A portable ocular surface imaging device

Abstract

This utility model discloses a portable ocular surface imaging device, relating to the field of clinical testing technology. The portable ocular surface imaging device includes a housing with an opening on one side for placing a camera inside the housing, and a Placido disk assembly. The Placido disk assembly includes a Placido disk mounted on the housing and is conical in shape. The top of the Placido disk has a through hole, and the lens of the camera is located within the projected area of ​​the through hole. By reducing the overall size of the housing, the operator can hold the device with one hand during the imaging process, making it more portable and flexible in different environments. It is more suitable for clinical examinations or home use, reducing the user's cost and difficulty of use.

Description

Technical Field

[0001] This utility model relates to the field of clinical testing technology, and more specifically, to a portable ocular surface imaging device. Background Technology

[0002] Dry eye syndrome is a disease caused by various factors leading to abnormalities in the quality, quantity, or dynamics of tears, resulting in decreased tear film stability. It is often accompanied by ocular discomfort and may cause lesions in the ocular surface tissues. Currently, commonly used methods for detecting dry eye syndrome include invasive tear film breakup time (BUT) testing, tear secretion tests, slit-lamp examination, and advanced imaging equipment. Traditional BUT testing relies on the observer's experience and the stability of the staining agent, resulting in limited accuracy. While tear secretion tests are low-cost, they are time-consuming and can cause discomfort to patients. Advanced imaging equipment can comprehensively assess dry eye symptoms, but its large size, poor portability, and high cost limit its widespread application.

[0003] Currently, there are also portable testing devices, such as the portable corneal topography acquisition system in patent number CN202010398470.3, which integrates projection, imaging and analysis modules to achieve a simplified operation process in a handheld device.

[0004] However, its portability is still insufficient, especially in clinical or examination scenarios that require frequent movement. It also requires quick replacement of different detection components as needed. Secondly, the system is expensive, which is a limiting factor for some medical institutions or individual users with limited budgets. In addition, the device is poorly adaptable and has difficulty in responding to the needs of different patients or changes in the environment, such as patients with different corneal shapes or the effects of ambient light interference.

[0005] In conclusion, how to provide a convenient and portable testing device for clinical use is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0006] In view of this, the purpose of this utility model is to provide a portable ocular surface imaging device that is easy to carry and convenient for operators to use.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A portable ocular surface imaging device, comprising:

[0009] The housing has an opening on one side for placing a camera inside the housing;

[0010] The Placido disk assembly includes a Placido disk mounted on a housing and being conical in shape. The top of the Placido disk has a through-hole, and the lens of the camera is located within the projected area of ​​the through-hole.

[0011] Furthermore, the Placido disk assembly further includes:

[0012] The mounting cover is a ring structure, the Placido disk is mounted on the mounting cover, and the mounting cover is detachably mounted on the housing.

[0013] Furthermore, the Placido disk assembly further includes:

[0014] The second support plate is fixed to the mounting cover and located on both sides of the mounting cover.

[0015] Furthermore, the present invention provides two first support plates on the shell, which are respectively located on both sides of the shell opening. The two first support plates and the two second support plates can form a closed ring structure.

[0016] Furthermore, each of the two first support plates has an anti-detachment protrusion on its opposite side, which is used to prevent the camera from detaching from the housing.

[0017] Furthermore, each of the two first support plates is provided with a locking hole, and the mounting cover is provided with a locking block that cooperates with the locking hole.

[0018] Furthermore, this utility model also includes:

[0019] The support component is a ring structure and can be detachably installed on the mounting cover for adjusting the distance between the camera and the patient's eye.

[0020] Furthermore, the support member is made of a soft material with elastic deformation function.

[0021] Furthermore, in this invention, a positioning plate for positioning the support is installed on one side of each of the two first support plates facing away from each other, and the positioning plate is provided with a fixing structure for fixing the support.

[0022] Furthermore, the housing contains a Bluetooth receiver, a Bluetooth generator, a power supply, and a controller. The Bluetooth receiver, the Bluetooth generator, and the power supply are all electrically connected to the controller. The housing has a control button and a charging port. One of the two first support plates has a reserved hole for operating the camera light button.

[0023] The portable ocular surface imaging device provided by this utility model involves placing a camera inside the housing through an opening, mounting the Placido disc inside the housing with the larger opening of the Placido disc facing the patient's eye. The Placido disc is conical in shape, with a through hole at the top. The camera lens is located within the projection area of ​​the through hole, allowing the camera to capture images of the patient's eye. The overall size of the housing is reduced, allowing the operator to hold the device with one hand during the imaging process, resulting in greater portability. This makes the device more flexible in different environments, making it more suitable for clinical examinations or home use, reducing user costs and ease of use. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the overall axial side structure provided by this utility model;

[0026] Figure 2 This is a structural schematic diagram of the overall exploded view provided by this utility model;

[0027] Figure 3 This is a structural schematic diagram of the overall side view of the present invention;

[0028] Figure 4 This is a schematic diagram of the overall front structure of the present invention;

[0029] Figure 5 This is a schematic diagram of the axial structure of the Placido disk assembly provided by this utility model;

[0030] Figure 6 This is a schematic diagram of the side structure of the Placido disk assembly provided by this utility model;

[0031] Figure 7 This is a structural schematic diagram of the cross-section of the Placido disk assembly provided by this utility model.

