| 摘要 |
<p>PCT No. PCT/GB92/02098 Sec. 371 Date May 10, 1994 Sec. 102(e) Date May 10, 1994 PCT Filed Nov. 12, 1992 PCT Pub. No. WO93/09881 PCT Pub. Date May 27, 1993A nebulizer for use in administering a medicament to a patient undergoing treatment for example, comprises an ultrasonic piezo-electric transducer (60) and a transducer drive system (D) which is caused to drive said transducer at or near its anti-resonant frequency. There is also provided means to optimize nebulized fluid particle size and transfer to the patients lungs for example, by operating at an anti-resonant frequency in the range of 1.36 to 1.56 MHz and having a single outlet baffle and relatively short outlet tube (24) arrangement.</p> |
