In vitro power supply type implantation medical instrument

Abstract

The invention relates to an external power supply type implanted medical instrument, which belongs to the technical field of implanted medical instruments and is characterized in that: the device contains an internal implanted medical instrument and an external controller, wherein, the external implanted medical instrument comprises a microcontroller, an energy storage unit, an internal power supply circuit, an internal signal emitting circuit, an internal signal receiving circuit and internal antennas, and the external controller is comprised of a microcontroller, a power source, an external power supply circuit, an external signal emitting circuit, an external signal receiving circuit and external antennas. The implanted medical instrument supplies power by the external power supply circuit of the external controller and can carry out internal electrical stimulation or physiological signal measurement; by selecting a pulse position modulation manner (PPM), a wireless communication modulation uses data signaling and a request-response manner to carry out communication and power supply control. The external power supply type implanted medical instrument has the advantages of controlled and accurate power supply, big available power, etc.

Description

technical field [0001] The invention relates to an implanted medical instrument, in particular to an implanted medical instrument with external power supply. The externally powered implantable medical instrument is a device that uses percutaneous wireless power supply and PPM communication to determine power supply parameters and perform electrical stimulation or physiological signal detection. Background technique [0002] Implanted medical devices generally use small implanted devices to generate electrical pulses, such as implanted cardiac pacemakers, brain pacemakers, nerve stimulators, and muscle stimulators; or use small implanted devices for physiological signal detection, such as ECG Recorder. Most of these small implants are powered by primary batteries, and consist of an implanted part inside the body and a control part outside the body, and information is exchanged between the two through two-way wireless communication. [0003] Implantable medical instruments p...

AI Technical Summary

Problems solved by technology

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 to the patient, but also brings huge economic pressure to the patient due to the high price.

[0004] In order to prolong the service life of implanted medical instruments, people have developed externally powered implanted medical instruments, such as the passive RF spinal cord stimulators proposed in US patents US3724467 and US5002053, but these products only include coils and electrodes internally. Basic electrical components, through external control of pulses, lead to the functions they can achieve are too simple to meet the needs of treatment

[0005] The Chinese invention patent "Optimized Positioning Energy Transmission Device for Implantable Electric Stimulator" provides an external optimal energy feedback control wireless energy transmission positioning device, but the information fed back by the feedback signal is to reach the internal radio frequency The energy condition of the interface circuit does not reflect whether the electrical stimulation energy applied to the human tissue is sufficient

In addition, while using the external wireless power supply method, the implanted part in the body will inevitably generate heat, and excessive heat will have adverse effects on the human body

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