Patent US6569201B2 successfully refreshed from Google Patents.
US6569201B2
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Hybrid composite interbody fusion device
Assignee: DePuy Spine LLC
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Filing: 2001-09-28
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Granted: 2003-05-27
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Expires: 2021-09-28
Abstract
Abstract A fusion cage having a structural bioresorbable layer thereon.
Inventors
- 👤 Missoum Moumene
- 👤 Hassan Serhan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:45
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/44; A61F2/4455; A61F2/447; A61F2/3094; A61F2/30965; A61F2/446; A61F2/4465; A61F2/28; A61F2002/2835; A61F2002/30001; A61F2002/30003; A61F2002/3006; A61F2002/30062; A61F2002/30108; A61F2002/30199; A61F2002/302; A61F2002/30316; A61F2002/30329; A61F2002/30331; A61F2002/30354; A61F2002/30535; A61F2002/30593; A61F2/30767; A61F2/30771; A61F2002/30772; A61F2002/30777; A61F2002/30818; A61F2002/30841; A61F2210/00; A61F2210/0004; A61F2220/00; A61F2220/0025; A61F2220/0033; A61F2230/00; A61F2230/0063; A61F2230/0065; A61F2310/00; A61F2310/00005; A61F2310/00011; A61F2310/00017; A61F2310/00023; A61F2310/00029; A61F2310/00179; A61F2310/00329; Y; Y10; Y10S; Y10S606/00; Y10S606/907; Y10S606/908; Y10S606/91
Claims Analysis
Total Claims: 45
Claim 1
Independent Claim
60 words
An interbody fusion device comprising: a) a non-resorbable support having an outer surface, the support having an osteoconductive pore passing therethrough and opening onto at least two openings on the outer surface, and b) a first bioresorbable layer disposed upon the outer surface of the support, wherein the first bioresorbable layer has a thickness TH of at least 100 μm.
Claim 2
Dependent Claim
60 words
An interbody fusion device comprising: a) a non-resorbable support having an outer surface, the support having an osteoconductive pore passing therethrough and opening onto at least two openings on the outer surface, and b) a first bioresorbable layer disposed upon the outer surface of the support, wherein the first bioresorbable layer has a thickness TH of at least 100 μm.
Claim 3
Dependent Claim
31 words
The device of claim 1 wherein the outer surface comprises upper and lower contact surfaces, and wherein the first bioresorbable layer is disposed upon at least one of the contact surfaces.
Claim 4
Dependent Claim
17 words
The device of claim 2 wherein the first bioresorbable layer is disposed upon the upper contact surface.
Claim 5
Dependent Claim
17 words
The device of claim 2 wherein the first bioresorbable layer is disposed upon the lower contact surface.
Claim 6
Dependent Claim
33 words
The device of claim 2 comprising first and second openings, wherein the first opening is formed in the upper contact surface and wherein the second opening is formed in the lower contact surface.
Claim 7
Dependent Claim
44 words
The device of claim 5 wherein the first opening has a perimeter, and wherein the first bioresorbable layer is disposed upon a portion of the upper contact surface and is located substantially adjacent the perimeter of the first opening in the upper contact surface.
Claim 8
Dependent Claim
41 words
The device of claim 5 wherein the upper contact surface has a perimeter, and wherein the first bioresorbable layer is disposed upon a portion of the upper contact surface and is located substantially adjacent the perimeter of the upper contact surface.
Claim 9
Dependent Claim
18 words
The device of claim 5 wherein the thickness of the first bioresorbable layer is at least 200 μm.
Claim 10
Dependent Claim
18 words
The device of claim 5 wherein the thickness of the first bioresorbable layer is at least 500 μm.
Claim 11
Dependent Claim
20 words
The device of claim 5 wherein the thickness of the first bioresorbable layer is betweem 1 mm and 8 mm.
Claim 12
Dependent Claim
20 words
The device of claim 5 wherein the thickness of the first bioresorbable layer is between 1 mm and 8 mm.
