RF Energy Generator With Adaptive PID for Denervation Temperature Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing RF energy generators for denervation procedures fail to accurately adjust output intensity based on the varying characteristics of individual body tubes, leading to potential tissue damage or ineffective treatment due to fixed PID control constants.
Innovation Solution
An RF energy generator that adjusts PID control constants based on real-time temperature variance of the body tube, using a receiving unit to collect temperature data, a controller to calculate and determine RF energy intensity, and an output unit to deliver energy based on these calculations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If PID control constants are set based on typical medium-sized tube characteristics, then the control system can operate with fixed parameters, but the temperature control becomes inaccurate for tubes with varying thicknesses
Solution Approach 1:
The patent implements dynamic adjustment of PID control constants based on real-time temperature variance detection. The system transitions from fixed parameters to adaptive parameters that automatically adjust according to the actual thermal characteristics of the tube being treated, enabling accurate temperature control across varying tube thicknesses
Solution Approach 2:
The system continuously monitors temperature variance during RF energy delivery and uses this feedback to dynamically adjust PID control constants. This closed-loop feedback mechanism enables the system to adapt to different tube characteristics in real-time, resolving the contradiction between fixed parameter simplicity and adaptive precision
2Reliability
If RF energy output is not adjusted according to individual tube characteristics, then the device structure remains simple, but tissue damage or ineffective treatment occurs
Solution Approach 1:
The system employs real-time temperature monitoring and variance calculation to provide feedback on the actual thermal state of the tube. This feedback enables automatic adjustment of RF energy output to prevent both tissue damage from excessive heating and ineffective treatment from insufficient heating, thereby improving reliability
Solution Approach 2:
The patent dynamically changes the PID control parameters based on detected temperature variance patterns. By adjusting these parameters in real-time according to actual thermal response, the system adapts to individual tube characteristics without requiring complex manual configuration, balancing safety with manageable device complexity
Data Source
Figure 1A~1B
Figure 2
Figure 3
AI summary
An RF energy generator that outputs RF energy to an electrode apparatus for blocking or controlling nerves in body includes: a receiving unit configured to receive temperature data of a tube in a body from the electrode apparatus; a controller configured to calculate a temperature value of the tube in the body based on the received temperature data, calculate a temperature variance of the tube in the body based on the calculated temperature value of the tube in the body, and determine an intensity of RF energy through PID control based on the temperature variance of the tube; and an output unit configured to output the RF energy to the electrode apparatus based on the determined intensity of RF energy.