US6986788B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intervertebral allograft spacer
Assignee: Synthes USA LLC
•
Filing: 2001-04-09
•
Granted: 2006-01-17
•
Expires: 2021-04-09
Abstract
Abstract An allogenic intervertebral implant for fusing vertebrae is disclosed. The implant is a piece of allogenic bone conforming in size and shape with a portion of an end plate of a vertebra. The implant has a wedge-shaped profile to restore disc height and the natural curvature of the spine. The top and bottom surfaces of the implant have a plurality of teeth to resist expulsion and provide initial stability. The implant according to the present invention provides initial stability need for fusion without stress shielding.
Inventors
- 👤 David C. Paul
- 👤 Hansjuerg Emch
- 👤 Beat Schenk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:27
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/28; A61F2/30; A61F2/3094; A61F2/30942; A61F2/44; A61F2/4455; A61F2/4465; A61F2/447; B; B29; B29C; B29C43/00; B29C43/006; A61F2/30721; A61F2/30724; A61F2/30744; A61F2/30965; A61F2/442; A61F2/46; A61F2/4603; A61F2/4611; A61F2/4644; A61F2002/2817; A61F2002/2835; A61F2002/2839; A61F2002/30001; A61F2002/30003; A61F2002/30004; A61F2002/30011; A61F2002/30057; A61F2002/3006; A61F2002/30062; A61F2002/30075; A61F2002/30108; A61F2002/3011; A61F2002/30112; A61F2002/30125; A61F2002/30126; A61F2002/30133; A61F2002/30138; A61F2002/30153; A61F2002/30158; A61F2002/30199; A61F2002/302; A61F2002/30224; A61F2002/30228; A61F2002/30233; A61F2002/30235; A61F2002/30237; A61F2002/3028; A61F2002/30316; A61F2002/30317; A61F2002/30324; A61F2002/30327; A61F2002/30329; A61F2002/30331; A61F2002/30354; A61F2002/30362; A61F2002/30364; A61F2002/30367; A61F2002/30383; A61F2002/30387; A61F2002/30433; A61F2002/30448; A61F2002/30459; A61F2002/30462; A61F2002/30476; A61F2002/30477; A61F2002/30481; A61F2002/30492; A61F2002/30494; A61F2002/30507; A61F2002/30515; A61F2002/30535; A61F2002/30593; A61F2002/30599; A61F2002/30604; A61F2002/30616; A61F2002/30617; A61F2002/30667; A61F2002/3071; A61F2002/30733; A61F2/30767; A61F2/30771; A61F2002/30772; A61F2002/30774; A61F2002/30782; A61F2002/30784; A61F2002/30785; A61F2002/30787; A61F2002/3082; A61F2002/30827; A61F2002/30828; A61F2002/30841; A61F2002/30843; A61F2002/30878; A61F2002/30891; A61F2002/30892; A61F2002/30894; A61F2002/30904; A61F2/30907; A61F2002/30909; A61F2002/30957; A61F2002/30971; A61F2002/30975; A61F2002/4635; A61F2002/4649; A61F2210/00; A61F2210/0004; A61F2210/0061; A61F2220/00; A61F2220/0025; A61F2220/0033; A61F2220/0041; A61F2220/005; A61F2220/0066; A61F2220/0075; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0008; A61F2230/0015; A61F2230/0017; A61F2230/0019; A61F2230/0026; A61F2230/0063; A61F2230/0065; A61F2230/0069; A61F2250/00; A61F2250/0014; A61F2250/0023; A61F2250/0036; A61F2250/0039; A61F2250/0058; A61F2250/006; A61F2250/0063; A61F2250/0085; A61F2250/0089; A61F2250/0096; A61F2250/0097; A61F2310/00; A61F2310/00005; A61F2310/00011; A61F2310/00179; A61F2310/00293; A61F2310/00353; B29C33/00; B29C33/20; B29C33/26; B29L; B29L2031/00; B29L2031/30; B29L2031/3005; B29L2031/3041
Claims Analysis
Total Claims: 74
Claim 1
Independent Claim
97 words
An intervertebral implant comprising a plug of allogenic bone conforming in size and shape with a portion of the end plates of adjacent vertebrae, wherein the top and bottom surfaces of the implant include a plurality of teeth provided in at least a two dimensional array with the teeth being spaced apart from one another for interlocking with the adjacent vertebrae, and wherein the teeth have a pyramidal shape profile defined by four sides meeting together to form a tip; wherein the sides opposite each other form an acute angle of approximately 60 degrees at the tip.
