Small fundus imaging equipment and use method thereof

Abstract

The technical scheme of the invention discloses small fundus imaging equipment and a using method thereof. The small fundus imaging equipment comprises an outer cylinder and an inner cylinder which are telescopically connected with the outer cylinder through a pull-rotation connecting mechanism; the ophthalmoscope is arranged in the inner cylinder; the eye curtain is movably connected with the inner cylinder through a rotary adjusting mechanism and used for adjusting the eyes of the user; and the camera shooting base is detachably connected with the outer cylinder and is used for shooting the eye actions of the user through the ophthalmoscope. The small fundus imaging equipment is small and exquisite in structure, convenient to carry about in daily life, simple in structure and convenient to operate, fundus imaging can be achieved only by pulling the outer cylinder and the inner cylinder open, rotating and fixing the outer cylinder and the inner cylinder, separating the eyelids of a user through the rotating ring to expose eyeballs and matching with interactive games of a mobile phone end or other mobile ends, and the imaging efficiency is improved. The detection information result can be obtained through data analysis, the user can achieve fundus detection by himself / herself without going to a medical institution, and the early diagnosis rate and the mother and infant safety are greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of fundus ophthalmoscopy, and in particular to a small fundus imaging device and a use method thereof. Background Art

[0002] In the field of maternal and child health, gestational hypertension (PH) has always been a major challenge affecting the safety of pregnant women and fetuses. PH may not only cause a series of serious symptoms such as high blood pressure, proteinuria, edema in pregnant women, but may also cause life-threatening complications such as abnormal liver function, liver rupture, hypertensive heart disease, pulmonary edema, etc. For the fetus, PH may cause adverse consequences such as intrauterine growth retardation, premature birth, low birth weight, and even induce emergency situations such as eclampsia, posing a huge threat to the safety of mothers and babies.

[0003] Currently, the detection of gestational hypertension mainly relies on methods such as dynamic blood pressure monitoring and 24-hour urine protein quantification, but these methods have limitations such as complex operation and non-quantitative data, which are difficult to meet the immediate needs of early screening and disease management. Therefore, exploring a more convenient, accurate, and non-invasive detection method is of great significance for improving the early diagnosis rate of gestational hypertension and ensuring the safety of mothers and babies.

[0004] As important indicators of human blood circulation and systemic microvascular disease, fundus retinal vessel diameter ratio and other fundus changes have shown great potential in the early diagnosis of pregnancy-induced hypertension in recent years. Fundus examination can not only quickly reflect the patient's basic condition, but also has the advantages of rapid, non-invasive and repeatable detection. It is an emerging direction for early screening and disease management of pregnancy-induced hypertension.

[0005] However, traditional fundus imaging equipment often has problems such as heavy equipment, high price, and complex operation. It requires professional ophthalmologists to use it manually and analyze data based on ophthalmic knowledge, which greatly limits its possibility of large-scale application in obstetrics. Especially in primary medical institutions and remote areas, the lack of professional ophthalmologists further highlights the urgency of this issue.

[0006] There are three types of traditional ophthalmoscopes, each with different fields of view, subjectivity, comfort, and technical thresholds:

[0007] 1. Direct ophthalmoscopy

[0008] Limited field of view: The field of view of direct ophthalmoscopy is relatively small and may not fully cover the fundus area, resulting in some lesions being missed, increasing the risk of misdiagnosis or missed diagnosis.

[0009] Highly subjective: The examination results of direct ophthalmoscopy rely on the doctor's intuitive observation and experience judgment, which has a certain degree of subjectivity and uncertainty and may affect the accuracy of the diagnosis.

[0010] Discomfort: During the examination, the doctor and the patient need to be in close contact, which may make the doctor feel tired, and the patient may also feel nervous and uncomfortable.

[0011] High technical threshold: Using a direct ophthalmoscope requires certain operating skills and experience, which is difficult for non-professional doctors or patients to operate by themselves.

[0012] 2. Indirect ophthalmoscopy

[0013] Inverted image: The image seen by the indirect ophthalmoscope is an inverted image, which requires training to master, which increases the difficulty of use and learning cost.

[0014] Low image magnification: The image magnification of the indirect ophthalmoscope is relatively small, and its ability to resolve small lesions is limited, which may affect the accuracy of diagnosis.

