A high-flow pulsating electromagnetic blood pump and a left ventricular counterpulsation assisting system including it

Abstract

The invention discloses a high-flow pulsating electromagnetic blood pump, which comprises a mounting bracket. At least two magnetic pushing devices mounted on the support surface, the magnetic pushingdevices comprising a drive coil, a permanent magnet piston, a two-way joint, an inner bag and a magnetic shielding cylinder; At least one set of linkage assemblies for linkage of permanent magnet pistons in two of the magnetic propulsion devices of the same set reciprocating alternately; A processor for controlling a control circuit of the driving coil by a set rhythm or according to an electrocardiogram signal of a human body surface; And an electrocardiogram electrode for detecting and transmitting a body surface electrocardiogram signal of the human body to the processor. The invention integrates a plurality of magnetic pushing devices and is linked by the linkage components in two groups, thereby effectively reducing heat generation, increasing the power of the whole machine in multiple, simultaneously increasing the flow rate, and effectively improving the working condition. It can also be controlled according to extracorporeal electrocardiogram signals, which can avoid increasing the afterload of myocardium in systolic phase.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic pumps, and in particular relates to a high-flow pulsating electromagnetic blood pump and a left heart counterpulsation auxiliary system comprising it. Background technique [0002] Circulatory dysfunction is the main component of multiple organ dysfunction syndrome (MODS). Among them, heart pump failure is one of the main reasons. Heart pump failure often occurs in acute myocardial infarction, cardiac tamponade, severe acute myocarditis, dilated cardiomyopathy waiting for transplantation, after cardiac surgery, etc. In the treatment, in addition to active treatment of the primary disease, drug therapy and heart transplantation, assisted circulation is an important treatment. Assisted circulation includes continuous renal replacement therapy (CRRT), intra-aortic balloon pump (IABP), and extracorporealmembrane oxygenation (ECMO). [0003] 1. CRRT [0004] Renal replacement therapy (renal...

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Problems solved by technology

Contraindications include: Mechanical ventilation therapy for more than 7 days is a relative contraindication, and more than 10 days is an absolute contraindication, because long-term mechanical ventilation can cause irreversible damage such as lung tissue fibrosis and severe barotrauma, and severe organ function Injury, such as brain, lung, kidney function damage, etc., long-term severe shock, it is not expected to get a good effect

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