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US7128761B2
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US
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Method and apparatus for replacing a damaged spinal disc
Assignee: AXIOMED LLC
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Filing: 2003-12-10
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Granted: 2006-10-31
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Expires: 2023-12-10
Abstract
Abstract An apparatus for replacing a damaged spinal disc in a spinal column includes a resilient core having a first surface and a second surface. A first retaining device is connected to the first surface of the resilient core. The first retaining device includes an outer surface engageable with a first vertebra of the spinal column and an inner surface facing the first surface of the resilient core. A second retaining device is connected to the second surface of the resilient core. The second retaining device has an outer surface engageable with a second vertebra of the spinal column and an inner surface facing the second surface of the resilient core. The inner surface of the first retaining device is spaced from the core. The core deflects into engagement with the inner surface of the first retaining device upon relative movement between the first and second retaining devices.
Inventors
- 👤 James M. Kuras
- 👤 Lee Strnad
- 👤 Keith Duke
- 👤 Kari Zimmers
- 👤 Edward C. Benzel
- 👤 Isador H. Lieberman
- 👤 Raymond S. Ross
- 👤 Charles F. Birchall, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:13
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/46; A61F2/4603; A61F2/4611; A61F2/44; A61F2/442; A61F2/4425; A61B; A61B17/00; A61B17/02; A61B17/025; A61B2017/0256; A61F2002/30001; A61F2002/30003; A61F2002/3006; A61F2002/30069; A61F2002/30316; A61F2002/30329; A61F2002/30383; A61F2002/30387; A61F2002/30448; A61F2002/30476; A61F2002/305; A61F2002/30507; A61F2002/30535; A61F2002/30579; A61F2002/30604; A61F2002/30617; A61F2/30767; A61F2002/30769; A61F2/30771; A61F2002/30841; A61F2002/30878; A61F2002/30879; A61F2002/30925; A61F2002/443; A61F2002/4622; A61F2002/4625; A61F2002/4628; A61F2002/4681; A61F2220/00; A61F2220/0025; A61F2220/005; A61F2250/00; A61F2250/0058; A61F2250/0096; A61F2250/0097; A61F2310/00; A61F2310/00005; A61F2310/00011; A61F2310/00023
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
158 words
An apparatus for replacing a damaged spinal disc in a spinal column, said apparatus comprising: a resilient core having a first surface and a second surface; a first retaining device fixedly attached to said first surface of said resilient core, said first retaining device having an outer surface engageable with a first vertebra of the spinal column and an inner surface opposed to said first surface of said resilient core; and a second retaining device fixedly connected to said second surface of said resilient core, said second retaining device having an outer surface engageable with a second vertebra of the spinal column and an inner surface opposed to said second surface of said resilient core; said inner surface of said first retaining device being spaced from said core and defining a substantially enclosed space, said core deflecting into engagement with said inner surface of said first retaining device upon relative movement between said first and second retaining devices.
Claim 2
Independent Claim
158 words
An apparatus for replacing a damaged spinal disc in a spinal column, said apparatus comprising: a resilient core having a first surface and a second surface; a first retaining device fixedly attached to said first surface of said resilient core, said first retaining device having an outer surface engageable with a first vertebra of the spinal column and an inner surface opposed to said first surface of said resilient core; and a second retaining device fixedly connected to said second surface of said resilient core, said second retaining device having an outer surface engageable with a second vertebra of the spinal column and an inner surface opposed to said second surface of said resilient core; said inner surface of said first retaining device being spaced from said core and defining a substantially enclosed space, said core deflecting into engagement with said inner surface of said first retaining device upon relative movement between said first and second retaining devices.
Claim 3
Dependent Claim
51 words
An apparatus as defined in claim 1 wherein said inner surface of said second retaining device is spaced from said core and defines a substantially enclosed space, said core deflecting into engagement with said inner surface of said second retaining device upon relative movement between said first and second retaining devices.
Claim 4
Dependent Claim
87 words
An apparatus as defined in claim 1 wherein said core includes a radially outer surface extending between said first and second surfaces of said core, said radially outer surface facing a portion of one of said first and second retaining devices, said radially outer surface being spaced from said portion of said one of said first and second retaining devices, said core deflecting into engagement with said portion of one of said first and second retaining devices upon relative movement between said first and second retaining devices.
Claim 5
Dependent Claim
109 words
An apparatus as defined in claim 3 wherein said radially outer surface of said core faces a portion of said first retaining device, said radially outer surface being spaced from said portion of said first retaining device, said core deflecting into engagement with said portion of said first retaining device upon relative movement between said first and second retaining devices, said radially outer surface facing a portion of said second retaining device, said radially outer surface being spaced from said portion of said second retaining device, said core deflecting into engagement with said portion of said second retaining device upon relative movement between said first and second retaining devices.
