US20080051901A1
Active / In Force
US
⏱️ 0.8 years remaining
Spinal Prosthesis with Multiple Pillar Anchors
Assignee: Simplify Medical Pty Ltd
•
Filing: 2007-07-26
•
Granted: —
•
Expires: 2027-07-26
Abstract
Abstract An intervertebral prosthesis includes a first component adapted to engage a first vertebra and a second component adapted to engage a second vertebra. A row of pillars is disposed on at least one of the components. The row of pillars is adapted to enter a groove and anchor the prosthesis in the intervertebral space. The pillars can be shaped and spaced apart to provide gaps so that bone can grow into the gaps. Additional rows of pillars can be disposed on the components and adapted to enter additional grooves formed in the vertebra.
Inventors
- 👤 Malan de Villiers
- 👤 David Hovda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:08
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/44; A61F2/442; A61F2/4425; A61F2002/30001; A61F2002/30621; A61F2002/30649; A61F2/30767; A61F2/30771; A61F2002/30878; A61F2002/30884; A61F2002/30891; A61F2002/30894; A61F2002/30904; A61F2002/443; A61F2002/449
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
86 words
1 . An intervertebral prosthesis comprising: an upper component adapted to engage an upper vertebra; a lower component adapted to engage a lower vertebra; a row of pillars disposed on at least one of the upper component or the lower component, the row of pillars adapted to enter a groove formed in the upper vertebra or the lower vertebra and wherein the upper component and the lower component are adapted to engage each other or an intermediate member to form an articulate joint between the vertebrae.
Claim 2
Dependent Claim
86 words
1 . An intervertebral prosthesis comprising: an upper component adapted to engage an upper vertebra; a lower component adapted to engage a lower vertebra; a row of pillars disposed on at least one of the upper component or the lower component, the row of pillars adapted to enter a groove formed in the upper vertebra or the lower vertebra and wherein the upper component and the lower component are adapted to engage each other or an intermediate member to form an articulate joint between the vertebrae.
Claim 3
Dependent Claim
24 words
2 . The prosthesis of claim 1 wherein the row of pillars includes gaps between the pillars to permit bone growth between the pillars.
Claim 4
Dependent Claim
19 words
3 . The prosthesis of claim 1 wherein the row of pillars comprises from about 5 to 20 pillars.
Claim 5
Dependent Claim
35 words
4 . The prosthesis of claim 1 wherein each pillar of the row has a base attached to the first component or the second component, and each pillar extends from the base to a tip.
Claim 6
Dependent Claim
21 words
5 . The prosthesis of claim 1 wherein each pillar has a height and several pillars have substantially the same height.
Claim 7
Dependent Claim
45 words
6 . The prosthesis of claim 1 wherein each pillar has a maximum cross sectional width at a base of the pillar and a height of the pillar from the base to the tip is at least the maximum cross sectional width at the base.
Claim 8
Dependent Claim
26 words
7 . The prosthesis of claim 1 wherein the row of pillars includes pillars of increasing height along the row to facilitate insertion into the groove.
Claim 9
Dependent Claim
26 words
8 . The prosthesis of claim 1 wherein at least some of the pillars have a tapered cross sectional width which increases in a proximal direction.
Claim 10
Dependent Claim
23 words
9 . The prosthesis of claim 8 wherein the at least some of the pillars have a vertical recess on a distal surface.
Claim 11
Dependent Claim
19 words
10 . The prosthesis of claim 9 wherein at least some of the pillars have a similar cross-sectional geometry.
Claim 12
Dependent Claim
16 words
11 . The prosthesis of claim 9 wherein at least some of the pillars extend vertically.
Claim 13
Dependent Claim
16 words
12 . The prosthesis of claim 9 wherein at least some of the pillars are inclined.
Claim 14
Dependent Claim
80 words
13 . An intervertebral prosthesis comprising: an upper component having a row of upper pillars disposed thereon, the upper row of pillars arranged to enter a groove in an upper vertebra; a lower component having a row of lower pillars disposed thereon, the lower row of pillars arranged to enter a groove in a lower vertebra; and wherein the upper component and the lower component are adapted to engaged each other or an intermediate member to form an articulate joint.
Claim 15
Dependent Claim
80 words
13 . An intervertebral prosthesis comprising: an upper component having a row of upper pillars disposed thereon, the upper row of pillars arranged to enter a groove in an upper vertebra; a lower component having a row of lower pillars disposed thereon, the lower row of pillars arranged to enter a groove in a lower vertebra; and wherein the upper component and the lower component are adapted to engaged each other or an intermediate member to form an articulate joint.
