Systems and methods for joint replacement
First Claim
Patent Images
1. An implant alignment device comprising:
- an orthopedic fixture having a base configured to couple with a distal portion of a femur, a moveable portion pivotable and configured to move relative to the base, and a guide member configured to couple with the moveable portion;
a reference device coupled to or integrally formed with the base or moveable portion of the orthopedic fixture, the reference device configured to sense changes in orientation of a long axis of the femur relative to a fixed reference frame; and
a surgical orientation device coupled to or integrally formed with the base or moveable portion of the orthopedic fixture to enable positioning of the guide member in a prescribed orientation relative to the distal femur;
wherein at least one of the surgical orientation device and the reference device is configured to send information about an orientation of the at least one of the surgical orientation device and reference device to the other of the surgical orientation device or reference device.
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Abstract
Systems and methods for joint replacement are provided. The systems and methods include a surgical orientation device, a reference sensor device, and at least one orthopedic fixture. The surgical orientation device, reference sensor device, and orthopedic fixtures can be used to locate the orientation of an axis in the body, to adjust an orientation of a cutting plane or planes along a bony surface, or otherwise to assist in an orthopedic procedure(s).
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Citations
20 Claims
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1. An implant alignment device comprising:
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an orthopedic fixture having a base configured to couple with a distal portion of a femur, a moveable portion pivotable and configured to move relative to the base, and a guide member configured to couple with the moveable portion; a reference device coupled to or integrally formed with the base or moveable portion of the orthopedic fixture, the reference device configured to sense changes in orientation of a long axis of the femur relative to a fixed reference frame; and a surgical orientation device coupled to or integrally formed with the base or moveable portion of the orthopedic fixture to enable positioning of the guide member in a prescribed orientation relative to the distal femur; wherein at least one of the surgical orientation device and the reference device is configured to send information about an orientation of the at least one of the surgical orientation device and reference device to the other of the surgical orientation device or reference device. - View Dependent Claims (2, 3, 4, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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5. A surgical orientation system comprising:
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a surgical orientation device comprising; a first portable housing configured to be coupled with a knee bone by way of one or more orthopedic fixtures; a first sensor located within the first housing, the first sensor configured to monitor the orientation of the first sensor in a coordinate system and to generate a signal corresponding to the orientation of the surgical orientation device relative to the coordinate system; and a display module configured to display an indication of a change in one or more angle measurements relative to the coordinate system based at least in part on the signal; and a reference device comprising; a second portable housing configured to connect to a knee bone by way of one or more orthopedic fixtures; and a second sensor located within the second housing, the second sensor configured to monitor the orientation of the second sensor relative to the coordinate system, the second sensor configured to generate orientation data corresponding to the monitored orientation of the reference device; an orthopedic fixture configured to be connected to a knee bone and with the surgical orientation device and reference device such that the surgical orientation device and reference device are separately moveable relative to each other; wherein at least one of the surgical orientation device and reference device is further configured to determine the spatial location of the mechanical axis of the leg; the orthopedic fixture comprising a base configured to couple with a distal portion of a femur, a moveable portion pivotable relative to the base, and a guide member configured to couple with the moveable portion; wherein at least one of the surgical orientation device and reference device is configured to send information about the spatial location of the mechanical axis to the other of the surgical orientation device or reference device. - View Dependent Claims (6, 7)
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20. An implant alignment device comprising:
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a femoral jig configured to be removably mounted on the distal portion of a femur, comprising; a fixed portion configured to be removably but fixedly coupled with a distal portion of a femur, a moveable portion pivotable relative to the fixed portion and having an adjustment member to adjust the location of the moveable portion about an axis to vary at least one of varus/valgus and flexion/extension, and a guide member configured to be coupled with the moveable portion and movable in response to movements by the moveable portion, the guide member being adapted to identify a cutting plane relative to the femur with respect to at least one of varus/valgus and flexion/extension; a reference device coupled to or integrally formed with one of the base or moveable portion of the alignment device, the reference device configured to sense changes in orientation of a long axis of the femur relative to a fixed reference frame; and a surgical orientation device coupled to or integrally formed with the other of the base or moveable portion of the orthopedic fixture to enable positioning of the guide member in a prescribed orientation relative to the distal femur; wherein at least one of the surgical orientation device and the reference device is configured to send information about an orientation of the at least one of the surgical orientation device and the reference device to the other of the surgical orientation device or reference device.
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Specification