Double-layered balloon catheter

A double-layer balloon and catheter technology, applied in catheters and other directions, can solve problems such as troublesome, expensive and economic burden of patients, and large number of stents

Active Publication Date: 2007-10-03
SHANGHAI MICROPORT MEDICAL (GROUP) CO LTD
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  • Abstract
  • Description
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Problems solved by technology

However, the disadvantage of delivering drugs to the lesion through the surface of the balloon is that after the balloon is withdrawn, the drug will be washed away by the blood flow due to the lack of support, and the growth of endothelial cells will take a certain amount of time. In order to completely repair the damaged blood vessels Endothelial, multiple drug-coated balloon catheters must be placed without interruption
This method is not only cumbersome and takes a long time to operate, but also requires multiple catheters for the same lesion, which increases the economic burden on patients
[0003] In addition, when treating diffuse diseased blood vessels, if the method of placing drug stents is used for such lesions, not only the operation is difficult, but also the number of stents to be placed is large, causing an expensive economic burden to the patient

Method used

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Embodiment Construction

[0016] In the following, the invention will be described in more detail with reference to the illustrated embodiments and the accompanying drawings, it being noted that the drawings are not strictly to scale. Particularly for clarity, some dimensions may be exaggerated or reduced. Corresponding or similar parts in the figures are usually denoted by the same parameter symbols.

[0017] As shown in Fig. 1, Fig. 2 and Fig. 5, the catheter body 20 of the double-layer balloon catheter of the present invention includes a distal body 21 and a proximal body 22, and the proximal end of the proximal body 22 is connected to There are connection means 6 for connecting the catheter to the dilation device in a convenient manner. The distal end of the distal body 21 is provided with two balloons—the inner balloon 1 and the outer balloon 2 with micropores 16 on the wall, and the proximal end of the inner balloon 1 is connected to the far end of the inner tube 10. The proximal end of the out...

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Abstract

A dual-layer bag catheter is composed of two ball layers and three cavities. Its internal bag layer is used for expanding blood vessel. Its external bag layer made of unique millipore film is used for delivering the therapeutic genes or medicine to the wall of blood vessel or target organ.

Description

technical field [0001] The invention relates to an angioplasty tool, in particular to a balloon catheter, especially a double-layer balloon catheter. Background technique [0002] A balloon catheter is an endovascular angioplasty tool. Under the guidance of medical imaging equipment, the balloon catheter is inserted into the narrow part of the blood vessel by percutaneous puncture technology, and the balloon is inflated under strict monitoring to expand the narrow part of the blood vessel, thereby restoring the diameter of the lumen and improving blood circulation. flow. However, in 30-50% of patients after angioplasty, irregular vascular endothelial cell damage leads to abnormal proliferation of vascular intima and excessive proliferation of smooth muscle cells, resulting in vascular restenosis. In this regard, metal stents and drug stents have emerged as the times require. The drug stent is coated with a drug that can release slowly on the surface of the metal stent. It...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M25/00
Inventor 李茂全罗七一石秀凤张琳琳张一杨海葛泉波吉美玲
Owner SHANGHAI MICROPORT MEDICAL (GROUP) CO LTD
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