Vesicle-type serial expansion balloon for valves

A balloon and vesicle technology, which is applied to heart valve, valve annulus, balloon-shaped catheter and other directions, can solve the problems of high process precision, complex overall process and high manufacturing cost, and achieves low manufacturing cost, simple manufacturing process, Easy-to-use effects

Pending Publication Date: 2020-10-16
KOKA NANTONG LIFESCIENCES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The proximal and distal ends of the balloon in the prior art need to maintain non-compliance, and the middle needs to maintain semi-compliance. If different materials are used to make different parts of the integrated balloon, the connection method between different materials should be considered ; If the same material is used to make it, it is necessary to perform different treatments on different parts to produce different performances. The overall process is complex, with high requirements for process precision and high manufacturing costs.

Method used

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  • Vesicle-type serial expansion balloon for valves
  • Vesicle-type serial expansion balloon for valves
  • Vesicle-type serial expansion balloon for valves

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Such as Figure 1-3 As shown, the expansion balloon for the vesicular series valve of this embodiment includes a catheter and split balloons arranged in sequence along the catheter. Each balloon is not connected to each other and has an independent lumen. The balloon can be directly made of different materials to meet the material compliance requirements of different positions, and the process is simplified compared with the one-piece balloon.

[0029] Specifically, the split balloon includes a proximal balloon 103, an intermediate balloon 102, and a distal balloon 101. The proximal balloon 103 and the distal balloon 101 are made of non-compliant materials, and the non-compliant materials can be PET, PTFE, polyimide, polymer or fibrous materials can also be made relatively non-compliant by electron beam, chemical or other cross-linking methods using compliant or semi-compliant materials. The middle balloon 102 is made of a semi-compliant material, which can be nylon, r...

Embodiment 2

[0040] The dilatation balloon for the vesicular series valve of this embodiment differs from that of Embodiment 1 in that:

[0041] Such as Figure 4-6 As shown, the internal structure of the central catheter 104 in this embodiment adopts a rotary valve structure, and the interior of the proximal balloon 103, the distal balloon 101, and the middle balloon 102 communicate with the lumen 111 of the central catheter 104 through valve ports, respectively. The rotary valve 112 includes an input end and an output end. The input end is connected to an external fluid delivery device. By rotating the rotary valve 112, when the output end coincides with the valve port, the output end communicates with the valve port; when the output end does not coincide with the valve port , the output end is not connected to the valve port. That is, by rotating the inner tube 110 at the output end of the rotary valve 112, each valve port is aligned with the valve port on the central catheter 104, and...

Embodiment 3

[0047] The dilatation balloon for the vesicular series valve of this embodiment differs from that of Embodiment 1 in that:

[0048] Such as Figure 7 As shown, the split balloon of this embodiment adopts the method of nesting additional balloons in the balloon to form a double-layer balloon. At the same time, the inner and outer double-layer balloons are respectively equipped with separate capillaries 105 for partial pressure control. Taking the distal balloon 101 as an example, a distal inner balloon 101a is nested inside, and the distal balloon 101 and the distal inner balloon 101a The internal pressure is controlled through different capillaries 105 respectively. The inner balloon has semi-compliance, and its maximum diameter is slightly larger than that of the outer balloon under fully expanded conditions, such as under a pressure of 1-3 atm. Compared with Embodiment 1, increasing the number of layers of the balloon can increase the pressure resistance inside a single ba...

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PUM

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Abstract

The present invention relates to the technical field of medical device implants, and in particular to a vesicle-type serial expansion balloon for a valve. The expansion balloon comprises a central catheter and multiple split balloons serially connected in sequence along the axis of the central catheter, and the insides of the multiple split balloons respectively communicate with the cavity of thecentral catheter; and the central catheter is connected with an external fluid delivery device, and the multiple split balloons are inflated or decompressed through the external fluid delivery device.The vesicle-type serial expansion balloon for the valve has a simple manufacturing process and low manufacturing cost, the structure can be used to successfully locate the position of an aorta, and further increase the internal pressure of the balloon to expand the deformed or narrowed valve and destroy valve calcification to restore the elasticity of the valve; and the original valve is pre-expanded to prepare for the replacement of an artificial valve, at the same time, the matching degree of compliance is extremely high, adverse effects caused by balloon over-expansion and balloon slidingare reduced, and the possibility of occurrence of complications or injuries can be reduced, and the expansion balloon is convenient to operate and can increase the success rate of surgery.

Description

technical field [0001] The invention relates to the technical field of medical device implants, in particular to an expansion balloon for a vesicular series valve. Background technique [0002] Aortic stenosis is a common cause of acquired heart disease. A large part of the root cause is calcification and stiffness of the valves, which restrict their ability to open and close, resulting in obstruction of the antegrade flow of blood through the heart. When valve leaflet sclerosis becomes severe, invasive measures such as aortic dilation or valve replacement are often required for treatment. The existing technology is mainly based on catheter-based minimally invasive balloon valvular dilation to expand the valve leaflets. The principle is that during the treatment process, a balloon catheter is inserted into a vein or artery and pushed until the heart valve that needs to be treated. Fluid is injected into the balloon to inflate the valve to expand the opening of the diseased...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/24A61M25/10
CPCA61F2/2433A61F2/2442A61F2/2466A61M25/1002A61M25/1011A61M25/1018A61M2025/105A61M2025/1075A61M2025/1079A61M2025/1086
Inventor 潘嘉虬陈大凯
Owner KOKA NANTONG LIFESCIENCES CO LTD
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