The utility model discloses a self navigable pedicle drill bit, which includes a drill rod and a drill connected with a drill rod. The drill rod is an elastic rod with elastic deformation ability at the connection with the drill. The structural design of the utility model is reasonable and the use effect is outstanding. The joint of drill rod and bit end is set as elastic rod with elastic deformation ability. When the bit is rotating at high speed, it keeps a straight forward state. After entering soft cancellous bone, it can keep straight forward, and when it touches hard cortical bone, the elastic rod is deformed and ball type. The grinding head is actively avoided to ensure that the bit is always in the cancellous bone and does not destroy the cortical bone of the pedicle, thus achieving the orientation of the self navigation and changing the position, reducing the difficulty of the operation, improving the accuracy of the nail planting, reducing the operation time, reducing the bleeding, reducing the risk of operation, and making the doctors of the Department of orthopedics and the patients with the spinal disease. Spinal pedicle screw implantation will be a revolutionary change and has great value for popularization.
【技术实现步骤摘要】
自导航式椎弓根钻头
本技术属于医疗器械
,具体涉及自导航式椎弓根钻头。
技术介绍
在腰椎和胸椎大部分疾病的手术治疗中,椎弓根螺钉固定达到三维固定的目的,是脊柱后路内固定中最常用和最简便有效的方法,术中要用手锥或电钻头由关节突基底部经椎弓根到达椎体,经探测后再植入椎弓根螺钉,由于解剖的原因或手术医师的经验不足和判断有误,临床上存在着椎弓根的误植,导致轻则内固定失效,重则出现血管、神经及内脏损伤等并发症,给患者带来无尽的痛苦,也给医生带来无尽的烦恼和挫败感。为了提高准确率,降低植钉风险,现在最常用的方法为C臂X光机透视下植钉,但病人及医护人员要受到辐射伤害;也有人报道术中CT三维导航能大大提高植钉的准确率,但手术操作繁琐,设备价格昂贵,得不到普遍的开展;人类胸椎和腰椎椎体的形态大致一样,都拥有可视为管状的椎弓根,由坚硬的皮质骨包绕着松质骨构成,手术中必须防止穿破内层或外层皮质骨,传统椎弓根钻头或手锥只能按照医生掌握的方向直线前进,遇到皮质骨,要么穿刺失败,要么穿破椎弓根,术中可能需要多次调整钻头方向,手术难度大,时间长,并发症多。为了降低手术难度,快速准确的进行手术,现提出一种自导航式椎弓根钻头来解决传统椎弓根钻头或手锥不能主动避让皮质骨的情况,实现自导航式椎弓根钻头在椎弓根穿刺过程中自行改变方向顺着椎弓根的方向行进,确保钻头在椎弓根内行走,而不穿破椎弓根。降低椎弓根螺钉误植率减少手术并发症,让骨科医生快速的掌握椎弓根螺钉技术,让广大的患者得到更好的治疗。
技术实现思路
本技术针对上述问题提供自导航式椎弓根钻头目的在于解决传统锥弓根钻头或手锥只能直线行进,不能主 ...
【技术保护点】
1.自导航式椎弓根钻头,其特征在于:包括钻杆和与钻杆连接的钻头,所述钻杆在与钻头的连接处为一段具有弹性形变能力的弹性杆。
【技术特征摘要】
1.自导航式椎弓根钻头,其特征在于:包括钻杆和与钻杆连接的钻头,所述钻杆在与钻头的连接处为一段具有弹性形变能力的弹性杆。2.如权利要求1所述自导航式椎弓根钻头,其特征在于:所述钻杆呈圆柱体,钻杆端部设有与手电钻配合的呈梯形台状夹持体。3...
还没有人留言评论。发表了对其他浏览者有用的留言会获得科技券。