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Self-service esophageal stenosis dilator with gradually-increased expanding diameter and method

A self-service technology for esophageal stenosis, applied in the direction of dilators, catheters, balloon catheters, etc., can solve the problems of inconvenient operation, lack of esophageal stenosis positioning device, complex structure, etc., and achieve the effect of easy access

Active Publication Date: 2021-06-25
WEST CHINA HOSPITAL SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The operation of esophageal dilation is relatively simple. If all patients undergo esophageal dilation in the hospital, it will not only waste precious medical resources, but also bring a heavy medical burden to patients.
[0004] The traditional esophageal dilator expands the stenosis by tearing the mucous membrane or muscle layer of the stenosis. The structure is complex and the operation is inconvenient. The traditional esophageal dilator requires the endoscopist to locate the esophageal stenosis under the gastroscope for dilation , the lack of necessary esophageal stricture positioning device, it is difficult for personnel without medical experience to find the esophageal stricture for dilation, and it is not suitable for patients to perform esophageal dilation treatment at home

Method used

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  • Self-service esophageal stenosis dilator with gradually-increased expanding diameter and method
  • Self-service esophageal stenosis dilator with gradually-increased expanding diameter and method
  • Self-service esophageal stenosis dilator with gradually-increased expanding diameter and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Such as Figure 1-6 As shown, the present invention not only provides a self-service dilator for esophageal stenosis with gradually increased dilating diameter, including: dilation mechanism, syringe 4 and air valve mechanism, including air guide tube 101, positioning balloon 102 and expansion balloon 103, the guide A first through hole 104 and a second through hole 105 are axially provided in the trachea 101, and a first vent 106 and a second vent 107 are provided on the side wall of the air guide tube 101. The positioning balloon 102 and the expansion balloon 103 are arranged on the guide One end of the trachea 101, and the positioning balloon 102 is closer to the end of the airway tube 101 than the dilation balloon 103, the positioning balloon 102 and the dilation balloon 103 are close to each other and do not communicate with each other, and one end of the first through hole 104 passes through the first ventilation port 106 and the The positioning air bag 102 is com...

Embodiment 2

[0042] On the basis of Embodiment 1, in order to facilitate the control of the inflated volume of the positioning airbag 102 and the expansion airbag 103, and to facilitate the discharge of the air or saline in the positioning airbag 102 and the expansion airbag 103.

[0043] Such as figure 2 As shown, wherein, the controllable one-way valve 3 includes a third through hole 303 and a piston 304, the air inlet 301 is arranged at one end of the controllable one-way valve 3, the air inlet 301 and the third through hole 303 is connected at one end, and the third through hole 303 is a special-shaped hole. The piston 304 is slidingly connected with the inner wall of the third through hole 303. The piston 304 can block the communication between the air inlet 301 and the third through hole 303. The third through hole 303 A spring 305 is arranged inside, and the inner wall of the other end of the third through hole 303 is connected with an air outlet interface 306, the air outlet 302 i...

Embodiment 3

[0047] On the basis of Embodiment 1, in order to ensure that the pressure exerted by the positioning balloon 102 or the expansion balloon 103 on the esophageal wall is within the maximum expansion pressure that the esophageal wall can bear.

[0048] Such as figure 2 As shown, wherein, the housing 201 is provided with an observation hole 205, the relief valve 204 is an adjustable pressure relief valve 204, and the return port T of the relief valve 204 communicates with the observation hole 205 through a hose 206 .

[0049] Adjust the safety pressure of the overflow valve 204 to within the maximum expansion pressure that the esophageal wall can withstand, inject air or physiological saline into the positioning air bag 102 or the expansion air bag 103 with the syringe 4, and then inflate the positioning air bag 102 or the expansion air bag 103 Pressed by the esophageal wall, the pressure in the positioning balloon 102 or the expansion balloon 103 increases, and when the pressur...

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Abstract

The invention discloses a self-service esophageal stenosis dilator capable of gradually increasing the expanding diameter and a method, and belongs to the technical field of medical instruments. The self-service esophageal stenosis dilator with the gradually-increased expanding diameter comprises a dilation mechanism which comprises an air guide pipe, a positioning air bag and a dilation air bag, wherein the air guide pipe is provided with a first through hole, a second through hole, a first air vent and a second air vent, one end of the first through hole is communicated with the positioning air bag through the first air vent, the other end of the first through hole is communicated with the dilation air bag through the second air vent, and one end of the second through hole is communicated with the expansion airbag through the second vent; an injector which is provided with scales; and an air valve mechanism which is used for switching the injection port to be communicated with the first through hole or the second through hole. By using the esophageal dilator provided by the invention, the stenosis of the esophagus can be easily and accurately positioned. The esophageal dilator can ensure that the pressure applied by the air bag to the esophageal wall is within the maximum dilation pressure capable of being borne by the esophageal wall.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a self-service dilator for esophageal stricture with gradually increasing diameter and a method thereof. Background technique [0002] For patients with early esophageal cancer, endoscopic submucosal dissection (ESD) is currently the most commonly used treatment. Endoscopic submucosal dissection (ESD) is a standard minimally invasive treatment. During the healing process of the postoperative wound, scars are gradually formed, and the stretching of the scars leads to esophageal stenosis. The normal esophageal diameter is about 3.0-3.5 cm. After the esophageal stenosis occurs, the stenotic aperture can be only a few millimeters wide, and the patient has severe dysphagia; for Patients with a lesion area greater than or equal to 3 / 4 weeks have a high risk of esophageal stenosis after ESD. The usual treatment to solve the problem of esophageal stenosis is esophageal dilation w...

Claims

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Application Information

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IPC IPC(8): A61M29/02A61M25/10
CPCA61M29/00A61M25/1011A61M25/10182
Inventor 罗斌阳罗蓉何艳李玉祁蓓龙艺刘与之吕修和邓凯王竹
Owner WEST CHINA HOSPITAL SICHUAN UNIV
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