Patent JPS61136714A successfully refreshed from Google Patents.
US6575981B1
Expired / Lapsed
US
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Methods and instrumentation for vertebral interbody fusion
Assignee: Warsaw Orthopedic Inc
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Filing: 2000-02-04
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Granted: 2003-06-10
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Expires: 2020-02-04
Abstract
Abstract A method and instrumentation particularly adapted for disc space preparation from an anterior approach to the spine. The invention provides an improved guide sleeve defining a channel having overlapping cylindrical working channel portions and lateral non-distracting extensions extending from reduced thickness wall portions. The guide sleeve has an overall reduced width configuration adjacent the distal end due to the overlapping working channel portions and reduced thickness wall portions. A pair of distractors are provided. A first distractor includes a shaft and distal tip, each having convex walls. A second distractor includes a shaft and distal tip including a recessed area at least along the tip. The first distractor is at least partially received within the recessed area of the second distractor when the first and second distractors are in side-by-side relation and a reduced overall width of the distractors is obtained. Preferably, the first and second distractors are used with the guide sleeve. A method of using the disclosed instruments is also provided.
Inventors
- 👤 Lawrence M. Boyd
- 👤 Eddie F. Ray
- 👤 Bradley T. Estes
- 👤 J. Kenneth Burkus
- 👤 John D. Dorchak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:04
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/02; A61B17/025; A61B17/16; A61B17/1662; A61B17/1671; A61B17/17; A61B17/1739; A61B17/1757; A61B90/00; A61B90/90; A61B90/94; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/44; A61F2/4455; A61F2/446; A61F2/46; A61F2/4603; A61F2/4611; A61B17/1735; A61B2017/0256; A61B90/03; A61B2090/033; A61B2090/034; A61F2/442; A61F2002/30001; A61F2002/30316; A61F2002/30535; A61F2002/30593; A61F2002/30604; A61F2/30767; A61F2/30771; A61F2002/3082; A61F2002/3085; A61F2002/30871; A61F2002/30904; A61F2002/448; A61F2002/4625; A61F2002/4627; A61F2002/4681; A61F2002/4687; A61F2250/00; A61F2250/0058; A61F2250/006; A61F2250/0063
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
118 words
A surgical instrument for distracting a spinal disc space, comprising: a distractor having a length and including: a shaft and a first distractor tip at a distal end of said shaft, said first distractor tip including: a first surface and an opposite second surface defining a distraction height; a recessed area extending between said first and second surfaces along at least a portion of said length; and a surface opposite said recessed area, wherein said distractor tip includes a width between said recessed area and said opposite surface sized to substantially occupy an implant insertion location of a generally cylindrical implant in the spinal disc space having a cross-sectional dimension at least as great as said distraction height.
Claim 2
Dependent Claim
118 words
A surgical instrument for distracting a spinal disc space, comprising: a distractor having a length and including: a shaft and a first distractor tip at a distal end of said shaft, said first distractor tip including: a first surface and an opposite second surface defining a distraction height; a recessed area extending between said first and second surfaces along at least a portion of said length; and a surface opposite said recessed area, wherein said distractor tip includes a width between said recessed area and said opposite surface sized to substantially occupy an implant insertion location of a generally cylindrical implant in the spinal disc space having a cross-sectional dimension at least as great as said distraction height.
Claim 3
Dependent Claim
34 words
The instrument of claim 1 , wherein said shaft includes a recessed area adjacent to and coplanar with said recessed area of said distractor tip along a portion of a length of said shaft.
Claim 4
Dependent Claim
30 words
The instrument of claim 2 , wherein said recessed area of said distractor tip and said recessed area of said shaft extend along substantially the entire length of said distractor.
Claim 5
Dependent Claim
13 words
The instrument of claim 2 , wherein said recessed areas are concave surfaces.
Claim 6
Dependent Claim
14 words
The instrument of claim 1 , wherein said recessed area is a concave surface.
Claim 7
Dependent Claim
17 words
The instrument of claim 1 , wherein said first surface and said second surface are substantially parallel.
Claim 8
Dependent Claim
18 words
The instrument of claim 6 , wherein said first surface and said second surface are each substantially planar.
Claim 9
Dependent Claim
22 words
The instrument of claim 1 , wherein said recessed area is configured to permit rotation of a surgical device positioned adjacent thereto.
Claim 10
Dependent Claim
16 words
The instrument of claim 1 , wherein said distractor tip is integrally formed with said shaft.
Claim 11
Dependent Claim
21 words
The instrument of claim 1 , wherein said recessed area is a concave surface extending between said first and second surfaces.
Claim 12
Dependent Claim
14 words
The instrument of claim 10 , wherein said opposite surface is a convex surface.
Claim 13
Dependent Claim
22 words
The instrument of claim 1 , wherein said distractor tip includes a rounded leading end extending between said first and second surfaces.
Claim 14
Dependent Claim
36 words
The instrument of claim 1 , wherein said distractor tip includes a rounded leading end and a pair of opposing inclined surfaces extending away from one another to respective ones of said first and second surfaces.
