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Sacculus dilatation catheter

A technology for dilating catheters and balloons, which is applied in the direction of balloon catheters, dilators, stents, etc., and can solve problems such as insufficient push performance, inability to complete arterial interventional surgery, complex and diverse pathology, etc.

Active Publication Date: 2011-08-03
SHANGHAI VASOLUTIONS MEDTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the pathology of patients with atherosclerosis is complex and diverse
Through the research on the prior art, the inventor found that the existing balloon dilatation catheter has insufficient pushing performance when performing arterial interventional surgery, especially when treating some tortuous, diffusely calcified, or even long-term occluded blood vessels. , so that arterial interventional surgery cannot be completed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] figure 1 It is a schematic structural diagram of a balloon dilatation catheter provided according to an embodiment of the present invention.

[0030] Such as figure 1 As shown in FIG. 1 , it shows a balloon dilatation catheter, which can be used especially for lower extremity blood vessel dilation surgery. The balloon dilatation catheter includes a balloon 1 , a push rod 2 , an inner tube 3 and a connecting device 4 . In the balloon dilation catheter, the push rod 2 is a hollow structure, its distal end is fixed to the balloon 1, and its proximal end is fixed to the connecting device 4; the inner tube 3 is also a hollow structure, which runs through the balloon 1 and the The inner cavity of the push rod 2, and the distal end of the inner tube 3 passes through the balloon 1 and is fixed with the balloon 1; and the connecting device 4 has a first interface 4-1 and a second interface 4-2. In the connecting device 4, the first interface 4-1 is connected with the proximal...

Embodiment 2

[0037] image 3 It is a schematic cross-sectional structure diagram of another push rod of a balloon dilatation catheter according to another embodiment of the present invention, which shows another braided wire reinforcing tube structure.

[0038] In this embodiment, the push rod 2 is formed by a braided wire reinforced tube. The braided wire reinforced tube only comprises two layers, namely: an outer layer 11' and a braided wire reinforced layer 22'. The braided wire reinforcement layer 22' is laser cut from a metal pipe, specifically, the braided wire reinforcement layer 22' is laser cut from a metal pipe so that the cut braided wire extends helically along the axial direction of the reinforced pipe to form a helical structure ; Then outside the braided wire reinforced layer 22', the outer layer 11' is made by coating extrusion method, so as to make the braided wire reinforced tube to form the push rod 2.

[0039] In addition, the structures and connections of other parts...

Embodiment 3

[0041] Figure 4 It is a cross-sectional schematic diagram of yet another push rod / inner tube of a balloon dilatation catheter according to another embodiment of the present invention, which shows yet another braided wire reinforcing tube structure.

[0042] Such as Figure 4 As shown, the push rod 2 or the inner tube 3 is formed by a braided wire reinforced tube, and the braided wire reinforced tube includes an inner layer 33 ", an outer layer 11 " and a braided wire reinforced layer 22 ". To make the braided wire reinforced tube, first Extrude the inner layer 33 " with an extruder; then on the outer circular surface of the inner layer 33 " that has been shaped, use a braiding machine to braid the braided wire in a manner that is substantially parallel to the axial and radial arrangement of the reinforcing tube. Mesh shape, thereby forming the braided wire reinforcement layer 22", that is, the braided mesh reinforcement layer is formed; then, on the outside of the braided wi...

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Abstract

The invention provides a sacculus dilatation catheter for blood vessel dilatation surgery. The sacculus dilatation catheter comprises a sacculus, a push rod, an inner tube and a connecting device, wherein the push rod is positioned between the sacculus and the connecting device and connects the sacculus and the connecting device, and the inner tube extends and passes through the internal spaces of the sacculus and the push rod. The sacculus dilatation catheter is characterized in that: at least one of the push rod and the inner tube is made of weaving silk reinforcing tube. The sacculus dilatation catheter can smoothly pass through circuitous, diffuse calcification and even long-segment occlusive blood vessels in vascular disease interventional therapy surgery.

Description

technical field [0001] The invention relates to a balloon dilatation catheter. Background technique [0002] With the improvement of the overall living standard of our people and the aging population, the incidence of atherosclerosis is getting higher and higher. Atherosclerosis is a disease involving the arterial system of the whole body, which will directly endanger the life safety of patients. [0003] At present, there are three main ways to treat atherosclerosis: conservative drug treatment, surgery and interventional therapy. Conservative drug treatment has the disadvantages of long cycle and poor curative effect. Traditional surgical operations have the disadvantages of large trauma, many complications, and long hospitalization period, which are unbearable for most patients. Interventional surgery (arterial balloon dilatation surgery and stent implantation) is a diagnosis and treatment operation performed by using a series of interventional instruments and material...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M29/02A61M25/10A61F2/958
Inventor 赵振心李孝秀郑忠伟谢志永罗七一
Owner SHANGHAI VASOLUTIONS MEDTECH CO LTD
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