Significance: Endoscopes represent electro-optical devices that are used to visualize internal body cavities. The specialized endoscopic procedure of the upper gastrointestinal tract from the esophagus down to the duodenum is called an esophagogastroduodenoscopy. Aim: We bring our newly developed capsule endoscopy device as a promising alternative diagnostic method for visualization of the upper gastrointestinal tract. Approach: Capsule endoscopy has become an attractive method that uses a tiny wireless camera to take pictures of the digestive tract. Existing esophageal capsule endoscopy does not allow a retrograde view of the esophagus while retrograde scanning can provide information on the esophageal pathology. Results: In comparison to the existing esophageal capsule endoscopy, our system is much simpler and cheaper due to the need for fewer electronic devices. Moreover, its use is not limited by the capacity of the batteries used by existing capsule endoscopes. The new esophageal endoscopic system was created by combining the universal serial bus (USB) endoscope module with the thin power wires that are routed through the USB port to the computer. Conclusions: The endoscope was tested on a volunteer without any side effects such as nausea, belching, and general discomfort. The examination of the patient is performed in a sitting position and the patient discomfort during the examination is minimal so it can be performed without anesthesia.

中文翻译：

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用于食管逆行成像的 USB 胶囊内窥镜

意义：内窥镜代表用于可视化内部体腔的光电设备。从食道到十二指肠的上消化道专门的内窥镜检查程序称为食管胃十二指肠镜检查。目标：我们将新开发的胶囊内窥镜设备作为一种有前途的上消化道可视化替代诊断方法。方法：胶囊内窥镜已经成为一种有吸引力的方法，它使用一个微型无线摄像头来拍摄消化道的照片。现有的食管胶囊内窥镜不允许逆行观察食管，而逆行扫描可以提供有关食管病理的信息。结果：与现有的食管胶囊内镜相比，由于需要更少的电子设备，我们的系统更简单、更便宜。而且，它的使用不受现有胶囊内窥镜所用电池容量的限制。新的食道内窥镜系统是通过将通用串行总线 (USB) 内窥镜模块与通过 USB 端口连接到计算机的细电源线相结合而创建的。结论：内窥镜在志愿者身上进行了测试，没有任何副作用，如恶心、嗳气和全身不适。病人的检查是在坐姿下进行的，检查过程中病人的不适感很小，因此可以在没有麻醉的情况下进行。新的食道内窥镜系统是通过将通用串行总线 (USB) 内窥镜模块与通过 USB 端口连接到计算机的细电源线相结合而创建的。结论：内窥镜在志愿者身上进行了测试，没有任何副作用，如恶心、嗳气和全身不适。病人的检查是在坐姿下进行的，检查过程中病人的不适感很小，因此可以在没有麻醉的情况下进行。新的食道内窥镜系统是通过将通用串行总线 (USB) 内窥镜模块与通过 USB 端口连接到计算机的细电源线相结合而创建的。结论：内窥镜在志愿者身上进行了测试，没有任何副作用，如恶心、嗳气和全身不适。病人的检查是在坐姿下进行的，检查过程中病人的不适感很小，因此可以在没有麻醉的情况下进行。