Precise laser engraving forming technology for coronary artery stent

A laser and coronary technology, applied in the field of laser applications, can solve problems such as difficulty in chip falling and inability to fully meet processing accuracy requirements, and achieve the effects of reducing process difficulty, preventing local overheating and mechanical stress release, and improving quality and accuracy

Inactive Publication Date: 2006-02-15
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

However, for coronary stents with finer and more complex structures, this method cannot fully meet the processing accuracy requirements. Therefore, how to further adopt reasonable and advanced laser processing technology has

Method used

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  • Precise laser engraving forming technology for coronary artery stent
  • Precise laser engraving forming technology for coronary artery stent
  • Precise laser engraving forming technology for coronary artery stent

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Embodiment Construction

[0010] The process method of the coronary stent laser precision engraving and forming of the present invention, according to figure 2 The process flow shown is carried out according to image 3 The coronary stent structure shown is designed with a closed-cell sculpted path, according to Figure 5 Divide the cell path into three segments as shown, as indicated by 13, 14, 15, by Image 6 As shown, the unit engraving path controls the program flow for engraving. Engraving is achieved through the relative movement of the focused laser beam on the surface of the stainless steel pipe. When working, the laser beam is perpendicular to the surface of the pipe and remains in a static state. The pipe is controlled by the numerical control system through mechanical components according to the pre-designed graphics. Rotate and feed, synthesize movement track to carry out engraving, engraving process according to Figure 4 To execute the engraving process shown, the laser parameters mus...

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Abstract

The invention provides technical method of precise sculpture and form for coronary crack belonged to laser sculpture application field, which comprises designing crack structure, laser sculpting precisely and forming, and cleaning fallen pieces of ultrasonic; wherein, the structure design means to design sculpture sealed unit and sculpted network structure to determine sculpt path, writing sculpt path program, adjusting and setting laser parameters, regulating flow for oxygen and cooling water, setting sculpt velocity and taking sculpt; the cleaning process uses pure water as medium to clean in ultrasonic cleanser. This technique can prevent effectively the crack deformation and improve the quality and precision.

Description

1. Technical field [0001] The invention belongs to the technical field of laser application and relates to a process method of laser precision engraving for coronary stent formation. 2. Technical Background [0002] Coronary stent is an extremely expensive high-tech product used for interventional treatment of coronary heart disease. During the operation, it is sent to the lesion of the coronary artery by a conveyor, and it is permanently supported on the inner wall of the blood vessel after being stretched by the balloon. Prevention of postoperative vascular occlusion or restenosis. This technology has been recognized as the most effective method for the treatment of coronary heart disease at present. The related manufacturing technology of coronary stents has also attracted the attention of the industry due to its high technical content and high added value, and new products are constantly coming out. [0003] At present, the widely used coronary stents are formed by prec...

Claims

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Application Information

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IPC IPC(8): B23K26/00B23K26/362
Inventor 谢冀江李雨田李维
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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