CN216571148U

CN216571148U - Bifurcated medicine balloon

Info

Publication number: CN216571148U
Application number: CN202122897212.2U
Authority: CN
Inventors: 林琦; 罗晓娟; 杨鹏
Original assignee: Chengdu No7 People's Hospital
Current assignee: Chengdu No7 People's Hospital
Priority date: 2021-11-24
Filing date: 2021-11-24
Publication date: 2022-05-24
Anticipated expiration: 2031-11-24

Abstract

The utility model discloses a bifurcated medicine balloon. The method comprises the following steps: a catheter for pushing the Y-balloon to a vessel bifurcation; the Y-shaped balloon is arranged at the far end of the catheter and can radially deform between an expansion state and a contraction state, the front part of the Y-shaped balloon is provided with a first balloon body and a second balloon body which are of a bifurcation structure, the first balloon body and the second balloon body are respectively communicated with the catheter, and the first balloon body and the second balloon body are respectively used for entering bifurcated blood vessels; the drug coating layers are uniformly distributed on the outer end surfaces of the first capsule body and the second capsule body and are used for dissolving out drugs to treat affected parts; the Y-shaped balloon is provided with a passage for blood to flow through, and when the first balloon and the second balloon are in an expansion state, the axes of the first balloon and the second balloon form an included angle of 15-45 degrees. The utility model has the beneficial effects that: the Y-shaped saccule is arranged, so that the pathological changes of the bifurcated blood vessel can be treated simultaneously, and the operation difficulty can be reduced.

Description

Bifurcated medicine balloon

Technical Field

The utility model relates to the field of medical instruments, in particular to a bifurcated medicine balloon.

Background

With the development of social aging, more and more old people suffer from vascular stenosis and even occlusion caused by hypertension, diabetes and coronary heart disease, and the tissue necrosis is finally caused by the unsmooth blood. The drug balloon is used as an effective minimally invasive interventional therapy means, has small wound, quick recovery, obvious effect and good treatment effect, and is accepted by more and more people.

The development of the drug balloon catheter has a history of passing a strange history, a urinary surgeon Forsman in Ebersswald Hospital in Germany inserts the catheter into the right atrium in 1929, which is a milestone for the intervention of the vascular catheter, and then people begin to manufacture the balloon catheter by using materials such as plastics, nylon braided fabrics, special metals and the like for checking congenital diseases of the heart due to the limitation of the catheter material until the Germany doctor Greenwich successfully implements the first example percutaneous transluminal coronary angioplasty in the world in 1977 for treating the left anterior descending stenosis. But the problem of poor long-term patency rate of blood vessels after the naked balloon catheter is expanded troubles doctors until the concept of the drug balloon is provided.

The medicine balloon (DCB) covers a layer of antiproliferative medicine on the surface of the balloon catheter in a spraying, dripping or dip-coating mode, and after the balloon reaches a lesion area and expands, the medicine is attached to the wall of a blood vessel and slowly released, thereby inhibiting the hyperplasia of smooth muscles of the intima of the blood vessel and ensuring the long-term patency rate of the blood vessel.

In the clinic, it is often the case that the bifurcation coronary artery has lesions at the bifurcation, and if two drug balloons are used to perform the operation treatment on the bifurcated vessel, the complexity of the whole operation is increased.

Therefore, a Y-shaped balloon with a bifurcation structure becomes the key to solve the problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a bifurcated medicine balloon which is provided with a Y-shaped balloon, so that the Y-shaped balloon can treat the pathological changes of bifurcated blood vessels simultaneously and reduce the operation difficulty.

It is still another object of the present invention to provide a bifurcated drug balloon having a first balloon body and a second balloon body with respective axial passageways for blood flow therethrough, which does not occlude a blood vessel during treatment.

