Replaceable laser unit and array thereof

Abstract

The invention discloses a replaceable laser unit and an array thereof. The replaceable laser unit is composed of a case with a unified appearance and a unified optical interface and a cabinet. As thecase adopts the optical interface with a tapered cavity and a cylindrical cavity, accurate mechanical connection between laser output of the case and fiber output of the cabinet can be realized in a condition with no professional tools, and standardization of output components of case laser components is facilitated. Due to a vertical-type guide rail with an inclined angle, precise positioning between the case and the cabinet can be realized. When a laser component with a different wavelength is replaced, the case in the cabinet only needs to be replaced, switching of laser components with different wavelengths is replaced by switching of the cases, the difficulty for the medical staff to switch the laser wavelengths is greatly reduced, and the promotion rate of laser therapy instruments in the medical field can be improved. According to the replaceable laser array, the cases with different wavelengths can be replaced in the cabinet, multiple wavelength switches can be connected behindmultiple cases, and selective output of the wavelengths can be realized.

Description

technical field [0001] The invention belongs to the field of laser and medical equipment, and in particular relates to a replaceable laser unit and an array thereof for photodynamic therapy. Background technique [0002] Photodynamic therapy (Photodynamic Therapy, PDT) is a new technology that uses photodynamic effect for disease diagnosis and treatment. Its basis is the photodynamic effect. The photodynamic effect is a photosensitization reaction accompanied by biological effects involving oxygen molecules. The process is that the photosensitizer absorbed by the tissue is excited by the laser irradiation of a specific wavelength, and the photosensitizer in the excited state transfers energy to the surrounding oxygen to generate highly active singlet oxygen, and the singlet oxygen and adjacent biological Oxidation of macromolecules produces cytotoxicity, which in turn leads to cell damage and even death. Compared with traditional therapy, photodynamic therapy has the adva...

AI Technical Summary

Problems solved by technology

The wavelength of the laser can only be limited to one, if you want to change the wavelength, only professionals can use professional tools to replace the laser body

In particular, the lasers used in existing photodynamic therapy instruments are all semiconductor lasers, which are coupled and output through optical fibers. The coupling output interface between the semiconductor laser and the optical fiber, and the coupling output port between the optical fiber and the optical fiber require precise mechanical cooperation to achieve high coupling efficiency. , when replacing the laser body, it is difficult to quickly and accurately align

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