Temporary esophageal stent extractor

Abstract

The invention relates to an extractor, in particular to a temporary esophageal stent extractor which comprises a guide head, an inner cannula, an outer cannula and a handle. An inner core is arranged in the inner cannula and is of a hollow structure, and the outer cannula is arranged on the outer side of the inner cannula and is connected onto the handle. The temporary esophageal stent extractor has the advantages that the integral cannulas can be pushed into the esophagus of a patient by a push rod, injury to the esophagus of the patient can be reduced under the guide effects of a withdrawing line and the guide head, the guide head can reach a level of the upper end of a temporary esophageal stent under a fluoroscopic monitoring effect, the outer cannula is withdrawn, stent claws are opened, the inner core is withdrawn, the temporary esophageal stent withdrawing line is pulled, the temporary esophageal stent is contracted by the aid of the stent claws and is completely withdrawn into the inner cannula, the outer cannula is pushed, then the stent claws are withdrawn into the outer cannula, the stent extractor can be withdrawn via the esophagus of the patient, and accordingly injury to the esophagus of the patient can be reduced to the greatest extent in stent extraction procedures.

Description

technical field [0001] The invention relates to a extractor, in particular to an esophagus temporary support extractor. Background technique [0002] For some patients with esophageal stenosis, temporary esophageal stent placement is a common treatment method. When the temporary stent is taken out, the current common method is to send the recovery tube to the upper end of the stent, pull the recovery line, and put the upper port of the stent into the recovery tube. Then remove the stand. In this method, the head end of the recovery tube is flat, and it is easy to cause iatrogenic damage to the throat and esophagus during the process of the recovery tube entering the esophagus. During the process of removing the stent, the expanded part of the stent may easily cause damage to the esophagus and throat, and in severe cases, it may cause serious consequences such as esophageal mucosa avulsion, esophageal perforation, and massive bleeding. Therefore it is necessary to invent a ...

AI Technical Summary

Problems solved by technology

In this method, the head end of the recovery tube is flat, and it is easy to cause iatrogenic damage to the throat and esophagus during the process of the recovery tube entering the esophagus. During the process of unloading the stent, the expanded part of the stent can easily cause damage to the esophagus and throat. In severe cases, it can cause serious consequences such as esophageal mucosa avulsion, esophageal perforation, and massive bleeding.

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