An intelligent handheld fundus disease screening auxiliary device

Abstract

The application relates to the technical field of medical equipment, in particular to an intelligent handheld fundus disease screening auxiliary device, which comprises a loading shell used for containing an optical system, one side of the loading shell is fixedly connected with a holding handle, a mounting rack is detachably connected between the loading shell and the holding handle, a nose pad for contacting with the alae nasi is fixedly connected to one side of the mounting rack, the nose pad is located on one side of the loading shell, and the nose pad and the loading shell are parallel to each other, an angle control mechanism for controlling the optical system to adjust a shooting angle is further included, the angle control mechanism is electrically connected with a detection mechanism for measuring real-time pressure data in the process that the nose pad contacts with the alae nasi on both sides, and the angle control mechanism adjusts the shooting angle based on the change of the real-time pressure data; the application is used for providing external support to replace the hand for maintaining the lens, and improving the image definition in the fundus imaging process.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to an intelligent handheld auxiliary device for screening fundus diseases. Background Technology

[0002] In scenarios where it is inconvenient to use a desktop fundus camera, such as community screening, bedside testing of bedridden patients, and rural health checkups, non-mydriatic handheld fundus cameras have become the primary choice for fundus disease screening.

[0003] Current handheld fundus cameras rely primarily on the operator's handheld grip to maintain image stability. When the operator's elbow lacks support from a table or the patient's head is suspended in the air, physiological tremors in the hand can easily cause blurred images. Simultaneously, the instantaneous force generated by pressing the shutter button at the moment of shooting can also cause device shift, further compromising image stability. Furthermore, factors such as the patient's breathing fluctuations and subtle body movements can continuously disturb the coaxial relationship between the device's optical axis and the pupil, ultimately reducing the quality of the fundus image.

[0004] Therefore, the present invention provides an auxiliary device for screening fundus diseases that replaces the traditional manual hand support, so as to reduce image blurring caused by external shaking during fundus imaging. Summary of the Invention

[0005] To address the aforementioned issues, this invention provides an intelligent handheld retinal disease screening auxiliary device that provides external support to replace the hand in maintaining the lens, and maintains lens stability based on the lens support status, thereby reducing image blurring caused by external shaking during retinal imaging.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows: an intelligent handheld fundus disease screening auxiliary device, comprising a loading shell for accommodating an optical system, a grip fixedly connected to one side of the loading shell; and a mounting frame detachably connected between the loading shell and the grip.

[0007] A nose pad block that contacts the nose wing is fixedly connected to one side of the mounting bracket. The nose pad block is located on one side of the loading shell and is parallel to the loading shell.

[0008] It also includes an angle control mechanism for controlling the optical system to adjust the shooting angle, and the angle control mechanism is electrically connected to a detection mechanism for measuring real-time pressure data during the contact between the nose pad and the sides of the nose.

[0009] The angle control mechanism adjusts the shooting angle based on changes in real-time pressure data.

[0010] Furthermore, the nose pad is U-shaped, and the detection mechanism includes pressure sensors and indicator lights fixed on both sides of the inner wall of the nose pad. The pressure sensors are used to measure real-time pressure data during the contact process between the nose pad and the nasal wing. A sliding groove is provided at the connection between the nose pad and the mounting bracket, and the indicator lights are located on both sides of the top of the sliding groove.

[0011] The angle control mechanism is used to input and store the orientation data of both sides of the nose and the reference value corresponding to the pressure sensor on the nose pad stable clamping on the nose. The real-time pressure data is marked based on the shooting angle corresponding to the reference value and the orientation data.

[0012] The real-time pressure data is then compared with the reference value. If the real-time pressure data is consistent with the reference value, a standby command is sent to the indicator light. If the real-time pressure data is inconsistent with the reference value, a flashing command is sent to the indicator light. At the same time, the difference between adjacent real-time pressure data is calculated based on the azimuth data. The adjustment azimuth data corresponding to the real-time pressure data on one side being greater than the real-time pressure data on the other side at the current time is obtained. Using the base point as a reference, the angle control mechanism is adjusted according to the adjustment azimuth data and the magnitude of the difference.