Claim 15
Dependent Claim
17 words
The instrument of claim 13 , wherein said first surface and said second surface are substantially parallel.
Claim 16
Dependent Claim
18 words
The instrument of claim 14 , wherein said first surface and said second surface are each substantially planar.
Claim 17
Dependent Claim
140 words
A surgical instrument for distracting a spinal disc space, comprising: a distractor having a length and including: a shaft and a first distractor tip at a distal end of said shaft, said distractor tip including: a first surface and an opposite second surface defining a distraction height; a recessed area extending between said first and second surfaces along at least a portion of said length; a surface opposite said recessed area, wherein said distractor tip includes a width between said recessed area and said opposite surface sized to substantially occupy an implant insertion location of a generally cylindrical implant in the spinal disc space having a cross-section dimension at least as great as said distraction height; and said shaft including a recessed area forming an extension of said recessed area of said distractor tip along another portion of said length.
Claim 18
Dependent Claim
140 words
A surgical instrument for distracting a spinal disc space, comprising: a distractor having a length and including: a shaft and a first distractor tip at a distal end of said shaft, said distractor tip including: a first surface and an opposite second surface defining a distraction height; a recessed area extending between said first and second surfaces along at least a portion of said length; a surface opposite said recessed area, wherein said distractor tip includes a width between said recessed area and said opposite surface sized to substantially occupy an implant insertion location of a generally cylindrical implant in the spinal disc space having a cross-section dimension at least as great as said distraction height; and said shaft including a recessed area forming an extension of said recessed area of said distractor tip along another portion of said length.
Claim 19
Dependent Claim
30 words
The instrument of claim 16 , wherein said recessed area of said distractor tip and said recessed area of said shaft extend along substantially the entire length of said distractor.
Claim 20
Dependent Claim
13 words
The instrument of claim 17 , wherein said recessed areas are concave surfaces.
Claim 21
Dependent Claim
13 words
The instrument of claim 16 , wherein said recessed areas are concave surfaces.
Claim 22
Dependent Claim
22 words
The instrument of claim 16 , wherein said recessed areas are configured to permit rotation of a surgical device positioned adjacent thereto.
Claim 23
Dependent Claim
24 words
The instrument of claim 16 , wherein said recessed areas are each formed by a concave surface extending between said first and second surfaces.
Claim 24
Dependent Claim
37 words
The instrument of claim 16 , wherein said first distractor tip includes a rounded leading end and a pair of opposing inclined surfaces extending away from one another to respective ones of said first and second surfaces.
Claim 25
Dependent Claim
17 words
The instrument of claim 22 , wherein said first surface and said second surface are substantially parallel.
Claim 26
Dependent Claim
18 words
The instrument of claim 22 , wherein said first surface and said second surface are each substantially planar.
Claim 27
Dependent Claim
17 words
The instrument of claim 16 , wherein said surface opposite said recessed area is a convex surface.
Claim 28
Dependent Claim
109 words
A surgical instrument for distracting a spinal disc space, comprising: a distractor having a length and including: a shaft and a first distractor tip at a distal end of said shaft, said distractor tip including: a first surface and an opposite second surface defining a distraction height; a concave surface extending between said first and second surfaces; and a surface opposite said concave surface, wherein said distractor tip includes a width between said concave surface and said opposite surface sized to substantially occupy an implant insertion location of a generally cylindrical implant in the spinal disc space having a cross-sectional dimension at least as great as said distraction height.
Claim 29
Dependent Claim
109 words
A surgical instrument for distracting a spinal disc space, comprising: a distractor having a length and including: a shaft and a first distractor tip at a distal end of said shaft, said distractor tip including: a first surface and an opposite second surface defining a distraction height; a concave surface extending between said first and second surfaces; and a surface opposite said concave surface, wherein said distractor tip includes a width between said concave surface and said opposite surface sized to substantially occupy an implant insertion location of a generally cylindrical implant in the spinal disc space having a cross-sectional dimension at least as great as said distraction height.
Claim 30
Dependent Claim
25 words
The surgical instrument of claim 26 , wherein said shaft includes a concave surface forming an extension of said concave surface of said distractor tip.
Claim 31
Dependent Claim
30 words
The instrument of claim 27 , wherein said concave surface of said distractor tip and said concave surface of said shaft extend along substantially the entire length of said distractor.
Claim 32
Dependent Claim
14 words
The instrument of claim 26 , wherein said opposite surface is a convex surface.
Claim 33
Dependent Claim
37 words
The instrument of claim 26 , wherein said first distractor tip includes a rounded leading end and a pair of opposing inclined surfaces extending away from one another to respective ones of said first and second surfaces.
Claim 34
Dependent Claim
17 words
The instrument of claim 30 , wherein said first surface and said second surface are substantially parallel.
Claim 35
Dependent Claim
18 words
The instrument of claim 30 , wherein said first surface and said second surface are each substantially planar.
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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) | 2006-06-09 | 2006-12-09 | 2007-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-06-09 | 2010-12-09 | 2011-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-06-09 | 2014-12-09 | 2015-06-10 | $7700.00 | Window Closed / Lapsed |