Method of performing surgery
AssigneeMarctec, LLC
InventorPeter M. Bonutti
Life of this patent
Estimating the term…
Abstract
An improved method of performing surgery on a joint in a patient's body, such as a knee, includes making an incision in a knee portion of one leg while a lower portion of the one leg is extending downward from an upper portion of the one leg and while a foot connected with the lower portion of the one leg is below a support surface on which the patient is disposed. The incision is relatively short, for example, between seven and thirteen centimeters. A patella may be offset from its normal position with an inner side of the patella facing inward during cutting of a bone with a cutting tool. During cutting of the bone, one or more guide members having opposite ends which are spaced apart by a distance less than the width of an implant may be utilized to guide movement of a cutting tool.
Claims16
A cutting guide for making at least one cut on a bone comprising:
- a base having first and second faces and positionable at a fixed location with respect to the bone;
- at least one track on the base extending from the first face through the second face;
- a pin member sized to travel within the track;
- a locking element for setting the pin member at one of a number of positions within the track;
- and
- a cutting edge coupled to the pin member for guiding a cutting tool to make a cut on the bone,
- wherein movement of the pin member to a first position orients the cutting edge in a first orientation and movement of the pin member to a second position orients the cutting edge in a second orientation.
A cutting jig for preparing a bone to receive an implant comprising:
- a shaft having a portion insertable in a medullary canal of the bone for coupling the cutting jig to the bone;
- a length adjustment member slidable on the shaft to vary the length adjustment member location with respect to the shaft;
- an arm extending laterally from the length adjustment member, the arm rotatably connected with the length adjustment member;
- an extension extending from a lateral end of the arm;
- and
- a cutting guide located on an end of the extension, the cutting guide comprises a plurality of cutting edges,
- wherein there are five cutting edges, with first and second cutting edges substantially parallel to each other, a third cutting edge substantially perpendicular to the first and second cutting, a fourth cutting edge extending transversely from the third cutting edge and connecting the third cutting edge to the first cutting edge, and a fifth cutting edge extending transversely from the third cutting edge and connecting the third cutting edge to the second cutting edge.
Dependencies are inferred from the claim text.