Face fixing device for strabismus measuring instrument

Abstract

The utility model relates to the technical field of medical instruments, and particularly discloses a face fixing device for a strabismus measuring instrument, which comprises a main machine shell, a face fixing device and a face fixing device, and a measuring window is arranged on one side of the main machine shell; the chin support structure is movably fixed to the position, corresponding to the front of the bottom of the measuring window, of the main machine shell; the forehead support structure is movably fixed to the position, corresponding to the position over the top of the measuring window, of the main machine shell. According to the strabismus measuring instrument, measuring errors caused by unstable head position in the measuring process of the strabismus measuring instrument are avoided, comprehensive support is provided for the face of an observer, and the measuring consistency is guaranteed by limiting the face detection position and angle.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a facial fixation device for a strabismus measuring instrument. Background Technology

[0002] Strabismus is a common clinical eye condition affecting 2% to 5% of the population. Patients with strabismus cannot properly coordinate their eyes when viewing. Eye misalignment is a common occurrence in strabismus patients. When making eye contact with a patient, the misalignment of their eyes can cause confusion for others. Strabismus is not only a cosmetic defect but also triggers a wide range of visual impairments, such as diplopia, amblyopia, and impaired stereopsis, leading to impaired motor skills, especially during visual-motor tasks such as grasping or postural stability. Furthermore, strabismus can have a range of negative psychological and emotional impacts on patients.

[0003] A strabismus measuring instrument is a specialized device used to assess and quantify eye alignment deviations and eye movements. It plays a crucial role in clinical ophthalmology and optometry, primarily assisting doctors in diagnosing eye alignment abnormalities and customizing treatment plans. During strabismus measurement, it is essential to ensure the patient's head is in a stable and appropriate position to guarantee the accuracy of the measurement data. However, existing strabismus measuring instruments have several shortcomings in their facial fixation mechanisms. For example, they require the doctor to manually control the patient's facial position and rely heavily on the patient's cooperation, making them susceptible to influences from the doctor's subjective factors, operating experience, and judgment, leading to inconsistent or inaccurate measurement results.

[0004] Therefore, there is still room for improvement in the facial fixation devices of existing strabismus measurement instruments. Utility Model Content

[0005] The main purpose of this invention is to provide a face fixation device for a strabismus measuring instrument, which avoids measurement errors caused by unstable head position during the strabismus measuring instrument measurement process, provides full support for the observer's face, and ensures measurement consistency by limiting the face detection position and angle.

[0006] According to one aspect of the present invention, a face fixation device for a strabismus measuring instrument is provided, comprising:

[0007] The main unit housing has a measuring window on one side;

[0008] A chin support structure, which is movably fixed to the main housing at the position directly in front of the bottom of the measuring window;

[0009] A forehead support structure is movably fixed to the main housing at a position directly above the top of the measuring window.

[0010] According to one embodiment of the present invention, it further includes a cheekbone support structure, which is movably fixed to the main unit housing at symmetrical positions on the left and right sides corresponding to the measuring window.

[0011] According to one embodiment of the present invention, the cheekbone support structure includes:

[0012] The first bonding block is used to fit closely to the observer's cheekbone;

[0013] A first motor structure, which is communicatively connected to the first bonding block, is used to drive the first bonding block to swing so as to cause the observer's head to rotate left and right.

[0014] According to one embodiment of the present invention, the chin support structure further includes a base, the base including a support block and a limiting block, the limiting block being disposed at the front end of the support block and extending in a vertical direction, the support block being configured as an upward-opening arc-shaped curved surface structure, used to cooperate with the limiting block to support the observer's chin.

[0015] According to one embodiment of the present invention, the chin support structure further includes a buffer layer, which surrounds the outside of the base, and the material of the buffer layer includes silicone or rubber.

[0016] According to one embodiment of the present invention, the chin support structure further includes a lifting mechanism for adjusting the height of the base, wherein the top of the lifting mechanism is rotatably connected to the bottom of the base via a hinge.

[0017] According to one embodiment of the present invention, the lifting mechanism further includes a sleeve, an adjusting rod, and a driving structure. The sleeve is a hollow structure, and its bottom is fixed to the main housing. The adjusting rod is inserted into the sleeve, and its upper end extends out of the sleeve and connects to the bottom of the base. A crawling tooth is provided on one side of the adjusting rod. The driving structure is sleeved on the outside of the adjusting rod and meshes with the crawling tooth, and is fitted and fixed inside the sleeve near its top end.

