Coronary balloon dilatation catheter capable of releasing paclitaxel

Abstract

The utility model discloses a paclitaxel releasing coronary balloon dilatation catheter which comprises a catheter body, a balloon is installed on the outer side of the catheter body, a plurality of releasing holes are formed in the outer side of the balloon, a plurality of connecting holes are formed in the outer side of the catheter body, a plurality of connecting strips are installed on the inner side of the balloon, and a blocking balloon is installed between the connecting strips. The blocking balloon is used for blocking the release hole, and the inner side of the blocking balloon is connected with a suction piece. Air is injected into the plugging balloon through the suction part, so that the plugging balloon is supported, when the plugging balloon is expanded greatly, the releasing hole in the surface of the balloon can be plugged to a certain extent, medicine releasing of the releasing hole is slowed down or even stopped, and when the plugging balloon is not expanded or expanded slightly, the medicine releasing efficiency of the releasing hole reaches the highest. The paclitaxel release efficiency can be conveniently controlled, and the paclitaxel release capsule can be conveniently used according to patient conditions.

Description

Technical Field

[0001] The utility model relates to the technical field of dilatation catheters, in particular to a paclitaxel-releasing coronary balloon dilatation catheter. Background Art

[0002] In the field of treatment of cardiovascular diseases, coronary balloon dilatation catheter is an important therapeutic tool, and paclitaxel, as an effective drug, has a significant effect in inhibiting vascular restenosis.

[0003] Typically, after balloon dilation, catheters struggle to precisely control the release rate of paclitaxel, preventing flexible adjustments based on the patient's specific condition and treatment needs. This can lead to uneven drug release, impacting treatment efficacy and even causing side effects. In some cases, too rapid a release can overstimulate blood vessels, while too slow a release can prevent the desired therapeutic effect. To address this issue, we propose a paclitaxel-releasing coronary balloon dilation catheter. Utility Model Content

[0004] The purpose of the utility model is to provide a paclitaxel-releasing coronary balloon dilation catheter to solve the problems raised by the above-mentioned background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a paclitaxel-releasing coronary balloon dilatation catheter, comprising a catheter, a balloon mounted on the outside of the catheter, and a plurality of release holes formed on the outside of the balloon;

[0006] A plurality of connecting holes are opened on the outside of the catheter, a plurality of connecting strips are installed on the inside of the balloon, a blocking balloon is installed between the plurality of connecting strips, the blocking balloon is used to block the release hole, and a suction piece is connected to the inside of the blocking balloon.

[0007] Preferably, the connecting hole is located on the inner side of the balloon.

[0008] Preferably, the blocking balloon adopts an annular structural design, and the outer side of the blocking balloon is expanded to block the release hole.

[0009] Preferably, the suction piece is specifically an inner tube, the inner tube is connected to the blocking balloon, and the inner tube passes through the catheter.

[0010] Preferably, the release hole is used to release the paclitaxel drug between the catheter and the balloon toward the blood vessel wall.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. This paclitaxel-releasing coronary balloon dilatation catheter is used by inserting the catheter and balloon into the narrowed coronary artery. Then, saline containing paclitaxel is injected into the catheter. The saline in the catheter enters the space between the balloon and the catheter through the connecting hole, thereby inflating the balloon. The paclitaxel saline between the balloon and the catheter is released through the release hole onto the inner wall of the blood vessel, thereby achieving a therapeutic effect.

[0013] 2. The paclitaxel-releasing coronary balloon dilatation catheter injects air into the occluding balloon through the inner tube, causing the occluding balloon to be inflated. When the occluding balloon is greatly expanded, the release holes on the balloon surface can be blocked to a certain extent, slowing down or even stopping the release of drugs from the release holes. When the occluding balloon is not expanded or expanded only slightly, the release efficiency of the release holes reaches the fastest. It is relatively convenient to control the paclitaxel release efficiency and is convenient for use according to the patient's condition. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the internal structure of the balloon of the present invention.

