ClearanceBrief
Recall Z-2429-2025 ยท DQY Catheter, Percutaneous

Boston Scientific Corporation

WATCHMAN FXD Curve Access Sys Sgl, OUS, Material Number (UPN) M635TS80010; intended to provide vascular and transseptal access for the family of WATCHMAN FLX LAAC Devices with Delivery Systems.

DateAug 29, 2025 (initiated Jul 29, 2025)
StatusOpen, Classified
ReasonBoston 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.
Root causeUnder Investigation by firm
ActionBoston 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
Quantity340185 units in total
DistributionWorldwide.
FDA recordOpen on fda.gov

510(k) clearances named in this recall

K212228WATCHMAN FXD Curve Access System
Boston Scientific Corporation, Aug 13, 2021