[0015] Bulky equipment: Indirect ophthalmoscopes can be bulky compared to portable devices, making them inconvenient to use in many settings, especially at home or in primary care settings.

[0016] Complex operation: Although indirect ophthalmoscopy plays an important role in the diagnosis and treatment of posterior segment diseases, its operation is relatively complicated and requires professional doctors to operate and interpret it.

[0017] 3. Fundus Camera

[0018] High cost of equipment: Fundus cameras are usually expensive and may be unaffordable for primary care institutions or patients with poor economic conditions.

[0019] High operating skills required: Using a fundus camera requires certain operating skills and experience, which may be difficult for non-professionals to master.

[0020] Data interpretation relies on professional doctors: Images taken by fundus cameras need to be interpreted and analyzed by professional doctors, which increases the complexity and time cost of diagnosis.

[0021] High equipment maintenance cost: As a precision medical device, fundus cameras require regular maintenance and calibration to ensure their accuracy and stability, which increases the maintenance cost of the equipment.

[0022] Based on this, designing a small fundus imaging device that can be used by users by themselves has become a topic worthy of in-depth exploration. At the same time, existing imaging devices have certain defects in the early screening and management of gestational hypertension. In order to better meet clinical needs, it is necessary to develop more portable, easy-to-operate, affordable and accurate fundus imaging devices in the future to improve the early diagnosis rate of gestational hypertension and the level of maternal and child safety. Summary of the invention

[0023] The technical problem solved by the present invention is that the traditional fundus ophthalmoscope is not portable, has high technical requirements for operation, is expensive, and is not suitable for the general population, especially for users with common gestational hypertension.

[0024] In order to solve the above technical problems, the technical solution of the present invention provides a small fundus imaging device, wherein the fundus imaging device comprises:

[0025] The outer cylinder is open at both ends and is through-connected in the axial direction;

[0026] An inner cylinder is telescopically connected to the outer cylinder via a pull-and-turn connection mechanism;

[0027] an ophthalmoscope, disposed in the inner cylinder;

[0028] An eyelid, movably connected to the inner cylinder via a rotary adjustment mechanism, for adjusting the user's eyes; and

[0029] The camera base is detachably connected to the outer tube and is used for photographing the eye movements of the user through the ophthalmoscope.

[0030] Optionally, the inner cylinder comprises:

[0031] The upper inner cylinder is open at both ends and is through-connected in the axial direction;

[0032] A lower inner cylinder, which is open at both ends and is axially continuous; and

[0033] The ophthalmoscope connects the upper inner cylinder and the lower inner cylinder and makes the upper inner cylinder contact with the lower inner cylinder.

[0034] Optionally, the pull-and-turn connection mechanism comprises:

[0035] A positioning convex ring is formed on the outer side of the bottom of the lower inner cylinder in a convex manner;

[0036] A positioning concave ring is formed concavely on the inner side of the outer cylinder near the top, and the positioning convex ring and the positioning concave ring are matched in size to prevent the lower inner cylinder and the outer cylinder from being separated during the stretching process;

[0037] A plurality of positioning grooves are evenly arranged in the circumferential direction of the inner top of the outer cylinder;

[0038] A plurality of positioning guide grooves are formed along the axis direction of the inner cylinder at positions corresponding to the positioning groove members on the outer side of the inner cylinder, and the positioning groove members are immersed in the positioning guide grooves to prevent the inner cylinder from rotating in the circumferential direction when being stretched with the outer cylinder;

[0039] A positioning ring groove is arranged at the outer bottom of the lower inner cylinder and close to the positioning convex ring;

[0040] A plurality of positioning blocks are connected to the surface of the positioning ring groove and are located outside the plane where the positioning guide groove extends. The positioning blocks remain horizontal with the positioning groove member when the positioning guide groove is separated from the positioning groove member, and are inserted into the positioning groove member to position and fix the lower inner cylinder and the outer cylinder when the lower inner cylinder is rotated.

[0041] Optionally, the upper inner cylinder and the lower inner cylinder are respectively provided with an upper mounting hole and a lower mounting hole connected to the ophthalmoscope, and the ophthalmoscope and the upper mounting hole and the lower mounting hole are installed with interference fit so that the upper inner cylinder and the lower inner cylinder are in close contact.

