An ultra-thin small-aperture high-resolution endoscopic microscope objective lens

Abstract

The invention relates to an ultra-thin small-caliber high-resolution endoscopic microscope objective lens, which comprises a first lens, a diaphragm, a second lens, a third lens and a fourth lens arranged in sequence from the object side, and each lens is a spherical lens And they are all separated by air. The first lens has a negative refractive power, its object side is a plane, and its image side is concave; the second lens has a positive refractive power, its object side is a convex surface, and its image side is a convex surface; The lens has positive refractive power, the object side is convex, and the image side is concave; the fourth lens has positive refractive power, the object side is convex, the image side is convex and the maximum light aperture is ≤0.6, the first lens object side to imaging The axial distance of the surface ≤ 4.0mm, and meet 1.1

Description

technical field [0001] The invention relates to the technical field of endoscopic microscope objective lenses, in particular to an ultra-thin small-diameter high-resolution endoscopic microscope objective lens. Background technique [0002] With the continuous development of medical technology, medical endoscopes are often used in clinical diagnosis and treatment. The probe-type confocal microendoscope can send the probe to the designated site through the natural orifice of the human body, and obtain local histological images to achieve accurate diagnosis of small lesions, gastrointestinal lesions and early gastrointestinal cancers. Traditional endoscopy objectives can only provide image information on the surface of the tissue, and due to the limitation of human body structure, the narrow area cannot be reached during routine endoscopy, and biopsy is often required for further diagnosis. However, the current method of ex vivo biopsy is sampling. The general operation is to...

AI Technical Summary

Problems solved by technology

However, for narrow spaces, such as narrow areas of the biliopancreatic duct, high-resolution endoscopes cannot be used, and the doctor may not get cancerous tissue after taking more than 5 samples, resulting in missed detection and delayed treatment.

In addition, the method of in vitro biopsy takes about two weeks. At this stage, the patient's condition may develop rapidly, which is very unfavorable to the patient's treatment. Moreover, endoscopic treatment after the pathological diagnosis of the lesion by routine biopsy will delay Post-treatment time, increasing the patient's pain and psychological and medical burden

This will not only bring pain to the patient and increase the risk of lesion spread, but also require a long wait for pathological test results, resulting in low diagnosis and treatment efficiency

Moreover, the working channel of the traditional endoscope is very narrow, and its diameter is between 1.2mm-4.2mm

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