Inhaler spacer device of 750 ml volume designed for the application of certain bronchodilator drugs: Ventolin, Becotide, Becloforte, Serevent, Flixotide, Seretide. The design features two irregular cone trunks that fit perfectly together at the bases. It avoids the need for synchronism between pulsation and inhalation, thus achieving greater control of the dose required for treatment, since it forms a slow-moving nebulizer that facilitates the drug to reach the site of action.