Multi-Sensor Ablation Probe for DRG Alignment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for treating chronic back pain, particularly targeting the dorsal root ganglia (DRG), lack precise localization and effective ablation techniques, leading to inefficiencies in pain management.
Innovation Solution
An ablation system comprising an elongated probe with electrical sensors and an electrode, where the sensors measure electrical characteristics to determine alignment with the DRG, and a computer-controlled interlock switch ensures precise alignment and power application for targeted ablation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If electrical sensors are used to detect DRG alignment, then localization precision is improved, but device complexity increases
Solution Approach 1:
The probe is divided into functionally distinct segments: electrical sensors for detection, treatment electrode for ablation, and radiofrequency coil for heating. Each component operates independently but contributes to the overall therapeutic effect, allowing precise localization and treatment while managing system complexity through modular functional separation.
Solution Approach 2:
The probe integrates multiple functions into a single device: electrical sensing for localization, radiofrequency heating for tissue ablation, and electrical stimulation for therapeutic effect. This multi-functionality eliminates the need for separate localization and treatment devices, resolving the complexity issue while maintaining high measurement precision.
2Productivity
If radiofrequency heating is applied to ablate DRG, then ablation effectiveness is improved, but risk of thermal damage to surrounding tissue increases
Solution Approach 1:
The radiofrequency heating and ablation are confined to the immediate vicinity of the treatment electrode through localized electromagnetic energy deposition. The electrical sensors and treatment electrode are positioned to deliver energy precisely to the DRG target while surrounding tissues remain outside the thermal zone, achieving effective ablation with minimal collateral thermal damage.
Solution Approach 2:
The electrical sensors perform preliminary localization and confirmation of DRG alignment before the radiofrequency heating and ablation are initiated. This sequential approach ensures the treatment electrode is correctly positioned and the target is accurately identified prior to applying thermal energy, preventing unintended thermal damage to surrounding structures.
3Measurement precision
If electrical sensors are positioned to detect DRG contact, then measurement accuracy is improved, but probe design complexity increases
Solution Approach 1:
The electrical sensors and treatment electrode are merged into a single integrated probe structure with coordinated positioning. The sensors are placed at specific locations relative to the electrode to detect DRG contact, and this integrated design allows simultaneous localization and treatment functions without requiring separate complex positioning mechanisms.
Solution Approach 2:
The electrical sensors automatically detect DRG alignment and provide real-time feedback on probe positioning. The system self-regulates by using the sensors to monitor contact and adjust or confirm placement without requiring external imaging or complex mechanical positioning systems, thereby improving measurement accuracy while simplifying the overall probe design.
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 enables precise localization and ablation of the DRG, effectively managing chronic back pain by ensuring accurate electrode alignment and controlled power application, thereby improving pain management outcomes.
Implementation Method 1
the electrical characteristic comprises a resistance or an impedance
Implementation Method 2
the electrical characteristic comprises a resistance or an impedance
Implementation Method 3
an electrode disposed on the elongated body between the first and second electrical sensors
Data Source
AI summary
An ablation probe includes an elongated body having a tapered distal end and a proximal end that are aligned along an axis; first and second electrical sensors disposed on the elongated body; and an electrode disposed on the elongated body between the first and second electrical sensors. A power source is electrically coupled to the electrical sensors and to the electrode. A computer has an input electrically coupled to the electrical sensors to receive first and second output signals, respectively, from the electrical sensors. A non-transitory computer-readable memory is operatively coupled to the computer and stores computer-readable instructions that, when executed by the computer, cause the computer to: analyze an electrical characteristic measured by the first and second electrical sensors, and produce an output control signal when the electrical characteristic measured by the first and second electrical sensors indicates that the electrode is aligned with a target anatomical feature.