Surgical, medical, dental and veterinary apparatus and instruments, namely, medical devices for improving the pulmonary and phonatory functions, namely, valves, universal adaptors for valves for phonatory implants, tubes and laryngectomy tube, shower protectors in the form of external medical devices affixed outside the tracheostomy hole with a tube pointing downward, heat and moisture exchangers, disposable tracheal protections comprised of a shield worn around the neck and covering the tracheostomy hole, all the above goods being intended for laryngectomized and tracheotomized subjects