Claim 2
Dependent Claim
97 words
An intervertebral implant comprising a plug of allogenic bone conforming in size and shape with a portion of the end plates of adjacent vertebrae, wherein the top and bottom surfaces of the implant include a plurality of teeth provided in at least a two dimensional array with the teeth being spaced apart from one another for interlocking with the adjacent vertebrae, and wherein the teeth have a pyramidal shape profile defined by four sides meeting together to form a tip; wherein the sides opposite each other form an acute angle of approximately 60 degrees at the tip.
Claim 3
Dependent Claim
23 words
The implant of claim 1 wherein the implant has an interior space for receiving osteoconductive material to promote the formation of new bone.
Claim 4
Dependent Claim
12 words
The implant of claim 2 wherein the osteoconductive material comprises bone chips.
Claim 5
Dependent Claim
20 words
The implant of claim 1 wherein the implant has a wedge-shaped profile to help restore disc height and spine curvature.
Claim 6
Dependent Claim
18 words
The implant of claim 1 wherein the implant is formed of more than one piece of allogenic bone.
Claim 7
Dependent Claim
14 words
The implant of claim 1 wherein the top and bottom surfaces are curved surfaces.
Claim 8
Dependent Claim
16 words
The implant of claim 1 wherein the teeth are integral with the top and bottom surfaces.
Claim 9
Dependent Claim
29 words
The implant of claim 1 wherein the teeth on the top and bottom surfaces are interrupted to form a channel to receive an insertion instrument for placing the implant.
Claim 10
Dependent Claim
48 words
A method for restoring disc height between adjacent vertebrae having facing endplates, the method comprising: removing at least a portion of a disc located between the adjacent vertebrae; distracting an inner space between the facing endplates; and inserting the implant of claim 1 into the distracted inner space.
Claim 11
Dependent Claim
24 words
The method of claim 9 further comprising measuring a distance between the adjacent vertebrae with a preoperative lateral radiograph to determine an implant height.
Claim 12
Dependent Claim
15 words
The method of claim 9 wherein a distractor is used to distract the inner space.
Claim 13
Dependent Claim
17 words
The method of claim 11 further comprising inserting a trial spacer implant to determine an implant height.
Claim 14
Dependent Claim
28 words
The method of claim 9 wherein the implant further includes an interior space arid the method further comprises placing osteoconductive material into the interior space of the implant.
Claim 15
Dependent Claim
96 words
An implant for restoring disc height between adjacent vertebrae having facing endplates comprising an annular plug of allogenic bone surrounding an interior space, the plug having top and bottom surfaces configured and adapted in use to face the endplates of adjacent vertebrae, wherein the top and bottom surfaces include a plurality of teeth provided in at least a two dimensional array, and wherein the teeth have a pyramidal shape defined by four sides meeting together to form a tip; wherein the sides opposite each other form an acute angle of approximately 60 degrees at the tip.
Claim 16
Dependent Claim
96 words
An implant for restoring disc height between adjacent vertebrae having facing endplates comprising an annular plug of allogenic bone surrounding an interior space, the plug having top and bottom surfaces configured and adapted in use to face the endplates of adjacent vertebrae, wherein the top and bottom surfaces include a plurality of teeth provided in at least a two dimensional array, and wherein the teeth have a pyramidal shape defined by four sides meeting together to form a tip; wherein the sides opposite each other form an acute angle of approximately 60 degrees at the tip.
Claim 17
Dependent Claim
20 words
The implant of claim 14 wherein the implant has a wedge-shaped profile to help restore disc height and spine curvature.
Claim 18
Dependent Claim
14 words
The implant of claim 15 wherein the top and bottom surfaces are curved surfaces.
Claim 19
Dependent Claim
16 words
The implant of claim 14 wherein the teeth are integral with the top and bottom surfaces.
Claim 20
Dependent Claim
18 words
The implant of claim 14 wherein the implant is formed of more than one piece of allogenic bone.