[0042] Optionally, the eye curtain comprises:

[0043] A pair of eye curtain pieces are symmetrically mounted in the upper inner cylinder;

[0044] a pair of eye contact pads, respectively detachably connected to the corresponding eye curtain members;

[0045] The face contact pad is provided with an active opening for a pair of eye curtain members to pass through. The face contact pad is sleeved outside the pair of eye curtain members through the active opening and connected to the upper inner tube. When the pair of eye curtain members are active, they move away from or close to each other within the range of the active opening.

[0046] Optionally, the rotation adjustment mechanism is arranged in the upper inner cylinder, and is used to control a pair of eye curtain members to move away from or towards each other, and comprises:

[0047] A rotating ring, sleeved on the outside of the upper inner cylinder;

[0048] A rotating base is connected to the interior of the upper inner cylinder, and one end of the rotating base passes through the upper inner cylinder and is connected to the rotating ring;

[0049] A base stopper connected to the interior of the upper inner cylinder and in contact with the surface of the rotating base;

[0050] The convex stopper is connected to the interior of the upper inner tube and contacts the surface of the base stopper; wherein

[0051] A pair of eye curtain parts are connected to the rotating base through fasteners and pass through the base stopper and the convex stopper; and the base stopper and the convex stopper are located between the face contact pad and the rotating base.

[0052] Optionally,

[0053] The inner wall of the rotating ring is provided with a connecting groove;

[0054] One end of the rotating base extends outward to form a connecting block, and an observation hole and a pair of movable tracks are provided on the surface of the rotating base from top to bottom, wherein the observation hole is located in the middle of the rotating base, and the pair of movable tracks are symmetrically distributed on the outside of the observation hole;

[0055] The side wall of the upper inner cylinder is provided with a moving groove;

[0056] The connecting block of the rotating base passes through the moving groove and is connected to the connecting groove, the fastener passes through the moving track and is connected to a pair of eye curtain pieces, and when the rotating ring rotates, the fastener drives the pair of eye curtain pieces to move in the moving track to achieve the pair of eye curtain pieces moving away from or close to each other;

[0057] The base limiting member is provided with a first limiting hole, and the convex limiting member is provided with a second limiting hole, and the first limiting hole and the second limiting hole are used to movably limit the pair of eye curtain members;

[0058] The facial contact pad is provided with the movable opening whose size and structure match the second limiting hole.

[0059] Optionally, the camera base includes:

[0060] A battery box, detachably connected to an opening at one end of the outer tube;

[0061] A camera, fixed vertically in the middle of the battery box and facing the eyelid;

[0062] An LED light, vertically fixed to the battery box and located next to the camera; and

[0063] A limiting plate is sleeved on the camera and the LED lamp and connected to the opening of the outer tube, and a gap is provided between the limiting plate and the battery box.

[0064] Optionally, the battery box has a power supply loading portion for installing a power supply and a box cover.

[0065] In order to solve the above technical problems, the technical solution of the present invention further provides a method for using the small fundus imaging device according to any one of the above items, wherein the method for using is as follows:

[0066] When in use, the inner cylinder is pulled out of the outer cylinder and rotated, the inner cylinder and the outer cylinder are fixed by a pull-and-turn connection mechanism, a pair of eye curtain pieces are respectively aligned with the upper eyelid and the lower eyelid of one eye of the user, and the pair of eye curtain pieces are gradually moved away from each other by rotating the rotating ring to open the upper eyelid and the lower eyelid of the user to a suitable state and expose the eyeball; the user's other eye completes eye position guidance under the guidance of the mobile phone interactive game, the LED light provides light source, the camera records the movement of the user's eyeball, and sends the captured data to the background processor for data analysis to obtain an assessment of the fundus health status, and finally, after the game is over, the interaction and health status information is summarized on the mobile phone interface.

