Posterior fixation system
DCFirst Claim
1. A multi-axial bone attachment assembly, comprising:
- a saddle member having a plurality of upright portions that define a channel through said saddle member, said saddle member further having a hole therethrough bounded by an inner wall, said hole forming a lower opening in said saddle member;
a bone anchoring member extending through said opening, said bone anchoring member including a head portion and an anchoring portion; and
a washer having a recessed portion for accommodating an orthopedic rod and said washer having an alignment member to minimize misalignment between the rod and said recessed portion, said washer being fitted within said hole of said saddle member and atop said bone anchoring member.
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Abstract
A posterior fixation system includes a saddle member, an anchoring member, an occipital plate, an occipital rod, and a cross-link connector. The anchoring member anchors the saddle member to bone. The saddle member includes a pair of upright portions that define a channel. The channel is adapted to receive an orthopedic rod, and the saddle member can include a hole to receive the anchoring member. The saddle member and the anchoring member can be coupled so as to allow multi-axial movement of the members. The anchoring member in one embodiment is a screw coupled to the hole of the saddle, and in another embodiment, the anchoring member is a hook. The offset member may be coupled to the saddle member to allow for offset connection of rods. Connection of individual rods can be accomplished by connecting the rods with the cross-link connector. The cross-link connector has an integrally formed cylindrical member that couples a pair of coupling portions together. The cylindrical member can be bent along multiple axes. The occipital plate secures the rods to the occipital bone of the skull. The occipital plate has a cross-shaped plate with a plurality of apertures defined in the plate and at least one saddle member coupled to the plate. Alternatively, the occipital rod can be secured to the occipital bone.
930 Citations
96 Claims
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1. A multi-axial bone attachment assembly, comprising:
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a saddle member having a plurality of upright portions that define a channel through said saddle member, said saddle member further having a hole therethrough bounded by an inner wall, said hole forming a lower opening in said saddle member;
a bone anchoring member extending through said opening, said bone anchoring member including a head portion and an anchoring portion; and
a washer having a recessed portion for accommodating an orthopedic rod and said washer having an alignment member to minimize misalignment between the rod and said recessed portion, said washer being fitted within said hole of said saddle member and atop said bone anchoring member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A spinal implant system, comprising:
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a saddle member having a plurality of upright portions that define a channel through said saddle member, said saddle member further having a transverse hole defined through said upright portions that is transverse with respect to said channel;
a bone anchoring member coupled to said saddle member for anchoring said saddle member to bone; and
an offset member adapted to couple to an orthopedic rod, said offset member having a body adapted to couple to said rod and a coupling member extending from said body through said transverse hole in said upright portions. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47)
a cross-shaped member having a longitudinal axis connecting first and second longitudinal ends and a transverse axis connecting first and second transverse ends, said cross-shaped member having a plurality of apertures therethrough; and
a plate saddle member coupled to said cross-shaped member, said plate saddle member having a plurality of upright portions that define a channel through said plate saddle member, wherein said rod is coupled in said channel.
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38. The system of claim 37, further comprising a cross-link connector having a pair of coupling ends each adapted to couple to a rod and a cylindrical member provided between said coupling ends, one of said coupling ends being coupled to said rod.
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39. The system of claim 21, further comprising:
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said orthopedic rod coupled to said offset member; and
a bone attachment assembly coupled to said orthopedic rod and spaced apart from said saddle member, said bone attachment assembly for anchoring said rod to bone.
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40. The system of claim 21, further comprising:
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said orthopedic rod coupled to said offset member;
a second offset member spaced apart from said offset member, said second offset member having a second body coupled to said orthopedic rod and a second coupling member extending from said second body; and
a bone attachment assembly spaced apart from said saddle member, said bone attachment assembly coupled to said second coupling member, said bone attachment assembly for anchoring said second offset member to bone.
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41. The system of claim 21, further comprising:
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said orthopedic rod coupled to said offset member; and
a cross-link connector having a pair of coupling ends each adapted to couple to a rod and a connecting member provided between said coupling ends, one of said coupling ends being coupled to said orthopedic rod.
