Cardiovascular balloon dilatation catheter

Abstract

The utility model relates to the technical field of medical instruments, in particular to a cardiovascular balloon dilatation catheter which comprises an outer tube, an inner tube, a balloon, a circular ring hoop, a connector and an inflation catheter, an air inlet is formed in the wall of the outer tube, the inner tube is coaxially and fixedly connected into the outer tube, a guide wire penetrates through the inner tube, the balloon is connected to the outer wall of one end of the outer tube, and the circular ring hoop is connected with the connector. The balloon is communicated with the air inlet, the surface of the balloon is coated with a medicine coating, the annular hoop sleeve is connected to the outer surface of the balloon in a sleeving mode through an installation piece, the connector is connected to the other end of the outer tube, an inflation inlet and a guide wire insertion opening are formed in the connector, the guide wire insertion opening is connected with the inner tube, one end of the inflation catheter is connected to the air inlet, and the other end of the inflation catheter is connected to the air outlet. Compared with the prior art, the problems that due to the fact that the distance between multiple sections of vascular lesion parts is short, medicine is fed to healthy blood vessels after the balloon is expanded, and the healthy blood vessels are affected are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and in particular to a cardiovascular balloon dilatation catheter. Background Art

[0002] A balloon catheter is a medical device commonly used in cardiovascular interventional treatment. It can deliver a balloon to a narrowed blood vessel through a catheter. However, in actual use, when encountering multiple vascular lesions and the multiple lesions are close to each other, when a single balloon catheter is expanded, the coated drug on the surface is easy to contact with the healthy blood vessel wall. Healthy blood vessels are more sensitive to the drug coating, leading to unnecessary inflammatory reactions or other complications. Therefore, there is an urgent need for a cardiovascular balloon dilatation catheter that can prevent the drug from being administered to healthy blood vessels after balloon dilatation, as the lesions are close to each other. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a cardiovascular balloon dilatation catheter, which can prevent the drug from being applied to healthy blood vessels after balloon dilatation, thereby preventing the healthy blood vessels from being affected.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a cardiovascular balloon dilatation catheter, comprising:

[0005] An outer tube, wherein an air inlet is arranged on the wall of the outer tube;

[0006] An inner tube, the inner tube is coaxially fixedly connected to the outer tube, and the inner tube is used for the guide wire to pass through;

[0007] A balloon is connected to the outer wall of one end of the outer tube, the balloon is connected to the air inlet, and the surface of the balloon is coated with a drug coating;

[0008] A circular ring hoop, the circular ring hoop is sleeved on the outer surface of the balloon through a mounting piece;

[0009] A connector, which is connected to the other end of the outer tube, and is provided with an inflation port and a guide wire insertion port, and the guide wire insertion port is connected to the inner tube;

[0010] An inflation conduit, one end of which is connected to the air inlet, and the other end of which is connected to the inflation port.

[0011] Furthermore, the circular hoop is composed of two semicircular hoops, the mounting piece is a medical spring coil, the two semicircular hoops are sleeved with the balloon surface through the medical spring coil, and the axial direction of the medical spring coil is perpendicular to the axial direction of the outer tube.

[0012] Furthermore, the semicircular hoop may be made of polycarbonate.

[0013] Furthermore, two developing marks are arranged on the outer wall of the outer tube at the balloon, and the two developing marks are located at two sides of the circular hoop.

[0014] Furthermore, a round cover threadedly connected to the inflation port is provided at the inflation port.

[0015] The beneficial effect of the utility model is that, compared with the prior art, a circular ring hoop is provided to be sleeved on the surface of the balloon, and the balloon surfaces on both sides of the circular ring hoop are used to fit the diseased blood vessels for drug administration, so that the balloon surface sleeved on the circular ring hoop is concave to avoid contact with healthy blood vessels, thereby solving the problem that the diseased parts of multiple blood vessels are close to each other, and drug administration to healthy blood vessels after the balloon is expanded is avoided, which may affect the healthy blood vessels. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of a cardiovascular balloon dilatation catheter according to a specific embodiment of the utility model;

[0017] Figure 2 The utility model is a schematic diagram of a structure in which a circular ring hoop of a cardiovascular balloon dilatation catheter is sleeved on the surface of a balloon in a specific implementation manner of the utility model.

[0018] Description of symbols

[0019] 1. Outer tube; 11. Air inlet; 2. Inner tube; 3. Balloon; 4. Circular hoop; 41. Semicircular hoop; 5. Mounting piece; 6. Connector; 61. Inflation port; 62. Guide wire insertion port; 7. Inflation catheter; 8. Visualization mark; 9. Round cover. DETAILED DESCRIPTION

[0020] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0021] Please refer to Figure 1 to Figure 2 , a cardiovascular balloon 3 dilatation catheter, comprising:

[0022] An outer tube 1, an air inlet 11 is provided on the wall of the outer tube 1;

[0023] An inner tube 2, which is coaxially fixedly connected to the outer tube 1 and is used for the guide wire to pass through;

[0024] A balloon 3 is connected to the outer wall of one end of the outer tube 1, the balloon 3 is communicated with the air inlet 11, and the surface of the balloon 3 is coated with a drug coating;

[0025] A circular ring hoop, which is sleeved on the outer surface of the balloon 3 through a mounting member 5;

[0026] A connector 6, which is connected to the other end of the outer tube 1. The connector 6 is provided with an inflation port 61 and a guide wire insertion port 62, and the guide wire insertion port 62 is connected to the inner tube 2;

[0027] The inflation conduit 7 has one end connected to the air inlet 11 and the other end connected to the inflation port 61 .

