| 摘要 |
<p>A spray forming device primarily intended for administering drugs to patients, said device comprising a mixing chamber (12) having an inlet (14) for carrier gas and an inlet (24) for (usually liquid) agents. A one-way valve in the form of a cylindrical sleeve (30) of rubber is formed in the mixing chamber (12) and normally covers the inlet (24). Supply of agent, for example, from a syringe is of sufficient pressure to deform the sleeve (30) to allow the agent into the mixing chamber (12) where it is atomised within the carrier gas and dispensed through a nozzle (40).</p> |
