Wireless charging method and device for cardiac pacemaker based on magnetic resonance

Abstract

An embodiment of the invention provides a cardiac pacemaker wireless charging method and apparatus based on magnetic resonance. In the method, a cardiac pacemaker transmits a detected current value of a battery in the cardiac pacemaker to a medical program-controlled device; after the medical program-controlled device determines that the power value is less than a set threshold, electric power is converted into an electromagnetic wave; a resonant body in the medical program-controlled device and a resonant body in the cardiac pacemaker produce magnetic resonance; the electromagnetic wave is transmitted to the resonant body in the cardiac pacemaker; a resonant circuit in the cardiac pacemaker converts the electromagnetic wave into electric power; and the electric power is used for charging the battery in the cardiac pacemaker. According to an embodiment of the invention, the cardiac pacemaker can be effectively charged outside a human body, restrictions of the battery power on the service life of the cardiac pacemaker can be overcome, the requirement for special features can be met, the working life of the pacemaker is effectively extended, and cardiac pacemakers of all types can truly achieve "lifelong use once implanted ".

Description

technical field [0001] The invention relates to the technical field of human body wireless power transmission, in particular to a magnetic resonance-based wireless charging method and device for a cardiac pacemaker. Background technique [0002] Under normal circumstances, the sinoatrial node in the right atrium of the human heart can automatically and rhythmically send out physiological electrical pulses, and send instructions to various parts of the heart through the myocardial nerve conduction system to make the myocardium contract, the heart beat, and pump blood to the whole body. If the nerve conduction system is impaired or the sinoatrial node cannot send out electrical impulses regularly, the heart will experience arrhythmia, or even stop beating, endangering the life of the patient. The artificial cardiac pacemaker can give direct electrical stimulation to the diseased heart according to the need, and artificially make the heartbeat normal. It is mainly used to treat...

AI Technical Summary

Problems solved by technology

At present, the batteries of implantable cardiac pacemakers at home and abroad are disposable batteries, which cannot be supplemented with energy. When the battery consumes about 85% of the power (generally about 5 to 7 years), the battery supply voltage drops, and the output The pulse amplitude decreases accordingly. When the battery capacity further decreases, it will affect the normal operation of the pacemaker. When the output pulse energy is not enough to capture the heart rhythm, it must be replaced in time and a new pacemaker must be re-implanted.

Especially for pacemakers with certain power-consuming functions, such as defibrillation pacemakers, the battery energy drops sharply after the defibrillation function is activated, resulting in a significantly shortened service life

Therefore, the biggest defect of current implantable cardiac pacemakers is that the battery life is limited, and eventually the pacemaker needs to be replaced by surgery due to battery depletion, which not only adds new physical pain, surgical risk and economic burden to the patient, And it also restricts the use value of implantable cardiac pacemakers

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