Bronchial fistula closure device

A technology of bronchial fistula and equipment, which is applied in the field of bronchial fistula closure equipment, to achieve the effect of accelerating endothelialization, less tissue stimulation, and promoting endothelial adhesion

Active Publication Date: 2020-06-09
SHANGHAI SHAPE MEMORY ALLOY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a bronchial fistula sealing device with large radial support force, which can completely seal the fistula and avoid displacement and falling off. How to treat patients with pleural fistula

Method used

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  • Bronchial fistula closure device
  • Bronchial fistula closure device
  • Bronchial fistula closure device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The present invention is a bronchial fistula sealing device, such as figure 1 As shown, it includes four parts: a metal grid frame 1 woven with nickel-titanium alloy wires, a medical suture, a polymer elastic film, and a tightening thread. The two ligature ends of the metal grid frame 1 are kneaded and fixed by stainless steel sleeves 2, and the metal grid frame 1 is made as follows: figure 1 As shown in the "I"-shaped structure, 2-5 layers of polymer elastic films are sewn with medical sutures in the metal grid frame 1 . The metal grid frame 1 includes a large disk surface 4 and a small disk surface 5, and the large disk surface 4 and the small disk surface 5 are connected by a waist 3.

[0029] The tightening thread is passed through the metal grid 1 and the polymer elastic film by sutures, and is knotted with stainless steel sleeves 2 at both ends of the metal grid 1 to form a circular loop.

[0030] The large plate 4 is on the outside of the thorax / body, and the s...

Embodiment 2

[0042] Such as figure 2 As shown, there is a layering phenomenon on the edge of the large disk 4, that is, the thickness of the disk is increased, which can prevent the edge of the disk from wearing the tissue around the fistula and reduce the stimulation to the human body. At the same time, the thickened disk surface (that is, the disk surface of the large disk surface 4) can be laminated on the inner side of the fistula opening in steps to further ensure the sealing performance of the blockage.

[0043] Others are the same as in Example 1.

Embodiment 3

[0045] Such as image 3 As shown, the present invention is compounded and strengthened by inner and outer double-layer nets, and the inner net is woven by thicker nickel-titanium wire, that is, the nickel-titanium wire of the inner net is thicker than the nickel-titanium wire of the waist 3, and its shape is a two-end Concave cylindrical shape. In this embodiment, the outer mesh (that is, the nickel-titanium wire woven into the metal grid 1) is relatively soft and less irritating to the surrounding tissue of the fistula, and the inner mesh is hard to ensure the radial support force of the occlusion device at the waist.

[0046] At the same time, the shape memory retraction of the inner mesh also helps to close and fix the two ends of the occlusion device, realizing the “drinking glass” shape on both sides of the occlusion, while further enhancing the radial support force of the waist 3 and the relationship between the disk surface and the surrounding tissues of the present inv...

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Abstract

The invention discloses a bronchus orificium fistulae blocking apparatus. The bronchus orificium fistulae blocking apparatus is characterized by comprising a metal net rack woven from nickel-titaniumwires, the two binding ends of the metal net rack are respectively provided with stainless steel sleeves, the metal net rack is an H-shaped structure, 2-5 layers of macromolecule elastic film are seamed in the metal net rack, the metal net rack comprises a big plate surface and a small plate surface, the big plate surface and the small plate surface are connected by a waist, the big plate surfaceand the small plate surface are both close to the waist, and the stainless steel sleeves at the two ends of the metal net rack are concaved into the metal net rack. According to the bronchus orificiumfistulae blocking apparatus, the radial support force is large enough, it is ensured that an orificium fistulae can be completely blocked, residual pores do not exist, and the achievement ratio of operation is ensured; the position of the axis is tied with fixing lines, the two binding ends of a blocking device are pulled to be close and fixed to achieve that the two blocking sides are in a reverse wine glass shape, the radial support force of the waist of the apparatus and the binding force between the plate surfaces and tissue periphery are enhanced, and the displacement and detachment of the blocking device are avoided.

Description

technical field [0001] The invention relates to a bronchial fistula sealing device, which belongs to the technical field of medical devices. Background technique [0002] A bronchopleural fistula is an abnormal channel formed between the bronchi and the pleura. Can be caused by a variety of reasons, such as tuberculous empyema, lobar pneumonia, lung abscess and postoperative infection. It is formed because the pus of chronic empyema corrodes the adjacent lung tissue and then penetrates the bronchi, or because the lung lesion directly invades the chest cavity or ruptures to form a fistula in the pleural cavity, or it is also caused by thoracentesis or surgical resection of the abscess infection. Pus can be coughed up from the bronchi, and in severe cases, a large amount of pus can be sucked into the bronchi, causing the patient to suffocate to death. [0003] When modern medicine treats the disease, after the complications are effectively controlled, the technique of inject...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/12
CPCA61B17/12031A61B17/12104A61B17/12145A61B17/1215
Inventor 谢博雄李博杨永森陈娟曾凡艳曹维拯张红梅耿聪颖陈韵景蒲忠杰
Owner SHANGHAI SHAPE MEMORY ALLOY
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