CN218684353U - Optical projection device for parathyroid auto-fluorescence imaging system - Google Patents
Optical projection device for parathyroid auto-fluorescence imaging system Download PDFInfo
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- CN218684353U CN218684353U CN202221681336.5U CN202221681336U CN218684353U CN 218684353 U CN218684353 U CN 218684353U CN 202221681336 U CN202221681336 U CN 202221681336U CN 218684353 U CN218684353 U CN 218684353U
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Abstract
The utility model discloses an optical projection arrangement for among parathyroid autofluorescence imaging system, including the protection casing, nearly infrared image collection module, miniature projection module, reflection module, dichroic mirror module and processing module, nearly infrared image collection module, miniature projection module, reflection module and dichroic mirror module are all installed in the casing, dichroic mirror module connects in nearly infrared image collection module's front side, the reverse color module is located the dichroic mirror under, nearly infrared image collection module and miniature projection module all pass through fiber connection with processing module, the image of miniature projection module projection out is reflected to dichroic mirror module behind the reverse color module, dichroic mirror module can the filtering disturb the light wave, and dichroic mirror module can reflect the image light wave after the filtering disturbs with nearly infrared image collection module is coaxial. The utility model discloses can provide audio-visual bright spot image for the doctor in the art, can avoid the parathyroid to be wounded by mistake or the problem of excision.
Description
Technical Field
The utility model relates to a projection arrangement especially relates to an optical projection arrangement that is arranged in parathyroid autofluorescence imaging system.
Background
Parathyroid gland has important function for human health, and has small volume, changeable position and color similar to that of other tissues in visible light range. Usually, in thyroid surgery, parathyroid gland is easily injured or cut by mistake, for example, after being injured by mistake or cut by mistake, parathyroid gland function can be caused to be low, and patients can be numb and twitch due to calcium deficiency, and are extremely painful. At present, the identification technology in the operation used clinically has unsatisfactory effect, and the identification in the operation is still judged by the naked eye by the experience of a surgeon, so that the accidental injury rate is extremely high.
Currently, there is a method of irradiating thyroid and parathyroid glands with near infrared laser light of a specific wavelength to allow the thyroid and parathyroid glands to generate autofluorescence and reflect or image-transmit, and then detecting and distinguishing the parathyroid glands from other surrounding tissues. However, the parathyroid gland is displayed by adopting a mode of projecting light spots, or a background picture and a position are displayed on a screen, and the two display modes are not easy to control or are not intuitive enough, so that the probability that the parathyroid gland is accidentally injured or cut is still high.
SUMMERY OF THE UTILITY MODEL
The utility model provides an optical projection device for among parathyroid autofluorescence imaging system, its main aim at solves above-mentioned problem.
In order to solve the technical problem, the utility model discloses a following technical scheme realizes:
an optical projection device used in a parathyroid autologous fluorescence imaging system comprises a protective shell, a near-infrared image acquisition module, a miniature projection module, a reflection module, a dichroic mirror module and a processing module, wherein the near-infrared image acquisition module, the miniature projection module, the reflection module and the dichroic mirror module are all installed in the shell, the dichroic mirror module is connected to the front side of the near-infrared image acquisition module, the reflection module is located right below the dichroic mirror module, the near-infrared image acquisition module and the miniature projection module are all connected with the processing module through optical fibers, an image projected by the miniature projection module is reflected to the dichroic mirror module after passing through the reflection module, the dichroic mirror module can filter interference light waves, and the dichroic mirror module can coaxially reflect the image light waves after the interference is filtered with the near-infrared image acquisition module.
The near-infrared image acquisition module comprises an optical filter and a near-infrared camera, an image sensor is arranged in front of the near-infrared camera, the near-infrared camera is installed in the protective shell, and the optical filter is installed in a lens of the near-infrared camera and located in front of the image sensor.
The miniature projection module comprises a miniature projector and a radiating fin, the miniature projector is arranged in the protective shell, the radiating fin is arranged at the lower part of the miniature projector, and the miniature projector is provided with a light outlet.
