Correct. But there is a device undergoing clinical trials in the US, under FDA authorization, for treatment of certian viral diseases. One of the effects of extracorporeal blood irradiation is that is manipulates certain genes specifically to shut down cytokine storming. This could be tested in the case of implants or to avoid G vs H. Treating the patient twice before, and twice after, shuts off the cytokine storming without supressing the whole immune system. That way the paitent does not reject the foreign body introduction, but still has a strong immune response to pathogens. A clinical trial would be necessary before approval. Any one suggesting to use another device imported under the radar should be avoided. But a real modern version of the Knott Machine would be worth looking into.