The utility model provides a rotary cutting knife, which comprises an outer needle tube and an inner needle tube. Its characteristics are as follows: the front part of the outer needle tube is provided with a knife groove, the front end of the knife groove is provided with an outer needle tube knife edge, the front end of the inner needle tube is provided with an inner needle tube knife edge, the inner needle tube knife edge is wavy, the wave period of the wavy knife edge of the inner needle tube is 1 or more, and Outside the needle tube sleeve, the inner needle tube and the outer needle tube have a common axis line. The inner needle tube rotates forward and backward around the axis line or moves forward and backward along the axis line in a straight line. The rotary cutting knife of the utility model can prevent the clamping knife of the rotary cutting knife caused by the tissue not effectively cutting into the inner needle tube and the outer needle tube clamping seam. For example, it can also prevent the tearing damage caused by the failure to cut the tissue completely. It can also increase the effective cutting edge length, reduce the loss of the blade, and make the rotary cutting tool more durable.
【技术实现步骤摘要】
一种旋切刀
本技术涉及一种旋切刀,尤其涉及一种用于乳腺活检和旋切系统的旋切刀。
技术介绍
目前市面上的真空辅助乳腺活检与旋切系统的旋切刀在切割病灶组织时,存在切割不完全,容易出现撕扯损伤组织,组织物卡死旋切刀具,刀口钝化而中断手术等现象。目前市面上现有旋切刀的外针管的刀槽上均无刀刃。目前市面上现有旋切刀的内针管刀口为圆形平口或圆形斜口,均为直线刀刃,在内针管相同直径的情况下,本专利技术的波浪式刀口的有效切割刀刃长度比市面上现有刀口的刀刃更长。
技术实现思路
基于现有技术的不足,效率低下,本技术专利技术创造的目的提供一种旋切刀,可以防止因组织物未能有效切割从而导致组织物卷入内针管与外针管夹缝中造成的旋切刀卡刀现象,也可以防止因未能完全割断组织物而产生的撕扯损伤组织的现象,还可以增加有效切割刀刃长度,可以降低刀刃的损耗,使旋切刀更加耐用。为了实现上述目的,本技术提供了一种旋切刀,包括外针管、内针管,其特征在于:所述外针管前部设有刀槽口,所述刀槽口的前端设有外针管刀刃,所述内针管的前端设有内针管刀刃,所述内针管刀刃为波浪形,所述内针管的所述波浪形刀刃的波浪周期为1个或1个以上,所述外针管套在所述内针管外,所述内针管与所述外针管有一条共同的轴心线,所述内针管围绕所述轴心线旋转前进后退或者沿着所述轴心线直线前进后退。作为本技术旋切刀的改进,本技术旋切刀的所述外针管的所述刀槽口与轴心线平行的两边设有外针管刀刃。作为本技术旋切刀的改进,本技术旋切刀的所述外针管的所述外针管刀刃与所述内针管的所述内针管的所述波浪形刀刃之间形成取样口。作为本技术旋切刀的改进,本技术旋切刀的所述内针管 ...
【技术保护点】
1.一种旋切刀,包括外针管、内针管,其特征在于:所述外针管前部设有刀槽口,所述刀槽口的前端设有外针管刀刃,所述内针管的前端设有内针管刀刃,所述内针管刀刃为波浪形,所述内针管的所述波浪形刀刃的波浪周期为1个或1个以上,所述外针管套在所述内针管外,所述内针管与所述外针管有一条共同的轴心线,所述内针管围绕所述轴心线旋转前进后退或者沿着所述轴心线直线前进后退。
【技术特征摘要】
1.一种旋切刀,包括外针管、内针管,其特征在于:所述外针管前部设有刀槽口,所述刀槽口的前端设有外针管刀刃,所述内针管的前端设有内针管刀刃,所述内针管刀刃为波浪形,所述内针管的所述波浪形刀刃的波浪周期为1个或1个以上,所述外针管套在所述内针管外,所述内针管与所述外针管有一条共同的轴心线,所述内针管围绕所述轴心线旋转前进后退或者沿着所述轴心线直线前进后退。2.根据权利要求1所述的旋切刀,其特征在于:所述外针管的所述刀槽口与所述轴心线平...
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