MAUDE Adverse Event Report: Tosoh Hi-Tec, Inc. AIA-360; Fluorometer, For Clinical Use

Model Number	AIA-360 IMMUNOASSAY ANALYZER
Medical Device Problem Code	Mechanical Problem (1384)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	08/14/2026
Type of Reportable Event	Malfunction
Event or Problem Description
A customer reported failure mode ¿2012 air detected (diluent)¿ on the aia-360 analyzer.The customer primed the analyzer and no air was noted in the lines.The analyzer is down.A field service engineer (fse) was dispatched to address the reported event which resulted in a delayed reporting of patient samples for beta human chorionic gonadotropin (bhcg).There is no indication of any patient intervention or adverse health consequences due to the delay in reporting of patient results.
Additional Manufacturer Narrative
A field service engineer (fse) was dispatched to address the reported event.The fse confirmed the error during troubleshooting and inspected the analyzer.Upon opening the analyzer cover, the fse identified a bent sample nozzle.The fse replaced the sample nozzle and determined that some sample tube holders were deformed, which had caused the sample needle to bend.The fse validated the analyzer by successfully performing daily check and quality control without error, and within acceptable range.No further action required by field service.The aia-360 analyzer is functioning as expected.The aia-360 operator's manual under section7-1: error messages states the following: (2012) air detected "[diluent]".Description: there is no contact with the liquid after diluent suction.Troubleshooting: contact the service department.The most probable cause of the reported event was due to deformation of the sample tube holders.

• Brand Name: AIA-360
• Common Device Name: Fluorometer, For Clinical Use
• Manufacturer (Section D): Tosoh Hi-Tec, Inc.; 1-37, fukugawa minami-machi; shunan, yamaguchi 74600 42; JA 7460042
• Manufacturer (Section G): Tosoh Hi-Tec, Inc.; 1-37, fukugawa minami-machi; shunan, yamaguchi 74600 42; JA 7460042
• Manufacturer Contact: janefrances ajiduah ; 2-2-1 yaesu; chuo-ku, tokyo 10400-28 ; JA 1040028 ; +1(650)636-8314
• MDR Report Key: 50682351
• Report Number: 3004529019-2026-00123
• Device Sequence Number: 5279627
• Product Code: KHO
• UDI-Device Identifier: 04560189282896
• UDI-Public: 04560189282896
• Combination Product (Y/N): N
• Initial Reporter State: NM
• Initial Reporter Country: US
• PMA/510(K) Number: K971103
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Serviced by Third Party (Y/N): N
• Reporter Type: Manufacturer
• Report Source: Health Professional
• Initial Reporter Occupation: Other Health Care Professional
• Type of Report: Initial
• Report Date (Section B): 09/08/2026

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 Model Number: AIA-360 IMMUNOASSAY ANALYZER
• Device Catalogue Number: 019945
• Device Lot Number: N/A
• 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: 08/14/2026
• Initial Report FDA Received Date: 09/09/2026
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Date Device Manufactured: 09/01/2022
• Is the Device Labeled for Single Use? (Y/N): No
• Is This a Single-Use Device that was Reprocessed and Reused on a Patient? (Y/N): No
• Usage of Device: Reuse
• Patient Sequence Number: 1
• Patient Sex: Unknown