Laser adapter with continuously adjustable light spots and fundus laser therapeutic instrument

Abstract

The invention is applied to the technical field of medical devices, and provides a laser adapter with continuously adjustable light spots. The laser adapter comprises an input optical fiber, and an imaging lens group, a collimating lens and a focusing lens which are arranged on a laser output optical path of the input optical fiber, wherein the imaging lens group carries out imaging on laser, so that first light spots with energy distribution being flat-top distribution are formed, the object space focal plane of the collimating lens and the first light spots are superposed, the focusing lens focuses parallel light beams output by the collimating lens to a light receiving face, so that second light spots are formed, and due to the linkage of the imaging lens group and the collimating lens, the second light spots are continuously adjustable. According to the laser adapter, through the imaging lens group, laser is imaged to form the first light spots in flat-top distribution, and the energy distribution states of the second light spots and the first light spots are basically the same, therefore, the energy of the light spots is uniform, the edges are clear and sharp, the sizes are real and reliable, and the treatment effects are obviously improved; through the linkage of the imaging lens group and the collimating lens, the continuous change of the size of the second light spots is realized, therefore, the treatment area can be changed according to the practical pathological changes, and finally, the treatment effect and efficiency are promoted.

Description

technical field [0001] The invention belongs to the technical field of medical devices, in particular to a laser adapter with continuously adjustable light spots and a fundus laser treatment instrument. Background technique [0002] The fundus laser therapy instrument irradiates laser light to the fundus, and the fundus tissue absorbs the energy of the laser to heat up, denature and solidify the protein in the tissue, and achieve the purpose of treating various fundus diseases. At present, it is mainly used clinically to treat central serous chorioretinopathy, retinal hole, retinal detachment, diabetic retinopathy, age-related macular degeneration, retinal vein occlusion, retinal vasculitis, retinal tumor and other fundus diseases. [0003] The laser adapter is the main optical transmission system of the fundus laser therapy instrument. It is usually used in conjunction with the slit lamp microscope, and its performance directly affects the quality of the light spot on the f...

AI Technical Summary

Problems solved by technology

In the prior art, the laser adapter with continuously variable spot is generally Gaussian distribution, the center is bright, and the edge is dark. During treatment, the tissue in the center of the spot will be overheated, while the tissue at the edge of the spot does not achieve the therapeutic effect, resulting in uneven treatment.

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