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Implant for treating pulmonary arteriovenous fistula

An arteriovenous fistula and implant technology, applied in the field of medical devices, can solve the problems of easy falling off, large trauma, loss of lung function, etc., and achieve the effect of strong radial support, good embolization effect, and simple structure

Pending Publication Date: 2020-02-28
SHANGHAI ACHIEVA MEDICAL SUZHOU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1) Surgical resection can cause large trauma, high bleeding, partial loss of lung function, and slow recovery of the patient
[0004] 2) Interventional embolization, occlude the patent ductus arteriosus occluder, the occluder is braided, and the waist of the occluder is inserted into the fistula, but the braided occluder has poor radial support and is easy to fall off

Method used

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  • Implant for treating pulmonary arteriovenous fistula
  • Implant for treating pulmonary arteriovenous fistula
  • Implant for treating pulmonary arteriovenous fistula

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Such as Figure 1-3 As shown, an implant for pulmonary arteriovenous fistula, the implant 1 is delivered to the arteriovenous fistula by the delivery system 2, and the fistula opening 3 is blocked; the implant 1 is helically wound by a primary helix Formed, the primary helix is ​​formed by the helical winding of the original wire 1-1; the original wire 1-1 is a platinum-tungsten alloy wire or a stainless steel alloy wire or a medical magnesium alloy wire; The twisted thread 1-2, the anti-untwisted thread 1-2 is a single-strand or double-strand nylon thread or Polypropylene thread, and its two ends are respectively connected to the two ends of the implant 1; the diameter of the original silk 1-1 is 0.04-0.08mm; the diameter of the primary helix is ​​0.22-0.50mm; the diameter of the anti-untwisting wire 1-2 is 0.03-0.8mm; the diameter of the implant 1 is 1mm-10mm; the implant 1 is coated with There are gels.

Embodiment 2

[0021] On the basis of Example 1, the implant 1 is formed by a primary helix wound in a non-helical manner.

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Abstract

The invention relates to an implant for treating pulmonary arteriovenous fistula. The implant is delivered into arteriovenous fistula by a delivery system to block a fistula orifice and formed by winding a primary helix which is formed by spirally winding an original wire, and the original wire is a platinum-tungsten alloy wire or a stainless steel ally wire or a medical magnetism alloy wire. Theimplant is reasonable in design, simple in structure, strong in radial supporting force, less prone to shedding and good in embolic effect.

Description

technical field [0001] The invention relates to a medical device, in particular to an implant for treating pulmonary arteriovenous fistula. Background technique [0002] Pulmonary arteriovenous aneurysm is a congenital vascular malformation in which arteries and veins in the lung communicate directly. During congenital development, capillary anastomoses are maintained between arteriovenous pulmonary circulation, which gradually expands into an arteriovenous fistula. Existing treatments are surgical resection and interventional embolization: [0003] 1) Surgical resection can cause large trauma, high bleeding, partial loss of lung function, and slow recovery of the patient. [0004] 2) Interventional embolization, occlude the patent ductus arteriosus occluder, the occluder is braided, and the waist of the occluder is inserted into the fistula, but the braided occluder has poor radial support and is easy to fall off . Contents of the invention [0005] The invention prov...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/12
CPCA61B17/12031A61B17/12109A61B17/12159A61B17/1214A61B17/1215
Inventor 张芳芳陈剑锋王军倪豪张一叶萍
Owner SHANGHAI ACHIEVA MEDICAL SUZHOU CO LTD
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