US7500991B2
Expired / Lapsed
US
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Banana cage
Assignee: DePuy Spine LLC
•
Filing: 2002-12-31
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Granted: 2009-03-10
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Expires: 2022-12-31
Abstract
Abstract A banana shaped intevertebral fusion cage having a domed profile, an internal planar wall defining first and second graft chambers, asymmetrically disposed leading and trailing insertion, and an anterior wall recess.
Inventors
- 👤 Charles M. Bartish, Jr.
- 👤 Douglas Scott Bireley
- 👤 Bradley Thomas Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:11
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/46; A61F2/4603; A61F2/4611; A61F2/44; A61F2/4455; A61F2/4465; A61F2/3094; A61F2/30965; A61F2/4684; A61F2/28; A61F2002/2817; A61F2002/2835; A61F2002/30001; A61F2002/30003; A61F2002/3006; A61F2002/30062; A61F2002/30108; A61F2002/3011; A61F2002/30112; A61F2002/30133; A61F2002/30138; A61F2002/30151; A61F2002/30199; A61F2002/30308; A61F2002/30316; A61F2002/30535; A61F2002/30537; A61F2002/30538; A61F2002/30576; A61F2002/30593; A61F2002/30594; A61F2002/30617; A61F2/30767; A61F2/30771; A61F2002/30772; A61F2002/30774; A61F2002/30784; A61F2002/30785; A61F2002/30787; A61F2002/30841; A61F2002/30878; A61F2002/30884; A61F2002/4625; A61F2002/4627; A61F2002/4629; A61F2210/00; A61F2210/0004; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0015; A61F2230/0017; A61F2230/0063; A61F2250/00; A61F2250/0004; A61F2250/0006; A61F2250/0058; A61F2250/0096; A61F2250/0097; A61F2310/00; A61F2310/00005; A61F2310/00179; A61F2310/00293
Claims Analysis
Total Claims: 45
Claim 1
Independent Claim
196 words
An intervertebral fusion device comprising: a) an anterior wall and a posterior wall defining a width therebetween, wherein the anterior wall has a convex shape and the posterior wall has a concave shape to define a banana shape adapted for non-linear insertion from a posterior side of a spine, b) first and second end walls between the anterior and posterior walls and defining a length therebetween, and c) an upper bearing surface and a lower bearing surface, each having a midline having a recessed ridge running in the anterior-posterior direction and bisecting a right and left side of the device, c) a internal planar wall extending transversely from the anterior wall to the posterior wall, and from the upper bearing surface to the lower bearing surface, to define first and second graft chambers, wherein the anterior wall has a middle portion, lateral end portions, each having a maximum height, and the maximum height of the middle portion is greater than the maximum height of the lateral end portions, wherein the width of the device is less than the length of the device, and wherein the length is less than ½ a width of a disc space.
Claim 2
Dependent Claim
196 words
An intervertebral fusion device comprising: a) an anterior wall and a posterior wall defining a width therebetween, wherein the anterior wall has a convex shape and the posterior wall has a concave shape to define a banana shape adapted for non-linear insertion from a posterior side of a spine, b) first and second end walls between the anterior and posterior walls and defining a length therebetween, and c) an upper bearing surface and a lower bearing surface, each having a midline having a recessed ridge running in the anterior-posterior direction and bisecting a right and left side of the device, c) a internal planar wall extending transversely from the anterior wall to the posterior wall, and from the upper bearing surface to the lower bearing surface, to define first and second graft chambers, wherein the anterior wall has a middle portion, lateral end portions, each having a maximum height, and the maximum height of the middle portion is greater than the maximum height of the lateral end portions, wherein the width of the device is less than the length of the device, and wherein the length is less than ½ a width of a disc space.
Claim 3
Dependent Claim
19 words
The device of claim 1 wherein the length is less than one-third of the width of the disc space.
Claim 4
Dependent Claim
25 words
The device of claim 1 wherein a posterior portion of each bearing surface is adapted to bear against an anterior one-third of the disc space.
