Percutaneous closed-loop control charging device for implantation type medical treatment instrument

Abstract

The invention discloses a percutaneous closed-loop control charging device for implantation type medical treatment instrument and belongs to the technical field of implantation medical instrument. The percutaneous closed-loop control charging device for implantation type medical treatment instrument comprises an external charger and an internal implantation type medical instrument. An external energy transmitting coil is a large-size flat magnetic core coil, and an internal energy receiving coil is a hollow coil; the external energy transmitting coil transmits electromagnetic energy by adopting a resonance electromagnetic coupling manner with parallel central shafts; and the electrical energy obtained by the internal energy receiving coil charges an internal rechargeable battery through an internal charge control circuit. The closed-loop control charging device communicates in a pulse position modulation manner for closed-loop control to ensure the energy received by the implantation medical instrument in different charging phases to be within the normal range, effectively control the heating and increase the safety; the closed-loop control charging device calculates the efficiency by the internal feedback parameter to realize counterpoint prompt and increase the charging efficiency. The percutaneous wireless charging method can charge the implantation type medical instrument by a titanium casing, is safe and reliable in charging, and can be applied to all types of implantation type medical instruments equivalent to a deep brain stimulator in power level.

Description

technical field [0001] The invention relates to a percutaneous closed-loop control charging device for implantable medical instruments, belonging to the technical field of implantable medical instruments. Background technique [0002] There are many types of implantable medical devices, and their application range is also very wide, such as cardiac pacemakers, brain pacemakers, muscle stimulators, cochlear implants, etc. All kinds of implantable medical devices are generally expensive, but most of them have a short lifespan. The main factor limiting the life of implantable medical devices is the capacity of the battery. Most of the existing implantable medical devices are powered by lithium primary batteries with high energy density. Generally, implantable medical devices only have a lifespan of about 3 to 5 years. Once the battery energy is exhausted, the patient has to undergo surgery again and replace the implanted medical device, which not only causes physical trauma t...

AI Technical Summary

Problems solved by technology

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a safe and reliable percutaneous wireless closed-loop control charging device that can meet the requirements of implantable medical instruments such as deep brain stimulators. The hollow coil realizes charging from outside the body to the medical instrument implanted in the body. Through closed-loop control, the amount of energy received in the body can be effectively controlled to prevent the impact of the high temperature of the medical instrument in the body on the human body. At the same time, the external charger can be designed through the circuit. Guarantee that there is no problem of fever exceeding human body temperature

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