Resistively Heated Electrosurgical Electrode
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Solution Overview
Problem
Existing electrosurgical medical devices face challenges such as high electrical current passage in monopolar devices causing tissue damage and difficulty in controlling active and return electrodes in bipolar devices, leading to inefficiencies and limitations in medical procedures.
Innovation Solution
A single electrosurgical medical device capable of switching between monopolar and bipolar modes, utilizing a hand piece with multiple electrodes where one or more are resistively heated to accelerate electrons and ions, reducing the required voltage and current for therapeutic functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If monopolar medical devices are used to pass electrical current through the patient, then therapeutic functions can be performed, but high electrical currents cause unwanted tissue and organ damage
Solution Approach 1:
The patent divides the single monopolar current path into multiple bipolar current paths between adjacent electrodes. Each electrode pair creates a localized current path that limits the spread of electrical current through the patient's body, thereby reducing tissue damage while maintaining therapeutic effectiveness.
Solution Approach 2:
The patent applies heating elements selectively to specific electrodes or electrode regions to concentrate thermal energy at the treatment site. This localized heating approach delivers therapeutic effects precisely where needed while minimizing exposure of surrounding healthy tissues to harmful thermal and electrical effects.
2Object-affected harmful factors
If bipolar medical devices are used to minimize tissue damage, then therapeutic functions can be performed with lower current, but accurately controlling which electrode is the active electrode is difficult
Solution Approach 1:
The patent incorporates heating elements in specific electrodes or electrode regions to create localized thermal zones. These heated regions serve as identifiable active electrodes, providing visual or tactile feedback to operators about which electrodes are actively delivering therapy, thereby simplifying electrode control and configuration.
Solution Approach 2:
The patent employs temperature-sensitive materials or indicators that change color or appearance in response to heating, allowing operators to easily identify which electrodes are currently active or heated. This visual feedback mechanism simplifies the complex task of electrode control and configuration in bipolar mode.
3Power
If resistively heated electrodes are used to accelerate electrons and ions, then less voltage is required to achieve the same disassociation, but additional heating power supply and control systems are needed
Solution Approach 1:
The patent combines the heating function and therapeutic electrosurgical function into a single integrated device with multiple electrodes that can operate in different modes. The same electrode structure serves both as a heating element and as an electrosurgical electrode, eliminating the need for separate devices and reducing overall system complexity despite the added heating capability.
Solution Approach 2:
The patent designs electrodes that can function in multiple capacities: as resistively heated elements for low-voltage plasma generation, as traditional electrosurgical electrodes for cutting and coagulation, and as temperature indicators. This multi-functionality allows the device to achieve various therapeutic goals with a single versatile platform, offsetting the initial complexity increase.
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
Enables efficient and controlled electrosurgical procedures with reduced power and voltage usage, allowing for versatile arrangements and modes without disrupting medical procedures, enhancing precision and safety.
Implementation Method 1
one or more of the electrodes are resistively heated to allow for thermionic disassociation of the electrons, ions, or both
Implementation Method 2
resistively heated to allow for thermionic disassociation of the electrons, ions, or both so that electrons, ions, or both in a field are accelerated
Data Source
AI summary
A medical device is provided that includes a hand piece, a heating power supply, and a therapy power supply. The hand piece includes a first electrode including a heater. The heating power supply selectively provides heating power to the heater. The therapy power supply selectively provides therapeutic power to the first electrode. The medical device is changeable between operating a first electrosurgical configuration and a second electrosurgical configuration. In the first electrosurgical configuration, the heating power supply provides the heating power to the heater to heat the first electrode and the therapy power supply provides the therapeutic power to the first electrode.