Claim 5
Dependent Claim
9 words
The device of claim 1 being an integral unit.
Claim 6
Dependent Claim
15 words
The device of claim 1 wherein the posterior wall has a concave horizontal cross section.
Claim 7
Dependent Claim
39 words
The device of claim 1 wherein the anterior wall has a maximum height, the posterior wall has a maximum height, and wherein the maximum height of the anterior wall is greater than the maximum height of the posterior wall.
Claim 8
Dependent Claim
29 words
The device of claim 1 wherein the first end wall is a leading end wall adapted for insertion into the disc space, and the leading end wall is tapered.
Claim 9
Dependent Claim
169 words
An intervertebral fusion device adapted for non-linear insertion into a disc space comprising: a) an anterior wall having a convex shape, b) a posterior wall, c) first and second end walls between the anterior and posterior walls d) an upper bearing surface between the anterior and posterior walls, and having an anterior portion and a posterior portion, and e) a lower bearing surface between the anterior and posterior walls, f) first and second transverse struts extending from the anterior portion of the upper bearing surface to the posterior portion of the upper bearing surface, wherein the anterior wall has a middle portion having a maximum height and lateral end portions each having a maximum height, and the maximum height of the middle portion is greater than the maximum height of the lateral end portions to provide a dome shape, wherein the upper and lower bearing surfaces each have a midline having a recessed ridge running in the anterior-posterior direction and bisecting a right and left side of the device.
Claim 10
Dependent Claim
169 words
An intervertebral fusion device adapted for non-linear insertion into a disc space comprising: a) an anterior wall having a convex shape, b) a posterior wall, c) first and second end walls between the anterior and posterior walls d) an upper bearing surface between the anterior and posterior walls, and having an anterior portion and a posterior portion, and e) a lower bearing surface between the anterior and posterior walls, f) first and second transverse struts extending from the anterior portion of the upper bearing surface to the posterior portion of the upper bearing surface, wherein the anterior wall has a middle portion having a maximum height and lateral end portions each having a maximum height, and the maximum height of the middle portion is greater than the maximum height of the lateral end portions to provide a dome shape, wherein the upper and lower bearing surfaces each have a midline having a recessed ridge running in the anterior-posterior direction and bisecting a right and left side of the device.
Claim 11
Dependent Claim
25 words
The device of claim 8 wherein the posterior portion of each bearing surface is adapted to bear against an anterior one-third of the disc space.
Claim 12
Dependent Claim
9 words
The device of claim 8 being an integral unit.
Claim 13
Dependent Claim
15 words
The device of claim 8 wherein the posterior wall has a concave horizontal cross section.
Claim 14
Dependent Claim
16 words
The device of claim 8 adapted for non-linear insertion from a posterior side of the spine.
Claim 15
Dependent Claim
39 words
The device of claim 8 wherein the anterior wall has a maximum height, the posterior wall has a maximum height, and wherein the maximum height of the anterior wall is greater than the maximum height of the posterior wall.
Claim 16
Dependent Claim
29 words
The device of claim 8 wherein the first end wall is a leading end wall adapted for insertion into the disc space, and the leading end wall is tapered.
Claim 17
Dependent Claim
29 words
The device of claim 8 wherein the upper bearing surface comprises at least one upper opening comprising between 30 areal % and 60 areal % of the upper surface.
Claim 18
Dependent Claim
40 words
The device of claim 8 wherein the anterior wall has a middle portion, lateral end portions, each having a maximum height, and the maximum height of the middle portion is greater than the maximum height of the lateral end portions.
Claim 19
Dependent Claim
153 words
An intervertebral fusion device comprising: a) an anterior wall having a leading end and a trailing end b) a posterior wall having a leading end and a trailing end, c) a leading end wall connecting the leading ends of the anterior and posterior walls and having a leading insertion hole, d) a trailing end wall connecting the anterior and posterior walls and having a trailing insertion hole, e) an upper bearing surface between the anterior and posterior walls, and having an anterior portion and a posterior portion, and f) a lower bearing surface between the anterior and posterior walls, wherein the anterior and posterior walls define a centerline therebetween, and wherein the leading and trailing insertion holes are disposed asymmetrically about the centerline wherein the upper and lower bearing surfaces each have a midline having a recessed ridge running in the anterior-posterior direction and bisecting a right and left side of the device.