[0018] According to one embodiment of the present invention, the chin support structure further includes a second motor structure, which is communicatively connected to the base and the drive structure, respectively, for controlling the base to swing in an arc in the horizontal direction and controlling the drive structure to drive the adjusting rod to crawl in the vertical direction.

[0019] According to one embodiment of the present invention, a sliding mechanism is also included, which is connected to the forehead support structure and is used to adjust the horizontal position of the forehead support structure (3) by sliding.

[0020] According to one embodiment of the present invention, the forehead support structure further includes a mounting base and a second fitting block movably fixed to the mounting base. The second fitting block is configured as an arc-shaped curved surface structure with an opening facing forward, for close fitting with the observer's forehead.

[0021] In the technical solution of this utility model, the combination of a chin support structure, a forehead support structure, and a cheekbone support structure conforms to the observer's face, providing stable support for the observer's head, reducing head movement, avoiding measurement errors caused by poor observer cooperation and unstable head position during strabismus measurement, ensuring that the head position and angle are consistent in each measurement, thus guaranteeing measurement consistency. Furthermore, the chin support structure, forehead support structure, and cheekbone support structure can also be combined to fine-tune the head position, reducing the burden on doctors or operators who need to rely on manual control of the head position, making head position adjustment simple and quick, and greatly reducing reliance on subjective factors, operational experience, and judgment of doctors or operators, thereby improving measurement accuracy. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some implementation examples of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A schematic diagram of a face fixation device for a strabismus measuring instrument according to an embodiment of the present invention is shown;

[0024] Figure 2 Another schematic diagram of a face fixation device for a strabismus measuring instrument according to an embodiment of the present invention is shown;

[0025] Figure 3 A complete schematic diagram of a chin support structure according to an embodiment of the present invention is shown;

[0026] Figure 4 A partial schematic diagram of a chin support structure according to an embodiment of the present invention is shown;

[0027] Figure 5 A schematic diagram of the forehead support structure according to an embodiment of the present invention is shown.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Main unit housing; 11. Measuring window; 2. Chin support structure; 21. Base; 22. Support block; 23. Limiting block; 24. Sleeve; 25. Adjusting rod; 26. Drive structure; 3. Forehead support structure; 31. Mounting seat; 32. Second fitting block; 4. Cheekbone support structure. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be further described in detail below with reference to specific examples and accompanying drawings.

[0031] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0032] like Figure 1 As shown, this utility model proposes a face fixation device for a strabismus measuring instrument, comprising:

[0033] Main unit housing 1, with a measuring window 11 provided on one side of the main unit housing 1;

[0034] Chin support structure 2, which is movably fixed to the front of the bottom of the measuring window 11 on the main housing 1;

[0035] The forehead support structure 3 is movably fixed to the top of the measuring window 11 on the main housing 1.

[0036] In some embodiments, such as Figure 1-4 As shown, the chin support structure 2 is fixed to the main unit housing 1, located directly in front of the bottom center of the measuring window 11. The chin support structure 2 can be divided into two parts: a top base 21 and a bottom lifting structure, with the base 21 covered by a buffer layer. The chin support structure 2 supports the observer's chin, and its movable and fixed design allows for vertical height adjustment to accommodate different observers' chin heights. By ensuring the chin fits snugly against the chin support structure 2, the face position is always kept at a fixed height, avoiding measurement deviations caused by the observer's inability to maintain a stable height.

[0037] In some embodiments, such as Figure 1 , Figure 2 and Figure 5 As shown, the forehead support structure 3 is fixed to the main unit housing 1 and located directly above the center of the measurement window. The forehead support structure 3 is used to support the observer's forehead. By ensuring that the forehead is tightly fitted to the forehead support structure 3, the face position is kept in a fixed position, thus avoiding the problem of inaccurate test results caused by the observer's head moving back and forth.