Claim 21
Dependent Claim
127 words
An intervertebral implant comprising at least one piece of allogenic bone provided with a hollow interior space, the implant having top and bottom surfaces configured and adapted in use to face the end plates of adjacent vertebrae, wherein the top and bottom surfaces include a plurality of teeth provided in a plurality of adjacent rows, and wherein at least a portion of the teeth have a pyramidal shape defined by four sides meeting together to form a tip; wherein the sides apposite each other form an acute angle at the tip; the implant further comprising a pair of parallel channels extending along the entire length of the implant, the channels being substantially smooth, devoid of teeth, and being adapted and configured to receive a single surgical instrument.
Claim 22
Dependent Claim
127 words
An intervertebral implant comprising at least one piece of allogenic bone provided with a hollow interior space, the implant having top and bottom surfaces configured and adapted in use to face the end plates of adjacent vertebrae, wherein the top and bottom surfaces include a plurality of teeth provided in a plurality of adjacent rows, and wherein at least a portion of the teeth have a pyramidal shape defined by four sides meeting together to form a tip; wherein the sides apposite each other form an acute angle at the tip; the implant further comprising a pair of parallel channels extending along the entire length of the implant, the channels being substantially smooth, devoid of teeth, and being adapted and configured to receive a single surgical instrument.
Claim 23
Dependent Claim
22 words
The implant of claim 19 , wherein the top and bottom surfaces each have an opening communicating with the hollow interior space.
Claim 24
Dependent Claim
17 words
The implant of claim 19 , wherein the interior space and openings form a substantially cylindrical chamber.
Claim 25
Dependent Claim
12 words
The implant of claim 19 , wherein the angle is approximately 60°.
Claim 26
Dependent Claim
18 words
The implant of claim 19 , wherein the implant is substantially symmetrical about a mid-plane of the implant.
Claim 27
Dependent Claim
27 words
The implant of claim 23 , wherein the implant has a wedge shaped profile such that the top surface is inclined with reaped to the bottom surface.
Claim 28
Dependent Claim
25 words
The implant of claim 24 , wherein the angle of inclination between the top surface and the midplane is between about 4.2° and about 15°.
Claim 29
Dependent Claim
17 words
The implant of claim 25 , wherein the top and bottom surfaces are substantially flat planar surfaces.
Claim 30
Dependent Claim
15 words
The implant of claim 25 , wherein the top and bottom surfaces are curved surfaces.
Claim 31
Dependent Claim
28 words
The implant of claim 19 , wherein the implant has first and second sides and a gradual decrease in height from the first side to the second side.
Claim 32
Dependent Claim
27 words
The implant of claim 19 , wherein the implant has at least one rounded edge between the top and bottom surfaces to facilitate insertion of the implant.
Claim 33
Dependent Claim
23 words
The implant of claim 19 , further comprising at least two lateral sides wherein the channels are formed in the two lateral sides.
Claim 34
Dependent Claim
18 words
The implant of claim 19 , wherein the implant is formed of more than one piece of bone.
Claim 35
Dependent Claim
31 words
The implant of claim 31 , wherein the pieces of bone are arranged side by side and the top and bottom surfaces are formed of more than one piece of bone.
Claim 36
Dependent Claim
20 words
The implant of claim 19 , wherein the teeth are arranged to cover substantially the entire top and bottom surfaces.
Claim 37
Dependent Claim
164 words
An intervertebral implant formed of at least one piece of allogenic bone provided with a hollow substantially cylindrical interior space, the implant comprising: a mid-plane about which the implant is substantially symmetrical; top and bottom surfaces configured and adapted in use to face the end plates of adjacent vertebrae, the top and bottom surface each having an opening communication with the substantially cylindrical space, and the top surface being inclined in a range between about 4.2° and about 15° with respect to the mid-plane; at least two substantially smooth parallel channels adapted and configured to receive a surgical instrument; and at least one rounded edge between the top and bottom surfaces to facilitate insertion of the implant; wherein the top and bottom surfaces comprise a plurality of teeth provided in a plurality of adjacent rows, and further wherein the teeth are defined by four sides, at least three of the sides forming an acute angle with respect to the respective top and bottom surfaces.
