Electrosurgical HF Generator Locking Mechanism for Parameter Safety
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Solution Overview
Problem
Existing electrosurgical HF apparatuses lack automatic control and adjustment of process parameters, leading to potential unsatisfactory results or tissue damage due to incorrect settings, especially when used for various tissue types and applications.
Innovation Solution
An electrosurgical HF apparatus with an electronic control unit that locks the HF generator until the user selects and activates a specific application, ensuring correct parameter settings by automatically switching between locked and unlocked states based on user input, preventing activation with incorrect settings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual locking and releasing of the instrument is performed by the user, then the instrument can be controlled for activation, but the generator setting is not considered and wrong settings may lead to unsatisfactory results or tissue damage
Solution Approach 1:
The system provides automatic feedback to the user by displaying the currently active application and process parameters on a display device. The control unit continuously monitors the generator settings and compares them with the selected application requirements, ensuring that the settings are appropriate before allowing activation. This feedback mechanism prevents wrong settings without interfering with manual control.
Solution Approach 2:
The system requires the user to pre-select an application from a predefined list of surgical applications before activation is permitted. The control unit automatically configures the generator settings based on the selected application before the user initiates activation. This preliminary configuration ensures that correct settings are established in advance, preventing activation with inappropriate parameters.
2Productivity
If the HF generator is always unlocked and available for activation, then the instrument can be activated quickly, but wrong settings may be activated without warning
Solution Approach 1:
The system maintains a ready state where the generator is pre-configured with default safe settings and the selected application parameters are prepared in advance. When the user activates the instrument, the control unit immediately applies the pre-configured settings without requiring additional configuration steps, enabling quick activation while ensuring correctness through prior preparation.
Solution Approach 2:
The display device continuously shows the active application and current settings to the user, providing constant feedback about the configuration state. This allows the user to verify settings quickly before activation, maintaining fast operation while preventing harmful activation with wrong settings through visible confirmation.
3Adaptability or versatility
If multiple process parameters are adjustable for different applications, then the apparatus can be adapted to various tissue types and applications, but the complexity of ensuring correct settings increases
Solution Approach 1:
The control unit provides a universal interface that handles multiple different surgical applications through a single standardized selection mechanism. The system maintains a database of predefined application profiles, each containing optimized parameters for specific tissue types and surgical procedures. The user selects from this universal list, and the control unit automatically configures all necessary parameters, simplifying the interface while maintaining versatility across multiple applications.
Solution Approach 2:
The system automatically changes multiple process parameters simultaneously based on the selected application. When the user selects an application from the list, the control unit retrieves the corresponding parameter set and adjusts voltage, current, frequency, and duration parameters automatically. This automated parameter management reduces the complexity of controlling multiple parameters while maintaining adaptability to different surgical requirements.
Data Source
AI summary
A method of controlling an electrosurgical HF apparatus, as well as an HF apparatus, includes an electrosurgical instrument and an HF generator for generating an HF current. The HF generator is in a locked state in which its activation is not possible. An application to be carried out is to be selected prior to a user-side activation of the HF generator, whereby the HF generator is unlocked.