[0067] The beneficial effects of the technical solution of the present invention are:

[0068] The small fundus imaging device of the present invention has a compact structure, is easy to carry around daily, and has a simple structure and is easy to operate. It only requires the outer cylinder and the inner cylinder to be pulled apart and rotated to fix, and then the user's eyelids are separated by a rotating ring to expose the eyeball, and then the interactive game on the mobile phone or other mobile terminals is used to achieve fundus imaging. The detection information results can be obtained through data analysis, and the user can perform fundus detection by himself without going to a medical institution, which greatly improves the early diagnosis rate and maternal and child safety. Since the structure of the small fundus imaging device of the present invention is not as complicated as that of a traditional fundus ophthalmoscope, the price is much lower than that of a traditional fundus ophthalmoscope, which is more affordable and has high diagnostic accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0069] Figure 1 is a stereoscopic diagram of a small fundus imaging device in an embodiment of the present invention;

[0070] Figure 2 An exploded view of a small fundus imaging device in an embodiment of the present invention;

[0071] Figure 3 A schematic diagram of the stretching process of a small fundus imaging device in an embodiment of the present invention;

[0072] Figure 4 A structural diagram of the lower inner cylinder and the outer cylinder in an embodiment of the present invention;

[0073] Figure 5 This is a schematic diagram of the connection process between the lower inner cylinder and the outer cylinder in an embodiment of the present invention;

[0074] Figure 6 An exploded view of the upper inner cylinder and the eyelid in an embodiment of the present invention;

[0075] Figure 7 Schematic diagram of the connection relationship between the eyelid and the rotating base in an embodiment of the present invention;

[0076] Figure 8Schematic diagram of the motion relationship between the rotating base and the eyelid in an embodiment of the present invention;

[0077] Fig. 9 Schematic diagram of the relationship between the upper inner cylinder and the rotating ring in an embodiment of the present invention;

[0078] Fig.10 Schematic diagram of the relationship between the upper inner cylinder and the rotating base in an embodiment of the present invention;

[0079] Fig.11 It is a cross-sectional view of the upper inner cylinder and the rotating base after installation in the embodiment of the present invention;

[0080] Fig.12 Schematic diagram of the relationship between the upper inner cylinder, the lower inner cylinder and the ophthalmoscope in the embodiment of the present invention Figure 1 ;

[0081] Fig.13 Schematic diagram of the relationship between the upper inner cylinder, the lower inner cylinder and the ophthalmoscope in the embodiment of the present invention Figure 2 ;

[0082] Fig.14 It is a structural schematic diagram of a camera base in an embodiment of the present invention;

[0083] Fig.15 This is a schematic diagram of the installation of the camera base and the outer cylinder in an embodiment of the present invention;

[0084] Fig.16 Schematic diagram of the structure of the battery box in an embodiment of the present invention.

[0085] In the accompanying drawings: 1, outer cylinder, 2, inner cylinder, 3, eye curtain, 4, camera base, 5, rotation adjustment mechanism, 6, ophthalmoscope, 7, fastener, 8, pull-and-turn connection mechanism, 21, upper inner cylinder, 22, lower inner cylinder, 31, eye curtain member, 32, eye contact pad, 33, face contact pad, 41, battery box, 42, camera, 43, LED light, 44, limit plate, 45, gap, 51, rotating ring, 52, rotating base, 53, base limit member, 54, convex limit member, 81, positioning convex ring , 82, positioning concave ring, 83, positioning groove, 84, positioning guide groove, 85, positioning ring groove, 86, positioning block, 211, movable groove, 212, upper mounting hole, 221, lower mounting hole, 311, eyelid base, 312, eyelid convex part, 313 mounting groove, 411, power loading part, 412, box cover, 441, mounting hole, 511, connecting groove, 521, observation hole, 522, movable track, 523, connecting block, 531, first limiting hole, 541, second limiting hole. DETAILED DESCRIPTION

[0086] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0087] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0088] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0089] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0090] In the present utility model, unless otherwise clearly stipulated and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0091] See also Figure 1 , Figure 2 and Figure 3As shown, a small fundus imaging device of an embodiment is shown, wherein the fundus imaging device includes an outer cylinder 1, which is open at both ends and passes through in the axial direction; an inner cylinder 2, which is telescopically connected to the outer cylinder 1 through a pull-and-turn connection mechanism 8; an ophthalmoscope 6, which is arranged in the inner cylinder 2; an eye curtain 3, which is movably connected to the inner cylinder 2 through a rotation adjustment mechanism 5, and is used to adjust the user's eyes; and a camera base 4, which is detachably connected to the outer cylinder 1, and is used to shoot the user's eye movements through the ophthalmoscope 6.

