Balloon catheter and preparation method thereof

A balloon catheter and balloon technology, applied in the field of balloon catheter and its preparation, can solve the problems of multi-drug transfer efficiency, loss of drug solution, vasospasm and thrombus, so as to improve drug transfer rate, improve safety, reduce The effect of loss of flow

Pending Publication Date: 2021-10-22
SHANGHAI MICROPORT MEDICAL (GROUP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a balloon catheter and a preparation method thereof, so as to solve the problems that the existing perfusion drug balloons are easy to cause vasospasm and thrombus, the loss of drug solution is large, and the drug transfer efficiency is low.

Method used

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  • Balloon catheter and preparation method thereof
  • Balloon catheter and preparation method thereof
  • Balloon catheter and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0051] figure 1 It is the axial sectional view of the balloon catheter provided by the preferred embodiment 1 of the present invention and its balloon when it is not inflated, figure 2 yes figure 1 A partial enlargement of the balloon catheter shown, image 3 It is the axial sectional view of the balloon catheter provided by the preferred embodiment 1 of the present invention and its balloon expansion, Figure 4 yes image 3 A partial enlargement of the balloon catheter shown.

[0052] Such as Figure 1 ~ Figure 4 As shown, the present embodiment provides a balloon catheter 100, which includes a catheter body 110 and a balloon 120, and the balloon 120 includes an inner balloon 121 (ie, the second balloon) and an outer balloon 122 (ie, the first balloon). balloon), the inner balloon 121 and the outer balloon 122 are sleeved on the catheter body 110 from the inside to the outside in turn, and after expansion, there is a gap between the outer balloon 122 and the inner ballo...

Embodiment 2

[0066] Figure 5 The axial cross-sectional view of the balloon catheter and its balloon when it is not expanded for the second preferred embodiment of the present invention, Figure 6 for Figure 5 A partial enlargement of the balloon catheter, Figure 7 The axial sectional view of the balloon catheter and its balloon expansion provided for this embodiment, Figure 8 for Figure 7 A partial enlargement of the balloon catheter.

[0067] Such as Figure 5 ~ and Figure 8 As shown, the present embodiment provides a balloon catheter 200, which includes a catheter body 210 and a balloon 220, the balloon 220 includes an inner balloon 221 and an outer balloon 222, and the inner balloon 221 and the outer balloon 222 is sleeved on the catheter body 210 from the inside to the outside, and after expansion, there is a gap between the outer balloon 222 and the inner balloon 221, that is, the expanded diameter of the outer balloon 222 is larger than the expanded diameter of the inner ...

Embodiment 3

[0073] This embodiment provides a method for preparing a balloon catheter, which is used to prepare the balloon catheter described in Embodiment 1 or Embodiment 2, and can also be used to prepare a single-layer balloon balloon catheter.

[0074] When preparing a balloon catheter with a single-layer balloon, first provide a catheter body and a single-layer balloon, and wrap the single-layer balloon on the catheter body, and then open several holes on the single-layer balloon. micropores, and a barrier wall is arranged at each of the micropores, and the barrier wall is configured to be inclined toward the corresponding micropores to at least partially cover the micropores when the single-layer balloon is inflated , and reserve a liquid medicine channel between the barrier wall and the corresponding micropore, and make the extending direction of the liquid medicine channel not perpendicular to the longitudinal axis of the balloon catheter.

[0075]When preparing the balloon cathe...

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Abstract

The invention relates to a balloon catheter and a preparation method thereof. The balloon catheter comprises a catheter body and a balloon, the catheter body is sleeved with the balloon, the balloon comprises at least one first balloon, a plurality of first micropores are formed in the first balloon, and retaining walls are arranged at the first micropores; after the balloon is expanded, the retaining walls incline towards the corresponding first micropores so as to at least partially cover the first micropores, liquid medicine channels are reserved between the retaining walls and the first micropores, and the extending direction of the liquid medicine channels is not perpendicular to the longitudinal axis of the balloon catheter. The retaining walls are used for buffering liquid medicine, the spraying speed of the liquid medicine is reduced, the spraying direction of the liquid medicine is changed, and thus the stimulation effect of the liquid medicine on blood vessels is reduced, and vasospasm is reduced.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a balloon catheter and a preparation method thereof. Background technique [0002] Since the 1970s, the use of interventional medical devices to treat various cardiovascular diseases has become more and more common. And it has experienced three milestone rapid developments: simple balloon dilatation (PTCA), bare metal stent (BMS) and drug-eluting stent (DES). In particular, the emergence of drug-coated stents has achieved great success in the treatment of vascular stenosis, showing the potential of DES in the treatment of stenosis. At present, DES is the first choice for the treatment of obstructive coronary heart disease, but it has problems such as late stent thrombosis, long healing time of blood vessels, and easy influence on vascular pulsation. Moreover, the application of DES is limited in in-stent restenosis (ISR), small vessel disease and bifurcation disease. In...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M25/10A61M31/00
CPCA61M25/1002A61M25/0009A61M31/002A61M25/1027A61M2025/105A61M2025/1086
Inventor 李猛王钰富李俊菲
Owner SHANGHAI MICROPORT MEDICAL (GROUP) CO LTD
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