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WATCHMAN FXD Curve Access System Sgl, US, Material Number… recallZ-2434-2025 · Boston Scientific Corporation · initiated Jul 29, 2025

Open, Classified

Is my device affected?

  1. Compare the model, catalog and lot or serial numbers on your device or its packaging with the code information below. A recall usually covers only specific models or lots.
  2. If yours is listed, follow the instructions from Boston Scientific Corporation or your healthcare provider. The company's action is summarized under what the company is doing.
  3. Do not stop using a prescribed or implanted device on your own — talk to your healthcare provider first.

Where to find your model and lot numbers · What recall classes and statuses mean

Why it was recalled

Boston Scientific has identified a higher likelihood of air embolism events when procedures are performed without positive pressure-controlled ventilation. According to published literature and clinical data, in percutaneous procedures requiring transseptal access to the left atrium when conscious or deep sedation is used, patients have an approximately three-times higher risk (U.S. study) of negative left atrium pressure and air ingress. This risk is especially prevalent in patients with pre-existing low left atrial pressure, hypovolemia, and partial upper airway collapse.

FDA root cause category: Under Investigation by firm

What the company is doing

Boston Scientific issued an Important Medical Device Advisory notice to its consignees on 07/29/2025 via FedEx. The notice explained the problem with the device, procedures under which the likelihood of the problem occurs, and risk to the patient. The WATCHMAN Access Systems Instructions for Use (IFUs) and WATCHMAN physician training will be updated to emphasize instructions related to Access System air management. This update will strengthen the information provided to clinicians regarding the potential for air embolism during WATCHMAN procedures performed under conscious or deep sedation and provide potential mitigation strategies. No devices are being removed. Instructions: 1. Review IFU updates related to air embolism as detailed in Appendix 2. These updates will be added to the WATCHMAN Access Systems IFUs and WATCHMAN Physician Training. 2. Forward this letter to any other clinicians in your medical facility who perform WATCHMAN procedures and to any facilities where affected devices have been transferred, including hospitals or sites within your network. If you are a distributor, this notice must be forwarded to your customers to ensure notification of this Medical Device Advisory is carried out to the end-user level. 3. Complete and return the enclosed Acknowledgment Form. If additional assistance is required or more information regarding this communication, customer should contact your local Boston Scientific representative or Sr. Quality Systems Manager at 763-494-1133.

Recall details

Recall number
Z-2434-2025
Status
Open, Classified
Initiated by the company
Jul 29, 2025
Posted by the FDA
Aug 29, 2025
Recalling firm
Boston Scientific Corporation
Quantity
340185 units in total
Product code
DQY
FDA submissions
K212228
Distribution
Worldwide.

Product description

WATCHMAN FXD Curve Access System Sgl, US, Material Number (UPN) M635TU80010; intended to provide vascular and transseptal access for the family of WATCHMAN FLX LAAC Devices with Delivery Systems.

Code information (models, lots, serial numbers)

GTIN 00191506013806, ALL NON-EXPIRED BATCHES

Devices named in this recall

1 device in the FDA device registry whose identifier appears in the recall's code information.

Product lines

Other products in the same recall event

The FDA groups related products into one recall event (event 97363).

Sources and updates

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