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Wavelength-tunable laser scalpel

A scalpel and laser technology, applied in the field of laser scalpel, can solve the problems of linear increase in cost, increase the wavelength adjustment range, affect the output performance of the laser scalpel, etc., and achieve the effect of stable power and increasing the wavelength adjustment range.

Active Publication Date: 2021-08-24
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Increasing the crystal aperture can increase the wavelength adjustment range. The disadvantage is that on the one hand, the increase of the crystal aperture needs to be realized by replacing the crystal, which will lead to a linear increase in cost. Output performance of the laser scalpel

Method used

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  • Wavelength-tunable laser scalpel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] figure 1 For the wavelength-tunable laser scalpel provided in Embodiment 1, the wavelength-tunable laser scalpel device in Embodiment 1 of the present invention includes:

[0055] The first high reflection mirror 2-1, two laser gain modules 1, the phase modulator 3, the polarizer 4, the frequency conversion mirror 5, the frequency conversion crystal 6 and the second high reflection mirror 2-2 placed optically coaxially in sequence; also include A beam guiding module 7 , a beam shaping module 8 , a handheld output terminal module 9 and a controller 10 . The beam guiding module 7, the beam shaping module 8, and the hand-held output terminal module 9 are sequentially connected and optically coaxial, and the connection can be rotated and adjusted at any angle. The controller 10 is connected with two laser gain modules 1 for adjusting laser output.

[0056] The laser gain module 1 is used to generate laser light under pumping conditions;

[0057] The first high reflection...

Embodiment 2

[0072] figure 2 A wavelength-tunable laser scalpel device provided in Embodiment 2, a wavelength-tunable laser scalpel device in Embodiment 2 of the present invention includes:

[0073]The first high reflection mirror 2-1, two laser gain modules 1, the phase modulator 3, the polarizer 4, the frequency conversion mirror 5, the frequency conversion crystal 6 and the second high reflection mirror 2-2 placed optically coaxially in sequence; also include Beam guiding module 7 , beam shaping module 8 , handheld output terminal module 9 , controller 10 , indicating laser generator 11 , and guiding mirror 12 . The pointing laser generator 11 is used to generate pointing laser light 11-1. The beam guiding module 7, the beam shaping module 8, and the hand-held output terminal module 9 are sequentially connected and optically coaxial, and the connection can be adjusted at any angle. The controller 10 is connected to the two laser gain modules 1 for adjusting the laser output; the guid...

Embodiment 3

[0091] image 3 A wavelength-tunable laser scalpel device provided in Embodiment 3, a wavelength-tunable laser scalpel device in Embodiment 3 of the present invention includes:

[0092] The first high reflection mirror 2-1, two laser gain modules 1, the phase modulator 3, the polarizer 4, the frequency conversion mirror 5, the frequency conversion crystal 6 and the second high reflection mirror 2-2 placed optically coaxially in sequence; also include Beam guiding module 7 , beam shaping module 8 , handheld output terminal module 9 , controller 10 , indicating laser generator 11 , and guiding mirror 12 . The pointing laser generator 11 is used to generate pointing laser light 11-1. The beam guiding module 7, the beam shaping module 8, and the hand-held output terminal module 9 are sequentially connected and optically coaxial, and the connection can be adjusted at any angle. The controller 10 is connected to the two laser gain modules 1 for adjusting the laser output; the guid...

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Abstract

The embodiment of the invention provides a wavelength-tunable laser scalpel which comprises a first high-reflectivity mirror, at least two laser gain modules, a phase modulator, a polarizing film, a frequency conversion mirror, a frequency conversion crystal and a second high-reflectivity mirror which are sequentially, optically and coaxially arranged, as well as a light beam shaping module, a light beam guiding module, a handheld output end module and a controller. The wavelength adjustment of the laser at the wave band of 6-8 microns is realized by regulating and controlling the gain spectral line in the fundamental frequency light source cavity and adjusting the phase matching angle of the frequency conversion crystal. Compared with an existing wavelength adjusting technology, the wavelength adjusting range can be enlarged, meanwhile, the power stability in the wavelength adjusting process is achieved, and volatility is controlled to be smaller than 1%.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a laser scalpel with tunable wavelength. Background technique [0002] High-precision, low collateral damage laser can be used as a laser knife, and has important application value in biological and medical fields such as tissue cell separation and precision surgery. Brain / spine tumors seriously affect the function and life of the human nervous system. It is extremely important to detect and remove them in time. Due to the abundance of nerve centers and blood vessels, incidental damage to nerve centers and blood vessels in important functional areas during surgery will affect the quality of life of patients and even life. The 6.45μm laser has attracted extensive attention due to its special effect on water and proteins. Based on the laser ablation mechanism of the combination of protein structural denaturation and water absorption providing explosive force when it ac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B18/20
CPCA61B18/20A61B2018/00601A61B2018/00577
Inventor 申玉宗楠彭钦军陈中正薄勇
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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