MAUDE Adverse Event Report: BIOTRONIK AG, BUELACH, SWITZERLAND PK PAPYRUS US 3.0/26; COVERED CORONARY STENT

Model Number	434899
Medical Device Problem Code	Failure to Advance (2524)
Health Effect - Clinical Code	Cardiac Tamponade (2226)
Date of Event	02/26/2025
Type of Reportable Event	Malfunction
Event or Problem Description
During lithotripsy a perforation had occurred in the mid lad.After successful placement of the pk papyrus covered stent, a competitors des was attempted to be implanted but stripped off balloon.Attempts were made to deliver small balloons within the stripped stent but nothing was able to pass through the stent.It appeared this resulted in the stent bunching within the middle of the pkp.Patient required emergent cabg.
Additional Manufacturer Narrative
The affected pk papyrus stent system was not returned to biotronik and could therefore not be subjected to a technical investigation.Images of the case such as angiographies could also not be obtained.The provided clinical information (pk papyrus device registration form, cathlab report) and the production documentation were reviewed to establish whether a device deficiency contributed to this event.Review of the production documentation confirmed that the device was manufactured according to specifications and fulfilled all the requirements of in-process and final inspection.Based on the provided documentation and the conducted review, no manufacturing related root cause could be identified.The treating physician rated the outcome as unclear if it is a device- and/or procedure-related complication.Pk papyrus is indicated for the treatment of acute perforations of native coronary arteries and coronary bypass grafts in vessels 2.5 to 5.0 mm in diameter.As such, this device is typically used in emergent response to a life-threatening adverse procedural event unrelated to use of the pk papyrus.

• Brand Name: PK PAPYRUS US 3.0/26
• Common Device Name: COVERED CORONARY STENT
• Manufacturer (Section D): BIOTRONIK AG, BUELACH, SWITZERLAND; ackerstrasse 6; buelach CH-81 80; CH CH-8180
• Manufacturer Contact: 6024 jean road; lake oswego, OR 97035 ; 8772459800
• MDR Report Key: 21655671
• Report Number: 1028232-2025-01413
• Device Sequence Number: 7489672
• Product Code: NIV
• UDI-Device Identifier: 07640130447271
• UDI-Public: (01)07640130447271(17)2506
• Combination Product (Y/N): N
• Initial Reporter State: MN
• Initial Reporter Country: US
• PMA/510(K) Number: H170004
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2025
• Serviced by Third Party (Y/N): Unknown
• Reporter Type: Manufacturer
• Report Source: User Facility,Company Representative
• Initial Reporter Occupation: Physician
• Type of Report: Initial,Followup
• Report Date (Section B): 04/16/2025

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?: Yes
• Device Expiration Date: 06/04/2025
• Device Model Number: 434899
• Device Catalogue Number: 434899
• Device Lot Number: 05230155
• Was Device Available for Evaluation?: No
• Is the Reporter a Health Professional?: Yes
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 03/06/2025
• Supplement Date Received by Manufacturer: 04/16/2025
• Initial Report FDA Received Date: 03/20/2025
• Supplement Report FDA Received Date: 04/16/2025
• Was Device Evaluated by Manufacturer? (Y/N): No
• Date Device Manufactured: 06/06/2023
• 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: 82 YR
• Patient Sex: Male