Photodynamic therapy system with visualization and light spot boundary display function

Abstract

The invention discloses a photodynamic therapy system with a visualization and light spot boundary display function. According to the system, an optical synchronization module and an optical multiplexing module are additionally adopted; the optical synchronization module performs synchronous chopper modulation on therapy laser through using the exposure and readout time sequence signals of an electronic CCD or CMOS optical system so as to make output pulse therapy laser keep synchronous with an exposure stage and a readout stage, so that the visualization of a tissue image can be realized; an optical coupler in the optical multiplexing module is adopted to couple indication light and the pulse therapy laser; the coupled light and pulse therapy laser are outputted to an tissue through an optical fiber; and since the light emission regions of the coupled pulse therapy laser and indication light are identical, and therefore, the boundary of the therapy light spot can be displayed in real time though identifying the boundary of the indication light spot, and a doctor can intuitively see the position relation of the therapy light spot and the tissue where a lesion exists, and blind manipulation of the doctor by means of experience can be avoided, and the accuracy and safety of therapy can be improved.

Description

technical field [0001] The invention relates to the technical field of photodynamic therapy, in particular to a photodynamic therapy system with the functions of visualizing and displaying light spot boundaries. Background technique [0002] With regard to cancer, in the current treatment methods, if surgical treatment is adopted, since the operation requires a thoracotomy, it will cause greater trauma to the patient's body; if radiotherapy and chemotherapy are used, due to the strong systemic side effects of radiotherapy and chemotherapy, it will reduce the body's normal immune system. Function, the quality of life of patients after treatment is poor, and the long-term survival rate is not ideal. Facing the current status of the treatment of malignant tumors, it is urgent to develop new technologies for targeted therapy with less trauma to the body and less toxic side effects. [0003] Photodynamic therapy (PDT) is a new technology that conforms to the development directio...

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a photodynamic therapy system with the function of visualizing and displaying the boundary of the light spot, aiming at solving the problem that the display screen is bright white due to the high output power of the photodynamic therapy laser light source in the prior art, resulting in During the whole treatment process, the doctor cannot directly see the tissue image and the treatment position of the treatment laser, and cannot judge the response of the lesion, which greatly reduces the technical problems of treatment accuracy and safety.

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