[0028] In the above embodiment, when encountering multiple diseased parts, and the distance between the multiple diseased parts is relatively close, the guide wire is passed through the inner tube 2, so that the guide wire brings the balloon 3 to the diseased part, and then the balloon 3 is inflated through the inflation port 61, so that the balloons 3 on both sides of the circular hoop are expanded and inflated, and the surface of the balloon 3 sleeved on the circular hoop is concave, so that the inflated balloons 3 on both sides of the circular hoop are in contact with the diseased blood vessel wall, and the concave part of the balloon 3 is far away from the healthy blood vessel, so that the drug coating on the surface of the inflated balloon 3 on both sides is used to treat the diseased blood vessel. Compared with the prior art, by setting the circular hoop to be sleeved on the surface of the balloon 3, the surface of the balloon 3 on both sides of the circular hoop is used to fit the diseased blood vessel for drug administration, and the surface of the balloon 3 sleeved on the circular hoop is concave to avoid contact with the healthy blood vessel, thereby solving the problem that the diseased parts of multiple blood vessels are close in distance, and the balloon 3 is prevented from being expanded and then administered to the healthy blood vessel, thereby affecting the healthy blood vessel.

[0029] As an optional embodiment, the annular hoop is composed of two semicircular hoops 41, the mounting member 5 is a medical spring coil, the two semicircular hoops 41 are connected to the surface of the balloon 3 through the medical spring coil, and the axial direction of the medical spring coil is perpendicular to the axial direction of the outer tube 1.

[0030] In the above embodiment, since the circular hoop is sleeved on the surface of the balloon 3, when the balloon 3 is expanded, the medical spring coil is pulled up, so that the balloons 3 on both sides of the circular hoop are expanded, and the balloon 3 on the circular hoop part is concave, thereby preventing the groove part of the balloon 3 from contacting the healthy blood vessel, allowing the balloons 3 on both sides of the circular hoop to fit with the blood vessel wall for drug treatment.

[0031] As an optional implementation, the semicircular hoop 41 may be made of polycarbonate.

[0032] As an optional implementation, two development marks 8 are provided on the outer wall of the outer tube 1 at the balloon 3 , and the two development marks 8 are located on two sides of the circular hoop 4 .

[0033] In the above embodiment, two developing marks are used to determine whether the balloons 3 on both sides of the circular hoop 4 have reached the corresponding lesion, so that after the balloon 3 is inflated, the circular hoop 4 limits the expansion of the balloon 3, so that the surface of the balloon 3 of the circular hoop 4 is concave inward, away from the healthy blood vessels, so that the medicine in the balloon 3 will not be delivered to the healthy blood vessels, thereby affecting the healthy blood vessels.

[0034] As an optional implementation, a round cover 9 threadably connected to the inflation port 61 is provided at the inflation port 61 .

[0035] In the above embodiment, before inflation is performed, the round cover 9 is used to seal the inflation conduit 7, and a sharp hard object is placed into the inflation conduit 7, causing the inflation conduit 7 to rupture and cause air leakage.

[0036] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A cardiovascular balloon dilatation catheter, characterized in that: include: An outer tube, wherein an air inlet is arranged on the wall of the outer tube; An inner tube, the inner tube is coaxially fixedly connected to the outer tube, and the inner tube is used for the guide wire to pass through; A balloon is connected to the outer wall of one end of the outer tube, the balloon is connected to the air inlet, and the surface of the balloon is coated with a drug coating; A circular ring hoop, the circular ring hoop is sleeved on the outer surface of the balloon through a mounting piece; A connector, which is connected to the other end of the outer tube, and is provided with an inflation port and a guide wire insertion port, and the guide wire insertion port is connected to the inner tube; An inflation conduit, one end of which is connected to the air inlet, and the other end of which is connected to the inflation port.

2. The cardiovascular balloon dilatation catheter according to claim 1, characterized in that: The circular ring hoop is composed of two semicircular hoops, the mounting piece is a medical spring coil, the two semicircular hoops are sleeved with the balloon surface through the medical spring coil, and the axial direction of the medical spring coil is perpendicular to the axial direction of the outer tube.

3. The cardiovascular balloon dilatation catheter according to claim 2, characterized in that: The material of the semicircular hoop can be polycarbonate.

4. The cardiovascular balloon dilatation catheter according to claim 1, characterized in that: Two developing marks are arranged on the outer wall of the outer tube at the balloon, and the two developing marks are located at two sides of the circular hoop.

5. The cardiovascular balloon dilatation catheter according to claim 1, characterized in that: A round cover which is threadedly connected to the inflation port is provided at the inflation port.

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