Electrosurgical Electrode Segmentation for Clean Tissue Cuts
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electrosurgical instruments face challenges in achieving clean and accurate cuts while also performing sealing procedures, as the energy profiles required for cutting and sealing differ, leading to issues with jagged cuts and inefficiency.
Innovation Solution
An electrosurgical system with a configuration of electrodes on opposing jaws, allowing for dynamic control of electric potential differences between electrodes to switch between sealing and cutting modes, using different electrode pairs and altering the return electrode during cutting to reduce energy consumption and improve precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a bipolar electrosurgical instrument uses the same electrode configuration for both sealing and cutting, then the device complexity is reduced, but the manufacturing precision and cut quality deteriorate due to jagged cuts and inability to optimize energy profiles
Solution Approach 1:
The electrosurgical instrument divides the electrode system into multiple independent electrodes (first electrode, second electrode, third electrode) that can be selectively paired and activated. This segmentation allows different electrode pairs to be used for different functions (sealing vs. cutting), enabling optimized energy delivery for each function while maintaining a single integrated device structure.
Solution Approach 2:
The system dynamically switches between different operational states by controlling which electrodes are active and which are at neutral potential. The controller can transition between first operational state (first electrode active, third electrode return) and second operational state (second electrode active, first electrode return), allowing the same physical device to adapt its electrical characteristics for different surgical needs.
2Ease of operation
If the electrosurgical instrument uses fixed electrode pairs for sealing and cutting, then the ease of operation is improved, but the adaptability deteriorates because the energy profiles cannot be optimized for different tissue types and procedures
Solution Approach 1:
The electrosurgical instrument is designed with multiple electrodes that can serve multiple functions through different pairings. The same set of electrodes can be configured for sealing operations, cutting operations, or potentially other procedures, making the device universally applicable to various surgical needs without requiring separate specialized instruments for each function.
Solution Approach 2:
The system changes operational parameters by altering which electrodes are active and their respective potentials. The controller modifies the electrical configuration by switching between different operational states, thereby changing the energy delivery characteristics to match the specific surgical requirement while maintaining a consistent user interface.
3Reliability
If the instrument uses traditional bipolar electrode pairing, then the reliability of energy return is improved, but the use of energy increases during cutting operations due to higher energy consumption and inability to reduce energy usage
Solution Approach 1:
The system can alternately activate different electrode pairs during cutting operations. By periodically switching between different active electrode configurations, the instrument can maintain reliable energy return paths while distributing the energy delivery burden, potentially reducing overall energy consumption and improving cut quality through varied energy profiles.
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 robust, accurate, and efficient cutting and sealing operations by optimizing energy delivery, reducing jagged cuts and energy usage, and promoting clean, complete tissue cuts without fragments.
Implementation Method 1
electrical energy from an ESU that is converted to thermal energy when the gripping end effector grip a section of tissue
Implementation Method 2
electrical energy is supplied to the first electrode and returned from the third electrode
Data Source
AI summary
An electrosurgical instrument may comprise electrodes provided on the working surfaces of each jaw member that can be set to different electrical potentials and/or polarities to perform electrosurgical operations, such as sealing and cutting. Different combinations of electrodes can be selectively activated to create different pathways for the transfer of electrical energy through the material, to achieve the desired effects.