Merlin@home Transmitter
Medical device recall Z-0551-2025. Published in FDA’s Enforcement Report on Dec 4, 2024.
No Watch here, and no alerts: openFDA asks that its enforcement data “should not be used as a method to collect data to issue alerts to the public, nor should it be used to track the lifecycle of a recall” (openFDA). For FDA’s own recall emails, subscribe at FDA. FDA’s own record is on accessdata.fda.gov.
The short answer
Published in FDA’s Enforcement Report on Dec 4, 2024. Copied from openFDA on Oct 20, 2026.
- Class III FDA’s class
- Ongoing its status, in FDA’s file
- Nationwide FDA’s word, and 29 states named
- 130 transmitters how much, in FDA’s words
Every line below is in FDA’s own words, with its source beside it. FDA’s terms are explained in FDA’s own words.
How serious is it, by FDA’s class?
Class III, the least serious of FDA’s three classes.
“Products that are unlikely to cause any adverse health reaction, but that violate FDA labeling or manufacturing laws. Examples include: a minor container defect and lack of English labeling in a retail food.”
openFDA, in plain words, its enforcement report fields.
“Class III is a situation in which use of, or exposure to, a violative product is not likely to cause adverse health consequences.”
FDA’s rule, 21 CFR 7.3(m)(3), eCFR.
What these words mean is quoted from openFDA’s field reference and 21 CFR 7.3.
What’s wrong with it?
Due to heart transmitter not being able to upgrade to the current software version in the field after experiencing a power interruption during a prior over-the-wire software download.
FDA, Device recall enforcement reports. Released Oct 14, 2026. Updated weekly.
Which ones are recalled?
Merlin@home Transmitter REF EX1100 The Merlin@home” (M@h) transmitter is intended to transfer stored data from the patient s implanted heart device to Merlin.net” Patient Care Network (PCN) to facilitate remote monitoring by using inductive (EX1100 Model) or RF telemetry (EX1150 Model) to read device data and transmitting to the Merlin.net PCN server.
130 transmitters, in FDA’s words.
FDA, Device recall enforcement reports. Released Oct 14, 2026. Updated weekly.
Codes to check against yours
Model Number: EX1100 UDI-DI code: Pending Serial Numbers: 12600224 12600307 12600895 12600974 12601074 12601156 12601169 12602176 12602216 12602464 12602491 12604265 12604852 12606254 12606332 12606531 12606550 12606551 12606587 12606785…
Every code shown here, 1,227 characters
Model Number: EX1100 UDI-DI code: Pending Serial Numbers: 12600224 12600307 12600895 12600974 12601074 12601156 12601169 12602176 12602216 12602464 12602491 12604265 12604852 12606254 12606332 12606531 12606550 12606551 12606587 12606785 12606814 12607289 12607557 12608093 12608346 12608623 12608678 12608758 12608819 12609094 12609148 12609819 12609919 12610472 12610550 12611493 12611733 12611975 12612409 12612417 12612541 12612929 12613146 12613636 12617342 12617350 12617583 12617821 12618054 12618130 12618726 12618782 12619218 12619405 12619515 12619825 12619827 12620745 12621171 12622233 12622283 12622473 12623904 12625575 12625701 12625874 12628403 12628624 12628626 12634096 12634120 12634141 12634152 12634208 12635184 12635287 12636062 12636067 12636127 12636195 12638900 12639020 12640950 12641103 12641819 12643036 12643543 12643551 12643589 12643621 12643623 12643640 12643744 12643781 12643792 12647278 12647327 12647343 12647350 12647621 12647781 12647787 12647789 12647904 12647923 12647939 12647940 12648513 12648520 12648589 12648611 12648704 12648839 12649443 12649481 12649517 12650938 12651018 12651022 12651051 12651056 12651073 12651198 12651419 12651476 12651597 12652036 12652060 12652070 12652076
Copied exactly as FDA lists them: lot and serial numbers, dates and other codes on the product or its label.
Where did it go?
FDA’s words for the “general area of initial distribution”: where the firm first shipped it.
Worldwide - U.S. Nationwide distribution in the states of ALABAMA, ALASKA, ARKANSAS, CALIFORNIA, COLORADO, CONNECTICUT, DISTRICT OF COLUMBIA, FLORIDA, GEORGIA, ILLINOIS, INDIANA, KENTUCKY, MICHIGAN, MISSISSIPPI, MISSOURI, MONTANA, NEBRASKA, NEW JERSEY, NEW YORK, NORTH CAROLINA, OHIO, OREGON, PENNSYLVANIA, SOUTH CAROLINA, TENNESSEE, TEXAS, VIRGINIA, WASHINGTON and WISCONSIN. The country of Australia.
The states and territories these words name
29 states and territories.
Every one of them
- Alaska
- Alabama
- Arkansas
- California
- Colorado
- Connecticut
- District of Columbia
- Florida
- Georgia
- Illinois
- Indiana
- Kentucky
- Michigan
- Missouri
- Mississippi
- Montana
- North Carolina
- Nebraska
- New Jersey
- New York
- Ohio
- Oregon
- Pennsylvania
- South Carolina
- Tennessee
- Texas
- Virginia
- Washington
- Wisconsin
What FDA means by nationwide
“The term “nationwide” is defined to mean the fifty states or a significant portion. Note that subsequent distribution by the consignees to other parties may not be included.”
openFDA, its enforcement report fields.
The words say it went outside the United States too.
What these words mean is quoted from openFDA’s field reference and 21 CFR 7.3.
Is it still going on?
Ongoing, in FDA’s file.
“A recall which is currently in progress.”
openFDA, on “On-Going”, its enforcement report fields.
What these words mean is quoted from openFDA’s field reference and 21 CFR 7.3.
- The firm began the recall on Oct 1, 2024.
- FDA classified it on Nov 26, 2024.
- FDA’s Enforcement Report published it on Dec 4, 2024.
FDA, Device recall enforcement reports. Released Oct 14, 2026. Updated weekly.
Who is recalling it?
- Abbott Medical, of Sylmar, CA.
- Who began it, in FDA’s words: Voluntary: Firm initiated.
- How the firm first told its customers: Visit.
FDA, Device recall enforcement reports. Released Oct 14, 2026. Updated weekly.
What this record can’t tell you
- Whether your own one is affected: compare the codes, dates and numbers above with yours. When unsure, ask the firm or the store.
- Where it went after the firm’s first shipments. FDA’s words cover the firm’s initial distribution, and, in FDA’s words, “subsequent distribution by the consignees to other parties may not be included.”
- How many have been returned, corrected or destroyed: FDA’s report doesn’t say.
- Whether anyone was hurt or fell ill: the report doesn’t say.
- How current it is: openFDA publishes FDA’s Enforcement Report weekly, after FDA does, and a firm can announce a recall weeks before it appears there. openFDA’s own caution: “This data should not be used as a method to collect data to issue alerts to the public, nor should it be used to track the lifecycle of a recall.”
- A product with no recall here isn’t safe by that: FDA’s report lists the recalls FDA classified, and when.
Hearth Record wrote these lines; the quotations are FDA’s.
Sources
-
U.S. Food and Drug Administration, Device recall enforcement reports.
Released Oct 14, 2026 and checked Oct 20, 2026. Updated weekly. Public domain (CC0 1.0, openFDA). FDA asks that nothing suggest it endorses this site.
Recalls of food, medicines, medical devices, pet food and animal drugs are from the U.S. Food and Drug Administration (FDA). FDA does not endorse Hearth Record. openFDA: “Do not rely on openFDA to make decisions regarding medical care.” Copied on Oct 20, 2026.