MAUDE Adverse Event Report: BIOTRONIK AG, BUELACH, SWITZERLAND PK PAPYRUS US 4.5/26; COVERED CORONARY STENT

Model Number	434902
Medical Device Problem Code	Device Dislodged or Dislocated (2923)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	02/14/2022
Type of Reportable Event	Malfunction
Event or Problem Description
After treating a long pseudoaneurysm in a svg with a pk papyrus covered stent, a second pk papyrus stent was selected, but the stent slid back onto the delivery shaft when passing the 7f guideliner.Another pk papyrus was used to complete the intervention successfully.
Additional Manufacturer Narrative
Neither the complaint instrument nor the angiographic material was returned.Therefore, no technical investigation on the subject could be performed.The product release documentation was reviewed to establish whether a deviation from the manufacturing process could be the cause for the reported event.Review of the product release documentation confirmed that the instrument was manufactured according to specifications and passed all in-process and final inspections.As a part of final inspection every stent system undergoes visual inspection to ensure correct embedding and homogeneous crimping of the stent.Further, the stent outer diameter is verified to 100 percent and the stent retention force of a defined amount of samples is tested from every lot.Based on the conducted investigations, no manufacturing or material related root cause was determined.The root cause for the complaint event is most likely related to the extension catheter whose dimensions do not meet the requirements specified in the pk papyrus ifu.Please note that 4.5-5.0 mm pk papyrus stents require guiding- and extension catheters with a larger minimum inner diameter than smaller pk papyrus stent sizes.The ifu further warns against reinsertion as the stent and/or the delivery system may have been damaged during the initial attempt to cross the lesion or during withdrawal.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 4.5/26
• 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: 13660588
• Report Number: 1028232-2022-01076
• Device Sequence Number: 11248721
• Product Code: NIV
• UDI-Device Identifier: 07640130447301
• UDI-Public: 07640130447301
• Combination Product (Y/N): N
• Initial Reporter Country: US
• PMA/510(K) Number: H170004
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Reporter Type: Manufacturer
• Report Source: User Facility,Company Representative
• Initial Reporter Occupation: Other Health Care Professional
• Type of Report: Initial,Followup
• Report Date (Section B): 02/15/2022

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 Expiration Date: 07/31/2023
• Device Model Number: 434902
• Device Catalogue Number: SEE MODEL NO.
• Device Lot Number: 07213426
• 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: 02/15/2022
• Supplement Date Received by Manufacturer: 03/22/2022
• Initial Report FDA Received Date: 03/03/2022
• Supplement Report FDA Received Date: 03/23/2022
• Was Device Evaluated by Manufacturer? (Y/N): Device Not Returned to Manufacturer
• Date Device Manufactured: 08/19/2021
• 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
• Patient Age: 70 YR
• Patient Sex: Male