The utility model discloses a lumbar puncture needle with guide needle, which includes a main needle tube, a needle handle, a needle core and a needle core. The tail end of the main needle tube is connected with the needle handle, the head of the needle core is inserted into the inner cavity of the needle handle, the needle core is installed at the inner cavity port of the needle handle, the main needle tube jacket is connected with a guide needle, the guide needle is fixed on the guide needle seat and the guide needle is fixed. One end of the seat is connected with a guide needle and the guide needle seat content cavity is connected with the guide needle, the other end of the guide needle is provided with a concave cavity, the side wall of the concave cavity is provided with a limit gap, the needle handle is installed with a connecting sleeve, the connecting sleeve is composed of a sleeve, the outer wall of the sleeve is provided with a flexible ear warped out of the outer side, and the sleeve is inserted into the concave cavity of the guide needle and through the flexible ear. The external wall of the concave cavity is provided with a reduction mechanism that drives the flexible ear to shrink out of the limit gap. The utility model is provided with a guiding needle, which can play a guiding role in the lumbar puncture for the obese patients, thereby improving the puncture success rate of the puncture needle.
【技术实现步骤摘要】
带导引针的腰椎穿刺针
本技术属于医疗器械
,尤其是带导引针的腰椎穿刺针。
技术介绍
目前,在脊髓麻醉手术中使用的带导引针的腰椎穿刺针,因其针体偏软,单独完成腰椎穿刺有一定难度,而穿刺针外径稍大,可能发生腰椎穿刺后脑脊液外渗,引起并发症。本技术基于中国专利授权公告号为:CN204744348U的《带导引针的腰椎穿刺针》,做进一步改进,其结构包括主针管,主针管内贯通,主针管后端和针柄固接,针柄内腔与主针管相互连通,针柄内腔内设有针蕊,针蕊包括针芯头和针芯座,针芯头伸入针柄内腔,针芯座与针柄内腔端口配合;对于一些较为肥胖患者或者椎间隙较为狭窄的患者,采用上述带导引针的腰椎穿刺针进行穿刺时,较为困难,穿刺针容易弯曲造成操作失败。
技术实现思路
为了克服现有技术的不足,本技术提供了一种带导引针的腰椎穿刺针,该带导引针的腰椎穿刺针安装有导引针,在针对肥胖患者进行腰椎穿刺时可以起到引导作用,提高穿刺针的穿刺成功率。为了实现上述目的,本技术采用的技术方案是:一种带导引针的腰椎穿刺针,包括主针管、针柄、针芯和针芯座,主针管尾端与针柄连接,且主针管内通道与针柄内腔联通,针芯头部伸入针柄内腔,针芯座安装于针柄内腔端口处,其特征在于:所述主针管外套接有导引针,导引针固装于导引针座上,导引针座一端与导引针连接且导引针座内容腔与导引针贯通,导引针座另一端设有凹腔,凹腔底面设有可供主针管穿过的通孔,凹腔侧壁设有限位缺口,针柄朝向主针管的一端安装有连接套,连接套包括与针柄配合的套体,套体外壁设有朝外侧翘起的挠性耳部,套体内孔可供主针管穿过,套体插入导引针座的凹腔中并通过挠性耳部与限位缺口形 ...
【技术保护点】
1.一种带导引针的腰椎穿刺针,包括主针管、针柄、针芯和针芯座,主针管尾端与针柄连接,且主针管内通道与针柄内腔联通,针芯头部伸入针柄内腔,针芯座安装于针柄内腔端口处,其特征在于:所述主针管外套接有导引针,导引针固装于导引针座上,导引针座一端与导引针连接且导引针座内容腔与导引针贯通,导引针座另一端设有凹腔,凹腔底面设有可供主针管穿过的通孔,凹腔侧壁设有限位缺口,针柄朝向主针管的一端安装有连接套,连接套包括与针柄配合的套体,套体外壁设有朝外侧翘起的挠性耳部,套体内孔可供主针管穿过,套体插入导引针座的凹腔中并通过挠性耳部与限位缺口形成定位配合,凹腔外壁相应设有卡接于限位缺口外侧端口中的驱使挠性耳部内缩脱出限位缺口的复位机构。
【技术特征摘要】
1.一种带导引针的腰椎穿刺针,包括主针管、针柄、针芯和针芯座,主针管尾端与针柄连接,且主针管内通道与针柄内腔联通,针芯头部伸入针柄内腔,针芯座安装于针柄内腔端口处,其特征在于:所述主针管外套接有导引针,导引针固装于导引针座上,导引针座一端与导引针连接且导引针座内容腔与导引针贯通,导引针座另一端设有凹腔,凹腔底面设有可供主针管穿过的通孔,凹腔侧壁设有限位缺口,针柄朝向主针管的一端安装有连接套,连接套包括与针柄配合的套体,套体外壁设有朝外侧翘起的挠性耳部,套体内孔可供主针管穿过,套体插入导引针座的凹腔中并通过挠性耳部与限位缺口形成定位配合,凹腔外壁相应设有卡接于限位缺口外侧端口中的驱使挠性耳部内缩脱出限位缺口的复位机构。2.根据权利要求1所述的带导引针的...
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