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Effects of piezoelectric units on pacemaker function: an in vitro study.
Gonzalo Gomez1, Fernando Jara, Baltasar Sánchez
1Department of Endodontics, Universitat Internacional de Catalunya, Barcelona, Spain.
Journal of Endodontics
|September 18, 2013
Summary
This study found no electromagnetic interference (EMI) from ultrasonic devices on pacemakers in vitro. Piezoelectric and magnetostriction units did not affect pacemaker activity, challenging previous concerns.
Area of Science:
- Biomedical Engineering
- Medical Device Safety
Background:
- Clinical use of piezoelectric units in pacemaker patients is discouraged.
- Empirical evidence on the effects of ultrasonic devices on pacemaker function is lacking.
Purpose of the Study:
- To investigate the in vitro electromagnetic interference (EMI) of piezoelectric and magnetostriction units on a Medtronic pacemaker.
- To provide empirical data on the safety of ultrasonic devices in patients with pacemakers.
Main Methods:
- Tested four piezoelectric and two magnetostriction units for EMI with a SENSIA SESR01 pacemaker.
- Simulated human body electrical resistance in a saline bath.
- Analyzed EMI at various distances and operational states of the ultrasonic devices.
Main Results:
- A positive control (direct contact) demonstrated false pacemaker activity.
- No electromagnetic interference (EMI) was detected from any ultrasonic unit under tested conditions.
Conclusions:
- Piezoelectric and magnetostriction units did not produce detectable EMI on the pacemaker in this in vitro model.
- Findings suggest current ultrasonic devices may be safe for use in pacemaker patients, contrary to general discouragement.