[0013] Furthermore, the angle control mechanism is also used to compare the real-time pressure data with the reference value during the installation of the nose pad. If the real-time pressure data is greater than the reference value, the indicator light corresponding to the real-time pressure data sends a constant-on command; if the real-time pressure data is equal to the reference value, the indicator light corresponding to the real-time pressure data sends a standby command; if the real-time pressure data is less than the reference value, the indicator light corresponding to the real-time pressure data sends a flashing command.

[0014] Furthermore, a buffer layer is fixedly connected to both sides of the nose pad, and the buffer layer is located between the pressure sensor and the nasal wing.

[0015] Furthermore, a sliding block is slidably fitted inside the sliding groove, and the sliding block is fixedly connected to the mounting bracket. A fixing pin is threadedly connected at the center of the sliding groove, and the fixing pin abuts against the sliding block.

[0016] Furthermore, the mounting bracket includes a first locking block that engages with the loading shell and a second locking block that engages with the grip handle. The first locking block is fixedly connected to the sliding block, and the second locking block has an arc-shaped placement groove between it and the grip handle. Several support rods are connected between the first locking block and the second locking block.

[0017] A transfer tube is opened inside the support rod. One end of the transfer tube is located between the loading shell and the first clamping block, and the other end of the transfer tube is located in the placement groove.

[0018] Furthermore, a heat-conducting layer is fixedly connected inside the first card block. The heat-conducting layer is located between the first card block and the loading shell, and is evenly distributed around the transfer tube.

[0019] Furthermore, the end of the support rod near the first locking block is rotatably engaged with the first locking block, and the end of the support rod near the second locking block is threadedly connected to a screw rod, which is threadedly connected to the second locking block.

[0020] Furthermore, several uniform lasers are arranged on the support rod, and the lasers are used to emit red laser light.

[0021] Furthermore, an extension rod is fitted on the outer wall of the support rod, and the end of the extension rod away from the first locking block is rotatably fitted with a semi-circular lifting block.

[0022] The above approach has the following beneficial effects:

[0023] 1. This solution uses a detachable mounting bracket, which can be easily installed on the loading shell and the grip handle as needed, reducing the space occupied when the mounting bracket is not in use. During use, the mounting bracket is connected to the nose pad to form additional support. Compared with traditional manual support, the dual support of the nose pad and the hand grip handle ensures the stability of the loading shell.

[0024] 2. In this solution, the nose pad is set at the center to provide a basic coordinate reference. The nose pad is engaged with the nose wing to provide a basic support point for the loading shell and the handle, which makes it easy to keep the optical system inside the loading shell and the pupil on the same axis. The parallel setting between the loading shell and the nose pad also ensures that the optical system inside the loading shell is vertically aligned with the center of the pupil for image acquisition and processing.

[0025] 3. In this solution, during the support process of the nose pad, the detection mechanism on the nose pad acquires real-time pressure data changes on both sides of the nose to determine the offset of the optical system inside the mounting shell. This allows for adjustment of the optical system inside the mounting shell to overcome the rotation of the camera in the optical system and continuously capture the pupil at the center of the eye socket, reducing interference with the clarity of the acquired image caused by external shaking factors. Attached Figure Description

[0026] Figure 1 This is an isometric view of an embodiment of the intelligent handheld fundus disease screening auxiliary device of the present invention;

[0027] Figure 2 This is a top view of an embodiment of the intelligent handheld fundus disease screening auxiliary device of the present invention;

[0028] Figure 3 This is a left view of an embodiment of the intelligent handheld fundus disease screening auxiliary device of the present invention;

[0029] Figure 4 This is a front view of an embodiment of the intelligent handheld fundus disease screening auxiliary device of the present invention;

[0030] Figure 5 for Figure 3 A schematic diagram of the rotation of the central support rod.

