Electromotor and permanent magnet series connection type vascular stent tube material inner wall magnetic particle grinding and polishing machine

Abstract

The invention discloses an electromotor and permanent magnet series connection type vascular stent tube material inner wall magnetic particle grinding and polishing machine. The electromotor and permanent magnet series connection type vascular stent tube material inner wall magnetic particle grinding and polishing machine comprises a rotating magnetic pole movement transmission device, a rotatingmagnetic pole device, a vascular stent tube material clamping and feeding device, a machine base and a numerical control system. A pair of permanent magnet magnetic poles which are opposite in positive pole and negative pole are arranged in a magnetic pole roller of the rotating magnetic pole device, micro grooves are formed in the surfaces of the magnetic poles, and the size of a magnetic gap isadjusted by a threaded rod. Guide bases which are same in shape and size are installed at the two ends of the rotating magnetic pole device. The electromotor and permanent magnet series connection type vascular stent tube material inner wall magnetic particle grinding and polishing machine can conduct inner wall surface layer removal and polishing operation on vascular stent tube materials with different materials, different lengths and different hole diameters, quickly removes defect layers which exist on the inner wall surfaces, and remarkably reduces the frequency of the phenomenon that after vascular stents are implanted into blood vessels, the toxic and side effects, blood flow object deposition, thrombi, vascular restenosis, blockage and other phenomena happen on patients. Meanwhile,the electromotor and permanent magnet series connection type vascular stent tube material inner wall magnetic particle grinding and polishing machine is suitable for uniform trace removal and mirrorpolishing machining of the inner wall surfaces of various ultra-thin and ultra-long tube materials.

Description

technical field [0001] The invention belongs to the field of uniform micro-removal and mirror polishing on the inner wall surface of ultra-slender pipes, in particular to the removal of defect layers and mirror polishing on the inner wall surface of ultra-slender blood vessel stent pipes. Background technique [0002] Vascular stent refers to the placement of internal stents in the diseased segment on the basis of lumen balloon expansion to support the stenotic and occluded segment of the vessel, reduce elastic recoil and reshaping of the vessel, and maintain smooth blood flow in the lumen. Some internal stents can also prevent restenosis. Mainly divided into coronary stents, cerebrovascular stents, renal artery stents and aortic stents. [0003] Vascular stents are divided into metal tantalum, medical stainless steel, nickel-titanium alloy, magnesium-based alloy and iron-based alloy according to the material. Vascular stents have achieved remarkable curative effects after...

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Problems solved by technology

[0005] At present, the length of various vascular stents available in the world is mostly about 1.8m. Due to the small diameter and large length of such slender tubes, traditional polishing methods cannot achieve uniform removal and polishing of the surface layer of the inner wall. Therefore, The inventor of this patent invented the magnetic particle grinding and polishing machine, and achieved excellent results in the application

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