The processing module is a GPU processor.
The filter allows light with a wavelength of more than 800nm to pass through.
The reflection module comprises a reflection support and a plane mirror, the reflection support is arranged in the protective shell, the plane mirror is obliquely arranged on the reflection support at an angle of 45 degrees, and the inclined plane of the plane mirror is over against the light outlet of the micro projector.
The dichroic mirror module comprises a dichroic mirror and a connecting piece, the dichroic mirror is located right above the plane mirror and is obliquely arranged on the connecting piece at 45 degrees, the connecting piece is arranged in front of a lens of the near-infrared camera, and the center of the lens of the near-infrared camera and the center point of the dichroic mirror are located at the same axial position.
The reflecting surface of the plane mirror is coated with an aluminum layer or a silver layer.
The dichroic mirror can be transparent to near infrared light with wavelength larger than 700nm and totally reflects light with wavelength smaller than 700 nm.
From the above description of the structure of the present invention, compared with the prior art, the present invention has the following advantages: the utility model discloses convenient to use, design benefit, carry out image acquisition to human external tissue through setting up near-infrared image acquisition module, then transmit for processing module through optic fibre and carry out image processing, the image after the processing carries out image projection to miniature projection module through optic fibre transmission, projection to reflection module, reflection module reflects the image to dichroic mirror module, dichroic mirror can filter the interference light wave in the image, the image light reflection after the filtration shines out, and shines out with near-infrared image acquisition module's coaxial, can be like this the position highlight display of parathyroid. Therefore, an intuitive fluorescent bright spot image can be provided for a doctor in an operation, and the problem that the parathyroid gland is accidentally injured or cut can be effectively avoided.
Drawings
Fig. 1 is a schematic layout diagram of the present invention.
Fig. 2 is a rear view of the present invention.
Fig. 3 is a schematic diagram of a dichroic mirror module according to the present invention.
Fig. 4 is a schematic view of the micro projector according to the present invention.
Fig. 5 is a schematic view of the reflection bracket of the present invention.
Detailed Description
Refer to fig. 1 and 2. An optical projection device for a parathyroid auto-fluorescence imaging system comprises a protective shell 1, a near-infrared image acquisition module 2, a miniature projection module 3, a reflection module 4, a dichroic mirror module 5 and a processing module 6. The near-infrared image acquisition module 2, the miniature projection module 3, the reflection module 4 and the dichroic mirror module 5 are all installed in the shell, the dichroic mirror module 5 is connected to the front side of the near-infrared image acquisition module 2, and the reflection module is located under the dichroic mirror module 5. The near-infrared image acquisition module 2 and the miniature projection module 3 are both connected with the processing module through optical fibers, and images projected by the miniature projection module 3 are reflected to the dichroic mirror module 5 after passing through the reflection module. The dichroic mirror module 5 can filter interference light waves, and the dichroic mirror module 5 can reflect the interference-filtered image light waves coaxially with the near-infrared image acquisition module 2.
Refer to fig. 1. The near-infrared image acquisition module 2 comprises an optical filter 21 and a near-infrared camera 22, wherein the optical filter 21 allows light with a wavelength of more than 800nm to pass through. An image sensor is arranged in front of the near-infrared camera 22, the near-infrared camera 22 is installed in the protective shell 1, and the optical filter 21 is installed in a lens of the near-infrared camera 22 and located in front of the image sensor.
Refer to fig. 1 and 2. The optical filter 21 is a near infrared band optical filter 21, which only allows light in the near infrared wavelength range to pass through, for example, allows light with a wavelength greater than 800nm to pass through, and effectively prevents the interference of visible light on the auto-fluorescence of the parathyroid gland. The near-infrared camera 22 can convert the optical signal entering the near-infrared camera into an electrical signal, namely, an imaging function, and the image sensor can sense the optical signal and has an auxiliary imaging function.
