Diagnostic Equipment

Potential for fluorescein interference to cause inaccurately elevated results for certain Tosoh AIA assays

lack of 510K

Siemens Healthcare Diagnostics has identified an issue with Dimension Vista software v.3.7 and v.3.8.1 that may result in aliquot well contamination. If a test is cancelled by the operator while the instrument is aliquotting the sample, the Dimension Vista instrument may continue to deliver the cancelled sample or vial contents to the aliquot well(s). Future samples may be assigned to the same aliquot well(s) and become contaminated with the existing contents or overflow of the aliquot well may occur potentially contaminating a surrounding well(s). This issue only occurs when an operator manually cancels a test(s) for calibration, quality control (QC) or patient sample while the instrument is in the process of aliquotting the sample.

Table may drift in the roll position while in use

There are 3 issues: 1) Under certain conditions, real time waveforms may not be accurately plotted or displayed. 2) The oxygen saturation (SpO2) numeric value displayed on the device may freeze. 3) In auto cycle mode, if the NIBP communication is lost, the pump would not cycle and the non-invasive blood pressure (NIBP) numeric value displayed on the device would not update.

Software anomaly may incorrectly extend the on-analyzer stability time for a loaded VITROS Reagent.

There have been reports of shortened (T1-T2) results, where some instances of result recovery outside of the range of less than or equal to 15 seconds.

lack of 510K

lack of 510K

An incorrect test result for a single analyte may have been reported for up to 800 physician reports

False resistant results for Streptococcus anginosus and Streptococcus constellatus strains were reported.

Table may drift in the roll position while in use

Siemens Healthcare Diagnostics has identified an issue with Dimension Vista software v.3.7 and v.3.8.1 that may result in aliquot well contamination. If a test is cancelled by the operator while the instrument is aliquotting the sample, the Dimension Vista instrument may continue to deliver the cancelled sample or vial contents to the aliquot well(s). Future samples may be assigned to the same aliquot well(s) and become contaminated with the existing contents or overflow of the aliquot well may occur potentially contaminating a surrounding well(s). This issue only occurs when an operator manually cancels a test(s) for calibration, quality control (QC) or patient sample while the instrument is in the process of aliquotting the sample.

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.

RBC Reagent failure. High fluorescent counts during RBC Reagent + Diluent QC check that will result in failed QC check, preventing user from testing patient samples for RBC.

lack of 510K

lack of 510K

Table may drift in the roll position while in use

There have been reports of shortened (T1-T2) results, where some instances of result recovery outside of the range of less than or equal to 15 seconds.