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balloon catheter

A balloon catheter and balloon technology, which is applied to balloon catheters, catheters, pretreated surfaces, etc., can solve the problems of poor traversal performance, easy to damage blood vessels, etc., to improve surface smoothness, reduce friction, reduce The effect of decompression time

Active Publication Date: 2021-02-26
BIOTYX MEDICAL (SHENZHEN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Balloon catheters in the prior art generally use a metal tube with a larger inner diameter to increase the liquid flow through the interface of the metal tube in order to ensure a suitable pressure relief time, which will make the proximal tube too hard and brittle. It is easy to damage blood vessels, and its ability to traverse lesions is also poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] See figure 1 , a balloon catheter (specification 7.0×120), comprising an inner tube 4, a balloon 1, a developing ring 2, an outer tube 3 and a catheter seat 5, the developing ring 2 is crimped and embedded in the inner tube 4, and the distal end of the inner tube 4 The distal end of the outer tube 3 is fixed in the distal end of the balloon 1 , the distal end of the outer tube 3 is fixed in the proximal end of the balloon 1 , and the proximal end of the outer tube 3 is fixed in the catheter adapter 5 .

[0035] Please refer to figure 2 with image 3 , the inner wall of the outer tube 3 and the outer wall of the inner tube 4 are coated with a coating, the coating includes a methyl silicone oil layer and a polydimethylsiloxane layer, and the methyl silicone oil layer is arranged on the inner wall / inside of the outer tube 3 Between the outer wall of the tube 4 and the layer of polydimethylsiloxane.

[0036] The methyl silicone oil layer of the inner tube 4 is obtained ...

Embodiment 2

[0043] The balloon catheter of this embodiment has a similar structure to the balloon catheter of Embodiment 1, the difference is that:

[0044] The methyl silicone oil layer of the inner tube is obtained by the following coating method: the inner tube is soaked in methyl silicone oil (viscosity 5) containing UV curing agent 3091 for 15 seconds and then subjected to ultraviolet light (ultraviolet light intensity is 30mw / cm 2 ) was cured for 30s to obtain a methyl silicone oil layer; the quality of the UV curing agent 3091 was 0.4% of the quality of the methyl silicone oil.

[0045] The methyl silicone oil layer of the outer tube is obtained by the following coating method: Inject (injection speed: 30mm / s) methyl silicone oil (viscosity: 5) containing UV curing agent 3091 into the inner cavity of the outer tube for 15s and then perform ultraviolet light (ultraviolet light Strength is 30mw / cm 2 ) was cured for 30s to obtain a methyl silicone oil layer; the quality of the UV cur...

Embodiment 3

[0050] The balloon catheter of this embodiment has a similar structure to the balloon catheter of Embodiment 1, the difference is:

[0051] The methyl silicone oil layer of the inner tube is obtained by the following coating method: the inner tube is immersed in methyl silicone oil (viscosity 5) containing UV curing agent 3091 for 22 seconds and then subjected to ultraviolet light (ultraviolet light intensity is 35mw / cm 2 ) was cured for 32s to obtain a methyl silicone oil layer; the mass of the UV curing agent 3091 was 0.4% of the mass of the methyl silicone oil.

[0052] The methyl silicone oil layer of the outer tube is obtained by the following coating method: Inject (injection speed 35mm / s) methyl silicone oil (viscosity 5) containing UV curing agent 3091 into the inner cavity of the outer tube for 22s and then perform ultraviolet light (ultraviolet light Strength is 35mw / cm 2 ) was cured for 32s to obtain a methyl silicone oil layer; the mass of the UV curing agent 3091...

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Abstract

The invention discloses a balloon catheter. The balloon catheter includes an inner tube, a balloon, a developing ring, an outer tube and a catheter seat. The developing ring is pressed and embedded on the inner tube, and the distal end of the inner tube is fixed in the distal end of the balloon, the distal end of the outer tube is fixed in the proximal end of the balloon, and the proximal end of the outer tube is fixed in the catheter adapter; the inner wall of the outer tube Both the outer wall of the inner tube and the inner tube are coated with a coating, the coating includes a methyl silicone oil layer and a polydimethylsiloxane layer, and the methyl silicone oil layer is arranged on the inner wall of the outer tube / the between the outer wall of the inner tube and the polydimethylsiloxane layer. In the present invention, by coating the filling cavity of the balloon catheter, the surface smoothness of the filling cavity is improved on the basis of maintaining the original pushability, tracking performance and compressive strength of the balloon catheter, thereby reducing the size of the filling cavity. Friction between the contrast fluid and the balloon reduces the deflation time of the balloon.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a balloon catheter. Background technique [0002] Balloon catheters are not only used in the treatment of coronary vessels, but also in the interventional treatment of peripheral blood vessels. Balloon catheters need to pass through curved blood vessels or complex diseased blood vessels when dilating stenotic vessels or occlusive lesions, which requires the balloon catheter to have good pushability and tracking performance, and can quickly release pressure after vasodilation to reduce vascular occlusion time to improve the efficiency of retracement. [0003] The pressure release time of the balloon catheter must be controlled within a certain range, and the shorter the better, the better the treatment. A longer pressure relief time will cause ischemia in the patient and produce adverse reactions. For some larger and longer balloon catheters, the catheter structure ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M25/10B05D1/18B05D1/30B05D3/06B05D7/00
CPCA61M25/0009A61M25/0021A61M25/0043A61M25/1002A61M25/1027A61M25/1029A61M2025/0008A61M2025/1031B05D1/18B05D1/30B05D3/067B05D7/536B05D2518/10
Inventor 蒋世俊龙汉丘信炯唐杨张雄
Owner BIOTYX MEDICAL (SHENZHEN) CO LTD
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