In order to achieve the purpose, the utility model adopts the following technical scheme that:

a catheter for pushing the Y-balloon to a vessel bifurcation;

the Y-shaped balloon is arranged at the far end of the catheter and can radially deform between an expansion state and a contraction state, the front part of the Y-shaped balloon is provided with a first balloon body and a second balloon body which are of a bifurcation structure, the first balloon body and the second balloon body are respectively communicated with the catheter, and the first balloon body and the second balloon body are respectively used for entering bifurcated blood vessels;

the drug coating layers are uniformly distributed on the outer end surfaces of the first capsule body and the second capsule body and are used for dissolving out drugs to treat affected parts;

the Y-shaped balloon is provided with a passage for blood to flow through, and when the first balloon and the second balloon are in an expansion state, the axes of the first balloon and the second balloon form an included angle of 15-45 degrees.

Preferably, when said first and second balloons are in the inflated state, the axes of said first and second balloons are at an angle equal to or greater than 15 degrees and less than 30 degrees.

Preferably, when said first and second balloons are in the inflated state, the axes of said first and second balloons form an included angle of greater than or equal to 30 degrees and less than or equal to 45 degrees.

Preferably, the method further comprises the following steps:

a guidewire axially disposed within the catheter, a distal end of the guidewire extendable into the first balloon or the second balloon for advancing the first balloon and the second balloon, respectively, into an interior of a bifurcated vessel.

Preferably, the front ends of the first and second balloons are provided with connecting strips with break points, and the connecting strips automatically break when the first and second balloons are in the inflated state.

Preferably, the first and second capsules have developing marks at their front ends, respectively.

The utility model has the beneficial effects that: the Y-shaped balloon is arranged, so that the pathological changes of the bifurcated vessels can be treated simultaneously, and the operation difficulty can be reduced. The first and second sac bodies are respectively provided with a passage for blood to flow in the axial direction, so that the blood vessel is not blocked in the treatment process.

Drawings

Fig. 1 is a perspective view (in an inflated state) of a bifurcated drug balloon of the present invention.

Figure 2 is a cross-sectional view (in a deflated state) of a bifurcated drug balloon of the present invention.

Detailed Description

The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the utility model by referring to the description text.

It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.

As shown in fig. 1-2, in one implementation form of the present invention, to achieve the above object, the present invention adopts the following technical solutions, including:

the catheter 110 is a cylindrical tubular structure made of polymer material, and an outlet for the guide wire 140 to extend out is provided at the proximal end of the catheter 110. Catheter 110 is used to push Y-balloon 120 to the vessel bifurcation. Preferably, the material of the conduit 110 is any one of polyethylene, polyesteramide and polyurethane. More preferably, the material of the conduit 110 is polyurethane.

A Y-balloon 120, disposed at the distal end of the catheter 110, and radially deformable between an expanded state and a contracted state, wherein the front of the Y-balloon is a first balloon 121 and a second balloon 122 in a bifurcated structure, the first balloon 121 and the second balloon 122 are respectively communicated with the catheter 110, and the first balloon 121 and the second balloon 122 are respectively used for entering bifurcated blood vessels; wherein, a passage 123 for blood to flow is arranged on the Y-shaped balloon 120, and when the first balloon 121 and the second balloon 122 are in an expanded state, the axes of the first balloon 121 and the second balloon 122 form an included angle of 15-45 degrees. Further preferably, the Y-shaped balloon 120 is integrally formed with the catheter 110. More preferably, the method further comprises the following steps: a guidewire 140 is axially disposed within the catheter 110, the guidewire distal end being extendable into either the first balloon 121 or the second balloon 122 for advancing the first balloon 121 and the second balloon 122, respectively, into the interior of the bifurcated vessel.

The drug coating 130 is uniformly distributed on the outer end surfaces of the first capsule 121 and the second capsule 122, and is used for dissolving drugs to treat affected parts. Preferably, the thickness of the drug coating 130 is 2-12 um.

In the using process, the bifurcated medicine balloon 1 is implanted into a body, the Y-shaped balloon 120 is pushed to the bifurcation of a blood vessel through the catheter 110, then the bifurcated medicine balloon 1 is inflated to swell the bifurcated medicine balloon 1, then the first balloon 121 or the second balloon 122 is respectively pushed to the inside of the bifurcated blood vessel through the guide wire 140, and the bifurcated medicine balloon 1 is inflated again to enable the bifurcated medicine balloon 1 to be in the expanded state. The first capsule 121 or the second capsule 122 is completely attached to the inner wall of the blood vessel, and the drug coating 130 is dissolved to treat the affected part. During treatment, due to the existence of the passage 123 side, the blood at the affected part can flow normally. After the treatment is finished, the air in the bifurcated saccule 1 is discharged, so that the bifurcated saccule 1 is retracted to a contraction state and then removed.

In another embodiment, the axes of said first and

second balloons

121, 122 are angled at an angle equal to or greater than 15 degrees and less than 30 degrees when said first and

second balloons

121, 122 are in the inflated state. When first and

second balloons

121 and 122 are in this angular range, it is suitable for use in a bifurcated vessel with a small bifurcation angle.

In another embodiment, the axes of said first and

second balloons

121, 122 are angled at an angle equal to or greater than 30 degrees and equal to or less than 45 degrees when said first and

second balloons

121, 122 are in the inflated state. When first and

second balloons

121 and 122 are in this angular range, it is suitable for use in a bifurcated vessel with a large bifurcation angle.

In another embodiment, the method further comprises: a guidewire 140 axially disposed within said catheter 110, said guidewire 140 having a distal end extendable into said first and

second balloons

121, 122 for advancing said first and

second balloons

121, 122, respectively, into the interior of a bifurcated vessel. Preferably, a rounded structure is provided at the front end of the guide wire 140.

In another embodiment, a connecting strip with break points is provided at the front ends of the first and

second capsules

121 and 122, which is automatically broken when the first and

second capsules

121 and 122 are in the inflated state.

In another embodiment, the developing

marks

151 and 152 are respectively provided at the front ends of the first and

second capsules

121 and 122.

In conclusion, the bifurcated medicine balloon 1 provided with the Y-shaped balloon can treat the pathological changes of bifurcated blood vessels simultaneously and reduce the operation difficulty. Passages 123 for blood to flow are respectively arranged on the axial direction of the first balloon 121 and the second balloon 122, and the blood vessels are not blocked in the treatment process.

While embodiments of the utility model have been described above, it is not intended to be limited to the details shown, described and illustrated herein, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed, and to such extent that such modifications are readily available to those skilled in the art, and it is not intended to be limited to the details shown and described herein without departing from the general concept as defined by the appended claims and their equivalents.

Claims

1. A bifurcated drug balloon, comprising:

a catheter for pushing the Y-balloon to a vessel bifurcation;

the Y-shaped balloon is arranged at the far end of the catheter and can radially deform between an expansion state and a contraction state, the front part of the Y-shaped balloon is provided with a first balloon and a second balloon which are of a bifurcation structure, the first balloon and the second balloon are respectively communicated with the catheter, and the first balloon and the second balloon are used for respectively entering bifurcated blood vessels;

2. The bifurcated drug balloon of claim 1, wherein: when the first balloon and the second balloon are in the expanded state, the included angle formed by the axes of the first balloon and the second balloon is larger than or equal to 15 degrees and smaller than 30 degrees.

3. The bifurcated drug balloon of claim 1, wherein: when the first balloon and the second balloon are in an expansion state, the axes of the first balloon and the second balloon form an included angle of more than or equal to 30 degrees and less than or equal to 45 degrees.

4. The bifurcated drug balloon of claims 2 or 3, further comprising:

5. The bifurcated drug balloon of claim 2 or 3, wherein: the front ends of the first and second capsules are provided with connecting strips with breakpoints, and when the first and second capsules are in an expansion state, the connecting strips automatically break.

6. The bifurcated drug balloon of claim 2 or 3, wherein: developing marks are respectively arranged at the front ends of the first capsule body and the second capsule body.