Catheter Position Pressure Sensing Coil Integration
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Solution Overview
Problem
Conventional catheters with position and pressure sensing capabilities require a large number of sensor coils and leads, which are time-consuming and expensive to manufacture, occupy space, and are susceptible to breakage, limiting their efficiency and reliability in cardiac procedures.
Innovation Solution
A catheter design with a reduced number of sensing coils and leads, utilizing a flexible joint and mutually orthogonal sensor coils that respond to both internal and external magnetic fields to generate signals for position and pressure data, allowing for simplified signal processing and reduced lead failure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional catheters use multiple sensor coils and leads for position and pressure sensing, then sensing accuracy is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent combines position sensing and pressure sensing functions into a single integrated sensor coil assembly. The sensor coil serves dual purposes: detecting magnetic fields for position determination and sensing pressure through its mechanical response to tissue contact forces, thereby reducing the need for separate sensing components
Solution Approach 2:
The sensor coil is designed to perform multiple functions simultaneously - it acts as both a magnetic field sensor for position tracking and a pressure sensor for contact force detection. This multi-functional design eliminates the need for separate dedicated position and pressure sensing systems
2Reliability
If conventional catheters use multiple leads for sensor connections, then data transmission reliability is improved, but lead breakage risk increases
Solution Approach 1:
The patent merges multiple lead functions into a single integrated lead structure. By combining position and pressure sensor connections into one lead assembly, the total number of leads is reduced, which directly decreases the probability of lead breakage while maintaining all necessary data transmission channels
3Measurement precision
If conventional catheters use multiple sensor coils, then sensing coverage is improved, but manufacturing time and cost increase
Solution Approach 1:
The patent merges multiple sensor coil functions into a single integrated coil assembly that provides both position and pressure sensing capabilities. This consolidation significantly reduces the number of discrete components that need to be manufactured and assembled, thereby improving manufacturing efficiency and reducing production costs
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
The solution minimizes lead breakage and production costs, increases catheter yield, and ensures reliable data transmission for position and pressure sensing, enhancing the efficiency and safety of cardiac procedures by reducing the complexity of the catheter structure.
Implementation Method 1
The sensor coils are sensitive both to the internal magnetic field generator for generating signals representative of pressure exerted on the distal section and to a plurality of external magnetic field generators driven by a catheterization system for generating signals representative of position of the distal section
Data Source
AI summary
A catheter is responsive to external and internal magnetic field generators for generating position data of the catheter position and pressure data to determine pressured exerted on a distal end of the catheter when engaged with tissue, with a reduced number of sensing coils and reduced number of sensing coil leads for minimizing lead breakage and failure. The catheter includes a distal section adapted for engagement with patient tissue, where the distal section has a proximal portion, a distal portion and a flexible joint with a resilient member adapted to allow axial displacement and angular deflection between the proximal and distal portions of the distal section. The catheter may have three or less sensing coils with three or less leads, each transmitting signals between a respective sensing coil and the signal processor.