NCHR Testimony at FDA on Sorbent Hemoperfusion Systems

June 27, 2013. These systems are used to filter toxins out of the blood . However, there is not proof that the devices save the lives of patients who are poisoned, have a drug overdose, or are in a coma from liver failure. Because of this lack of evidence, Dr Yttri and the NRC argued that these devices need to undergo clinical testing.

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NCHR Testimony of on Pedicle Screw Spinal Systems

May 22, 2103. Pedicle screw systems are used to stabilize the spines of patients who need spinal fusions to correct spine injuries, deformations, or degeneration. Dr. Yttri pointed out the lack of clear clinical evidence that pedicle screw systems are beneficial for patients and how the FDA should require clinical testing before approving new devices.

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