An automatic magnetic particle grinding and polishing machine for the inner wall of a vascular stent tube driven by a double magnetic pole pair electromagnet

Abstract

The invention discloses an automatic magnetic particle grinding and polishing machine for the inner wall of a blood vessel stent pipe material driven by a double magnetic pole pair electromagnet. The grinding and polishing machine includes: electromagnet moving transmission device, DC electromagnet, vascular stent tube clamping and rotating driving device, machine base and numerical control system. Among them, the DC electromagnet has two pairs of magnetic poles with opposite positive and negative poles. The surface of each magnetic pole is provided with a plurality of long grooves with the same shape and size. The two sides of the magnetic gap are equipped with guide seats with the same shape and size. Guide sleeve. This magnetic particle grinding and polishing machine can remove and polish the inner wall surface of two vascular stent tubes of different materials and different pore diameters, quickly remove the deterioration and defect layers on the inner wall surface, and significantly reduce the toxicity of the vascular stent to the patient after being implanted in the blood vessel. Side effects, blood deposition, thrombus and vascular restenosis, blockage and other phenomena. The invention is simultaneously applicable to the uniform micro-removal and mirror polishing of the inner wall surfaces of various ultra-slender pipes.

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...

AI Technical Summary

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

Images