Catheter surgery simulation
AssigneeNational University Corporation Nagoya University
InventorsSeiichi Ikeda, Toshio Fukuda, Ikuo Takahashi
Life of this patent
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Abstract
It is possible to observe a state of stress applied to a region around a cavity replicating a body cavity such as a blood vessel and the like in a three-dimensional model. In catheter insert simulation, when stress is applied to the region around the cavity in the three-dimensional model, it is possible to observe the catheter state together with a photoelastic effect corresponding to the stress state in the surrounding region caused by the catheter.
Claims25
A catheter surgery simulator, which is a stress observation system of a three-dimensional model for detecting a photoelastic effect generated in light passing through a translucent three-dimensional model in which at least a region around a cavity replicating the body cavity is formed of an elastic material and into which a catheter can be inserted, comprising:
- a polarized light source and its corresponding polarizing filter at an observation side;
- and
- a phase shift filter disposed at an inner side of the polarized light source and its corresponding polarizing filter at the observation side, which allows a part of the light from the light source as a background color to pass through the polarizing filter at the observation side;
- wherein both of the photo elastic effect and a shadow of a catheter inserted in the three-dimensional model are made to be visible.
A stress observation method of a three-dimensional model, comprising;
- inserting a catheter into a translucent three-dimensional model in which at least a region around a cavity replicating the body cavity is formed of an elastic material,
- disposing the three-dimensional model between a polarized light source and its corresponding polarizing filter, thereby generating a photoelastic effect corresponding to the stress generated by the catheter in the region around thereof;
- and
- allowing a phase shift filter to intervene between the polarized light source and its corresponding polarizing filter, thereby allowing a shadow of the catheter inserted in the three-dimensional model to be observed together with the photoelastic effect.
A stress observing method of a three-dimensional model, comprising:
- inserting a catheter into a translucent three-dimensional model in which at least a region around a cavity replicating the body cavity is formed of an elastic material;
- disposing the three-dimensional model between a polarized light source and its corresponding polarizing filter, thereby generating a photoelastic effect corresponding to the stress generated by the catheter in the region around thereof;
- and
- disposing the polarizing filter in a state in which it is not orthogonal to the polarized light source, thereby allowing a shadow of the catheter inserted in the three-dimensional model to be observed together with the photoelastic effect.
Dependencies are inferred from the claim text.