Patent US20030199982A1 successfully refreshed from Google Patents.
US20030199982A1
Expired / Lapsed
US
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Peanut spectacle multi discoid thoraco-lumbar disc prosthesis
Assignee: SDGI Holdings Inc
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Filing: 2003-05-22
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Granted: —
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Expires: 2023-05-22
Abstract
Abstract A small profile, peanut spectacle-shaped prosthetic disc device is provided. The device housing is comprised of two longitudinally split hollow halves, between which are contained multiple discoid shaped resilient bodies which may be of a polymeric type, or they may contain hydrogel. These bodies may lie in concave surfaces located on the interior of each side of the split cylindrical housing. The housing halves, even under maximum physiological loads, do not contact one another directly. The shell shape permits relatively easy introduction of the implant into inter-vertebral spaces in the thoracic or lumbar region of the human spine.
Inventors
- 👤 Vincent Bryan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:36
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/44; A61F2/441; A61F2/30721; A61F2/30742; A61F2/442; A61F2/30744; A61F2002/30001; A61F2002/30003; A61F2002/30004; A61F2002/30014; A61F2002/30016; A61F2002/30108; A61F2002/3011; A61F2002/30112; A61F2002/30113; A61F2002/30121; A61F2002/30123; A61F2002/3013; A61F2002/30133; A61F2002/30199; A61F2002/30224; A61F2002/30225; A61F2002/30252; A61F2002/30253; A61F2002/30316; A61F2002/30329; A61F2002/30331; A61F2002/30462; A61F2002/30476; A61F2002/30507; A61F2002/30535; A61F2002/30563; A61F2002/30604; A61F2002/30667; A61F2002/30673; A61F2/30767; A61F2/30771; A61F2002/30772; A61F2002/30777; A61F2002/30784; A61F2002/30785; A61F2002/30787; A61F2002/3082; A61F2002/30822; A61F2/3094; A61F2002/30975; A61F2/4425; A61F2002/443; A61F2/46; A61F2002/4635; A61F2220/00; A61F2220/0025; A61F2220/0033; A61F2220/0075; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/001; A61F2230/0015; A61F2230/0063; A61F2230/0069; A61F2230/0073; A61F2230/0076; A61F2250/00; A61F2250/0014; A61F2250/0018; A61F2250/0019
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
48 words
1 . A disc prosthesis comprising, in combination, a housing, the housing including an upper half and a lower half, and a plurality of non-concentric, resilient, viscoelastic discs interposed between the upper half housing and the lower half housing to maintain the housing halves separate from one another.
Claim 2
Dependent Claim
48 words
1 . A disc prosthesis comprising, in combination, a housing, the housing including an upper half and a lower half, and a plurality of non-concentric, resilient, viscoelastic discs interposed between the upper half housing and the lower half housing to maintain the housing halves separate from one another.
Claim 3
Dependent Claim
22 words
2 . A disc prosthesis according to claim 1 wherein said discs are ovoid in shape and the housing is peanut shaped.
Claim 4
Dependent Claim
23 words
3 . A disc prosthesis according to claim 1 wherein each disc is partly surrounded by a concave surface formed within said housing.
Claim 5
Dependent Claim
21 words
4 . A disc prosthesis according to claim 1 wherein the housing halves are maintained a consistent distance from one another.
Claim 6
Dependent Claim
77 words
5 . A disc prosthesis for affixing within a human spine, the prosthesis comprising a peanut shaped upper half housing adapted to engage a cephalad vertebral bone inferior end plate and cancellous bone of a superior vertebral body; a peanut shaped lower half housing adapted to engage a caudal vertebral bone superior end plate and cancellous bone of an inferior vertebral body; and a plurality of separate, substantially solid and resilient discs interposed between the housing halves.
Claim 7
Dependent Claim
77 words
5 . A disc prosthesis for affixing within a human spine, the prosthesis comprising a peanut shaped upper half housing adapted to engage a cephalad vertebral bone inferior end plate and cancellous bone of a superior vertebral body; a peanut shaped lower half housing adapted to engage a caudal vertebral bone superior end plate and cancellous bone of an inferior vertebral body; and a plurality of separate, substantially solid and resilient discs interposed between the housing halves.
Claim 8
Dependent Claim
25 words
6 . A disc prosthesis according to claim 5 wherein each disc is partly surrounded by a concave surface formed within one of said housings.
