Catheter Data Merging via Transfer Function Correction
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Solution Overview
Problem
Existing electrical mapping systems for cardiac cavities face challenges in merging data from differently configured catheters, leading to potential distortions in the generated maps due to varying catheter specifications such as electrode size, shape, and material, which can hinder accurate navigation and treatment guidance.
Innovation Solution
The system employs a corrective coefficient or transfer function to adjust and scale the responses from one catheter to match a common frame of reference, allowing for the seamless merging of data from catheters with different configurations into a single, undistorted map.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If data from multiple catheters with different configurations are merged directly, then more comprehensive mapping coverage is achieved, but map distortion and inaccuracy occur due to varying catheter specifications
Solution Approach 1:
The patent applies parameter changes by transforming the electrical response data from different catheter configurations through mathematical operations. Specifically, it uses transfer functions and corrective coefficients to adjust parameters such as electrode spacing, electrode size, and material properties to a common reference frame, enabling accurate merging of data from catheters with varying specifications while maintaining map precision
Solution Approach 2:
The patent introduces an intermediary reference catheter configuration that serves as a common frame of reference. All other catheter data are transformed relative to this reference, acting as a mediator that enables compatibility between differently configured catheters while preserving mapping accuracy
2Manufacturing precision
If a common frame of reference is established for merging catheter data, then map accuracy is improved, but system complexity increases due to the need for transfer functions and corrective coefficients
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing transfer functions and corrective coefficients for different catheter configurations before actual mapping procedures. This preprocessing step creates a library of transformation parameters that can be automatically applied during data merging, reducing real-time computational complexity while maintaining high map accuracy
Solution Approach 2:
The patent transforms complex catheter configuration variations into standardized parameter adjustments by establishing reference relationships. This converts the complexity of handling diverse catheter specifications into manageable parameter transformations relative to a common reference frame
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
This approach enables accurate and distortion-free merging of data from differently configured catheters, providing a unified and reliable map for navigation and treatment planning, even when using catheters with distinct technical specifications.
Implementation Method 1
when electrical current is applied across two surface electrodes, a voltage gradient is created along the axis between the electrodes
Implementation Method 2
each catheter electrode senses voltage, timed to the creation of the gradient along each axis
Implementation Method 3
The responses from the second catheter are adjusted based on a corrective coefficient or transfer function. In one embodiment the transfer function is a magnifier that scales the responses (e.g., amplitudes) of the second catheter
Data Source
AI summary
The present disclosure is directed to merging data acquired from differently configured catheters on a common map. In use, physical characteristics of catheters influence recorded electrical signals/responses such that differently configured catheters (e.g., different electrode sizes, shapes, materials, spacings, etc.) may record different responses to measurements taken at the same location in response to the same excitation signal. To allow merging of data from differently configured catheters in a common map, the present disclosure applies a corrective coefficient or transfer function to the recorded electrical signals of one or both catheters to counter-balance variable influences of catheter specific characteristics on recorded signals.