[0092] In this embodiment, Fig.12 and Fig.13 As shown, the inner cylinder 2 includes an upper inner cylinder 21, which is open at both ends and is through in the axial direction; a lower inner cylinder 22, which is open at both ends and is through in the axial direction; and an ophthalmoscope 6, which connects the upper inner cylinder 21 and the lower inner cylinder 22 and makes the upper inner cylinder 21 and the lower inner cylinder 22 contact each other. The upper inner cylinder 21 and the lower inner cylinder 22 are respectively provided with an upper mounting hole 212 and a lower mounting hole 221 for connecting the ophthalmoscope 6, and the ophthalmoscope 6 and the upper mounting hole 212 and the lower mounting hole 221 are installed by interference fit so that the upper inner cylinder 21 and the lower inner cylinder 22 are in close contact with each other.

[0093] In this embodiment, Figure 4 and Figure 5 As shown, the pull-rotation connection mechanism 8 includes a positioning convex ring 81, which is formed convexly on the outside of the bottom of the lower inner cylinder 22; a positioning concave ring 82, which is formed concavely on the inner side of the outer cylinder 1 near the top, and the sizes of the positioning convex ring 81 and the positioning concave ring 82 match to prevent the lower inner cylinder 22 and the outer cylinder 1 from being separated during the stretching process; a plurality of positioning grooves 83, which are evenly arranged in the circumferential direction of the inner top of the outer cylinder 1; a plurality of positioning guide grooves 84, which are arranged along the inner cylinder 2 (including the upper inner cylinder 21 and the lower inner cylinder 22), and the positioning guide grooves 84 are provided on the surfaces of the upper inner cylinder 21 and the lower inner cylinder 22, or directly provided on the surface of the lower inner cylinder 22, but not provided on the surface of the upper inner cylinder 21, and can be provided according to the specific The axial direction of the positioning groove 83 is formed on the outer side of the inner cylinder 2 at a position corresponding to the positioning groove 83, and the positioning groove 83 is immersed in the positioning guide groove 84 to prevent the inner cylinder 2 from rotating in the circumferential direction when it is stretched with the outer cylinder 1; the positioning ring groove 85 is arranged at the outer bottom of the lower inner cylinder 22 and close to the positioning convex ring 81; a plurality of positioning blocks 86 are connected to the surface of the positioning ring groove 85 and are located outside the plane where the positioning guide groove 84 extends. The positioning blocks 86 remain horizontal with the positioning groove 83 when the positioning guide groove 84 is separated from the positioning groove 83, and when the lower inner cylinder 22 is rotated, the positioning groove 83 is inserted to position and fix the lower inner cylinder 22 and the outer cylinder 1.

[0094] In this embodiment, Figure 2 , Figure 6 , Figure 7 and Figure 8As shown, the eye curtain 3 includes a pair of eye curtain pieces 31, which are symmetrically installed in the upper inner cylinder 21; a pair of eye contact pads 32, which are detachably connected to the corresponding eye curtain pieces 31; and a face contact pad 33, which is provided with an active opening 331 for the pair of eye curtain pieces 31 to pass through. The face contact pad 33 is sleeved outside the pair of eye curtain pieces 31 through the active opening 331 and is connected to the upper inner cylinder 21. When the pair of eye curtain pieces 31 are active, they move away from or close to each other within the range of the active opening 331 (see FIG. 2 ). Figure 1 can be known).

[0095] In this embodiment, Figure 6 , Figure 8 , Fig. 9 , Fig.10 and Fig.11 As shown, the rotation adjustment mechanism 5 is arranged in the upper inner cylinder 21, and is used to control a pair of eye curtain members 31 to move away from or approach each other, and includes a rotating ring 51, which is sleeved on the outside of the upper inner cylinder 21; a rotating base 52, which is connected to the inside of the upper inner cylinder 21, and one end passes through the upper inner cylinder 21 and is connected to the rotating ring 51; a base stopper 53, which is connected to the inside of the upper inner cylinder 21 and contacts the surface of the rotating base 52; a convex stopper 54, which is connected to the inside of the upper inner cylinder 21 and contacts the surface of the base stopper 53; wherein the pair of eye curtain members 31 are connected to the rotating base 52 through a fastener 7 and pass through the base stopper 53 and the convex stopper 54; and the base stopper 53 and the convex stopper 54 are located between the face contact pad 33 and the rotating base 52.

