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Dilatation balloon and balloon dilatation catheter

A balloon and catheter technology, applied in balloon catheters, heart valves, etc., can solve the problems of easy formation of paravalvular leakage and easy movement of catheters.

Pending Publication Date: 2022-07-01
SHANGHAI MICROPORT CARDIOFLOW MEDTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a dilatation balloon and a balloon dilation catheter to solve the problems that the existing balloon dilation catheter is easy to move and easily form paravalvular leakage.

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  • Dilatation balloon and balloon dilatation catheter
  • Dilatation balloon and balloon dilatation catheter
  • Dilatation balloon and balloon dilatation catheter

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Embodiment Construction

[0033] In order to make the objects, advantages and features of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the accompanying drawings are all in a very simplified form and are not drawn to scale, and are only used to facilitate and clearly assist the purpose of explaining the embodiments of the present invention. Furthermore, the structures shown in the drawings are often part of the actual structure. In particular, each drawing needs to show different emphases, and sometimes different scales are used.

[0034]As used herein, the singular forms "a," "an," and "the" include plural referents, the term "or" is generally employed in its sense including "and / or", and the term "a number" It is usually used in the sense including "at least one", the term "at least two" is usually used in the sense including "two or more", in addition, the t...

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Abstract

The invention provides a dilatation balloon and a balloon dilatation catheter. The dilatation balloon comprises an outer balloon and an inner balloon, the outer balloon is arranged outside the inner balloon in a sleeving mode, the inner balloon expands when being filled with filling fluid and drives the outer balloon to expand, and the inner balloon has a first preset state in the expansion process; after the inner balloon is expanded to the first preset state and reaches a critical state, the filling fluid in the inner balloon flows into the outer balloon and fills the outer balloon. In this way, before the inner balloon is expanded to the critical state, the expansion form of the expansion balloon is limited through the first pre-shaping state, and the problem that the balloon is prone to moving is solved; and when the inner balloon reaches a critical state, the filling fluid in the inner balloon flows into the outer balloon and fills the outer balloon, so that the limitation of the dilation form of the dilation balloon is relieved, the dilation balloon can dilate along with the form of the outer balloon, and the formation of perivalvular leakage is reduced.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an expansion balloon and a balloon expansion catheter. Background technique [0002] Aortic stenosis (AS) is one of the most common valvular heart diseases in valvular heart disease, which seriously endangers human health. For patients with severe aortic valve stenosis, surgical aortic valve replacement used to be the only treatment that could prolong their lives, but elderly patients are often contraindicated for surgery because of their advanced age, frail constitution, severe disease, or other diseases. A growing number of clinical results confirm that interventional therapy is an effective treatment for these high-risk patients or for whom conventional thoracotomy is too risky. Existing interventional approaches include balloon aortic valvuloplasty (BAV) and transcatheter aortic valve implantation (TAVI). Balloon dilatation catheters are required in both balloon aor...

Claims

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Application Information

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IPC IPC(8): A61M25/10A61F2/24
CPCA61M25/1011A61M25/0026A61F2/2433A61M2025/1013
Inventor 岳斌赵若衡姚映忠张靖宜常兆华
Owner SHANGHAI MICROPORT CARDIOFLOW MEDTECH CO LTD
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