[0031] The reference numerals in the accompanying drawings include: 1. Loading shell; 2. Handle; 3. Mounting bracket; 31. First locking block; 32. Support rod; 33. Second locking block; 4. Nose support block; 41. Pressure sensor; 42. Sliding groove; 43. Sliding block; 44. Fixing pin; 5. Indicator light; 6. Extension rod; 61. Lifting block. Detailed Implementation

[0032] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0035] The following detailed description illustrates the specific implementation method:

[0036] Example 1:

[0037] As attached Figures 1 to 4As shown: An intelligent handheld fundus disease screening auxiliary device includes a loading shell 1 for accommodating an optical system. The optical system is used to capture fundus images and is existing technology, so it will not be described in detail in this embodiment. A handle 2 is fixedly connected to one side of the loading shell 1. A mounting frame 3 is detachably connected between the loading shell 1 and the handle 2. The mounting frame 3 includes a first locking block 31 that engages with the loading shell 1 and a second locking block 33 that engages with the handle 2. The first locking block 31 is fixedly connected to a sliding block 43. An arc-shaped placement groove is opened between the second locking block 33 and the handle 2. Several support rods 32 are connected between the first locking block 31 and the second locking block 33. A transmission tube is opened inside the support rod 32. One end of the transmission tube is located between the loading shell 1 and the first locking block 31, and the other end of the transmission tube is located in the placement groove.

[0038] In another embodiment, a heat-conducting layer is fixedly connected inside the first locking block 31. The heat-conducting layer is located between the first locking block 31 and the loading shell 1, and is evenly distributed around the transfer pipe. In this embodiment, the heat-conducting layer is made of copper. The heat is transferred through the heat-conducting layer to reduce heat accumulation in the loading shell 1. At the same time, it facilitates the accurate conduction of heat from the loading shell 1 during continuous operation by the transfer pipe, allowing operators to quickly confirm temperature changes inside the loading shell 1.

[0039] A nose pad 4 that contacts the nose wing is fixedly connected to one side of the mounting bracket 3. The nose pad 4 is U-shaped and located on one side of the loading shell 1, and the nose pad 4 is parallel to the loading shell 1.

[0040] It also includes an angle control mechanism for controlling the optical system to adjust the shooting angle. The angle control mechanism is an existing camera focusing control module, which will not be described in detail in this embodiment. The angle control mechanism is electrically connected to a detection mechanism for measuring real-time pressure data during the contact between the nose pad block 4 and the sides of the nose. The angle control mechanism adjusts the shooting angle based on the changes in real-time pressure data.

[0041] The detection mechanism includes a pressure sensor 41 and an indicator light 5 fixed on both sides of the inner wall of the nose pad 4. The pressure sensor 41 is used to measure the real-time pressure data during the contact process between the nose pad 4 and the nose wing. A sliding groove 42 is provided at the connection between the nose pad 4 and the mounting bracket 3. The indicator light 5 is located on both sides of the top of the sliding groove 42.

[0042] The angle control mechanism is used to input and store the orientation data of both sides of the nose and the reference value corresponding to the pressure sensor 41 that the nose pad 4 is stably clamped on the nose. Based on the shooting angle corresponding to the reference value, the real-time pressure data is marked and processed based on the orientation data.

[0043] The real-time pressure data is then compared with the reference value. If the real-time pressure data is consistent with the reference value, a standby command is sent to indicator light 5. If the real-time pressure data is inconsistent with the reference value, a flashing command is sent to indicator light 5. At the same time, the difference between adjacent real-time pressure data is calculated based on the azimuth data. The adjustment azimuth data corresponding to the real-time pressure data on one side being greater than the real-time pressure data on the other side at the current time is obtained. Using the base point as a reference, the angle control mechanism is adjusted according to the adjustment azimuth data and the size of the difference.

[0044] For example, by measuring the real-time pressure data during the contact process between the nose pad 4 and the nasal wing, the support of the nose pad 4 can be determined to ensure that the nose pad 4 makes perpendicular contact with the nasal wing (i.e., meets the reference value), so as to ensure the axial stability of the optical system inside the housing 1 for detecting the center of the pupil.

[0045] During continuous acquisition of fundus images, the contact between the nose pad 4 and the nasal ala may change due to the movement of the grip handle 2 or other influences. This causes a shift in real-time pressure data compared to the baseline value. The system determines whether the nose pad 4 is stably supported according to the baseline value, and an indicator light 5 signals that the system has stopped operating. This allows the patient to adjust the grip handle 2's support when the indicator light 5 flashes, ensuring the stability of the optical system within the housing 1 during image acquisition.

