Patent ID: 9153146
Filing Date: 2015-10-06
Classification: A61B,G06T,G09B,G16H

Abstract:
1. A method for simulating a surgical procedure on a tangible, corporeal bodily object in a virtual environment provided by a processing unit, the virtual environment including a three-dimensional mathematically described model of the tangible, corporeal bodily object, which at least reflects the geometrical and mechanical properties of the tangible, corporeal bodily object, and a virtual instrument configured to interact with the three-dimensional, model the method comprising the steps of: receiving user input from an input device connected to said processing unit, controlling said virtual instrument and interactions of said virtual instrument with said model based on said user input, providing a pre-recorded video sequence of a tangible, corporeal bodily object being subjected to a surgical procedure, determining a perspective in which at least a portion of said pre-recorded video sequence is recorded and determining a two-dimensional projection of said model corresponding to the perspective in which said pre-recorded video sequence is recorded, displaying on a screen said pre-recorded video sequence which visually represents said two-dimensional projection, providing a rendered surface to simulate a surgical procedure, the rendered surface being only portions of said three-dimensional model which are affected by said virtual instrument, superimposing said rendered surface on said pre-recorded video sequence of a surgical procedure, during interaction between the virtual instrument and the three-dimensional model, determining which parts of the virtual instrument that are at least partly covered by protruding parts of the three-dimensional model, and displaying on said screen only parts of the virtual instrument that are not covered by said three-dimensional model, wherein the three-dimensional mathematically described model of the tangible, corporeal bodily object, further reflects the tactile properties of the tangible, corporeal bodily object.