Bone fixation device with a rotation joint
First Claim
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1. A fixation device for connecting bone portions comprising:
- a first plate and a second plate, each plate having a top surface, a bottom surface for contacting bone, and at least one fixation bore extending from the top surface to the bottom surface;
at least one member associated with at least one of the plates; and
a releasably lockable joint, wherein the at least one member permits translation of the plates with respect to each other along a translation axis, and the releasably lockable joint permits swivelling of the plates with respect to each other about a swivel axis oriented transverse to the translation axis, and the releasably lockable joint comprises a first clamping member disposed in a sleeve, the first clamping member being configured and dimensioned to exert a force against the sleeve, and the releasably lockable joint further comprises a straining member for translating the first clamping member with respect to the sleeve.
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Abstract
The invention relates to a bone fixation device which includes a pair of bone plates and a longitudinal carrier. The longitudinal carrier can be used to permit the bone plates to telescope with respect to one another, such as in a direction parallel to the longitudinal axis of the vertebral column. A joint also may be used to permit swivelling of the plates with respect to each other.
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Citations
46 Claims
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1. A fixation device for connecting bone portions comprising:
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a first plate and a second plate, each plate having a top surface, a bottom surface for contacting bone, and at least one fixation bore extending from the top surface to the bottom surface;
at least one member associated with at least one of the plates; and
a releasably lockable joint, wherein the at least one member permits translation of the plates with respect to each other along a translation axis, and the releasably lockable joint permits swivelling of the plates with respect to each other about a swivel axis oriented transverse to the translation axis, and the releasably lockable joint comprises a first clamping member disposed in a sleeve, the first clamping member being configured and dimensioned to exert a force against the sleeve, and the releasably lockable joint further comprises a straining member for translating the first clamping member with respect to the sleeve. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 44, 45, 46)
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35. (Amended) A fixation device for connecting bone portions comprising:
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first and second plates, each plate having a top surface, a bottom surface for contacting bone, and a fixation bore extending from the top surface to the bottom surface;
first and second members, each member being slidably associated with the first plate and second plate respectively; and
a releasably lockable joint defining a first axis and comprising a clamping member disposed in a sleeve, wherein the members permit translation of the plates with respect to each other, the joint permits angulation of one of the plates with respect to at least one of the members about the first axis, and the clamping member is actuable with respect to the sleeve to releasably fix the angulation, the sleeve located in a joint bore and the joint is located above the bottom surface of at least one of the plates. - View Dependent Claims (36, 37, 38, 39, 40, 41, 42, 43)
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Specification