[0046] Simultaneously, using the baseline as a reference standard, and combining the adjustment of orientation data and the magnitude of the difference, the angle control mechanism performs adaptive adjustment to actively correct the spatial posture of the nose pad 4. The support position of the grip handle 2 can be adjusted synchronously according to the flashing indicator light 5, coordinating with the automatic posture correction action of the angle control mechanism to minimize optical path deviation within the optical system of the loading housing 1, ensuring the clarity of the optical system within the loading housing 1 throughout the entire process of acquiring fundus images.

[0047] The specific implementation process is as follows:

[0048] During use, the mounting bracket 3 is installed on the loading shell 1 and the grip handle 2 according to the support requirements. The loading shell 1 and the grip handle 2 are respectively engaged by the first locking block 31 and the second locking block 33 to facilitate the disassembly of the mounting bracket 3 to meet the actual use requirements. The first locking block 31 and the second locking block 33 are then connected by the support rod 32 to improve the overall stability of the mechanism of the first locking block 31 and the second locking block 33. Compared with traditional manual support, the dual support of the nose pad block 4 and the hand grip handle 2 ensures the support stability of the loading shell 1.

[0049] Meanwhile, the heat from the optical system inside the loading shell 1 is transferred through the transmission tube inside the support rod 32 during continuous operation. This allows the operator to directly monitor the changes in the working heat of the optical system inside the loading shell 1 and make timely work pauses or adjustments, thereby reducing the risk of optical system malfunctions caused by overheating during continuous operation and resulting in a decrease in image quality.

[0050] During the acquisition of fundus images, the subject follows the fundus photography procedure and gazes parallel to the indicator lights inside the optical system. The nose pad 4 is stably engaged with the nasal ala to provide a basic coordinate reference. That is, the nose pad 4 is engaged with the nasal ala to provide a basic support point for the loading shell 1 and the handle 2, so as to keep the optical system inside the loading shell 1 and the pupil on the same axis. The parallel arrangement between the loading shell 1 and the nose pad 4 also ensures that the optical system inside the loading shell 1 is vertically aligned with the center of the pupil for image acquisition and processing.

[0051] Meanwhile, the detection mechanism on the nose pad block 4 is used to acquire real-time pressure data changes on both sides of the nose to determine the offset of the optical system inside the mounting shell 1. The optical system inside the mounting shell 1 is then adjusted to overcome the camera rotation in the optical system inside the mounting shell 1 and continuously capture the pupil at the center of the eye socket, reducing the interference of external shaking factors on the clarity of the acquired image.

[0052] Example 2:

[0053] The difference from Embodiment 1 is that the angle control mechanism is also used to compare the real-time pressure data at the current time with the reference value during the installation of the nose pad block 4. If the real-time pressure data is greater than the reference value, the indicator light 5 that obtains the directional data corresponding to the real-time pressure data sends a constant-on command; if the real-time pressure data is equal to the reference value, the indicator light 5 that obtains the directional data corresponding to the real-time pressure data sends a standby command; if the real-time pressure data is less than the reference value, the indicator light 5 that obtains the directional data corresponding to the real-time pressure data sends a flashing command.

[0054] For example, by comparing the collected real-time pressure data with a preset benchmark value, the working status of the corresponding directional indicator light 5 is controlled according to the difference in the magnitude of the real-time pressure data on both sides. When the real-time pressure data is greater than the benchmark value, the corresponding directional indicator light 5 remains constantly lit, indicating that the current clamping pressure is too high; when the real-time pressure data is equal to the benchmark value, the indicator light 5 enters standby mode, indicating that the clamping state has reached the standard state; when the real-time pressure data is less than the benchmark value, the indicator light 5 starts flashing as a reminder, indicating that the clamping pressure is insufficient.

[0055] By relying on different light signals to form an intuitive human-machine prompt mechanism, the operator can continuously fine-tune the position and clamping force of the nose pad 4 during the installation stage of fitting the nose wing. This facilitates the quick adjustment of the nose pad 4 to a moderate clamping condition, avoiding discomfort to the examinee due to excessive clamping or failure of support due to excessive clamping.

