US6409765B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Open intervertebral spacer
Assignee: Warsaw Orthopedic Inc
•
Filing: 1999-12-03
•
Granted: 2002-06-25
•
Expires: 2019-12-03
Abstract
Abstract Open chambered spacers, implanting tools and methods are provided. The spacers 500' include a body 505' having a wall 506' which defines a chamber 530' and an opening 531' in communication with the chamber 530'. In one embodiment the wall 506' includes a pair of arms 520', 521' facing one another and forming a mouth 525' to the chamber 530'. Preferably, one of the arms 520' is truncated relative to the other, forming a channel 526. In one aspect the body 505' is a bone dowel comprising an off-center plug from the diaphysis of a long bone. The tools 800 include spacer engaging means for engaging a spacer and occlusion means for blocking an opening defined in the spacer. In some embodiments, the occlusion means 820 includes a plate 821 extendable from the housing 805. In one specific embodiment the plate 821 defines a groove 822 which is disposed around a fastener 830 attached to the housing 805 so that the plate 821 is slideable relative to the housing 805.
Inventors
- 👤 John R. Bianchi
- 👤 Kevin C. Carter
- 👤 Bradley T. Estes
- 👤 Larry Boyd
- 👤 John A. Pafford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:40
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/46; A61F2/4644; A61B; A61B17/00; A61B17/16; A61B17/1662; A61B17/1671; A61F2/28; A61F2/44; A61F2/4455; A61F2/446; A61F2/4601; A61F2/4603; A61F2/4611; A61B17/1604; A61B17/56; A61B17/58; A61B17/88; A61B17/8875; A61F2/30721; A61F2/30724; A61F2/3094; A61F2/442; A61F2/468; A61F2002/2817; A61F2002/2835; A61F2002/2839; A61F2002/30001; A61F2002/30003; A61F2002/30004; A61F2002/30057; A61F2002/3006; A61F2002/30062; A61F2002/30108; A61F2002/3011; A61F2002/30112; A61F2002/30131; A61F2002/30138; A61F2002/30143; A61F2002/30199; A61F2002/30224; A61F2002/30316; A61F2002/30535; A61F2002/30593; A61F2002/30594; A61F2002/30604; A61F2002/30616; A61F2002/30617; A61F2/30767; A61F2/30771; A61F2002/30772; A61F2002/30795; A61F2002/30797; A61F2002/3082; A61F2002/3085; A61F2002/30871; A61F2002/448; A61F2002/4625; A61F2002/4627; A61F2002/4635; A61F2002/4649; A61F2210/00; A61F2210/0004; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0013; A61F2230/0017; A61F2230/0063; A61F2230/0069; A61F2250/00; A61F2250/0058; A61F2250/0096; A61F2250/0097; A61F2310/00; A61F2310/00005; A61F2310/00011; A61F2310/00179; Y; Y10; Y10S; Y10S623/00; Y10S623/902; Y10S623/908
Claims Analysis
Total Claims: 47
Claim 1
Independent Claim
49 words
A graft consisting essentially of cortical bone and comprising an elongated body having an outer surface and a longitudinal axis along a length of said body, said outer surface including a channel having a substantially convex surface and extending along a second axis substantially perpendicular to said longitudinal axis.
Claim 2
Dependent Claim
49 words
A graft consisting essentially of cortical bone and comprising an elongated body having an outer surface and a longitudinal axis along a length of said body, said outer surface including a channel having a substantially convex surface and extending along a second axis substantially perpendicular to said longitudinal axis.
Claim 3
Dependent Claim
14 words
The spacer of claim 1 wherein said outer surface defines threaded bone engaging portions.
Claim 4
Dependent Claim
10 words
A bone graft having a C-shaped wall defining a chamber.
Claim 5
Dependent Claim
10 words
A bone graft having a C-shaped wall defining a chamber.
Claim 6
Dependent Claim
32 words
The spacer of claim 3 wherein said graft is a bone dowel obtained from the diaphysis of a long bone having a medullary canal, said chamber including a portion of the canal.
Claim 7
Dependent Claim
13 words
The graft of claim 1 wherein the outer surface comprises vertebrae engaging surfaces.
Claim 8
Dependent Claim
15 words
The graft of claim 1 wherein the outer surface comprises upper and lower flattened portions.
Claim 9
Dependent Claim
13 words
The graft of claim 6 wherein the outer surface comprises vertebrae engaging surfaces.
Claim 10
Dependent Claim
15 words
The graft of claim 7 wherein the vertebrae engaging surfaces comprise ribs, grooves or threads.
Claim 11
Dependent Claim
14 words
The graft of claim 1 further comprising an osteogenic material packed within said cavity.
Claim 12
Dependent Claim
11 words
The graft of claim 1 wherein the cavity is substantially C-shaped.
Claim 13
Dependent Claim
40 words
The graft of claim 1 wherein the body comprises a first end positioned to lie substantially perpendicular to the longitudinal axis and including a tool engaging hole for receiving a driving tool for implanting the graft into an intervertebral space.
Claim 14
Dependent Claim
20 words
An intervertebral spacer comprising a C-shaped body formed of cortical bone, said body comprising a cavity having a convex surface.
Claim 15
Dependent Claim
20 words
An intervertebral spacer comprising a C-shaped body formed of cortical bone, said body comprising a cavity having a convex surface.
Claim 16
Dependent Claim
18 words
The spacer of claim 12 wherein the body comprises bone engaging surfaces including a groove or a rib.
Claim 17
Dependent Claim
18 words
The spacer of claim 12 wherein the cavity is derived from the medullary canal of a source bone.
