Placing and recovering device of non-memory alloy esophageal stent

Abstract

The invention provides a placing and recovering device of a non-memory alloy esophageal stent. The placing and recovering device of the non-memory alloy esophageal stent structurally comprises an outer sleeve, an inner sleeve, a recovering drag hook and the non-memory alloy esophageal stent. A drag hook handle is arranged at the rear end of the recovering drag hook, a hook head is arranged at the front end of the recovering drag hook, the hook head portion is inserted into the inner sleeve in a penetrating mode, and the inner sleeve is inserted into the outer sleeve. At least one opening is formed in the front end of the inner sleeve, at least one slot hole is formed in the middle of the inner sleeve, and at least three open seams are formed in the front end of the outer sleeve. The rear end of the outer sleeve and the rear end of the inner sleeve are respectively provided with a horn-shaped handle, and the upper end and the lower end of the non-memory alloy esophageal stent are respectively provided with an annular metallization tightening string. One annular metallization tightening string penetrates through the slot hole in the middle of the inner sleeve and is hooked together with the hook head, the annular metallization tightening string at the lower end of the non-memory alloy esophageal stent is hooked together with the opening in the front end of the inner sleeve, and the non-memory alloy esophageal stent is made to cover the front end of the inner sleeve through stretching of the recovering drag hook. The placing and recovering device of the non-memory alloy esophageal stent has the advantages that the structure is simple, placing and recovering can both be achieved, and a common stainless steel non-memory alloy esophageal stent can be used for replacing a traditional expensive nickel-titanium memory alloy esophageal stent.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a non-memory alloy esophageal stent placement recovery device. Background technique [0002] If the human esophagus becomes cancerous, it will block the esophagus, causing the patient to be unable to swallow food and die of starvation. In order to prolong the life of the patient, the existing technology is to place a nickel-titanium memory alloy non-memory alloy stent in the esophageal lesion through a non-memory alloy stent implanter. The alloy esophageal stent stretches the esophagus and expands the lumen diameter of the diseased esophagus to facilitate the passage of food. The placement of this non-memory alloy esophageal stent is performed with the help of a gastroscope, but the problem is that the nickel-titanium memory alloy After the placement of non-memory alloy esophageal stents, the cancerous part of the esophagus of many patients blocked the esophagus, resultin...

AI Technical Summary

Problems solved by technology

[0002] If the human esophagus becomes cancerous, it will block the esophagus, causing the patient to be unable to swallow food and die of starvation. In order to prolong the life of the patient, the existing technology is to place a nickel-titanium memory alloy non-memory alloy stent in the esophageal lesion through a non-memory alloy stent implanter. The alloy esophageal stent stretches the esophagus and expands the lumen diameter of the diseased esophagus to facilitate the passage of food. The placement of this non-memory alloy esophageal stent is performed with the help of a gastroscope, but the problem is that the nickel-titanium memory alloy After the placement of non-memory alloy esophageal stents, the cancerous part of the esophagus of many patients blocked the esophagus, resulting in difficulty in swallowing food. X-ray examination revealed that the nickel-titanium memory alloy non-memory alloy esophageal stent was pushed due to esophageal peristalsis and swallowing coarse food. In the stomach, the solution of the existing technology is to use a special cutting instrument to cut the nickel-titanium memory alloy non-memory alloy esophageal stent bit by bit with the help of a gastroscope, and then take it out piece by piece through biopsy forceps. Then a new nickel-titanium memory alloy non-memory alloy esophageal stent is placed. The operation is very complicated and the patient is very painful. The long-term operation increases the labor intensity of the doctor and increases the treatment cost of the patient. There is no good solution yet.

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