Cutting fixture

CN122938899APending Publication Date: 2026-10-20江苏科森医疗器械有限公司
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Patent Information

Application Number
CN202611241224.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-06-27
Publication Date
2026-10-20

AI Technical Summary

Technical Problem

[0003]目前在制造过程中,会预先将热缩管热收缩套设在射频针上,而该部分的热缩套管的长度一般大于消融针的长度,后续需要将消融针上多余的热缩套管切除,而现有技术采用相应的切割设备对消融针表面的热缩套管进行切割,用于热缩套管切割的刀头一般固定在切割设备的驱动机构上,并通过刀头移动至消融针的相应位置进行切割,但是,消融针又细又长且为锥形结构,难以将其固定,而在对细、长消融针表面的热缩套管进行切割时,环形刀头与针体之间为硬接触,导致针体容易损坏,而且在移动过程中需要多次调节刀头位置以适应消融针的直径变化,对调节精度提出了更高要求,操作繁琐,也容易造成过度切割损伤针体或者热缩套管未完全切透的情况,切割效果欠佳

Benefits of technology

1、本发明切割固定治具,其轴杆的顶部与容置槽的顶壁之间通过弹性件连接,底部转动安装有环形刀头的安装块与连接座之间具有调节间隙,用于消融针放置的第一弧形槽、第二弧形槽以共轴方式设置,位于第一弧形槽的下方且在第一安装座的顶部开设有一安装有两个主动滚轮的第一凹槽,位于第二弧形槽的下方且在第二安装座的顶部开设有一内部转动安装有两个从动滚轮的第二凹槽,将锥形的消融针放置在共轴设置的第一弧形槽、第二弧形槽上,可以实现消融针的初步定位,并通过环形刀头弹性按压在套设有热缩套管的消融针上,环形刀头、第一凹槽内部的两个主动滚轮、第二凹槽内部的两个从动滚轮共同对消融针进行固定,也可以适应锥形的消融针以维持环形刀头持续按压在热缩套管上,再通过主动滚轮驱动套设有热缩套管的消融针转动,按压在热缩套管上的环形刀头对热缩套管进行切割,实现了热缩套管的被动切割,且结构简单、操作便捷,减少了消融针在旋转过程中发生挠曲的情况,提高了消融针的位置精度,避免了硬性接触导致消融针被压坏的情况,又可以同时对消融针的多处进行切割,还避免了过度切割导致针体损伤的情况,也避免了热缩套管未完全切透的情况,改善了切割效果。

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Abstract

This invention discloses a cutting and fixing fixture. The ablation needle has a conical structure and includes: a base plate, a top plate disposed above the base plate, a support seat disposed on one side of the top plate and on the base plate, and a mounting block with a shaft at the top disposed below the connecting seat. The top of this shaft is connected to the top wall of the receiving groove by an elastic element. An adjustable gap exists between the mounting block, on which an annular cutter head is rotatably mounted, and the connecting seat. A first groove with two active rollers is formed below the first arc-shaped groove and on the top of the first mounting seat, and a second groove with two driven rollers rotatably mounted inside is formed below the second arc-shaped groove and on the top of the second mounting seat. This invention avoids damage to the needle body due to over-cutting and also avoids incomplete cutting through the heat shrink tubing, thus improving the cutting effect.
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