US6270528B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composited intervertebral bone spacers
Assignee: Warsaw Orthopedic Inc
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Filing: 1999-08-06
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Granted: 2001-08-07
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Expires: 2019-08-06
Abstract
Abstract Described are intervertebral spacer assemblies having reinforcing members or space-filling members. Also described are methods for fabricating intervertebral spacers, as well as methods for fusing adjacent vertebrae utilizing intervertebral spacers of the present invention.
Inventors
- 👤 William F. McKay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:57
CPC Classifications
A; A61; A61L; A61L27/00; A61L27/36; A61L27/3604; A61L27/3608; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/44; A61F2/4455; A61F2/446; A61F2/4465; A61F2/447; A61F2/46; A61F2/4644; A61L27/14; A61L27/3641; A61L27/3645; A61L27/3654; A61L27/3658; A61L27/50; A61L27/54; A61F2/30721; A61F2/30724; A61F2/3094; A61F2/30965; A61F2/442; A61F2/4603; A61F2/4611; A61F2/28; A61F2002/2817; A61F2002/2835; A61F2002/2839; A61F2002/30001; A61F2002/30003; A61F2002/30004; A61F2002/30108; A61F2002/30199; A61F2002/30224; A61F2002/30225; A61F2002/30228; A61F2002/30235; A61F2002/30261; A61F2002/30316; A61F2002/30535; A61F2002/30581; A61F2002/30583; A61F2002/30593; A61F2002/30594; A61F2002/30617; A61F2002/30733; A61F2/30767; A61F2/30771; A61F2002/30772; A61F2002/30784; A61F2002/30785; A61F2002/30789; A61F2002/30795; A61F2002/3082; A61F2002/30822; A61F2002/30823; A61F2002/30827; A61F2002/3085; A61F2002/4649; A61F2210/00; A61F2210/0085; A61F2230/00; A61F2230/0063; A61F2230/0069; A61F2230/0082; A61F2250/00; A61F2250/0014; A61F2250/0058; A61F2250/0096; A61F2250/0097; A61F2310/00; A61F2310/00005; A61F2310/00011; A61F2310/00179; A61F2310/00293; A61F2310/00353; A61L2430/00; A61L2430/38
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
70 words
A composite intervertebral spacer, comprising: a) an elongate body of bone having a longitudinal axis and a channel extending perpendicular to said longitudinal axis, said channel formed at least partially from a natural channel; b) at least two opposing arms connected to said body, said opposing arms defining a mouth to said channel; and c) a space-filing member disposed within said channel, said composite spacer having a substantially uniform circumference.
Claim 2
Dependent Claim
70 words
A composite intervertebral spacer, comprising: a) an elongate body of bone having a longitudinal axis and a channel extending perpendicular to said longitudinal axis, said channel formed at least partially from a natural channel; b) at least two opposing arms connected to said body, said opposing arms defining a mouth to said channel; and c) a space-filing member disposed within said channel, said composite spacer having a substantially uniform circumference.
Claim 3
Dependent Claim
15 words
The intervertebral spacer of claim 1 , wherein said space-filling member is a bone plug.
Claim 4
Dependent Claim
14 words
The intervertebral spacer of claim 1 , wherein said channel is shaped by reaming.
Claim 5
Dependent Claim
18 words
The intervertebral spacer of claim 1 , further comprising a tool engaging end defining an instrument attachment hole.
Claim 6
Dependent Claim
30 words
The intervertebral spacer of claim 1 , wherein said body of bone is obtained from an off-center transverse cut of the diaphysis of a long bone having an inter-medullary canal.
Claim 7
Dependent Claim
14 words
The intervertebral spacer of claim 2 , wherein said bone plug comprises cortical bone.
Claim 8
Dependent Claim
33 words
An intervertebral spacer, comprising: a) an elongated body, said body having a wall defining a C-shaped chamber; and b) a space-filling member disposed within said chamber, said spacer having a substantially uniform circumference.
Claim 9
Dependent Claim
33 words
An intervertebral spacer, comprising: a) an elongated body, said body having a wall defining a C-shaped chamber; and b) a space-filling member disposed within said chamber, said spacer having a substantially uniform circumference.
