Capacitive Coupling Nerve Stimulator for Higher Transcutaneous Power
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Solution Overview
Problem
Existing transcutaneous energy transmission systems, such as radio frequency and non-contact transformers, face limitations in efficiently supplying power to high-power implanted devices like artificial hearts due to short transmission distances and low energy transmission efficiency, particularly with large air gaps.
Innovation Solution
A capacitive coupling-based nerve electrostimulation system that utilizes capacitive coupling for energy transmission, incorporating stimulator and energy controller coupling capacitor poles, compensation resonant networks, rectification circuits, and harmonic communication modules to enhance power transmission and data exchange.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If radio frequency power supply technology is used for energy transmission, then electrical energy can be transmitted from in-vitro to in-vivo, but the transmission distance is limited and cannot supply high-power devices
Solution Approach 1:
The patent changes the working frequency parameter from radio frequency to lower frequency range, and adjusts the impedance matching parameters to optimize power transmission at longer distances. This allows the system to transmit higher power over extended distances by operating at parameters better suited for the application rather than using conventional radio frequency
Solution Approach 2:
The patent employs dynamic impedance matching and adjustable coupling coefficients that can be modified in real-time based on transmission distance and load requirements. This dynamic adjustment enables the system to maintain optimal power transmission efficiency across varying distances, resolving the contradiction between transmission distance and power delivery
2Ease of operation
If non-contact transformer with large air gaps is used, then transcutaneous energy transmission can be achieved, but energy transmission efficiency is adversely affected due to large leakage inductance
Solution Approach 1:
The patent changes the operating frequency and impedance parameters to compensate for the large air gap in non-contact transformers. By operating at optimized frequency points and adjusting coupling parameters, the system achieves efficient energy transmission across the skin barrier without suffering from excessive leakage inductance losses
Solution Approach 2:
The patent incorporates feedback mechanisms that monitor transmission efficiency and dynamically adjust operating parameters to compensate for losses in non-contact transformer configurations. This feedback control enables the system to maintain high efficiency despite the inherent losses from large air gaps
3Power
If radio frequency antenna is used for direct energy transmission, then electrical energy can be supplied to implanted devices, but transmission distance is short
Solution Approach 1:
The patent fundamentally changes the transmission approach from radio frequency electromagnetic radiation to conductive or near-field coupling mechanisms operating at lower frequencies. This parameter change enables longer transmission distances while maintaining adequate power delivery to implanted devices
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system enables higher electrical power transmission and efficient data communication, expanding its applicability to high-power implanted devices by compensating for reactive power and utilizing harmonics for information modulation.
Implementation Method 1
capacitive coupling electrical energy transmission
Implementation Method 2
stimulator compensation resonant network connected to the stimulator coupling capacitor pole to compensate for reactive power
Data Source
AI summary
A nerve electrostimulation system using capacitive coupling energy transmission, in-vivo nerve electrostimulator, and in-vitro energy controller thereof. The nerve electrostimulation system using capacitive coupling energy transmission includes an in-vivo nerve electrostimulator and an in-vitro energy controller, and may also include a program controller having an upper computer control APP. The in-vivo nerve electrostimulator includes at least one stimulator coupling capacitor pole, a stimulator compensation resonant network, a rectification circuit, a filter capacitor, a main control chip, a stimulator harmonic communication module, and a plurality of sets of stimulation electrodes and corresponding balance capacitors, wherein the stimulator coupling capacitor pole is coupled with an energy controller coupling capacitor pole of the in-vitro energy controller, thereby receiving electrical energy from the in-vitro energy controller and achieving information exchange. The nerve electrostimulation system using capacitive coupling energy transmission can increase the electrical power to be transmitted.