A medical device manufacturer requested that Dellshire investigate an unexpected operational error in a fluid processing system; solutions were being routed to incorrect containers resulting in unacceptable mixing and waste levels. It was desired by the company to understand further if a software bug is present or if conditions were met for this to occur.
Dellshire software and mechanical experts reviewed run logs and error reports as well as conducted internal testing on a hardware simulator. A code review was also completed and subsequently a code change was proposed to resolve the logic error. Dellshire installed the code fix for this bug and re-ran all protocols that the company had identified with solution handling errors. After analyzing the test results, the results show that the system operation is now consistent with the instrument logic and that the system is operating as intended and designed.