[0038] In some embodiments, the movable fixation design of the chin support structure 2 and forehead support structure 3 further allows for horizontal angular adjustment to adjust the observer's facial orientation and angle. The chin support structure 2 and forehead support structure 3 work together to fix the facial position and adjust the range of lateral facial movement, eliminating the need for the observer to consciously maintain a fixed posture and for the doctor to manually control the patient's facial position. This reduces reliance on the observer's cooperation and the influence of the doctor's subjective factors, operational experience, and judgment during strabismus measurement. The combination of the chin support structure 2 fixing the chin and the forehead support structure 3 fixing the forehead ensures consistency in the observer's head posture and facial position during multiple measurements, avoiding measurement errors caused by unstable head position during multiple measurements, and improving data accuracy and consistency across multiple measurements.

[0039] According to one embodiment of the present invention, it also includes a cheekbone support structure 4, which is movably fixed to the left and right symmetrical positions corresponding to the measuring window 11 on the main unit housing 1.

[0040] According to one embodiment of the present invention, the cheekbone support structure 4 includes: a first fitting block, which is used to fit closely to the cheekbone of the observer; and a first motor structure, which is communicatively connected to the first fitting block and is used to drive the first fitting block to swing so as to drive the observer's head to rotate left and right.

[0041] In some embodiments, such as Figure 2As shown, the cheekbone support structure 4 is located on the left and right sides of the measuring window on the main unit housing 1, corresponding to the cheekbone area of ​​the observer's face. The cheekbone support structure 4 includes two parts: a first fitting block and a first motor structure. The first fitting block is a flexible component that directly contacts the observer's cheekbone, and its shape is designed to conform to the structure of the human cheekbone to ensure the observer's comfort and stability. The first fitting block can be fixed to the main unit housing 1 by a multi-joint telescopic arm, which can rotate and swing around a fixed point. In the initial non-operating state, the first fitting block is fixed on the left and right sides of the measuring window and fitted into the main unit housing 1, at which time the telescopic arm is in a retracted state. In the operating state, the telescopic arm is driven by the first motor structure, controlling the first fitting block to move to a position matching the observer's cheekbone, at which time the telescopic arm is in an extended state. The first motor structure can drive the first fitting block to move to a designated position and fit against the observer's cheekbone according to control commands. These control commands can be generated by the strabismus measuring instrument after processing and capturing the position of the observer's cheekbone using its internal camera and image processing technology. The cheekbone support structure 4 fixes the cheekbone, which not only adapts to observers with different face shapes but also avoids problems such as inaccurate eye position data caused by the observer's head shifting left and right during the measurement process, ensuring the accuracy of the measurement results. In some embodiments, the cheekbone support structure 4 fixes the cheekbone, the chin support structure 2 fixes the chin, and the forehead support structure 3 fixes the forehead, combining multi-point fixation to provide comprehensive support for the observer's face. Furthermore, the movable fixation design of the cheekbone support structure 4 also allows it to be adjusted horizontally after the observer's face position is fixed. Specifically, during the measurement process, based on the observer's line of sight data, the first motor structure drives the first contact block to swing left and right, adjusting the observer's face position so that the line of sight meets the measurement requirements. At this time, the chin support structure 2 and the forehead support structure 3 can adaptively swing left and right to complete fine adjustments. The swing range is (-10°, +10°), which can be further adjusted according to actual business needs. This avoids the problem of insufficient facial offset correction in the prior art.

[0042] According to one embodiment of the present invention, the chin support structure 2 further includes a base 21, the base 21 including a support block 22 and a limiting block 23, the limiting block 23 is disposed at the front end of the support block 22 and extends in the vertical direction, the support block 22 is configured as an arc-shaped curved surface structure with the opening facing upward, used to cooperate with the limiting block 23 to support the observer's chin.

[0043] According to one embodiment of the present invention, the chin support structure 2 further includes a buffer layer, which surrounds the outside of the base 21, and the material of the buffer layer includes silicone or rubber.

[0044] In some embodiments, the base 21 includes an ergonomically concave support block 22 that fits into the observer's chin, i.e., an upward-opening arcuate curved surface structure, and a limiting block 23 located at the front end of the support block 22 and extending vertically to limit the position of the observer's chin and prevent excessive head movement. The buffer layer uses a soft material, such as silicone or rubber, to provide comfortable support and effectively absorb pressure by matching the support block 22 and the limiting block 23.

[0045] According to one embodiment of the present invention, the chin support structure 2 further includes a lifting mechanism for adjusting the height of the base, and the top of the lifting mechanism is rotatably connected to the bottom of the base 21 via a hinge.

