Current-Based RF Driver for Pulsed Electromagnetic Field Applicators
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Solution Overview
Problem
Current pulsed electromagnetic field (PEMF) systems are complex and heavy due to the need for multiple energy sources and extensive cabling, which increases cost and reduces patient comfort, and often require feedback sensors for high-power applications, making them expensive and cumbersome.
Innovation Solution
A single current-driven RF driver system that generates pulsed current signals, allowing multiple applicators to be controlled from a single unit, eliminating the need for feedback sensors at each applicator and reducing complexity by using current-based rather than voltage-based systems, which simplifies the apparatus and allows for more consistent and targeted energy delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If multiple energy sources and extensive cabling are used in PEMF systems, then high-power delivery capability is achieved, but device complexity and weight increase
Solution Approach 1:
The patent combines multiple energy sources and cabling systems into a single integrated RF driver unit. This single unit provides all necessary energy delivery functions, eliminating the need for separate power sources at each applicator and reducing overall system complexity while maintaining high-power delivery capability.
Solution Approach 2:
The RF driver is designed as a universal multi-functional unit that can deliver energy to multiple different applicators simultaneously or sequentially. This single device performs the functions previously requiring multiple specialized energy sources, reducing device complexity while maintaining versatility and power delivery capability.
2Reliability
If feedback sensors are installed at each applicator for high-power applications, then energy delivery control is improved, but device complexity and cost increase
Solution Approach 1:
The patent extracts the feedback sensing function from the applicator units and relocates it to the central RF driver. This eliminates the need for feedback sensors at each applicator while maintaining precise energy delivery control, thereby reducing device complexity and cost.
Solution Approach 2:
The RF driver acts as an intermediary that provides centralized monitoring and control of energy delivery to all applicators. By serving as a central control point, it maintains reliable energy delivery control without requiring distributed sensing components at each applicator location.
3Adaptability or versatility
If voltage-based systems are used, then energy delivery flexibility is achieved, but system complexity and weight increase
Solution Approach 1:
The patent inverts the conventional voltage-based control approach by implementing a current-based control system. Instead of controlling voltage and measuring current as a secondary parameter, the system directly controls and measures current, simplifying the control architecture while maintaining energy delivery flexibility through programmable current waveforms.
4Ease of operation
If multiple applicators are connected to separate RF drivers, then independent control of each applicator is achieved, but device weight and bulk increase
Solution Approach 1:
The patent merges multiple RF driver functions into a single integrated unit that can independently control multiple applicators. This consolidation eliminates the weight of multiple separate driver units while maintaining independent applicator control through electronic switching and programmable control sequences.
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 solution reduces the complexity and weight of PEMF systems, enhances treatment consistency and effectiveness by directly controlling the magnetic field, and increases patient comfort through reduced bulk and improved ease of use, while maintaining efficient energy transfer and therapeutic efficacy.
Implementation Method 1
each applicator comprising a coil circuit configured to receive the pulsed current signal and to emit a PEMF signal comprising a magnetic field signal
Data Source
AI summary
The apparatuses can comprise a controller including a RF driver configured to generate a pulsed current signal and one or more applicators coupled to the controller. Each applicator can include a coil circuit configured to receive the pulsed current signal and to emit a pulsed electromagnetic field signal comprising a magnetic field signal.