Double wave-length laser therapeutic apparatus

Abstract

A dual-wavelength laser therapy apparatus has the Er:YAG laser system and the Nd:YAG laser system for outputting the 2940 nm and 1064 nm laser beams, which are transmitted via a single optical fibre made of sapphire or fluoride glass. Its laser cutting function has high gasifying speed, resulting in high staltic effect.

Description

technical field [0001] The present invention relates to laser medical equipment. Background technique [0002] In recent years, the application of solid-state laser in medical treatment has made great progress. Many early solid-state laser medical machines were basically doped with Nd: 3+ Laser crystals are used as laser working substances to produce near-infrared wavelength lasers, such as: 1064nm, 1079nm, 1319nm, 1338nm, 1341nm, etc. [0003] It is well known that the cutting efficiency of tissue can be improved and thermal damage can be reduced by applying near-infrared wavelength close to the water absorption peak in biological tissue. Recently, many research institutes are studying doped Er: 3+ The application of laser produced by laser crystal in medical treatment. Er: Er in YAG crystal 3+ ion from 4 I 11 / 2 state to 4 I 11 / 3 transition, producing 2940nm laser radiation. Since the 2940nm wavelength coincides with the maximum absorption peak of water in biologi...

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Problems solved by technology

However, the Er:YAG laser has a special biophysical effect: the nature of the interaction of 3 μm radiation with water-saturated biological tissue is equivalent to the instantaneous heating of a limited volume, in which the pressure rises, and the accompanying substances (such as blood) rush out of the incision. out, does not produce blood coagulation, and cannot stop bleeding, which can easily cause excessive bleeding and infection of the wound

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