Single-Sided Low Profile Bipolar Pencil Electrode Assembly
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electrosurgical instruments require external adjustments for power and mode settings, which can divert the surgeon's attention from the operating site and necessitate additional personnel for control, complicating the handling and safety of electrosurgical procedures.
Innovation Solution
An electrode assembly for an electrosurgical pencil featuring an insulative core with a supported active wire, a ground electrode, and hypotubes that electrically isolate the active wire from the ground electrode, allowing for tensioning and encapsulation to prevent arcing, enabling intuitive control of electrosurgical modes and power settings directly at the surgical site.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If external adjustments for power and mode settings are used, then the electrosurgical generator can provide various surgical modes and power settings, but the surgeon's attention is diverted from the operating site and additional personnel are required for control
Solution Approach 1:
The patent combines the electrosurgical generator controls directly into the electrosurgical pencil handpiece, merging the functions of power delivery and mode selection into a single integrated device. This allows the surgeon to control all electrosurgical parameters directly at the surgical site without needing to attend to a separate generator or require additional personnel.
Solution Approach 2:
The electrosurgical pencil is designed to be self-contained with integrated controls that allow the surgeon to independently adjust power settings and select surgical modes directly at the patient's side. The device serves itself by incorporating all necessary control functions within the handpiece, eliminating the need for external generator control.
2Productivity
If bipolar electrodes are used for electrosurgical procedures, then tissue cutting and coagulation can be achieved, but electrical arcing between active and ground electrodes may occur compromising safety
Solution Approach 1:
The patent introduces an insulative material positioned between the active wire and ground electrode that acts as an intermediary barrier to prevent direct electrical contact. This insulator allows the bipolar electrodes to function for tissue cutting and coagulation while simultaneously preventing harmful electrical arcing, thus maintaining both productivity and safety.
Solution Approach 2:
The insulative material is nested within the electrosurgical pencil structure, surrounding the active wire and positioning it in relation to the ground electrode. This nested configuration ensures that the insulator is always in place to prevent arcing while allowing the bipolar electrodes to maintain their functional relationship for electrosurgical procedures.
3Reliability
If complex insulative structures are used to prevent arcing, then electrical safety is improved, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent employs a thin film or sheet-like insulative material that can be easily positioned between the active wire and ground electrode. This thin film approach provides effective electrical isolation to prevent arcing while being simple to manufacture and assemble, avoiding the complexity of bulky insulative structures.
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 configuration allows for safe and efficient control of electrosurgical modes and power settings without diverting the surgeon's attention, enhancing the ergonomic and reliable operation of electrosurgical instruments by isolating electrical components to prevent arcing and improve visibility during procedures.
Implementation Method 1
An insulative material is disposed between the active pin and the ground electrode and is configured to at least partially encapsulate and electrically isolate the active pin from the ground electrode along a partial length thereof. A first hypotube is disposed atop the insulative core and extends along a length thereof between the ground electrode and the insulative core, the first hypotube encapsulating the active wire to insulate the active wire from the ground electrode along a length thereof.
Data Source
AI summary
An electrode assembly for an electrosurgical pencil includes an insulative core configured to support an active wire around a peripheral surface thereof, the active wire electrically couples to an active pin that inserts into a distal end of the pencil. A ground electrode is operably coupled about the insulative core and inserts within the distal end of the electrosurgical pencil. An insulative material is disposed between the active pin and the ground electrode and is configured to at least partially encapsulate and electrically isolate the active pin from the ground electrode. A first hypotube is disposed atop the insulative core and extends along between the ground electrode and the insulative core, the first hypotube encapsulates the active wire to insulate the active wire from the ground electrode. A second hypotube is operably engaged to a proximal end of the insulative material and is configured to encapsulate the active pin.