Claim 38
Dependent Claim
164 words
An intervertebral implant formed of at least one piece of allogenic bone provided with a hollow substantially cylindrical interior space, the implant comprising: a mid-plane about which the implant is substantially symmetrical; top and bottom surfaces configured and adapted in use to face the end plates of adjacent vertebrae, the top and bottom surface each having an opening communication with the substantially cylindrical space, and the top surface being inclined in a range between about 4.2° and about 15° with respect to the mid-plane; at least two substantially smooth parallel channels adapted and configured to receive a surgical instrument; and at least one rounded edge between the top and bottom surfaces to facilitate insertion of the implant; wherein the top and bottom surfaces comprise a plurality of teeth provided in a plurality of adjacent rows, and further wherein the teeth are defined by four sides, at least three of the sides forming an acute angle with respect to the respective top and bottom surfaces.
Claim 39
Dependent Claim
17 words
The implant of claim 34 , wherein the top and bottom surfaces are substantially flat planer surfaces.
Claim 40
Dependent Claim
25 words
The implant of claim 34 , wherein the top and bottom surfaces are substantially flat in a first direction and curved in a second direction.
Claim 41
Dependent Claim
38 words
The implant of claim 34 formed of more than one piece of allogenic bone arranged side by side and adapted and configured such that the top and bottom surfaces are formed of more than one piece of bone.
Claim 42
Dependent Claim
14 words
The implant of claim 34 , wherein the top and bottom surfaces are curved.
Claim 43
Dependent Claim
130 words
An intervertebral implant comprising a plug of allogenic bone conforming in size and shape with a portion of the end plates of adjacent vertebrae, wherein the top and bottom surfaces of the implant include a plurality of teeth provided in at least a two dimensional array with the teeth being spaced apart from one another for interlocking with the adjacent vertebrae, and wherein the teeth have a pyramidal shape profile defined by four sides forming an acute angle with respect to the respective top and bottom surfaces of the implant; wherein the implant has a wedge-shaped profile such that the top surface is inclined with respect to the bottom surface at an angle of inclination of between about 4° and about 15° to help restore disc height and spine curvature.
Claim 44
Dependent Claim
130 words
An intervertebral implant comprising a plug of allogenic bone conforming in size and shape with a portion of the end plates of adjacent vertebrae, wherein the top and bottom surfaces of the implant include a plurality of teeth provided in at least a two dimensional array with the teeth being spaced apart from one another for interlocking with the adjacent vertebrae, and wherein the teeth have a pyramidal shape profile defined by four sides forming an acute angle with respect to the respective top and bottom surfaces of the implant; wherein the implant has a wedge-shaped profile such that the top surface is inclined with respect to the bottom surface at an angle of inclination of between about 4° and about 15° to help restore disc height and spine curvature.
Claim 45
Dependent Claim
103 words
An intervertebral implant comprising a plug of allogenic bone conforming in size and shape with a portion of the end plates of adjacent vertebrae, wherein the top and bottom surfaces of the implant include a plurality of teeth provided in at least a two dimensional array with the teeth being spaced apart from one another for interlocking with the adjacent vertebrae, and wherein the teeth have a pyramidal shape profile defined by four sides forming an acute angle with respect to the respective top and bottom surfaces of the implant; wherein the implant is formed of more than one piece of allogenic bone.
Claim 46
Dependent Claim
103 words
An intervertebral implant comprising a plug of allogenic bone conforming in size and shape with a portion of the end plates of adjacent vertebrae, wherein the top and bottom surfaces of the implant include a plurality of teeth provided in at least a two dimensional array with the teeth being spaced apart from one another for interlocking with the adjacent vertebrae, and wherein the teeth have a pyramidal shape profile defined by four sides forming an acute angle with respect to the respective top and bottom surfaces of the implant; wherein the implant is formed of more than one piece of allogenic bone.
Claim 47
Dependent Claim
27 words
The implant of claim 41 , wherein the implant is formed of at least two pieces of bone and at least two pieces are connected by pins.
Claim 48
Dependent Claim
31 words
The implant of claim 42 , wherein the pieces of bone are arranged side by side and the top and bottom surfaces are formed of more than one piece of bone.
Claim 49
Dependent Claim
99 words
An intervertebral implant comprising a plug of allogenic bone conforming in size and shape with a portion of the end plates of adjacent vertebrae, wherein the top and bottom surfaces of the implant include a plurality of teeth provided in at least a two dimensional array with the teeth being spaced apart from one another for interlocking with the adjacent vertebrae, and wherein the teeth have a pyramidal shape profile defined by four sides forming an acute angle with respect to the respective top and bottom surfaces of the implant; wherein the top and bottom surfaces are curved surfaces.
