The utility model discloses an expandable positioning abdominal puncture device, which comprises a sleeve assembly and a puncture needle. The sleeve assembly comprises an upper cover and a tube sleeve. The upper cover is provided with a through hole for puncture needle to pass through. The tube sleeve is coaxial with the through hole, and the back end of the tube sleeve is fixed with the upper cover. The front end of the tube sleeve has an opening for puncture needle tip puncture, and the inner wall of the opening is limited. The surface of the puncture needle is provided with a clamping groove suitable for the limit protrusion. The tube sleeve is near the opening and along a ring-shaped deformation area, which has a stretching state and a contraction state protruding to the outer side of the tube sleeve. The rest of the tube sleeve is composed of rigid parts. When the puncture needle penetrates from the upper cover and protrudes from the opening of the front end of the sleeve, the puncture needle drives the deformed area to remain in the stretching state; when the puncture needle is withdrawn, the deformed area returns to the contracting state from the stretching state and protrudes to the outer side of the sleeve, thus forming a limit structure to limit the shedding of the sleeve assembly.
【技术实现步骤摘要】
一种扩张定位的腹腔穿刺器
本专利技术涉及医疗辅助器械
技术介绍
人体腹腔手术已广泛使用穿刺器,尤其是使用在微创手术领域即腹腔镜手术中。穿刺器是一种刺穿腹壁并为其他手术器械提供进入体腔通道的手术器械,属于一种微创手术器械。穿刺器通常包括作为其他手术器械进入通道的套筒组件组件和贯穿于所述套筒组件组件内的穿刺杆。穿刺器是腹腔镜手术中用于建立手术通道、观察通道的必备器械。现有的腹腔穿刺器为保障能够顺利刺入腹壁,其套筒组件均采用表面光滑的、硬质的设计思路。然而由于其套筒组件表面较为光滑,则容易出现滑动松脱的情况,现有的解决方法是为设计较大的套筒组件长度,令其即使发生轻微的滑动,也能让医护人员在其脱落前有足够的反应时间去重新压紧套筒组件。但是这样的设计方案会使得腹腔穿刺器过长,在穿刺过程中还需要避免插入过深而导致伤及内部脏器。
技术实现思路
针对以上缺点,本专利技术设计了一种扩张定位的腹腔穿刺器,其套筒组件在穿刺针抽出后能够局部向外翻折,从而形成限制套筒组件脱落的限位结构,有效提高腹腔穿刺器的便利性。而且可以缩短腹腔镜的器械,缩短操作力臂,有利于手术医生的精细操作,例如缝合、分离等,同时也减轻手术医生的疲劳。一种扩张定位的腹腔穿刺器,包括套筒组件和穿刺针,所述套筒组件包括上盖和管套,所述上盖设有供穿刺针穿过的通孔,所述管套与通孔共轴,且其后端与上盖固定连接,所述管套的前端具有供穿刺针的尖端刺出的开口,所述开口的内壁设有限位凸起,所述穿刺针表面设有与限位凸起相适配的卡槽,所述管套靠近开口处沿设有环状的变形区域,所述变形区域具有绷直的拉伸状态和向管套外侧凸出的收缩状 ...
【技术保护点】
1.一种扩张定位的腹腔穿刺器,包括套筒组件和穿刺针,所述套筒组件包括上盖和管套,所述上盖设有供穿刺针穿过的通孔,所述管套与通孔共轴,且其后端与上盖固定连接,其特征在于:所述管套的前端具有供穿刺针的尖端刺出的开口,所述开口的内壁设有限位凸起,所述穿刺针表面设有与限位凸起相适配的卡槽,所述管套靠近开口处沿设有环状的变形区域,所述变形区域具有绷直的拉伸状态和向管套外侧凸起的收缩状态,管套其余区域由刚性件构成。
【技术特征摘要】
1.一种扩张定位的腹腔穿刺器,包括套筒组件和穿刺针,所述套筒组件包括上盖和管套,所述上盖设有供穿刺针穿过的通孔,所述管套与通孔共轴,且其后端与上盖固定连接,其特征在于:所述管套的前端具有供穿刺针的尖端刺出的开口,所述开口的内壁设有限位凸起,所述穿刺针表面设有与限位凸起相适配的卡槽,所述管套靠近开口处沿设有环状的变形区域,所述变形区域具有绷直的拉伸状态和向管套外侧凸起的收缩状态,管套其余区域由刚性件构成。2.根据权利要求1所述的扩张定位的腹腔穿刺器,其...
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