Endoscopic esophageal variceal ligation apparatus

Abstract

The invention discloses an endoscopic esophageal variceal ligation apparatus which comprises a ligation outer tube and an endoscope connecting base. The ligation outer tube is in a cone shape of which the front part is thin and the rear part is thick; a ligation inner tube is arranged in the ligation outer tube; the front end of the ligation inner tube is in sealing connection with the front end of the ligation outer tube; the rear end of the ligation inner tube is connected with a negative pressure suction tube; a plurality of positioning holes are distributed at an equal interval front and back on the side wall of the ligation outer tube; a positioning pin is arranged in each positioning hole; a pulling ring is arranged at the inner end of each positioning pin; the pulling rings of a plurality of positioning pins are fixedly connected with a stay wire; the ligation outer tube is sleeved with rubber rings of which the number is equal to that of the positioning pins; each rubber ring is respectively limited by one positioning pin to be prevented from sliding forwards by the self. The endoscopic esophageal variceal ligation apparatus has a simple, small and compact structure, can be used for continuously carrying out ligation and is high in efficiency; the endoscopic esophageal variceal ligation apparatus is convenient and rapid to operate and works stably and ligation success efficiency is improved; moreover, the esophageal wall cannot be contused, so that pain of a patient is reduced and the infection risk is reduced.

Description

technical field [0001] The invention relates to a medical device, in particular to an endoscopic esophageal varices ligation device. Background technique [0002] my country is a country with a large incidence of hepatitis B, so liver cirrhosis complicated by rupture and bleeding of gastroesophageal varices has accounted for the second cause of upper gastrointestinal bleeding. The onset is ferocious, and the mortality rate is as high as 50%. Endoscopic ligation of esophageal varices is to ligate the varicose veins in sections and points by using a ligation device equipped with one or more rubber ligation rings under the endoscope, so as to achieve hemostasis and shrink the varicose veins , and then disappear, is the first choice for gastroesophageal varices. The current endoscopic esophageal varices ligation devices are divided into multi-shot ligation devices that can be ligated continuously and single-shot ligation devices that can only be ligated once. Continuous ligati...

AI Technical Summary

Problems solved by technology

Because the backguy winding method of the above-mentioned multi-burst lashing set is more complicated, the pulling force required for the backguy is relatively large when the rubber ring is excited, and the operation is laborious. A slight inappropriateness will also cause the backguy to be entangled and affect the normal driving of the rubber ring; The number of pull wires wound on the ligation tube is large, which increases the volume of the ligation tube and reduces its operational flexibility; at the same time, the front end of the ligation tube needs to be in close contact with the esophageal wall during the ligation process However, since most of the pull wires need to pass through the front end of the ligation tube during the winding process, the front end of the ligation tube is not smooth, making it difficult to closely contact with the esophageal wall, which affects the effect on the ligated tissue. In addition, during the use of the above-mentioned multi-shot ligation device, the pull wire is in contact with the esophageal wall at the front end of the ligation tube. Great pain, but also increased risk of infection

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