Wireless charging method based on ultrasound waves

Abstract

The invention provides a wireless charging method based on ultrasound waves and belongs to the field of wireless charging. According to the method, a pulse type focusing ultrasound wave is output, a cylindrical transduction piece of 1-3 type piezoelectric composite materials converts the focusing ultrasound wave into piezoelectric signals with potential difference, then the piezoelectric signals are converted into direct-current electric signals suitable for charging, and the signals are output to a battery module for charging. The ultrasound wave is used as an energy carrier, charging can be carried out in a non-invasive mode, and charging efficiency is high.

Description

technical field [0001] The present invention relates to the field of medical devices, mainly refers to the use of ultrasonic waves to realize the charging of active medical equipment implanted in the human body, and more specifically, relates to a wireless charging method based on ultrasonic waves. Background technique [0002] Active implantable medical devices refer to implantable medical devices that are partially or fully implanted into the human body through shells or medical means, or implanted medical devices that are inserted into natural orifices through medical means and intended to remain in the body, relying on electrical energy or other energy sources to help patients To realize or restore the function of a system or organ, the existing active implanted devices mainly include implantable cardiac pacemakers, implantable cochlear implants, implantable neurostimulators, implanted electromechanical cardiac circulatory systems, etc. Such implantable medical devices a...

AI Technical Summary

Problems solved by technology

[0007] First of all, the receiving equipment for receiving external energy output signals located in the body is relatively complicated, and there are other energy-consuming equipment except active medical equipment, which increases the consumption of energy supply equipment in the body, which leads to the user's power supply for functional equipment. The time and frequency of replenishment becomes larger, and excessively frequent charging of functional devices will also reduce the performance of the active medical device itself, which invisibly increases the risk of accidents for users

[0008] Secondly, since there are additional components in the body other than active medical equipment and power supply functions that are not related to direct power supply, the volume or shape of the implanted equipment becomes larger, which in turn increases the difficulty of implanting active medical equipment.

[0009] In addition, when the existing non-intrusive power supply equipment is charged, it takes a long time to fully charge once, and the power conversion efficiency of the energy conversion components located in the body is not high, and the charging time is too long during the charging process. Long, the internal heat generated by ultrasonic waves will often damage the skin at the charging site, causing redness and swelling.

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