Instrumentation for knee surgery
OwnerDerek James Wallace McMinninventor
Life of this patent
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Abstract
Instrumentation for use in knee surgery comprises an intramedullary rod (10) for insertion into an end of a femur (100) and a distraction device (62) coupleable to the intramedullary rod (10) and operable between the intramedullary rod (10) and the tibia for adjusting the tension of the collateral ligaments on either side of the knee. A cutting guide (70) is configured to locate over an intramedullary rod (10) that has been inserted into an end of a femur (100), such that the position of the cutting guide (70) relative to the intramedullary rod (10), and therefore the femur (100), is adjustable in at least the anterior-posterior direction. A kit for use in knee surgery is provided and a method of adjusting the tension of the collateral ligaments on either side of a knee is taught.
Claims25
Instrumentation for use in knee surgery, said instrumentation comprising:
- an intramedullary rod for insertion into an end of a femur;
- and
- a distraction device coupleable to the intramedullary rod and operable between the intramedullary rod and a tibia for adjusting the tension of the collateral ligaments on either side of the knee.
Instrumentation for use in knee surgery, said instrumentation comprising:
- a cutting guide configured to locate over an intramedullary rod, which has been inserted into an end of a femur, such that the position of the cutting guide relative to the intramedullary rod, and therefore the femur, is adjustable in at least the anterior-posterior direction.
A kit for use in knee surgery, said kit comprising two or more of the following instruments:
- an intramedullary rod for insertion into an end of a femur;
- a distraction device coupleable to an intramedullary rod and operable between the intramedullary rod and a tibia for adjusting the tension of the collateral ligaments on either side of the knee;
- a cutting guide configured to locate over an intramedullary rod, which has been inserted into an end of a femur, such that the position of the cutting guide relative to the intramedullary rod, and therefore the femur, is adjustable in at least the anterior-posterior direction;
- a guide for providing an indication of the relative positional relationship between a cutting guide and the anterior and/or posterior of the femur;
- and
- a rotation protractor configured to measure the degree of rotation between a cutting guide and the femur.
A tibial component for use in knee surgery, said tibial component comprising:
- a plateau with a distal surface configured for mating with a proximal end of a resected tibia,
- a locating stem extending from said distal surface for insertion into a medullary canal of a said tibia, and
- an annular protrusion extending from said distal surface to aid in attachment of the tibial component to a said tibia, when in use.
A method of adjusting the tension of the collateral ligaments on either side of a knee, said method comprising the steps of:
- inserting an intramedullary rod into an end of a femur;
- and
- operating a distraction device between the intramedullary rod and a tibia to adjust the tension of the collateral ligaments on either side of a said knee.
Dependencies are inferred from the claim text.