Claim 13
Dependent Claim
20 words
The device of claim 5 wherein the thickness of the first bioresorbable layer is between 2 mm and 4 mm.
Claim 14
Dependent Claim
36 words
The device of claim 5 further comprising: c) a second bioresorbable layer, wherein the first bioresorbable layer is disposed upon the upper contact surface, and the second bioresorbable layer is disposed upon the lower contact surface.
Claim 15
Dependent Claim
48 words
The device of claim 1 wherein the outer surface comprises upper and lower contact surfaces, and at least a first side surface therebetween, and the first bioresorbable layer is disposed upon the first side surface and extends beyond at least one of the upper and lower contact surfaces.
Claim 16
Dependent Claim
54 words
The device of claim 14 further comprising: c) a second bioresorbable layer, wherein the outer surface further comprises a second side surface between the upper and lower contact surfaces, and the second bioresorbable layer is disposed upon the second side surface and extends beyond at least one of the upper and lower contact surfaces.
Claim 17
Dependent Claim
14 words
The device of claim 15 wherein each bioresorbable layer extends beyond each contact surface.
Claim 18
Dependent Claim
48 words
The device of claim 1 wherein the osteoconductive pore forms a void within the support, the void defining a void volume and an inner surface, wherein the outer surface of the support defines a support volume, wherein the void volume is at least 10-50% of the support volume.
Claim 19
Dependent Claim
11 words
The device of claim 17 wherein the support is a cage.
Claim 20
Dependent Claim
29 words
The device of claim 1 wherein the first bioresorbable layer forms at least one tooth extending away from the outer surface upon which the first bioresorbable layer is disposed.
Claim 21
Dependent Claim
30 words
The device of claim 19 wherein the outer surface comprises upper and lower contact surfaces, and wherein first bioresorbable layer is disposed upon at least one of the contact surfaces.
Claim 22
Dependent Claim
43 words
The device of claim 20 wherein the contact surface upon which the first bioresorbable layer is dispose has a perimeter, and wherein the at least one tooth has a leading edge facing the perimeter of the contact surface upon which it is disposed.
Claim 23
Dependent Claim
20 words
The device of claim 1 wherein the bioresorbable layer has a resorption time of between 3 months and 48 months.
Claim 24
Dependent Claim
12 words
The device of claim 1 wherein the bioresorbable layer comprises a polymer.
Claim 25
Dependent Claim
20 words
The device of claim 23 wherein the polymer is selected from the group consisting of PLA, PGA, and copolymers thereof.
Claim 26
Dependent Claim
68 words
An interbody fusion device comprising: a) a non-resorbable support having an outer surface, the support having an osteoconductive pore passing therethrough and opening onto at least two openings on the outer surface, and a first bioresorbable layer comprising a polymer, the layer contacting the support and extending beyond the outer surface of the support, wherein the first bioresorbable layer has a thickness TH of at least 100 μm.
Claim 27
Dependent Claim
68 words
An interbody fusion device comprising: a) a non-resorbable support having an outer surface, the support having an osteoconductive pore passing therethrough and opening onto at least two openings on the outer surface, and a first bioresorbable layer comprising a polymer, the layer contacting the support and extending beyond the outer surface of the support, wherein the first bioresorbable layer has a thickness TH of at least 100 μm.
Claim 28
Dependent Claim
28 words
The device of claim 25 wherein the osteoconductive pore defines an inner surface of the support, and the first bioresorbable layer contacts the inner surface of the support.
Claim 29
Dependent Claim
33 words
The device of claim 26 wherein the outer surface comprises upper and lower contact surfaces, and wherein the first bioresorbable layer extends beyond at least one of the upper and lower contact surfaces.
Claim 30
Dependent Claim
20 words
The device of claim 27 wherein the first bioresorbable layer extends beyond each of the upper and lower contact surfaces.
Claim 31
Dependent Claim
28 words
The device of claim 28 wherein the first opening is formed in the upper contact surface and wherein the second opening is formed in the lower contact surface.