[0032] Figures 1-7 In the accompanying drawings, the reference numerals include:

[0033] 1. Housing; 2. Camera; 3. Placido disk assembly; 301. Placido disk; 302. Mounting cover; 303. Second support plate; 4. First support plate; 5. Anti-detachment protrusion; 6. Locking hole; 7. Locking block; 8. Support component; 9. Positioning plate; 10. Charging port; 11. Control button; 12. Reserved hole. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] The core of this invention is to provide a portable ocular surface imaging device that is easy to carry and convenient for operators to use.

[0036] Please refer to Figures 1-7 A portable ocular surface imaging device includes a housing 1 and a Placido disk assembly 3. The housing 1 has an opening on one side for placing a camera 2 inside the housing 1. The Placido disk assembly 3 includes a Placido disk 301, which is mounted on the housing 1 and is conical. The top of the Placido disk 301 has a through hole, and the lens of the camera 2 is located within the projection area of ​​the through hole.

[0037] In use, the camera 2 is placed inside the housing 1 through the opening, and the Placido disc 301 is installed on the housing 1 with the larger opening of the Placido disc 301 facing the patient's eye. The Placido disc 301 is conical in shape and has a through hole at the top. The lens of the camera 2 is located within the projection area of ​​the through hole, allowing the camera 2 to take pictures of the patient's eye. Due to the reduced overall size of the housing 1, the operator can hold the device with one hand during the shooting process, making it more portable. This makes the device more flexible to use in different environments and more suitable for clinical examinations or home use, reducing the user's operating costs and difficulty of use.

[0038] It should be noted that in this embodiment, Placido disk 301 refers to an interference ring structure with non-equidistant black and white distribution. This interference ring can be used to achieve white light interference imaging of the ocular surface under white light conditions. Furthermore, the curvature of the cornea and the state of ocular surface fluid chromatography can be calculated based on the parameters of the non-equidistant interference ring, thus providing a medical analysis function.

[0039] In addition, in this embodiment, the housing 1 can be any shape, such as a cylindrical, cuboid or polygonal structure, or a shape that matches the outer shape of the camera 2, or an ergonomic structure that is handheld.

[0040] In addition, in this embodiment of the invention, the housing 1 can be selected and customized according to the size of the camera used.

[0041] In the above embodiment, the camera 2 is customized in size according to usage requirements. Specifically, it includes a housing, inside which a light source and a macro lens are installed. The macro lens has automatic focusing and fixed focus functions. The macro lens is used to photograph the patient's eyes. The light source includes infrared light, LED light and cobalt blue light. The infrared light, LED light and cobalt blue light are arranged around the circumference of the macro lens. The camera 2 also has an infrared tracking module inside, which is used to track the relative position of the user's eyeball and the macro lens to increase the clarity of the image.

[0042] In the above embodiments, infrared lamps are used to observe the user's tear trough height and analyze meibomian gland absence, LED lamps are used to provide illumination for the macro lens, and cobalt blue lamps are used to observe whether the user's corneal surface is stained and to calculate the tear film breakup time.

[0043] Optionally, in some embodiments, a clamping structure is provided inside the housing 1 to effectively fix cameras of different sizes by clamping the camera.

[0044] Optionally, in some embodiments, the clamping structure may be provided with a rubber ring inside the housing 1, which is used to fix the camera by squeezing the rubber ring.

[0045] Optionally, in some embodiments, a filter is provided at the through-hole of the Placido disk 301. The filter is detachably installed on the Placido disk 301 to facilitate the replacement of different filters for different usage requirements, such as using an 850nm light-transmitting filter when taking pictures of the meibomian glands of patients.

[0046] Please refer to Figures 1-7To facilitate the disassembly of the Placido disk 301, in some embodiments, the Placido disk assembly 3 further includes a mounting cover 302. The mounting cover 302 has a ring structure, and the Placido disk 301 is mounted on the mounting cover 302. The mounting cover 302 is detachably mounted on the housing 1. That is, the Placido disk 301 is first mounted on the mounting cover 302, and the mounting cover 302 is detachably mounted on the housing 1. Therefore, during disassembly, only the mounting cover 302 needs to be removed, avoiding direct operation of the Placido disk 301 by the operator. This effectively prevents damage and deformation of the Placido disk 301 during disassembly, reduces the occurrence of Placido disk 301 failure, and facilitates the placement of the Placido disk 301 after disassembly, reducing the direct contact between the Placido disk 301 and the desktop. Furthermore, the detachable mounting cover 302 also facilitates the replacement of the Placido disk 301.

