Miniature endoscopic imaging probe of optical coherence tomography system

Abstract

The invention provides a miniature endoscopic imaging probe of an optical coherence tomography system. The miniature endoscopic imaging probe comprises a single-mode optical fiber assembly; a first gradient refractive index lens assembly arranged outside the emergent end of the single-mode optical fiber assembly in a sleeving manner; a second gradient refractive index lens assembly arranged outside the emergent end of the first gradient refractive index lens assembly in a sleeving manner; and a reflecting microprism connected with the emergent end of the second gradient refractive index lens assembly. According to the miniature endoscopic imaging probe of the optical coherence tomography system, the single-mode optical fiber assembly, the first gradient refractive index lens assembly and the second gradient refractive index lens assembly are arranged, and length scanning and rotary scanning of the miniature endoscopic imaging probe are jointly carried out by pulling and rotating the single-mode optical fiber assembly; meanwhile, by adjusting the sleeving length among the single-mode optical fiber assembly, the first gradient refractive index lens assembly and the second gradient refractive index lens assembly, long-distance work of the small-size miniature endoscopic imaging probe is achieved.

Description

technical field [0001] The invention relates to the technical field of medical imaging equipment, in particular to a miniature endoscopic imaging probe of an optical coherence tomography imaging system. Background technique [0002] Optical coherence tomography (OCT, Optical Coherence Tomography) has the technical advantages of high resolution and high imaging speed. It can not only provide three-dimensional structural information of biological tissues, but also its non-contact and non-invasive technical characteristics make it more suitable for endoscopy. imaging. [0003] Barrett's esophagus (BE, Barrett's esophagus) refers to a pathological manifestation in which the normal stratified squamous epithelium of the lower esophagus is replaced by metaplastic columnar epithelium, and is also a precancerous lesion of esophageal adenocarcinoma (EAC, esophageal adenocarcinoma). Diagnosis of this condition relies primarily on endoscopy. Endoscopic OCT imaging technology is an imp...

AI Technical Summary

Problems solved by technology

[0006] The invention provides a miniature endoscopic imaging probe of an optical coherence tomography system, which is used to solve the defect of short working distance of the smaller miniature imaging probe in the prior art

Images