Heart Model Fiber Projection via Electric Potential
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Solution Overview
Problem
Current methods fail to effectively project characteristic information, such as fiber orientation, from one heart shape to another due to the complexity of heart shapes and the lack of suitable coordinate systems, leading to difficulties in establishing accurate correspondences between different hearts.
Innovation Solution
A modeling device with input sections for shape and characteristic information, virtually electrifying means to calculate electric potentials, and projecting means to specify spots based on electric potential, allowing for the projection of characteristics onto differently-shaped objects using a common scale without geometric calculations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional coordinate systems (XYZ-axes orthogonal coordinate system) are used to establish correspondence between spots of different hearts, then the coordinate system is simple and easy to use, but it is extremely difficult to set accurate correspondence between spots of two different hearts with complex and varying shapes
Solution Approach 1:
The patent transforms the correspondence problem from spatial coordinates to electrical potential parameters. By virtually electrifying the hearts and using electric potential values at corresponding spots, the system establishes accurate correspondence between different heart shapes without being constrained by geometric variations. This parameter transformation allows precise spot matching while maintaining ease of operation.
2Productivity
If fiber orientation information from animal hearts is directly applied to human heart models, then the information can be utilized for modeling, but the fiber orientation may contradict the outer shape of the human heart due to shape variations between species
Solution Approach 1:
The patent creates a virtual copy of the electrical potential distribution pattern from animal hearts and applies it to human heart models. By copying the electrical characteristics rather than directly copying geometric fiber orientation data, the system preserves the functional information while adapting it to the target heart shape, avoiding contradictions between fiber orientation and outer shape.
3Measurement precision
If geometric calculations are performed to set local coordinate systems at respective spots in the heart, then accurate local orientation can be defined, but the calculation requires a vast amount of computation and is not realistic
Solution Approach 1:
The patent replaces the mechanical/geometric calculation system with an electrical field-based system. Instead of performing complex geometric calculations to determine local coordinate systems, the system virtually electrifies the heart and uses electrical potential measurements to define spot correspondence and local orientation. This substitution dramatically reduces computational complexity while maintaining measurement precision.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables easy projection of characteristic information onto complex-shaped objects, establishing accurate correspondences and fitting the projected information to the outer shape of the target object, even if the source object has a complex shape.
Implementation Method 1
virtually electrifying means for obtaining by calculation, on a basis of the shape information that is input to the first input section, an electric potential at a spot in the object at a time when a predetermined voltage is applied to the object
Data Source
AI summary
A modeling device is disclosed that easily projects characteristic information obtained from an object onto a differently-shaped object, even if the object, from which the characteristic information is obtained, has a complex shape. A modeling device in one embodiment of the present invention includes a virtually electrifying section to calculate an electric potential at a spot in a heart at the time when a predetermined voltage is applied to the heart, and a projecting section to project a fiber orientation onto a heart model created on the basis of shape information that is input to the input section. The projecting section specifies a spot to be a target of projection on the basis of the electric potential obtained by the virtually electrifying section. Use of the electric potential in specifying the spot makes it possible to easily project the fiber orientation onto any heart having complex and various shapes.