[0056] With the help of a precise and controllable nose wing clamping support structure, the spatial position of the optical system inside the loading shell 1 is stably constrained, effectively reducing the risk of optical path deviation during the image acquisition stage, continuously improving the axial stability during fundus imaging, reducing image blurring caused by shaking, and improving the imaging quality of the non-mydriatic handheld fundus screening instrument in scenarios such as bedside examination and rural screening.

[0057] Example 3:

[0058] The difference from Embodiment 2 is that a buffer layer is fixedly connected to both sides of the nose pad 4, and the buffer layer is located between the pressure sensor 41 and the nasal wing.

[0059] The specific implementation process is as follows: the buffer layer reduces the pressure on the nose when the nose pad 4 is in direct contact, thereby improving the comfort during the placement of the nose pad; at the same time, the use of absorbent materials such as sponge or cloth as a buffer layer can reduce the direct contact of sweat generated during the wearing of the nose pad 4 with the pressure sensor 41, thereby playing an isolation and protection role for the pressure sensor 41 and thus extending the service life of the pressure sensor 41.

[0060] In another embodiment, a sliding block 43 is slidably fitted inside the sliding groove 42, the sliding block 43 is fixedly connected to the mounting bracket 3, and a fixing pin 44 is threadedly connected to the center of the sliding groove 42, the fixing pin 44 abutting against the sliding block 43.

[0061] Since the interpupillary distance varies among different patients, the sliding block 43 slides within the sliding groove 42, so that the distance between the loading shell 1 and the nose pad block 4 corresponds to the interpupillary distance of different patients. This is especially suitable for adaptive adjustment for adults and children, ensuring that the optical system and the pupil are on the same axis during subsequent fundus image capture.

[0062] Example 4:

[0063] The difference from Embodiment 3 is that the end of the support rod 32 near the first locking block 31 is rotatably engaged with the first locking block 31, and the end of the support rod 32 near the second locking block 33 is threadedly connected with a screw, which is threadedly connected to the second locking block 33.

[0064] The specific implementation process is as follows: The screw inside the support rod 32 is connected to the second locking block 33 to facilitate the detachable connection between the second locking block 33 and the support rod 32. The support rod 32 rotates around the first locking block 31 to support the stable support of the loading shell 1 through the triangular support formed by the support rod 32 on the ground, so as to reduce the impact of water vapor erosion or dust adhesion that may occur when the optical system inside the loading shell 1 comes into contact with the ground.

[0065] Combination such as Figure 5 As shown, in another embodiment, the outer wall of the support rod 32 is fitted with an extension rod 6, and the end of the extension rod 6 away from the first locking block 31 is rotatably fitted with a semi-circular lifting block 61.

[0066] For some patients who need to repeatedly collect image data, the weight of the loading shell 1 is distributed by the semi-circular lifting block 61 engaging with the shoulder, reducing the force required for the operator to maintain the lifting position and making it easier for the operator to maintain the state of holding the handle 2.

[0067] Example 5:

[0068] The difference from Embodiment 4 is that a number of uniform lasers (not shown in the figure) are arranged on the support rod 32, and the lasers are used to emit red lasers.

[0069] The specific implementation process is as follows: Since the loading shell 1 covers the eye at the center of the eye socket to obtain fundus images, when the laser emits a red laser, it will not irradiate the eye, but will irradiate the periphery of the eye socket; the red laser will indicate the position of the laser at the outer corner of the eye or between the eyebrows, and the laser will continuously irradiate the eye socket. The operation is convenient for the operator to adjust the position according to the position of the red laser, so as to ensure that the loading shell 1 is aligned with the center of the eye socket.

[0070] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. An intelligent handheld fundus disease screening auxiliary device, comprising a housing (1) for accommodating an optical system, wherein a handle (2) is fixedly connected to one side of the housing (1); characterized in that, A mounting bracket (3) is detachably connected between the loading shell (1) and the grip handle (2); The mounting bracket (3) has a nose pad (4) that contacts the nose wing. The nose pad (4) is located on one side of the loading shell (1) and is parallel to the loading shell (1). It also includes an angle control mechanism for controlling the optical system to adjust the shooting angle, and the angle control mechanism is electrically connected to a detection mechanism for measuring real-time pressure data during the contact between the nose pad (4) and the sides of the nose. The angle control mechanism adjusts the shooting angle based on changes in real-time pressure data.

