Avery Biomedical Devices is a biomedical engineering and device company that invented distributes the Mark IV Breathing Pacemaker, the Phrenic Nerve Pacing device used for patients in the United States. A similar device developed in Finland is approved for use in Europe. The device is placed as an alternative to the traditional ventilator in patients with quadriplegia, central sleep apnea, diaphragm paralysis, and other respiration maladies, so long as the patient's respiratory system still has some residual function.