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作者在1500例鼓室成形术的基础上,设计和发展了一种小柱状听骨赝复物,包括头和柄二部。头部由致密羟基磷灰石组成,长4mm、宽3mm、厚2mm,恰与鼓膜紧张部后上缘内测凹面吻合,头部椭圆形表面与鼓膜相贴,以防锐缘造成鼓膜穿孔。赝复物柄由聚四氟乙烯制成,全听骨赝复物(TORP)柄的直径0.8mm、长1.0cm,部分听骨赝复物(PORP)为管样柄,外径1.78mm,内径1.17mm,固位于赝复物头部中点。按手术需要,只须简单修剪柄的长度即可备用,有时要刮除鼓室盾板(scutum)骨质,使赝复物装置于镫骨上部,能最大限度地与移
Based on 1500 cases of tympanoplasty, the authors designed and developed a small columnar ossicular prosthesis, consisting of two parts, the head and the handle. The head consists of dense hydroxyapatite, length 4mm, width 3mm, thickness 2mm, just after the tympanic membrane tension on the upper edge of the concavity coincide with the concave surface of the head oval-shaped surface of the tympanic membrane to prevent rupture of the tympanic membrane perforation. The stem of the prosthesis was made of Teflon. The TORP stem had a diameter of 0.8 mm and a length of 1.0 cm. Some of the porcelain prostheses (PORP) The inner diameter of 1.17mm, fixed at the midpoint of the head of the prosthesis. According to surgical needs, simply by cutting the length of the handle can be spare, and sometimes to scrape the drum sculls (scutum) bone, the prosthesis device in the stapes upper part of the maximum with the shift