Pulmonary artery micro catheter with wedge-shaped balloon

Abstract

The pulmonary artery micro catheter comprises a catheter body, a guide wire channel penetrating through the catheter body and a balloon channel arranged in the catheter body, the wedge-shaped balloon is arranged at the far end of the catheter body, the far end of the wedge-shaped balloon is closed, and the other end of the wedge-shaped balloon is communicated with the balloon channel.

Description

Technical Field

[0001] This utility model belongs to the field of medical devices, specifically relating to a pulmonary artery microcatheter with a wedge-shaped balloon. Background Technology

[0002] In the field of interventional cardiovascular surgery, especially for the diagnosis and treatment of pulmonary artery diseases, particularly the interventional treatment of occlusive lesions, specialized pulmonary artery microcatheters play a crucial role in current treatment techniques. However, the variety of pulmonary artery microcatheters currently on the market is relatively limited, primarily focusing on the treatment of occlusive lesions while often neglecting the need for lesion dilation. These catheters often require frequent guidewire exchanges during procedures, increasing not only the complexity and time cost of the procedure but also posing additional radiation exposure risks to both doctors and patients.

[0003] Specifically, most existing pulmonary artery microcatheters are designed to deliver therapeutic devices or drugs to the lesion site, but their function is mainly limited to the treatment of occlusion of lesions and cannot directly dilate the lesion. In practice, in order to dilate the lesion, doctors usually need to change the catheter and guidewire multiple times, which not only prolongs the operation time but also increases the risk and difficulty of the operation. Summary of the Invention

[0004] To address the aforementioned shortcomings of existing technologies, the present invention aims to provide a pulmonary artery microcatheter with a wedge-shaped balloon. This addresses the problem that existing pulmonary artery microcatheters are used to deliver therapeutic devices or drugs to the lesion site, but their function is mainly limited to the treatment of occlusion lesions. They cannot directly dilate the lesion, requiring doctors to replace the catheter and guidewire multiple times to achieve dilation, which not only prolongs the operation time but also increases the risk and difficulty of the operation.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A pulmonary artery microcatheter with a wedge-shaped balloon includes a catheter body, a guidewire channel 2 penetrating the catheter body 1, and a balloon channel 3 disposed inside the catheter body. A wedge-shaped balloon 4 is disposed at the distal end of the catheter body, the distal end of the wedge-shaped balloon 4 is closed, and the other end communicates with the balloon channel 3.

[0007] This invention is the first to apply a wedge design to the balloon portion of a pulmonary artery microcatheter, a design that fully considers the anatomical morphology of pulmonary vessels.

[0008] Preferably, the wedge-shaped balloon 4 is configured with a wedge shape that is smaller distally and larger proximally. This shape allows it to adhere tightly to the diseased blood vessel wall after pressure is applied, while avoiding excessive distal dilation that could cause secondary damage.

[0009] Preferably, the wedge-shaped balloon 4 has a distal diameter of 1.5 mm and a proximal diameter of 2.5 mm.

[0010] By employing an anatomically fitted wedge-shaped balloon, this invention effectively solves the problem of excessive distal vessel dilation and insufficient proximal vessel dilation during the dilation process of existing pulmonary artery occlusion lesions, reducing surgical risks and the incidence of complications. Simultaneously, this design also improves catheter permeability and support, making the surgical procedure simpler and more efficient.

[0011] Preferably, the catheter body 1 is made of a flexible material. This material has good biocompatibility and corrosion resistance, ensuring the safe use of the catheter in the pulmonary artery.

[0012] Preferably, the wedge-shaped balloon 4 is made of an elastic medical polymer material. This material has good elasticity and wear resistance, and can adhere tightly to the wall of the diseased blood vessel after pressure is applied, thereby expanding the lesion.

[0013] Compared with existing technologies, this utility model has the following beneficial effects:

[0014] First, the procedure is simpler and the operation time is shorter, thus reducing patient discomfort and recovery time. The anatomically designed wedge balloon minimizes damage to the patient's blood vessel walls, lowers the risk of postoperative complications, and improves the overall surgical experience and comfort.