Claim 9
Dependent Claim
99 words
7 . A plurality of disc prostheses for being located within a human spine, each prosthesis comprising an upper half housing adapted to engage a cephalad bone inferior end plate and cancellous bone of a superior vertebral body; a lower half housing adapted to engage a caudal vertebral bone superior end plate and cancellous bone of an inferior vertebral body; and at least two similarly sized resilient members interposed between the housing halves for maintaining a consistently spaced distance between the upper and lower half housings, the at least two similarly sized resilient members having a solid exterior surface.
Claim 10
Dependent Claim
99 words
7 . A plurality of disc prostheses for being located within a human spine, each prosthesis comprising an upper half housing adapted to engage a cephalad bone inferior end plate and cancellous bone of a superior vertebral body; a lower half housing adapted to engage a caudal vertebral bone superior end plate and cancellous bone of an inferior vertebral body; and at least two similarly sized resilient members interposed between the housing halves for maintaining a consistently spaced distance between the upper and lower half housings, the at least two similarly sized resilient members having a solid exterior surface.
Claim 11
Dependent Claim
30 words
8 . A plurality of disc prostheses according to claim 7 wherein one or more of the prosthesis halves have recesses defined in its exterior surface to permit bone ingrowth.
Claim 12
Dependent Claim
91 words
9 . A disc prosthesis comprising at least two resilient, viscoelastic discs interposed between an upper half housing adapted to engage a superior vertebral body and a lower half housing adapted to engage an inferior vertebral body, wherein the upper half housing and lower half housing are configured to maintain the at least two discs in a common plane and at a spaced distance from each other, and wherein the two discs are of sufficient thickness and resiliency to maintain a separation between the upper half housing and lower half housing.
Claim 13
Dependent Claim
91 words
9 . A disc prosthesis comprising at least two resilient, viscoelastic discs interposed between an upper half housing adapted to engage a superior vertebral body and a lower half housing adapted to engage an inferior vertebral body, wherein the upper half housing and lower half housing are configured to maintain the at least two discs in a common plane and at a spaced distance from each other, and wherein the two discs are of sufficient thickness and resiliency to maintain a separation between the upper half housing and lower half housing.
Claim 14
Dependent Claim
17 words
10 . A disc prosthesis according to claim 9 wherein the at least two discs are solid.
Claim 15
Dependent Claim
55 words
11 . A disc prosthesis comprising, in combination, a housing, the housing including at least two rigid, confronting and complimentary parts, the prosthesis further comprising at least two resilient, viscoelastic discs interposed between the housing parts to maintain the housing parts at a spaced distance and to permit limited motion from between the housing parts.
Claim 16
Dependent Claim
55 words
11 . A disc prosthesis comprising, in combination, a housing, the housing including at least two rigid, confronting and complimentary parts, the prosthesis further comprising at least two resilient, viscoelastic discs interposed between the housing parts to maintain the housing parts at a spaced distance and to permit limited motion from between the housing parts.
Claim 17
Dependent Claim
17 words
12 . A disc prosthesis according to claim 11 including a sheath attached to said housing halves.
Claim 18
Dependent Claim
43 words
13 . A disc prosthesis according to claim 11 in which a sealable portal is defined in said housing, the portal defining a passageway through which a lubricant or irrigant can be introduced into space between the nucleus and the housing interior surface.
Claim 19
Dependent Claim
20 words
14 . A disc prosthesis according to claim 11 wherein the housing has an exterior surface defining a spectacle-like formation.
Claim 20
Dependent Claim
46 words
15 . A disc prosthesis comprising an oblong shell having first and second housing portions and first and second flexible members interposed between the first and second housing portions, respectively, the first and second flexible members including a relatively soft interior and a relatively hard exterior.
Claim 21
Dependent Claim
46 words
15 . A disc prosthesis comprising an oblong shell having first and second housing portions and first and second flexible members interposed between the first and second housing portions, respectively, the first and second flexible members including a relatively soft interior and a relatively hard exterior.
Claim 22
Dependent Claim
41 words
16 . A disc prosthesis according to claim 15 wherein the first and second flexible members are positioned in a spaced relation to each other and are positioned an equal and opposite distance from a central point of the disc prosthesis.
Claim 23
Dependent Claim
50 words
17 . A disc prosthesis according to claim 15 wherein the shell further comprises a spacing portion for maintaining a spaced relation between the first and second housing portions, the spacing portion having a width that is less than a corresponding width of either the first or second housing portions.
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