Expandable Membrane Catheter for 3D Tissue Mapping
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Solution Overview
Problem
Current tissue mapping systems require point-by-point position sensing, leading to increased procedure time and models with interpolated surface points, which are prone to errors.
Innovation Solution
A cardiac visualization catheter with an expandable membrane and cameras captures 2D images of the tissue anatomy, using a locational element to create a patient map by projecting images into a 3D space, allowing for mapping of natural, electrical, and created landmarks without the need for point-by-point sensing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If point-by-point position sensing is used to create tissue surface models, then the model includes measured position information, but the procedure time increases significantly
Solution Approach 1:
The patent replaces the mechanical point-by-point probing system with an optical imaging system. A camera captures the entire tissue surface area in a single view, eliminating the need for mechanical movement and repeated point measurements. This substitution of mechanical measurement with optical capture directly resolves the contradiction by maintaining measurement capability while dramatically reducing procedure time.
Solution Approach 2:
The patent transitions from one-dimensional point measurements (single position at a time) to two-dimensional area capture (entire surface in one image). By adding the spatial dimension of area capture, the system obtains comprehensive surface information simultaneously rather than sequentially, resolving the time-accuracy contradiction.
2Manufacturing precision
If a large number of points are measured to create a 3D model, then the model accuracy improves, but the procedure time increases
Solution Approach 1:
The patent uses a camera to create an optical copy (image) of the entire tissue surface area. This single captured image serves as a comprehensive representation of the surface topology, eliminating the need to physically measure numerous individual points. The optical copy preserves spatial relationships and surface features while capturing all information simultaneously, thus improving model accuracy without increasing procedure time.
3Loss of information
If point-by-point mapping is performed, then detailed position information is obtained, but the procedure becomes complex and time-consuming
Solution Approach 1:
The patent replaces the complex mechanical procedure of moving a probe to multiple points with a simple optical capture operation. The camera system automatically records the entire field of view in one action, eliminating the need for manual point-by-point navigation and measurement. This substitution maintains complete position information while dramatically simplifying the procedure.
Solution Approach 2:
The patent performs the entire surface capture action in advance with a single camera shot, obtaining all necessary position information before any analysis or modeling begins. This preliminary capture of complete spatial data eliminates the need for subsequent point-by-point measurements and simplifies the overall procedure workflow.
Data Source
AI summary
Visualization and ablation systems and catheters. The systems can capture a plurality of different 2D images of the patient's anatomy adjacent an expandable member, each of which visualizes at least one part of the patient that is in contact with the expandable membrane, tag each of the plurality of different 2D images with information indicative of the position and orientation of a locational element when each of the plurality of different 2D images was captured, create a patient map, wherein creating the patient map comprises placing each of the plurality of different 2D images at the corresponding tagged position and orientation into a 3D space, and display the patient map.