Electrosurgical Generator User Interface for Tissue Control
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Solution Overview
Problem
Conventional electrosurgical generators lack the ability to precisely control the output to achieve a balanced cutting and hemostasis effect on tissue without causing unwanted charring or collateral damage, as they typically offer limited selection of electrosurgical modes that are more focused on internal power settings rather than specific tissue effects.
Innovation Solution
An electrosurgical generator with a user interface that allows independent adjustment of cutting and hemostasis settings, which are mapped to specific waveform parameters such as duty cycle, crest factor, frequency, pulse width, and power level to achieve a combined cutting and hemostasis effect, enabling more precise control over tissue treatment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional electrosurgical generators use limited pre-set electrosurgical modes, then the device complexity is reduced and ease of operation is improved, but the manufacturing precision of tissue treatment effects deteriorates
Solution Approach 1:
The electrosurgical generator divides the waveform control into separate independent controls for cutting parameters and hemostasis parameters, rather than using a single integrated mode selection. This segmentation allows precise adjustment of each effect independently while maintaining a relatively simple overall device architecture.
Solution Approach 2:
The system dynamically adjusts waveform parameters (duty cycle, crest factor, frequency, pulse width) based on the independently controlled cutting and hemostasis settings. This dynamic adaptation enables precise tissue treatment effects without requiring complex pre-programmed modes, as the waveform is continuously optimized based on real-time parameter combinations.
2Adaptability or versatility
If conventional electrosurgical generators provide multiple pre-set modes, then the adaptability to different tissue effects is improved, but the ease of operation deteriorates due to limited control over specific effects
Solution Approach 1:
The control interface is segmented into separate adjustments for cutting effects and hemostasis effects, allowing users to independently optimize each parameter according to surgical needs. This segmentation provides both versatility in achieving different tissue effects and simplicity in operation, as users directly control the specific effects rather than selecting from pre-defined modes.
Solution Approach 2:
The system provides dynamic control where users can adjust cutting and hemostasis parameters independently in real-time, and the waveform parameters are dynamically adapted to reflect these adjustments. This creates a versatile system that responds directly to user input without requiring complex mode selections.
3Productivity
If electrosurgical generators increase power output for better cutting effect, then the productivity is improved, but the object-affected harmful factors worsen due to tissue charring and collateral damage
Solution Approach 1:
The system changes multiple waveform parameters simultaneously (duty cycle, crest factor, frequency, pulse width) to optimize the cutting effect while controlling harmful thermal effects. By adjusting these parameters in combination rather than simply increasing power output, the system achieves high cutting efficiency while minimizing tissue charring and collateral thermal damage.
Solution Approach 2:
The electrosurgical waveform uses periodic pulsed action with adjustable duty cycles and pulse widths. This periodic delivery of energy allows for efficient cutting while providing thermal relaxation periods that prevent excessive heat accumulation and tissue charring, thereby reducing harmful thermal effects while maintaining productivity.
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 solution allows for real-time adjustment of electrosurgical waveforms to achieve desired tissue effects, minimizing tissue damage and improving surgical precision by enabling independent control of cutting and hemostasis without compromising on competing effects, thus enhancing the efficacy of electrosurgical procedures.
Implementation Method 1
Electrosurgery involves application of high radio frequency electrical current, microwave energy or resistive heating to a surgical site to cut, ablate, coagulate or seal tissue
Implementation Method 2
Energy-based tissue treatment is well known in the art. Various types of energy (e.g., electrical, ultrasonic, microwave, cryogenic, heat, laser, etc.) are applied to tissue to achieve a desired result
Data Source
AI summary
An electrosurgical generator is disclosed. The generator includes an output stage configured to generate a waveform, a first input configured to adjust a cut setting representative of a cutting effect of the waveform, and a second input configured to adjust a hemostasis setting representative of a hemostasis effect of the waveform. The generator also includes a controller configured to receive cut and hemostasis settings and to adjust one of a duty cycle, a crest factor and a power level of the waveform to achieve a combined cutting and hemostasis effect based on the cut and hemostasis settings.