Release date: 2006-11-13 China has developed small-caliber artificial blood vessels. "We have successfully developed artificial blood vessels with a diameter of less than 6 mm. This technology has filled the international gap and contributed to the treatment of various vascular diseases." The person in charge of the artificial blood vessel project, Beijing Institute of Technology materials Professor Cao Chuanbao, the deputy dean of the college, proudly said in an interview with the reporter of Life Times. Selection of high quality yellow Marshal apple with a diameter of 80mm.
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It is understood that the artificial blood vessel is based on silk fibroin and has a diameter of only 3 to 5 mm. In the animal test, doctors at the Fuwai Hospital of the Chinese Academy of Medical Sciences replaced the dog's carotid artery with a man-made blood vessel. After a year and a half observation, the dog is in good condition.
When performing treatments such as arteriosclerosis and aneurysms, it is almost necessary to remove the blood vessels of the affected part by more than 1 cm. However, the stretch length of blood vessels is limited, and it is very difficult to suture after surgery. Therefore, artificial blood vessels are required to replace the resected portion during treatment.
Professor Cao introduced that in the field of artificial blood vessels, 6 mm is a dividing line. At present, artificial blood vessels larger than 6 mm in diameter, especially larger than 10 mm, have been commercialized, and small-caliber blood vessels of less than 6 mm have become an international problem. "This is related to the materials currently widely used. Large-caliber artificial blood vessels are generally made of synthetic polymer materials. The test found that the clogging rate is as high as 60%, which is not suitable for the development of small-caliber blood vessels."
Professor Cao added that from the effect of animal experiments, the small-caliber artificial blood vessel has a good anastomosis effect with the blood vessels in the body, and can keep the blood flowing smoothly. Researchers are currently preparing for clinical trials. Once the trial is successful, the small-caliber vascular graft will be used to replace the arteriovenous vein of the patient's defect, or as a shunting channel for arterial occlusion, and as an alternative to arteriovenous graft replacement for hemodialysis in patients with kidney disease. "Meddy Medical Network"
