Adaptive LED Irradiation for Uniform Photobiomodulation Dosing
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Solution Overview
Problem
Commercially available devices for photobiomodulation do not deliver an optimal exposure dose due to uniform radiation intensity, which is too high in some areas and too low in others, exacerbated by improper user positioning.
Innovation Solution
A device with multiple radiation sources, each equipped with a distance sensor to adjust radiation intensity based on the distance from the body part, and includes guidance mechanisms to optimize user positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If uniform radiation intensity is delivered by LEDs, then device structure is simple, but radiation dose is non-optimal (too high in some areas, too low in others)
Solution Approach 1:
The patent applies local quality by equipping each radiation source (LED module) with its own distance sensor and control circuit, enabling independent intensity adjustment for each LED based on its specific distance to the body part. This transforms the uniform radiation approach into a localized, adaptive radiation system where each LED delivers optimal intensity to its target area, resolving the contradiction between structural simplicity and radiation dose uniformity.
Solution Approach 2:
The patent implements dynamics by making the radiation intensity adjustable and adaptive rather than fixed. Each LED's intensity is dynamically controlled based on real-time distance measurements, allowing the system to adapt to varying user positions and body shapes. This dynamic adjustment capability enables optimal radiation delivery without requiring complex mechanical positioning systems.
2Manufacturing precision
If distance sensors and intensity control are added to each radiation source, then radiation dose uniformity is improved, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the radiation system into independent modular units, where each LED or LED group operates as a separate controllable module with its own distance sensor and control circuitry. This modular segmentation allows the system to achieve precise local control without requiring a completely complex centralized control system, as each module can function semi-independently.
Solution Approach 2:
The patent implements self-service by enabling each radiation source to automatically adjust its own intensity based on its own distance sensor measurements. Each LED module independently determines its distance to the body and adjusts its emission accordingly without requiring constant external control signals, reducing the complexity of the overall control system while maintaining precise radiation dose uniformity.
3Ease of operation
If user positioning is not optimized, then ease of operation is high, but radiation dose distribution deteriorates
Solution Approach 1:
The patent applies feedback by implementing a closed-loop control system where distance sensors continuously measure the distance between each LED and the user's body, and this information is fed back to the control circuits that adjust LED intensity accordingly. This automatic feedback mechanism eliminates the need for users to precisely position themselves, as the system automatically compensates for positioning variations, thereby maintaining both ease of operation and optimal radiation dose distribution.
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
Ensures uniform radiation intensity across the body by adjusting based on distance and user positioning, enhancing treatment efficacy.
Implementation Method 1
each comprising at least one light-emitting diode arranged to expose to radiation a part of the human or animal body
Implementation Method 2
Photobiomodulation is one of the treatment methods that requires such a device. It is a technique that involves the emission of electromagnetic waves onto the body and aims, among other things, to promote cell regeneration
Implementation Method 3
each radiation source includes a distance sensor configured to estimate a representative value of the distance separating the radiation source and the part of the body exposed to said radiation source
Data Source
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AI summary
A device (10) for exposing a human (910) or animal body to light or infrared radiation, comprising a plurality of radiation sources, each comprising at least one light-emitting diode arranged to expose a part of the body (911, 912, 913, 914) positioned facing the radiation source to radiation, wherein each radiation source comprises a distance sensor configured to estimate a representative value of the distance separating the radiation source and the part of the body exposed to said radiation source, and wherein the intensity of the light or infrared radiation emitted by each radiation source is determined as a function of the distance separating said radiation source and the part of the body exposed to said radiation source. A method for using such a device.