Air-tight chamber column reflecting mirror OCT (optical coherence tomography) probe

Abstract

The utility model relates to the technical field of OCT (optical coherence tomography) probes, and discloses an airtight chamber column reflecting mirror OCT probe which comprises a metal protection tube, an arc-shaped cavity is formed in the outer wall of the metal protection tube, a glass tube is fixedly installed in the metal protection tube, and a sealing column is fixedly installed at the rightmost end of the glass tube. According to the utility model, through the sealing design of the glass tube, a white oil medium cannot enter the space between the focusing lens and the cylindrical reflecting mirror, so that the problem of non-uniform medium in a light propagation path caused by vortex generated by liquid in high-speed rotation can be effectively avoided, the imaging quality is improved, the aberration is avoided, and through the shape design of the sealing column, the glass tube and the focusing lens, the imaging quality is improved. The contact area between the glass tube and the sealing column and the focusing lens is larger, the sealing column and the focusing lens can be better fixed through a dispensing process, falling and loosening are prevented, the failure rate is reduced, and the product quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of OCT probe technology, and more specifically, to an airtight chamber column mirror OCT probe. Background Technology

[0002] OCT is an optical analogue of ultrasound, but its axial resolution depends on the coherence characteristics of the light source and can reach 10 μm. Moreover, its penetration depth is almost unrestricted by the transparent refractive media of the eye. It can observe the anterior segment of the eye and display the morphology and structure of the posterior segment of the eye. It has good application prospects in the diagnosis, follow-up observation and treatment effect evaluation of intraocular diseases, especially retinal diseases.

[0003] Furthermore, OCT probes can be inserted into blood vessels and, by scattering near-infrared light and analyzing the time delay of reflected light, convert internal structural information into high-resolution images, allowing for real-time 360° observation of the blood vessel wall from the inside, playing an important role in the medical field.

[0004] Currently, to reduce air interference with ultrasound signals and improve imaging quality, OCT probes require the injection of white oil into the tubing during manufacturing. However, this white oil comes into contact with the probe's interior and optical components. This causes eddies to form within the probe tubing when the probe rotates at high speed. The presence of these eddies leads to uneven refractive index distribution in the white oil medium, causing refraction and scattering of light during propagation. This affects the straight-line propagation of light, and these refraction and scattering phenomena interfere with the imaging process of the OCT system, resulting in blurred or distorted images. Therefore, improvements and optimizations are needed. Utility Model Content

[0005] To overcome the shortcomings of existing technologies, this invention provides an airtight chamber column-reflecting OCT probe, which has the advantage of effectively controlling aberrations.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an airtight chamber column-reflecting OCT probe, comprising a metal protective tube, an arc-shaped cavity formed on the outer wall of the metal protective tube, a glass tube fixedly installed inside the metal protective tube, a sealing column fixedly installed at the rightmost end of the glass tube, one end of the sealing column penetrating into the interior of the glass tube and fixedly installed with a column-reflecting mirror, a focusing lens fixedly installed inside the glass tube, an optical fiber fixedly installed on the left side of the focusing lens, and the left end of the optical fiber penetrating into the outside of the metal protective tube.

[0007] As a preferred technical solution of this utility model, the outer diameter of the focusing lens and the sealing column matches the inner diameter of the glass tube, and the glass tube is fixedly connected to the sealing column and the focusing lens by an adhesive dispensing process.

[0008] As a preferred technical solution of this utility model, the right end of the optical fiber passes through the interior of the glass tube and seals the glass tube. The right end of the glass tube is sealed by a sealing post, thereby achieving sealing on both sides of the glass tube.

[0009] As a preferred technical solution of this utility model, the light beam transmitted by the optical fiber passes through the glass tube, is reflected by the cylindrical mirror, and is then transmitted to the outside of the probe through the arc cavity.

[0010] As a preferred technical solution of this utility model, the focusing lens can control the position of the beam focused outside the probe by changing the distance between itself and the cylindrical mirror.

[0011] As a preferred embodiment of this utility model, both the inner and outer sides of the metal protective tube are located within the white oil medium, while the glass tube is completely sealed, so that there is no white oil medium at the focusing lens and the cylindrical mirror.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model, through the sealing design of the glass tube, prevents the white oil medium from entering between the focusing lens and the cylindrical mirror. This effectively avoids the problem of uneven medium in the light propagation path caused by eddy currents generated by the liquid during high-speed rotation, thus improving image quality and avoiding aberrations. Furthermore, through the shape design of the sealing column, glass tube, and focusing lens, the contact area between the glass tube, the sealing column, and the focusing lens is increased, allowing for better fixation of the sealing column and focusing lens through the dispensing process. This prevents detachment and loosening, reduces the failure rate, and improves product quality.