Claim 20
Dependent Claim
153 words
An intervertebral fusion device comprising: a) an anterior wall having a leading end and a trailing end b) a posterior wall having a leading end and a trailing end, c) a leading end wall connecting the leading ends of the anterior and posterior walls and having a leading insertion hole, d) a trailing end wall connecting the anterior and posterior walls and having a trailing insertion hole, e) an upper bearing surface between the anterior and posterior walls, and having an anterior portion and a posterior portion, and f) a lower bearing surface between the anterior and posterior walls, wherein the anterior and posterior walls define a centerline therebetween, and wherein the leading and trailing insertion holes are disposed asymmetrically about the centerline wherein the upper and lower bearing surfaces each have a midline having a recessed ridge running in the anterior-posterior direction and bisecting a right and left side of the device.
Claim 21
Dependent Claim
9 words
The device of claim 17 being an integral unit.
Claim 22
Dependent Claim
15 words
The device of claim 17 wherein the posterior wall has a concave horizontal cross section.
Claim 23
Dependent Claim
16 words
The device of claim 17 adapted for non-linear insertion from a posterior side of a spine.
Claim 24
Dependent Claim
39 words
The device of claim 17 wherein the anterior wall has a maximum height, the posterior wall has a maximum height, and wherein the maximum height of the anterior wall is greater than the maximum height of the posterior wall.
Claim 25
Dependent Claim
12 words
The device of claim 17 wherein the leading end wall is tapered.
Claim 26
Dependent Claim
40 words
The device of claim 17 wherein the anterior wall has a middle portion, lateral end portions, each having a maximum height, and the maximum height of the middle portion is greater than the maximum height of the lateral end portions.
Claim 27
Dependent Claim
168 words
An intervertebral fusion device comprising: a) an anterior wall having a horizontal cross section having a convex shape and a recessed portion, b) a posterior wall, c) first and second end walls between the anterior and posterior walls, d) an upper bearing surface between the anterior and posterior walls having at least one upper opening therethrough adapted to promote bony fusion, wherein the at least one upper opening comprises between 30 areal % and 60 areal % of the upper surface, and e) a lower bearing surface between the anterior and posterior walls having at least one lower opening therethrough adapted to promote bony fusion, wherein the anterior wall has a convex shape and the posterior wall has a concave shape to define a banana shape adapted for non-linear insertion from a posterior side of a spine, and wherein the upper and lower bearing surfaces each have a midline having a recessed ridge running in the anterior-posterior direction and bisecting a right and left side of the device.
Claim 28
Dependent Claim
168 words
An intervertebral fusion device comprising: a) an anterior wall having a horizontal cross section having a convex shape and a recessed portion, b) a posterior wall, c) first and second end walls between the anterior and posterior walls, d) an upper bearing surface between the anterior and posterior walls having at least one upper opening therethrough adapted to promote bony fusion, wherein the at least one upper opening comprises between 30 areal % and 60 areal % of the upper surface, and e) a lower bearing surface between the anterior and posterior walls having at least one lower opening therethrough adapted to promote bony fusion, wherein the anterior wall has a convex shape and the posterior wall has a concave shape to define a banana shape adapted for non-linear insertion from a posterior side of a spine, and wherein the upper and lower bearing surfaces each have a midline having a recessed ridge running in the anterior-posterior direction and bisecting a right and left side of the device.
Claim 29
Dependent Claim
25 words
The device of claim 24 wherein a posterior portion of each bearing surface is adapted to bear against an anterior one-third of a disc space.
Claim 30
Dependent Claim
9 words
The device of claim 24 being an integral unit.
Claim 31
Dependent Claim
15 words
The device of claim 24 wherein the posterior wall has a concave horizontal cross section.