Claim 18
Dependent Claim
14 words
The spacer of claim 12 wherein the body comprises upper and lower flattened portions.
Claim 19
Dependent Claim
37 words
An intervertebral spacer, comprising an elongated body defining a central longitudinal axis, said body consisting essentially of cortical bone and including a channel extending therethrough, said channel offset from and substantially perpendicular to the central longitudinal axis.
Claim 20
Dependent Claim
37 words
An intervertebral spacer, comprising an elongated body defining a central longitudinal axis, said body consisting essentially of cortical bone and including a channel extending therethrough, said channel offset from and substantially perpendicular to the central longitudinal axis.
Claim 21
Dependent Claim
18 words
The spacer of claim 16 wherein the channel is derived from the medullary canal of a source bone.
Claim 22
Dependent Claim
17 words
The spacer of claim 16 wherein the elongate body has an outer surface defining bone engaging surfaces.
Claim 23
Dependent Claim
18 words
The spacer of claim 16 wherein the bone engaging surfaces comprise a groove, a rib or a thread.
Claim 24
Dependent Claim
15 words
The spacer of claim 16 wherein the elongated body comprises upper and lower flatten portions.
Claim 25
Dependent Claim
13 words
The spacer of claim 20 wherein the elongate body comprises bone engaging surfaces.
Claim 26
Dependent Claim
12 words
The spacer of claim 16 wherein the channel defines a C-shaped cavity.
Claim 27
Dependent Claim
18 words
The spacer of claim 16 wherein the body comprises an insertion end and an opposite tool engaging end.
Claim 28
Dependent Claim
24 words
The spacer of claim 23 wherein the tool engaging end includes a tool engaging hole for receiving a driving tool for implanting the spacer.
Claim 29
Dependent Claim
58 words
A bone dowel, comprising an elongated body defining a longitudinal axis, said body consisting essentially of cortical bone and comprising a channel extending therethrough substantially perpendicular to the longitudinal axis, said channel approximating a portion of the internal configuration of an medullary canal of a source bone, wherein the elongated body includes upper and a lower flattened portions.
Claim 30
Dependent Claim
58 words
A bone dowel, comprising an elongated body defining a longitudinal axis, said body consisting essentially of cortical bone and comprising a channel extending therethrough substantially perpendicular to the longitudinal axis, said channel approximating a portion of the internal configuration of an medullary canal of a source bone, wherein the elongated body includes upper and a lower flattened portions.
Claim 31
Dependent Claim
13 words
The bone dowel of claim 25 wherein the channel defines a C-shaped cavity.
Claim 32
Dependent Claim
18 words
The bone dowel claim 25 wherein the body includes an insertion end and an opposite tool engaging end.
Claim 33
Dependent Claim
23 words
The bone dowel of claim 25 wherein at least one of the insertion end and the tool engaging end include a chamfered portion.
Claim 34
Dependent Claim
18 words
The bone dowel of claim 25 wherein the elongate body has an outer surface defining bone engaging surfaces.
Claim 35
Independent Claim
55 words
A system for spinal fusion of adjacent vertebrae, said system comprising a pair of spinal implants, each of said spinal implants comprising a C-shaped body formed of cortical bone, said body comprising a cavity having a convex surface, wherein said pair of implants are positioned in an intervertebal space whereby the cavities oppose each other.
Claim 36
Independent Claim
55 words
A system for spinal fusion of adjacent vertebrae, said system comprising a pair of spinal implants, each of said spinal implants comprising a C-shaped body formed of cortical bone, said body comprising a cavity having a convex surface, wherein said pair of implants are positioned in an intervertebal space whereby the cavities oppose each other.
Claim 37
Dependent Claim
12 words
The system of claim 30 wherein the cavities comprise an osteogenic material.
Claim 38
Dependent Claim
13 words
The system of claim 30 wherein the implants do not contact each other.
Claim 39
Dependent Claim
19 words
The system of claim 30 wherein the implants are positioned to lie at an angle oblique to each other.
Claim 40
Dependent Claim
21 words
The system of claim 30 wherein each of the implants comprise a tool engaging end positioned posteriorly in the intervertebral space.
Claim 41
Dependent Claim
49 words
A graft consisting essentially of cortical bone and comprising an elongated body having an outer surface and a longitudinal axis along a length of said body, said outer surface including a channel having a substantially concave surface and extending along a second axis substantially perpendicular to said longitudinal axis.
Claim 42
Dependent Claim
49 words
A graft consisting essentially of cortical bone and comprising an elongated body having an outer surface and a longitudinal axis along a length of said body, said outer surface including a channel having a substantially concave surface and extending along a second axis substantially perpendicular to said longitudinal axis.
Claim 43
Dependent Claim
15 words
The graft of claim 35 wherein the outer surface comprises upper and lower flattened portions.
Claim 44
Dependent Claim
13 words
The graft of claim 34 wherein the outer surface comprises vertebrae engaging surfaces.
Claim 45
Dependent Claim
19 words
The graft of claim 37 wherein the vertebrae engaging surfaces comprise at least one of ribs, grooves and threads.
Claim 46
Dependent Claim
13 words
The graft of claim 35 comprising an osteogenic material packed within said channel.
Claim 47
Dependent Claim
40 words
The graft of claim 35 wherein the body comprises a first end positioned to lie substantially perpendicular to the longitudinal axis and including a tool engaging hole for receiving a driving tool for implanting the graft into an intervertebral space.
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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) | 2005-06-24 | 2005-12-24 | 2006-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-06-24 | 2009-12-24 | 2010-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-06-24 | 2013-12-24 | 2014-06-25 | $7700.00 | Window Closed / Lapsed |