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	10/17/2025
Type of Reportable Event	Malfunction
Event or Problem Description
The user facility reported to terumo cardiovascular that prior to cardiopulmonary bypass, during prime, there was leakage occurred at the large blue luer cap.No health consequences or impact.Product was changed out.Procedure 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 november 14, 2025.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 sample was returned and 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 from the large venting luer.The large venting luer was then loosened and re-tightened by hand.The sample was then leak tested a second time by connecting with the calibrated manometer, submerged into a water bath, and pressurized up to 1030 mmhg, and no leaks were noted.A retention sample from the same lot number was visually inspected and confirmed to have no traces of buffer on the outside of the unit or inside the pouch.The retention sample was then pressurized with air up to 1030 mmhg, submerged in a water bath, and observed for any leaks.No leaks were noted on the retention sample.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: 23557397
• Report Number: 1124841-2025-00092
• Device Sequence Number: 10114607
• Product Code: DRY
• UDI-Device Identifier: 00699753160767
• UDI-Public: (01)00699753160767(17)260331(10)5E07D
• 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): 01/07/2026

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: 03/31/2026
• Device Model Number: CDI510H
• Device Catalogue Number: N/A
• Device Lot Number: 5E07D
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Date Returned to Manufacturer: 11/10/2025
• 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: 10/21/2025
• Supplement Date Received by Manufacturer: 12/16/2025
• Initial Report FDA Received Date: 11/14/2025
• Supplement Report FDA Received Date: 01/07/2026
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Date Device Manufactured: 04/28/2025
• 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