Claim 32
Dependent Claim
16 words
The device of claim 24 adapted for non-linear insertion from a posterior side of a spine.
Claim 33
Dependent Claim
39 words
The device of claim 24 wherein the anterior wall has a maximum height, the posterior wall has a maximum height, and wherein the maximum height of the anterior wall is greater than the maximum height of the posterior wall.
Claim 34
Dependent Claim
29 words
The device of claim 24 wherein the first end wall is a leading end wall adapted for insertion into a disc space, and the leading end wall is tapered.
Claim 35
Dependent Claim
40 words
The device of claim 24 wherein the anterior wall has a middle portion, lateral end portions, each having a maximum height, and the maximum height of the middle portion is greater than the maximum height of the lateral end portions.
Claim 36
Dependent Claim
187 words
An intervertebral fusion device comprising: a) an anterior wall having a convex shape, and a maximum height, b) a posterior wall having a concave shape, c) first and second end walls connecting the anterior and posterior walls d) an upper bearing surface between the anterior and posterior walls and having a middle portion having a recess, lateral end portions, and at least one upper opening therethrough adapted to promote bony fusion, wherein the at least one upper opening comprises between 30 areal % and 60 areal % of the upper surface, and e) a lower bearing surface having an anterior portion below the anterior wall, a posterior portion below the posterior wall, and at least one lower opening therethrough adapted to promote bony fusion, wherein the anterior wall has a convex shape and the posterior wall has a concave shape to define a banana shape adapted for non-linear insertion from a posterior side of a spine, and wherein the upper and lower bearing surfaces each have a midline having a recessed ridge running in the anterior-posterior direction and bisecting a right and left side of the device.
Claim 37
Dependent Claim
187 words
An intervertebral fusion device comprising: a) an anterior wall having a convex shape, and a maximum height, b) a posterior wall having a concave shape, c) first and second end walls connecting the anterior and posterior walls d) an upper bearing surface between the anterior and posterior walls and having a middle portion having a recess, lateral end portions, and at least one upper opening therethrough adapted to promote bony fusion, wherein the at least one upper opening comprises between 30 areal % and 60 areal % of the upper surface, and e) a lower bearing surface having an anterior portion below the anterior wall, a posterior portion below the posterior wall, and at least one lower opening therethrough adapted to promote bony fusion, wherein the anterior wall has a convex shape and the posterior wall has a concave shape to define a banana shape adapted for non-linear insertion from a posterior side of a spine, and wherein the upper and lower bearing surfaces each have a midline having a recessed ridge running in the anterior-posterior direction and bisecting a right and left side of the device.
Claim 38
Dependent Claim
25 words
The device of claim 32 wherein a posterior portion of each bearing surface is adapted to bear against an anterior one-third of a disc space.
Claim 39
Dependent Claim
9 words
The device of claim 32 being an integral unit.
Claim 40
Dependent Claim
15 words
The device of claim 32 wherein the posterior wall has a concave horizontal cross section.
Claim 41
Dependent Claim
16 words
The device of claim 32 adapted for non-linear insertion from a posterior side of a spine.
Claim 42
Dependent Claim
39 words
The device of claim 32 wherein the anterior wall has a maximum height, the posterior wall has a maximum height, and wherein the maximum height of the anterior wall is greater than the maximum height of the posterior wall.
Claim 43
Dependent Claim
29 words
The device of claim 32 wherein the first end wall is a leading end wall adapted for insertion into a disc space, and the leading end wall is tapered.
Claim 44
Dependent Claim
25 words
The device of claim 32 wherein the at least one upper opening comprises between 30 areal % and 60 areal % of the upper surface.
Claim 45
Dependent Claim
40 words
The device of claim 32 wherein the anterior wall has a middle portion, lateral end portions, each having a maximum height, and the maximum height of the middle portion is greater than the maximum height of the lateral end portions.
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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) | 2012-03-09 | 2012-09-08 | 2013-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2016-03-09 | 2016-09-08 | 2017-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2020-03-09 | 2020-09-08 | 2021-03-10 | $7700.00 | Window Closed / Lapsed |