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Esophageal stent fixation wire auxiliary structure

A technology of stent fixing and auxiliary structure, which is applied in the field of medical devices, can solve problems such as nasal mucosa, ear and nose flank damage, and achieve the effect of reducing the discomfort of tightening, alleviating the feeling of tightening, and enhancing the contact area

Active Publication Date: 2020-07-24
THE FIRST AFFILIATED HOSPITAL OF ARMY MEDICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to provide an esophageal stent fixing wire auxiliary structure to solve the problem that the suspension wire will tighten the nasal mucosa, ears and nose flanks, and easily cause damage to the nasal mucosa, ears and nose flanks

Method used

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  • Esophageal stent fixation wire auxiliary structure
  • Esophageal stent fixation wire auxiliary structure
  • Esophageal stent fixation wire auxiliary structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Such as figure 1 and figure 2 As shown, the auxiliary structure for fixing the esophagus stent includes a buffer tube 1, one or two auxiliary wires 3 and a ring sleeve 4. Both ends stick out.

[0038] The buffer tube 1 is made of silica gel, and the length of the buffer tube 1 extending into the human body from the nostril is 10-25 cm. The two ends of the buffer tube 1 are respectively a fixed end 14 and a connecting end 15 for extending into the patient's body. The connecting end 15 of the buffer tube 1 is at the pharyngeal opening 6 of the patient's Eustachian tube, or continues to extend into the patient's body, but avoids the patient's oropharynx. The inner diameter of the buffer tube 1 is 0.2-0.5mm. The outer diameter of the annular sleeve 4 is smaller than the inner diameter of a single nare of the patient.

[0039] Such as figure 2, the inner side wall of the annular sleeve 4 is provided with a cutter capable of cutting the buffer tube 1, and the cutter i...

Embodiment 2

[0051] The difference between this embodiment and embodiment 1 is that, as Figure 5 and Figure 6 As shown, it also includes a radial partition block 2, which is located on the side of the buffer tube 1 close to the fixed end 14 (when in use, the radial partition block 2 is always outside the patient's body), and the inner wall of the buffer tube 1 is opened with Two first engagement grooves 11 arranged opposite to each other along the radial direction of the buffer tube 1, the two ends of the radial partition block 2 are respectively inserted into the two first engagement grooves 11, the free end of the blade 41 is separated from the radial One end of the block 2 inserted into the first clamping groove 11 is offset; the radial partition block 2 divides the buffer tube 1 into a first chamber 12 and a second chamber 13. When there is one auxiliary wire 3, the auxiliary wire 3 extends Into and through in the first chamber 12 or the second chamber 13, when there are two auxilia...

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Abstract

The invention belongs to the technical field of medical instruments and specifically discloses an auxiliary structure of a fixing line of an esophageal stent. The auxiliary structure comprises a buffer pipe, an annular sleeve and an auxiliary line arranged in the buffer pipe; a cutter capable of cutting the buffer pipe is arranged on an inner side wall of the annular sleeve; the annular sleeve sleeves and is in sliding connection with the exterior of the buffer pipe; two support blocks capable of limiting the movement of the annular sleeve toward nostrils are fixedly connected with an outer side wall of the annular sleeve. The auxiliary structure is capable of relieving a tightening effect of a suspension line on mucous membrane of nasal cavity, ears and nose flanks and is capable of relieving and even avoiding damage to mucous membrane of nasal cavity, ears and nose flanks.

Description

technical field [0001] The application of the present invention belongs to the technical field of medical devices, and specifically discloses an auxiliary structure for fixing wires of an esophageal stent. Background technique [0002] An esophageal stent refers to a tubular structure that is implanted into the human esophagus through a conveyor under the guidance of an endoscope or X-ray through a medical operation to expand and support the esophagus for a long time. [0003] Esophageal stents are suitable for esophageal strictures caused by malignant diseases that are not suitable for surgery, esophageal-tracheal (or bronchial) flaccidity caused by various reasons, and intractable benign esophageal strictures. After being implanted in the human esophagus, the esophageal stent can support the originally narrow esophagus and allow the patient to eat normally, thus effectively prolonging the patient's survival time and improving the patient's quality of life. [0004] The ex...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/82
CPCA61F2/82A61F2220/0008
Inventor 杨梅吴宏博刘俐
Owner THE FIRST AFFILIATED HOSPITAL OF ARMY MEDICAL UNIV