[0015] Secondly, while maintaining product simplicity, this invention integrates the dual functions of lesion dilation and catheter passage, avoiding unnecessary functional redundancy and thus reducing product complexity and cost. The shortened operation time and reduced complications also lower the consumption of medical resources and medical costs.

[0016] Furthermore, the wedge-shaped balloon design allows surgeons to focus more on the procedure, reducing the risk of prolonged surgery and increased surgical risks caused by complex procedures. At the same time, this design also reduces the physical exertion required of surgeons during the operation, improving their work efficiency.

[0017] In summary, the pulmonary artery microcatheter with a wedge-shaped balloon described in this invention demonstrates significant beneficial effects in the interventional treatment of pulmonary artery diseases. It not only improves the safety and success rate of the procedure but also optimizes the patient experience, reduces medical costs, promotes medical technology advancement, and enhances physician efficiency. Therefore, the introduction of this patent will have a positive impact on the interventional treatment of pulmonary artery diseases. Attached Figure Description

[0018] Figure 1 Overall diagram of a pulmonary artery microcatheter with a wedge-shaped balloon.

[0019] Figure 2 A cross-sectional view of the anterior half of a pulmonary artery microcatheter with a wedge-shaped balloon.

[0020] 1 – Catheter body; 2 – Guidewire channel; 3 – Balloon channel; 4 – Wedge balloon; 5 – Handle Detailed Implementation

[0021] The present invention will be further described in detail below with reference to specific embodiments.

[0022] like Figure 1 , 2 As shown, a pulmonary artery microcatheter with a wedge-shaped balloon includes a catheter body made of a flexible material, a guidewire channel penetrating the catheter body, and a balloon channel disposed inside the catheter body. A wedge-shaped balloon made of elastic medical polymer material is disposed at the distal end of the catheter body. The distal end of the wedge-shaped balloon is closed, while the other end communicates with the balloon channel. The wedge-shaped balloon is shaped like a wedge, with a smaller distal end and a larger proximal end. The distal diameter of the wedge-shaped balloon is 1.5 mm, and the proximal diameter is 2.5 mm. The wedge-shaped balloon is installed at the distal end of the catheter body, ensuring unobstructed access to both the guidewire channel and the balloon channel.

[0023] After passing a guidewire through the pulmonary artery occlusion site, a microcatheter is inserted to the distal end. Angiography confirms the true lumen. Pressure is then applied to the wedge-shaped balloon through the balloon channel, causing the balloon to inflate and adhere tightly to the diseased vessel wall. The pressure and speed are adjusted according to the severity of the lesion and the need for dilation until the desired dilation effect is achieved.

[0024] The above embodiments of this utility model are merely illustrative examples and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations and modifications based on the above description. It is impossible to exhaustively list all possible implementations here. All obvious variations or modifications derived from the technical solutions of this utility model are still within the protection scope of this utility model.

Claims

1. A pulmonary artery microcatheter with a wedge-shaped balloon, comprising a catheter body (1), a guidewire channel (2) penetrating the catheter body (1), and a balloon channel (3) disposed inside the catheter body (1), characterized in that, The distal end of the catheter body is provided with a wedge-shaped balloon (4), the distal end of the wedge-shaped balloon (4) is closed, and the other end is connected to the balloon channel (3).

2. The pulmonary artery microcatheter with wedge-shaped balloon according to claim 1, characterized in that, The wedge-shaped balloon (4) is configured in the shape of a wedge with a smaller distal end and a larger proximal end.

3. The pulmonary artery microcatheter with wedge-shaped balloon according to claim 2, characterized in that, The wedge-shaped balloon (4) has a distal diameter of 1.5 mm and a proximal diameter of 2.5 mm.

4. The pulmonary artery microcatheter with wedge-shaped balloon according to claim 1, characterized in that, The main body of the catheter is made of a flexible material.

5. The pulmonary artery microcatheter with wedge-shaped balloon according to claim 1, characterized in that, The wedge-shaped balloon (4) is made of elastic medical polymer material.

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