Fluorometer, For Clinical Use（KHO）

The Substrate Monitoring System in the AIA-900 Analyzer did not detect an empty substrate bottle. The issue may lead to erroneous immunoassay test results.

A display screen software issue on the analyzer causes the display to freeze when display screen is touched at the same time as a command from the instrument firmware, causing the instrument to stop. As a result, the run is aborted and the results are not retrievable.

Luminometer Malfunction May Cause Inability to Process MicroWell Assays on VITROS¿ Systems

Luminometer Malfunction May Cause Inability to Process MicroWell Assays on VITROS¿ Systems

Tosoh Bioscience has become aware of a potential issue with the axis base of the turntable rotation drive motor on the AIA-900 Analyzer. If the tension of the timing belt between the turntable rotation pulley and drive motor is not adjusted correctly, it is possible to increase the lateral load on the motor axis resulting in the inclination and damage of the motor axis. Since January 12, 2017, Tosoh has been inspecting the tension of the timing belt during scheduled preventative maintenance visit and correcting the analyzers where this issue has been observed. If the drive motor fails, the AIA-900 analyzer will cease to function and will be unavailable for use. If this issue occurs, there may be a delay in testing and reporting patient test results. Tosoh has received five (5) complaints related to this issue with no serious injuries reported.

Tosoh Bioscience has become aware of a potential issue with the pickup arm and pickup arm motor on the AIA-900 Analyzer. If the pickup arm or pickup arm motor malfunctions, the analyzer will cease to function and result in an inability to test patient samples. This may cause a delay in testing and reporting patient results. Tosoh has received fifty-one (51) complaints related to this issue with no serious injuries reported.

Tosoh Bioscience has become aware of a potential issue with the AIA-900 and AIA-2000 analyzers that could result in slippage of the incubator unit contained within the system. If the tension of the timing belt is not adjusted correctly, it is possible for a misalignment that will result in a mechanical error. Tosoh has taken the required actions to inspect the tension of the timing belt during preventative maintenance and correct the instruments where this issue has been observed. If incubator slippage occurs, the unit will cease to function, and a system error will be reported. If this occurs, there may be a delay in testing and reporting patient test results. There have been no reports of injury related to this issue.

Tosoh Bioscience has become aware of a potential issue with the AIA-900 and AIA-2000 analyzers that could result in slippage of the incubator unit contained within the system. If the tension of the timing belt is not adjusted correctly, it is possible for a misalignment that will result in a mechanical error. Tosoh has taken the required actions to inspect the tension of the timing belt during preventative maintenance and correct the instruments where this issue has been observed. If incubator slippage occurs, the unit will cease to function, and a system error will be reported. If this occurs, there may be a delay in testing and reporting patient test results. There have been no reports of injury related to this issue.

A software issue may cause the liquid volume detection entries for 2nd and 3rd reagent bottles to be overwritten with the data from the 1st reagent bottle. Tosoh has released software version 2.51 (or later) to fix the problem. This failure is mitigated by the hardware design. The consequence would be a slight delay in testing patient sample or reporting patient result.

There is a possibility that the liquid suction pump on some AIA-2000 analyzers may not perform as intended and cause an insufficient volume of wash solution to be removed during the washing step. Incomplete washing of the sample may result in falsely elevated test results for the sandwich assays and falsely decreased test results for the competitive binding assays. Insufficient washing is detectable through review of the calibration data and QC trending. For example, if incomplete washing occurs, the reported values for the zero- calibration rate will be above the acceptance range. The calibration value may shift and the instrument will not calibrate successfully. If this issue occurs, there may be a delay in testing and reporting patient test results. There have been no user or patient injuries reported related to this issue.

The firm has implemented new product labeling changes for the Tosoh AIA-360 Analyzer. These labeling changes affect the Tosoh Quick Reference Guide, Training Manual and Training DVD previously provided by Tosoh Bioscience. These changes are being made to align the Tosoh Quick Reference Guide and associated training materials to the Operators Manual and provide clarification to the requirement that the maintenance of the B/F probe is to be performed by Tosoh a field service representative, the requirement for use of 70% Ethanol during daily shutdown procedures and the requirement for use of CAP Class 1 reagent grade water for dilution of the concentrated wash and diluent solutions and reconstitution of lyophilized reagents. Failure to follow these requirements may negatively affect system performance, lead to corrosion of instrument components over time, or result in bacterial contamination, respectively.

The firm has become aware of a potential issue that may affect the mixing motor drive harness and mixing home detection sensor relay harness on your AIA-900 Analyzer. It is possible that the harnesses could rub against the Plarail chain during operation and result in premature wear. If observed, this issue will cause the following system error to be reported D.lane Mix home overrun error [4093] . If observed, this issue will cause the AIA-900 Analyzer not to function and the D.lane Mix home overrun error [4093] will be reported by the system. Replacement of the motor drive harness and mixing home detection sensor relay harness will mitigate the potential for premature wear and effectively prevent this issue from causing the system error. If the sensor relay harness fails, the AIA-900 analyzer will cease to function and will be unavailable for use. If this issue occurs, there may be a delay in testing and reporting patient test results. Tosoh is aware of two complaints associated with the unexpected wearing of the harness. There have been no user or patient injuries reported that are related to this device malfunction.

This recall has been initiated due to a potential malfunction of the photo interrupter (Pl). The potential malfunction has been attributed to aging and premature deterioration of the Pl collector current.

This recall has been initiated due to a potential malfunction of the photo interrupter (Pl). The potential malfunction has been attributed to aging and premature deterioration of the Pl collector current.

The firm has become aware of a potential issue with the AIA-360 analyzer that could prevent the table home sensor from detecting the table home position. If the malfunction with the table home sensor occurs on the AIA-360, the sensor board may need to be replaced. If the home sensor fails to detect the home position, the AIA-360 analyzer will cease to function and will be unavailable for use. If this issue occurs, there may be a delay in testing and reporting patient test results. Tosoh has received three (3) complaints related to this issue with no serious injuries reported.

The firm became aware that the ball bushing axels are defective in the GSP instrument. During exposure to humid conditions, there is a risk that the axle material will corrode. Deterioration of the axle can be observed as deposits of corrosion on the defective axles. Ball bushing axles may corrode and corrosion particle may cause contamination in the wells or the corrosion will cause movement issues and possibly spillage and causing contamination of the plate wells.

The firm became aware that the ball bushing axels are defective in the GSP instrument. During exposure to humid conditions, there is a risk that the axle material will corrode. Deterioration of the axle can be observed as deposits of corrosion on the defective axles. Ball bushing axles may corrode and corrosion particle may cause contamination in the wells or the corrosion will cause movement issues and possibly spillage and causing contamination of the plate wells.

AutoDELFIA System with Version 3.0 Software: Potential plate loading failures

AutoDELFIA System with Version 3.0 Software: Potential plate loading failures

AutoDELFIA System with Version 3.0 Software: Potential plate loading failures