Transcatheter pulmonary artery thrombectomy device and thrombectomy system

Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to a transcatheter pulmonary artery thrombectomy device and a thrombectomy system. The transcatheter pulmonary artery thrombus extraction device comprises a thrombus containing cavity used for obtaining thrombus; the thrombus containing cavity has flexibility and can be in an expansion state or a contraction state, the far end is of a closed structure, and the near end is of a folded structure; the transcatheter pulmonary artery thrombus extractor further comprises a pushing rod which is detachably connected with the folding structure of the thrombus containing cavity. A part of the guide piece is located in the pushing rod and can move in the axial direction of the pushing rod, and the far end of the guide piece penetrates out of the far end of the pushing rod and is connected with the far end of the thrombus containing cavity; when the guiding piece moves towards the far end in the axial direction of the pushing rod, the thrombus containing cavity is gradually in a contraction state, and when the guiding piece moves towards the near end in the axial direction of the pushing rod, the thrombus containing cavity is gradually in an expansion state. The thrombus containing cavity of the thrombus extraction device has flexibility and can be in an expansion state or a contraction state, the length of the thrombus extraction device is reduced, and the thrombus extraction success rate is increased.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a transcatheter pulmonary artery thrombus retriever and a thrombus retrieval system. Background technique [0002] Pulmonary embolism (Pulmonary Embolism, PE) is a clinical pathophysiological syndrome of pulmonary circulation disorder caused by exfoliated thrombus or other substances blocking the pulmonary artery or its branches; since various emboli in the systemic circulation may cause pulmonary embolism, pulmonary embolism is also It often occurs in the form of comorbidities. [0003] PE is the third leading cause of cardiovascular death after coronary heart disease and stroke, and has the characteristics of high morbidity, high mortality, high recurrence, and high misdiagnosis. The use of minimally invasive interventional surgery for the treatment of pulmonary embolism can not only overcome the defects of large amount of bleeding and trauma in open surger...

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Problems solved by technology

[0004] Application number CN2021109353494, the patent of the invention is: thrombus removal device, discloses a thrombus removal device, but in order to prevent thrombus from overflowing, the device needs to add a shield, the structure is relatively complicated, and it is inconvenient for doctors to operate, and the patent provides The technology is more suitable for the recovery of thrombus with less hardness, but not for the thrombus with greater hardness. Therefore, for thrombus with greater hardness, it is necessary to design a special thrombus retriever and thrombus retrieval system.

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