Instrument for adjustment osteotomy of a lower extremity
First Claim
1. An instrument for performing an adjustment osteotomy of a lower extremity of a patient comprisinga securing frame (1);
- first and second fixation elements (7,
8) for attaching said frame to the skeleton of a lower extremity of a patient;
first and second securing components (6,
9) adjustably holding said first and second fixation elements, respectively, on said frame;
a saw guide (25) mounted on said frame, said saw guide being adjustable to a plurality of angles relative to said frame;
an angle-indicating scale plate (10) adjustably attached to one of said securing components;
a rotation axis pin (12) penetrating said scale plate for pointing toward a location on said skeleton for intersection of bone cuts to be made therein; and
an angle determining component (23) pivotable about said rotation axis pin and carrying said saw guide and two pointers (26,
27) aligned with each other and alignable with a projection of a mechanical loading axis of the extremity of the patient, whereby adjustment of said pointers directly causes adjustment of said saw guide.
1 Assignment
0 Petitions
Accused Products
Abstract
An instrument for performing a correctional osteotomy of a lower extremity of a patient has a securing frame (1), fixation elements (7, 8) for attaching the frame to the skeleton of the lower extremity of the patient, and securing components (6, 9) adjustably holding the fixation elements on the frame. A saw guide (25) is mounted on said frame so as to be angularly adjustable relative to the frame. An angle-indicating scale plate (10) is adjustably attached to one of the securing components. A rotation axis pin (12) penetrates the scale plate and points toward a location on the skeleton for intersection of bone cuts to be made. An angle determining component (23) is pivotable about the rotation axis pin and carries the saw guide and two pointers (26, 27) aligned with each other and alignable with a projection of a mechanical loading axis of the extremity of the patient, whereby adjustment of the pointers directly causes adjustment of the saw guide.
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Citations
8 Claims
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1. An instrument for performing an adjustment osteotomy of a lower extremity of a patient comprising
a securing frame (1); -
first and second fixation elements (7,
8) for attaching said frame to the skeleton of a lower extremity of a patient;first and second securing components (6,
9) adjustably holding said first and second fixation elements, respectively, on said frame;a saw guide (25) mounted on said frame, said saw guide being adjustable to a plurality of angles relative to said frame; an angle-indicating scale plate (10) adjustably attached to one of said securing components; a rotation axis pin (12) penetrating said scale plate for pointing toward a location on said skeleton for intersection of bone cuts to be made therein; and an angle determining component (23) pivotable about said rotation axis pin and carrying said saw guide and two pointers (26,
27) aligned with each other and alignable with a projection of a mechanical loading axis of the extremity of the patient, whereby adjustment of said pointers directly causes adjustment of said saw guide. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification