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Balloon catheter and manufacturing method thereof

A balloon catheter and a technology for making a method are used in balloon catheters, catheters and other directions to achieve the effect of improving passability

Active Publication Date: 2019-11-08
LIFETECH SCIENTIFIC (SHENZHEN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Based on this, it is necessary to provide a balloon catheter capable of self-folding and its manufacturing method for the problem that the balloon in the existing balloon catheter needs to be manually folded with the help of auxiliary tools

Method used

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  • Balloon catheter and manufacturing method thereof
  • Balloon catheter and manufacturing method thereof
  • Balloon catheter and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Example 1 provides a balloon catheter and its manufacturing method, please refer to it together Figure 1-Figure 3 The balloon catheter 100 includes a catheter 110 and a balloon 120 sheathed outside the catheter 110 and located at the distal end of the catheter 110. The catheter 110 is a hollow tube with a certain length, and includes at least one filling cavity for inflating the balloon 120 and at least one guide wire cavity for receiving a guide wire. The distal end of the filling cavity is communicated with the inside of the balloon 120, and the guide wire cavity runs through the entire catheter 110. The balloon 120 is a compliant balloon with a hollow inside and open at both ends, and can also be a semi-compliant balloon or a non-compliant balloon. The balloon 120 includes a first pin 121, a second pin 122, and a balloon 123 located between the first pin 121 and the second pin 122, and the outer diameter of the balloon 123 is larger than that of the first pin 121 and...

Embodiment 2

[0070] The balloon catheter and its manufacturing method of Example 2 are similar to those of the balloon catheter 100 and its manufacturing method of Example 1 above, and will not be repeated here. The main difference lies in that the manufacturing method provided in Example 2 further includes the following steps: S11. After the balloon is sleeved on the distal end of the catheter, the first pin and the second pin are stretched in opposite directions along the axial direction of the catheter. After step S11, the above steps S2 and / or S3 are executed again.

[0071] Or, in other embodiments, the manufacturing method provided in Embodiment 2 further includes the following steps: S38, after fixing the first pin on the catheter, and fixing the second pin or the folded portion of the second pin Before being placed on the catheter, first stretch the second pin along the axial direction of the catheter in a direction opposite to the first pin. After the above steps S1 and S2, a part o...

Embodiment 3

[0077] The balloon catheter of Example 3 and its manufacturing method are similar to those of the balloon catheter 100 and its manufacturing method of Example 1 described above. The main difference lies in that the manufacturing method of the balloon catheter of Example 3 also includes The following steps: after the balloon is sleeved on the catheter, the first pin of the balloon is rotated relative to the second pin in the circumferential direction of the catheter. For example, the two pins can be rotated toward each other at the same time when both pins are not fixed. Or, in other embodiments, one pin can be fixed first, and then the other pin can be rotated along the circumference of the catheter relative to the fixed pin, for example, when the second pin or the folded portion of the second pin is fixed Before being placed on the catheter, the first pin of the balloon is rotated relative to the second pin along the circumference of the catheter.

[0078] You can perform the r...

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PUM

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Abstract

The invention relates to a balloon catheter. The balloon catheter comprises a catheter body and a balloon sleeving the distal end of the catheter body, the balloon comprises a first pin and a second pin, the first pin and / or the second pin each include at least one folding part, and the at least one folding part is folded and fixed in the circumferential direction of the catheter body to at leastform at least one ridge and at least one recessed area facing the interior of the balloon at the positions, adjacent to the folding parts, on a balloon body of the balloon. The invention further relates to a manufacturing method of the balloon catheter. According to the balloon catheter and the manufacturing method thereof, wing self-folding of the balloon in the balloon catheter after negative pressure suction is realized, and meanwhile, the passing ability of the balloon catheter is improved.

Description

Technical field [0001] The invention relates to the technical field of balloon catheters, in particular to a balloon catheter and a manufacturing method thereof. Background technique [0002] Before the implantation of the heart occluder or after the aortic self-expanding stent is released, a compliant balloon catheter is often used for measurement or post-expansion treatment. The balloon of a compliant balloon catheter needs to have excellent elasticity and low hardness. If the conventional flap winding treatment for non-compliant balloons or semi-compliant balloons is used, compliant balloons often appear Phenomenon such as adhesion. [0003] The existing method of folding wings for a compliant balloon is realized by drawing negative pressure after manual winding with the aid of auxiliary tools, which is not easy to use and has the following problems: [0004] 1. After manually winding and pumping negative pressure, the outline of the balloon is still large, and the cone bulge wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M25/10
CPCA61M25/10A61M25/1027A61M25/1038
Inventor 吴星宇龙汉
Owner LIFETECH SCIENTIFIC (SHENZHEN) CO LTD
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