Handheld Laser Therapy Device Diffractive Beam Shaping
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Solution Overview
Problem
Current laser therapy devices are limited by their inability to efficiently disperse laser light into various geometries, high power levels that increase injury risks, inadequate thermal management, and the lack of a portable, handheld design, which hinders effective treatment in diverse therapeutic applications.
Innovation Solution
A cordless, handheld laser therapy device utilizing diffractive optical elements, pulse-width modulation, and advanced thermal management systems, including a temperature sensor and thermoelectric heat pump, to control energy output and maintain efficient operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional refractive lenses are used to expand the laser beam, then the beam can be delivered to the treatment area, but the ability to alter beam geometry is limited and operator compensation is required
Solution Approach 1:
The patent uses diffractive optical elements (DOEs) to change the optical parameters of the laser beam, enabling precise control over beam geometry, shape, and distribution patterns. The DOEs transform the laser output into various geometric patterns (circles, rectangles, triangles, etc.) directly at the source, eliminating the need for operator compensation and providing adaptability across multiple treatment modalities.
2Productivity
If higher power laser levels are used to improve treatment efficacy, then treatment outcomes are improved, but the risk of injury increases
Solution Approach 1:
The patent segments the laser output into multiple lower-power beams arranged in specific geometric patterns. Instead of using a single high-power beam that poses injury risks, the system divides the energy into multiple zones (e.g., multi-spot arrays, distributed patterns) that cover the treatment area more safely while maintaining cumulative therapeutic efficacy. This segmentation reduces the power density at any single point while preserving overall treatment effectiveness.
Solution Approach 2:
The patent incorporates temperature sensing feedback mechanisms that continuously monitor the treatment area and automatically adjust the laser power output. When the sensor detects temperature approaching unsafe levels, the system automatically reduces power or adjusts the beam pattern, providing real-time safety control that prevents injury while maintaining optimal therapeutic dosing.
3Ease of manufacture
If surgical laser technology is repurposed for therapy, then device construction is simplified, but the device lacks portability and handheld capability
Solution Approach 1:
The patent creates a universal laser therapy platform that integrates multiple treatment modalities into a single handheld device. By incorporating interchangeable hoods with different diffractive optical elements, the device can perform various treatment types (acupuncture, pain management, wound healing, etc.) with one instrument, making it both manufacturable from standardized components and highly portable for clinical use.
4Area of stationary object
If multiple laser diodes are used to provide simultaneous treatment over an area, then treatment coverage is improved, but device complexity increases
Solution Approach 1:
The patent merges multiple laser diodes into a single integrated emission source that produces unified geometric patterns. Rather than treating multiple independent laser diodes as separate components requiring individual control, the system combines them into arrays that function as a single optical unit, with the diffractive elements orchestrating the combined output into coherent treatment patterns, thereby reducing perceived device complexity while maintaining area coverage.
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 device achieves flexible beam shaping, reduced risk of injury through precise power control, and enhanced portability, enabling effective treatment across various therapeutic modalities while minimizing heat-related failures.
Implementation Method 1
utilizing diffractive optical elements, pulse-width modulation, and advanced thermal management systems
Implementation Method 2
a target temperature sensing component for measuring and regulating the energy output level
Implementation Method 3
advanced thermal management systems, including a temperature sensor and thermoelectric heat pump
Implementation Method 4
The pulse-width-modulation algorithm comprises instructions which when executed by the one or more microprocessor units switches the electrical power to the one or more laser diodes on and off in a predetermined pattern
Data Source
AI summary
A Laser therapy device that uses temperature sensing to provide clinical feedback and optical elements to produce a projection pattern for a given therapeutic application. Integrated thermal imaging provides the operator with visual representation of the tissue being treated. The optical elements are contained in a replaceable lens assembly that also contains an electronic identification chip to allow the device to automatically reconfigure behavior according to the type of lens. The device includes a wireless data transceiver that can be used for remote configuration and control. The device has the ability to modulate the output power over a wide range using a combination of pulse width modulation (PWM) and analog control techniques. The device provides on-demand audio-visual training.