The market size is small and there is no data accumulation. How can manufacturers and clinicians use it to research products? It’s useless to compare with foreign countries because I don’t know what to compare with. I only know how to blow holes.
Mr. Xie has been focusing on the essence of this bragging from the beginning. Don’t let others lead you by the nose easily. She came back from the future with relevant data, and the research report produced after the number of domestic cases increased to a certain level gave some substantial pointers as to why domestic products are worse than foreign products.
"The maximum pore diameter in foreign countries can be 80 microns, and the average is more than 50 microns. This is a small artificial blood vessel. You can also say that if you want to achieve 80 microns, it is okay, but you have to do 80 microns. Those who don’t have their small-sized artificial blood vessels make large-sized artificial blood vessels because they are big. To put it bluntly, the manufacturing process is different. The stretch of domestic products is several times that of foreign products.”
The expanded body is drawn and sintered.
The man from the manufacturer stared at her face: Are you a doctor? Are you sure it's just a doctor?
Really just a doctor. Xie Wanying explained to the other party in detail the key points of artificial blood vessels in the eyes of doctors: "The most challenging thing about artificial blood vessels is not the large diameter, but the small diameter tubes that are small enough to a certain extent."
The difficult problem for large-diameter pipes and small-diameter pipes is strength, fear of insufficient strength. Larger diameter pipes may be able to increase their strength by adding thicker layers. Small diameter pipes as small as tiny don't have this shortcut to tensile strength. Looking around the world, there are all difficult projects, and it is even more difficult for the domestic artificial blood vessel industry that has just started.
When the teachers discussed it today, she immediately realized that they were talking about small-diameter pipes. Why, first, Teacher Fu didn't mention the recent surgery case of Axi's mother at all. The latest application cases that meet the requirements can be brought out and talked about at the meeting. Second, the problem with the anastomosis was in line with the problems revealed in scientific research reports she had seen in the future.
"When our surgeons perform surgical suturing, the needle thread's foothold is within an area approximately 2mm away from the nozzle. What determines the fixation strength of the suture is the crystallinity of the material, the node width and fiber length in the material, etc., not a single hole diameter. It’s related. Have you done any data on the crystallinity of domestic products compared with foreign products? The longer the fiber length, the smaller the node width, and the smaller the strength. Foreign products have uniform nodes, and some have large pores but short fibers. You don’t know the domestic process yourself He admitted that to make the hole diameter larger, the fiber must be stretched as long as possible. During the operation, if the doctor happens to cut the worst node with scissors, the problem of relatively uniform nodes abroad is small, and problems are prone to occur in China. You asked the doctor to use an electron microscope to cut artificial blood vessels, how is this possible?"
This classmate retorted loudly to the other person's point, but the other person was silent for a long time.
All the teachers sitting here can finally breathe a sigh of relief. They are non-professionals who don’t understand materials science and can only listen to what the manufacturers say. Now that this classmate has mentioned it, they have found some direction, and the next step can be to engage in related medical research.
To be honest, Xie Wanying said these words not just for show, but in her heart she must hate iron for not being able to become steel. You must know that after more than ten years, when she checked the information, she could only recommend her friends to choose foreign products. Some domestic manufacturers are just muddle-headed when making products and don't think about striving for excellence because they cost too much money. However, medicine is very rigorous, and medical devices cannot be made into clothes that can be worn casually.
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