Claim 50
Dependent Claim
99 words
An intervertebral implant comprising a plug of allogenic bone conforming in size and shape with a portion of the end plates of adjacent vertebrae, wherein the top and bottom surfaces of the implant include a plurality of teeth provided in at least a two dimensional array with the teeth being spaced apart from one another for interlocking with the adjacent vertebrae, and wherein the teeth have a pyramidal shape profile defined by four sides forming an acute angle with respect to the respective top and bottom surfaces of the implant; wherein the top and bottom surfaces are curved surfaces.
Claim 51
Independent Claim
152 words
A method for restoring disc height between adjacent vertebrae having facing endplates, the method comprising: measuring a distance between the adjacent vertebrae with a preoperative lateral radiograph to determine an implant height; removing at least a portion of a disc located between the adjacent vertebrae; distracting an inner space between the facing endplates; and inserting an intervertebral implant into the distracted inner space, the implant comprising a plug of allogenic bone conforming in size and shape with a portion of the end plates of adjacent vertebrae, wherein the top and bottom surfaces of the implant include a plurality of teeth provided in at least a two dimensional array with the teeth being spaced apart from one another for interlocking with the adjacent vertebrae, and wherein the teeth have a pyramidal shape profile defined by four sides fanning an acute angle with respect to the respective lop and bottom surfaces of the implant.
Claim 52
Independent Claim
152 words
A method for restoring disc height between adjacent vertebrae having facing endplates, the method comprising: measuring a distance between the adjacent vertebrae with a preoperative lateral radiograph to determine an implant height; removing at least a portion of a disc located between the adjacent vertebrae; distracting an inner space between the facing endplates; and inserting an intervertebral implant into the distracted inner space, the implant comprising a plug of allogenic bone conforming in size and shape with a portion of the end plates of adjacent vertebrae, wherein the top and bottom surfaces of the implant include a plurality of teeth provided in at least a two dimensional array with the teeth being spaced apart from one another for interlocking with the adjacent vertebrae, and wherein the teeth have a pyramidal shape profile defined by four sides fanning an acute angle with respect to the respective lop and bottom surfaces of the implant.
Claim 53
Dependent Claim
102 words
An implant for restoring disc height between adjacent vertebrae having facing endplates comprising an annular plug of allogenic bone surrounding an interior space, the plug having top and bottom surfaces configured and adapted in use to face the endplates of adjacent vertebrae, wherein the top and bottom surfaces include a plurality of teeth provided in at least a two dimensional array, and wherein the teeth have a pyramidal shape defined by four sides forming an acute angle with respect to the respective top and bottom surfaces of the implant; wherein the implant is formed of more than one piece of allogenic bone.
Claim 54
Dependent Claim
102 words
An implant for restoring disc height between adjacent vertebrae having facing endplates comprising an annular plug of allogenic bone surrounding an interior space, the plug having top and bottom surfaces configured and adapted in use to face the endplates of adjacent vertebrae, wherein the top and bottom surfaces include a plurality of teeth provided in at least a two dimensional array, and wherein the teeth have a pyramidal shape defined by four sides forming an acute angle with respect to the respective top and bottom surfaces of the implant; wherein the implant is formed of more than one piece of allogenic bone.
Claim 55
Dependent Claim
139 words
An intervertebral implant comprising at least one piece of allogenic bone provided with a hollow interior space, the implant having top and bottom surfaces configured and adapted in use to face the end plates of adjacent vertebrae, wherein the top and bottom surfaces include a plurality of teeth provided in a plurality of adjacent rows, and wherein at least a portion of the teeth have a pyramidal shape defined by four sides forming an acute angle with respect to the respective top and bottom surfaces of the implant; wherein: the implant is substantially symmetrical about a mid-plane of the implant; and the implant has a wedge shaped profile such that the top surface is inclined with respect to the bottom surface, an angle of inclination between the top surface and the midplane is between about 4.2° and about 15°.