Claim 6
Dependent Claim
64 words
An apparatus as defined in claim 1 wherein one of said first and second retaining devices includes a flange extending toward another of said first and second retaining devices, said flange having a radially inner surface facing said core and spaced from said core, said core deflecting into engagement with said radially inner surface upon relative movement between said first and second retaining devices.
Claim 7
Dependent Claim
110 words
An apparatus as defined in claim 1 wherein said first retaining device includes a flange extending toward said second retaining device, said core deflecting into engagement with said radially inner surface of said flange of said first retaining device upon relative movement between said first and second retaining devices, said second retaining device including a flange extending toward said first retaining device, said flange of said second retaining device having a radially inner surface facing said core and spaced from said core, said core deflecting into engagement with said radially inner surface of said flange of said second retaining device upon relative movement between said first and second retaining devices.
Claim 8
Independent Claim
160 words
An apparatus for replacing a damaged spinal disc in a spinal column, said apparatus comprising: a resilient core having a first surface and a second surface; a first retaining device fixedly attached to said first surface of said resilient core, said first retaining device having an outer surface engageable with a first vertebra of the spinal column and an inner surface facing said first surface of said resilient core; and a second retaining device fixedly connected to said second surface of said resilient core, said second retaining device having an outer surface engageable with a second vertebra of the spinal column and an inner surface facing said second surface of said resilient core; said inner surface of said first retaining device being spaced from said core, said core deflecting into engagement with said inner surface of said first retaining device upon relative movement between said first and second retaining devices; said inner surface of said first retaining device being concave.
Claim 9
Independent Claim
160 words
An apparatus for replacing a damaged spinal disc in a spinal column, said apparatus comprising: a resilient core having a first surface and a second surface; a first retaining device fixedly attached to said first surface of said resilient core, said first retaining device having an outer surface engageable with a first vertebra of the spinal column and an inner surface facing said first surface of said resilient core; and a second retaining device fixedly connected to said second surface of said resilient core, said second retaining device having an outer surface engageable with a second vertebra of the spinal column and an inner surface facing said second surface of said resilient core; said inner surface of said first retaining device being spaced from said core, said core deflecting into engagement with said inner surface of said first retaining device upon relative movement between said first and second retaining devices; said inner surface of said first retaining device being concave.
Claim 10
Independent Claim
218 words
An apparatus for replacing a damaged spinal disc in a spinal column, said apparatus comprising: a resilient core having a first surface and a second surface; a first retaining device attached to said first surface of said resilient core, said first retaining device having an outer surface engageable with a first vertebra of the spinal column and an inner surface facing said first surface of said resilient core; and a second retaining device fixedly connected to said second surface of said resilient core, said second retaining device having an outer surface engageable with a second vertebra of the spinal column and an inner surface facing said second surface of said resilient core; said inner surface of said first retaining device being spaced from said core, said core deflecting into engagement with said inner surface of said first retaining device upon relative movement between said first and second retaining devices; said first retaining device including a first mounting member engageable with the first vertebra and a first retaining member, said first retaining member having said outer surface engageable with the first vertebra and an inner surface affixed to said first surface of said core, said first mounting member including said inner surface facing said core that said core engages upon relative movement between said first and second retaining devices.
Claim 11
Independent Claim
218 words
An apparatus for replacing a damaged spinal disc in a spinal column, said apparatus comprising: a resilient core having a first surface and a second surface; a first retaining device attached to said first surface of said resilient core, said first retaining device having an outer surface engageable with a first vertebra of the spinal column and an inner surface facing said first surface of said resilient core; and a second retaining device fixedly connected to said second surface of said resilient core, said second retaining device having an outer surface engageable with a second vertebra of the spinal column and an inner surface facing said second surface of said resilient core; said inner surface of said first retaining device being spaced from said core, said core deflecting into engagement with said inner surface of said first retaining device upon relative movement between said first and second retaining devices; said first retaining device including a first mounting member engageable with the first vertebra and a first retaining member, said first retaining member having said outer surface engageable with the first vertebra and an inner surface affixed to said first surface of said core, said first mounting member including said inner surface facing said core that said core engages upon relative movement between said first and second retaining devices.
Claim 12
Dependent Claim
63 words
An apparatus as defined claim 7 wherein said inner surface of said second retaining device is concave, said second surface of said resilient core being convex, said inner surface of said second retaining device being spaced from said core, said core deflecting into engagement with said inner surface of said second retaining device upon relative movement between said first and second retaining devices.
Claim 13
Dependent Claim
32 words
An apparatus as defined in claim 1 wherein said first retaining device includes a portion engageable with a surgical tool for inserting said first retaining device between the first and second vertebrae.
Claim 14
Dependent Claim
32 words
An apparatus as defined in claim 10 wherein said second retaining device includes a portion engageable with the surgical tool for inserting said second retaining device between the first and second vertebrae.
Claim 15
Dependent Claim
27 words
An apparatus as defined in claim 10 wherein said portion of said first retaining device includes an opening into which a portion of the surgical tool extends.
