Photonic Crystal Photodynamic Therapy Apparatus

Abstract

A photonic crystal photodynamic therapeutic apparatus comprises a power switch, a therapeutic apparatus control device, a pump laser, a human-computer interface operating device, an apparatus body and a support, wherein a photonic crystal filtering lens is arranged at the output end of a laser transmitter and is covered with a photonic crystal film with the micron-sized thickness; the photonic crystal film is composed of a bottom layer, a middle layer and an outer layer; the bottom layer and the outer layer are respectively formed by laying cadmium telluride layers and silicon dioxide layers alternately; the middle layer is a tantalum pentoxide layer. By the utilization of characteristics of photonic crystals, the good filtering property of radiation light of the photodynamic therapeutic apparatus is achieved, a large amount of light which is required for treating cancer and is of a specific wavelength can penetrate through, and therefore the color purity of a radiation source of the photodynamic therapeutic apparatus is improved, the utilization ratio of light is improved, time needed for treating cancer is shortened, and the treatment efficiency of cancer is improved.

Description

technical field [0001] The invention relates to the technical field of cancer treatment medicine, in particular to a photonic crystal photodynamic therapy instrument for treating cancer by using photonic crystal technology. Background technique [0002] Photonic crystal is a new type of optical microstructure material whose dielectric constant changes periodically with space. From the perspective of the crystal structure, the atoms inside the crystal are arranged periodically and orderly. It is the existence of this periodic potential field that causes the moving electrons to be scattered by the Bragg of the periodic potential field, thus forming an energy band structure. There may be a band gap between them, that is, the photonic band gap. The most notable feature of photonic crystals is to suppress electromagnetic waves of certain frequencies, generate photonic band gaps, and achieve excellent filtering performance for light. [0003] The Ayla photodynamic therapy device...

AI Technical Summary

Problems solved by technology

However, most of the light sources used in the photodynamic therapy devices currently on the market are semiconductor laser emitters, and the emitted light often contains light of various bands, and there is also a lot of loss when the light propagates.

Although the irradiation light obtained in this way can also achieve the purpose of treatment, because the color purity of the obtained irradiation light is not high, the utilization rate of light is not high, and the transmittance of light is not high, so it is necessary to carry out treatment in the treatment of cancer. A long time, seriously affecting the efficiency of cancer treatment

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