Machining method for metal guide wire

Abstract

The invention discloses a machining method for a metal guide wire. The machining method for the metal guide wire comprises the following steps: a. the requirements of an effective length L and a diameter D of the metal guide wire are determined according to the use requirements of a metal wire, and the metal wire meeting the requirements of the length L and the diameter D is selected; b. the metalwire is corrected by virtue of automatic straightening equipment; c. the two ends of the metal wire are grinded into shapes meeting the use requirements; d. cutting is carried out around the metal wire through a laser cutting machine, a cutting depth is h, a cutting section length is l, an included angle between each cutting line and the axis of the metal wire is alpha, and a distance between theadjacent cutting lines is A; and e. the cut metal wire is cleaned. According to the machining method for the metal guide wire, the cutting is carried out around the surface of the metal wire by virtue of the laser cutting machine, the machining process is simple to operate, and one metal wire is adopted, so that material straightening is facilitated, difficult bending or breaking of the metal guide wire is avoided, and meanwhile, over-winding for the metal wire is avoided, the flexibility of the metal guide wire is ensured, and the metal guide wire is enabled to be stable and controllable inperformance.

Description

technical field [0001] The invention relates to the technical field of processing and manufacturing metal guide wires, in particular to a processing method for metal guide wires. Background technique [0002] Metal guide wire is a special metal wire used for guiding, positioning or puncturing. It is widely used in medical operations, and it is also used in threading and positioning of small pipes. During the use of the metal guide wire, it needs to enter or pass through the curved surface, special-shaped surface, S-shaped surface and other pipes, and repeatedly bend in the pipe. Therefore, the metal guide wire has high requirements for flexibility, so as to avoid the metal guide wire Breakage or sharp bends in the pipeline affect the passage or removal of the metal guide wire. The traditional metal guide wire is composed of inner and outer parts. There are two main processing methods for the metal guide wire. One is to use a single helical winding of a metal filament with a...

AI Technical Summary

Problems solved by technology

These two processing methods are composed of helical winding of metal filaments, which cannot be corrected by automatic straightening equipment. The finished metal guide wire may have corners locally. When the effective length of the metal guide wire is small, the The use performance of the metal guide wire has little effect, but when the effective length of the metal guide wire is large, it has a greater impact on the passing and positioning performance of the metal guide wire

At the same time, since the size of the metal guide wire is generally small, the precision of the metal filament used for winding is relatively high. When winding, it is easy to overwind, and it is difficult to control the effective winding quantity, resulting in the partial position of the processed metal guide wire. There are differences in bending ability, flexibility and hardness, which affect the performance of metal guide wires

[0003] Since the metal guide wire is used in medical operations or special-shaped pipelines, and the metal guide wire will bend at the deformation of the pipeline during the working process, the metal guide wire with too high hardness or poor elasticity has poor bending ability and may damage the Even piercing vital organs or equipment, too soft metal guide wire is safer, but the positioning and passing ability is poor, it is difficult to accurately and effectively reach the predetermined position, and it is easy to be entangled and knotted in the pipeline, which prolongs the operation time and is harmful to the operator. higher requirements

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