Dynamic Heartbeat Frequency for Electro Surgical Generator Modules
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Solution Overview
Problem
Electro surgical generators face challenges in managing communication traffic to ensure timely detection and shutdown in case of component failures, leading to potential tissue damage due to uncontrolled high-frequency energy output, while existing heartbeat systems create high communication load and bus overload.
Innovation Solution
Implementing a method where regular modules in the electro surgical generator adjust their communication repetition frequency based on the device's state, reducing communication load during standby and increasing it during operation to meet failure tolerance times, allowing for efficient monitoring and rapid malfunction detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a frequent heartbeat system is implemented to detect component failures within the failure tolerance time, then the safety level and response time to failures are improved, but the communication traffic and bus load increase significantly
Solution Approach 1:
The heartbeat frequency is made dynamic rather than static. Modules adjust their heartbeat transmission frequency based on the operational state of the electro surgical generator. During standby mode, heartbeats are transmitted at a lower frequency to reduce communication load. During operation mode, the heartbeat frequency increases to ensure timely failure detection within the failure tolerance time. This dynamic adaptation resolves the contradiction by matching communication intensity to actual safety requirements.
Solution Approach 2:
The system changes the parameter of heartbeat transmission frequency based on operational conditions. The communication module monitors the operational state and adjusts the repetition frequency of heartbeat frames accordingly. This parameter change allows the system to maintain high reliability during critical operation periods while reducing communication traffic during non-critical standby periods, effectively resolving the technical contradiction between safety and communication load.
2Speed
If all modules send heartbeat data at high frequency to ensure timely failure detection, then the response time to failures is improved, but the communication system becomes overloaded
Solution Approach 1:
The heartbeat transmission frequency is dynamically adjusted based on operational state. During standby, modules transmit heartbeats at lower frequency, reducing overall communication system load. During operation, the frequency increases to ensure fast failure detection. This dynamic behavior allows the system to achieve high detection speed when needed without permanently overloading the communication infrastructure.
3Loss of time
If the heartbeat frequency is increased to meet failure tolerance time requirements, then the safety response time is improved, but the communication bus becomes overloaded
Solution Approach 1:
The system changes the heartbeat transmission parameter (frequency) based on operational requirements. During operation mode, the frequency is set high enough to detect failures within the calculated failure tolerance time (e.g., 200 ms). During standby mode, the frequency is reduced to minimize communication traffic volume. This conditional parameter adjustment resolves the contradiction between timely failure detection and communication traffic management.
Data Source
AI summary
A method for controlling an electro surgical generator for controlling electro surgical instruments connected to the electro surgical generator, including a plurality of interconnected regular modules, the plurality of interconnected regular modules including at least one socket module for connecting the electro surgical instrument, and at least one first inverter module for generating a feed signal for providing a high frequency energy for at least one electro surgical instrument connected to the socket module, wherein, each regular module communicates at least with another regular module and/or with a communication module, each regular module is sending a communication frame at an individual repetition frequency and the individual repetition frequency is varied depending on a state of the electro surgical generator.