MAUDE Adverse Event Report: BIOTRONIK AG PK PAPYRUS US 2.5/20; COVERED CORONARY STENT SYSTEM

Model Number	434893
Medical Device Problem Code	Fracture (1260)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	01/07/2026
Type of Reportable Event	Malfunction
Event or Problem Description
The pk papyrus covered stent system was selected for treatment of a type iii perforation in the lad caused by the wire.Balloon dilatation was performed in order to stop the bleeding.An attempt was then made to use the complaint pk papyrus, but it broke prior to deployment.Subsequently, another pk papyrus was used which was successfully implanted and sealed the perforation.
Event or Problem Description
The pk papyrus covered stent system was selected for treatment of a type iii perforation in the lad caused by the wire.Balloon dilatation was performed in order to stop the bleeding.An attempt was then made to use the complaint pk papyrus, but it broke prior to deployment.Subsequently, another pk papyrus was used which was successfully implanted and sealed the perforation.
Additional Manufacturer Narrative
The affected pk papyrus stent system was returned to the manufacturer and subjected to a detailed technical investigation.Images of the case such as angiographies could not be obtained.The technical investigation revealed that the hypotube has fractured about 281 mm distal to the kink protector.At the fracture sites the cross-section of the hypotube is no longer circular but compressed into an ellipse and the polymer coating is plastically deformed.In addition, the hypotube was found kinked close to the fracture sites.The findings indicate that the hypotube most probably fractured as a result of significant bending outside of the patient's body.The stent of the complaint device was not returned.Then balloon is still well folded and shows no signs of inflation.The proximal balloon shoulder is severely compressed, which is indicative for pushing against resistance.Stent imprints are visible on the exposed balloon surface which indicates that the stent was initially crimped in between the two radiopaque markers.The provided clinical information (pk papyrus device registration form) was 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 conducted investigations and the review of the provided documentation, no manufacturing related root cause could be identified.The root cause for the complaint event is most likely related to the handling of the device.Please note that the ifu advises the user to exercise care during device handling to reduce the possibility of accidental breakage, bending or kinking of the stent system shaft.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 2.5/20
• Common Device Name: COVERED CORONARY STENT SYSTEM
• Manufacturer (Section D): BIOTRONIK AG; ackerstrasse 6; bulach, zurich 8180 ; SZ 8180
• Manufacturer (Section G): BIOTRONIK AG; ackerstrasse 6; bulach, zurich 8180 ; SZ 8180
• Manufacturer Contact: ramona ergler ; ackerstrasse 6; bulach, zurich 8180 ; SZ 8180
• MDR Report Key: 24256047
• Report Number: 8043892-2026-01211
• Device Sequence Number: 20919277
• Product Code: NIV
• UDI-Device Identifier: 07640130447219
• UDI-Public: (01)07640130447219(17)260702(10)06241763
• Combination Product (Y/N): N
• Initial Reporter State: OH
• Initial Reporter Country: US
• PMA/510(K) Number: H17004
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Serviced by Third Party (Y/N): Unknown
• 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): 04/21/2026

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 Expiration Date: 07/02/2026
• Device Model Number: 434893
• Device Lot Number: 06241763
• Was Device Available for Evaluation?: Yes
• Is the Reporter a Health Professional?: Yes
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 01/21/2026
• Supplement Date Received by Manufacturer: 01/21/2026
• Initial Report FDA Received Date: 02/04/2026
• Supplement Report FDA Received Date: 04/21/2026
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Date Device Manufactured: 07/03/2024
• 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 Sex: Unknown