Claim 32
Dependent Claim
29 words
The device of claim 29 wherein the first bioresorbable layer forms at least one tooth extending away from the outer surface upon which the first bioresorbable layer is disposed.
Claim 33
Dependent Claim
105 words
An interbody fusion device comprising: a) a non-resorbable support having an outer surface, the support having an osteoconductive pore passing therethrough and opening onto at least two openings on the outer surface, the pore defining an inner surface of the support, and b) a first bioresorbable layer contacting the inner surface of the support and extending beyond the outer surface of the support, wherein the contact of the bioresorbable layer upon the inner surface does not occlude at least two of the at least two openings at the outer surface, and wherein the first bioresorbable layer has a thickness TH of at least 100 μm.
Claim 34
Dependent Claim
105 words
An interbody fusion device comprising: a) a non-resorbable support having an outer surface, the support having an osteoconductive pore passing therethrough and opening onto at least two openings on the outer surface, the pore defining an inner surface of the support, and b) a first bioresorbable layer contacting the inner surface of the support and extending beyond the outer surface of the support, wherein the contact of the bioresorbable layer upon the inner surface does not occlude at least two of the at least two openings at the outer surface, and wherein the first bioresorbable layer has a thickness TH of at least 100 μm.
Claim 35
Dependent Claim
32 words
The device of claim 31 wherein the outer surface comprises upper and lower contact surfaces, wherein the first bioresorbable layer extends beyond at least one of the upper and lower contact surfaces.
Claim 36
Dependent Claim
20 words
The device of claim 32 wherein the first bioresorbable layer extends beyond each of the upper and lower contact surfaces.
Claim 37
Dependent Claim
52 words
The device of claim 33 wherein the first opening is formed in the upper contact surface and wherein the second opening is formed in the lower contact surface, and wherein the contact of the bioresorbable layer upon the inner surface does not occlude the first and second openings at the outer surface.
Claim 38
Dependent Claim
21 words
The device of claim 34 wherein the first bioresorbable layer forms at least one tooth extending away from the contact surfaces.
Claim 39
Dependent Claim
78 words
An interbody fusion device comprising: a) a non-resorbable support having an outer surface and an upper surface, the support having an osteoconductive pore passing therethrough and opening onto at least two openings on the outer surface, and b) at least one wall disposed upon the outer surface of the support and extending above the upper surface to form a reservoir upon the upper surface, wherein the first bioresorbable layer has a thickness TH of at least 100 μm.
Claim 40
Dependent Claim
78 words
An interbody fusion device comprising: a) a non-resorbable support having an outer surface and an upper surface, the support having an osteoconductive pore passing therethrough and opening onto at least two openings on the outer surface, and b) at least one wall disposed upon the outer surface of the support and extending above the upper surface to form a reservoir upon the upper surface, wherein the first bioresorbable layer has a thickness TH of at least 100 μm.
Claim 41
Dependent Claim
39 words
The device of claim 33 wherein the at least one opening comprises an upper opening which opens onto the upper surface and has a perimeter, and wherein the wall surrounds at least one-half of the perimeter of the opening.
Claim 42
Dependent Claim
16 words
The device of claim 37 wherein the wall substantially surrounds the perimeter of the upper opening.
Claim 43
Dependent Claim
14 words
The device of claim 37 wherein the wall is disposed upon the upper surface.
Claim 44
Dependent Claim
35 words
The device of claim 37 wherein the support further comprises: c) a lower surface, and d) a side surface between the upper and lower surfaces, and wherein the wall is disposed upon the side surface.
Claim 45
Dependent Claim
10 words
The device of claim 37 wherein the wall is bioresorbable.
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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) | 2006-05-26 | 2006-11-25 | 2007-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-05-26 | 2010-11-25 | 2011-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-05-26 | 2014-11-25 | 2015-05-27 | $7700.00 | Window Closed / Lapsed |