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Method for monitoring changes in diameter of medical stent

A technology for support tubes and monitoring equipment, applied in the direction of optical devices, instruments, laser welding equipment, etc., can solve the problems of back-end tooling and fixtures stuck, stuck, and tube wall damage, so as to avoid tube wall damage and eliminate tube materials twisted effect

Active Publication Date: 2016-04-27
KUNSHAN THETA MICRO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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 method for automatically measuring the diameter of a medical stent pipe. The method uses a cross-section probe to measure the pipe diameter of the stent pipe to avoid damage to the pipe wall caused by contact measurement tools frequently contacting the stent pipe. Continuing to feed the material due to the out-of-tolerance diameter of the medical stent was stuck by the back-end tooling fixture

Method used

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  • Method for monitoring changes in diameter of medical stent
  • Method for monitoring changes in diameter of medical stent
  • Method for monitoring changes in diameter of medical stent

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Experimental program
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Effect test

Embodiment 1

[0038] A method for monitoring changes in the pipe diameter of a medical stent, the equipment used includes measuring equipment and monitoring equipment, the measuring equipment is composed of a measuring platform and a feeding support module, a measuring shafting system is fixed on the measuring platform, and the The measuring shaft system system includes a rotating shaft, and a measuring equipment control system is set under the measuring platform. The measuring platform is equipped with an automatic feeding clamping mechanism, a fixed shaft, a linear shaft, a rotating shaft and a through-beam measuring head. The feeding clamp There are bushing holes on the holding mechanism, and there are feeding support modules on the left and right sides of the measuring platform; there are signal generators and signal receivers in the shooting head;

[0039] The monitoring equipment is fixed on the two-dimensional motion platform of the laser cutting machine, and includes the anti-radiati...

Embodiment 2

[0045] A method for monitoring changes in the pipe diameter of a medical stent, the equipment used includes measuring equipment and monitoring equipment, the measuring equipment is composed of a measuring platform and a feeding support module, a measuring shafting system is fixed on the measuring platform, and the The measuring shaft system system includes a rotating shaft, and a measuring equipment control system is set under the measuring platform. The measuring platform is equipped with an automatic feeding clamping mechanism, a fixed shaft, a linear shaft, a rotating shaft and a through-beam measuring head. The feeding clamp There are bushing holes on the holding mechanism, and there are feeding support modules on the left and right sides of the measuring platform; there are signal generators and signal receivers in the shooting head;

[0046] The monitoring equipment is fixed on the two-dimensional motion platform of the laser cutting machine, and includes the anti-radiati...

Embodiment 3

[0060] A method for on-line monitoring of the diameter change of a medical stent, wherein the monitoring device is fixed on a two-dimensional motion platform of a laser cutting machine, and includes a shot density measuring head and a monitoring device control system, and the signal of the shooting head is input into the monitoring device control system , the monitoring equipment control system controls the feeding of the rotating shaft, the monitoring equipment control system has an automatic alarm function, and the through-beam measuring head is arranged between the cutting area of ​​the support pipe laser cutting equipment and the support pipe clamping area, and the support When the pipe material is fed during the cutting process, the through-beam measuring head performs real-time pipe diameter tolerance measurement on the section of the bracket pipe passing through the through-beam measuring head.

[0061] Between the cutting area (right end) of the bracket laser cutting eq...

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Abstract

The invention relates to a method 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 method can be used in the manufacturing industry of medical stent tube measuring equipment.

Description

technical field [0001] The invention relates to a method for monitoring the diameter change of a medical stent. 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 an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/10B23K26/38B23K26/70B23K26/03
Inventor 魏志凌宁军夏发平
Owner KUNSHAN THETA MICRO