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System and method for robotic surgery

  • US 10,231,739 B1
  • Filed: 07/18/2018
  • Issued: 03/19/2019
  • Est. Priority Date: 08/28/2001
  • Status: Expired due to Term
First Claim
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1. A system for performing an arthroplasty surgery on a femur and tibia, the system comprising:

  • a robotic subsystem including a base, a support column having an upper end portion rotatable relative to the base, a main arm pivotally attached to the upper end portion of the support column and having an outer end portion, a secondary arm pivotally mounted to the outer end portion of the main arm and defining a longitudinal axis, a mounting section rotatable about the longitudinal axis and including a mounting flange rotatable about a mounting axis, motors and controls supported by the base, and a cutting tool mounted to the mounting section;

    a navigation subsystem in communication with the robotic subsystem, the navigation subsystem including a plurality of reflective locating devices;

    a control unit in communication with the robotic subsystem;

    a display in communication with the control unit;

    wherein the navigation subsystem is configured to provide the robotic subsystem, during the surgery, with information relating to positions of the femur and tibia thereby enabling separate tracking of the femur and tibia when the femur and tibia move during the surgery and the navigation subsystem is configured to cooperate with the robotic subsystem to determine a position of the cutting tool relative to the femur and tibia to guide movement of the cutting tool relative to the femur and tibia to cut away material from the femur and tibia,wherein the control unit is configured to receive information relating to the position of the cutting tool relative to the femur and tibia such that movement of the cutting tool relative to the femur during the surgery is viewable on the display and movement of the cutting tool relative to the tibia during the surgery is viewable on the display, wherein the plurality of reflective locating devices includes a first plurality of reflective locating devices for attaching to the femur and a second plurality of reflective locating devices for attaching to the tibia;

    an optically created guide including a three-dimensional image having visible light beams; and

    a support assembly including a flat surface to engage a foot of a patient and a pneumatically actuated piston and cylinder assembly operable to raise and lower the foot of the patient.

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