Multi-LED Therapy Device with Homogeneous Irradiation
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Solution Overview
Problem
Current therapy devices for skin tissue lack the ability to easily adapt to different types of phototherapy, requiring constant illumination with therapeutically effective power density and the capability to combine various phototherapeutic applications.
Innovation Solution
A therapy device featuring multiple LEDs with controllable central wavelengths for performing distinct types of phototherapy, allowing for separate power and irradiation duration control, and optical modules for homogeneous irradiation, enabling the selection of different exposure fields for tailored treatment areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single light source is used for phototherapy, then the device structure is simple, but the adaptability to different phototherapy types is limited
Solution Approach 1:
The device divides the treatment area into multiple exposure fields (first exposure fields and second exposure fields) that can be independently controlled. Each exposure field is associated with specific LEDs emitting at different central wavelengths, allowing selective activation of different phototherapy types in different spatial regions
Solution Approach 2:
The device integrates multiple types of phototherapy capabilities into a single device by providing both first LEDs (for first type of phototherapy) and second LEDs (for second type of phototherapy) with different central wavelengths. The control device enables the same device to perform different therapeutic functions by selectively activating different LED groups
2Reliability
If constant illumination is used to maintain therapeutically effective power density, then the therapy effectiveness is ensured, but the energy consumption increases
Solution Approach 1:
The control device enables selective and sequential activation of different LED groups based on the prescribed therapy plan. Instead of continuous operation of all LEDs, the system activates only the required exposure fields at the required times, maintaining therapeutic effectiveness while reducing overall energy consumption
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
Enables flexible and homogeneous irradiation for various phototherapeutic applications, including antimicrobial photodynamic therapy and regenerative photobiomodulation, with adjustable power densities and irradiation parameters to treat diverse skin conditions effectively.
Implementation Method 1
a multiple arrangement of a plurality of first LEDs with a first central wavelength and a plurality of second LEDs with a second central wavelength
Implementation Method 2
a multiple arrangement of a plurality of first LEDs with a first central wavelength and a plurality of second LEDs with a second central wavelength
Implementation Method 3
each first LED and each second LED each having an optical module assigned to the lateral limitation of the radiation in an exposure field
Data Source
Figure 1
Figure 2~3
Figure 4A~4B
AI summary
A therapeutic device for irradiating a surface (20) of a tissue, in particular skin tissue, is described, which in a multiple arrangement comprises one or more first LEDs (22) with a first central wavelength and one or more second LEDs (26) with a second central wavelength, wherein the first central wavelength is suitable for performing a first type of phototherapy and the second central wavelength is suitable for simultaneously performing a second type of phototherapy on the tissue, wherein the one or more first LEDs (22) and the one or more second LEDs (26) are separately controllable with respect to their power and irradiation duration as electrical operating parameters, and each first LED (22) and each second LED (26) is each assigned an optical module (28) for laterally limiting the emission in an exposure field (40, 50).so that first exposure fields (40) are assigned to the several first LEDs (22) and second exposure fields (50) to the several second LEDs (26), wherein the first and second exposure fields (40, 50) overlap on the surface (20) of the tissue to form a common irradiation area (52), so that each first and second exposure field (40, 50) can be irradiated with a power and energy density above a therapy threshold indicated for the first and second types of phototherapy with the most homogeneous power distributions possible.