Abstract

Overview

Emerging concerns about electromagnetic interference (EMI) from smartphones on active implantable medical devices (AIMD) are highlighted, which can undermine patient safety by causing device malfunctions.

Methodology

The study utilized a precision 3D magnetic field mapping setup with a spatial resolution of 1 mm. This used a three-axis Hall probe and teslameter managed by a robotic system (COSI Measure).

Key Findings

• Detailed examinations of iPhone 13 Pro, iPhone 12, and MagSafe charger identified multiple sources of magnetic fields that could potentially interfere with AIMDs.
• Measurement showed areas such as annular array of magnets, wide-angle cameras, and speakers producing magnetic fields exceeding safe limits (1 mT) as per ISO 14117:2019.
• Data-driven safety recommendations suggest maintaining a minimum distance of 25 mm between iPhone 13 Pro and any AIMD to prevent adverse EMI interactions.

Conclusion

This study assists in the establishment of data-driven safety guidelines to mitigate risks associated with device-device interactions between smartphones and AIMDs. A call to action for vendors to disclose magnetic field information of their products is made to ensure comprehensive risk assessments.