[0047] Optionally, in some embodiments, the mounting cover 302 can be connected to the housing 1 by magnetic attraction. Specifically, magnets are installed at corresponding positions on the mounting cover 302 and the housing 1, and the mounting cover 302 can be detached by the attraction function of the magnets.

[0048] Please continue to refer to this. Figure 1 In some embodiments, the Placido disk assembly 3 further includes two second support plates 303, which are fixed to the mounting cover 302 and located on both sides of the mounting cover 302.

[0049] Please continue to refer to this. Figures 1-7 In some embodiments, the housing 1 is provided with two first support plates 4, which are respectively located on both sides of the opening of the housing 1. The two first support plates 4 and the two second support plates 303 can form a closed ring structure. That is, the camera 2 and Placido disk 301 are placed inside the closed cylindrical structure formed by the two first support plates 4 and the two second support plates 303, so as to fulfill the purpose of enclosing the space during the shooting process, reduce the influence of ambient light on the shooting results, and help improve the accuracy of the results.

[0050] Optionally, in some embodiments, the two second support plates 303 may be integrally formed with the mounting cover 302.

[0051] Optionally, in some embodiments, the two first support plates 4 may be integrally formed with the housing 1.

[0052] In other implementations, both first support plates 4 and two second support plates 303 can be single units, as long as they can form a closed space.

[0053] Please refer to Figures 1-7 In order to prevent the camera 2 from falling off during use and to improve the stability of the camera 2, in some embodiments, anti-detachment protrusions 5 are provided on the opposite side of the two first support plates 4. The anti-detachment protrusions 5 are used to prevent the camera 2 from falling off the housing 1. That is to say, by locking the camera 2 on the side of the two anti-detachment protrusions 5 close to the housing 1, the camera 2 is fixed.

[0054] Optionally, in some embodiments, the anti-detachment protrusion 5 has a triangular or right-angled trapezoidal cross-sectional area, and the inclined surface faces the side away from the housing 1.

[0055] Optionally, in some embodiments, a rubber layer is fixed to the side of the anti-detachment protrusion 5 facing the housing 1. The elastic deformation of the rubber layer provides a pre-tightening force to the camera 2, thereby improving the fixing effect of the camera 2 and reducing the loosening of the camera 2 caused by fatigue of the anti-detachment protrusion 5 after long-term use.

[0056] Please refer to Figures 1-7 In some embodiments, both first support plates 4 are provided with locking holes 6, and the mounting cover 302 is provided with locking blocks 7 that cooperate with the locking holes 6. That is to say, the mounting cover 302 is detachable by cooperating with the locking blocks 7 and the locking holes 6.

[0057] Alternatively, in some embodiments, a magnet can be used instead of the quick-release fish-shaped hole 6, which can also achieve the detachable function of the mounting cover 302.

[0058] Please refer to Figures 1-7 In some embodiments, a support member 8 is also included. The support member 8 is a ring structure and can be detachably installed on the mounting cover 302. It is used to adjust the distance between the camera 2 and the patient's eyes. In other words, the height of the camera 2 can be finely adjusted through the support member 8, and the shooting angle can also be adjusted to meet different shooting requirements and be suitable for patients with more face shapes.

[0059] Optionally, in some embodiments, the support member 8 is made of a soft material with elastic deformation function, such as sponge, rubber, silicone, etc. This not only adapts to patients with different face shapes and further reduces the impact of ambient light on the shooting effect, but also improves the comfort during use and avoids causing discomfort to the patient's face. At the same time, it can be used as a disposable item to reduce contact between patients and thus reduce the risk of infection.

[0060] Optionally, in some embodiments, the support member 8 is provided with an annular groove, and the outermost edge of the annular groove is smaller than the distance between the two first support plates 4.

[0061] Please continue to refer to this. Figures 1-7In some embodiments, a positioning plate 9 for positioning the support member 8 is installed on the opposite side of the first support plate 4. The positioning plate 9 is provided with a fixing structure for fixing the support member 8. That is, the position of the support member 8 is fixed by the positioning plate 9, thereby improving the fixing stability of the support member 8.

[0062] Optionally, in some embodiments, the positioning plate 9 is provided with a plurality of fixed protrusions, and the support member 8 is provided with a fixed groove opposite to the fixed protrusions. When the fixed groove is fitted onto the fixed protrusion, the support member 8 is fixed to the positioning plate 9.

[0063] In other embodiments, double-sided adhesive is adhered to the support member 8, which is then bonded to the positioning plate 9 during use to achieve rapid fixation of the support member 8.