2. The intelligent handheld fundus disease screening auxiliary device according to claim 1, characterized in that, The nose pad (4) is U-shaped. The detection mechanism includes a pressure sensor (41) and an indicator light (5) fixed on both sides of the inner wall of the nose pad (4). The pressure sensor (41) is used to measure the real-time pressure data during the contact process between the nose pad (4) and the nose wing. A sliding groove (42) is provided at the connection between the nose pad (4) and the mounting bracket (3). The indicator light (5) is located on both sides of the top of the sliding groove (42). Angle control mechanism is used to input and store the orientation data of both sides of the nose and the reference value corresponding to the pressure sensor (41) of the nose pad (4) which is stably clamped on the nose. The real-time pressure data is marked based on the orientation data, with the shooting angle corresponding to the reference value as the base point. Then compare the real-time pressure data with the reference value. If the real-time pressure data is consistent with the reference value, send a standby command to the indicator light (5). If the real-time pressure data is inconsistent with the reference value, send a flashing command to the indicator light (5). At the same time, calculate the difference between adjacent real-time pressure data based on the azimuth data, obtain the adjustment azimuth data corresponding to the real-time pressure data on one side being greater than the real-time pressure data on the other side at the current time, and use the base point as a reference to adjust the angle control mechanism according to the adjustment azimuth data and the size of the difference.

3. The intelligent handheld fundus disease screening auxiliary device according to claim 2, characterized in that, The angle control mechanism is also used to compare the real-time pressure data at the current time with the reference value during the alignment and installation process of the nasal pad (4) with the patient's nasal wing. If the real-time pressure data is greater than the reference value, the indicator light (5) that obtains the directional data corresponding to the real-time pressure data sends a constant-on command; if the real-time pressure data is equal to the reference value, the indicator light (5) that obtains the directional data corresponding to the real-time pressure data sends a standby command; if the real-time pressure data is less than the reference value, the indicator light (5) that obtains the directional data corresponding to the real-time pressure data sends a flashing command.

4. The intelligent handheld fundus disease screening auxiliary device according to claim 2, characterized in that, The nose pad (4) is fixedly connected to both sides with a buffer layer, which is located between the pressure sensor (41) and the nasal wing.

5. The intelligent handheld fundus disease screening auxiliary device according to claim 2, characterized in that, A sliding block (43) is slidably fitted inside the sliding groove (42). The sliding block (43) is fixedly connected to the mounting bracket (3). A fixing pin (44) is threadedly connected at the center of the sliding groove (42). The fixing pin (44) abuts against the sliding block (43).

6. The intelligent handheld fundus disease screening auxiliary device according to claim 2, characterized in that, The mounting bracket (3) includes a first locking block (31) that engages with the loading shell (1) and a second locking block (33) that engages with the grip handle (2). The first locking block (31) is fixedly connected to the sliding block (43). An arc-shaped placement groove is opened between the second locking block (33) and the grip handle (2). Several support rods (32) are connected between the first locking block (31) and the second locking block (33). A transfer tube is provided inside the support rod (32). One end of the transfer tube is located between the loading shell (1) and the first clamping block (31), and the other end of the transfer tube is located in the placement groove.

7. The intelligent handheld fundus disease screening auxiliary device according to claim 6, characterized in that, A heat-conducting layer is fixedly connected inside the first card block (31). The heat-conducting layer is located between the first card block (31) and the loading shell (1). The heat-conducting layer is evenly arranged with the transfer tube as the center.

8. The intelligent handheld fundus disease screening auxiliary device according to claim 6, characterized in that, The end of the support rod (32) near the first locking block (31) is rotatably engaged with the first locking block (31), and the end of the support rod (32) near the second locking block (33) is threadedly connected to a screw rod, which is threadedly connected to the second locking block (33).

9. The intelligent handheld fundus disease screening auxiliary device according to claim 8, characterized in that, Several uniform lasers are arranged on the support rod (32), which are used to emit red lasers.

10. The intelligent handheld fundus disease screening auxiliary device according to claim 8, characterized in that, The outer wall of the support rod (32) is fitted with an extension rod (6), and the end of the extension rod (6) away from the first locking block (31) is rotatably fitted with a semi-circular lifting block (61).

Images