Electrocautery Electrode Array for Tissue Sealing and Arc Prevention
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current electrosurgical instruments face challenges with small electrode sizes, leading to inadequate tissue sealing and increased risk of bleeding due to partial electrode coverage, electrical arcing, and inefficient energy transfer, particularly in minimally invasive procedures where limited access complicates hemostasis.
Innovation Solution
An electrocautery system with a mechanism for determining tissue coverage and preventing arcing, featuring a power supply and electrode structure with user-selectable operation, including digital data processing and tissue-penetrating elements, to enable larger electrode surfaces and precise power delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If small electrode structures are used to improve the likelihood of complete tissue coverage, then the risk of partial coverage is reduced, but the number of sealing and division operations increases, leading to increased procedure time and anesthetic exposure
Solution Approach 1:
The electrode structure is divided into multiple separate electrodes arranged in a row or array. Each electrode can be independently controlled to fire sequentially or in patterns, allowing the system to treat long tissue sheets in segments rather than requiring a single large electrode. This segmentation enables complete coverage of extensive tissue while avoiding the need for repeated repositioning operations.
Solution Approach 2:
The system determines the total length of tissue to be sealed before beginning the sealing process. Based on this predetermined information, the control system calculates and executes an optimal firing sequence for multiple electrodes that ensures complete coverage in a single pass. This preliminary planning eliminates the need for repeated sealing operations.
2Object-affected harmful factors
If mechanical standoff is used to prevent arcing between adjacent electrodes, then electrical safety is improved, but very thin tissue cannot make contact with opposing electrodes, preventing optimal electrical seal
Solution Approach 1:
The electrode structure incorporates flexible or movable components that can dynamically adjust the spacing between opposing electrodes. The system can transition from a larger standoff distance (to prevent arcing) to a smaller spacing (to enable thin tissue contact) based on real-time tissue thickness detection and procedural requirements.
Solution Approach 2:
The system changes the operational parameters of the electrode structure, specifically the spacing between electrodes, based on the detected tissue characteristics. For thin tissue, the electrodes are positioned closer together to ensure contact; for thicker tissue or when arcing risk is present, the spacing is increased to prevent electrical arcing.
3Reliability
If shallow mechanical standoff is used to allow thin tissue contact, then optimal electrical seal is achieved, but electrical arcing between electrodes occurs
Solution Approach 1:
The system incorporates sensors that provide real-time feedback on tissue presence and thickness between electrodes. This feedback loop allows the control system to dynamically adjust electrode activation patterns and spacing to prevent arcing while maintaining adequate contact for effective sealing. The system monitors for conditions that would cause arcing and modifies operation accordingly.
4Reliability
If multiple sequential electrode firing is used to treat long tissue sheets, then complete coverage is achieved, but thermal accumulation and cross-talk between adjacent electrodes increase
Solution Approach 1:
Instead of continuous or rapid sequential firing, the system uses periodic or pulsed electrode activation with controlled intervals. Electrodes are fired in a staggered sequence with sufficient time between activations to allow thermal dissipation. This periodic action pattern prevents thermal accumulation while ensuring complete coverage of the tissue sheet.
Solution Approach 2:
The system applies energy to individual electrodes or electrode groups in a controlled manner, using partial action (not all electrodes simultaneously) to prevent excessive thermal buildup. The firing pattern is designed to treat the entire tissue length while limiting the number of active electrodes at any given moment, thereby controlling thermal accumulation.
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
The system allows for safer and more efficient tissue sealing and division by ensuring adequate electrode coverage, reducing the risk of arcing and hemorrhage, and improving the accuracy of power transfer during surgical procedures.
Implementation Method 1
A number of known systems apply radio frequency (RF) energy to necrose bodily tissue
Implementation Method 2
If electrocautery electrodes generate an arc between them, instead of passing RF energy through targeted tissue
Data Source
AI summary
An electrode structure and a mechanism for automated or user-selected operation or compensation of the electrodes, for example to determine tissue coverage and/or prevent arcing between bottom electrodes during electrocautery is disclosed.