Claim 16
Dependent Claim
28 words
An apparatus as defined in claim 12 wherein said second retaining device includes a portion with an opening into which a second portion of the surgical tool extends.
Claim 17
Dependent Claim
36 words
An apparatus as defined in claim 8 wherein said first retaining member has an opening extending through said inner and outer surfaces of said first retaining member, said first mounting member being located in said opening.
Claim 18
Dependent Claim
51 words
An apparatus as defined in claim 8 wherein one of said first retaining member and said first mounting member includes a guide engageable with another of said first retaining member and said first mounting member to guide movement of said first retaining member into position between the first and second vertebrae.
Claim 19
Dependent Claim
17 words
An apparatus as defined in claim 14 wherein said opening extends axially through said first retaining member.
Claim 20
Dependent Claim
19 words
An apparatus as defined in claim 8 wherein said first mounting member is connected to said first retaining member.
Claim 21
Dependent Claim
22 words
An apparatus as defined in claim 17 wherein said first mounting member is prevented from moving relative to said first retaining member.
Claim 22
Dependent Claim
23 words
An apparatus as defined in claim 18 wherein said first mounting member is connected to said first retaining member with an interference fit.
Claim 23
Dependent Claim
25 words
An apparatus as defined in claim 19 wherein said first mounting member has a frustoconical surface engaging a frustoconical surface on said first retaining member.
Claim 24
Dependent Claim
100 words
An apparatus as defined in claim 8 wherein said second retaining device includes a second mounting member engageable with the second vertebra and a second retaining member, said second retaining member having said outer surface engageable with the second vertebra and an inner surface affixed to said second surface of said core, said second mounting member including said inner surface facing said core, said inner surface of said second mounting member being spaced from said core, said core deflecting into engagement with said inner surface of said second mounting member upon relative movement between said first and second retaining devices.
Claim 25
Dependent Claim
74 words
An apparatus as defined in claim 21 wherein said first retaining member has an opening extending through said inner and outer surfaces of said first retaining member, said first mounting member being located in said opening in said first retaining member, said second retaining member having an opening extending through said inner and outer surfaces of said second retaining member, said second mounting member being located in said opening in said second retaining member.
Claim 26
Dependent Claim
94 words
An apparatus as defined in claim 21 wherein one of said first retaining member and said first mounting member includes a guide engageable with another of said first retaining member and said first mounting member to guide movement of said first retaining member into position between the first and second vertebrae, one of said second retaining member and said second mounting member including a guide engageable with another of said second retaining member and said second mounting member to guide movement of said second retaining member into position between the first and second vertebrae.
Claim 27
Dependent Claim
36 words
An apparatus as defined in claim 22 wherein said opening in said first retaining member extends axially through said first retaining member, said opening in said second retaining member extending axially through said second retaining member.
Claim 28
Dependent Claim
31 words
An apparatus as defined in claim 21 wherein said first mounting member is connected to said first retaining member and said second mounting member is connected to said second retaining member.
Claim 29
Dependent Claim
26 words
An apparatus as defined in claim 25 wherein said first and second mounting members are prevented from moving relative to said first and second retaining members.
Claim 30
Dependent Claim
38 words
An apparatus as defined in claim 26 wherein said first mounting member is connected to said first retaining member with an interference fit, said second mounting member being connected to said second retaining member with an interference fit.
Claim 31
Dependent Claim
42 words
An apparatus as defined in claim 27 wherein said first mounting member has a frustoconical surface engaging a frustoconical surface on the first retaining member, said second mounting member having a frustoconical surface engaging a frustoconical surface on the second retaining member.
References Cited (Backward Citations)
US3494365A
Cited
US3681787A
Cited
US4773909A
Cited
US4932969A
Cited
US4863477A
Cited
US4950291A
Cited
US4911718A
Cited
US5545229A
Cited
US5092881A
Cited
US5092882A
Cited
JPH04106035A
Cited
US5320644A
Cited
US5401269A
Cited
US5370697A
Cited
US5370688A
Cited
US5480430A
Cited
US5571109A
Cited
US5674294A
Cited
US5480429A
Cited
US6156067A
Cited
US5676702A
Cited
US5893889A
Cited
US5902335A
Cited
US5824094A
Cited
US6419706B1
Cited
US6296664B1
Cited
US6231609B1
Cited
US6527809B1
Cited
US20010016774A1
Cited
US6113638A
Cited
US6402785B1
Cited
US6454806B1
Cited
US20030074076A1
Cited
US6533818B1
Cited
US20020116009A1
Cited
US6607558B2
Cited
US20030074071A1
Cited
US20030045939A1
Cited
US20030135277A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2009-10-30 | 2010-05-01 | 2010-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2013-10-30 | 2014-05-01 | 2014-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2017-10-30 | 2018-05-01 | 2018-10-31 | $7700.00 | Window Closed / Lapsed |