Device for Performing Spirometry in Total Laryngectomized Patients

Patients who have undergone total laryngectomy (TL) are, in most cases, affected by lung disease due to smoking habits. Therefore, as part of the follow-up protocol for these patients, a spirometry test should be performed to adequately assess lung function. Current spirometers do not allow for spirometry tests in patients who breathe through a tracheostomy, as the patient cannot perform respiratory acts from the spirometer mouthpiece, which is designed to be used by mouth. We have, therefore, designed a device that allows the test to be performed through the tracheostoma. The device is made of biocompatible polymeric material, modeled using a 3-dimensional printer, reusable, and hermetically connected to the spirometer distally and to the tracheostoma proximally. The device was used on 5 patients who underwent TL and was found to be comfortable, safe, and valid for diagnostic purposes.