Implant for the replacement of vertebrae and/or stabilization and fixing of the spinal column
First Claim
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1. Spinal implant for vertebral replacement, stabilization and fixation in a spinal column, said implant comprising:
- a bracing pin having centering points at opposite ends engageable in spaced apart vertebrae of the spinal column, and a pin shank between said points;
an implant body fitted laterally over said pin in a direction transverse to an axis thereof between said spaced apart vertebrae and having end surfaces abutting same, said body having a laterally open groove receiving said pin and extending from end to end of said body between said end surfaces, opening at a mouth at an outer periphery of said body and extending into said body from said periphery to a center of said body; and
structuring on said surfaces for mutually fixing said surfaces and portions of said spaced apart vertebrae engaged thereby.
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Abstract
An implant for spinal column resection stabilization or fixing has a pin with points lodged in vertebrae of the column and onto which an implant body composed of segments can be slid transversely so that a groove of the body receives the pin. The segments of the body are locked together with tooth crowns and can be rotated relatively to offset the mouths of the grooves.
457 Citations
20 Claims
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1. Spinal implant for vertebral replacement, stabilization and fixation in a spinal column, said implant comprising:
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a bracing pin having centering points at opposite ends engageable in spaced apart vertebrae of the spinal column, and a pin shank between said points; an implant body fitted laterally over said pin in a direction transverse to an axis thereof between said spaced apart vertebrae and having end surfaces abutting same, said body having a laterally open groove receiving said pin and extending from end to end of said body between said end surfaces, opening at a mouth at an outer periphery of said body and extending into said body from said periphery to a center of said body; and structuring on said surfaces for mutually fixing said surfaces and portions of said spaced apart vertebrae engaged thereby. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. Spinal implant for vertebral replacement, stabilization and fixation in a spinal column, said implant comprising:
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a bracing pin having centering points at opposite end engageable in spaced apart vertebrae of the spinal column, and a pin shank between said points; an implant body fitted laterally over said pin transversely to an axis thereof between said spaced apart vertebrae and having end surfaces abutting same, said body having a laterally open groove receiving said pin and extending between said end surfaces and opening at a mouth at a periphery of said body and structuring on said surfaces for mutually fixing said surfaces and portions of said spaced apart vertebrae engaged thereby, said implant body being subdivided transversely to said pin into at least two adjoining body segments axially aligned along said pin and abutting one another at end faces of said body segments perpendicular to said axis, each of said body segments being formed with a segment of the groove having a respective segment of said mouth, said body segments being rotatable relative to one another to angularly offset said mouth segments about said axis, said end faces being formed with mutually engaging rings of teeth locking said body segments against angular self-displacement, said shank of said pin being of circular cross section with a diameter equal to a width of said groove. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification