Electrosurgical Touchscreen Power Isolation Against Plasma EMI
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Electromagnetic interference (EMI) noise during plasma delivery in gas-enhanced electrosurgical generators corrupts the operation of projected capacitive touch screens, leading to malfunction.
Innovation Solution
Incorporating a PCB power relay to disable and restore touch sensors during plasma delivery, using a FPGA controller to manage EMI noise interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If plasma delivery is activated in gas-enhanced electrosurgical generator, then electrosurgical treatment function is improved, but electromagnetic interference noise corrupts touchscreen operation
Solution Approach 1:
The patent extracts the touchscreen display system from the electrosurgical generator during plasma delivery operations. When plasma delivery is activated, the touchscreen is completely powered down and disconnected from the system, removing it from the electromagnetic environment that causes interference. This allows the electrosurgical treatment to proceed without touchscreen corruption while maintaining user interface functionality before and after the procedure.
Solution Approach 2:
The system performs preliminary actions by detecting when plasma delivery is about to start and proactively powering down the touchscreen display before the electromagnetic interference begins. The controller monitors the operational state and preemptively disables the touchscreen, preventing the harmful EMI from affecting the display before corruption can occur.
2Ease of operation
If touchscreen display is continuously powered during plasma delivery, then user interface accessibility is improved, but electromagnetic interference corrupts touch sensor operation
Solution Approach 1:
The touchscreen display system is extracted or removed from active operation during plasma delivery. The controller completely powers down the touchscreen by disconnecting power to the display module, eliminating its presence in the electromagnetic field. This ensures reliable electrosurgical operation while the user interface remains accessible before and after the procedure through the same touchscreen.
Solution Approach 2:
The system applies preliminary anti-action by detecting the onset of plasma delivery and immediately counteracting the potential EMI effect by powering down the touchscreen. This preemptive measure prevents the electromagnetic interference from corrupting touch sensor operation, maintaining reliability of both the electrosurgical function and user interface.
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
Prevents corruption of touch sensors by EMI noise, ensuring stable operation of the electrosurgical generator's touchscreen during plasma delivery.
Implementation Method 1
Electromagnetic interference (EMI) noise during plasma delivery in gas-enhanced electrosurgical generators corrupts the operation of projected capacitive touch screens
Implementation Method 2
supplying an ionizable gas such as argon past the active electrode to target tissue and conducting electrical energy to the target tissue in ionized pathways as non-arcing diffuse current
Implementation Method 3
conducting electrical energy to the target tissue in ionized pathways
Data Source
AI summary
A system and method for operating a touchscreen of a gas-enhanced electrosurgical generator. The generator has a display module and a primary controller. The display module has a plurality of touch sensors, a PCB power relay and a CPU. The method comprises selecting electrosurgery settings through a graphical user interface, activating through an input device plasma delivery from the gas-enhanced electrosurgical generator, disabling the plurality of touch sensors through software running on the primary controller, disconnecting power from the plurality of touch sensors with the PCB power relay in response to the disabling of the plurality of touch sensors, applying power to an electrode in the plasma accessory connected to the gas-enhanced electrosurgical generator, and de-activating through an input device plasma delivery from the gas-enhanced electrosurgical generator to the plasma accessory connected to the gas-enhanced electrosurgical generator.