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Endoscopic OCT (Optical Coherence Tomography) miniature probe, OCT imaging system and use method

A technology of scanning imaging and inner tube, which is applied in the field of medical devices, can solve the problems of affecting diagnostic results, image deformation, and OCT micro-probe lateral resolution reduction, etc.

Active Publication Date: 2015-08-12
MICRO TECH (NANJING) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] As the key part of the OCT micro-probe, the self-focusing lens has the characteristics of mature processing technology, low production cost, simple structure and easy assembly. Some defects, such as: at a very small size, its numerical aperture is limited, resulting in a decrease in the lateral resolution of the OCT microprobe, especially when using a self-focusing lens with a long working distance will cause a sharp drop in lateral resolution
[0007] At the same time, when the OCT micro-probe is in use, it is generally positioned and protected with a cylindrical plastic transparent sleeve. When the laser passes through the cylindrical plastic transparent sleeve, it is equivalent to passing through a cylindrical negative lens. Occurs, which will cause the circular laser spot to become an elliptical spot, resulting in deformation of the scanned image and affecting the diagnosis result

Method used

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  • Endoscopic OCT (Optical Coherence Tomography) miniature probe, OCT imaging system and use method
  • Endoscopic OCT (Optical Coherence Tomography) miniature probe, OCT imaging system and use method
  • Endoscopic OCT (Optical Coherence Tomography) miniature probe, OCT imaging system and use method

Examples

Experimental program
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Effect test

Embodiment 1

[0050] An OCT microprobe of an OCT endoscopic scanning imaging system, such as figure 1 with figure 2 As shown: the single-mode optical fiber 1 is set in the spring tube 2. The spring tube 2 effectively protects the fragile optical fiber and reduces the resistance when the probe rotates; Obliquely glued with the single-mode fiber 1, the working distance of the OCT probe can be changed by changing the glued distance between the glass rod 3 and the two end faces of the single-mode fiber 1 to achieve the desired working distance, thereby improving the numerical aperture and lateral direction of the OCT probe Resolution; the reflector 5 is a cylindrical reflector and is packaged in a slotted stainless steel tube 6. The reflective surface of the reflector 5 faces the slotted opening of the slotted stainless steel tube 6, so as to reduce the astigmatism of the light source passing through the cylindrical inner tube effect on imaging.

[0051] Such as figure 1 with figure 2As s...

Embodiment 2

[0055] Such as image 3 As shown, an OCT endoscopic scanning imaging system includes a frequency-sweeping laser module, an interference module, a detector module, a data acquisition module, a data processing module, an image display module, an actuator, a balloon catheter, inflation and deflation equipment, and figure 1 with figure 2 The OCT microprobe shown, where,

[0056] The frequency-sweeping laser module includes a high-speed frequency-sweeping laser, a fiber isolator and a fiber coupler, which isolate the optical signal output from the frequency-sweeping laser from the subsequent optical path, preventing the optical signal returned by the subsequent optical path from interfering with the normal operation of the laser; the interference module A fiber-optic Mach-Zehnder interferometer (MZI) or a fiber-optic Michelson interferometer structure can be used. The Mach-Zehnder interferometer structure is mainly composed of two fiber couplers, two fiber circulators and two fi...

Embodiment 3

[0058] An OCT endoscopic scanning imaging system, similar to embodiment 2, the difference is that the balloon catheter is as Figure 4 As shown, it includes: a handle 12, one interface of the handle 12 is a host interface 14, and the other interface is a ventilation interface 13; a double-lumen tube 11 can allow the OCT optical probe to pass through; a balloon 10, the front end of the balloon 10 is blocked and There is a scale on the balloon; the inner tube 9, the concentricity of the inner tube 9 and the balloon 10 deviates no more than 200 microns under 3 atmospheres; the soft head 8 is a solid structure, and one end of the double-lumen tube 11 is connected to the handle 12 , the other end is connected with the inner tube 9 and one end of the balloon 10, the other end of the balloon 10 is connected with the inner tube 9 and the soft head 8, the double-lumen tube 11 is connected with the handle 12 through UV glue, and other parts are welded connected in a way.

[0059] The m...

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Abstract

The invention relates to the technical field of medical apparatus and instruments, and provides an OCT (Optical Coherence Tomography) miniature probe, an imaging system and a use method applied to endoscopic high-resolution OCT imaging. The OCT miniature probe is characterized in that the working distance of the OCT miniature probe can be changed through a lens assembly, and the clear aperture of a self-focusing lens is enlarged so as to improve the numerical aperture and the lateral resolution of the OCT miniature probe. According to the OCT miniature probe, the problems of low lateral resolution of the OCT miniature probe in the traditional OCT system and big possibility of deforming of a scanned image can be solved. Therefore, OCT endoscopic scanning imaging with the OCT miniature probe can be applied to human body tissue narrow space, such as blood vessels, digestive tracts and respiratory tracts.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to OCT scan imaging detection applied to human lumens, and provides an OCT microprobe for OCT endoscopic scan imaging, an OCT imaging system and a use method. Background technique [0002] Optical Coherence Tomography (OCT) has been widely used in the field of ophthalmology diagnosis. This technology is based on the science of optics, electronics and computer technology. OCT has attracted people's attention due to its advantages of high resolution and high-speed imaging, and has begun to be valued and applied in the fields of biomedicine and clinical diagnosis. [0003] Compared with other imaging methods such as CT, ultrasound, and MRI, OCT has extremely high resolution. Compared with traditional laser confocal microscopes, OCT has obvious advantages in imaging depth. Most of the core technologies of traditional optical probes use optical fiber bundles for light transmissi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B1/05A61B1/04A61B1/273
CPCA61B1/00131A61B1/00165A61B1/00172A61B1/04A61B1/05A61B1/07A61B1/267A61B1/273A61B18/12A61M25/10A61B5/0066A61B5/0084
Inventor 奚杰峰高端贵李常青冷德嵘
Owner MICRO TECH (NANJING) CO LTD
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