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作者设计一种低气流阻力、能自行固定的发声器称Provox~(TM)(PT),经79例全喉切除术病人的使用,获得91%的患者有良好的语言功能。PT为医用硅橡胶材料制成的双翼状发音器,轴长8 mm,轴内径5 mm,外径7.5mm;呈圆形较硬的食管翼直径14.5mm,卵圆形可屈曲的气管翼直径12×16mm;发音瓣用环支撑固定于轴上。PT置换程序:局麻,导线经发音器轴心穿过经口拉出,气管翼从旧PT轴上剪去,经导线牵拉发音器从口中拉出新PT系于口端导线上,令病人吞咽并牵拉导线,使可屈曲的气管翼越过气管食管裂孔,而较硬的食管翼仍停于食管中,此时PT双翼嵌
The authors designed a low air flow resistance, self-fixating sounder called Provox ™ (PT), which was used by 79 patients with total laryngectomy to achieve 91% of patients with good speech function. PT is a biplane-shaped sound generator made of medical silicon rubber material, with a shaft length of 8 mm, an inner diameter of 5 mm and an outer diameter of 7.5 mm; a round hardened esophageal wing with a diameter of 14.5 mm and an oval buckled tracheal wing diameter 12 × 16mm; pronunciation of the ring with a ring support fixed to the shaft. PT Replacement Procedure: Local anesthesia, wire pulled through the mouth of the articulator through the mouth, the tracheal wing was cut off from the old PT shaft, a new PT was pulled out of the mouth via a wire-pulling sound generator, The patient swallows and pulls the wire, allowing the flexible tracheal wing to cross the tracheal esophageal fissure while the harder esophageal wing remains parked in the esophagus,