MAUDE Adverse Event Report: THORATEC CORPORATION THORATEC® HEARTMATE® XVE AND HEARTMATE II®, APICAL CORING KNIFE; VENTRICULAR (ASSIST) BYPASS

Model Number	1050
Medical Device Problem Code	Dull, Blunt (2407)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	06/09/2025
Type of Reportable Event	Malfunction
Additional Manufacturer Narrative
No further information was provided.A supplemental report will be submitted when the manufacturer¿s investigation is completed.
Event or Problem Description
It was reported that the surgeon had difficulty coring the apex using the apical coring knife and had to use more force when coring.The apex was intact with calcification.The surgeon had to remove extra cardiac tissue that was not removed with the apical coring knife using other surgical tools.There were no issues with the patient.
Additional Manufacturer Narrative
Manufacturer's investigation conclusion: evaluation of the returned coring knife, serial number (b)(6), confirmed increased cutting resistance as well as blade imperfections; however, a specific cause for these findings could not be conclusively determined through this evaluation.The coring knife was returned in a plastic jar without the protective caps present.The knife handle was not returned.Residue consistent with blood and tissue was present on the knife body and blade edge.Evidence of rust was observed on the blade end, consistent with fluid contact during the implant surgery.Visual and microscopic inspection of the knife revealed multiple blade edge imperfections.A cut test was performed with the returned coring knife and a polyurethane sheet.The knife was able to cut through this material without issue; however, there was increased resistance when compared to a control knife.Review of manufacturing documentation found no deviations from manufacturing or quality specifications.These inspections include a cut test and visual inspection of the knife edge under magnification.The coring knife passed all testing and inspection.A manufacturing analysis task was initiated to further investigate; however, this additional analysis determined that the cause of the observed knife issues was not manufacturing related.Additionally, a corrective action/preventive action (capa) investigation was opened to further investigate issues related to the coring knife not being able to cut.The relevant sections of the device history records were reviewed and showed no deviations from manufacturing or quality assurance specifications.The current revision of the instructions for use (ifu) can be found on the eifu page of the abbott website.The heartmate 3 left ventricular assist system (lvas) ifu, rev.D, is currently available.Chapter 1, "introduction", lists the apical coring knife as an optional component for device implantation.Chapter 5, ¿surgical procedures¿, provides information on preparing and handling the coring knife.This chapter also states that during the implant process, a complete backup system (implant kit and external components) must be available on-site and in close proximity for use in an emergency.No further information was provided.The manufacturer is closing the file on this event.

• Brand Name: THORATEC® HEARTMATE® XVE AND HEARTMATE II®, APICAL CORING KNIFE
• 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: fredric gold ; 6035 stoneridge drive; pleasanton, CA 94588 ; 7818528207
• MDR Report Key: 22359129
• Report Number: 2916596-2025-03981
• Device Sequence Number: 8052925
• Product Code: DSQ
• UDI-Device Identifier: 00813024010227
• UDI-Public: (01)00813024010227(17)271123
• Combination Product (Y/N): N
• Initial Reporter State: PA
• Initial Reporter Country: US
• PMA/510(K) Number: P160054
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Serviced by Third Party (Y/N): Unknown
• Reporter Type: Manufacturer
• Report Source: Health Professional,Company Representative
• Initial Reporter Occupation: Other Health Care Professional
• Type of Report: Initial,Followup
• Report Date (Section B): 02/20/2026

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Is this an Adverse Event Report?: No
• Is this a Product Problem Report?: Yes
• Operator of Device: Health Professional
• Device Model Number: 1050
• Device Catalogue Number: 1050
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Date Returned to Manufacturer: 06/16/2025
• 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: 06/10/2025
• Supplement Date Received by Manufacturer: 02/19/2026
• Initial Report FDA Received Date: 06/30/2025
• Supplement Report FDA Received Date: 02/20/2026
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Date Device Manufactured: 11/23/2024
• 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
• Patient Age: 59 YR
• Patient Sex: Male
• Patient Weight: 107 KG
• Patient Ethnicity: Non Hispanic
• Patient Race: White