Patent ID: 6112113
Filing Date: 2000-08-29
Classification: A61B

Abstract:
A surgical instrument measurement system for use in an image-guided surgery system comprising:a position measuring system for measuring positions, anda test system for measuring a surgical instrument having a reference part an and object part, wherein the test system comprisesa calibration site having a determined calibration position, wherein the instrument assumes a calibration position when the object part of the instrument is situated at the calibration site,a test site having a determined test position, wherein the instrument assumes a test position when the object part of the instrument is situated at the test site, wherein the calibration position of the instrument differs from the test position of the instrument, andmeans for calculating the relative measurements of the object part of the instrument with respect to the reference part of the instrument from the determined calibration position of the calibrations site and the determined test position of the test site and measurements by the position measuring system of the calibration position of the reference part of the instrument while the object part of the instrument is situated in the calibration site of the test system, and of the test position of the reference part of the instrument while the object part of the instrument is situated in the test site of the test system.