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Light uniformizing device of lateral strip-shaped distributed light source

A technology of homogenizing device and light source, applied in the field of bio-optics, can solve the problems of difficult control of energy density, reduced irradiance, bulky volume, etc., and achieve the effects of good homogenization, high safety, stable and easy-to-control structure

Pending Publication Date: 2018-04-06
BEIJING INSTITUTE OF TECHNOLOGYGY
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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

Method used

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  • Light uniformizing device of lateral strip-shaped distributed light source
  • Light uniformizing device of lateral strip-shaped distributed light source
  • Light uniformizing device of lateral strip-shaped distributed light source

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Embodiment Construction

[0026] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings, but it is not limited thereto. Any modification or equivalent replacement of the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention should be covered by the present invention. within the scope of protection.

[0027] According to the uniform light device of the embodiment of the present invention, a virtual two-way light source realized by light splitting is designed to solve the problem that it is difficult for the uniform light device of the traditional focused laser scalpel to realize the uniform distribution of energy in the narrow and long area under the environment of the cavity mirror , can also be used in devices that require lateral uniform light irradiation therapy in a small volume.

[0028] Specifically, the virtual two-way light source system mai...

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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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B18/20
CPCA61B18/20A61B2018/00589A61B2018/2035A61B2018/208
Inventor 胡晓明吕晓丹李勤
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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