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Removable multi-purpose medical airway stent

A multi-purpose, airway technology, applied in the field of medical equipment, can solve problems such as the inability to take out the stent, the sliding displacement of the stent, etc., and achieve the effect of avoiding secondary injury, avoiding sliding displacement, and easy realization

Inactive Publication Date: 2012-10-10
张杰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, as a benign disease, such as benign airway stenosis and tracheoesophageal fistula blockage, the stent needs to be taken out after a period of time, and the granulation embedded at both ends of the stent makes it impossible to take out the stent, and the full covering makes the stent easy to remove. sliding displacement

Method used

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  • Removable multi-purpose medical airway stent
  • Removable multi-purpose medical airway stent
  • Removable multi-purpose medical airway stent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] figure 1 It is a schematic structural diagram of Embodiment 1 of the medical airway stent according to the present invention. figure 2 It is a schematic diagram of the structure of the handle part in Example 1.

[0033] Such as figure 1 As shown, Embodiment 1 discloses a medical airway stent. The hollow cylindrical body 1 is preferably cylindrical (hereinafter referred to as the hollow cylindrical body 1), and is optionally woven from a single nickel-titanium alloy wire. The braided wire is in a spiral direction, which can adapt to the cavities and bends of different diameters.

[0034] V-shaped handles 2 protruding inward are woven at both ends. The handles 2 extend from the hollow cylindrical body 1 and are firm, and will pull out the entire bracket with the traction force, instead of the existing so-called removable bracket. The attached pull cord is easily broken. Of course, the form of the handle 2 is not limited to this, but may be other forms disclosed in the presen...

Embodiment 2

[0039] image 3 It is a schematic structural diagram of Embodiment 2 of the medical airway stent according to the present invention.

[0040] Such as image 3 As shown, the difference between embodiment 2 and embodiment 1 is that one end of the hollow cylindrical body 1 is woven with a V-shaped handle 2 protruding inward, the edge of this end is woven with an arc-shaped neck 3, and a film 4 is wrapped around the hollow The middle section of the cylindrical body 1 has no coating film at both ends. The rest is the same as in Example 1.

[0041] One end is closed, and the other end is not closed in order to increase the friction of the bracket and prevent its displacement.

[0042] For the closure of tracheal-esophageal fistula, the design of the middle section of the stent can be covered with a film, which can play a role in sealing the fistula, while the distal end of the stent is not covered with a film and the arc-shaped closing design is not used to increase the friction between t...

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Abstract

The invention discloses a removable multi-purpose medical airway stent. The airway stent comprises a hollow cylindrical body, and handles are arranged at the ends of the hollow cylindrical body. The handles are arranged at one end or two ends of the hollow cylindrical body. The handles are V-shaped handles protruding to the inner part of the hollow cylindrical body. The handles facilitating recovery extend to the inner part of the body and are arranged convexly; and even if granulation is proliferated, the handles are not embedded into the granulation and are not required to be taken out by instruments. The conventional stent body is improved, and the stent is easy to implement; in operative treatment of benign airway stenosis and airway-esophageal fistula occlusion and later rehabilitation, the stent is prevented from sliding and shifting, and granulation proliferation is retarded; and the stent is convenient to take out, so that the pain of a patient in later take-out operation is greatly reduced, and secondary injury caused by the operation is avoided.

Description

Technical field [0001] The present invention relates to the field of medical equipment, in particular to a removable multi-purpose medical airway stent for treating benign airway stenosis, airway-esophageal fistula occlusion and the like. Background technique [0002] Benign airway stenosis, airway-esophageal fistula and other benign diseases, the stent is placed for a period of time, and the stent needs to be removed after the disease is resolved. [0003] In the prior art, metal stents, especially nickel-titanium memory alloy stents, are usually used in the treatment of esophageal stenosis, tracheal stenosis, biliary tract stenosis, and blood vessel stenosis. These medical stents have achieved good clinical results. The curative effect has been more and more widely used in the past ten years. [0004] However, when these bare stents are used to treat stenosis caused by malignant tumors, because the malignant tumor grows faster, the tumor tissue will pass through the metal mesh to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/90A61L31/02
Inventor 张杰
Owner 张杰
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