US6093205A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surgical implant
Assignee: Nuvasive Inc
•
Filing: 1998-06-25
•
Granted: 2000-07-25
•
Expires: 2018-06-25
Abstract
Abstract A prosthesis for the replacement of an intervertebral disc of the spine comprises a block of an elastomeric material, which is held under compression by an encapsulating textile fabric. A preferred version of the invention (see FIG. 8) has continuations of the encapsulating fabric forming an interdigitation, with the continuation of the upper fabric passing through a hole in the lower fabric and being attached to the lower vertebral body and the continuation of the lower fabric crossing to its fixation site on the upper vertebral body.
Inventors
- 👤 Alan Rory Mor McLeod
- 👤 Andre Jackowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:18
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/44; A61F2/442; A61B; A61B17/00; A61B17/04; A61B17/06; A61B17/06166; A61B17/064; A61B17/0642; A61B17/56; A61B17/58; A61B17/68; A61B17/84; A61B17/86; A61B2017/0647; A61F2/28; A61F2/2846; A61F2/3094; A61F2002/30001; A61F2002/30003; A61F2002/3006; A61F2002/30062; A61F2002/30064; A61F2002/30069; A61F2002/30108; A61F2002/3011; A61F2002/30112; A61F2002/30138; A61F2002/30158; A61F2002/30199; A61F2002/3028; A61F2002/30316; A61F2002/30317; A61F2002/30324; A61F2002/30329; A61F2002/30461; A61F2002/30535; A61F2002/30563; A61F2002/30576; A61F2002/30578; A61F2002/30604; A61F2002/30616; A61F2002/4495; A61F2220/00; A61F2220/0025; A61F2220/0075; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0017; A61F2230/0026; A61F2230/0063; A61F2250/00; A61F2250/0014; A61F2250/0036; Y; Y10; Y10S; Y10S606/00; Y10S606/907; Y10S606/908; Y10S606/91
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
40 words
A disc prosthesis comprising a block of an elastomeric or visco-elastic material which is encapsulated by a textile fabric and in which a flange, suitable for attachment to vertebral bodies, is provided as a fabric continuation of the encapsulating fabric.
Claim 2
Dependent Claim
40 words
A disc prosthesis comprising a block of an elastomeric or visco-elastic material which is encapsulated by a textile fabric and in which a flange, suitable for attachment to vertebral bodies, is provided as a fabric continuation of the encapsulating fabric.
Claim 3
Dependent Claim
20 words
A prosthesis according to claim 1 in which the elastomeric block is held under compression by the encapsulating textile fabric.
Claim 4
Dependent Claim
18 words
A prosthesis according to claim 1 in which the fabric is formed using weaving, knitting, braiding or embroidery.
Claim 5
Dependent Claim
36 words
A prosthesis according to claim 1 in which the block is encapsulated by inserting the block into a textile receptacle formed by folding the fabric on to itself and stitching or sealing closed the free edges.
Claim 6
Dependent Claim
39 words
A prosthesis according to claim 1, wherein the disc prosthesis has an upper surface and a lower surface and in which the upper surface of the disc has a larger surface area than the lower surface of the disc.
Claim 7
Dependent Claim
53 words
A prosthesis according to claim 1 in which the prosthesis is provided with an upper fabric flange and a lower fabric flange and in which the block is held in position by the upper and lower fabric flanges being fastened to each other in a line along the front edge of the disc.
Claim 8
Dependent Claim
58 words
A prosthesis according to claim 1 in which one continuation of the encapsulating fabric is provided and an other continuation of the fabric is provided, the one continuation of the fabric being interdigitated with said other continuation of the fabric by passing said other continuation of the fabric through a hole in said one continuation of the fabric.
Claim 9
Dependent Claim
44 words
A prosthesis according to claim 7 in which the interdigitation of the one continuation of the fabric and other continuation of the fabric defines the front of the prosthesis and in which an additional fabric element over the front of the prosthesis is provided.
Claim 10
Dependent Claim
39 words
A prosthesis comprising an element of elastomeric or visco-elastic material, the element being provided in a retaining fabric and in which a flange, suitable for attachment to vertebral bodies, is provided as a fabric continuation of the retaining fabric.
Claim 11
Dependent Claim
39 words
A prosthesis comprising an element of elastomeric or visco-elastic material, the element being provided in a retaining fabric and in which a flange, suitable for attachment to vertebral bodies, is provided as a fabric continuation of the retaining fabric.
Claim 12
Dependent Claim
28 words
A prosthesis according to claim 10 in which the element of elastomeric or visco-elastic material is a block having an upper surface, a lower surface, front and back.
Claim 13
Dependent Claim
32 words
A prosthesis according to claim 10 in which the block provides substantially equivalent behavior to the nucleus pulposis of a natural disc, during compression, distraction, horizontal gliding, axial rotation, flexion and extension.
