MAUDE Adverse Event Report: THORATEC CORPORATION THORATEC® HEARTMATE II®, LVAS IMPLANT KIT, US, EP; Ventricular (assist) bypass

Model Number	103695
Medical Device Problem Code	Adverse Event Without Identified Device or Use Problem (2993)
Health Effect - Clinical Codes	Gastrointestinal Hemorrhage (4476); Melena (4480)
Date of Event	09/10/2025
Type of Reportable Event	Serious Injury
Event or Problem Description
It was reported that patient was readmitted for bloody stool.Bleeding was confirmed however two superficial esophageal ulcers had no evidence of recent bleeding and five angioectasias were noted with bleeding that were found in the gastric antrum.The bleeding resolved.Hemostasis was achieved using argon plasma.
Additional Manufacturer Narrative
Manufacturer's investigation conclusion: the pump remains in use supporting the patient.A correlation between the device and the report of gastrointestinal (gi) bleeding could not be conclusively determined.Bleeding is listed in the instructions for use as a potential adverse event that may be associated with the use of heartmate ii left ventricular assist system.Gi bleeding has been previously investigated and will continue to be monitored through quality data reviews, which are conducted on production and post product signals to evaluate if products are conforming to product requirements.No further information was provided.The manufacturer is closing the file on this event.

• Brand Name: THORATEC® HEARTMATE II®, LVAS IMPLANT KIT, US, EP
• Common Device Name: Ventricular (assist) bypass
• Manufacturer (Section D): THORATEC CORPORATION; 6035 stoneridge drive; pleasanton CA 94588
• Manufacturer (Section G): THORATEC CORPORATION; 6035 stoneridge drive; pleasanton CA 94588
• Manufacturer Contact: lindsey sallese ; 6035 stoneridge drive; pleasanton, CA 94588 ; 7818528207
• MDR Report Key: 23393546
• Report Number: 2916596-2025-06701
• Device Sequence Number: 13274955
• Product Code: DSQ
• UDI-Device Identifier: 00813024010616
• UDI-Public: (01)00813024010616(17)130930
• Combination Product (Y/N): N
• Initial Reporter State: CT
• Initial Reporter Country: US
• PMA/510(K) Number: P060040
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2010
• Serviced by Third Party (Y/N): N
• Reporter Type: Manufacturer
• Report Source: Health Professional,Company Representative
• Initial Reporter Occupation: Other Health Care Professional
• Type of Report: Initial
• Report Date (Section B): 10/27/2025

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Is this an Adverse Event Report?: Yes
• Is this a Product Problem Report?: No
• Operator of Device: Lay User/Patient
• Device Expiration Date: 09/30/2013
• Device Model Number: 103695
• Device Catalogue Number: 103695
• Was Device Available for Evaluation?: No
• Is the Reporter a Health Professional?: Yes
• Was the Report Sent to FDA?: No
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 10/08/2025
• Initial Report FDA Received Date: 10/27/2025
• Was Device Evaluated by Manufacturer? (Y/N): No
• Date Device Manufactured: 10/01/2010
• Is the Device Labeled for Single Use? (Y/N): Yes
• Is This a Single-Use Device that was Reprocessed and Reused on a Patient? (Y/N): No
• Usage of Device: Initial
• Patient Sequence Number: 1
• Outcome Attributed to Adverse Event: Hospitalization; Required Intervention
• Patient Age: 80 YR
• Patient Sex: Male
• Patient Weight: 84 KG