A left ventricular assist device

An auxiliary device and blood pump technology, applied in the direction of suction devices, etc., can solve problems such as poor hemodynamics, easy damage to the integrity of blood cells, blood flow disorder at valves, etc., and achieve the effect of improving the situation of heart-assisted blood pumping
CN102284091AInactive Publication Date: 2011-12-21BEIHANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
BEIHANG UNIV
Publication Date
2011-12-21
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a novel left ventricular assist device, which aims to provide periodic pulsation that is closer to the physiological state to assist in pumping blood for patients with heart failure. It includes four parts: blood pump, artificial blood vessel, power supply and control unit, and power supply and control wire. Wherein, the blood pump is a valveless impedance blood pump. There is no valve in the blood pump, the middle section of the blood pump pipeline is an elastic tube, and the two ends of the elastic tube are respectively connected with rigid tubes of the same diameter. The blood pumping function is realized by periodically compressing the elastic tube through the periodic compression component arranged in the blood pump at a position deviated from the axial center of the elastic tube to generate blood flow driving force.
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Description

technical field

[0001] The invention relates to a left heart assist device. Background technique

[0002] Heart disease is a disease that seriously threatens the health of human beings (especially the elderly), and heart failure is the main reason. At present, heart transplantation is a better surgical treatment option, with a one-year survival rate of 93% and a five-year survival rate of 88%. However, there is a serious shortage of heart transplant donors, so people place their hopes on artificial hearts and various implanted artificial assisting devices.

[0003] Left ventricular assist device is a typical heart assist blood supply device. One end of this device is connected to the left ventricle and the other end is connected to the aorta. When working, the arterial blood in the left ventricle is directly pumped into the aorta. There are mainly two types of existing left ventricular assist devices: one is the axial flow (Rotary blood pumps), which uses external force to...

Claims

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