Fig. 4
From: 3D-printed mouthpiece adapter for sampling exhaled breath in medical applications
Left: Assembled breath sampling device comprising the ReCIVA breath sampler (right), a 3D-printed mouthpiece adapter (an adapter made from BioMed Clear resin is depicted; centre), a disposable pulmonary function filter (left), and thermal desorption tubes to sample breath (bottom-centre). The nose clip depicted is used as an adjunct during breath sampling to ensure mouth breathing. Right: Close-up of the underside of the adapter with three inserted thermal desorption tubes and one open tube orifice fitted with an O-ring