MAUDE Adverse Event Report: TERUMO CARDIOVASCULAR SYSTEMS CORPORATION CDI¿ SHUNT SENSOR; MONITOR, BLOOD-GAS, ON-LINE, CARDIOPULMONARY BYPASS

Model Number	CDI510H
Medical Device Problem Code	Leak/Splash (1354)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	03/02/2026
Type of Reportable Event	Malfunction
Event or Problem Description
The user facility reported to terumo cardiovascular that during cardiopulmonary bypass, when the pump started, leakage of priming solution was noted from the sensor located on the side with the blue luer cap.*no consequence or health impact to patient *product was changed out *procedure was completed successfully.
Additional Manufacturer Narrative
Terumo has received the device for evaluation; however, the investigation has yet to be completed.Terumo plans on submitting a follow-up report when the investigation is complete and when more information becomes available.For this reason, terumo references evaluation conclusion code 11.H3: evaluation is in progress, but not yet concluded.
Additional Manufacturer Narrative
This follow-up report is submitted to fda in accord with applicable regulations ¿ and as indicated by terumo cardiovascular systems in the initial report submitted to the fda on march 27, 2026.Upon further investigation of the reported event, the following information is new and/or changed: g3 (date received by manufacturer).G6 (indication that this is a follow-up report).H2 (follow-up due to additional information and device evaluation).H3 (device evaluated by manufacturer).H6 (identification of evaluation codes 10, 11, 3331, 4210, 19).The returned sample was visually inspected upon receipt, during which it was noted that the white luer cap was not returned on the unit and a tubing/connector was connected to the sparger port.It was also noted that there was a significant amount of dried blood within the threads of the large venting luer.A white luer cap was added to the sample for testing; the unit was then leak tested, as received by connecting with a calibrated manometer, submerged into a water bath, and pressurized up to 1030 mmhg and a leak was noted immediately.The large venting luer was then loosened and re-tightened by hand.The sample was then leak tested a second time and no leak was noted.A retention sample from the same lot number was visually inspected and confirmed to have no anomalies.It was also leak tested, and no leak was noted.The root cause for this event was determined to be the large venting luer on the shunt sensor was not fully tightened either during setup of the circuit, or after the gas calibration.When the large venting luer was loosened, it had not been re-tightened fully, causing a leak from the cap.All available information has been placed on file in quality management for appropriate tracking, trending, and follow-up.

• Brand Name: CDI¿ SHUNT SENSOR
• Common Device Name: MONITOR, BLOOD-GAS, ON-LINE, CARDIOPULMONARY BYPASS
• Manufacturer (Section D): TERUMO CARDIOVASCULAR SYSTEMS CORPORATION; 125 blue ball road; elkton MD 21921
• Manufacturer (Section G): SAME
• Manufacturer Contact: douglas patton ; 125 blue ball road; elkton, MD 21921 ; 7346634145
• MDR Report Key: 24716303
• Report Number: 1124841-2026-00029
• Device Sequence Number: 12194102
• Product Code: DRY
• UDI-Device Identifier: 00699753160767
• UDI-Public: (01)00699753160767(17)260831(10)5L22A
• Combination Product (Y/N): N
• Initial Reporter Country: JA
• PMA/510(K) Number: K133658
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Serviced by Third Party (Y/N): Unknown
• Reporter Type: Manufacturer
• Report Source: Other,Foreign,Health Professional,User Facility,Company Representative
• Initial Reporter Occupation: Other Health Care Professional
• Type of Report: Initial,Followup
• Report Date (Section B): 05/22/2026

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: 08/31/2026
• Device Model Number: CDI510H
• Device Catalogue Number: N/A
• Device Lot Number: 5L22A
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Date Returned to Manufacturer: 03/24/2026
• 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: 03/03/2026
• Supplement Date Received by Manufacturer: 04/30/2026
• Initial Report FDA Received Date: 03/30/2026
• Supplement Report FDA Received Date: 05/22/2026
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Date Device Manufactured: 10/15/2025
• 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