adjustable tracheostomy valve and moisture and heat exchanger

摘要

It is an adjustable tracheostomy valve that includes a housing that has a first opening that is adapted to open for a tracheostomy and a second opening that opens to the environment. The housing includes a lower housing portion defining the first opening and an upper housing portion movably attached to the lower housing portion and defining the second opening. A closing member is arranged in the housing and adapted to close the second opening. A flexible membrane includes a first region connected to the closing member and a plurality of spiral-shaped legs extending from the first region and connected to the housing. The upper and lower housings are axially adjustable in relation to each other to adjust an amount of air flow through the valve that would cause the closing member to close. A moisture and heat exchanger is arranged in the housing between the first opening and the second opening.