[0046] According to one embodiment of the present invention, the lifting mechanism further includes a sleeve 24, an adjusting rod 25, and a driving structure 26. The sleeve 24 is a hollow structure, and its bottom is fixed to the main housing 1. The adjusting rod 25 is inserted into the sleeve 24, and its upper end extends out of the sleeve 24 and connects to the bottom of the base 21. A crawling tooth is provided on one side of the adjusting rod 25. The driving structure 26 is sleeved on the outside of the adjusting rod 25 and meshes with the crawling tooth, and is fitted and fixed inside the sleeve 24 near its top end.

[0047] In some embodiments, the top of the sleeve 24 is fixed to the main housing 1 by bolts or snap-fits. The lifting structure adjusts the height of the upper end of the internal adjusting rod 25 extending out of the sleeve 24 through the drive structure 26. A crawling tooth is provided on one side of the adjusting rod 25. The drive structure 26 is sleeved on the outside of the adjusting rod 25 and engages with the crawling tooth, and is fitted and fixed inside the sleeve 24 near its top end. A mature ratchet lifting structure is adopted. The ratchet lifting structure provides height adjustment function in a manner similar to a ratchet mechanism, ensuring that the base 21 can be adjusted to a suitable position so that the observer's chin can be comfortably placed.

[0048] According to one embodiment of the present invention, the chin support structure 2 further includes a second motor structure, which is communicatively connected to the base 21 and the drive structure 26, respectively, for controlling the base 21 to swing in an arc in the horizontal direction and controlling the drive structure 26 to drive the adjusting rod 25 to crawl in the vertical direction.

[0049] In some embodiments, to improve the ease of adjustment, the chin support structure 2 is also equipped with an electric mechanism, namely a second motor structure, to automatically adjust the position of the lifting structure and the base 21. The second motor structure can control the base 21 to move to a specified height according to control commands. These control commands can be generated by the strabismus measuring instrument after processing and capturing the observer's eye height position using its internal camera and image processing technology. Specifically, based on the observer's eye height position data, the second motor structure controls the drive structure 26 to drive the adjustment rod 25 to crawl vertically, moving the base 21 vertically until it fits the observer's chin and the observer's face height is adjusted to meet the measurement requirements. The design of the chin support structure 2 also allows the base 21 to swing in an arc within a certain range in the horizontal direction (left and right). That is, during the measurement process, the horizontal offset angle of the base 21 can be finely adjusted by the second motor structure based on the observer's line of sight data to finely adjust the left and right offset of the observer's head, adjusting the observer's face position to meet the measurement requirements. The swing range is (-10°, +10°), and this swing range can be further adjusted according to actual business needs.

[0050] According to one embodiment of the present invention, a sliding mechanism is also included, which is connected to the forehead support structure 3 and is used to adjust the horizontal position of the forehead support structure 3 by sliding.

[0051] According to one embodiment of the present invention, the forehead support structure 3 further includes a mounting base 31 and a second fitting block 32 movably fixed on the mounting base 31. The second fitting block 32 is configured as an arc-shaped curved surface structure with an opening facing forward, for close fitting with the observer's forehead.

[0052] In some embodiments, the forehead support structure 3 includes two parts: a mounting base 31 and a second contact block 32. The mounting base 31 extends vertically along the measuring window 11 and is located away from the measuring window 11. The second contact block 32 is a soft contact block with a concave arc shape, i.e., an arc-shaped curved surface structure with the opening facing forward, designed to make close contact with the observer's forehead to ensure head stability. To precisely adjust the head angle, the second contact block 32 can swing left and right within a range of (-10°, +10°). Specifically, the second contact block 32 can adaptively swing left and right to perform fine adjustments in accordance with the adjustments made to the face position by the cheekbone support structure 4 and the chin support structure 2.

[0053] In some embodiments, the forehead support structure 3 can cooperate with a sliding mechanism on the main unit housing 1 to slide horizontally relative to the main unit housing 1, thereby adjusting the horizontal position of the forehead support structure 3 so that the observer's line of sight meets the measurement requirements. This function can be coordinated with the left and right swinging of the second contact block 32 to fine-tune the observer's head posture to adapt to the needs of different observers.

