US6432106B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anterior lumbar interbody fusion cage with locking plate
Assignee: DePuy Spine LLC
•
Filing: 1999-11-24
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Granted: 2002-08-13
•
Expires: 2019-11-24
Abstract
Abstract A spinal fixation assembly includes a fusion cage to which a plate is mated. The plate is configured to receive, retain and orient bone screws.
Inventors
- 👤 Robert Fraser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:57
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/30767; A61F2/30771; A61B; A61B17/00; A61B17/56; A61B17/58; A61F2/44; A61F2/4455; A61F2/4465; A61B17/68; A61B17/70; A61B17/7059; A61B17/80; A61B17/84; A61B17/86; A61F2/3094; A61F2/30965; A61F2/442; A61F2/46; A61F2/4603; A61F2/4611; A61F2/28; A61F2002/2835; A61F2002/30001; A61F2002/30108; A61F2002/3011; A61F2002/30112; A61F2002/30182; A61F2002/30187; A61F2002/30199; A61F2002/30224; A61F2002/3023; A61F2002/30316; A61F2002/30329; A61F2002/30383; A61F2002/30387; A61F2002/3039; A61F2002/30398; A61F2002/30535; A61F2002/30576; A61F2002/30578; A61F2002/30593; A61F2002/30604; A61F2002/30772; A61F2002/30774; A61F2002/30784; A61F2002/30787; A61F2002/30841; A61F2002/30845; A61F2002/30878; A61F2002/30891; A61F2002/30892; A61F2220/00; A61F2220/0025; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0028; A61F2230/0034; A61F2230/0063; A61F2230/0069; A61F2310/00; A61F2310/00005; A61F2310/00011; A61F2310/00023
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
128 words
A spinal fixation assembly comprising: a fusion cage having a posterior face, an anterior face, a superior face, and an inferior face; a plate slidably engaged with the fusion cage so as to be movable in a superior/inferior direction with respect to the fusion cage, the plate defining at least one tab having an aperture for receiving a bone screw, the at least one tab being angled with respect to the fusion cage in a direction anterior to the anterior face of the fusion cage; and a bone screw having a head and a shank, the shank being dimensioned to pass through the aperture in the plate, and the head being dimensioned to engage the plate to inhibit passage of the head through the aperture in the plate.
Claim 2
Dependent Claim
128 words
A spinal fixation assembly comprising: a fusion cage having a posterior face, an anterior face, a superior face, and an inferior face; a plate slidably engaged with the fusion cage so as to be movable in a superior/inferior direction with respect to the fusion cage, the plate defining at least one tab having an aperture for receiving a bone screw, the at least one tab being angled with respect to the fusion cage in a direction anterior to the anterior face of the fusion cage; and a bone screw having a head and a shank, the shank being dimensioned to pass through the aperture in the plate, and the head being dimensioned to engage the plate to inhibit passage of the head through the aperture in the plate.
Claim 3
Dependent Claim
21 words
The spinal fixation assembly of claim 1 , wherein the plate is mated to the anterior face of the fusion cage.
Claim 4
Dependent Claim
23 words
The spinal fixation assembly of claim 1 , wherein the plate and the fusion cage are joined with a mortise and a tenon.
Claim 5
Dependent Claim
70 words
The spinal fixation assembly of claim 1 , wherein the fusion cage includes a medial plane that separates the inferior face from the superior face to define an inferior side and a superior side, and wherein the plate defines a first aperture on a first tab on the inferior side of the fusion cage and a second aperture on a second tab on the superior side of the fusion cage.
Claim 6
Dependent Claim
18 words
The spinal fixation assembly of claim 4 , wherein the first tab and the second tab are flexible.
Claim 7
Dependent Claim
32 words
The spinal fixation assembly of claim 4 , wherein one of the first tab and the second tab is angled with respect to the plate at an angle between 15° and 60°.
Claim 8
Dependent Claim
31 words
The spinal fixation assembly of claim 4 , wherein one of the first tab and the second tab is angled with respect to the plate at an angle of about 20°.
Claim 9
Dependent Claim
26 words
The spinal fixation assembly of claim 4 , wherein the fusion cage defines a bore centered on the medial plane and open at the anterior face.
Claim 10
Dependent Claim
26 words
The spinal fixation assembly of claim 8 , wherein the plate defines a bore therethrough that is aligned with the bore defined by the fusion cage.
Claim 11
Dependent Claim
20 words
The spinal fixation assembly of claim 1 , wherein one of the superior face and the inferior face is convex.
Claim 12
Dependent Claim
23 words
The spinal fixation assembly of claim 1 , wherein the fusion cage is thicker at the anterior face than at the posterior face.
Claim 13
Dependent Claim
24 words
The spinal fixation assembly of claim 11 , wherein the fusion cage tapers at about 10° from the anterior face to the posterior face.