Claim 14
Dependent Claim
31 words
A prosthesis according to claim 10 in which the maximum width of the upper surface of the block is greater than the maximum width of the lower surface of the block.
Claim 15
Dependent Claim
31 words
A prosthesis according to claim 10 in which the minimum width of the upper surface of the block is greater than the minimum width of the lower surface of the block.
Claim 16
Dependent Claim
55 words
A prosthesis according to claim 10 in which the front thickness of the block is more than the back thickness of the block, preferably the front thickness of the block is more than the back thickness of the block, the front being the portion of the block nearer the front of the spine in use.
Claim 17
Dependent Claim
21 words
A prosthesis according to claim 10 in which the block is wider towards the front face than towards the rear face.
Claim 18
Dependent Claim
32 words
A prosthesis according to claim 10 in which the maximum length, l, from the front face of the block to the rear face of the block is between 10 and 15 mm.
Claim 19
Dependent Claim
24 words
A prosthesis according to claim 10 in which the maximum width of the upper surface of the block is between 12.5 and 16.5 mm.
Claim 20
Dependent Claim
21 words
A prosthesis according to claim 10 in which the minimum lower width of the block is between 8.5 and 12.5 mm.
Claim 21
Dependent Claim
20 words
A prosthesis according to claim 10 in which the maximum thickness of the block is between 2.5 and 5.5 mm.
Claim 22
Dependent Claim
42 words
A prosthesis according to claim 10 in which the block provides planar upper and lower surfaces, the upper surface having a greater width than the lower surface, the block having a greater thickness towards the front face than towards the rear face.
Claim 23
Dependent Claim
76 words
A prosthesis according to claim 10 in which the retaining fabric is formed from a piece of fabric having a first portion and a second portion, the first and second portions being joined by an integral part of the fabric, the first and second portions being folded into opposition to one another, the edges of the first and second portions being stitched to one another to provide a restraining/encapsulating portion of the fabric for the block.
Claim 24
Dependent Claim
61 words
A prosthesis according to claim 21 in which the retained fabric is provided with one or more further portions, the one or more further portions being attached to one or both of the first and second portions, the one or more further portions providing closure for a pocket receiving the block, the pocket being formed by the first and second portions.
Claim 25
Dependent Claim
73 words
A prosthesis according to claim 22 in which the one or more further portions provides a first further portion and a second further portion, in which one of the first or second further portions is provided with an aperture and the first and second further portions are interdigitated by passing the other of the first or second further portions through the aperture in the said one of the first or second further portions.
Claim 26
Dependent Claim
25 words
A prosthesis according to claim 23 in which the first further portion is attached to the vertebrae adjacent the second portion of the retaining fabric.
Claim 27
Dependent Claim
70 words
A prosthesis according to claim 22 in which the first and second portions form a pocket receiving the block, a portion of one of the further portions passing through an aperture or gap in one of the other further portions thereby forming a closure for the pocket receiving the block, a pad block being provided within the pocket between the block and the closure for the pocket receiving the block.
Claim 28
Dependent Claim
26 words
A prosthesis according to claim 25 in which the pad block is formed of the retaining fabric material and is integral with the retaining fabric material.
Claim 29
Dependent Claim
22 words
A prosthesis according to claim 26 in which the pad block is formed by folding a portion of the retaining fabric material.
Claim 30
Dependent Claim
64 words
A prosthesis according to claim 22 in which the prosthesis is provided with one or more flanges and in which the block component of the prosthesis acts as a replacement for the nucleus pulposis, the fabric provides a replacement for the annulus and the flanges provide a replacement for the anterior longitudinal ligament which is the ligament extending along that portion of the spine.
Claim 31
Dependent Claim
65 words
A surgical technique for providing a disc prosthesis, the technique comprising removing the natural disc and replacing the disc with a prosthesis, the prosthesis comprising a block of an elastomeric or visco-elastic material which is encapsulated by a textile fabric and in which a flange is provided as a fabric continuation of the encapsulating fabric, the flange being attached to one or more vertebral bodies.
Claim 32
Dependent Claim
65 words
A surgical technique for providing a disc prosthesis, the technique comprising removing the natural disc and replacing the disc with a prosthesis, the prosthesis comprising a block of an elastomeric or visco-elastic material which is encapsulated by a textile fabric and in which a flange is provided as a fabric continuation of the encapsulating fabric, the flange being attached to one or more vertebral bodies.
Claim 33
Dependent Claim
25 words
A prosthesis according to claim 23 in which the second further portion is attached to the vertebrae adjacent the first portion of the retaining fabric.
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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) | 2003-07-25 | 2004-01-24 | 2004-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-07-25 | 2008-01-24 | 2008-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-07-25 | 2012-01-24 | 2012-07-25 | $7700.00 | Window Closed / Lapsed |