Equipment for monitoring changes in the diameter of medical stents

Abstract

The invention relates to equipment for monitoring the tube diameter change of a medical stent, mainly aiming at solving the problems that a tube wall is damaged due to frequent contact between a measuring tool and the stent by adopting a contact measuring method in the prior art and a tube is tightly clamped by a rear-end fixture during continuous feeding because the tube diameter of the medical stent is out of tolerance. The technical scheme is that a feeding shaft, a non-contact precision measuring probe and a control system are adopted, measurement signals of the non-contact precision measuring probe are input into the control system, the control system controls the feeding shaft to feed, the control system is provided with an automatic alarming function, the non-contact precision measuring probe is arranged between a cutting area and a stent tube clamping area of stent laser cutting equipment, and the non-contact precision measuring probe conducts real-time tube diameter tolerance measurement to the section of the stent tube which passes through the measuring section of the measuring probe when the stent tube is fed during cutting. By adopting the technical scheme, the problems are better solved and the equipment can be used in the manufacturing industry of medical stent tube measuring equipment.

Description

technical field [0001] The invention relates to a device for monitoring the diameter change of a medical bracket. Background technique [0002] With the rapid development of material science and precision micromachining technology, there are more and more types of medical stent materials. The more common ones are stainless steel 316L, nickel-titanium alloy, cobalt-based alloy, pure iron, magnesium alloy and other metal materials, as well as polymers, etc. non-metallic materials. Because the medical stent expands the vascular wall in the blood vessel to prevent vasoconstriction or even cause various diseases, it is required that the characteristic structure and size of the ribs on the stent be consistent in order to maintain the same tension at each point of the whole stent. The bracket processing technology puts forward higher requirements. Generally, medical stents are processed with seamless pipes. Due to the incomplete development of interventional surgery in the world ...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is that the medical stent tube adopts contact measurement, which causes frequent contact between the measuring tool and the stent, resulting in damage to the tube wall, and the problem of being stuck by the back-end tooling fixture due to the continued feeding of the medical stent due to the out-of-tolerance diameter of the medical stent tube. The invention provides a new automatic measuring device for the diameter of the medical support pipe, which uses a non-contact measuring head to measure the pipe diameter of the support pipe, so as to avoid damage to the pipe wall caused by the contact measuring tool frequently contacting the support pipe. And due to the out-of-tolerance diameter of the medical stent, it was stuck by the back-end tooling fixture as a result of continuing to feed the material

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