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A kind of cutting process of cardiovascular stent

A cutting process and cardiovascular technology, applied in stents, manufacturing tools, metal processing equipment, etc., can solve problems such as waste of raw material resources, reduce the number of feeding movements, save raw materials, and save processing time.

Active Publication Date: 2018-12-14
JW MEDICAL SYSTEMS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this process, due to the defect of the clamping method of the laser cutting machine, the bracket pipe will have a short distance backward displacement. The extra feed in the cutting direction is about 2mm. Since the extra feed can not be used to produce brackets, several kilometers of pipes will be cut off and discarded in a year, resulting in a great waste of raw material resources.

Method used

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  • A kind of cutting process of cardiovascular stent
  • A kind of cutting process of cardiovascular stent
  • A kind of cutting process of cardiovascular stent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1: Two identical graphics splicing

[0027] Such as figure 1 As shown, the first graphic and the second graphic are spliced ​​end to end according to the dislocation method, and the minimum distance between the first graphic and the second graphic is guaranteed to be 0.020mm, that is, the process of 0.020mm is reserved margin. figure 2 The process margin part is enlarged and displayed, and the width between the two arrows is the process margin.

[0028] Generate the NC program on the host device for the two identical graphics after misalignment, and cut the process margin part of the bracket pipe with a laser cutting machine to separate the two bracket pipes. Use this method for figure 1 The length of the bracket pipe used for cutting the two graphic brackets in the middle is much smaller than the length of the tube used to cut the two graphic brackets one by one according to the traditional method, and it reduces the need to move 2mm more towards the cuttin...

Embodiment 2

[0029] Embodiment 2: Three identical graphics splicing

[0030] Such as image 3 As shown, after splicing the first figure and the second figure end-to-end according to the dislocation arrangement method, then place the tail end of the second figure and the head end of the third figure in dislocation; make each figure The minimum distance between them is 0.020mm, that is, a process margin of 0.020mm is reserved.

[0031] Generate the NC program on the host device for the three misplaced graphics, and cut the process margin of the bracket pipe with a laser cutting machine to separate the three bracket pipes. Use this method for image 3 The length of the bracket pipe used for cutting the three graphic brackets in the middle is much smaller than the length of the tube used for cutting the three graphic brackets one by one according to the traditional method, and it reduces the need to move 4mm to the direction of the cutting machine when cutting alone. To the amount, so as to...

Embodiment 3

[0032] Embodiment 3: Two different graphics splicing

[0033] Such as Figure 4 As shown, two different graphics are spliced ​​end to end according to the dislocation method, and the minimum distance between the first graphic and the second graphic is guaranteed to be 0.020mm, that is, a process margin of 0.020mm is reserved.

[0034] Generate the NC program on the host device for the two different graphics after misalignment, and cut the process margin part of the bracket pipe with a laser cutting machine to separate the two bracket pipes. Use this method for Figure 4 The length of the bracket pipe used for cutting the two graphic brackets in the middle is much smaller than the length of the tube used for cutting the two graphic brackets one by one according to the traditional method, and it reduces the need to move 2mm more towards the cutting machine when cutting alone. To the amount, so as to achieve the purpose of saving pipes. At the same time, cutting these two grap...

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Abstract

The invention discloses a cutting process of a coronary artery stent. A specific operation method comprises the following steps: pre-treating a plurality of stent patterns which are the same or have different specifications respectively; carrying out staggered placement on the tail end of a first stent pattern and the front end of a second stent pattern, so as to move the tail end of the first stent pattern into remains, which do not need to be machined, in the front end of the second stent pattern in a staggered manner; reserving process allowance in a laser cutting process, and so on, and placing the third or more stent patterns; generating an NC procedure on host equipment through the plurality of patterns which are arranged in the staggered manner, and cutting a stent pipe through a laser cutting machine; cutting off the process allowance to separate the coronary artery stents. According to the cutting process of the coronary artery stent, the plurality of stent patterns are arranged in the staggered manner and then are machined as a whole body, so that the production efficiency is remarkably improved and the utilization rate of the pipe is greatly improved, and furthermore, a lot of raw materials are saved.

Description

technical field [0001] The invention relates to a process, in particular to a cutting process of a cardiovascular stent, and belongs to the technical field of medical auxiliary equipment. Background technique [0002] Cardiovascular stents, as commonly used medical devices in cardiac interventional surgery, require a very precise control process when cutting and forming. At present, the cutting and forming of cardiovascular stent tubes mainly adopts laser cutting technology, that is, the cutting graphics are first drawn, and then the stent tubes are cut into cardiovascular stents with a network structure according to the cutting graphics under the control of the computer. Since the raw materials of the cardiovascular stent are relatively expensive 316L stainless steel, cobalt-chromium alloy, nickel-titanium alloy, etc., it is necessary to save the stent tube to the greatest extent when cutting. [0003] When the existing cardiovascular stent cutting machine is producing car...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K26/38A61F2/915
CPCA61F2/915B23K26/38
Inventor 张春明孔令涛林彦廷
Owner JW MEDICAL SYSTEMS LTD
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