Air-Charged Catheter Standardization via Peak Pressure and Time
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Air-charged pressure sensing catheters produce pressure responses that are overdamped compared to water-filled and microtip catheters, leading to delayed pressure readings and underestimation of peak pressures, making it difficult to compare diagnostic values generated by different catheter technologies.
Innovation Solution
A system that calculates a standardized pressure value using the peak pressure and time to peak pressure from air-charged catheter data, applying the formula PStd=Ppeak*TPP^1.184-0.03, to align with water-filled catheter values, ensuring consistent clinical interpretations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If air-charged catheters are used for pressure sensing, then cost is reduced and ease of use is improved, but measurement precision deteriorates due to overdamping and delayed pressure readings
Solution Approach 1:
The patent applies parameter changes by modifying the physical state of the catheter filling medium from air to liquid (saline solution). This fundamental parameter change eliminates the compressibility issue inherent in air-charged catheters, thereby improving measurement precision while maintaining the cost-effectiveness and ease of use of disposable catheters.
2Device complexity
If air-charged catheters are used for pressure sensing, then device complexity is reduced, but measurement precision deteriorates due to overdamping
Solution Approach 1:
The patent changes the filling medium parameter from compressible gas to incompressible liquid, which eliminates overdamping effects. This allows simple catheter structures to achieve high measurement precision for peak pressures, resolving the contradiction between device simplicity and measurement accuracy.
3Ease of operation
If air-charged catheters are used for pressure sensing, then ease of operation is improved, but measurement precision deteriorates due to delayed pressure readings
Solution Approach 1:
By changing the medium from air to liquid, the patent eliminates compressibility and associated time delays in pressure transmission. This allows the catheter to maintain ease of operation while achieving accurate detection of transient pressure events without the delayed readings characteristic of air-charged systems.
Data Source
AI summary
Systems and methods are provided for providing a standardized pressure value representing a transient pressure event within a region of interest within a living body. An air-charged catheter is configured to record pressure data representing the region of interest. A measurement assembly includes a parameter calculation component configured to calculate at least a peak pressure representing the transient pressure event and a time to peak pressure, representing the time necessary to reach the peak pressure, from the recorded pressure data. A standardization component is configured to calculate the standardized pressure value as a function of the peak pressure and the time to peak pressure. A user interface is configured to display at least the standardized pressure value at an associated display.