Claim 56
Dependent Claim
139 words
An intervertebral implant comprising at least one piece of allogenic bone provided with a hollow interior space, the implant having top and bottom surfaces configured and adapted in use to face the end plates of adjacent vertebrae, wherein the top and bottom surfaces include a plurality of teeth provided in a plurality of adjacent rows, and wherein at least a portion of the teeth have a pyramidal shape defined by four sides forming an acute angle with respect to the respective top and bottom surfaces of the implant; wherein: the implant is substantially symmetrical about a mid-plane of the implant; and the implant has a wedge shaped profile such that the top surface is inclined with respect to the bottom surface, an angle of inclination between the top surface and the midplane is between about 4.2° and about 15°.
Claim 57
Dependent Claim
17 words
The implant of claim 46 , wherein the top and bottom surfaces are substantially flat planar surfaces.
Claim 58
Dependent Claim
15 words
The implant of claim 46 , wherein th top and bottom surfaces are curved surfaces.
Claim 59
Dependent Claim
116 words
An intervertebral implant comprising at least one piece of allogenic bone provided with a hollow interior space, the implant having top and bottom surfaces configured and adapted in use to face the end plates of adjacent vertebrae, wherein the top and bottom surfaces include a plurality of teeth provided in a plurality of adjacent rows, and wherein at least a portion of the teeth have a pyramidal shape defined by four sides meeting together to form a tip; wherein the sides opposite each other form an acute angle of approximately 60° at the tip; wherein the implant has first and second sides and a gradual decrease in height from the first side to the second side.
Claim 60
Dependent Claim
116 words
An intervertebral implant comprising at least one piece of allogenic bone provided with a hollow interior space, the implant having top and bottom surfaces configured and adapted in use to face the end plates of adjacent vertebrae, wherein the top and bottom surfaces include a plurality of teeth provided in a plurality of adjacent rows, and wherein at least a portion of the teeth have a pyramidal shape defined by four sides meeting together to form a tip; wherein the sides opposite each other form an acute angle of approximately 60° at the tip; wherein the implant has first and second sides and a gradual decrease in height from the first side to the second side.
Claim 61
Dependent Claim
115 words
An intervertebral implant comprising at least one piece of allogenic boric provided with a hollow interior space, the implant having top and bottom surfaces configured and adapted in use to face the end plates of adjacent vertebrae, wherein the top and bottom surfaces include a plurality of teeth provided in a plurality of adjacent rows, and wherein at least a portion of the teeth have a pyramidal shape defined by four sides meeting together to form a tip; wherein the sides opposite each other form an acute angle of approximately 60° at the tip; wherein the implant has at least one rounded edge between the top and bottom surfaces to facilitate insertion of the implant.
Claim 62
Dependent Claim
115 words
An intervertebral implant comprising at least one piece of allogenic boric provided with a hollow interior space, the implant having top and bottom surfaces configured and adapted in use to face the end plates of adjacent vertebrae, wherein the top and bottom surfaces include a plurality of teeth provided in a plurality of adjacent rows, and wherein at least a portion of the teeth have a pyramidal shape defined by four sides meeting together to form a tip; wherein the sides opposite each other form an acute angle of approximately 60° at the tip; wherein the implant has at least one rounded edge between the top and bottom surfaces to facilitate insertion of the implant.
Claim 63
Dependent Claim
122 words
An intervertebral implant comprising: at least one piece of allogenic bone provided with a hollow interior space, the implant having top and bottom surfaces configured and adapted in use to face the end plates of adjacent vertebrae; and a pair of parallel channels adapted and configured to receive a single surgical instrument; wherein: the top and bottom surfaces include a plurality of teeth provided in a plurality of adjacent rows, and wherein at least a portion of the teeth have a pyramidal shape defined by four sides forming an acute angle with respect to the respective top and bottom surfaces of the implant; and at least one channel extends along the entire length of the implant and is substantially devoid of teeth.
Claim 64
Dependent Claim
122 words
An intervertebral implant comprising: at least one piece of allogenic bone provided with a hollow interior space, the implant having top and bottom surfaces configured and adapted in use to face the end plates of adjacent vertebrae; and a pair of parallel channels adapted and configured to receive a single surgical instrument; wherein: the top and bottom surfaces include a plurality of teeth provided in a plurality of adjacent rows, and wherein at least a portion of the teeth have a pyramidal shape defined by four sides forming an acute angle with respect to the respective top and bottom surfaces of the implant; and at least one channel extends along the entire length of the implant and is substantially devoid of teeth.
Claim 65
Dependent Claim
23 words
The implant of claim 51 , further comprising at least two lateral sides wherein the channels are formed in the two lateral sides.
