Tracheostomy valve for laryngectomized patient has speech valve housing with 2 ring grooves taking filters and tracheal canula inside tube flanges and lock allowing replacement of valve membrane

摘要

Tracheostomy valve for laryngectomized patients has a speech valve housing (3) with 2 ring grooves D1 and D2 for taking HME filters and tracheal canula inside tube flanges and the valve membrane (1) can be replaced by means of a variable valve membrane lock.