Patient specific instrumentation with MEMS in surgery

  • US 9,918,658 B2
  • Filed: 01/23/2017
  • Issued: 03/20/2018
  • Est. Priority Date: 07/24/2012
  • Status: Active Grant
First Claim
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1. A method for creating a patient specific instrument model with an inertial sensor unit, comprising:

  • obtaining, using one or more processors of a computer system, a patient specific bone model of at least part of a bone;

    identifying, using the one or more processors of the computer system, at least one contact surface of the bone;

    identifying, using the one or more processors of the computer system, orientation data related to the bone, a geometrical relation between the at least one contact surface and the orientation data being known;

    generating, using the one or more processors of the computer system, a patient specific instrument model having at least one surface negatively corresponding to the at least one contact surface of the bone;

    defining, using the one or more processors of the computer system, a connection configuration in the patient specific instrument model, the connection configuration including a receptacle configured for receiving an inertial sensor unit in the patient specific instrument model using said geometrical relation, the connection configuration relating a preset virtual orientation programmed into the inertial sensor unit to the orientation data of the bone such that a geometrical relation between the contact surface and the inertial sensor unit is known when the body and the inertial sensor unit are fixed to the bone; and

    outputting the patient specific instrument model with the receptacle configured for receiving the inertial sensor unit.

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