Claim 16
Dependent Claim
21 words
14 . The prosthesis of claim 13 wherein the rows of pillars include gaps to permit bone growth between the pillars.
Claim 17
Dependent Claim
17 words
15 . The prosthesis of claim 13 wherein each row has from about 5 to 20 pillars.
Claim 18
Dependent Claim
28 words
16 . The prosthesis of claim 13 wherein at least one row of pillars includes pillars of increasing height along the row to facilitate insertion into the groove.
Claim 19
Dependent Claim
32 words
17 . The prosthesis of claim 13 wherein each pillar of the upper row has a base attached to the upper component, and each pillar extends from the base to a tip.
Claim 20
Dependent Claim
24 words
18 . The prosthesis of claim 13 wherein at least one component includes two rows of pillars adapted to enter two parallel vertebral grooves.
Claim 21
Dependent Claim
24 words
19 . The prosthesis of claim 13 wherein each of several pillars has a tapered cross sectional width which increases in a proximal direction.
Claim 22
Dependent Claim
21 words
20 . The prosthesis of claim 13 wherein the rows of pillars are offset from each other to avoid vertebral splitting.
Claim 23
Dependent Claim
34 words
21 . The prosthesis of claim 20 wherein the prosthesis comprises a midline, and each row is disposed on an opposite side of the midline to offset the upper row from the lower row.
Claim 24
Dependent Claim
54 words
22 . The prosthesis of claim 20 wherein the prosthesis comprises a midline and wherein one of the components has two rows of pillars with each row disposed on opposite sides of the midline and the other component has a single row of pillars disposed on the midline so that the rows are offset.
Claim 25
Dependent Claim
63 words
23 . A method for anchoring an intervertebral prosthesis within an intervertebral space between a pair of vertebral bodies, said method comprising: cutting a groove in at least one of the vertebral bodies; and introducing the prosthesis into the intervertebral space so that a plurality of pillars on the prosthesis enters the groove to anchor the prosthesis to the at least one vertebrae.
Claim 26
Dependent Claim
63 words
23 . A method for anchoring an intervertebral prosthesis within an intervertebral space between a pair of vertebral bodies, said method comprising: cutting a groove in at least one of the vertebral bodies; and introducing the prosthesis into the intervertebral space so that a plurality of pillars on the prosthesis enters the groove to anchor the prosthesis to the at least one vertebrae.
Claim 27
Dependent Claim
17 words
24 . The method as in claim 23 , wherein the prosthesis comprises components arranged to articulate.
Claim 28
Dependent Claim
29 words
25 . The method as in claim 23 wherein the plurality of pillars that enters the groove comprises from about 5 to 20 pillars adapted to enter the groove.
Claim 29
Dependent Claim
23 words
26 . The method as in claim 23 further comprising releasing the prosthesis to articulate while the pillars are introduced into the groove.
Claim 30
Dependent Claim
29 words
27 . The method of claim 25 wherein cutting comprises cutting a groove in each of the vertebral bodies so that each vertebral body is adapted to receive pillars.
Claim 31
Dependent Claim
108 words
28 . An improved intervertebral prosthesis of the type including a first component adapted to engage a first vertebra, a second component adapted to engage a second vertebra, and an anchor on at least one of the first and second components which is axially oriented over a length of the component and is adapted to enter a groove formed in at least one of the vertebrae, the improvement comprising a plurality of axially aligned, spaced-apart anchors distributed over the length on the at least one component, wherein the plurality of anchors provide an increased surface area to receive and engage new bone growth relative to a single anchor.
Claim 32
Dependent Claim
108 words
28 . An improved intervertebral prosthesis of the type including a first component adapted to engage a first vertebra, a second component adapted to engage a second vertebra, and an anchor on at least one of the first and second components which is axially oriented over a length of the component and is adapted to enter a groove formed in at least one of the vertebrae, the improvement comprising a plurality of axially aligned, spaced-apart anchors distributed over the length on the at least one component, wherein the plurality of anchors provide an increased surface area to receive and engage new bone growth relative to a single anchor.
Claim 33
Dependent Claim
34 words
29 . The prosthesis of claim 28 wherein the plurality of anchors are disposed over a distance, and the plurality of anchors have increased surface area relative to the single anchor along the distance.
Claim 34
Dependent Claim
38 words
30 . The prosthesis of claim 28 wherein the anchors are disposed on the first component and the second component and the anchors are adapted to enter a groove formed in each of the first and second vertebrae.
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