Patent US6565574B2 successfully refreshed from Google Patents.
US6565574B2
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Distractor for use in spinal surgery
Assignee: Warsaw Orthopedic Inc
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Filing: 2001-01-23
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Granted: 2003-05-20
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Expires: 2021-01-23
Abstract
Abstract A distractor for use in spinal surgery for urging two adjacent vertebral bodies apart is disclosed. The distractor includes a disc penetrating portion having a hollow with an open leading end configured to facilitate insertion of the distractor into at least a portion of the disc space. The hollow is adapted to contain disc material within the extension as the distractor is being inserted at least in part between the adjacent vertebral bodies.
Inventors
- 👤 Gary K. Michelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:51
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/88; A61B17/885; A61B17/02; A61B17/025; A61B17/16; A61B17/17; A61B17/1739; A61B17/1757; A61B90/00; A61B90/39; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/44; A61F2/4455; A61F2/447; A61F2/46; A61F2/4601; A61F2/4603; A61F2/4611; A61B17/1604; A61B17/1662; A61B17/1671; A61B17/00234; A61B2017/00238; A61B2017/0046; A61B2017/00464; A61B2017/0256; A61B90/08; A61B2090/0801; A61B2090/08021; A61B2090/3937; A61B2090/395; A61F2/28; A61F2/30721; A61F2/30744; A61F2/3094; A61F2/442; A61F2/4637; A61F2002/2817; A61F2002/30001; A61F2002/30108; A61F2002/3011; A61F2002/30138; A61F2002/30153; A61F2002/30158; A61F2002/30199; A61F2002/30261; A61F2002/30266; A61F2002/3028; A61F2002/30281; A61F2002/30316; A61F2002/30535; A61F2002/30593; A61F2/30767; A61F2/30771; A61F2002/30772; A61F2002/30777; A61F2002/30784; A61F2002/30785; A61F2002/30787; A61F2002/30789; A61F2002/30841; A61F2002/30845; A61F2002/30878; A61F2002/30879; A61F2002/30884; A61F2002/30891; A61F2002/30892; A61F2002/30904; A61F2002/448; A61F2002/4625; A61F2002/4627; A61F2002/4681; A61F2002/4687; A61F2230/00; A61F2230/0002; A61F2230/0017; A61F2230/0019; A61F2230/0026; A61F2230/0063; A61F2230/0082; A61F2230/0086; A61F2310/00; A61F2310/00005; A61F2310/00179; A61F2310/00293; A61F2310/00341
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
133 words
A distractor for use in urging adjacent vertebral endplates of two adjacent vertebral bodies apart, comprising: a body; and a disc penetrating extension extending from said body for insertion between the adjacent vertebral bodies, said extension having upper and lower portions adapted to bear against the adjacent vertebral endplates of the adjacent vertebral bodies and opposed side portions between said upper and lower portions, said disc penetrating extension having a leading end with an opening into a hollow adapted to contain disc material within said extension, said opening of said leading end having a maximum height between said upper and lower portions that is greater than a combined thickness of said upper and lower portions, said body having a portion configured to limit the insertion of said extension between the adjacent vertebral bodies.
Claim 2
Dependent Claim
133 words
A distractor for use in urging adjacent vertebral endplates of two adjacent vertebral bodies apart, comprising: a body; and a disc penetrating extension extending from said body for insertion between the adjacent vertebral bodies, said extension having upper and lower portions adapted to bear against the adjacent vertebral endplates of the adjacent vertebral bodies and opposed side portions between said upper and lower portions, said disc penetrating extension having a leading end with an opening into a hollow adapted to contain disc material within said extension, said opening of said leading end having a maximum height between said upper and lower portions that is greater than a combined thickness of said upper and lower portions, said body having a portion configured to limit the insertion of said extension between the adjacent vertebral bodies.
Claim 3
Dependent Claim
30 words
The distractor of claim 1 , wherein said portion of said body includes a shoulder adapted to conform at least in part to an exterior of the adjacent vertebral bodies.
Claim 4
Dependent Claim
30 words
The distractor of claim 1 , wherein said upper and lower portions and said opposed side portions of said extension form one of a rectangular cross-section and a circular cross-section.
Claim 5
Dependent Claim
18 words
The distractor of claim 1 , wherein said body and said extension are detachably connected to one another.
Claim 6
Dependent Claim
27 words
The distractor of claim 4 , further comprising a plurality of variously sized extensions, each of said extensions being configured to be detachably attachable to said body.
Claim 7
Dependent Claim
16 words
The distractor of claim 1 , wherein said leading end of said extension has sharpened surface.
Claim 8
Dependent Claim
18 words
The distractor of claim 1 , wherein said extension has a portion that converges away from said body.
