Light uniformizing device of lateral strip-shaped distributed light source

Abstract

The invention aims to design a strip-shaped distributed uniform light source, namely a lateral emergent light source formed by using a prism to make single beam of collimation laser form a virtual double-way light source and then adjusting the light source uniformly distributed in a strip-shaped zone. The light source can be used for a laser thermally induced hemostasis scalpel, namely the strip-shaped distributed light source irradiates a metal strip and then utilizes a photothermal conversion effect to further uniformize temperature and achieves tissue coagulation, cutting and other operations in a clinic endoscope environment. Compared with energy devices such as high-frequency electrotomes and ultrasonic hemostasis scalpels, the laser hemostasis scalpel has lower leakage current and higher coagulating speed, accordingly has higher operation safety and higher hemostasis and cutting speed, and can be also used in other illumination systems having stricter system volume requirements and needing to achieve lateral uniform illumination.

Description

technical field [0001] The invention belongs to the field of bio-optics, and realizes the uniform distribution of light irradiation through the light guide element, and the uniform strip light source further irradiates the metal to realize the coagulation and cutting operation of the tissue by means of the photothermal effect; it can also be used in other fields that require uniform lateral light in a small volume. Apparatus for radiation therapy. Background technique [0002] The traditional laser scalpel, which achieves tissue coagulation and cutting with high focusing ability, is suitable for surgical operations that can directly contact the treatment target, and is widely used in skin, ophthalmology, oral cavity, open surgery and other fields. However, due to the high power density of the focused laser beam or fiber optic beam at the focus point or the light output position, it is easy to cause local carbonization, perforation or inability to effectively close the blood ...

AI Technical Summary

Problems solved by technology

However, due to the high power density of the focused laser beam or fiber optic beam at the focus point or the light output position, it is easy to cause local carbonization, perforation or inability to effectively close the blood vessel, and the energy density at the point of action is difficult to control, which makes it difficult for the focused laser scalpel to meet the requirements of The need for blood vessel coagulation and cutting in the narrow and long environment of the endoscope

At the same time, in other fields of phototherapy where irradiance needs to be limited, the low-illuminance conversion can only be achieved by means of beam expansion and other methods, and the irradiance in the direction of the optical axis can only be reduced, and then the side illumination can be realized through a 45-degree reflector. , making the system bulky

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