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Electrophysiology
Diagnosis and catheter-based treatment of cardiac arrhythmias.
Reviewed by Christian Espinosa, Founder, Blue Goat CyberLast reviewed May 5, 2026
Definition
Electrophysiology covers catheter ablation (radiofrequency, cryo, and pulsed field), 3D mapping systems, and intracardiac echo for treating atrial fibrillation, ventricular tachycardia, and other arrhythmias. Products include mapping systems, ablation catheters using radiofrequency, cryo or pulsed field energy, and implantable rhythm devices. Pulsed field ablation has grown rapidly since its US approvals in 2023 and 2024. Large randomized trials and long-term outcomes data drive physician adoption. What the regulation says
Electrophysiology devices, including those for catheter ablation and 3D mapping, are subject to premarket review and postmarket surveillance by regulatory bodies like the FDA under 21 CFR Part 807, and must comply with the essential requirements of the EU MDR, particularly Annex I, for CE marking. Manufacturers must demonstrate safety and performance through clinical evidence and adherence to quality system regulations, such as those outlined in 21 CFR Part 820 for the United States, and ISO 13485 internationally.What this means in practice
Pulsed field ablation (PFA) - Medtronic Affera, Boston Scientific Farapulse, J&J Varipulse - is reshaping the AF market with tissue-selective, faster procedures. Mapping systems (CARTO, EnSite, Rhythmia) drive catheter pull-through.Examples
- A MedTech company developing a novel pulsed field ablation system submits extensive clinical trial data to the FDA to demonstrate its safety and efficacy for treating atrial fibrillation, in line with 21 CFR 814 requirements for Premarket Approval.
- During an audit, an electrophysiology device manufacturer must present documented evidence of software validation for its 3D cardiac mapping system, showing adherence to IEC 62304 standards for medical device software life cycle processes.
- A hospital performing an ablation procedure identifies a cybersecurity vulnerability in a networked electrophysiology workstation and reports it to the manufacturer, prompting a field safety corrective action in accordance with postmarket surveillance regulations.
Common pitfalls
- •A common pitfall is failing to adequately validate software used in 3D mapping systems, which can lead to inaccuracies in cardiac reconstruction and treatment planning.
- •Manufacturers sometimes overlook the need for robust cybersecurity controls in networked electrophysiology systems, potentially exposing patient data or device function to unauthorized access.
- •Inadequate risk assessment for novel energy sources, such as pulsed field ablation, can result in unforeseen patient harms or device malfunctions.
- •A mistake is not performing sufficient usability testing on complex electrophysiology equipment, leading to operator error during critical procedures.
Frequently asked questions
Electrophysiology ablation catheters are generally classified as Class II or Class III medical devices by the FDA, depending on their intended use and risk profile, requiring either 510(k) clearance or PMA approval respectively. In the EU, they typically fall under higher risk classifications (Class IIb or III) due to their invasive nature and potential impact on patient health.
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Sources
4 sourcesSources support the definition or relevant regulatory context, not necessarily every claim on this page. Each is graded against our source-tier hierarchy so you can see what rests on binding law versus commentary.
Tier 2Regulator guidance and consensus· 1Tier 4Trade press and expert commentary· 3
Link health: 4 verified· last checked 2026-06-20· added official documents checked 2026-11-01
HRS·1MedTech Dive·1AdvaMed·1U.S. Food and Drug Administration (FDA)·1
- 1Heart Rhythm SocietyTier 4 VerifiedHRShrsonline.org
- 2MedTech DiveTier 4 VerifiedMedTech Divemedtechdive.com
- 3AdvaMed - Industry ReportsTier 4 VerifiedAdvaMedadvamed.org
- 4Cardiac electrophysiology devicesTier 2 VerifiedU.S. Food and Drug Administration (FDA)fda.gov
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