[A method for worst-case study of coupling between medical equipment]

Area of Science:

• Biomedical Engineering
• Electromagnetics
• Medical Device Safety

Context:

• Increasing use of electronic medical devices in critical care settings like operating theatres and intensive-care units.
• Potential for electromagnetic interference (EMI) between co-located devices, posing risks to patient safety and device function.
• Need for robust assessment of electromagnetic compatibility (EMC) in healthcare environments.

Purpose:

• To perform a numerical near-field worst-case analysis of electromagnetic coupling between electrosurgical coagulators and electrocardiogram (ECG) devices.
• To develop and utilize a specialized human body model that adheres to DIN 33402 part 2 geometrical standards.
• To evaluate the impact of various parameters, including coagulation frequency and electrode placement, on electromagnetic interactions.

Summary:

• A worst-case electromagnetic coupling study was conducted using a validated human body model.
• The model incorporates realistic geometrical dimensions and averaged electrical properties of human tissues.
• Simulations analyzed the near-field interactions between coagulators and ECG devices under varied operational parameters.

Impact:

• Provides critical data for understanding and mitigating electromagnetic immunity problems in clinical settings.
• Informs the design and implementation of medical devices to ensure safe co-existence and reliable performance.
• Contributes to enhanced patient safety by addressing potential interference issues in high-risk medical environments.