Threaded spinal device for insertion between vertebral bodies
An artificial spinal device is disclosed for insertion between two adjacent vertebrae. Instrumentation and procedure is also disclosed.
1 . An at least in part hollow spinal fusion device for insertion at least in part in between the external perimeters of two spaced apart vertebral bodies of a human spine, said device comprising:
opposed arcuate portions each having an interior facing surface and an exterior facing surface, said interior facing surfaces being spaced apart to define a hollow interior, each of said opposed arcuate portions having at least one opening therethrough in communication with said hollow interior;
and a thread on at least a portion of said exterior facing surfaces of said opposed arcuate portions.
2 . The spinal device of claim 1 , wherein said device is at least in part cylindrical.
3 . The spinal device of claim 1 , wherein said device has a mid-longitudinal axis and has a generally circular cross-section transverse to the mid-longitudinal axis over at least a portion thereof.
4 . The spinal device of claim 1 , wherein said device has opposite ends between said opposed arcuate portions, at least one of said ends being at least in part open.
5 . The spinal device of claim 4 , wherein said at least one end being at least in part open is configured to threadably engage a length extending member.
6 . The spinal device of claim 4 , wherein said at least one end being at least in part open is adapted to threadably engage an end cap.
7 . The spinal device of claim 6 , wherein said end cap is a length extending member.
8 . The spinal device of claim 7 , wherein said length extending member is adapted to contact at least one of the spaced apart vertebral bodies.
9 . The spinal device of claim 1 , wherein said opposed arcuate portions include a plurality of said openings therethrough.
10 . The spinal device of claim 4 , wherein said device has a maximum diameter and a maximum length from one of said opposite ends to the other of said opposite ends, said maximum length being greater than said maximum diameter.
11 . The spinal device of claim 1 , wherein said thread on said exterior facing surfaces is not continuous.
12 . The spinal device of claim 1 , wherein said thread has at least one interruption.
13 . The spinal device of claim 1 , wherein said exterior facing surfaces are not threaded between spaced apart portions of said exterior facing surfaces that are threaded.
14 . The spinal device of claim 1 , in combination with bone.
15 . The spinal device of claim 14 , wherein said bone is loaded in said hollow interior of said device.
16 . The spinal device of claim 14 , wherein said bone is compressively loaded in said device.
17 . The spinal device of claim 1 , in combination with a fusion promoting substance other than bone.
18 . The spinal device of claim 1 , wherein said device comprises at least in part a fusion promoting substance.
19 . The spinal device of claim 1 , wherein said device is treated with a fusion promoting substance.
20 . The spinal device of claim 1 , in combination with a source of osteogenesis.
21 . The spinal device of claim 1 , wherein said device comprises an implantation material that is stronger than bone.
22 . The spinal device of claim 1 , wherein said device comprises an implantation material that comprises a bone ingrowth material.
23 . The spinal device of claim 1 , wherein said device is in combination with an implantation material that intrinsically participates in the growth of bone through said device.
24 . The spinal device of claim 1 , wherein said opposed arcuate portions have a porous surface.
25 . The spinal device of claim 1 , wherein said device comprises an implantation material that is porous.
26 . The spinal device of claim 1 , wherein said device comprises an ASTM device quality material.
27 . The spinal device of claim 26 , wherein said ASTM quality material comprises titanium.
28 . The spinal device of claim 1 , wherein said spinal device is an artificial spinal implant.
29 . The spinal device of claim 1 , wherein said spinal device is an interbody spinal implant.
30 . A spinal fusion system comprising:
a first spinal fusion device for insertion at least in part in between the external perimeters of two spaced apart vertebral bodies of a human spine, said first spinal device comprising opposed arcuate portions each having an interior facing surface and an exterior facing surface, said interior facing surfaces being spaced apart to define a hollow interior, each of said opposed arcuate portions having at least one opening therethrough in communication with said hollow interior, and a thread on at least a portion of said exterior facing surfaces of said opposed arcuate portions; and
a second spinal device adapted to penetrably engage each of the spaced apart vertebral bodies, said second spinal device comprising an elongated member having a plurality of openings therethrough along at least a portion of the length of said second spinal device.
31 . The spinal fusion system of claim 30 , wherein said second spinal device includes a threaded member for penetrably engaging at least one of the spaced apart vertebral bodies.
32 . The spinal fusion system of claim 30 , wherein said first spinal device is at least in part cylindrical.
33 . The spinal fusion system of claim 30 , wherein said first spinal device has a mid-longitudinal axis and has a generally circular cross-section transverse to the mid-longitudinal axis over at least a portion thereof.
34 . The spinal fusion system of claim 30 , wherein said first spinal device has opposite ends between said opposed arcuate portions, at least one of said ends being at least in part open.
35 . The spinal fusion system of claim 34 , wherein said at least one end being at least in part open is configured to threadably engage a length extending member.
36 . The spinal fusion system of claim 34 , wherein said at least one end being at least in part open is adapted to threadably engage an end cap.
37 . The spinal fusion system of claim 36 , wherein said end cap is a length extending member.
38 . The spinal fusion system of claim 37 , wherein said length extending member is adapted to contact at least one of the spaced apart vertebral bodies.
39 . The spinal fusion system of claim 30 , wherein each of said opposed arcuate portions includes a plurality of said openings therethrough.
40 . The spinal fusion system of claim 34 , wherein said first spinal device has a maximum diameter and a maximum length from one of said opposite ends to the other of said opposite ends, said maximum length being greater than said maximum diameter.
41 . The spinal fusion system of claim 30 , wherein said thread on said exterior facing surfaces is not continuous.
42 . The spinal fusion system of claim 41 , wherein said thread has at least one interruption.
43 . The spinal fusion system of claim 30 , wherein said exterior facing surfaces are not threaded between spaced apart portions of said exterior facing surfaces that are threaded.
44 . The spinal fusion system of claim 30 , in combination with bone.
45 . The spinal fusion system of claim 44 , wherein said bone is loaded in said hollow interior of said first spinal device.
46 . The spinal fusion system of claim 44 , wherein said bone is compressively loaded in said first spinal device.
47 . The spinal fusion system of claim 30 , in combination with a fusion promoting substance other than bone.
48 . The spinal fusion system of claim 30 , wherein said first spinal device comprises at least in part a fusion promoting substance.
49 . The spinal fusion system of claim 30 , wherein said first spinal device is treated with a fusion promoting substance.
50 . The spinal fusion system of claim 30 , in combination with a source of osteogenesis.
51 . The spinal fusion system of claim 30 , wherein said first spinal device comprises an implantation material that is stronger than bone.
52 . The spinal fusion system of claim 30 , wherein said first spinal device comprises an implantation material that comprises a bone ingrowth material.
53 . The spinal fusion system of claim 30 , in combination with an implantation material that intrinsically participates in the growth of bone through said first spinal device.
54 . The spinal fusion system of claim 30 , wherein said opposed arcuate portions have a porous surface.
55 . The spinal fusion system of claim 30 , wherein said first spinal device comprises an implantation material that is porous.
56 . The spinal fusion system of claim 30 , wherein at least one of said first spinal device and said second spinal device comprises an ASTM implant quality material.
57 . The spinal fusion system of claim 56 , wherein said ASTM quality material comprises titanium.
58 . The spinal fusion system of claim 30 , wherein said first spinal device is an artificial spinal implant.
59 . The spinal fusion system of claim 30 , wherein said first spinal device is an interbody spinal implant.