Electrosurgical Power Allocation for Simultaneous Probe Heating
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Solution Overview
Problem
Pain management generators with limited maximum power output struggle to deliver sufficient energy to all probes simultaneously, leading to prolonged procedure times and inefficient temperature maintenance in electrosurgical procedures.
Innovation Solution
A control system that allocates power proportionally across channels based on temperature errors and maximum output, ensuring all probes reach a set temperature at approximately the same time by varying instantaneous power and duty cycles, thereby optimizing energy delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a generator with limited maximum power output is used to power multiple probes, then the generator can maintain safe and manageable power levels, but the probes cannot all reach the set temperature simultaneously, leading to prolonged procedure times
Solution Approach 1:
The system dynamically adjusts the power allocation to each probe based on real-time temperature feedback. The control system continuously monitors probe temperatures and modifies power distribution accordingly, allowing probes to reach target temperature simultaneously despite limited total power output. This dynamic adaptation resolves the contradiction between limited power and prolonged procedure time.
Solution Approach 2:
The control system implements a feedback mechanism where temperature sensors on each probe provide real-time temperature data to the control system. Based on this feedback, the system calculates and adjusts the power allocated to each probe, ensuring optimal power distribution that minimizes procedure time while staying within the generator's maximum power output limits.
2Ease of operation
If equal power is allocated to all channels, then power distribution is simple and uniform, but probes with different thermal characteristics or starting temperatures cannot reach the set temperature at the same time
Solution Approach 1:
The control system applies local quality by allocating different power levels to different probes based on their individual needs. Each probe receives a customized power allocation determined by its current temperature, thermal characteristics, and distance from the target temperature, rather than receiving uniform power distribution. This localized power optimization enables all probes to reach the set temperature simultaneously.
Solution Approach 2:
The system changes the power parameter dynamically for each channel based on real-time conditions. The control system continuously monitors temperature and adjusts power allocation parameters, transforming the static equal power distribution into a dynamic, adaptive power distribution that optimizes temperature maintenance efficiency across all probes.
3Productivity
If the generator increases its maximum power output to deliver sufficient energy to all probes simultaneously, then all probes can reach the set temperature at the same time, but the system complexity and cost increase
Solution Approach 1:
The control system acts as an intermediary between the limited power output of the generator and the power requirements of multiple probes. It intelligently distributes the available power across different channels based on real-time temperature feedback, effectively maximizing the utilization of the generator's power output without requiring an increase in maximum power capacity. This intermediary control mechanism achieves simultaneous temperature reach without increasing system complexity.
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
This solution minimizes overall procedure time, ensures consistent temperature maintenance across all probes, and enhances patient outcomes by efficiently managing power distribution in underpowered situations.
Implementation Method 1
delivering energy to tissue through energy delivery devices
Implementation Method 2
each of the at least two probes having a temperature sensor for providing a measured temperature to the control system
Data Source
AI summary
A system and method for use with an electrosurgical system for delivering energy to tissue wherein the system includes a generator having a maximum power, at least two channels, and a plurality of probes. The method includes a control system allocating power proportionally to the plurality of probes whereby the probes reach a predetermined threshold without significant delays.