Radiofrequency Tissue Lesioning System with Temperature Feedback
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Solution Overview
Problem
Existing systems for treating gastrointestinal and rectal sphincter dysfunction using radiofrequency energy face challenges in creating tissue lesions without ablating or burning tissue, requiring precise temperature control to avoid both overheating and undertreatment.
Innovation Solution
An electrosurgical system that applies radiofrequency energy to create tissue lesions at specific tissue levels, utilizing accurate temperature measurement and cooling fluid application, with data collection hardware placed close to the tissue and a visual warning system to prevent overheating, ensuring consistent tissue treatment within a therapeutic range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If radiofrequency energy is applied to create tissue lesions, then therapeutic effect is improved, but tissue ablation or burning occurs
Solution Approach 1:
The system continuously monitors tissue temperature during radiofrequency energy application and provides real-time feedback to the operator. Temperature sensors detect thermal changes in the tissue, and the system adjusts energy delivery or alerts the operator to prevent temperature thresholds that cause ablation, thereby maintaining therapeutic effectiveness while avoiding tissue damage.
Solution Approach 2:
The system controls and adjusts key parameters including radiofrequency power levels, treatment duration, and cooling fluid flow rate to maintain tissue temperature within the therapeutic window. By dynamically modifying these parameters based on real-time temperature monitoring, the system achieves effective tissue heating for lesion creation while preventing excessive heating that would cause ablation.
2Object-affected harmful factors
If temperature monitoring is enhanced to prevent overheating, then tissue safety is improved, but system complexity increases
Solution Approach 1:
The system incorporates automatic temperature monitoring and control features that operate autonomously during treatment. Temperature sensors continuously measure tissue temperature, and the control system automatically adjusts energy delivery or activates cooling mechanisms without requiring constant manual intervention, thereby enhancing safety while minimizing the operational complexity burden on the operator.
Solution Approach 2:
The system introduces intermediate control mechanisms including temperature sensors, control circuits, and automated cooling systems that act as mediators between the radiofrequency energy source and the tissue. These intermediaries manage the thermal process, providing safety functions while keeping the overall system architecture manageable through modular design.
3Object-affected harmful factors
If cooling fluid is applied to prevent tissue damage, then tissue protection is improved, but treatment consistency varies
Solution Approach 1:
The system monitors tissue temperature in real-time and provides feedback control for cooling fluid delivery. Based on temperature readings, the system dynamically adjusts cooling fluid flow rate to maintain optimal tissue temperature, preventing both overheating and excessive cooling that could compromise treatment consistency. This closed-loop control ensures reproducible therapeutic effects while protecting tissue.
Solution Approach 2:
The cooling fluid delivery system is designed to be dynamic rather than static, with adjustable flow rates that adapt to real-time treatment conditions. The system can increase cooling during high-power phases and reduce or pause cooling during lower-power phases, maintaining consistent tissue temperature and treatment effectiveness while preventing thermal damage.
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 system effectively creates tissue lesions without ablating or burning tissue, reducing the incidence of undertreatment and ensuring reliable and consistent therapeutic effects for conditions like GERD and fecal incontinence.
Implementation Method 1
a generator for applying radiofrequency energy to the electrodes
Implementation Method 2
apply radiofrequency energy to tissue to create tissue lesions without ablating tissue
Implementation Method 3
utilizing accurate temperature measurement and cooling fluid application
Implementation Method 4
application of cooling fluid to the tissue during the surgical procedure to provide quick response to rising tissue temperatures
Data Source
AI summary
A system for controlling operation of a radiofrequency treatment device to apply radiofrequency energy to tissue to heat tissue to create lesions without ablating the tissue. The system includes a first treatment device having at least one electrode for applying radiofrequency energy to tissue, a controller including a connector to which a first treatment device is coupled for use, and a generator for applying radiofrequency energy to the electrodes. The controller controls application of energy so that the tissue is thermally treated to create lesions but preventing thermal treatment beyond a threshold which would ablate the tissue.