[0014] 2. During assembly, this utility model adjusts the position of the focusing lens to change the distance between the focusing lens and the cylindrical mirror, thereby further adjusting the focusing position of the beam. This allows for the fabrication of OCT probes with different detection ranges using the same materials, improving the applicability of the device and reducing production costs. Furthermore, the integrated design of the optical fiber and the focusing lens simplifies assembly by requiring only the adjustment of the distance between the focusing lens and the cylindrical mirror, ensuring that the reflected light is directed towards the arc cavity. This improves assembly efficiency and reduces workload. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic cross-sectional view of the present invention.

[0017] Figure 3 This is a schematic diagram of the focusing lens structure of this utility model.

[0018] In the diagram: 1. Metal protective tube; 2. Arc-shaped cavity; 3. Sealing column; 4. Column mirror; 5. Glass tube; 6. Focusing lens; 7. Optical fiber. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] like Figures 1 to 3 As shown, this utility model provides an airtight chamber column-reflecting OCT probe, including a metal protective tube 1, an arc-shaped cavity 2 opened on the outer wall of the metal protective tube 1, a glass tube 5 fixedly installed inside the metal protective tube 1, a sealing column 3 fixedly installed at the rightmost end of the glass tube 5, one end of the sealing column 3 penetrating into the interior of the glass tube 5 and fixedly installed with a column-reflecting mirror 4, a focusing lens 6 fixedly installed inside the glass tube 5, an optical fiber 7 fixedly installed on the left side of the focusing lens 6, and the left end of the optical fiber 7 penetrating into the outside of the metal protective tube 1.

[0021] During the production of this device, the operator first fixes the glass tube 5 inside the metal protective tube 1, then fixes the sealing column 3 to the right end of the glass tube 5, ensuring that the cylindrical reflector 4 on the left side of the sealing column 3 is located below the arc cavity 2. Next, the operator installs the focusing lens 6 inside the glass tube 5. During installation, the operator can adjust the position of the focusing lens 6 to change the distance between the focusing lens 6 and the cylindrical reflector 4, further adjusting the focusing position of the beam. This allows for the production of OCT probes with different detection ranges using the same material. After the focusing lens 6 is installed, the operator seals the leftmost end of the glass tube 5, at which point the entire glass tube 5 is sealed. Finally, the operator attaches a flexible tube to the outer wall of the metal protective tube 1 and fills the flexible tube with white oil medium. At this point, the white oil medium cannot enter the interior of the glass tube 5, completing the production process. In use, the light signal output from the optical fiber 7 is focused by the focusing lens 6, and the focused beam is reflected by the cylindrical reflector 4, finally exiting from the arc cavity 2 to achieve the detection function.

[0022] The sealing design of the glass tube 5 prevents the white oil medium from entering between the focusing lens 6 and the cylindrical mirror 4, effectively avoiding the problem of uneven medium in the light propagation path caused by eddy currents generated by the liquid during high-speed rotation. This improves image quality and avoids aberrations. Furthermore, the shape design of the sealing column 3, glass tube 5, and focusing lens 6 increases the contact area between the glass tube 5, the sealing column 3, and the focusing lens 6, allowing for better fixation of the sealing column 3 and the focusing lens 6 through the dispensing process. This prevents detachment and loosening, reduces the failure rate, and improves product quality.

[0023] During assembly, by adjusting the position of the focusing lens 6, the distance between the focusing lens 6 and the cylindrical mirror 4 is changed, further adjusting the focusing position of the beam. This allows OCT probes with different detection ranges to be made using the same materials, improving the applicability of the device and reducing production costs. Furthermore, the integrated design of the optical fiber 7 and the focusing lens 6 means that during assembly, only the distance between the focusing lens 6 and the cylindrical mirror 4 needs to be adjusted, and the direction of the reflected light needs to be ensured to be towards the arc cavity 2, which improves assembly efficiency and reduces workload.

[0024] The outer diameter of the focusing lens 6 and the sealing post 3 matches the inner diameter of the glass tube 5, and the glass tube 5 is fixedly connected to the sealing post 3 and the focusing lens 6 by an adhesive dispensing process.

[0025] By matching the outer diameter of the focusing lens 6 and the sealing post 3 with the inner diameter of the glass tube 5, the glass tube 5 can better fix the sealing post 3 and the focusing lens 6 after the adhesive is applied, thus ensuring the stability of the structure.

