Jebria A B, Henry C, Petit J, Gioux M, Devars F, Traissac L
Laboratoire de Physiologie, Université de Bordeaux II, France.
Artif Organs. 1987 Oct;11(5):383-7. doi: 10.1111/j.1525-1594.1987.tb00949.x.
Performance of a voice prosthesis, used to restore speech in patients following total laryngectomy, was evaluated by measuring in vitro, as well as in vivo, airflow resistances. The pressure-flow characteristics of the device were analyzed using the standard pressure-flow diagram (to calculate airway resistance) and a Moody plot (to determine the different flow patterns). The flow rate and the pressure drop were measured with a Fleisch pneumotachograph and a variable reluctance transducer, respectively. Total device resistances were found in the range of 34-50 cm H2O/L/s when the flow-rates ranged from 0.05 to 0.35 L/s. Comparison of these resistances with those of other commercially available devices showed that our voice prosthesis had the lowest resistance.
通过体外和体内测量气流阻力，对用于全喉切除术后患者恢复言语功能的语音假体性能进行了评估。使用标准压力-流量图（以计算气道阻力）和穆迪图（以确定不同的流动模式）分析了该装置的压力-流量特性。分别使用弗莱施呼吸流速仪和可变磁阻传感器测量流速和压降。当流速范围为0.05至0.35L/s时，发现整个装置的阻力范围为34-50cmH2O/L/s。将这些阻力与其他市售装置的阻力进行比较表明，我们的语音假体具有最低的阻力。
