Method and device for calibrating a medical instrument
AssigneeBrainlab AG
InventorThomas Feilkas
Life of this patent
Estimating the term…
Abstract
A system and method for calibrating an object having at least one marker attached thereto, wherein a spatial position of the object is ascertained based on the at least one marker, and an outline, view or geometry of the object is optically detected from at least one side. The detected outline, view or geometry is compared with corresponding outlines, views or geometries of stored pre-calibration data of the object, said pre-calibration data representing a model of the object.
Claims23
A method for calibrating a medical instrument, comprising:
- optically detecting via an image capture device certain areas of the medical instrument from at least one side;
- comparing, with computer assistance, the detected certain areas with corresponding stored pre-calibration data of the medical instrument, said pre-calibration data representing data relevant to the function of the medical instrument;
- and
- ascertaining, with computer assistance, whether the medical instrument is calibrated based on the comparison.
A device for calibrating a medical instrument, comprising:
- a computing unit having a memory in which pre-calibration data of the medical instrument is stored, wherein the pre-calibration data includes data relevant to the function of the medical instrument;
- at least one first camera for detecting markers attached to the medical instrument;
- and
- at least one second camera for capturing at least one actual image of the medical instrument, wherein the at least one actual image includes certain areas corresponding to the stored pre-calibration data and the first camera and the second camera are communicatively coupled to the computing unit and exhibit a defined spatial relationship to each other, said spatial relationship determinable by the computing unit,
- wherein the computing unit ascertains whether or not the medical instrument is calibrated based on a comparison between the actual image of the medical instrument and a calculated virtual image, said virtual image based on a position of the markers detected by the first camera.
A device for calibrating a medical instrument, comprising:
- a computing unit having a memory in which pre-calibration data of the medical instrument is stored, wherein the pre-calibration data includes data relevant to the function of the medical instrument;
- and
- at least one camera for detecting markers attached to the medical instrument and for capturing at least one actual image of the medical instrument, wherein the at least one actual image includes certain areas corresponding to the stored pre-calibration data and the at least one camera is communicatively coupled to the computing unit,
- wherein the computing unit is configured to ascertain whether or not the medical instrument is calibrated based on a comparison between the actual image and a calculated virtual image, said virtual image based on a position of the markers detected by the first camera.
Dependencies are inferred from the claim text.