Patent US6267764B1 successfully refreshed from Google Patents.
US6267764B1
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Osteosynthesis system with elastic deformation for spinal column
Assignee: Stryker European Operations Holdings LLC
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Filing: 1997-11-13
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Granted: 2001-07-31
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Expires: 2017-11-13
Abstract
Abstract The osteosynthesis system has two anchor members ( 2 ) adapted to be fixed to two vertebrae ( 4 ), and a link member ( 6; 106 ) adapted to interconnect the anchor members and to exert stresses against the two anchor members moving towards each other in translation. The link member ( 6; 106 ) is elastically deformable in bending about a deformation axis ( 45, 47, 49 ). It has two fixing portions ( 16 ) adapted to be fixed to the two anchor members ( 2 ) and an intermediate portion ( 40 ). The intermediate portion is offset from an alignment axis ( 18 ) of the two fixing portions ( 16 ). The link member ( 6; 106 ) has two abutments ( 39 ) disposed so as to come into abutment against each other when the link member is deformed about the axis.
Inventors
- 👤 Jean-François Elberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:59
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/70; A61B17/7001; A61B17/7002; A61B17/7019; A61B17/7026; A61B17/7014; A61B17/7004
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
197 words
An osteosynthesis system for the spinal column, the system comprising at least two anchor members ( 2 ) adapted to be fixed to two vertebrae ( 4 ) of the spinal column, and a link member ( 6 ; 106 ) adapted to interconnect the two anchor members in translation towards each other, the link member ( 6 ; 106 ) being elastically deformable in bending about at least one deformation axis ( 45 , 47 , 49 ), the link member ( 6 ; 106 ) having at least two fixing portions ( 16 ) adapted to be fixed to the two anchor members ( 2 ), and at least one intermediate portion, the intermediate portion being offset from an alignment axis defined by the two fixing portions ( 16 ), wherein for at least one intermediate portion the link member ( 6 ; 106 ) further has two abutments ( 39 ) facing each other and disposed so as to come into abutment against each other when the link member is deformed about at least one deformation axis, in a given direction of rotation and through an angle (a) equal to a predetermined limit value.
Claim 2
Dependent Claim
197 words
An osteosynthesis system for the spinal column, the system comprising at least two anchor members ( 2 ) adapted to be fixed to two vertebrae ( 4 ) of the spinal column, and a link member ( 6 ; 106 ) adapted to interconnect the two anchor members in translation towards each other, the link member ( 6 ; 106 ) being elastically deformable in bending about at least one deformation axis ( 45 , 47 , 49 ), the link member ( 6 ; 106 ) having at least two fixing portions ( 16 ) adapted to be fixed to the two anchor members ( 2 ), and at least one intermediate portion, the intermediate portion being offset from an alignment axis defined by the two fixing portions ( 16 ), wherein for at least one intermediate portion the link member ( 6 ; 106 ) further has two abutments ( 39 ) facing each other and disposed so as to come into abutment against each other when the link member is deformed about at least one deformation axis, in a given direction of rotation and through an angle (a) equal to a predetermined limit value.
Claim 3
Dependent Claim
48 words
A system according to claim 1 , wherein at least one of the deformation axes extends perpendicularly to a longitudinal direction ( 10 ) of each anchor member ( 2 ) and to a longitudinal direction ( 18 ) of the link member ( 6 ; 106 ).
Claim 4
Dependent Claim
49 words
A system according to claim 1 , wherein at least one of the deformation axes extends substantially parallel to a longitudinal direction ( 10 ) of each anchor member ( 2 ) and to a longitudinal direction ( 18 ) of the link member ( 6 ; 106 ).
Claim 5
Dependent Claim
33 words
A system according to claim 1 , wherein at least one of the deformation axes extends parallel to a longitudinal direction ( 18 ) of the link member ( 6 ; 106 ).
Claim 6
Dependent Claim
26 words
A system according to claim 1 , wherein the alignment axis lies between the intermediate portion ( 40 ) and the two abutments ( 39 ).
Claim 7
Dependent Claim
24 words
A system according to claim 1 , wherein the intermediate portion ( 40 ) has an outer surface ( 30 ) of spherical shape.
Claim 8
Dependent Claim
26 words
A system according to claim 1 , wherein each of the two abutments ( 39 ) has an outer surface ( 30 ) of spherical shape.
Claim 9
Independent Claim
37 words
A system according to claims 6 or 7 , wherein the spherical surface ( 30 ) of the intermediate portion and the spherical surfaces ( 30 ) of the two abutments have a common center of curvature.
Claim 10
Dependent Claim
53 words
A system according to claim 1 , wherein for at least one pair of fixing portions, the link member ( 6 ) has a junction part ( 28 ) contiguous with the two fixing portions, the junction part associated with at least one of the pairs of fixing portions being a single piece.
Claim 11
Dependent Claim
75 words
A system according to claim 1 , wherein for at least one pair of fixing portions the link member ( 106 ) has a junction part ( 128 ) contiguous with the two fixing portions, the junction part associated with at least one of the pairs of fixing portions having first and second mutually distinct link elements ( 106 a, 106 b ) and fixing means for fixing the first and second link elements together.
Claim 12
Dependent Claim
43 words
A system according to claim 10 , wherein the fixing means are adapted to enable the distance between the two associated anchor members ( 2 ) to be adjusted in the longitudinal direction ( 18 ) of the link member ( 106 ).
Claim 13
Dependent Claim
77 words
A system according to claim 11 , wherein the second link member ( 106 b ) comprises a rod ( 144 ) and the first link member ( 106 a ) has a housing suitable for receiving the rod, the first link member ( 106 a ) including locking means ( 152 ) for locking the rod inside the housing in a plurality of positions along the longitudinal direction ( 18 ) of the second link member.
Claim 14
Dependent Claim
30 words
A system according to claim 1 , wherein it is adapted so that the alignment axis lies between the intermediate portion ( 40 ) and the vertebrae ( 4 ).
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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) | 2004-07-30 | 2005-01-29 | 2005-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-07-30 | 2009-01-29 | 2009-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-07-30 | 2013-01-29 | 2013-07-31 | $7700.00 | Window Closed / Lapsed |