×

Systems and methods for providing alignment in total knee arthroplasty

  • US 9,955,983 B2
  • Filed: 03/21/2017
  • Issued: 05/01/2018
  • Est. Priority Date: 03/15/2013
  • Status: Active Grant
First Claim
Patent Images

1. A computer implemented method for aligning a cutting guide for a total knee arthroplasty in a patient using a processing unit comprising a computer processor coupled to a non-transitory memory, a receiver, and a display, the method comprising:

  • i) receiving by the processing unit orientation data wirelessly from a first bone sensor attached to the patient'"'"'s first bone;

    ii) receiving by the processing unit orientation data wirelessly from a first bone guide sensor, the first bone guide sensor being attached to a first bone guide that includes probes for interfacing with the first bone in a known geometry;

    iii) calculating by the processing unit, based on the orientation data from the first bone guide sensor and the first bone sensor, angular offsets that calibrate the first bone sensor'"'"'s orientation data to reflect the orientation of the mechanical axis of the first bone;

    iv) receiving by the processing unit orientation data wirelessly from a first bone cutting guide sensor that is attached to a first bone cutting guide that is connected to the patient;

    v) displaying by the processing unit to a user a difference between the orientation of the mechanical axis of the first bone and the orientation of the first bone cutting guide;

    vi) receiving by the processing unit orientation data wirelessly from a second bone sensor attached to the patient'"'"'s second bone;

    vii) receiving by the processing unit orientation data wirelessly from a second bone guide sensor, the second bone guide sensor being attached to a second bone guide that includes probes for interfacing with the second bone in a known geometry;

    viii) calculating by the processing unit, based on the orientation data from the second bone guide sensor and the second bone sensor, angular offsets that calibrate the second bone sensor'"'"'s orientation data to reflect the orientation of the mechanical axis of the second bone;

    ix) receiving by the processing unit orientation data wirelessly from a second bone cutting guide sensor that is attached to a second bone cutting guide that is connected to the patient; and

    x) displaying by the processing unit to a user a difference between the orientation of the mechanical axis of the second bone and the orientation of the second bone cutting guide.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×