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Esophageal tracheal fistula occlusion stent and inserter thereof and inserting method thereof

A technique for the trachea and esophagus, applied in the field of minimally invasive surgery, can solve the problems of easy damage to surrounding tissues, long pain time, and affecting rescue channels, etc., and achieve the effect of reducing the risk of tissue necrosis, low risk of ischemic necrosis, and improving the quality of life

Pending Publication Date: 2019-05-17
JIANGSU PROVINCE HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] (1) Even if the proximal end and the distal end of the occluder have caps or are concave inward, once the patient coughs and other actions, the occluder will be pear-shaped, which will easily damage the surrounding tissues, causing massive bleeding and sudden death
[0004] (2) The occluder is susceptible to corrosion, and secondly, the occluder as a foreign body can cause an inflammatory reaction, which cannot be resisted by a general occluder
[0005] (3) There is no recovery device, once inserted, it cannot be taken out by conservative medical treatment
[0006] (4) The general occluder is placed through the trachea, which affects the rescue channel, and cannot be placed under the direct vision of the doctor at any time, which has certain risks
[0007] (5) The treatment method of using traditional stents to expand the circumference of the esophagus seriously affects the daily life of the patient, and the pain lasts for a long time, which affects the quality of life of the patient
[0008] (6) The weight of the occluder, the pressure of the occluder on the surrounding tissue, causing ischemic necrosis or even the occluder falling off, blocking the airway and causing death

Method used

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  • Esophageal tracheal fistula occlusion stent and inserter thereof and inserting method thereof
  • Esophageal tracheal fistula occlusion stent and inserter thereof and inserting method thereof
  • Esophageal tracheal fistula occlusion stent and inserter thereof and inserting method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0059] Such as Figure 1 to Figure 4 , an esophagotracheal fistula closure bracket, characterized in that it comprises an umbrella-shaped bracket (1), a mushroom-shaped bracket (2) and an intermediate bracket (3), and the umbrella-shaped bracket (1) and the mushroom-shaped bracket (2) pass through The intermediate support (3) is connected as a whole, and the outer surfaces of the umbrella-shaped support (1), the mushroom-shaped support (2) and the intermediate support (3) are all provided with coatings; the intermediate support (3) is a tubular structure, and its two The end is sealed by covering the film, the umbrella-shaped support (1) is expanded into an umbrella shape, and the mushroom-shaped support (2) is expanded into a mushroom shape.

[0060] The umbrella-shaped support (1) comprises an umbrella-shaped support skeleton (101) and an umbrella-shaped support film (100), the umbrella-shaped support skeleton (101) is a dispersed structure or a braided structure, and the um...

Embodiment 2

[0070] Such as Figure 5 , Figure 6 , a stent for esophagotracheal fistula closure, the metal wire adopts a braided structure and shape different from that of Example 1, and is characterized in that it includes an umbrella-shaped stent (1), a mushroom-shaped stent (2) and an intermediate stent (3), the umbrella-shaped The bracket (1) and the mushroom-shaped bracket (2) are connected as a whole through the intermediate bracket (3), and the outer surfaces of the umbrella-shaped bracket (1), the mushroom-shaped bracket (2) and the intermediate bracket (3) are all equipped with Covering film; the middle support (3) is a tubular structure, the two ends of which are sealed by covering the film, the umbrella-shaped support (1) is expanded into an umbrella shape, and the mushroom-shaped support (2) is expanded into a mushroom shape.

Embodiment 3

[0072] Such as Figure 7 It is a schematic cross-sectional structure diagram of the stent of the present invention in the inserter; the whole stent is compressed and folded in the tubular structure of the inserter. Delivered to the targeted fistula area.

[0073] Such as Figure 8 , is a schematic cross-sectional structure diagram of the stent of the present invention in a partially deployed state partially located in the inserter. One end of the stent on the esophagus side or the trachea side is sent out by the implanter, and unfolded under its own elasticity and memory tension. Then, during the retraction process of the implanter, the other end of the stent is sent out and released to complete the closure of the internal fistula.

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Abstract

Provided is an esophageal tracheal fistula occlusion stent inserter. Due to the fact that the distal and proximal ends of an esophageal tracheal fistula occlusion stent are of single-layer structures,the weight is lighter compared with a vascular occluder disc-shaped structure, the risk of tissue necrosis around a fistula is reduced, the esophageal end is larger than the tracheal end, and the risk of the occluder falling into trachea is further reduced.

Description

technical field [0001] The invention relates to the field of minimally invasive technology, in particular to an esophagotracheal fistula blocking support, an inserter and an inserting method thereof. Background technique [0002] In 2006, Paulo RS et al. reported the first case of an atrial septal occluder used to occlude an esophagotracheal fistula with a size of 5 mm, and was discharged 5 days after the operation. Blocking from the trachea through the catheter has the advantages of less trauma, easy operation and remarkable effect. Subsequent umbrella devices and other similar mechanical closure devices have been developed extensively with ASD devices to occlude esophagotracheal fistulas, but the following disadvantages remain: [0003] (1) Even if the proximal and distal ends of the occluder have caps or are concave inward, once the patient coughs and other actions, the occluder will be pear-shaped, which will easily damage the surrounding tissues, causing massive bleedi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/12A61F2/04A61F2/966
CPCA61F2/966A61F2/82A61F2230/0093A61B17/0057A61B2017/00575A61B2017/00606A61B2017/00623A61B2017/00871A61B2017/00836A61B2017/00889A61B2017/00938A61B2017/00818A61F2/203A61B17/12104A61F2230/0071
Inventor 张国新韦建宇桑怀鸣彭磊党旖旎
Owner JIANGSU PROVINCE HOSPITAL
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