[0054] According to one embodiment of this utility model, the chin support structure 2, forehead support structure 3, and cheekbone support structure 4 work together to provide comprehensive support for the observer's head. By precisely adjusting the observer's head position and angle, consistent angles are ensured for each measurement, avoiding measurement errors caused by unstable head position. In summary, the device design of this utility model places great emphasis on ergonomics and accuracy, incorporating multiple adjustment functions such as lifting, swinging, and sliding, which can adjust the head posture according to different observers' body characteristics, thereby ensuring accuracy and consistency during measurement.

[0055] This invention utilizes a combination of a chin support structure, a forehead support structure, and a cheekbone support structure to conform to the observer's face, providing stable support for the observer's head, reducing head movement, and avoiding measurement errors caused by unstable head position during strabismus measurement due to poor observer cooperation. It ensures consistent head position and angle in each measurement, guaranteeing measurement consistency. Furthermore, the chin support structure, forehead support structure, and cheekbone support structure can be combined to fine-tune the head position, reducing the burden on doctors or operators who need to manually control the head position, making head position adjustment simple and quick. This significantly reduces reliance on subjective factors, operational experience, and judgment of doctors or operators, thereby improving measurement accuracy.

[0056] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Within the framework of the present invention, technical features of the above embodiments or different embodiments can also be combined, and many other variations of different aspects of the present invention exist, which are not provided in the details for the sake of brevity. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A face fixation device for a strabismus measuring instrument, characterized in that, include: The main unit housing (1) has a measuring window (11) on one side. A chin support structure (2) is movably fixed to the main housing (1) at the position directly in front of the bottom of the measuring window (11); The forehead support structure (3) is movably fixed to the main housing (1) at the position directly above the top of the measuring window (11).

2. The apparatus according to claim 1, characterized in that, It also includes a cheekbone support structure (4), which is movably fixed to the main housing (1) at symmetrical positions on the left and right sides corresponding to the measuring window (11).

3. The apparatus according to claim 2, characterized in that, The cheekbone support structure (4) includes: The first bonding block is used to fit closely to the observer's cheekbone; A first motor structure, which is communicatively connected to the first bonding block, is used to drive the first bonding block to swing so as to cause the observer's head to rotate left and right.

4. The apparatus according to claim 1, characterized in that, The chin support structure (2) also includes a base (21), which includes a support block (22) and a limiting block (23). The limiting block (23) is located at the front end of the support block (22) and extends vertically. The support block (22) is configured as an arc-shaped curved surface structure with an upward opening, which is used to cooperate with the limiting block (23) to support the observer's chin.

5. The apparatus according to claim 4, characterized in that, The chin support structure (2) also includes a buffer layer, which surrounds the outside of the base (21), and the material of the buffer layer includes silicone or rubber.

6. The apparatus according to claim 4, characterized in that, The chin support structure (2) also includes a lifting mechanism for adjusting the height of the base. The top of the lifting mechanism is rotatably connected to the bottom of the base (21) via a hinge.

7. The apparatus according to claim 6, characterized in that, The lifting mechanism also includes a sleeve (24), an adjusting rod (25), and a drive structure (26). The sleeve (24) is a hollow structure, and its bottom is fixed to the main housing (1). The adjusting rod (25) is inserted into the sleeve (24), and its upper end extends out of the sleeve (24) and connects to the bottom of the base (21). A crawling tooth is provided on one side of the adjusting rod (25). The drive structure (26) is sleeved on the outside of the adjusting rod (25) and meshes with the crawling tooth, and is fitted and fixed inside the sleeve (24) near its top end.

8. The apparatus according to claim 7, characterized in that, The chin support structure (2) also includes a second motor structure, which is communicatively connected to the base (21) and the drive structure (26) respectively, for controlling the base (21) to swing in an arc in the horizontal direction, and controlling the drive structure (26) to drive the adjusting rod (25) to crawl in the vertical direction.

9. The apparatus according to claim 1, characterized in that, It also includes a sliding mechanism, which is connected to the forehead support structure (3) and is used to adjust the horizontal position of the forehead support structure (3) by sliding.

10. The apparatus according to claim 9, characterized in that, The forehead support structure (3) also includes a mounting base (31) and a second fitting block (32) movably fixed to the mounting base (31). The second fitting block (32) is configured as an arc-shaped curved surface structure with an opening facing forward, for close fitting with the observer's forehead.

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