Claim 66
Dependent Claim
100 words
An intervertebral implant comprising at least one piece of allogenic bone provided with a hollow interior spare, the implant having top and bottom surfaces configured and adapted in use to face the end plates of adjacent vertebrae, wherein the top and bottom surfaces include a plurality of teeth provided in a plurality of adjacent rows, and wherein at least a portion of the teeth have a pyramidal shape defined by four sides forming an acute angle with respect to the respective top and bottom surfaces of the implant; wherein the implant is formed of more than one piece of bone.
Claim 67
Dependent Claim
100 words
An intervertebral implant comprising at least one piece of allogenic bone provided with a hollow interior spare, the implant having top and bottom surfaces configured and adapted in use to face the end plates of adjacent vertebrae, wherein the top and bottom surfaces include a plurality of teeth provided in a plurality of adjacent rows, and wherein at least a portion of the teeth have a pyramidal shape defined by four sides forming an acute angle with respect to the respective top and bottom surfaces of the implant; wherein the implant is formed of more than one piece of bone.
Claim 68
Dependent Claim
27 words
The implant of claim 53 , wherein the implant is formed of at least two pieces of bone and at least two pieces are connected by pins.
Claim 69
Dependent Claim
30 words
The implant of claim 54 , the pieces of bone are arranged side by side and the top and bottom surfaces are formed of more than one piece of bone.
Claim 70
Dependent Claim
132 words
An implant for restoring disc height between adjacent vertebrae having facing endplates comprising an annular plug of allogenic bone surrounding an interior space, the plug having top and bottom surfaces configured and adapted in use to face the endplate of adjacent vertebrae, wherein the top and bottom surfaces include a plurality of teeth provided in at least a two dimensional array, and wherein the teeth have a pyramidal shape defined by four sides forming an acute angle with respect to the respective top and bottom surfaces of the implant; wherein: the angle formed from the tip of the teeth to a base where the sides meet with the respective top and bottom surfaces is approximately 60 degrees; and the implant bas a wedge-shaped profile to help restore disc height and spine curvature.
Claim 71
Dependent Claim
132 words
An implant for restoring disc height between adjacent vertebrae having facing endplates comprising an annular plug of allogenic bone surrounding an interior space, the plug having top and bottom surfaces configured and adapted in use to face the endplate of adjacent vertebrae, wherein the top and bottom surfaces include a plurality of teeth provided in at least a two dimensional array, and wherein the teeth have a pyramidal shape defined by four sides forming an acute angle with respect to the respective top and bottom surfaces of the implant; wherein: the angle formed from the tip of the teeth to a base where the sides meet with the respective top and bottom surfaces is approximately 60 degrees; and the implant bas a wedge-shaped profile to help restore disc height and spine curvature.
Claim 72
Dependent Claim
14 words
The implant of claim 56 wherein the top and bottom surfaces are curved surfaces.
Claim 73
Dependent Claim
116 words
An intervertebral implant comprising at least one piece of allogenic bone provided with a hollow interior space, the implant having top and bottom surfaces configured and adapted in use to face the end plates of adjacent vertebrae, wherein the top and bottom surfaces include a plurality of teeth provided in a plurality of adjacent rows, and wherein at least a portion of the teeth have a pyramidal shape defined by four sides forming an acute angle with respect to the respective top and bottom surfaces of the implant; wherein the angle formed from the tip of the pyramidal teeth to a base where the sides meet with the respective top arid bottom surfaces is approximately 60°.
Claim 74
Dependent Claim
116 words
An intervertebral implant comprising at least one piece of allogenic bone provided with a hollow interior space, the implant having top and bottom surfaces configured and adapted in use to face the end plates of adjacent vertebrae, wherein the top and bottom surfaces include a plurality of teeth provided in a plurality of adjacent rows, and wherein at least a portion of the teeth have a pyramidal shape defined by four sides forming an acute angle with respect to the respective top and bottom surfaces of the implant; wherein the angle formed from the tip of the pyramidal teeth to a base where the sides meet with the respective top arid bottom surfaces is approximately 60°.
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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) | 2009-01-16 | 2009-07-18 | 2010-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2013-01-16 | 2013-07-18 | 2014-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2017-01-16 | 2017-07-18 | 2018-01-17 | $7700.00 | Window Closed / Lapsed |