The present invention relates to the technical field of medical appliances, in particular to a special screwdriver for a bone screw, comprising a handle and is characterized in that the cone, modified cone is arranged at the front end of two teeth, the back end is provided with a positioning block, teeth made of stainless steel material, gear tooth tip relative, is arranged in the handle rotating groove, direction of rotation for groove is provided with a rotating device, rotating device is composed of a rotary shaft, gears, roller, ball, a spring, a positioning plate, a positioning sleeve and pull the pin, the invention adopts the structure, collapsible storage, easy to carry and disinfection, has the advantages of novel structure, convenient installation and disassembly, convenient and fast to reduce the pain of patients. ?
【技术实现步骤摘要】
【技术保护点】
一种骨螺钉专用改锥，包括手柄和改锥体，其特征在于改锥体前端设有两个齿牙，后端设有定位块，齿牙采用不锈钢材质制成，齿牙牙尖相对，手柄内设有旋向器槽，旋向器槽内设有旋向器，旋向器是由旋轴、齿轮、牙轮、定位球、弹簧、定位板、定位套和扳销组成，牙轮呈半圆形，牙轮一侧平面上分别设有正向齿牙和反向齿牙，另一侧弧形面上对应设有左定位凹槽和右定位凹槽，旋轴上端设有齿轮，下端设有定位块，定位套的内孔与定位块相配合，旋轴一端的定位块穿过定位板与改锥体上端的定位套相套接，并经定位螺钉相固定，另一端经定位板与手柄相连接，旋轴一侧设有牙轮，牙轮一端经销轴与定位板相铰接，另一端经销轴与扳销固定连接，牙轮经正向齿牙或反向齿牙与齿轮相啮合，旋向器槽侧面设有定位孔，定位孔内设有弹簧和定位球，定位球一端经弹簧与手柄相抵触，另一端与左定位凹槽或右定位凹槽相抵触。
【技术特征摘要】
【专利技术属性】
技术研发人员：鞠传宝，初海滨，姜秀娟，殷泽刚，徐道志，
申请(专利权)人：鞠传宝，
类型：发明
国别省市：37
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