Left heart assisting device

Abstract

The invention discloses a left heart assisting device which comprises communicated first pipeline and second pipeline, a blade and a drive device, wherein the first pipeline comprises communicated flow-in part and flow-out part; an angle of 5-45 degrees is formed between the first center vertical line of the flow-in end surface of the flow-in part and the second center vertical line of the flow-out end surface of the flow-out part; the second pipeline comprises a flow-in port, a flow-out port and a lap-joint part between the flow-in port and the flow-out port; the flow-in port is detachably connected with the flow-out end surface; the flow area of the lap-joint part is larger than or equal to the flow area of the flow-out port; the blade is rotatably connected with the inside of the flow-out part; the flow-out part comprises a bottom wall opposite to the flow-out end surface; the blade and the drive device are arranged on the two sides of the bottom wall respectively; and the drive device is used for driving the blade to rotate. The left heart assisting device can be arranged in the heart cavity without damaging the heart structure.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a left heart assist device. Background technique [0002] For patients with left heart failure, when drug treatment is ineffective, a left ventricular assist device (Left ventricular assist device) is usually required. Function. [0003] Current left ventricular assist devices mainly include temporary left ventricular assist devices and long-term left ventricular assist devices. Temporary left ventricular assist devices include partial axial flow pumps and balloon pulsation devices, and their main features are percutaneous puncture or incision, and transvascular insertion. Long-term left ventricular assist devices include pneumatic pumps, centrifugal pumps and partial axial flow pumps. The blood is pumped into the aorta through artificial blood vessels. [0004] The advantage of the temporary left ventricular assist device is that it can be quickly implanted, and the ...

AI Technical Summary

Problems solved by technology

The disadvantages of temporary left ventricular assist devices are: not suitable for long-term assistance; implanted in the neck or groin area, only suitable for bedridden patients, and need sedation during use; the target point of transvascular delivery is susceptible to infection

[0005] The pneumatic pump in the long-term left ventricular assist device has the advantages of easy replacement of consumables and simple design of the driving device. The disadvantage is that the driving device is bulky and not suitable for placement in the body. Adverse psychological effects on patients; pipelines are needed to connect the heart chamber and aorta, increasing energy consumption, and prone to thrombosis

The axial flow pump in the long-term left ventricular assist device has the advantage that the axial flow pump can be built in, but the disadvantages are: the apex of the left ventricle is perforated, which destroys the integrity of the ventricle and has a negative impact on the recovery of ventricular function; the pipeline connects the pump body and the ascending aorta ; Although the pump body has been greatly reduced, it is still located between the epicardium and the pericardium, forming steric hindrance, and aggravating foreign body friction due to the non-physiological curved structure

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