[0064] Optionally, in some embodiments, the housing 1 is equipped with a Bluetooth receiver, a Bluetooth generator, a power supply, and a controller. The Bluetooth receiver, Bluetooth generator, and power supply are all electrically connected to the controller. That is, in use, by adding a Bluetooth receiver and a Bluetooth generator, the bracket is equipped with Bluetooth functionality, and the power supply has the function of storing backup power. This allows the operator to collect eye images without touching the device, improving the convenience of operation and the stability of shooting, and helping to increase the success rate of shooting.

[0065] Optionally, in some embodiments, the housing 1 is provided with a control button 11 and a charging port 10. The control button 11 is used to control the Bluetooth function of the bracket, and the charging port 10 is used to charge the power supply.

[0066] Please refer to Figures 1-7 In order to facilitate the control of the camera's lights, in some embodiments, one of the two support legs is provided with a reserved hole 12 for operating the camera's light button. That is, the camera is provided with a light button that protrudes from the camera body. Therefore, the reserved hole 12 on the support leg is used for the light button to extend out. On the one hand, this facilitates the operator's control of the camera's lights. On the other hand, when the light button protrudes through the reserved hole 12, it helps to further limit the camera and improve the camera's stability during use.

[0067] Optionally, in some embodiments, both the two second support plates 303 and the housing 1 are provided with semi-circular wire holes, which are used to lead out the connection wire of the camera 2, while ensuring that the camera 2 is sealed when in use.

[0068] In other words, the key point of this utility model embodiment is that the Placido disc 301 is used to meet the purpose of imaging the patient's eyes. The Placido disc 301 is first installed on the mounting cover 302, which is detachably installed on the housing 1. Therefore, only the mounting cover 302 needs to be removed during disassembly, avoiding direct operation of the Placido disc 301 by the operator. This can effectively prevent damage and deformation of the Placido disc 301 during disassembly, reduce the occurrence of Placido disc 301 failure, and facilitate the placement of the Placido disc 301 after disassembly, reducing the direct contact between the Placido disc 301 and the table. Furthermore, the detachable mounting cover 302 also facilitates the replacement of the Placido disc 301.

[0069] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0070] The portable ocular surface imaging device provided by this utility model has been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of this utility model.

Claims

1. A portable ocular surface imaging device, characterized in that, include: The housing (1) has an opening on one side for placing a camera (2) inside the housing (1); Placido disk assembly (3), the Placido disk assembly (3) includes a Placido disk (301), the Placido disk (301) is mounted on the housing (1) and is conical, the top of the Placido disk (301) is provided with a through hole, and the lens of the shooting camera (2) is located within the projected area of ​​the through hole.

2. The portable ocular surface imaging device according to claim 1, characterized in that, The Placido disk assembly (3) also includes: Mounting cover (302), which is a ring structure, and Placido disk (301) is mounted on mounting cover (302). Mounting cover (302) is detachably mounted on housing (1).

3. A portable ocular surface imaging device according to claim 2, characterized in that, The Placido disk assembly (3) also includes: The second support plate (303) is fixed on the mounting cover (302) and located on both sides of the mounting cover (302).

4. A portable ocular surface imaging device according to claim 3, characterized in that, The shell (1) is provided with two first support plates (4), which are located on both sides of the opening of the shell (1). The two first support plates (4) and the two second support plates (303) can form a closed ring structure.

5. A portable ocular surface imaging device according to claim 4, characterized in that, Each of the two first support plates (4) has an anti-detachment protrusion (5) on its opposite side, which is used to prevent the camera (2) from detaching from the housing (1).

6. A portable ocular surface imaging device according to claim 5, characterized in that, Both of the first support plates (4) are provided with a locking hole (6), and the mounting cover (302) is provided with a locking block (7) that cooperates with the locking hole (6).

7. A portable ocular surface imaging device according to claim 6, characterized in that, Also includes: The support member (8) is a ring structure and can be detachably installed on the mounting cover (302) for adjusting the distance between the camera (2) and the patient's eye.

8. A portable ocular surface imaging device according to claim 7, characterized in that, The support member (8) is made of a soft material with elastic deformation function.

9. A portable ocular surface imaging device according to claim 8, characterized in that, Each of the two first support plates (4) is equipped with a positioning plate (9) for positioning the support member (8) on one side opposite to the other. The positioning plate (9) is provided with a fixing structure for fixing the support member (8).

10. A portable ocular surface imaging device according to any one of claims 4-9, characterized in that, The housing (1) is equipped with a Bluetooth receiver, a Bluetooth generator, a power supply and a controller. The Bluetooth receiver, the Bluetooth generator and the power supply are all electrically connected to the controller. The housing (1) is equipped with a control button (11) and a charging port (10). One of the two first support plates (4) is equipped with a reserved hole (12) for operating the light button of the shooting camera (2).

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