US20030199982A1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Peanut spectacle multi discoid thoraco-lumbar disc prosthesis
Assignee: SDGI Holdings Inc
•
Filing: 2003-05-22
•
Granted: —
•
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 08:57
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.
References Cited (Backward Citations)
US2677369A
Cited
US3876728A
Cited
US3875595A
Cited
US4023572A
Cited
US4116200A
Cited
US4349921A
Cited
US4309777A
Cited
US4645507A
Cited
US4759766A
Cited
US5534090A
Cited
US4800639A
Cited
US4757983A
Cited
US4599086A
Cited
US4743256A
Cited
US4932969A
Cited
US4834757A
Cited
US4759769A
Cited
US4908032A
Cited
US4766328A
Cited
US4908036A
Cited
US4917704A
Cited
US4904261A
Cited
US4904260A
Cited
US4946378A
Cited
US5035716A
Cited
US5122130A
Cited
US4997432A
Cited
US5002576A
Cited
US4911718A
Cited
US5015247A
Cited
US5484437A
Cited
US6080155A
Cited
US5797909A
Cited
US5741253A
Cited
US5593409A
Cited
US6096038A
Cited
US5545229A
Cited
US5108438A
Cited
US5489308A
Cited
US5084048A
Cited
US4932975A
Cited
US5306308A
Cited
US5080662A
Cited
US5236460A
Cited
US5314477A
Cited
US5176708A
Cited
US5192326A
Cited
US5123926A
Cited
US5192327A
Cited
US5314478A
Cited
US5234431A
Cited
US5320644A
Cited
US5383933A
Cited
US5507816A
Cited
US5425773A
Cited
US5401269A
Cited
US5534029A
Cited
US5496318A
Cited
US5403314A
Cited
US5489307A
Cited
US5720748A
Cited
US5534028A
Cited
US5425772A
Cited
US5716415A
Cited
US5443514A
Cited
US5514180A
Cited
US5712899A
Cited
US6017008A
Cited
US5897087A
Cited
US5527315A
Cited
US5549679A
Cited
US5609636A
Cited
US5649926A
Cited
US5658285A
Cited
US5865846A
Cited
US5723013A
Cited
US6059829A
Cited
US5782830A
Cited
US5645598A
Cited
US5722977A
Cited
US5885300A
Cited
US5782832A
Cited
US5902233A
Cited
US6022376A
Cited
US5893889A
Cited
US5888197A
Cited
US6086595A
Cited
US6059790A
Cited
US5865848A
Cited
US6063174A
Cited
US5888226A
Cited
US6228026B1
Cited
US6179874B1
Cited
US6083228A
Cited
US5928284A
Cited
US6063121A
Cited
US6228022B1
Cited
US6231306B1
Cited
US6033363A
Cited
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.