Wireless charging and body temperature monitoring system for implantable heart pacemaker

Abstract

The invention discloses a wireless charging and body temperature monitoring system for an implantable heart pacemaker, which realizes wireless charging of the implantable heart pacemaker through a magnetic coupling resonance wireless power transmission technology. The system carries out energy transmission by adopting the coupling of two coils, wherein the transmitting coil adopts a rounded-cornerrectangular coil structure and is placed outside the body, and the coil is wound by adopting a copper stranded wire and provided with a ferrite strip; the coil in the body is implemented by adoptinga flexible printed circuit board; and the impedance matching of the transmitting coil adopts LCC compensation topology including an inductor and two capacitors, and the receiving coil is only connected with one capacitor in series to achieve the same resonant frequency. The heart pacemaker is internally provided with an SAW (Surface Acoustic Wave) temperature detection module, and transmits temperature information outside the body by means of wireless transmission. The receiving coil of the wireless charging and body temperature monitoring system is fixed on a housing of the heart pacemaker, the thickness is thin, the number of used electronic components is small, the occupied space is small, the temperature can be checked in real time during the charging period so as to ensure the safety,and the system is applicable to implantable medical electronic equipment.

Description

Technical field [0001] The present invention relates to the field of wireless power transmission, in particular to a wireless charging and body temperature monitoring system for implanted cardiac pacemakers. Background technique [0002] Implantable cardiac pacemakers are playing an increasingly important role in the treatment of various heart diseases, and have been widely regarded as the gospel for patients with cardiovascular diseases. However, the use of disposable batteries limits the life of implantable pacemakers to 5-15 years. When the pacemaker's power is low, the entire pacemaker unit must be replaced, which will bring surgical risks to the patient, including adverse reactions such as rejection, infection, and bruising. [0003] Wireless charging technology makes it possible to replace primary batteries with rechargeable batteries, whose energy is provided by an external power source. For applications in biomedical systems, various energy transfer methods have been stud...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of low energy transmission efficiency of implantable cardiac pacemakers, large volume of implanted components and safety during charging, the present invention provides a wireless charging and body temperature sensor for implantable cardiac pacemakers. The monitoring system adopts the design of the combination of magnetic coupling resonance and LCC topology, which improves the energy transmission efficiency, reduces the use of electronic components, and reduces the volume

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