[0026] The right end of the optical fiber 7 passes through the interior of the glass tube 5 and seals the glass tube 5. The right end of the glass tube 5 is sealed by the sealing post 3, thus achieving sealing on both sides of the glass tube 5.

[0027] By sealing both sides of the glass tube 5, the external white oil medium cannot enter the interior of the glass tube 5 and affect the reflection of the focusing lens 6 and the cylindrical mirror 4.

[0028] The light beam transmitted by the optical fiber 7 passes through the glass tube 5, is reflected by the cylindrical mirror 4, and is then transmitted to the outside of the probe through the arc cavity 2.

[0029] The signal beam is transmitted to the outside of the probe for detection by focusing through focusing lens 6 and reflection through cylindrical mirror 4.

[0030] The focusing lens 6 can control the position where the beam is focused outside the probe by changing the distance between itself and the cylindrical mirror 4.

[0031] The staff can adjust the position of the focusing lens 6 to change the distance between the focusing lens 6 and the cylindrical mirror 4, and further adjust the focusing position of the beam, so that OCT probes with different detection ranges can be made using the same materials.

[0032] The metal protective tube 1 has both its inner and outer sides inside the white oil medium, while the glass tube 5 is completely sealed, so that there is no white oil medium at the focusing lens 6 and the cylindrical mirror 4.

[0033] The white oil medium cannot enter between the focusing lens 6 and the cylindrical mirror 4, which can effectively avoid the problem of uneven medium in the light propagation path caused by eddy currents generated by the liquid during high-speed rotation.

[0034] Working principle and usage process of this utility model:

[0035] During the production of this device, the operator first fixes the glass tube 5 inside the metal protective tube 1, then fixes the sealing column 3 to the right end of the glass tube 5, ensuring that the cylindrical reflector 4 on the left side of the sealing column 3 is located below the arc cavity 2. Next, the operator installs the focusing lens 6 inside the glass tube 5. During installation, the operator can adjust the position of the focusing lens 6 to change the distance between the focusing lens 6 and the cylindrical reflector 4, further adjusting the focusing position of the beam. This allows for the production of OCT probes with different detection ranges using the same material. After the focusing lens 6 is installed, the operator seals the leftmost end of the glass tube 5, at which point the entire glass tube 5 is sealed. Finally, the operator attaches a flexible tube to the outer wall of the metal protective tube 1 and fills the flexible tube with white oil medium. At this point, the white oil medium cannot enter the interior of the glass tube 5, completing the production process. In use, the light signal output from the optical fiber 7 is focused by the focusing lens 6, and the focused beam is reflected by the cylindrical reflector 4, finally exiting from the arc cavity 2 to achieve the detection function.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An airtight chamber column-reflecting OCT probe, characterized in that: The device includes a metal protective tube (1), an arc-shaped cavity (2) is formed on the outer wall of the metal protective tube (1), a glass tube (5) is fixedly installed inside the metal protective tube (1), a sealing column (3) is fixedly installed at the rightmost end of the glass tube (5), one end of the sealing column (3) penetrates into the interior of the glass tube (5) and a column mirror (4) is fixedly installed thereon, a focusing lens (6) is fixedly installed inside the glass tube (5), an optical fiber (7) is fixedly installed on the left side of the focusing lens (6), and the left end of the optical fiber (7) penetrates into the outside of the metal protective tube (1).

2. The airtight chamber column-reflecting OCT probe according to claim 1, characterized in that: The outer diameter of the focusing lens (6) and the sealing post (3) matches the inner diameter of the glass tube (5), and the glass tube (5) is fixedly connected to the sealing post (3) and the focusing lens (6) by a dispensing process.

3. The airtight chamber column-reflecting OCT probe according to claim 1, characterized in that: The right end of the optical fiber (7) passes through the interior of the glass tube (5) and seals the glass tube (5). The right end of the glass tube (5) is sealed by the sealing post (3), thus achieving sealing on both sides of the glass tube (5).

4. The airtight chamber column-reflecting OCT probe according to claim 1, characterized in that: The light beam transmitted by the optical fiber (7) passes through the glass tube (5), is reflected by the cylindrical mirror (4), and is transmitted to the outside of the probe through the arc cavity (2).

5. The airtight chamber column-reflecting OCT probe according to claim 1, characterized in that: The focusing lens (6) can control the position of the beam focused outside the probe by changing the distance between itself and the cylindrical mirror (4).

6. The airtight chamber column-reflecting OCT probe according to claim 1, characterized in that: Both the inner and outer sides of the metal protective tube (1) are located in the white oil medium, while the glass tube (5) is completely sealed, so that there is no white oil medium at the focusing lens (6) and the cylindrical mirror (4).

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