Founded in 1995, Envoy Medical Corporation designs, develops and markets implantable devices for the treatment of sensory disorders. It is a privately held, company that focuses on providing treatments for individuals suffering from sensorineural hearing loss. The company manufactures Esteem-Hearing Implant, which is hearing device that is implanted under the skin behind the ear. Envoy Medical Corporation develops medical treatment for various hearing loss disorders and cochlear issues. Its device uses the eardrum to process the incoming sound that preserves a natural way of hearing. The company is located in Saint Paul, Minn., and maintains various implant centers in Brazil, France, Germany, India, Iran, Italy, Switzerland and Spain.