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42. The system of claim 21, further comprising:
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said orthopedic rod coupled to said offset member;
a second offset member spaced apart from said offset member, said second offset member having a second body coupled to said orthopedic rod and a second coupling member extending from said second body;
a bone attachment assembly spaced apart from said saddle member, said bone attachment assembly coupled to said second coupling member, said bone attachment assembly for anchoring said second offset member to bone; and
a cross-link connector having a pair of coupling ends each adapted to couple to a rod and a connecting member provided between said coupling ends, one of said coupling ends being coupled to said orthopedic rod.
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43. The system of claim 21, further comprising:
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said orthopedic rod coupled to said offset member;
a second offset member spaced apart from said offset member, said second offset member having a second body coupled to said orthopedic rod and a second coupling member extending from said second body;
a bone attachment assembly spaced apart from said saddle member, said bone attachment assembly coupled to said second coupling member, said bone attachment assembly for anchoring said second offset member to bone;
a cross-link connector having a pair of coupling ends each adapted to couple to a rod and a connecting member provided between said coupling ends, one of said coupling ends being coupled to said orthopedic rod; and
an occipital plate coupled to said orthopedic rod, said plate including;
a cross-shaped member having a longitudinal axis connecting first and second longitudinal ends and a transverse axis connecting first and second transverse ends, said cross-shaped member having a plurality of apertures therethrough; and
a plate saddle member coupled to said cross-shaped member, said plate saddle member having a plurality of upright portions that define a channel through said plate saddle member, wherein said rod is coupled in said channel.
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44. The system of claim 21, wherein said body of said offset member comprises a rod-receiving bore.
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45. The system of claim 33, wherein at least one of said upright portions comprises a trough defined therein, and wherein said radially extending projection is positionable within said trough.
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46. The system of claim 34, wherein said snap-ring comprises a non-planar body.
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47. The system of claim 35, wherein said orthopedic rod comprises an upper plate portion and a lower rod portion.
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48. An orthopedic fixation plate, comprising:
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a cross-shaped member having a longitudinal axis connecting first and second longitudinal ends and a transverse axis connecting first and second transverse ends, said cross-shaped member having a plurality of apertures therethrough; and
a saddle member coupled to said cross-shaped member, said saddle member having a plurality of upright portions that define a channel through said saddle member. - View Dependent Claims (49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63)
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64. A multi-axial bone attachment assembly, comprising:
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a saddle member having a plurality of upright portions that define a channel through said saddle member, said saddle member further having a hole therethrough bounded by an inner wall, said hole forming a lower opening in said saddle member;
a bone anchoring member extending through said opening, said bone anchoring member including a coupling portion provided in said hole for permitting multi-axial movement of said anchoring member and an anchoring portion; and
an expansion member coupled to said anchoring member for expanding said coupling portion to lock said anchoring member into position. - View Dependent Claims (65, 66, 67, 68, 69, 70, 71, 72, 73, 74)
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75. A multi-axial bone attachment assembly, comprising:
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a saddle member having a plurality of upright portions that define a channel through said saddle member, said saddle member further having a hole therethrough bounded by an inner wall, said hole forming a lower opening in said saddle member;
a bone anchoring member extending through said opening, said bone anchoring member including a head portion and an anchoring portion;
a washer having a recessed portion for accommodating an orthopedic rod and a radially extending projection, said washer being fitted within said hole of said saddle member and atop said bone anchoring member; and
wherein said inner wall includes a groove, and said assembly further comprises a snap-ring fitted in said groove and over said washer to hold said washer in said hole of said saddle member. - View Dependent Claims (76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87)
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88. A multi-axial bone attachment assembly, comprising:
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a saddle member having a plurality of upright portions that define a channel through said saddle member, said saddle member further having a hole therethrough bounded by an inner wall, said hole forming a lower opening in said saddle member;
a bone anchoring member extending through said opening, said bone anchoring member including a head portion and an anchoring portion;
a washer having a recessed portion for accommodating an orthopedic rod and a radially extending projection, said washer being fitted within said hole of said saddle member and atop said bone anchoring member;
wherein said washer includes an upper portion and a lower portion, said recessed portion being a part of said upper portion and said projection being a part of said lower portion; and
wherein said inner wall includes a groove, and said assembly further comprises a snap-ring fitted in said groove and over said lower portion of said washer to hold said washer in said hole of said saddle member. - View Dependent Claims (89, 90, 91, 92, 93, 94, 95, 96)
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Specification