[0096] In this embodiment, Figure 6 , Figure 7 , Fig. 9 and Fig.10 As shown, a connecting groove 511 is provided on the inner wall of the rotating ring 51; one end of the rotating base 52 extends outward to form a connecting block 523; an observation hole 521 and a pair of moving rails 522 are provided on the surface of the rotating base 52 from top to bottom; the observation hole 521 is located in the middle of the rotating base 52; the pair of moving rails 522 are symmetrically distributed on the outside of the observation hole 521; a moving groove 211 is provided on the side wall of the upper inner cylinder 21; the connecting block 523 of the rotating base 52 passes through the moving groove 211 and is connected to the connecting groove 511; the fastener 7 passes through The movable track 522 is connected to a pair of eye curtain members 31. When the rotating ring 51 rotates, the pair of eye curtain members 31 are driven to move in the movable track 522 through the fastener 7 to achieve the pair of eye curtain members 31 moving away from or approaching each other; the base limiting member 53 is provided with a first limiting hole 531, and the convex limiting member 54 is provided with a second limiting hole 541. The first limiting hole 531 and the second limiting hole 541 are used for movably limiting the pair of eye curtain members 31; the facial contact pad 33 is provided with a movable opening 331 whose size and structure match the second limiting hole 541.

[0097] After the eye curtain 3 and the upper inner cylinder 21 are installed, the eye curtain member 31 is connected to the rotating base 52 through the fastener 7, and the upper part passes through the first limiting hole 531 of the base limiting member 53, the second limiting hole 541 of the protrusion limiting member 54 and the movable opening 331 of the face contact pad 33, and the movable opening 331 is exposed.

[0098] The eye curtain member 31 includes an eye curtain base 311 and an eye curtain protrusion 312. The first limiting hole 531 of the base limiting member 53 is used to limit the eye curtain base 311, and the second limiting hole 541 of the protrusion limiting member 54 is used to limit the eye curtain protrusion 312. The eye curtain protrusion 312 is also provided with a mounting groove 313 for mounting the eye contact pad 32.

[0099] In this embodiment, Fig.14 , Fig.15 and Fig.16 As shown, the camera base 4 includes a battery box 41, which is detachably connected to the opening of one end of the outer tube 1; a camera 42, which is vertically fixed to the middle of the battery box 41 and faces the eyelid 3; an LED light 43, which is vertically fixed to the battery box 41 and located next to the camera 42; and a limit plate 44, which is sleeved on the camera 42 and the LED light 43 and connected to the opening of the outer tube 1, and there is a gap 45 between the limit plate 44 and the battery box 41. The battery box 41 has a power supply loading part 411 and a box cover 412 for installing a power supply, and the limit plate 44 has a mounting hole 441 for the camera 42 and the LED light 43 to pass through.

[0100] This embodiment also provides a method for using the small fundus imaging device according to any of the above items, wherein the method for using is as follows:

[0101] When in use, the inner cylinder 2 is pulled out of the outer cylinder 1 and rotated, and the inner cylinder 2 and the outer cylinder 1 are fixed by pulling and rotating the connecting mechanism 8, and a pair of eye curtain pieces 31 are respectively aligned with the upper eyelid and the lower eyelid of one eye of the user, and the pair of eye curtain pieces 31 are gradually moved away from each other by rotating the rotating ring 51 to open the upper eyelid and the lower eyelid of the user to a suitable state and expose the eyeball; the other eye of the user completes the eye position guidance under the guidance of the mobile phone interactive game, the LED light 53 provides light source, and the camera 52 records the movement of the user's eyeball, and sends the captured data to the background processor for data analysis to obtain the fundus health assessment, and finally after the game is over, the interaction and health status information is summarized on the mobile phone interface.

[0102] The characteristics and functions of the present invention will be further understood through the following description.

[0103] In the small fundus imaging device of this embodiment (hereinafter referred to as the product), after the user assembles the device, he or she holds the device against the eye to be tested, and rotates the sliding component with one hand to fix the eye. Click the mini program to enter the interactive interface, select the eye to be tested, and after position calibration, the eye not being tested stares at the app interface to interact with the eye position guidance.

[0104] The user can remove and wear a disposable mask, and replace the disposable eye pad. (When used by multiple people). Pick up the product, stretch the inner tube 2, rotate it to the right (or left) and lock it, and complete the assembly of the ophthalmoscope 6. Place the side of the product with the silicone pad (i.e., the two eyelid pieces 31) on the eye to be inspected, and the upper and lower opening and closing structure pads (i.e., the eye contact pad 32, which can be made of silicone or other soft and skin-friendly materials) against the upper and lower eyelids. Rotate the rotating ring 51 on the product with one hand, and the two opening and closing structures move downward (upward), open the eyelids, and wait for shooting.