[0017] In the figure: 1. catheter; 2. balloon; 3. release hole; 4. connecting hole; 5. connecting strip; 6. blocking balloon; 7. inner tube. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] Example 1

[0020] Please refer to Figure 1-3 As shown, the utility model provides a paclitaxel-releasing coronary balloon dilatation catheter, comprising a catheter 1, a balloon 2 is mounted on the outside of the catheter 1, and a plurality of release holes 3 are opened on the outside of the balloon 2;

[0021] Several connecting holes 4 are opened on the outside of the catheter 1, several connecting strips 5 are installed on the inside of the balloon 2, and a blocking balloon 6 is installed between the several connecting strips 5. The blocking balloon 6 is used to block the release hole 3, and the inside of the blocking balloon 6 is connected to a suction piece.

[0022] Specifically, air is injected into the blocking balloon 6 through the suction piece, so that the blocking balloon 6 is inflated. When the blocking balloon 6 expands greatly, it can block the release hole 3 on the surface of the balloon 2 to a certain extent, slowing down or even stopping the release of the drug from the release hole 3. When the blocking balloon 6 does not expand or expands slightly, the release efficiency of the drug from the release hole 3 reaches the fastest, which makes it more convenient to control the release efficiency of paclitaxel and is convenient for use according to the patient's condition.

[0023] The connecting hole 4 is located on the inner side of the balloon 2 , and the paclitaxel drug in the catheter 1 can enter the position between the balloon 2 and the catheter 1 through the connecting hole 4 .

[0024] The blocking balloon 6 is designed as an annular structure, and the outer side of the blocking balloon 6 is expanded to block the release hole 3 .

[0025] The suction piece is specifically an inner tube 7 , which is connected to the inner side of the blocking balloon 6 . The inner tube 7 passes through the catheter 1 , and is used to inject or inhale air into the blocking balloon 6 .

[0026] The release hole 3 is used to release the paclitaxel drug between the catheter 1 and the balloon 2 toward the blood vessel wall.

[0027] Working Principle: The present invention is a paclitaxel-releasing coronary balloon dilatation catheter. When in use, after the catheter 1 and balloon 2 are inserted into the narrowed coronary artery, saline containing paclitaxel is injected into the catheter 1. The saline in the catheter 1 enters between the balloon 2 and the catheter 1 through the connecting hole 4, thereby propping up the balloon 2. The paclitaxel saline between the balloon 2 and the catheter 1 is released to the inner wall of the blood vessel through the release hole 3, thereby achieving a therapeutic effect.

[0028] Air is injected into the blocking balloon 6 through the inner tube 7, so that the blocking balloon 6 is inflated. When the blocking balloon 6 is greatly expanded, it can block the release hole 3 on the surface of the balloon 2 to a certain extent, slowing down or even stopping the release of the drug from the release hole 3. When the blocking balloon 6 does not expand or expands slightly, the release efficiency of the drug from the release hole 3 reaches the fastest, which makes it more convenient to control the release efficiency of paclitaxel and is convenient to use according to the patient's condition.

[0029] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0030] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A paclitaxel-releasing coronary balloon dilatation catheter, comprising a catheter (1), characterized in that: A balloon (2) is installed on the outside of the catheter (1), and a plurality of release holes (3) are opened on the outside of the balloon (2); The outer side of the catheter (1) is provided with a plurality of connection holes (4), the inner side of the balloon (2) is provided with a plurality of connection strips (5), a blocking balloon (6) is provided between the plurality of connection strips (5), the blocking balloon (6) is used to block the release hole (3), and the inner side of the blocking balloon (6) is connected to a suction piece.

2. The paclitaxel-releasing coronary balloon dilatation catheter according to claim 1, characterized in that: The connecting hole (4) is located on the inner side of the balloon (2).

3. The paclitaxel-releasing coronary balloon dilatation catheter according to claim 1, characterized in that: The blocking balloon (6) adopts an annular structural design, and the outer side of the blocking balloon (6) is expanded to block the release hole (3).

4. The paclitaxel-releasing coronary balloon dilatation catheter according to claim 1, characterized in that: The suction piece is specifically an inner tube (7), the inner tube (7) is connected to the blocking balloon (6), and the inner tube (7) passes through the catheter (1).

5. The paclitaxel-releasing coronary balloon dilatation catheter according to claim 1, characterized in that: The release hole (3) is used to release the paclitaxel drug between the catheter (1) and the balloon (2) toward the blood vessel wall.

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