US6277149B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ramp-shaped intervertebral implant
Assignee: Warsaw Orthopedic Inc
•
Filing: 1999-06-08
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Granted: 2001-08-21
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Expires: 2019-06-08
Abstract
Abstract A ramp-shaped intervertebral implant is disclosed. The implant has a body having a first end, a second end, a top surface and a bottom surface. At least one of the top and bottom surfaces is tapered and converges towards the second end of the body. An opening extends through the body and has one end opening onto the top surface of the implant and the other end opening onto the bottom surface of the implant. The implant can be formed from the diaphysis or metaphysis of a long bone, wherein the intramedullary canal of the long bone defines the opening. Alternately, the implant can be made from any biocompatible material having the requisite strength requirement.
Inventors
- 👤 John W. Boyle
- 👤 Lawrence A. Shimp
- 👤 David R. Kaes
- 👤 John W. Morris
- 👤 Erik O. Martz
- 👤 Todd M. Boyce
- 👤 Mark Daugherty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:40
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/46; A61F2/4603; A61F2/4611; A61F2/44; A61F2/4455; A61F2/4465; A61F2/447; A61F2/28; A61F2/30767; A61F2/30771; A61F2/3094; A61F2/30965; A61F2/442; A61F2002/2817; A61F2002/2825; A61F2002/2835; A61F2002/30001; A61F2002/30108; A61F2002/3011; A61F2002/30112; A61F2002/30113; A61F2002/30115; A61F2002/30131; A61F2002/30138; A61F2002/30153; A61F2002/30158; A61F2002/30199; A61F2002/30224; A61F2002/3023; A61F2002/30235; A61F2002/30237; A61F2002/30261; A61F2002/30266; A61F2002/3028; A61F2002/30316; A61F2002/30317; A61F2002/30324; A61F2002/30772; A61F2002/30774; A61F2002/30784; A61F2002/30785; A61F2002/30789; A61F2002/3082; A61F2002/30836; A61F2002/30841; A61F2002/30843; A61F2002/30904; A61F2/30942; A61F2002/30952; A61F2002/4625; A61F2002/4627; A61F2/4644; A61F2002/4649; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0006; A61F2230/0013; A61F2230/0017; A61F2230/0019; A61F2230/0026; A61F2230/0063; A61F2230/0069; A61F2230/0082; A61F2250/00; A61F2250/0014; A61F2250/0036; A61F2310/00; A61F2310/00005; A61F2310/00011; A61F2310/00017; A61F2310/00023; A61F2310/00035; A61F2310/00131; A61F2310/00179; A61F2310/00293; A61F2310/00359
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
115 words
A ramp-shaped intervertebral implant comprising: a body isolated from along bone having a first end, a second end and top and bottom surfaces, at least one of the top and bottom surfaces being tapered and converging towards the second end of the body, at least one of the top and bottom surfaces having a plurality of protrusions thereon, the protrusions defining substantially V-shaped elongated, parallel grooves, and at least one opening extending through the body having one end opening onto the top surface and one end opening onto the bottom surface, wherein the first end of the implant includes a threaded hole and a non-threaded hole, the holes being dimensioned to engage an insertion tool.
Claim 2
Dependent Claim
115 words
A ramp-shaped intervertebral implant comprising: a body isolated from along bone having a first end, a second end and top and bottom surfaces, at least one of the top and bottom surfaces being tapered and converging towards the second end of the body, at least one of the top and bottom surfaces having a plurality of protrusions thereon, the protrusions defining substantially V-shaped elongated, parallel grooves, and at least one opening extending through the body having one end opening onto the top surface and one end opening onto the bottom surface, wherein the first end of the implant includes a threaded hole and a non-threaded hole, the holes being dimensioned to engage an insertion tool.
Claim 3
Dependent Claim
17 words
A ramp-shaped intervertebral implant according to claim 1 , wherein the protrusions include a series of ridges.
Claim 4
Dependent Claim
42 words
A ramp-shaped intervertebral implant according to claim 2 , wherein the implant includes a pair of substantially parallel side walls, each ridge of the series of ridges having a longitudinal axis that extends in a direction substantially perpendicular to the side walls.
Claim 5
Dependent Claim
34 words
A ramp-shaped intervertebral implant according to claim 1 , wherein the implant is constructed from the diaphysis or metaphysis of a long bone and the intramedullary canal of the long bone defines the bore.
Claim 6
Dependent Claim
22 words
A ramp-shaped intervertebral implant according to claim 1 , wherein the implant is formed from bone which is at least partially demineralized.
Claim 7
Dependent Claim
17 words
A ramp-shaped intervertebral implant according to claim 1 , wherein the implant has a substantially rectangular configuration.
Claim 8
Dependent Claim
20 words
A ramp-shaped intervertebral implant according to claim 1 , wherein protrusions are formed on both the top and bottom surfaces.
