Have you heard of a single-use device that will automatically separate dead CHO cells from living cells in a continuous bioprocess?

I think you are referring to the BioSettler, a single-use disposable solution from Sudhin Biopharma that separates both dead mammalian cells, as well as the associated cell debris, from viable cells. It was the subject of a talk at the most recent ECI conference on Cell and Gene Therapies VI. Here is the link to more information;