Claim 14
Dependent Claim
25 words
The spinal fixation assembly of claim 11 , wherein the fusion cage defines an annulus with a first transverse element and a second transverse element.
Claim 15
Dependent Claim
24 words
The spinal fixation assembly of claim 13 , wherein the first and second transverse elements extend from the anterior face to the posterior face.
Claim 16
Dependent Claim
21 words
The spinal fixation assembly of claim 14 , wherein the first transverse element is substantially parallel to the second transverse element.
Claim 17
Dependent Claim
30 words
The spinal fixation assembly of claim 1 , further including a plurality of fins extending outward from the fusion cage on one of the superior face and the inferior face.
Claim 18
Dependent Claim
31 words
The spinal fixation assembly of claim 1 , further including a notch on one of the superior face and inferior face that extends from the anterior face toward the posterior face.
Claim 19
Dependent Claim
132 words
A spinal fixation assembly comprising: a fusion cage having a posterior face, an anterior face, a superior face, and an inferior face; a plate mated to the anterior face of the fusion cage and having an inferior extension and a superior extension, the plate defining a first aperture in the inferior extension and a second aperture in the superior extension; and at least one bone screw having a head and a shank, the shank being dimensioned to pass through the aperture in the plate, and the head being dimensioned to engage the plate to inhibit passage of the head through the aperture in the plate; and wherein the inferior and superior extensions are angled with respect to the fusion cage in a direction anterior to the anterior surface of the fusion cage.
Claim 20
Dependent Claim
132 words
A spinal fixation assembly comprising: a fusion cage having a posterior face, an anterior face, a superior face, and an inferior face; a plate mated to the anterior face of the fusion cage and having an inferior extension and a superior extension, the plate defining a first aperture in the inferior extension and a second aperture in the superior extension; and at least one bone screw having a head and a shank, the shank being dimensioned to pass through the aperture in the plate, and the head being dimensioned to engage the plate to inhibit passage of the head through the aperture in the plate; and wherein the inferior and superior extensions are angled with respect to the fusion cage in a direction anterior to the anterior surface of the fusion cage.
Claim 21
Dependent Claim
36 words
The spinal fixation assembly of claim 18 , wherein one of the superior face and the inferior face is convex and wherein the fusion cage is thicker at the anterior face than at the posterior face.
Claim 22
Dependent Claim
24 words
The spinal fixation assembly of claim 19 , wherein the fusion cage tapers at about 10° from the anterior face to the posterior face.
Claim 23
Dependent Claim
25 words
The spinal fixation assembly of claim 19 , wherein the fusion cage defines an annulus with a first transverse element and a second transverse element.
Claim 24
Dependent Claim
24 words
The spinal fixation assembly of claim 21 , wherein the first and second transverse elements extend from the anterior face to the posterior face.
Claim 25
Dependent Claim
21 words
The spinal fixation assembly of claim 22 , wherein the first transverse element is substantially parallel to the second transverse element.
Claim 26
Dependent Claim
27 words
The spinal fixation assembly of claim 18 , wherein the plate is slidably engaged with the fusion cage so as to be movable in a superior/inferior direction.
Claim 27
Dependent Claim
23 words
The spinal fixation assembly of claim 24 , wherein the plate and the fusion cage are joined with a mortise and a tenon.
Claim 28
Dependent Claim
34 words
The spinal fixation assembly of claim 18 , wherein the inferior extension is a first tab that defines the first aperture and the superior extension is a second tab that defines the second aperture.
Claim 29
Dependent Claim
18 words
The spinal fixation assembly of claim 26 , wherein the first tab and the second tab are flexible.
Claim 30
Dependent Claim
32 words
The spinal fixation assembly of claim 26 , wherein one of the first tab and the second tab is angled with respect to the plate at an angle between 15° and 60°.
Claim 31
Dependent Claim
31 words
The spinal fixation assembly of claim 26 , wherein one of the first tab and the second tab is angled with respect to the plate at an angle of about 20°.
Claim 32
Dependent Claim
31 words
The spinal fixation assembly of claim 18 , wherein the fusion cage includes a medial plane and defines a bore centered on the medial plane and open at the anterior face.
Claim 33
Dependent Claim
26 words
The spinal fixation assembly of claim 30 , wherein the plate defines a bore therethrough that is aligned with the bore defined by the fusion cage.
Claim 34
Dependent Claim
30 words
The spinal fixation assembly of claim 18 , further including a plurality of fins extending outward from the fusion cage on one of the superior face and the inferior face.
Claim 35
Dependent Claim
31 words
The spinal fixation assembly of claim 18 , further including a notch on one of the superior face and inferior face that extends from the anterior face toward the posterior face.
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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) | 2005-08-12 | 2006-02-11 | 2006-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-08-12 | 2010-02-11 | 2010-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-08-12 | 2014-02-11 | 2014-08-13 | $7700.00 | Window Closed / Lapsed |