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All-fiber endoscopic OCT probe based on tapered structure

A tapered optical fiber and all-fiber technology, which is used in eye testing equipment, medical science, diagnosis, etc., can solve the problems of reducing the imaging sensitivity of the endoscopic OCT system, increasing the length of the probe hard end, and other disadvantages, so as to expand the effective imaging. range, improved light efficiency, and low cost

Active Publication Date: 2015-12-30
宁波核芯光电科技有限公司
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  • Application Information

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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

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  • All-fiber endoscopic OCT probe based on tapered structure
  • All-fiber endoscopic OCT probe based on tapered structure
  • All-fiber endoscopic OCT probe based on tapered structure

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Embodiment Construction

[0024] 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.

[0025] Such as 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.

[0026] Such as Figure 2a , Figure 2b As shown, the optical assembly has 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 fiber The core multimode fiber...

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Abstract

The invention discloses an all-fiber endoscopic OCT probe based on a tapered structure, which comprises an optical component formed by welding multiple sections of fibers, a transmission component and a protective sleeve. The optical component has two structures, wherein one structure is composed of a transmission single-mode fiber, a transition section tapered fiber and a large-core multi-mode fiber, and the other structure is composed of a transmission single-mode fiber and an asymmetric double-tapered fiber. Each tapered fiber is formed by tapering the large-core multi-mode fiber, and mode field diameters at the welding parts of all sections of fibers of the optical component are consistent. The endoscopic OCT probe disclosed by the invention has no need of an optical focusing lens, is compact in structure, high in transmission efficiency and large in range of focal depth, and is very suitable for high-quality OCT imaging of the heart and cerebral vessels.

Description

technical field [0001] The invention belongs to the field of endoscopic optical coherence tomography, in particular to an all-fiber endoscopic OCT probe based on a tapered structure. technical background [0002] 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. Non-invasive high-resolution real-time in vivo imaging of skin and other in vitro tissues and organs. 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 internal tissues of the human body under low-invasive conditions, which provides the possibility for OCT to perform high-resolution real-time in vivo imaging of internal human tissues. At present, endoscopic optical coherence tomogra...

Claims

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Application Information

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