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近年来,随着光学纤维仪器的进展,试图借助内窥镜观察整个胃肠道的工作,从未间断。虽然目前业己对各式上,下胃肠道内窥镜进行了各种改良,使检查更趋完善,但适于小肠内窥镜检的仪器仍少。现有的各式上胃肠道内窥镜,长135厘米至180厘米不等,可深达空肠上部,而最标准的结肠镜,仅能通过回盲瓣进入回肠末端约50厘米处。专家对直接观察小肠这一大段标准内窥镜难以达到的部位,仍具有极大的兴趣。由于现在文献中对胃肠道血管异常引起肠道潜在性或明显出血的病案屡有报道,
In recent years, with the progress of optical fiber instruments, trying to observe the entire gastrointestinal tract with an endoscope has never stopped. Although various kinds of upper and lower gastrointestinal endoscopes have undergone various improvements to improve the examination, there are still few instruments suitable for small intestine endoscopy. The various types of upper gastrointestinal endoscopes that range from 135 centimeters to 180 centimeters in length can reach the upper jejunum while the most standard colonoscope can enter the terminal ileum only about 50 centimeters through the ileocecal valve. Experts still have great interest in the direct observation of the small intestine is difficult to reach a large section of the standard endoscopy site. Due to the current literature on gastrointestinal vascular abnormalities caused by intestinal potential or significant bleeding cases have been reported,