The invention discloses an auditory ossicle fixing bracket, which comprises an elliptical disc adapted to an elliptical pit on the inner and outer walls of the middle ear cavity and above the tympanic cord nerve. The elliptical disc has a through hole at the center of the elliptical disc. The through hole is arranged along the thickness direction of the elliptical disc. The diameter of the through hole is 0.2 mm to 0.9 mm. The through hole is used to cooperate with the rod part of the auditory ossicle prosthesis. An empty slot is arranged on the disc, which extends from the periphery of the elliptical disc to the through hole, and the width of the empty slot is 0.1 0.5 mm. The auditory ossicle fixator is used in clinical ossicular chain reconstruction operation. With the implantation of auditory ossicle prosthesis (aiming at the case of total ossicular replacement), when the base of auditory ossicle prosthesis is separated from the center of its fixed position, the movement direction of the ossicular ossicle prosthesis is corrected, the ossicular ossicle prosthesis is fixed assistantly, the auditory ossicle prosthesis is prevented from prolapse, and the ossicular ossicle prosthesis bone conduction is satisfied. It can ensure its activities within a certain range.
【技术实现步骤摘要】
听小骨固定支架
本专利技术涉及医疗器械领域,特别涉及一种用于辅助耳科手术的听小骨固定支架。
技术介绍
中耳由鼓膜以及装有听骨链的含气空腔组成,听骨链介于鼓膜和卵圆窗之间,其功能为将鼓膜感受到的声波传入内耳,鼓膜收集声能后通过听骨链传递至镫骨底板,当中耳腔发生炎症,特别是胆脂瘤型中耳炎时,炎症常常会破坏听骨链,造成听骨链的部分或全部缺损,锤骨柄、锤砧关节、砧骨体常受累及,从而造成听骨链中断,使听力的传导出现故障,临床上表现为听力下降;针对此种状态的病患进行手术治疗,术中需要重建缺失、中断或硬化的听骨链,以恢复鼓膜至镫骨底板或卵圆窗的连接。目前临床上常用聚乙烯及各种金属质听小骨假体,但上述材料因目前较为局限的自体骨片固定甚至术中缺乏固定措施(如全置换听骨假体底座容易偏离镫骨足板中心,顶盖与鼓膜连接不牢靠),植入后容易移位和/或排异脱出(如导致听骨移位、脱出鼓膜、甚至突然前庭、损失内耳等并发症),导致患者术后反馈不佳,症状无明显缓解甚至加重(如术后血肿、感染、鼓膜变厚等),手术医生对人工听骨固定的诉求也变得越发强烈。
技术实现思路
本专利技术的目的在于克服现有技术中所存在的 ...
【技术保护点】
1.一种听小骨固定支架,其特征在于,包括椭圆盘(1),所述椭圆盘(1)适配中耳腔内外壁、鼓索神经上方的椭圆凹坑,所述椭圆盘(1)的形心处设有通孔(2),所述通孔(2)沿所述椭圆盘(1)的厚度方向贯通设置,所述通孔(2)的直径为0.2‑0.9mm,所述通孔(2)用于配合听小骨假体(01)的杆部,所述椭圆盘(1)上设有空槽(3),所述空槽(3)从所述椭圆盘(1)周缘延伸至所述通孔(2),所述空槽(3)的宽度为0.1‑0.5mm。
【技术特征摘要】
1.一种听小骨固定支架,其特征在于,包括椭圆盘(1),所述椭圆盘(1)适配中耳腔内外壁、鼓索神经上方的椭圆凹坑,所述椭圆盘(1)的形心处设有通孔(2),所述通孔(2)沿所述椭圆盘(1)的厚度方向贯通设置,所述通孔(2)的直径为0.2-0.9mm,所述通孔(2)用于配合听小骨假体(01)的杆部,所述椭圆盘(1)上设有空槽(3),所述空槽(3)从所述椭圆盘(1)周缘延伸至所述通孔(2),所述空槽(3)的宽度为0.1-0.5mm。2.根据权利要求1所述的听小骨固定支架,其特征在于,所述椭圆盘(1)的一侧椭圆面上设有至少三个支撑脚(4),每个所述支撑脚(4)的长度为0.1-1.2mm,每个所述支撑脚(4)的直径为0.1-1mm。3.根据权利要求2所述的听小骨固定支架,其特征在于,所述椭圆盘(1)的一侧椭圆面上设有三个所述支撑脚(4),所述通孔(2)两侧的所述椭圆面长轴上分别设置一个所述支撑脚(4),所述椭圆面短轴上设置一个所述支撑脚(4)。4.根据权利要求2所述的听小骨固定支架,其特征在于,所述椭圆盘(1)和所有所述支撑脚(4)为一体成型结构件。5.根据权利要求4所述的听小骨固定支架,其特征在于,所述椭圆盘(1)和所有所述支撑脚...
【专利技术属性】
技术研发人员:陈飞,杨聪聪,汪洋,谢涛,
申请(专利权)人:四川华曙图灵增材制造技术有限责任公司,陈飞,
类型:发明
国别省市:四川,51
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