Claim 9
Dependent Claim
18 words
The distractor of claim 1 , wherein said extension has a portion that diverges away from said body.
Claim 10
Dependent Claim
26 words
The distractor of claim 1 , wherein said extension is tapered to facilitate insertion of said extension at least in part between the adjacent vertebral bodies.
Claim 11
Dependent Claim
41 words
The distractor of claim 1 , wherein said extension has a trailing end, said leading end of said extension having a height between said upper and lower portions that is less than a height of said trailing end of said extension.
Claim 12
Dependent Claim
22 words
The distractor of claim 10 , wherein the height of said leading end of said extension is approximately 4 to 16 mm.
Claim 13
Dependent Claim
22 words
The distractor of claim 10 , wherein the height of said trailing end of said extension is approximately 7 to 20 mm.
Claim 14
Dependent Claim
25 words
The distractor of claim 1 , wherein said extension has a length of approximately 15-30 mm for use from an anterior approach to the spine.
Claim 15
Dependent Claim
25 words
The distractor of claim 1 , wherein said extension has a length of approximately 15-42 mm for use from a lateral approach to the spine.
Claim 16
Dependent Claim
21 words
The distractor of claim 1 , wherein said body has a trailing end configured to cooperatively engage with an impaction cap.
Claim 17
Dependent Claim
16 words
The distractor of claim 1 , wherein said body has a trailing end including a handle.
Claim 18
Dependent Claim
134 words
A distractor for use in urging adjacent vertebral endplates of two adjacent vertebral bodies apart, comprising: a body; and a disc penetrating extension extending from said body for insertion between the adjacent vertebral bodies, said extension having upper and lower portions adapted to bear against the adjacent vertebral endplates of the adjacent vertebral bodies and opposed side portions between said upper and lower portions, said upper and lower portions being angled relative to one another to induce lordosis between the adjacent vertebral bodies, said disc penetrating extension having a leading end with an opening into a hollow adapted to contain disc material within said extension, said opening of said leading end having a maximum height between said upper and lower portions that is greater than a combined thickness of said upper and lower portions.
Claim 19
Dependent Claim
134 words
A distractor for use in urging adjacent vertebral endplates of two adjacent vertebral bodies apart, comprising: a body; and a disc penetrating extension extending from said body for insertion between the adjacent vertebral bodies, said extension having upper and lower portions adapted to bear against the adjacent vertebral endplates of the adjacent vertebral bodies and opposed side portions between said upper and lower portions, said upper and lower portions being angled relative to one another to induce lordosis between the adjacent vertebral bodies, said disc penetrating extension having a leading end with an opening into a hollow adapted to contain disc material within said extension, said opening of said leading end having a maximum height between said upper and lower portions that is greater than a combined thickness of said upper and lower portions.
Claim 20
Dependent Claim
25 words
The distractor of claim 17 , wherein said body has a portion configured to limit the insertion of said extension between the adjacent vertebral bodies.
Claim 21
Dependent Claim
30 words
The distractor of claim 17 , wherein said portion of said body includes a shoulder adapted to conform at least in part to an exterior of the adjacent vertebral bodies.
Claim 22
Dependent Claim
30 words
The distractor of claim 17 , wherein said upper and lower portions and said opposed side portions of said extension form one of a rectangular cross-section and a circular cross-section.
Claim 23
Dependent Claim
16 words
The distractor of claim 17 , wherein said leading end of said extension has sharpened surface.
Claim 24
Dependent Claim
22 words
The distractor of claim 17 , wherein said leading end of said extension has a height of approximately 4 to 16 mm.
Claim 25
Dependent Claim
28 words
The distractor of claim 17 , wherein said extension has a trailing end, said trailing end of said extension having a height of approximately 7 to 20 mm.
Claim 26
Dependent Claim
25 words
The distractor of claim 17 , wherein said extension has a length of approximately 15-30 mm for use from an anterior approach to the spine.
Claim 27
Dependent Claim
25 words
The distractor of claim 17 , wherein said extension has a length of approximately 15-42 mm for use from a lateral approach to the spine.
Claim 28
Dependent Claim
21 words
The distractor of claim 17 , wherein said body has a trailing end configured to cooperatively engage with an impaction cap.
Claim 29
Dependent Claim
16 words
The distractor of claim 17 , wherein said body has a trailing end including a handle.
Claim 30
Dependent Claim
18 words
The distractor of claim 17 , wherein said body and said extension are detachably connected to one another.
Claim 31
Dependent Claim
27 words
The distractor of claim 28 , further comprising a plurality of variously sized extensions, each of said extensions being configured to be detachably attachable to said body.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2006-05-19 | 2006-11-18 | 2007-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-05-19 | 2010-11-18 | 2011-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-05-19 | 2014-11-18 | 2015-05-20 | $7700.00 | Window Closed / Lapsed |