Claim 10
Dependent Claim
78 words
An intervertebral spacer, comprising: a) a body of bone having a longitudinal axis, a channel extending perpendicular to said longitudinal axis, said channel formed at least partially from an inter-medullary canal, a thru-hole extending through said spacer and transverse to said longitudinal axis; b) at least two opposing arms connected to said body, said opposing arms defining a mouth to said channel; and c) a space-filling member disposed within said channel, said spacer having a substantially uniform circumference.
Claim 11
Dependent Claim
78 words
An intervertebral spacer, comprising: a) a body of bone having a longitudinal axis, a channel extending perpendicular to said longitudinal axis, said channel formed at least partially from an inter-medullary canal, a thru-hole extending through said spacer and transverse to said longitudinal axis; b) at least two opposing arms connected to said body, said opposing arms defining a mouth to said channel; and c) a space-filling member disposed within said channel, said spacer having a substantially uniform circumference.
Claim 12
Independent Claim
85 words
A method of preparing an intervertebral spacer, comprising: providing an elongated body of bone having a longitudinal axis and a channel extending perpendicular to said longitudinal axis, said channel formed at least partially from a natural channel, at least two opposing arms connected to said body, said opposing arms defining a mouth to said channel; providing a space-filling member configured to be received in said channel; and inserting said space-filling member into said channel to form said spacer, said spacer having a substantially uniform circumference.
Claim 13
Independent Claim
85 words
A method of preparing an intervertebral spacer, comprising: providing an elongated body of bone having a longitudinal axis and a channel extending perpendicular to said longitudinal axis, said channel formed at least partially from a natural channel, at least two opposing arms connected to said body, said opposing arms defining a mouth to said channel; providing a space-filling member configured to be received in said channel; and inserting said space-filling member into said channel to form said spacer, said spacer having a substantially uniform circumference.
Claim 14
Dependent Claim
30 words
The method of claim 9 , further comprising forming a thru-hole through said body after inserting said space-filling member into said channel, said thru-hole extending transverse to said longitudinal axis.
Claim 15
Dependent Claim
23 words
The method of claim 9 , wherein said body of bone is a transverse plug of a long bone having a medullary canal.
Claim 16
Dependent Claim
17 words
The method of claim 10 , wherein said thru-hole extends through said body and said space-filling member.
Claim 17
Independent Claim
104 words
A method of fusing adjacent vertebrae, comprising: 1) providing an intervertebral spacer including: a) an elongated body of bone having a longitudinal axis and a channel extending perpendicular to said longitudinal axis, said channel formed at least partially from a natural channel; b) at least two opposing arms connected to said body, said opposing arms defining a mouth to said channel; c) a space-filling member disposed in said channel, said spacer having a substantially uniform circumference; 2) preparing adjacent vertebrae to receive the spacer in an intervertebral space between adjacent vertebrae; and 3) placing the spacer into the intervertebral space after said preparing step.
Claim 18
Independent Claim
104 words
A method of fusing adjacent vertebrae, comprising: 1) providing an intervertebral spacer including: a) an elongated body of bone having a longitudinal axis and a channel extending perpendicular to said longitudinal axis, said channel formed at least partially from a natural channel; b) at least two opposing arms connected to said body, said opposing arms defining a mouth to said channel; c) a space-filling member disposed in said channel, said spacer having a substantially uniform circumference; 2) preparing adjacent vertebrae to receive the spacer in an intervertebral space between adjacent vertebrae; and 3) placing the spacer into the intervertebral space after said preparing step.
Claim 19
Dependent Claim
33 words
The method of claim 13 , further comprising including at least one thru-hole through said body prior to inserting said space-filling member into said channel, said thru-hole extending transverse to said longitudinal axis.
Claim 20
Dependent Claim
13 words
The method of claim 13 , wherein said space-filling member comprises cortical bone.
Claim 21
Dependent Claim
29 words
The method of claim 15 , wherein said spacer includes at least one thru-hole through said body and said space-filling member, said thru-hole extending transverse to said longitudinal axis.
Claim 22
Dependent Claim
15 words
The method of claim 16 , wherein said thru-hole is filled with an osteogenic material.
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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) | 2004-08-06 | 2005-02-05 | 2005-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-08-06 | 2009-02-05 | 2009-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-08-06 | 2013-02-05 | 2013-08-07 | $7700.00 | Window Closed / Lapsed |