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US 2022/0175400 A1Published application
Tensor device for revision knee arthroplasty
AssigneeZimmer, Inc.
InventorEric Greber
Life of this patent
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Abstract
Systems and methods may use a tensor device in various aspects of a knee revision. For example, the tensor device may include a femoral arm configured to couple with an end portion of a femoral intramedullary canal reamer and a tibial arm moveably connected to the femoral arm, the tibial arm configured to couple with an end portion of a tibial intramedullary canal reamer. The tensor device may include a component or be used to identify a knee gap or a component size for an implant.
Claims20
A tensor device comprising:
- a femoral arm configured to couple with an end portion of a femoral intramedullary canal reamer;
- a tibial arm moveably connected to the femoral arm, the tibial arm configured to couple with an end portion of a tibial intramedullary canal reamer;
- and
- a slider component coupled at a first end to the femoral arm and coupled at a second end to the tibial arm, the slider component configured to move based on movement of the femoral arm with respect to the tibial arm and the slider component including an indicator to identify a knee gap.
1 more element
A method of using a tensor device, the method comprising:
- receiving an indication including a joint line of a knee for a revision procedure;
- causing, using processing circuitry, a robotic arm to align a femoral arm of a tensor device parallel to an intramedullary axis of a tibia, according to the joint line, while a tibial arm of the tensor device is connected to an end portion of a tibial reamer;
- determining, using the processing circuitry, a component size for an implant based on the alignment of the femoral arm;
- and
- outputting the component size for display in a user interface.
2 more elements
A revision system comprising:
- a tensor device, including a femoral arm configured to couple with an end portion of a femoral intramedullary canal reamer, and a tibial arm configured to couple with an end portion of a tibial intramedullary canal reamer, and a slider component configured to move based on movement of the femoral arm with respect to the tibial arm;
- a robotic surgical device including:
- a robotic arm;
- memory, including instructions, which when executed by processing circuitry, cause the processing circuitry to:
- cause the robotic arm to move the femoral arm parallel to an intramedullary axis of a tibia, according to a joint line;
- determine a component size for an implant or a knee gap based on the alignment of the femoral arm;
- and
- output the component size or the knee gap for display in a user interface.
5 more elements
Dependencies are inferred from the claim text.