Solid double-frequency laser light knife

An all-solid-state, laser technology, applied in medical science, surgery, ophthalmic surgery, etc., can solve problems such as increased operating costs, large water and electricity consumption for cooling systems, and complex structures

Inactive Publication Date: 2003-11-26
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

The equipment originally used an excimer gas laser, using ArF gas, which is a toxic gas that can cause harm to the human body, and needs to be replenished after a period of work, which is a potential threat to patients and doctors
Recently, a new semi-solid laser has been developed, which has been used clinically. It not only overcomes the above problems, but also has a better therapeutic effect than gas lasers; but it also has many problems. It uses a krypton lamp for treatment. The pump, coupled with the frequency doubling in the cavity, has poor long-term working stability, and has high requirements on the temperature and humidity of the surrounding environment. structure becomes very complex
So people are also working hard to find an all-solid-state laser that can match it, but so far there has been no report

Method used

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Embodiment Construction

[0007] The implementation and working principle of the technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0008] The structure of the laser surgical light knife used to treat ametropia includes a laser, a scanning galvanometer controlled by a computer, and a laser output system, wherein the structure of the laser is shown in the accompanying drawings. Its laser pump source can choose all-solid-state YAG laser (semiconductor pump), the output wavelength is 530nm, or all-solid-state YLF laser (semiconductor pump), the output wavelength is 526nm, and the maximum output power of the pump source is required to be 5- 6W, is a single horizontal film, the pulse repetition frequency is adjustable from 1-4KHz; the output of its titanium sapphire laser has a wavelength of 830nm; the frequency doubling crystal chooses the LBO and BBO frequency doubling crystal produced by Fujian Institute of Technology, Chinese Aca...

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Abstract

The present invention relates to an all-solid double-frequency laser light knife for operation to cure ametiopia. Said invention is formed from laser, scanning ascillatory mirror controlled by computer and laser output system, and is characterized by adopting solid baser pump, using titanium jewel laser to make gain and utilizing double-frequency crystal two-stage frequency multiplication to output laser whose wavelength is near 208 nm, and transferring said laser into scanning oscillatory mirror. Said invented product is safe, reliable, and good in therapeutic effect, and its stability is greatly raised, its structure is simple and cost is greatly reduced.

Description

technical field [0001] The invention belongs to the improvement of the structure in the medical laser light knife, and relates to the technical field of laser production. Background technique [0002] Refractive errors include myopia, hyperopia and astigmatism, which have caused many inconveniences and obstacles to people in terms of study, further education, employment, work and life. In the past, corrective treatment methods included wearing glasses (including contact lenses) and RK technology (radiotomy); at present, the latest PRK technology is popular in the world, that is, the use of high repetition rate pulsed laser (called light knife) on the cornea of ​​the eye. The anterior surface is "cut" to vaporize it, changing the diopter of the anterior surface of the cornea, thus correcting the refractive error. Due to the predictability, accuracy, safety and reliability of this treatment method, it has been considered as the best treatment method for refractive errors in t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/00A61B18/20A61F9/01
Inventor 赵卫陈国夫王守敬
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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