Mechanical thrombectomy catheter device

Abstract

The invention discloses a mechanical thrombectomy catheter device, and belongs to the technical field of vascular intervention medical instruments. The device comprises a suction crushing head, a suction guide pipe, a spiral spring blade, a cutting blade and a driving handle, the suction crushing head is of a tubular structure, the near end of the suction crushing head is fixed to the far end of the suction catheter, an end face limiting part is arranged in an opening in the far end of the suction crushing head, and a hollowed-out groove hole is formed in the side face of the suction crushing head. Cutting blades are fixed to the outer side of the circumference of the far end of the spiral spring blade, the spiral spring blade penetrates through the suction catheter, the far end of the spiral spring blade is inserted into the suction crushing head and limited to the inner side of the end face limiting part, and the cutting blades are located on the inner side of the groove hole. And the near end of the suction catheter is hermetically connected with a driving handle for driving the spiral spring blade to rotate. The spiral spring blades drive the cutting blades to rotate, the cutting blades can crush high-consistency large thrombus adsorbed in the groove holes into small thrombus blocks, and the small thrombus blocks are conveniently transferred and discharged out of the body.

Description

technical field

[0001] The invention relates to a mechanical thrombectomy catheter device, which belongs to the technical field of vascular interventional medical devices. Background technique

[0002] Abnormal blood flow in blood vessels, such as blood turbulence, slow flow, etc., can lead to the formation of thrombus, blockage of blood vessels or narrowing of blood vessels, resulting in restricted blood supply in the downstream area of ​​the vascular system. This hemodynamic abnormality can cause a series of adverse consequences such as tissue hypoxia, abnormal intravascular pressure, increased cardiac load and heart failure. When the thrombus is located in the neurovascular system, it may cause stroke; when the thrombus is located in the deep venous system of the lower extremities, it may cause swelling or paralysis of the lower limbs; when the thrombus is located in the pulmonary vascular system, it may cause pulmonary embolism, resulting in death of the patient. Theref...

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