Chronic rhinosinusitis (CRS) is an inflammatory condition of the sinuses and nasal passages, affecting 40 million adults in the US with an annual cost of $10 billion on the healthcare system. Patients chronically experience nasal obstruction (the feeling that they can’t breathe), loss of smell, post-nasal drip and facial pressure, which cause a severe detriment to their quality of life. The treatment options for patients include: 1. Steroids that don’t work for 45% or 18 million patients. 2.Procedures that are expensive, invasive, and still require chronic steroid use. Both leave the same 45% of patients struggling with their symptoms. SinuStim is the first device that targets the root cause of the disease, hyperactive nerves in the nasal cavity. Our solution is a retainer-like device placed in the mouth that sends electrical pulses to regulate the nerves’ signals to the nasal cavity. These pulses regulate nerves to normal levels to significantly decrease tissue inflammation and mucous production. As the nasal cavity opens up, patients can finally breathe comfortably again, and other symptoms begin to subside. With SinuStim patients feel instant and extended relief – all in a drug-free, non-invasive, and comfortable manner.