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Balloon catheter

A balloon catheter and balloon technology, which can be applied to balloon catheters, catheters, pretreated surfaces, etc., can solve problems such as poor performance of crossing lesions and easy damage to blood vessels, and achieve improved surface smoothness, reduced friction, and reduced The effect of decompression time

Active Publication Date: 2018-06-29
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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  • Balloon catheter
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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 and 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 b...

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 comprises an inner tube, a balloon, a developing ring, an outer tube and a catheter base, wherein the developing ring is embedded in the inner tube through pressing, and the far end of the inner tube is fixed in a distal part of the balloon; the far end of the outer tube is fixed in the near end of the balloon, and the near end of the outer tube is fixed in the catheter base; the inner wall of the outer tube and the outer wall of the inner tube are both coated with a coating. Each coating comprises a methyl silicon oil layer anda polydimethylsiloxane layer, wherein the methyl silicon oil layer is arranged between the inner wall of the outer tube / the outer wall of the inner tube and the polydimethylsiloxane layer. A filling cavity of the balloon catheter is coated with a coating, so that the surface smoothness of the filling cavity is improved on the basis that the original the original pushing property, traceability andcompressive strength of the balloon catheter are kept, then the friction between the filling cavity and contrast liquid is reduced, and the pressure relief time of the balloon is shortened.

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 Applications(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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