Double-Layer Balloon Catheter for Accurate Surface Temperature Sensing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing balloon catheters for cryoablation face challenges in accurately monitoring balloon surface temperature due to deviations between estimated and actual temperatures, with current temperature measuring elements failing to comply with balloon expansion and contraction, leading to inaccurate ablation and potential breakage.
Innovation Solution
A double layered balloon catheter design with temperature measuring elements placed in the interlayer, secured by adsorption elements that displace relative to the balloon during expansion and contraction, ensuring accurate temperature monitoring without affecting balloon integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If temperature measuring elements are provided on the balloon surface to monitor balloon surface temperature, then measurement precision is improved, but the balloon expansion and contraction is affected and reliability deteriorates
Solution Approach 1:
The balloon is divided into an inner layer and an outer layer, with the temperature measuring element positioned in the interlayer between them. This segmentation allows the temperature sensor to monitor the outer surface temperature without being directly attached to it, thereby avoiding interference with the balloon's expansion and contraction while maintaining measurement capability.
Solution Approach 2:
The inner layer balloon acts as an intermediary between the outer layer balloon and the temperature measuring element. The temperature measuring element is positioned in the interlayer, using the inner layer as a mediator to indirectly monitor the outer surface temperature, thus avoiding direct attachment to the outer layer and preserving balloon functionality.
2Measurement precision
If temperature measuring elements are attached to the balloon surface, then measurement precision is improved, but the balloon uniform expansion is restrained and manufacturing precision deteriorates
Solution Approach 1:
By segmenting the balloon into inner and outer layers and positioning the temperature measuring element in the interlayer, the system eliminates direct attachment of sensors to the outer surface. This allows the outer layer to expand uniformly without restraint from rigid sensor attachments, while the inner layer and interlayer structure maintain the sensor's position for accurate temperature monitoring.
3Reliability
If temperature measuring elements are provided in the interlayer, then reliability is improved, but device complexity increases
Solution Approach 1:
The inner layer balloon serves multiple functions: it acts as a structural component of the balloon, provides a barrier between the cryogenic fluid and the outer layer, and serves as a mounting platform for the temperature measuring element through the interlayer. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in device complexity while improving reliability.
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 provides precise temperature information for improved ablation efficacy, reduces balloon distortion, minimizes breakage risk, and enhances procedural reliability by maintaining uniform balloon expansion and contraction.
Implementation Method 1
the adsorption element is a physical adsorption element that physically adsorbs the temperature measuring element to the inner or outer layer balloon
Implementation Method 2
The frozen liquid instantly vaporizes and adsorbs heat conducted from myocardial temperature to cool the tissue
Implementation Method 3
The frozen liquid instantly vaporizes and adsorbs heat conducted from myocardial temperature to cool the tissue
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
A balloon catheter (100) and an electrophysiological system, which aim to improve the operability of accurately monitoring the balloon surface temperature at the surface of a double-layered balloon (110). The balloon catheter (100) comprises a catheter body (130), a double-layered balloon (110), at least one temperature measuring element (120), and at least one adhesion piece (140); the temperature measuring element (120) is disposed in an interlayer (113) formed by an inner layer balloon (112) and an outer layer balloon (111); the adhesion piece (140) is adheringly connected to the temperature measuring element (120), and is simultaneously adheringly connected to the inner layer balloon (112) or the outer layer balloon (111); the temperature measuring element (120) is attached to the inner layer balloon (112) or the outer layer balloon (111) by means of the adhesion piece (140); when the double-layered balloon (110) is deformed, the adhesion piece (140) may be displaced relative to the inner layer balloon (112) or outer layer balloon (111) connected to the adhesion piece (140), which enables the temperature measuring element (120) to be displaced relative to the inner layer balloon (112) or outer layer balloon (111) connected to the adhesion piece (140).