Electrosurgical Device Monopolar Electrode Assembly Segmentation
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Solution Overview
Problem
Existing electrosurgical devices require switching between different devices for various surgical functions, leading to longer procedure times, increased costs, and potential inaccuracies due to the obstruction and limitations of deactivated electrodes during monopolar operations.
Innovation Solution
An electrosurgical device with a handpiece and electrode assembly featuring a monopolar blade and a monopolar electrode, where the monopolar blade is partially coated with an insulator to focus energy for cutting and coagulation, and the monopolar electrode is used for hemostatic sealing with a dispersed fluid, allowing for multiple functions without the need to change devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single electrosurgical device with multiple electrodes is used to perform multiple functions, then device versatility and surgical efficiency are improved, but the deactivated electrode may obstruct the surgeon's view and prevent access to smaller tissue areas
Solution Approach 1:
The electrode assembly is segmented into multiple independently controllable electrodes (first electrode, second electrode, third electrode) with different functions (cutting, coagulation, sealing). The controller can selectively activate or deactivate specific electrodes based on surgical needs, allowing the surgeon to use only the necessary electrode for each task, thereby eliminating obstruction from deactivated electrodes while maintaining device versatility.
Solution Approach 2:
The device incorporates dynamic control capabilities where the controller can selectively enable or disable specific electrodes during the procedure. This dynamic switching allows the electrode configuration to adapt in real-time to surgical requirements, ensuring that only active electrodes are present in the surgical field, thus avoiding view obstruction and improving access to small tissue areas.
2Reliability
If different electrosurgical devices are used for different functions (cutting, coagulation, sealing), then each function can be performed with optimized parameters, but procedure time increases and response time to unexpected issues lengthens
Solution Approach 1:
The electrosurgical device integrates multiple electrodes with different functions (cutting electrode, coagulation electrode, sealing electrode) into a single handpiece. All electrodes are controlled by a unified controller that can selectively activate the appropriate electrode based on surgical needs, eliminating the need to switch between separate devices and reducing procedure time while maintaining function-specific optimization.
Solution Approach 2:
The patent combines multiple electrosurgical functions (cutting, coagulation, sealing) into a single device with multiple electrodes that can be selectively activated. This merging of functions into one instrument eliminates the time required to switch between separate devices and allows immediate response to changing surgical requirements while preserving the optimized performance of each function.
3Manufacturing precision
If a monopolar blade is used for cutting and coagulation, then precise tissue dissection is achieved, but thermal damage to surrounding tissue may occur
Solution Approach 1:
The device segments the electrosurgical functions into separate electrodes: a monopolar blade for precise cutting and coagulation, and a separate bipolar electrode for sealing. This segmentation allows the monopolar blade to focus its energy for precise dissection while the bipolar electrode handles sealing tasks, distributing thermal load and reducing cumulative thermal damage to surrounding tissue.
Solution Approach 2:
The bipolar electrode acts as an intermediary for tissue sealing functions, taking over tasks that would otherwise require the monopolar blade. By using the bipolar electrode for sealing, the monopolar blade's thermal exposure is reduced, minimizing thermal damage to surrounding tissue while maintaining precise cutting capability when needed.
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 precise dissection and coagulation with reduced power and thermal damage while performing hemostatic sealing, eliminating the need for device switching and improving surgical efficiency and accuracy.
Implementation Method 1
Tissue that contacts the plasma experiences a rapid vaporization of cellular fluid to produce a cutting effect
Implementation Method 2
Electrosurgical devices pass electrical energy through tissue between the electrodes to provide coagulation to control bleeding
Implementation Method 3
The monopolar blade is partially coated with an insulator to focus energy for cutting and coagulation
Implementation Method 4
The monopolar electrode is used for hemostatic sealing with a dispersed fluid
Data Source
AI summary
An electrosurgical device having a handpiece including a controller and an electrode assembly extending from the handpiece is disclosed. The electrode assembly includes a monopolar blade and a monopolar electrode. The monopolar blade includes a conductive element partially coated with an insulator and electrically coupled to the controller to selectively deliver a monopolar radiofrequency (RF) cutting signal. The monopolar electrode is spaced apart and electrically isolated from the monopolar blade. The monopolar electrode includes an exposed major conductive surface electrically coupled to the controller to selectively deliver a monopolar RF hemostatic sealing signal with a dispersed fluid.