Class I U.S. Food and Drug Administration

Boston Scientific Pacemaker, Implantable Pulse Generator recall: Updated software, Brady software maintenance release 6 (SMR6)

Recall published 6 months ago

Updated 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

The hazard: Device safety concern

A device recall was filed for this product. For anything implanted or relied on daily, the clinician comes before the paperwork.

What the notice says: Updated 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

Why it matters: The FDA recorded an enforcement action against this device. Most device recalls are corrections rather than removals, so the device often stays in use while the manufacturer issues a fix.

Recall details

Recall number
Z-1770-2026
Published
May 6, 2026
Risk level
Class I
Status
Ongoing
Issued by
U.S. Food and Drug Administration
Brand
Boston Scientific Corporation
Product type
Medical devices
Units affected
718,456 units
Made in
United States
Lot / code info
The 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.

Products covered by this recall

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, 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.

Check your product

The notice names 21 codes you can read straight off the package. Type the one printed on yours and the list below narrows to it.

Model or item number

On the rating label, the box or the instruction sheet.

  • L100
  • L101
  • L110
  • L111
  • L121
  • L131
  • L200
  • L201
  • L209
  • L210
  • L211
  • L221
  • L231
  • L300
  • L301
  • L310
  • L311
  • L321
  • L331
  • S701

Serial number

On the rating plate, often next to the date of manufacture.

  • ized DR-EL pacemakers

Codes are lifted verbatim from the FDA — Device enforcement notice. A code that is missing here may still be covered — the official notice is the complete list.

What to do about Device

Boston Scientific Corporation — A device recall was filed for this product. For anything implanted or relied on daily, the clinician comes before the paperwork.

  1. Match the model, catalogue, lot and serial numbers on your device against the identifiers on this page.
  2. If the device is implanted or you depend on it daily, speak to your clinician before changing how you use it.
  3. Ask the supplier or clinic that provided it what the remedy is in your case.
  4. If you are a facility, quarantine affected stock and log the correction.

Claiming on a recalled device

Device recalls are tracked by serial and lot number, so your claim moves faster if you lead with those.

  • Have the model, catalogue, lot and serial numbers ready before you call — they are on the device label or its box.
  • Ask explicitly whether your unit is in the affected range; many recalls cover only part of a model line.
  • If you need the device daily, ask what interim arrangement they offer while the remedy is carried out.
  • Log the date, the name and the reference number of every call. Device recalls can run for months.

Company contact: Boston Scientific Corporation — 4100 Hamline Ave N, Saint Paul, MN, 55112-5700

The official notice

This page summarises a notice published by U.S. Food and Drug Administration. The agency notice is the authoritative version — read it before you act, and treat it as the final word if anything here looks different.

Open the FDA — Device enforcement record U.S. Food and Drug Administration recalls

Questions people ask about this recall

Why was Boston Scientific Corporation medical devices recalled?

Updated 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…

How do I know if I have the recalled product?

Match the codes printed on your package against the notice: model number L100, L101, L110. If the code on your package is not on that list, your unit is outside the recall.

What should I do with it right now?

Match the model, catalogue, lot and serial numbers on your device against the identifiers on this page.

Can I get my money back?

Have the model, catalogue, lot and serial numbers ready before you call — they are on the device label or its box.

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