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Nuevo calienta-camas que se caracteriza en quedar formado por una boquilla especial que se coloca en la boca del usuario y conduce el aire de la expiración al interior del lecho mediante un conducto flexible, dotándose para ello de una tubuladura con una válvula de salida unidireccional, y de un elemento elástico que se fija a cada lado exterior de la boquilla y sirve para colocarla y mantenerla ajustada sobre la boca del usuario.