Claim 9
Dependent Claim
21 words
A ramp-shaped intervertebral implant according to claim 1 , wherein at least one of the top and bottom surfaces is convex.
Claim 10
Independent Claim
175 words
A method for forming a ramp-shaped implant comprising the following steps: a) making a transverse cut across a long bone having an intramedullary canal to form a cortical ring; b) machining at least one of top and bottom surfaces of the cortical ring such that the top and bottom surfaces of the cortical ring converge towards one another in a direction towards a second end of the cortical ring, at least one of the top and bottom surfaces having a plurality of substantially V-shaped elongated, parallel grooves, the intramedullary canal of the long bone defining an opening having one end opening onto the top surface of the cortical ring and having a second end opening onto the bottom surface of the cortical ring; c) machining at least one of the top and bottom surfaces of the cortical ring to form a plurality of protrusions thereon; and; d) forming a threaded hole and a non-threaded hole in a first end of the implant, the threaded hole and non-threaded hole being dimensional to engage an insertion tool.
Claim 11
Independent Claim
175 words
A method for forming a ramp-shaped implant comprising the following steps: a) making a transverse cut across a long bone having an intramedullary canal to form a cortical ring; b) machining at least one of top and bottom surfaces of the cortical ring such that the top and bottom surfaces of the cortical ring converge towards one another in a direction towards a second end of the cortical ring, at least one of the top and bottom surfaces having a plurality of substantially V-shaped elongated, parallel grooves, the intramedullary canal of the long bone defining an opening having one end opening onto the top surface of the cortical ring and having a second end opening onto the bottom surface of the cortical ring; c) machining at least one of the top and bottom surfaces of the cortical ring to form a plurality of protrusions thereon; and; d) forming a threaded hole and a non-threaded hole in a first end of the implant, the threaded hole and non-threaded hole being dimensional to engage an insertion tool.
Claim 12
Dependent Claim
20 words
A method for forming a ramp-shaped implant according to claim 9 , wherein the protrusions include a series of ridges.
Claim 13
Dependent Claim
24 words
A method for forming a ramp-shaped implant according to claim 10 , wherein the machining steps further include use of a three-dimensional milling machine.
Claim 14
Dependent Claim
25 words
A method for forming a ramp-shaped implant according to claim 11 , wherein steps c) and d) are performed simultaneously using the three-dimensional milling machine.
Claim 15
Dependent Claim
21 words
A method for forming a ramp-shaped implant according to claim 9 , further including the step of partially demineralizing the bone.
Claim 16
Dependent Claim
31 words
A method for forming a ramp-shaped implant according to claim 13 , wherein the step of partially demineralizing the bone occurs before the cortical ring is cut from the long bone.
Claim 17
Dependent Claim
33 words
A method for forming a ramp-shaped implant according to claim 9 , further including the step of: d) machining sidewalls of the cortical ring to form an implant having a substantially rectangular configuration.
Claim 18
Dependent Claim
25 words
A method for forming a ramp-shaped implant according to claim 9 , further including the step of: d) infusing bone growth material into the bone.
Claim 19
Dependent Claim
35 words
A method of forming a ramp-shaped implant according to claim 9 , further including the step of: d) forming a plurality of perforations in surfaces of the implant other than the top and bottom surfaces.
Claim 20
Dependent Claim
24 words
A method of forming a ramp-shaped implant according to claim 9 , wherein at least one of the top and bottom surfaces is convex.
Claim 21
Independent Claim
139 words
A method for forming a ramp-shaped implant comprising the following steps: a) making a transverse cut across a long bone to form a cortical ring; b) machining at least one of the top and bottom surfaces of the cortical ring to taper the cortical ring from a first end of the cortical ring to a second end of the cortical ring and to provide a plurality of substantially V-shaped elongated, parallel grooves, the intramedullary canal of the long bone defining an opening having one end opening onto the top surface of the cortical ring and having a second end opening onto the bottom surface of the cortical ring; c) machining at least one of the top and bottom surfaces of the cortical ring to form a plurality of protrusions thereon; and d) infusing bone growth material into the bone.
Claim 22
Independent Claim
139 words
A method for forming a ramp-shaped implant comprising the following steps: a) making a transverse cut across a long bone to form a cortical ring; b) machining at least one of the top and bottom surfaces of the cortical ring to taper the cortical ring from a first end of the cortical ring to a second end of the cortical ring and to provide a plurality of substantially V-shaped elongated, parallel grooves, the intramedullary canal of the long bone defining an opening having one end opening onto the top surface of the cortical ring and having a second end opening onto the bottom surface of the cortical ring; c) machining at least one of the top and bottom surfaces of the cortical ring to form a plurality of protrusions thereon; and d) infusing bone growth material into the bone.
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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) | 2004-08-20 | 2005-02-19 | 2005-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-08-20 | 2009-02-19 | 2009-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-08-20 | 2013-02-19 | 2013-08-21 | $7700.00 | Window Closed / Lapsed |