Dual-Wavelength Medical Laser Layout for Lithotripsy and Cosmetology
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Solution Overview
Problem
Existing medical laser technologies are limited in their ability to meet the multi-functional requirements for both lithotriptic cutting and medical cosmetology, as traditional TM: yAG lasers have high water absorption and low hemoglobin absorption rates, making them unsuitable for cosmetological applications.
Innovation Solution
A medical laser device that cooperatively outputs solid-state Q-switch pulse TM: yAG laser and green laser, with the green laser having a wavelength of 532 nm complementarily matched with the TM: yAG laser's 2,025 nm wavelength, allowing for effective wrinkle and epidermal erythema removal and surgical lithotripsy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single-wavelength TM: yAG laser is used, then lithotripsy effectiveness is improved, but cosmetological applicability deteriorates
Solution Approach 1:
The patent implements a dual-wavelength laser system that can output both 2025nm TM: yAG laser and 532nm green laser. The laser device includes two separate laser generators: a TM: yAG laser generator for lithotripsy and a green laser generator for cosmetology. This multi-functional design allows the single device to perform both surgical lithotripsy and medical cosmetology treatments, resolving the contradiction between specialized performance and versatility.
Solution Approach 2:
The laser system is segmented into two independent laser generators, each optimized for specific wavelengths and applications. The TM: yAG laser generator produces 2025nm wavelength laser for lithotripsy, while the green laser generator produces 532nm wavelength laser for cosmetology. This segmentation allows each component to be optimized for its specific function while working together in a unified system.
2Use of energy by moving object
If TM: yAG laser with high water absorption is used, then tissue gasification capability is improved, but hemoglobin absorption capability deteriorates
Solution Approach 1:
The patent changes the wavelength parameter by providing two distinct wavelength outputs: 2025nm for TM: yAG laser with high water absorption for tissue gasification, and 532nm for green laser with high hemoglobin absorption for cosmetology applications. This parameter change allows the system to adapt to different absorption requirements for different medical applications.
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 a multi-functional capability by combining the high water absorption and lithotripsy effectiveness of the TM: yAG laser with the high hemoglobin absorption and cosmetological benefits of the green laser, enabling efficient wrinkle removal and epidermal treatments.
Implementation Method 1
a second totally reflective mirror, a TM: yAG rod, an acousto-optic Q-switch and a 5% spectrum output mirror are coaxially and fixedly mounted in sequence from a laser resonance end to a laser emitting end in the TM: yAG laser generating cavity
Implementation Method 2
an acousto-optic Q-switch
Implementation Method 3
a first totally reflective mirror, a neodymium-doped yttrium aluminum garnet rod, a frequency doubling crystal and a green laser output mirror for outputting green laser into the light mixing cavity are coaxially and fixedly mounted in sequence from a laser resonance end to a laser emitting end in the green laser generating cavity
Implementation Method 4
a frequency doubling crystal for frequency-doubling the 1064 nm laser to generate the green laser with a wavelength of 532 nm
Implementation Method 5
a second totally reflective mirror
Data Source
AI summary
Provided is a medical laser device cooperatively outputting solid-state Q-switch pulse TM: yAG laser and green laser, comprising a shell extending in an axial direction, and an interior of the shell is fixedly connected with a first partition plate in a radial direction; one side face of the first partition plate is fixedly connected with a second partition plate, and the interior of the shell is divided into a TM: yAG laser generating cavity, a green laser generating cavity and a light mixing cavity through the first partition plate and the second partition plate; a second totally reflective mirror, a TM: yAG rod, an acousto-optic Q-switch and a 5% spectrum output mirror are coaxially and fixedly mounted in the TM: yAG laser generating cavity, and a second 45° totally reflective mirror for reflecting laser into the light mixing cavity is fixedly mounted at a laser emitting end of the TM: yAG laser generating cavity.