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All-fiber endoscopic OCT probe based on unit conic structure

An all-optical, single-mode optical fiber technology, which is applied in eye testing equipment, medical science, diagnosis, etc., can solve the problems of increasing the length of the hard end of the probe, reducing the imaging sensitivity and disadvantages of the endoscopic OCT system, and improving the light transmission. Efficiency, expanded effective imaging range, and low cost effects

Active Publication Date: 2017-07-04
宁波核芯光电科技有限公司
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  • Abstract
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Problems solved by technology

However, the multi-step transitional structure increases the length of the hard end of the probe, which is not conducive to curved intravascular imaging, and at the same time introduces additional insertion loss, which reduces the imaging sensitivity of the endoscopic OCT system

Method used

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  • All-fiber endoscopic OCT probe based on unit conic structure
  • All-fiber endoscopic OCT probe based on unit conic structure
  • All-fiber endoscopic OCT probe based on unit conic structure

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Embodiment Construction

[0027] In order to make the purpose, technical solution and advantages of the present invention clearer, the specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0028] like figure 1 As shown, the endoscopic OCT probe of the present invention includes an optical assembly 101 , a transmission assembly 102 , and a protective sheath 103 . The front end of the optical component 101 is fixed inside the protective case 103 , and the gap between them is filled with optical glue 104 . The protective cover 103 can be made of stainless steel, silicon or plastic.

[0029] like figure 2 a. figure 2 As shown in b, the optical components have two structures: one is composed of transmission single-mode fiber 201, transition section tapered fiber 202 and large core multimode fiber 203, transmission single-mode fiber 201, transition section tapered fiber 202, large The core multimode fiber 203 ...

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Abstract

The invention discloses an all-fiber endoscopic OCT probe based on a unit conic structure. The probe comprises an optical assembly formed through fusion of multiple optical fiber sections, a transmission assembly and a protective cover. The optical assembly has two structures, wherein one structure is composed of transmission single mode fibers, transition section tapering fibers and large fiber-core multi-mode fibers; and the other structure is composed of transmission single model fibers and asymmetrical dual tapering fibers. The tapering fibers are formed through tapering of large-fiber core multi-mode fibers; and the mode field diameter at fusion joints of each section of fibers of the optical assembly is consistent. The endoscopic OCT probe disclosed by the invention has the advantages that no optical focusing lens is needed; the structure is compact; transmission efficiency is high; the focus depth scope is large; and the probe is highly applicable to high-quality OCT imaging of heart and cerebral vessels.

Description

[0001] Original application number: 201510467764.6 Original application date: 2015.07.31 [0002] Original title of the invention: An all-fiber endoscopic OCT probe based on a tapered structure technical field [0003] The invention belongs to the field of endoscopic optical coherence tomography, and in particular relates to an all-fiber endoscopic OCT probe based on a unit cone structure. [0004] technical background [0005] Optical coherence tomography (OCT) is a powerful biomedical diagnostic method. Compared with other commonly used medical imaging methods, such as ultrasound imaging, OCT has higher sensitivity and resolution, and can Non-invasive high-resolution real-time in vivo imaging of tissues and organs in vitro such as eyes and skin. However, the imaging depth of OCT in biological tissues is very limited, usually 2-3mm, which restricts its application in a wider range of biomedical fields. Miniaturized and compact endoscopic probes can penetrate deep into the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B3/14
CPCA61B3/14
Inventor 丁志华沈毅邱建榕严雪过
Owner 宁波核芯光电科技有限公司
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