoring plate and including a polyaxial saddle, the mounting bracket adapted to receive and secure a rod.

23. A system adapted to be implanted in a patient to stabilize a spinal column of the patient comprising:

an anchoring plate having a shape generally conformal with structures of a targeted vertebra of the spinal column including at least a portion of a lamina, and at least a portion of a spinous process, the anchoring plate including;

at least one threaded hole adapted to direct a first screw into the spinous process,

at least one threaded hole adapted to direct a second screw into a pedicle associated with the targeted vertebra,

at least one threaded hole adapted to direct a third screw into the lamina; and

a mounting bracket connected with the anchoring plate and including a polyaxial saddle, the mounting bracket adapted to receive and secure a rod.

24. A system adapted to be implanted in a patient to stabilize a spinal column of the patient comprising:

an anchoring plate having a shape generally conformal with at least a portion of a lamina associated with a left side and a right side of a targeted vertebra of the spinal column, the anchoring plate securable to the targeted vertebra by two or more screws on the left side and two or more screws on the right side of the targeted vertebra; and

a mounting bracket connected with the anchoring plate, the mounting bracket adapted to receive and secure a rod.

25. The system of claim 24, further comprising:

a first left screw adapted to penetrate an inferior articular process of the targeted vertebra and a superior articular process of a vertebra above the targeted vertebra to resist motion at a facet joint on a left side of the targeted vertebra;

a second left screw adapted to penetrate and hold a pedicle or a lamina of the targeted vertebra on a left side of the targeted vertebra to secure the anchoring plate to the targeted vertebra;

a first right screw adapted to penetrate an inferior articular process of the targeted vertebra and a superior articular process of a vertebra above the targeted vertebra to resist motion at a facet joint on a right side of the targeted vertebra; and

a second right screw adapted to penetrate and hold a pedicle or a lamina of the targeted vertebra on a right side of the targeted vertebra to secure the anchoring plate to the targeted vertebra.

26. The system of claim 24, wherein the anchoring plate includes:

a first threaded hole to receive the first screw, the first threaded hole directing the first screw into the targeted vertebra and restricting orientation of a shank of the first screw to a first angle and/or range of angles relative to the sagittal plane while the first screw is advanced along the first threaded hole,

a second threaded hole to receive the second screw, the second threaded hole adapted to direct the second screw into the targeted vertebra and restrict orientation of a shank of the second screw to a second angle and/or range of angles relative to the sagittal plane while the second screw is advanced along the second threaded hole, and

wherein the angle of orientation of the shanks of the first and second screws relative to the sagittal plane vary and/or the range of angles of orientation of the shanks of the first and second screws relative to the sagittal plane do not overlap.

27. The system of claim 24, wherein the mounting bracket includes a saddle that is rotatable relative to the anchoring plate and/or polyaxial.