Electrolytic polishing device for cardiovascular stent

Abstract

The invention relates to the technical field of electrolytic polishing, in particular to an electrolytic polishing device for a cardiovascular stent. The hollow tube is a cylindrical structure with a reamed hole. The inner diameter of the reamed hole: 1.5mm‑30mm, the taper of the reamed hole: 0.01‑1, the depth of the reamed hole: 3.5‑40mm, the wall thickness of the reamed hole: 2mm‑8mm , Round tube height: 4mm‑40mm. The support device is a thin-walled cylindrical device with a hollow top part, the inner diameter of the circumference: 60mm-200mm, the wall thickness: 0.8mm-4mm, the height: 35mm-110mm; the top removal material is: a circle and two symmetrical fan rings, the circle diameter: 3.5mm‑40mm, the center of the circle is concentric with the cylinder; the central angle of the fan ring: 10°‑140°, the short radius: 3mm‑22mm, and the long radius: 25mm‑90mm. The hollow tube can be made of silica gel, rubber, resin, etc., to ensure a certain hardness and not react with the electrolyte. The supporting device can be made of plastics, resins, ceramics and other materials, which cannot be deformed and cannot react with the electrolyte. The invention is simple in structure and convenient in manufacture, and can conveniently, quickly and safely install the metal cathode and the metal anode while ensuring the coaxiality, and the device is located at the bottom end of the electrolytic cell, which reduces the amount of electrolyte and can effectively control the cost. ,Increase productivity.

Description

technical field [0001] The invention relates to the technical field of electrolytic polishing, in particular to an electrolytic polishing device for a cardiovascular stent. Background technique [0002] The rapid spread of cardiovascular diseases around the world has created a strong market demand for cardiovascular stent products. The manufacturing precision and surface integrity of stents have a decisive impact on their service performance. Stent devices with complex microstructures are usually fabricated by laser machining processes. [0003] After the stent is laser cut, ancillary products such as recast layer, burr and slag will inevitably be produced on the surface. The surface roughness and corrosion resistance cannot meet the requirements for use, so the stent needs to be followed up. Electropolishing is a very effective post-processing process to improve surface topography and reduce roughness in precision micro-metallic devices. Therefore, electropolishing of car...

AI Technical Summary

Problems solved by technology

The bracket needs to be clamped and fixed before electrolytic polishing. The traditional bracket polishing device has problems such as complex structure, poor practicability, and high production cost.

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