Method of preparing a femur and tibia in knee arthroplasty
First Claim
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1. A method of preparing a femur and tibia in surgery on a knee joint using a navigation system and a robotic system comprising a base, a plurality of arms movable relative to the base, and a cutting tool coupled to the plurality of arms so that the cutting tool is capable of movement in at least five degrees of freedom, said method comprising the steps of:
- arranging the navigation system to track movement of the femur and tibia during the surgery;
cutting away material from the femur with the cutting tool of the robotic system and without the use of physical resection guides wherein the navigation system cooperates with the robotic system to provide information associated with a position of the femur to the robotic system; and
cutting away material from the tibia with the cutting tool of the robotic system and without the use of physical resection guides wherein the navigation system cooperates with the robotic system to provide information associated with a position of the tibia to the robotic system,wherein the navigation system enables separate tracking of the femur and tibia so that the positions of the femur and tibia can be determined when the femur and tibia move during the surgery.
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Abstract
A method of preparing a femur and tibia in surgery on a knee joint using a navigation system and a robotic system. The navigation system tracks movement of the femur and tibia during the surgery. The navigation system may include a plurality of locating devices. The robotic system includes a base, a plurality of arms, and a cutting tool.
907 Citations
30 Claims
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1. A method of preparing a femur and tibia in surgery on a knee joint using a navigation system and a robotic system comprising a base, a plurality of arms movable relative to the base, and a cutting tool coupled to the plurality of arms so that the cutting tool is capable of movement in at least five degrees of freedom, said method comprising the steps of:
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arranging the navigation system to track movement of the femur and tibia during the surgery; cutting away material from the femur with the cutting tool of the robotic system and without the use of physical resection guides wherein the navigation system cooperates with the robotic system to provide information associated with a position of the femur to the robotic system; and cutting away material from the tibia with the cutting tool of the robotic system and without the use of physical resection guides wherein the navigation system cooperates with the robotic system to provide information associated with a position of the tibia to the robotic system, wherein the navigation system enables separate tracking of the femur and tibia so that the positions of the femur and tibia can be determined when the femur and tibia move during the surgery. - 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)
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28. A method of preparing a femur and tibia in surgery on a knee joint using a navigation system and a robotic system comprising a base, a plurality of arms movable relative to the base, and a cutting tool coupled to the plurality of arms so that the cutting tool is capable of movement in at least five degrees of freedom, said method comprising the steps of:
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arranging the navigation system to track movement of the femur and tibia during the surgery wherein the navigation system cooperates with the robotic system to provide information associated with positions of the femur and tibia to the robotic system; cutting away material from the femur with the cutting tool of the robotic system using a non-physical femur cutting guide and without the use of physical resection guides; and cutting away material from the tibia with the cutting tool of the robotic system using a non-physical tibia cutting guide and without the use of physical resection guides, wherein the non-physical femur and tibia cutting guides define target shapes for the femur and tibia corresponding to desired femoral and tibial implant components to guide the cutting of material from the femur and tibia, wherein the navigation system enables separate tracking of the femur and tibia so that the positions of the femur and tibia can be determined when the femur and tibia move during the surgery.
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29. A method of preparing a femur and tibia in surgery on a knee joint using a navigation system comprising a first plurality of locating devices and a second plurality of locating devices and a robotic system comprising a base, a plurality of arms movable relative to the base, and a cutting tool coupled to the plurality of arms so that the cutting tool is capable of movement in at least five degrees of freedom, said method comprising the steps of:
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attaching the first plurality of locating devices to the femur; attaching the second plurality of locating devices to the tibia; moving the cutting tool relative to the femur and tibia during the surgery; cutting away material from the femur and tibia with the cutting tool of the robotic system and without the use of physical resection guides; affixing a first member of a knee implant to one of a medial and lateral condyle of the femur to replace at least a portion of the material cut away from the femur, the first member including a first articulating surface and wherein the other of the medial and lateral condyles is not provided with an affixed articulating surface; affixing a second member of the knee implant to the tibia opposite the first member to replace at least a portion of the material cut away from the tibia; and moving the tibia relative to the femur after affixing the first and second members in order to evaluate a relationship between the first and second members as represented on a display, wherein attaching the first plurality of locating devices to the femur and attaching the second plurality of locating devices to the tibia enables separate tracking of the femur and tibia so that the positions of the femur and tibia can be determined when the femur and tibia move during the surgery. - View Dependent Claims (30)
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Specification