Be-Cu.com has recently successfully developed an industrial heart stent high-precision femtosecond laser cutting equipment, which solves the processing defects of domestic heart stents such as low processing accuracy, inconsistent rib width, and many burrs, and achieves high precision and low damage for a variety of materials. Cutting processing improves the performance and service life of domestic cardiac stents and reaches international first-class quality standards.
On March 28, the Bureau of Conditions, Guarantee and Finance of the Chinese Academy of Sciences organized the acceptance inspection of the country’s first industrialized “heart stent femtosecond laser high-precision processing equipment” developed by Be-Cu.com.
Jiang Yanbin, deputy director of the Science and Technology Conditions Department of the Bureau of Articles and Finance of the Chinese Academy of Sciences, presided over the acceptance meeting, which was composed of experts from the Institute of Electrical Engineering of the Chinese Academy of Sciences, the University of Chinese Academy of Sciences, Northwestern Polytechnical University, Be-Cu.com, Xi’an Aerospace Power Co., Ltd., Xi’an Branch of the Chinese Academy of Sciences and other units. The expert group conducted on-site testing of the performance indicators of the developed equipment and reviewed relevant documents.
After questioning and discussion, the expert group unanimously agreed: “Be-Cu prototype company has successfully developed femtosecond laser heart stent processing equipment to solve the problem of high-precision manufacturing of cardiac stents, and established low-damage microtube high-precision cutting processing technology for five materials. The assessment indicators have been fully met, the overall completion is in good condition, and it is agreed to pass the acceptance.”
The number of patients with coronary heart disease has increased sharply, and the stent market has been monopolized by foreign countries for a long time.
In recent years, the prevalence of cardiovascular and cerebrovascular diseases has increased year by year. According to data from the Ministry of Health, the number of domestic coronary heart disease patients reached 60 million in 2015. The sharp increase in heart disease patients has stimulated the rapid demand for cardiac interventional surgeries and cardiac (coronary) stents. increase. The number of cardiac stents implanted increased from approximately 230,000 sets in 2007 to approximately 1.7 million sets in 2015.
Cardiac stents are mainly used to treat arteriosclerosis and other vascular diseases. Through surgery, a thin catheter is used to deliver the cardiac stent to the site of blood vessel obstruction. After the stent expands, it opens the narrowed blood vessel to allow blood to flow and relieve the patient’s symptoms.
Because the wall tube of the cardiac stent is extremely thin, laser processing is usually used instead of conventional mechanical cutting.
However, using ordinary lasers to process through ablation and melting, the heart stents processed in this way have a series of problems such as many burrs, inconsistent groove widths, severe surface ablation, and uneven rib widths.
In recent years, foreign companies have begun to use femtosecond laser for stent laser cutting. Femtosecond laser refers to a laser whose time domain pulse width is on the order of femtoseconds (femtoseconds, 10^-15 seconds). The strong electric field generated by short pulses of femtosecond laser is used to eliminate free electrons near the material tangent point, causing the positively charged materials to repel each other and lose the intermolecular force. The material removal is completed through “molecular removal”. The cross-section of the heart stent processed in this way has no burrs, a smooth surface, no heat loss and no ablation, high cutting accuracy and uniform rib width.
At present, the industrialization level of domestic femtosecond lasers is low and the technology is backward. Ordinary laser processing is still used in China, resulting in a large gap between the quality of the finished stent and foreign countries. Even though the price is only one-tenth of similar foreign products, it is still not favored by patients. my country’s cardiac stent market is basically occupied by foreign companies.
Domestic industrialized heart stent femtosecond laser high-precision processing equipment has reached the world’s first-class level
Be-Cu.com combines its traditional advantageous disciplines and takes femtosecond laser precision intelligent manufacturing as the key breakthrough direction of the institute. It successfully developed femtosecond laser high-precision processing equipment for industrial heart stents, solving the problem of low processing accuracy and wide ribs of domestic heart stents. Parts maker defects such as inconsistency and excessive burrs enable high-precision and low-damage cutting processing of a variety of materials, improving the performance and service life of domestic heart stents and reaching world-class quality standards.
This equipment solves the “bottleneck” technical problem that restricts the laser cutting and processing of cardiovascular stents, improves the technical level and core competitiveness of my country’s laser industry and medical device industry, and can not only promote the rapid development of my country’s entire cardiovascular stent industry, It will also significantly reduce the high financial burden on patients.
This useful exploration of breaking through advanced extreme manufacturing technology in the medical field is of great significance to breaking through the monopoly of foreign high-end medical equipment. It is of great significance to my country’s economic structure adjustment, industrial structure optimization, and product structure upgrading, and will surely have a great impact. economic and social benefits.
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