{"url_path":"/fda/device/recalls/Z-1770-2026","section_key":"summary","section_title":"DEVICE Recall: Boston Scientific Corporation — Boston Scientific Pacemaker, Implantable Pulse Generator, Pacemaker (non- Cardiac Re-Synchronization Therapy) labeled as:    1. ESSENTIO SR SL, Model Number L100;   2. ESSENTIO DR SL Pacemaker, Model Number L101;   3. ESSENTIO SR SL MRI Pacemaker, Model Number L110;   4. ESSENTIO DR SL MRI Pacemaker, Model Number L111;   5. ESSENTIO DR EL Pacemaker, …","topic":"fda","document":{"doc_type":"device-recall","doc_date":"2026-03-19","source_url":"https://api.fda.gov/device/enforcement.json?search=recall_number:%22Z-1770-2026%22","accession_number":null,"cik":null,"ticker":null,"issuer_name":null,"edgar_url":null,"primary_entity_key":null,"primary_entity_name":"Boston Scientific Corporation"},"word_count":408,"has_tables":false,"body_markdown":"# FDA DEVICE Recall: Z-1770-2026\n\n**Recalling firm:** Boston Scientific Corporation\n**Classification:** Class I\n**Status:** Ongoing\n**Type:** Voluntary: Firm initiated\n**Initiated:** 2026-03-19\n**Report date:** 2026-05-06\n\n## Product\nBoston Scientific Pacemaker, Implantable Pulse Generator, Pacemaker (non- Cardiac Re-Synchronization Therapy) labeled as:    1. ESSENTIO SR SL, Model Number L100;   2. ESSENTIO DR SL Pacemaker, Model Number L101;   3. ESSENTIO SR SL MRI Pacemaker, Model Number L110;   4. ESSENTIO DR SL MRI Pacemaker, Model Number L111;   5. ESSENTIO DR EL Pacemaker, Model Number L121;   6. ESSENTIO DR EL MRI Pacemaker, Model Number L131;   7. PROPONENT SR SL Pacemaker, Model Number L200;   8. PROPONENT DR SL Pacemaker, Model Number L201;   9. PROPONENT DR (VDD) SL Pacemaker, Model Number L209;   10. PROPONENT SR SL Pacemaker, Model Number L210;   11. PROPONENT DR SL MRI Pacemaker, Model Number L211;   12. PROPONENT DR EL Pacemaker, Model Number L221;   13. PROPONENT DR EL MRI Pacemaker, Model Number L231*;   14. ACCOLADE SR SL Pacemaker, Model Number L300;   15. ACCOLADE DR SL Pacemaker, Model Number L301;   16. ACCOLADE SR SL MRI Pacemaker, Model Number L310;   17. ACCOLADE DR SL MRI Pacemaker, Model Number L311;   18. ACCOLADE DR EL Pacemaker, Model Number L321;   19. ACCOLADE DR EL MRI Pacemaker, Model Number L331*;   20. ALTRUA 2 SR SL Pacemaker, Model Number S701;   21. ALTRUA 2 DR SL Pacemaker, Model Number S702;   22. ALTRUA 2 DR EL Pacemaker, Model Number S722.\n\n## Reason\nUpdated software, Brady software maintenance release 6 (SMR6), is now available for the ACCOLADE\" family of pacemakers and cardiac resynchronization therapy pacemakers (CRT-Ps)1 and the advisory population is expanding to include all CRT-P and dual-chamber extended life (DR-EL) devices.    Dual chamber modes are specifically indicated for treatment of the following:    \" Conduction disorders that require restoration of AV synchrony, including varying degrees of AV block    \" VVI intolerance (i.e., pacemaker syndrome) in the presence of persistent sinus rhythm    \" Low cardiac output or congestive heart failure secondary to bradycardia\n\n## Affected lots\nThe advisory population includes all models listed; however, the bounding differs by battery type:   \"  All serialized DR-EL pacemakers and CRT-Ps from the ACCOLADE family are included in the advisory population.   \"  ACCOLADE DR-SL and SR-SLs with a use-by-date (UBD) on or before 30 June 2025 are included in the advisory population. Model number alone will not precisely identify individual DR-SL or SR-SL devices in the advisory population.   To determine if a device is affected, enter a model/serial into the device lookup tool at www.BostonScientific.com/lookup.\n\n## Distribution\nworldwide"}