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Medicine-coated balloon catheter

A drug coating and balloon catheter technology, applied in the field of medical devices, can solve problems such as unavoidable losses, and achieve the effects of reducing the complexity of the operation and the operation cost, protecting the blood flow and saving the operation time.

Pending Publication Date: 2019-02-26
HANGZHOU WEIQIANG MEDICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although such a design satisfies the pre-expansion function of the lesion, it still cannot avoid the loss of the drug on the surface of the first balloon by the blood flow during the delivery process.

Method used

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  • Medicine-coated balloon catheter
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  • Medicine-coated balloon catheter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] See figure 1 , a drug-coated balloon catheter, comprising a pusher catheter 310, an expandable first balloon 100 located at the distal end of the pusher catheter 310, and a pre-expansion mechanism. At least part of the surface of the first balloon 100 is coated with a drug coating 30 .

[0043]The first balloon 100 has three to six flaps before expansion. The first balloon 100 is fixed on the distal end of the pushing catheter 310 by welding, bonding and other common technical means in the field, which will not be repeated here. The first balloon 100 is composed of a proximal part, a distal part and a working section between them. The proximal end and the distal end of the first balloon 100 are generally conical, and the middle working section is cylindrical with a diameter ranging from 2 to 15 mm. The length of the first balloon 100 ranges from 30-320mm. The effective length (ie, the length of the working section) of the first balloon 100 ranges from 20-300 mm. Th...

Embodiment 2

[0056] The structure of the drug-coated balloon catheter in Example 2 is basically the same as the structure of the drug-coated balloon catheter provided in Example 1. The difference is that in the drug-coated balloon catheter in Example 2, the drug-coated balloon The number of capsules is plural. The drug-coated balloon catheter of Example 2 is especially suitable for the treatment of multi-segment lesions in the same blood vessel.

[0057] Specifically, see Figure 10 The distal ends of the pushing catheter 310 are respectively fixed with two first balloons 100 so as to simultaneously dilate and treat multiple lesion sites. The mutual positions between the two first balloons 100 are not limited, as long as both are located at the distal end of the pushing catheter 310 . The two first balloons 100 can be adjacent to each other, or can be arranged at intervals. The shapes of the two first balloons 100 can be the same or different. The shape of the two first balloons 100 is...

Embodiment 3

[0069] The structure of the drug-coated balloon catheter in Example 3 is basically the same as the structure of the drug-coated balloon catheter provided in Example 1. The difference is that in the drug-coated balloon catheter in Example 3, the drug-coated balloon There are multiple balloons, and the distance between the multiple drug-coated balloons can be adjusted. The drug-coated balloon catheter of Example 3 is especially suitable for the treatment of vascular lesions in different branches of bifurcated vessels.

[0070] Specifically, see Figure 13 , the drug-coated balloon catheter includes a pushing catheter 310, at least one expandable first balloon 100 located at the distal end of the pushing catheter 310, and a pre-expansion mechanism. At least part of the surface of the first balloon 100 is covered with the drug coating 30 . The pre-expansion mechanism includes an inflatable first expansion sleeve 220 movably sleeved on the outside of the first balloon 100 , and a...

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Abstract

The invention discloses a medicine-coated balloon catheter comprising a push catheter, at least one expandable first balloon at a distal end of the push catheter, and a pre-expansion mechanism. At least a portion of the surface of the first balloon is covered with a drug coating. The pre-expansion mechanism comprises an expandable first expansion sleeve that is movably sleeved outside the first balloon, and a first expansion sleeve connector that is coupled to the proximal end of the first expansion sleeve. The first expansion sleeve connector is sleeved outside the push catheter and moves relative to the push catheter in the axial direction. The medicine-coated balloon catheter of the invention can not only effectively pre-expand the diseased part, but also effectively avoid the loss of the medicine-coated balloon in the conveying process, and the operation process is simple, the operation time is short, and the cost is low.

Description

technical field [0001] The invention belongs to the technical field of medical devices and relates to a drug-coated balloon catheter. Background technique [0002] Arterial stenosis has always been a kind of disease that plagues human beings. In order to cure this kind of disease, human beings have successively experienced treatment stages such as bare balloon, bare stent, and drug-eluting stent. However, the aforementioned treatment options have different defects. So the drug-coated balloon catheter came into being. It not only creates a channel for blood circulation through balloon expansion, but also the drug loaded on the balloon can effectively inhibit the proliferation of smooth muscle cells and prevent vascular restenosis. [0003] Before using the drug-coated balloon to dilate the lesion, it is necessary to pre-expand the lesion with an ordinary drug-free balloon, so that the drug-coated balloon can enter the lesion smoothly. At the same time, the lesion is pre-expa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M25/10A61M31/00A61M29/04
CPCA61M25/1011A61M29/02A61M31/00A61M2025/1015A61M2025/105A61M25/10A61M2025/1004A61M2025/1081A61M25/0032A61M2025/0004A61M2025/1061
Inventor 张庭超李敬
Owner HANGZHOU WEIQIANG MEDICAL TECH CO LTD
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