Refer to fig. 1 and 4. The micro projection module 3 comprises a micro projector 31 and a heat sink 32, the micro projector 31 is installed in the protective casing 1, the heat sink 32 is installed at the lower part of the micro projector 31, and the micro projector 31 is provided with a light outlet. The micro projector 31 can project the image transmitted from the processing module 6 to the reflection module 4 through the light outlet of the micro projector 31. The heat sink 32 uses heat dissipation fins to dissipate heat, protecting the micro projector 31 from overheating.
Refer to fig. 1. The processing module 6 may be a digital image processor, may be a computer, may be an FPGA processor, or the like. The processing module 6 is a better design mode by adopting a GPU processor, and the processor is used for processing the image data acquired by the near-infrared camera 22, increasing the fluorescence intensity of the region where the parathyroid gland is located, decreasing the brightness of other regions, and performing high-definition processing such as noise reduction on the image.
Refer to fig. 1 and 5. The reflection module 4 includes a reflection support 41 and a plane mirror 42, and a reflection surface of the plane mirror 42 is coated with an aluminum layer or a silver layer. The reflecting support 41 is installed in the protective casing 1, the plane mirror 42 is installed on the reflecting support 41 in an inclined manner of 45 degrees, and the inclined surface of the plane mirror 42 faces the light outlet of the micro projector 31.
Refer to fig. 1 and 5. The reflecting support 41 is used for mounting the plane mirror 42 for connecting and fixing, the plane mirror 42 has a reflecting function, the reflecting surface of the plane mirror 42 is coated with an aluminum layer or a silver layer to improve the reflecting efficiency, and other materials with reflecting effect can also be used as the reflecting layer. The reflecting surface of the flat mirror 42 is inclined at 45 degrees, and the inclined surface faces the light exit of the pico-projector 31.
Refer to fig. 1 and 3. Dichroic mirror module 5 includes a dichroic mirror 51 and a connector 52, and dichroic mirror 51 is mounted on connector 52 so as to be positioned directly above plane mirror 42 and inclined at 45 degrees. Dichroic mirror 51 is transparent for near infrared light above 700nm and totally reflective for light below 700 nm. The connector 52 is installed in front of the lens of the near-infrared camera 22, and the center of the lens of the near-infrared camera 22 and the center point of the dichroic mirror 51 are located at the same axial position.
Refer to fig. 1 and 3. Dichroic mirror 51 has the function of filtering light waves, dichroic mirror 51 is obliquely arranged at an angle of 45 degrees, the inclined plane of dichroic mirror 51 is opposite to the plane, the inclined plane and the plane are arranged in parallel, and the center point corresponds to each other, so that light wave images reflected by plane mirror 42 can be conveniently reflected onto dichroic mirror 51 for filtering and secondary reflection. Dichroic mirror 51 and the center point of near-infrared camera 22 are coaxial, and connector 52 can be used to connect the roles of dichroic mirror 51 and near-infrared camera 22.
Refer to fig. 1 to 5. The use process comprises the following steps: when the near-infrared imaging device is used, light reflected by the surface of the tissue firstly penetrates through the dichroic mirror 51, enters the camera and then penetrates through the optical filter 21, the optical filter 21 allows light with the wavelength of more than 800nm to penetrate through, so that the interference of visible light on the self-fluorescence of the parathyroid gland can be effectively prevented, and the near-infrared camera 22 converts an optical signal into an electric signal, namely imaging. Then the image is transmitted to a processing module through a gigabit optical fiber, and the processor calculates a parathyroid gland projection picture according to the parathyroid gland autofluorescence image. The processor transmits the calculated projection image to the micro projector 31 through the gigabit fiber, and projects the image from the light exit of the micro projection module 3. The image is reflected by plane mirror 42 onto dichroic mirror 51, and dichroic mirror 51 transmits near infrared light having a wavelength of more than 700nm and totally reflects light having a wavelength of less than 700nm, so that dichroic mirror 51 reflects the projected light again to perform secondary filtering. Preferably, the center point of the projection picture is superposed with the center point of the visual field of the near-infrared image acquisition module 2, and a coaxial light path is projected on the surface of the human tissue, so that the area of the parathyroid gland is highlighted. Therefore, the problem that recalibration is needed when the device is used at different distances can be solved, the accuracy of coincidence of projection and tissue can be improved, and the position of the parathyroid gland can be visually observed.