[0105] The other eye (the eye that is not examined) completes eye position guidance under the guidance of the mobile phone interactive game (see the user guide of the APP for details). During this process, the camera 42 of the smart fundus ophthalmoscope automatically captures the video and uploads it to the system for image analysis and fundus health assessment. Finally, after the game is over, the interaction and health status information are summarized on the feedback interface.

[0106] Mobile interactive games are used together with the product to guide eye position and capture images. According to the principle of conjugate eye movement (left and right eyes move in the same direction), the APP uses small stars to guide the idle eye to capture the big star. In the process of staring at the big star until it disappears, the device captures the image of the tested eye. The device will send eye position interaction instructions to the mini program based on the detected image situation, guide the change of the eye position interaction position in the program, and the eye status of Mais (interactive program NPC) reminds the user whether the capture is successful.

[0107] Place the product on the eye to be tested - select the eye to be tested in the mini program - adjust the human-machine position - start the game - the eye not being tested controls the NPC to capture stars by turning the eyeball - the NPC switches between different states to provide real-time feedback on the interactive capture situation. The end page informs the user of the current eye health condition and the ratio of the fundus arteriovenous diameter, and generates a periodic change graph to help users understand the staged changes in eye health. If an abnormal ratio is detected, the mini program will automatically pop up a medical recommendation.

[0108] In summary, the small fundus imaging device of the present invention has a compact structure, is easy to carry around daily, and has a simple structure and is easy to operate. It only requires the outer cylinder and the inner cylinder to be pulled apart and rotated to fix, and then the user's eyelids are separated by a rotating ring to expose the eyeball, and then the interactive game on the mobile phone or other mobile terminals is used to achieve fundus imaging. The detection information results can be obtained through data analysis, and the user can perform fundus detection by himself without going to a medical institution, which greatly improves the early diagnosis rate and maternal and child safety. Since the structure of the small fundus imaging device of the present invention is not as complicated as that of a traditional fundus ophthalmoscope, the price is much lower than that of a traditional fundus ophthalmoscope, which is more affordable and has high diagnostic accuracy.

[0109] The above are only preferred embodiments of the present invention, and are not intended to limit the implementation methods and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A small fundus imaging device, characterized in that: The fundus imaging device comprises: The outer cylinder is open at both ends and is through-connected in the axial direction; An inner cylinder is telescopically connected to the outer cylinder via a pull-and-turn connection mechanism; an ophthalmoscope, disposed in the inner cylinder; An eyelid, movably connected to the inner cylinder via a rotary adjustment mechanism, for adjusting the user's eyes; and The camera base is detachably connected to the outer tube and is used for photographing the eye movements of the user through the ophthalmoscope.

2. The small fundus imaging device according to claim 1, characterized in that: The inner cylinder comprises: The upper inner cylinder is open at both ends and is through-connected in the axial direction; A lower inner cylinder, which is open at both ends and is axially continuous; and The ophthalmoscope connects the upper inner cylinder and the lower inner cylinder and makes the upper inner cylinder contact with the lower inner cylinder.

3. The small fundus imaging device according to claim 2, characterized in that: The pull-and-turn connection mechanism comprises: A positioning convex ring is formed on the outer side of the bottom of the lower inner cylinder in a convex manner; A positioning concave ring is formed concavely on the inner side of the outer cylinder near the top, and the positioning convex ring and the positioning concave ring are matched in size to prevent the lower inner cylinder and the outer cylinder from being separated during the stretching process; A plurality of positioning grooves are evenly arranged in the circumferential direction of the inner top of the outer cylinder; A plurality of positioning guide grooves are formed along the axis direction of the inner cylinder at positions corresponding to the positioning groove members on the outer side of the inner cylinder, and the positioning groove members are immersed in the positioning guide grooves to prevent the inner cylinder from rotating in the circumferential direction when being stretched with the outer cylinder; A positioning ring groove is arranged at the outer bottom of the lower inner cylinder and close to the positioning convex ring; A plurality of positioning blocks are connected to the surface of the positioning ring groove and are located outside the plane where the positioning guide groove extends. The positioning blocks remain horizontal with the positioning groove member when the positioning guide groove is separated from the positioning groove member, and are inserted into the positioning groove member to position and fix the lower inner cylinder and the outer cylinder when the lower inner cylinder is rotated.

