artificially assisted blood pumping device

Abstract

The invention discloses an artificial auxiliary blood pumping device, which comprises a flexible transmission structure, a driving module and a control module. The distal end of the flexible transmission structure is provided with a blood pumping impeller. A drive unit, the slave drive unit is arranged at the proximal end of the flexible transmission structure, the slave drive unit, the flexible transmission structure and the blood pumping impeller together form a catheter device; the main drive unit is connected to the control module; The slave driving unit includes a driven rotor with magnets and a sealed spacer sleeve. The main driving unit is composed of a motor winding coil and a motor skeleton. The hollow part of the motor winding coil and the driven rotor are inserted into each other to form a magnetic coupling structure. In the present invention, the main drive unit and the slave drive unit are arranged separately, which greatly improves the transmission efficiency and the overall stability of the system while ensuring the sealing.

Description

technical field [0001] The invention relates to medical equipment, in particular to an artificial auxiliary blood pumping device. Background technique [0002] Percutaneous coronary intervention (PCI) is a common and effective method for the treatment of coronary heart disease. Interventional surgery percutaneously implants a dilation catheter in the femoral artery or radial artery into the vascular lesion site, and clears the lumen of the stenotic or even occluded vascular segment by dilating the stenotic lesion site, thereby improving the blood perfusion of the myocardium. Compared with heart bypass surgery, PCI surgery has lower risks, less trauma, less surgical difficulty, and faster postoperative recovery. In addition, PCI surgery is also applicable to the rescue of acute myocardial infarction, and restores the patient's myocardial state by quickly restoring the blood perfusion of blocked blood vessels. [0003] Artificial left ventricular assist device (LVAD) is a de...

AI Technical Summary

Problems solved by technology

However, its structural design first uses a traditional DC brushless motor to drive the rotation of the driving shaft, and then drives the magnet at the driven end to rotate to achieve magnetic transmission. Multi-stage driving will lead to a decrease in transmission efficiency, and at the same time increase the structural specifications and increase the overall quality. , In addition, the multi-stage transmission increases the process assembly process, which increases the error rate and reduces the system reliability

[0008] The patent document of authorized notification number CN1010820933B discloses a catheter device, which uses a motor to connect a clutch, the clutch is a magnetic clutch with a near magnet unit and a far magnet unit, the rotation of the near magnet unit is driven by a traditional motor, and then the far magnet is driven The rotation of the unit realizes the magnetic transmission. The power transmission is also a multi-stage transmission, which will inevitably lead to a decrease in transmission efficiency and a more complicated structure.

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