Sensor Catheter Wiring Cross-Talk Reduction
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Solution Overview
Problem
Sensor catheters experience significant wire-to-wire cross-talk due to the bundling of multiple wires, which interferes with signal quality and performance during medical procedures.
Innovation Solution
Grouping wires into distinct subgroups, such as pairs or groups of three or more, and twisting them together to reduce electromagnetic interference and cross-talk, allowing for improved signal isolation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If multiple wires are bundled together to connect control equipment to sensors, then the catheter can transmit power and signals, but wire-to-wire cross-talk and electromagnetic interference increase
Solution Approach 1:
The wire bundle is segmented into multiple sub-bundles, with each sub-bundle containing wires that carry related signals. This segmentation isolates different signal types and reduces electromagnetic interference between unrelated wires, directly addressing the cross-talk problem while maintaining comprehensive signal transmission capability.
Solution Approach 2:
Twisted pair configurations act as an intermediary structure between individual wires and the external environment. The twisting creates a shielded configuration where each wire is protected by its paired wire, reducing the impact of external electromagnetic fields and minimizing cross-talk between adjacent twisted pairs.
2Device complexity
If wires are arranged in a single cable bundle, then the catheter structure is simple, but cross-talk among signal wires increases and ringdown performance deteriorates
Solution Approach 1:
The single cable bundle is divided into multiple sub-bundles with specific groupings. This segmentation creates distinct electromagnetic zones for different signal types, reducing interference and improving ringdown performance by isolating sensitive sensor signals from noisy drive signals, while adding only moderate structural complexity.
Solution Approach 2:
Different regions of the wire bundle are assigned different configurations based on local requirements. Sensitive signal wires receive enhanced protection through specific pairing and positioning, while power and drive wires are grouped separately. This localized optimization improves overall reliability without requiring complete redesign of the entire wiring system.
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 arrangement effectively minimizes cross-talk among signal wires, enhancing the accuracy and reliability of sensor measurements and imaging data collected during medical procedures.
Implementation Method 1
Grouping wires into distinct subgroups, such as pairs or groups of three or more, and twisting them together to reduce electromagnetic interference and cross-talk
Data Source
AI summary
Improved wiring arrangements for sensor catheters are provided to reduce wire-to-wire cross-talk wherein wires connecting the sensor of the sensor catheter to a processing unit are divided into a plurality of wire bundles contained within respective sheaths, with the wires in wire bundle twisted together reduce electromagnetic signal interference among the individual wires, or between wire bundles.