4. The small fundus imaging device according to claim 3, characterized in that: The upper inner cylinder and the lower inner cylinder are respectively provided with an upper mounting hole and a lower mounting hole connected to the ophthalmoscope, and the ophthalmoscope and the upper mounting hole and the lower mounting hole are installed by interference fit so that the upper inner cylinder and the lower inner cylinder are in close contact.

5. The small fundus imaging device according to claim 4, characterized in that: The eye curtain comprises: A pair of eye curtain pieces are symmetrically mounted in the upper inner cylinder; a pair of eye contact pads, respectively detachably connected to the corresponding eye curtain members; The face contact pad is provided with an active opening for a pair of eye curtain members to pass through. The face contact pad is sleeved outside the pair of eye curtain members through the active opening and connected to the upper inner tube. When the pair of eye curtain members are active, they move away from or close to each other within the range of the active opening.

6. The small fundus imaging device according to claim 5, characterized in that: The rotation adjustment mechanism is arranged in the upper inner cylinder, and is used to control a pair of eye curtain members to move away from or towards each other, and comprises: A rotating ring, sleeved on the outside of the upper inner cylinder; A rotating base is connected to the interior of the upper inner cylinder, and one end of the rotating base passes through the upper inner cylinder and is connected to the rotating ring; A base stopper connected to the interior of the upper inner cylinder and in contact with the surface of the rotating base; The convex stopper is connected to the interior of the upper inner tube and contacts the surface of the base stopper; A pair of eye curtain parts are connected to the rotating base through fasteners and pass through the base stopper and the convex stopper; and the base stopper and the convex stopper are located between the face contact pad and the rotating base.

7. The small fundus imaging device according to claim 6, characterized in that: The inner wall of the rotating ring is provided with a connecting groove; One end of the rotating base extends outward to form a connecting block, and an observation hole and a pair of movable tracks are provided on the surface of the rotating base from top to bottom, wherein the observation hole is located in the middle of the rotating base, and the pair of movable tracks are symmetrically distributed on the outside of the observation hole; The side wall of the upper inner cylinder is provided with a moving groove; The connecting block of the rotating base passes through the moving groove and is connected to the connecting groove, the fastener passes through the moving track and is connected to a pair of eye curtain pieces, and when the rotating ring rotates, the fastener drives the pair of eye curtain pieces to move in the moving track to achieve the pair of eye curtain pieces moving away from or close to each other; The base limiting member is provided with a first limiting hole, and the convex limiting member is provided with a second limiting hole, and the first limiting hole and the second limiting hole are used to movably limit the pair of eye curtain members; The facial contact pad is provided with the movable opening whose size and structure match the second limiting hole.

8. The small fundus imaging device according to claim 7, characterized in that: The camera base comprises: A battery box, detachably connected to an opening at one end of the outer tube; A camera, fixed vertically in the middle of the battery box and facing the eyelid; An LED light, vertically fixed to the battery box and located next to the camera; and A limiting plate is sleeved on the camera and the LED lamp and connected to the opening of the outer tube, and a gap is provided between the limiting plate and the battery box.

9. The small fundus imaging device according to claim 8, characterized in that: The battery box has a power supply loading portion for mounting a power supply and a box cover.

10. A method for using the small fundus imaging device according to any one of claims 1 to 9, characterized in that: The method of use is as follows: When in use, the inner cylinder is pulled out of the outer cylinder and rotated, the inner cylinder and the outer cylinder are fixed by a pull-and-turn connection mechanism, a pair of eye curtain pieces are respectively aligned with the upper eyelid and the lower eyelid of one eye of the user, and the pair of eye curtain pieces are gradually moved away from each other by rotating the rotating ring to open the upper eyelid and the lower eyelid of the user to a suitable state and expose the eyeball; the user's other eye completes eye position guidance under the guidance of the mobile phone interactive game, the LED light provides light source, the camera records the movement of the user's eyeball, and sends the captured data to the background processor for data analysis to obtain an assessment of the fundus health status, and finally, after the game is over, the interaction and health status information is summarized on the mobile phone interface.

Images