CN-224207209-U - Pulmonary artery microcatheter with wedge-shaped saccule

Abstract

The utility model discloses a pulmonary artery micro-catheter with a wedge-shaped balloon, which comprises a catheter main body, a guide wire channel penetrating the catheter main body and a balloon channel arranged in the catheter main body, wherein the wedge-shaped balloon is arranged at the distal end of the catheter main body, the distal end of the wedge-shaped balloon is closed, and the other end of the wedge-shaped balloon is communicated with the balloon channel.

Inventors

• PU PENG
• MA LIJIN
• LU KAI

Assignees

• 重庆医科大学附属第一医院

Dates

Publication Date

20260508

Application Date

20241210

Claims (5)

1. 1. The pulmonary artery microcatheter with the wedge-shaped balloon comprises a catheter main body (1), a guide wire channel (2) penetrating through the catheter main body (1) and a balloon channel (3) arranged inside the catheter main body (1), and is characterized in that the wedge-shaped balloon (4) is arranged at the far end of the catheter main body, the far end of the wedge-shaped balloon (4) is closed, and the other end of the wedge-shaped balloon is communicated with the balloon channel (3).
2. 2. Pulmonary artery microcatheter with wedge balloon according to claim 1, characterized in that the wedge balloon (4) is arranged in the shape of a far small near large wedge.
3. 3. The pulmonary artery microcatheter with wedge balloon according to claim 2, wherein the wedge balloon (4) has a distal diameter of 1.5mm and a proximal diameter of 2.5mm.
4. 4. The wedge balloon pulmonary artery micro catheter of claim 1, wherein the catheter body material is a flexible material.
5. 5. The pulmonary artery microcatheter with wedge balloon according to claim 1, wherein the wedge balloon (4) is an elastic medical polymer material.

Description

Pulmonary artery microcatheter with wedge-shaped saccule Technical Field The utility model belongs to the field of medical instruments, and particularly relates to a pulmonary artery microcatheter with a wedge-shaped balloon. Background In the field of cardiovascular interventional operations, in particular to diagnosis and treatment of pulmonary artery diseases, in particular to interventional diagnosis and treatment of occlusion lesions, a special pulmonary artery microcatheter plays a vital role in the current treatment technical means. However, the types of pulmonary artery microcatheters currently on the market are relatively limited, and mainly focus on the occlusion treatment of an occlusion lesion, but the expansion requirement of the lesion is often ignored. In operation, such catheters often require frequent exchanges of guide wires, which not only increases the complexity and time costs of the surgical procedure, but also creates additional radiation exposure risks to both the patient and the physician. In particular, most of the existing pulmonary artery microcatheters are designed to deliver therapeutic devices or drugs to the lesion site, but the functions of the existing pulmonary artery microcatheters are mainly limited to occlusion treatment for occluding the lesion, and the lesion cannot be directly expanded. In practice, to complete the expansion of the lesion, the physician typically needs to replace the catheter and guidewire multiple times, which not only increases the procedure time, but also increases the risk and difficulty of the procedure. Disclosure of Invention Aiming at the defects existing in the prior art, the utility model aims to provide the pulmonary artery microcatheter with the wedge-shaped saccule, which aims to solve the problems that in the prior art, the pulmonary artery microcatheter is used for delivering a therapeutic instrument or medicine to a lesion part, but the function of the pulmonary artery microcatheter is mainly limited to the occlusion treatment of an occlusion lesion, the lesion can not be directly expanded, and a doctor needs to change the catheter and the guide wire for multiple times to achieve the purpose of expansion, so that the operation time is prolonged, and meanwhile, the operation risk and difficulty are increased. In order to achieve the above purpose, the present utility model adopts the following technical scheme: The pulmonary artery microcatheter with the wedge-shaped balloon comprises a catheter main body, a guide wire channel 2 penetrating through the catheter main body 1 and a balloon channel 3 arranged in the catheter main body, wherein the wedge-shaped balloon 4 is arranged at the distal end of the catheter main body, the distal end of the wedge-shaped balloon 4 is closed, and the other end of the wedge-shaped balloon is communicated with the balloon channel 3. The invention applies a wedge-shaped design to the balloon portion of the pulmonary artery microcatheter for the first time, which fully considers the anatomical morphology of the pulmonary blood vessel. Preferably, the wedge balloon 4 is arranged in the shape of a far smaller and near larger wedge. The shape can be closely attached to the wall of a lesion blood vessel after pressurization, and meanwhile, secondary injury caused by excessive expansion of the distal end is avoided. Preferably, the wedge balloon 4 has a distal diameter of 1.5mm and a proximal diameter of 2.5mm. By adopting the anatomical fit design of the wedge-shaped saccule, the invention effectively solves the problems of over-expansion of the distal blood vessel and insufficient expansion of the proximal blood vessel of the existing pulmonary artery occlusion lesion section in the expansion process, and reduces the operation risk and the incidence rate of complications. Meanwhile, the design also improves the trafficability and the supportability of the catheter, so that the operation is simpler and more convenient and efficient. Preferably, the catheter body 1 is made of a flexible material. The material has good biocompatibility and corrosion resistance, and ensures the safe use of the catheter in pulmonary arteries. Preferably, the wedge-shaped balloon 4 is made of elastic medical polymer material. The material has good elasticity and wear resistance, and can be closely attached to the wall of a lesion blood vessel after being pressurized, so that the expansion of the lesion is realized. Compared with the prior art, the utility model has the following beneficial effects: Firstly, the operation time is shortened because the operation is simpler and more convenient, thereby reducing the operation pain and the postoperative recovery time of patients. The anatomical fit design of the wedge-shaped balloon reduces the damage to the vascular wall of the patient, reduces the risk of postoperative complications, and improves the overall operation experience and comfort of the patient. Secondly, the invention rea