MAUDE Adverse Event Report: THERAKOS DEVELOPMENT LIMITED CELLEX PHOTOPHERESIS SYSTEM

Catalog Number	CLXCC-I
Medical Device Problem Code	Coagulation in Device or Device Ingredient (1096)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	04/23/2026
Type of Reportable Event	Malfunction
Additional Manufacturer Narrative
The system was used for treatment.This case is reportable as a mdr due to the reportable malfunction clot observed in the return line.Since this reportable malfunction is only associated with the kit, this mdr will only be against the kit.A batch record review for kit lot n269 was conducted.There were no non-conformances related to the complaint.This lot met all release requirements.A review of kit lot n269 shows no trends.Trends were reviewed for complaint categories, clot observed and alarm #17: return pressure.No trends were detected for these complaint categories.At the time of this report, the complaint investigation is still in process.A final report will be filed when the investigation is complete.(b)(4), (b)(6) 2026.
Event or Problem Description
The customer contacted therakos to report clots observed in the return line with their cellex photopheresis kit ("kit") during an extracorporeal photopheresis (ecp) treatment.The customer also reported alarm #17: return pressure alarms and observed blood clotting in the return line when approximately 355 ml of whole blood had been processed.The ecp treatment was aborted, and residual blood was not returned to the patient.No product or photographs will be returned for evaluation.The patient has been reported to have been stable.No patient harm has been reported.

• Brand Name: CELLEX PHOTOPHERESIS SYSTEM
• Common Device Name: CELLEX PHOTOPHERESIS SYSTEM
• Manufacturer (Section D): THERAKOS DEVELOPMENT LIMITED; blanchardstown; dublin, D15 A P2D; EI D15 AP2D
• Manufacturer (Section G): HARMAC MEDICAL PRODUCTS; i.d.a. business park; castlerea roscommon, ; EI
• Manufacturer Contact: brian stimson ; 1170 us highway 22; suite 302; bridgewater, NJ 08807 ; 5852335524
• MDR Report Key: 25103703
• Report Number: 3036773437-2026-00048
• Device Sequence Number: 9991518
• Product Code: LNR
• UDI-Device Identifier: 00705030000029
• UDI-Public: (01)00705030000029(10)N269(17)261101
• Combination Product (Y/N): Y
• Initial Reporter Country: GM
• PMA/510(K) Number: P860003
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Serviced by Third Party (Y/N): Unknown
• Reporter Type: Manufacturer
• Report Source: Foreign,Health Professional
• Initial Reporter Occupation: Nurse
• Type of Report: Initial,Followup
• Report Date (Section B): 06/05/2026

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 Catalogue Number: CLXCC-I
• Device Lot Number: N269
• Was Device Available for Evaluation?: No
• Is the Reporter a Health Professional?: Yes
• Type of Report(Section G): Follow-Up
• Initial Date Received by Manufacturer: 04/23/2026
• Supplement Date Received by Manufacturer: 05/07/2026
• Initial Report FDA Received Date: 05/06/2026
• Supplement Report FDA Received Date: 06/05/2026
• Was Device Evaluated by Manufacturer? (Y/N): No
• Date Device Manufactured: 11/18/2024
• 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