The above-mentioned be the utility model discloses a concrete implementation way, nevertheless the utility model discloses a design concept is not limited to this, and the ordinary use of this design is right the utility model discloses carry out immaterial change, all should belong to the act of infringement the protection scope of the utility model.
Claims (9)
1. An optical projection apparatus for use in a parathyroid auto-fluorescence imaging system, comprising: the near-infrared image acquisition module, the micro projection module, the reflection module, the dichroic mirror module and the processing module are all installed in the shell, the dichroic mirror module is connected to the front side of the near-infrared image acquisition module, the reflection module is located under the dichroic mirror module, the near-infrared image acquisition module and the micro projection module are connected with the processing module through optical fibers, an image projected by the micro projection module is reflected to the dichroic mirror module after passing through the reflection module, the dichroic mirror module can filter interference light waves, and the dichroic mirror module can coaxially reflect the image light waves after the interference is filtered with the near-infrared image acquisition module.
2. An optical projection apparatus for use in a parathyroid auto-fluorescence imaging system according to claim 1, wherein: the near-infrared image acquisition module comprises an optical filter and a near-infrared camera, an image sensor is arranged in front of the near-infrared camera, the near-infrared camera is installed in the protective shell, and the optical filter is installed in a lens of the near-infrared camera and located in front of the image sensor.
3. An optical projection apparatus for use in a parathyroid auto-fluorescence imaging system according to claim 2, wherein: the miniature projection module comprises a miniature projector and a radiating fin, the miniature projector is arranged in the protective shell, the radiating fin is arranged at the lower part of the miniature projector, and the miniature projector is provided with a light outlet.
4. An optical projection device for use in a parathyroid auto-fluorescence imaging system according to claim 3, wherein: the processing module is a GPU processor.
5. An optical projection apparatus for use in an auto-fluorescence imaging system for parathyroid gland according to any one of claims 2 to 4, wherein: the filter allows light with a wavelength of more than 800nm to pass through.
6. An optical projection device as claimed in claim 5 for use in an auto-fluorescence imaging system for parathyroid glands, wherein: the reflection module comprises a reflection support and a plane mirror, the reflection support is arranged in the protective shell, the plane mirror is obliquely arranged on the reflection support at an angle of 45 degrees, and the inclined plane of the plane mirror is over against the light outlet of the micro projector.
7. An optical projection apparatus for use in a parathyroid auto-fluorescence imaging system according to claim 6, wherein: the dichroic mirror module comprises a dichroic mirror and a connecting piece, the dichroic mirror is located right above the plane mirror and is obliquely arranged on the connecting piece at an angle of 45 degrees, the connecting piece is arranged in front of a lens of the near-infrared camera, and the center of the lens of the near-infrared camera and the center point of the dichroic mirror are located at the same axial position.
8. An optical projection apparatus for use in a parathyroid auto-fluorescence imaging system according to claim 6, wherein: the reflecting surface of the plane mirror is coated with an aluminum layer or a silver layer.
9. An optical projection device as claimed in claim 7 for use in an auto-fluorescence imaging system for parathyroid glands, wherein: the dichroic mirror can be transparent to near infrared light with wavelength larger than 700nm and totally reflects light with wavelength smaller than 700 nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221681336.5U CN218684353U (en) | 2022-07-01 | 2022-07-01 | Optical projection device for parathyroid auto-fluorescence imaging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221681336.5U CN218684353U (en) | 2022-07-01 | 2022-07-01 | Optical projection device for parathyroid auto-fluorescence imaging system |
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| Publication Number | Publication Date |
|---|---|
| CN218684353U true CN218684353U (en) | 2023-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221681336.5U Active CN218684353U (en) | 2022-07-01 | 2022-07-01 | Optical projection device for parathyroid auto-fluorescence imaging system |
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| CN (1) | CN218684353U (en) |
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2022
- 2022-07-01 CN CN202221681336.5U patent/CN218684353U/en active Active
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