Apparatus For Guiding A Surgical Instrument
First Claim
1. Apparatus for guiding a cutting tool in a surgical procedure on a bone which comprises:
- a. a fixation block which can be fitted on to a bone, b. a guide block which can be fitted on to the fixation block, the guide block defining a path for a cutting tool, wherein (i) the guide block can be translated relative to the fixation block along a translation axis so as to vary the distance between the guide block and the fixation block, and (ii) the orientation of the guide block relative to the fixation block can be adjusted lo rotationally about a pivot axis which is approximately perpendicular to the translation axis, and c. a worm drive assembly for adjusting the orientation of the guide block rotationally relative to the fixation block about the said pivot axis.
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Abstract
Apparatus for guiding a cutting tool in a surgical procedure on a bone. The apparatus includes a fixation block which can be fitted on to a bone, a guide block which can be fitted on to the fixation block, and a worm drive assembly for adjusting the orientation of the guide block rotationally relative to the fixation block about the said pivot axis. The guide block defines a path for a cutting tool, in which (i) the guide block can be translated relative to the fixation block along a translation axis so as to vary the distance between the guide block and the fixation block, and (ii) the orientation of the guide block relative to the fixation block can be adjusted lo rotationally about a pivot axis which is approximately perpendicular to the translation axis.
222 Citations
29 Claims
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1. Apparatus for guiding a cutting tool in a surgical procedure on a bone which comprises:
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a. a fixation block which can be fitted on to a bone, b. a guide block which can be fitted on to the fixation block, the guide block defining a path for a cutting tool, wherein (i) the guide block can be translated relative to the fixation block along a translation axis so as to vary the distance between the guide block and the fixation block, and (ii) the orientation of the guide block relative to the fixation block can be adjusted lo rotationally about a pivot axis which is approximately perpendicular to the translation axis, and c. a worm drive assembly for adjusting the orientation of the guide block rotationally relative to the fixation block about the said pivot axis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A device for guiding an instrument in a guiding path when performing an invasive procedure on an extremity of a bone comprising:
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a fixing block fixable on the extremity of the bone in a fixing plane;
a guiding block mountable on the fixing block substantially in the fixing plane, wherein the guiding block defines the guiding path; and
a first manipulator for manipulating the guiding path rotationally with respect to the fixing block about an axis substantially perpendicular to the fixing plane and/or a second manipulator for manipulating the guiding path substantially linearly with respect to the fixing block along an axis substantially in the fixing plane, wherein the first manipulator and/or second manipulator are manipulable from a position or positions at or near to a transverse end of the device. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification