Ophthalmic examination auxiliary equipment

Abstract

The invention discloses ophthalmic examination auxiliary equipment, and relates to the technical field of ophthalmic examination assistion.The ophthalmic examination auxiliary equipment is characterized in that the ophthalmic examination auxiliary equipment comprises a base, two opposite mounting plates are arranged on the base, an eye positioning structure is arranged between the two mounting plates, and head fixing structures are symmetrically arranged on the eye positioning structure; a synchronous structure is arranged between the head fixing structure and the eye positioning structure and used for helping the eye positioning structure and the head fixing structure move synchronously. The eye position of a patient can be accurately positioned through the eye positioning structure, the head of the patient can be effectively fixed through the head fixing structure, meanwhile, the eye positioning structure and the head fixing structure are helped to synchronously move through the synchronization structure, and when the head of the patient slightly shakes, the eye positioning structure always moves along with the head of the patient; the deviation of the eyes of the patient and the examination equipment is avoided, so that the accuracy of the eye examination data information of the patient is ensured.

Description

Technical Field

[0001] The invention patent relates to the field of ophthalmic examination auxiliary technology, specifically, to an ophthalmic examination auxiliary device. Background Art

[0002] An eye examination is a systematic examination used to assess the health of the eyes, visual function, and the presence of eye diseases. It usually includes vision tests, refraction tests, anterior segment examinations, fundus examinations, intraocular pressure tests, visual field tests, and special examinations. Eye examinations can detect eye diseases such as glaucoma, cataracts, and retinopathy at an early stage, and timely treatment can prevent further deterioration of vision. At the same time, eye health can be monitored. For people at risk of eye diseases, such as diabetics and patients with high myopia, regular examinations can help detect lesions in a timely manner.

[0003] During an ophthalmic examination, in order to ensure the accuracy of the patient's eye examination data, the patient's head needs to be fixed to prevent the patient's head from shaking and the patient's eyes from shifting from the examination equipment. Currently available ophthalmic examination auxiliary equipment completely fixes the patient's head to prevent the patient's eyes from shifting from the examination equipment. However, the current ophthalmic examination auxiliary equipment still has the following problems: (1) Depending on the ophthalmic examination items, the required examination time may be long or short. When the patient's head is completely fixed for a long time, the patient's neck muscles will continue to be tense and fatigued, gradually becoming stiff, and at the same time increase the pressure on the patient's cervical intervertebral disc, and even cause cervical spondylosis; (2) For older and younger patients, completely fixing the patient's head for a long time obviously has certain risks and is very likely to cause discomfort to the patient.

[0004] Therefore, the present invention aims to provide an ophthalmological examination auxiliary device to solve the above-mentioned problems. Summary of the invention

[0005] The object of the present invention is to provide an ophthalmic examination auxiliary device. The present invention can accurately locate the patient's eye position through an eye positioning structure to ensure that the patient's line of sight is always within the structure. At the same time, the head fixing structure can effectively fix the patient's head to avoid inspection errors caused by head shaking. The synchronization structure is used to help the eye positioning structure and the head fixing structure move synchronously. When the patient's head shakes slightly, the eye positioning structure always moves with the patient's head position, and the relative position thereof does not change, thereby avoiding deviation between the patient's eyes and the inspection equipment, thereby ensuring the accuracy of the patient's eye inspection data information.

[0006] The present invention is implemented as follows: an ophthalmic examination auxiliary device includes a base, two opposite mounting plates are provided on the base, an eye positioning structure is provided between the two mounting plates, a head fixing structure is symmetrically provided on the eye positioning structure, a synchronization structure is provided between the head fixing structure and the eye positioning structure, and the synchronization structure is used to help the eye positioning structure and the head fixing structure move synchronously.

[0007] By adopting the above technical solution, an eye positioning structure is arranged between the two mounting plates. The eye positioning structure can accurately locate the patient's eye position and ensure that the patient's line of sight is always within the structure, which is convenient for subsequent ophthalmic examinations. At the same time, a head fixing structure is symmetrically arranged on the eye positioning structure. The head fixing structure can effectively fix the patient's head to avoid inspection errors caused by head shaking. A synchronization structure is also arranged between the head fixing structure and the eye positioning structure. The synchronization structure is used to help the eye positioning structure and the head fixing structure to move synchronously. When the patient's head shakes slightly, the eye positioning structure always moves with the patient's head position, and its relative position does not change, thereby avoiding the deviation of the patient's eyes and the inspection equipment, thereby ensuring the accuracy of the patient's eye inspection data information.

[0008] Furthermore, the eye positioning structure includes two fixing rods and an eye protection cover, one end of the two fixing rods is fixedly connected to the eye protection cover, the ends of the two fixing rods away from the eye protection cover are respectively fixedly connected to two mounting plates, and the eye protection cover is symmetrically provided with inspection through holes.

[0009] By adopting the above technical solution, one end of the two fixing rods is fixedly connected to the eye protection shield, and the ends of the two fixing rods away from the eye protection shield are respectively fixedly connected to the two mounting plates, and the eye protection shield is symmetrically provided with inspection holes, so that the eye protection shield is located at the center of the entire eye positioning structure. At the same time, the inspection holes correspond to the patient's eye position, which can accurately locate the patient's eye position and ensure that the patient's line of sight is within the structure.

[0010] Furthermore, the head fixing structure includes two first screws, a second screw, a double-headed screw sleeve, a handle sleeve and an arc-shaped seat. The first screw and the second screw have opposite rotation directions. The two ends of the double-headed screw sleeve are respectively threadedly connected to the first screw and the second screw. The handle sleeve is sleeved on the side wall of the double-headed screw sleeve. The ends of the first screw and the second screw away from the double-headed screw sleeve are respectively connected to the mounting plate and the arc-shaped seat.

[0011] By adopting the above technical solution, the two ends of the double-headed screw sleeve are threadedly connected to the first screw and the second screw respectively, the sleeve is sleeved on the side wall of the double-headed screw sleeve, and the ends of the first screw and the second screw away from the double-headed screw sleeve are connected to the mounting plate and the arc seat respectively. By rotating the sleeve, the first screw and the second screw can be driven to approach or move away from each other, so that the distance between the arc seat and the patient's head can be quickly adjusted, and at the same time, the device can be suitable for patients with different head sizes.

[0012] Furthermore, the head fixing structure also includes two telescopic rods, both ends of which are fixedly connected to the mounting plate and the arc-shaped seat respectively, and the two telescopic rods are symmetrically arranged on both sides of the double-headed screw sleeve.

[0013] By adopting the above technical solution, the two ends of the two telescopic rods are fixedly connected to the mounting plate and the arc seat respectively, and the two telescopic rods are symmetrically arranged on both sides of the double-headed screw sleeve. When the distance between the arc seat and the patient's head is adjusted by using the handle sleeve, the two telescopic rods can also change their own lengths to adapt to the patient's head. At the same time, the two telescopic rods can support the patient's head, further improving the stability of the head fixing structure.

[0014] Further, the synchronization structure includes a third screw, a first sliding cylinder, a first coil spring, a bevel gear 1, a rotating rod 1, two universal joints, a transmission rod, a rotating rod 2, a bevel gear 2, a fourth screw and a second sliding cylinder; one end of the third screw is connected to the arc seat, and the other end of the third screw is slidably connected to the first sliding cylinder, the two ends of the first coil spring are respectively connected to the third screw and the first sliding cylinder and are located in the first sliding cylinder, the end of the first sliding cylinder away from the third screw is connected to the second screw, one end of the rotating rod 1 is fixedly connected to the bevel gear 1, one end of the rotating rod 2 is fixedly connected to the bevel gear 2, both ends of the transmission rod are connected to the rotating rod 1 and the rotating rod 2 through universal joints, one end of the fourth screw is connected to the eye protection cover, the other end of the fourth screw is slidably connected to the second sliding cylinder, the end of the second sliding cylinder away from the fourth screw is connected to the fixed rod, the bevel gear 1 is meshed with the third screw, and the bevel gear 2 is meshed with the fourth screw.

[0015] By adopting the above technical solution, one end of the third screw is connected to the arc seat, the other end of the third screw is slidably connected to the first sliding cylinder, the two ends of the first coil spring are respectively connected to the third screw and the first sliding cylinder and are located in the first sliding cylinder, the end of the first sliding cylinder away from the third screw is connected to the second screw, one end of the rotating rod one is fixedly connected to the bevel gear one, one end of the rotating rod two is fixedly connected to the bevel gear two, both ends of the transmission rod are connected to the rotating rod one and the rotating rod two through a universal joint, one end of the fourth screw is connected to the eye protection cover, and the other end of the fourth screw is connected to the second sliding cylinder Sliding connection, the end of the second sliding cylinder away from the fourth screw is connected to the fixed rod, the bevel gear one is meshed with the third screw, and the bevel gear two is meshed with the fourth screw. When extrusion or tension is generated on the third screw, the third screw drives the rotating rod one to rotate through the bevel gear one, and the rotating rod one drives the rotating rod two to rotate by using the universal joint and the transmission rod, and the rotating rod two drives the fourth screw to rotate through the bevel gear two, thereby achieving the purpose of controlling the eye protection cover to always move synchronously with the patient's head, avoiding the deviation of the patient's eyes and the eye protection cover, and ensuring the authenticity of the patient's eye data during the ophthalmic examination.

[0016] Furthermore, the synchronization structure also includes a fifth screw, a third sliding cylinder, a second coil spring and a bevel gear three; one end of the fifth screw is connected to the arc seat, the other end of the fifth screw is slidably connected to the third sliding cylinder, the two ends of the second coil spring are respectively connected to the fifth screw and the third sliding cylinder and are located in the third sliding cylinder, the end of the third sliding cylinder away from the fifth screw is fixedly connected to the second screw, the thread rotation direction of the bevel gear three is opposite to that of the bevel gear one, the bevel gear three is sleeved on the rotating rod one, and the bevel gear three is meshed with the fifth screw.

[0017] By adopting the above technical scheme, one end of the fifth screw is connected to the arc seat, and the other end of the fifth screw is slidably connected to the third sliding cylinder, the two ends of the second coil spring are respectively connected to the fifth screw and the third sliding cylinder and are located in the third sliding cylinder, and the end of the third sliding cylinder away from the fifth screw is fixedly connected to the second screw, the thread rotation direction of the bevel gear three is opposite to that of the bevel gear one, the bevel gear three is sleeved on the rotating rod one, and the bevel gear three is meshed with the fifth screw. At this time, the fifth screw simultaneously drives the rotating rod one to rotate through the bevel gear three, and then synchronously drives the eye protection cover to move synchronously with the patient's head. Here, the thread rotation direction of the bevel gear three is opposite to that of the bevel gear one, and the third screw and the fifth screw can simultaneously use the bevel gear one and the bevel gear three to drive the rotating rod to rotate in the same direction, so that a slight rotation of the patient's head can also accurately drive the eye protection cover to move synchronously, and at the same time, the coordinated work of the third screw and the fifth screw can further improve the stability of the synchronous structure.

[0018] Furthermore, a support plate is provided between the two mounting plates, and an arc-shaped groove is provided on the support plate.

[0019] By adopting the above technical solution, a support plate is also arranged between the mounting plates, and an arc-shaped groove is arranged on the support plate. The support plate can also support the patient's chin position, further preventing the patient's neck muscles from being continuously tense and fatigued during a long period of ophthalmic examination, and can relieve the pressure on the patient's cervical intervertebral disc.

[0020] Furthermore, a rubber pad is provided on the arc-shaped groove.

[0021] By adopting the above technical solution, a rubber pad is provided on the arc-shaped groove, which can disperse the pressure at the patient's chin position and improve the patient's comfort during the ophthalmic examination. The rubber pad is easy to replace and clean, which can reduce the risk of cross infection among patients.

[0022] Furthermore, an electric hydraulic rod is provided between the mounting plate and the base.

[0023] By adopting the above technical solution, an electric hydraulic rod is arranged between the mounting plate and the base, and the height of the ophthalmic examination auxiliary equipment can be controlled by the electric hydraulic rod, so that the height of the eye positioning structure is adjustable, which can be better used by people of different heights, and is convenient for patients to perform ophthalmic examinations in the best posture, which not only ensures the accuracy of the eye examination data, but also allows patients to have a more comfortable examination sitting posture.

[0024] Furthermore, an air cushion seat is provided on the surface of the arc-shaped seat.

[0025] By adopting the above technical solution, an air cushion seat is arranged on the surface of the arc seat, which can disperse the squeezing force of the arc seat on the patient's head and improve the patient's comfort during the eye examination. At the same time, the air cushion seat is easy to replace and clean, and the hygiene and safety of the equipment can be well maintained even when used by multiple people.

[0026] Compared with the prior art, the present invention has the following beneficial effects: The present invention can accurately locate the patient's eye position through the eye positioning structure, ensuring that the patient's line of sight is always within the inspection range. At the same time, the head fixing structure effectively avoids inspection errors caused by head shaking. The design of the synchronization structure enables the eye positioning structure and the head fixing structure to move synchronously. Even if the patient's head shakes slightly, the relative position of the eye protection cover and the head remains unchanged, thereby significantly improving the accuracy and reliability of ophthalmic examination data; The present invention can quickly adjust the distance between the arc seat and the patient's head through the double-headed screw sleeve and screw rod design in the head fixing structure, and is suitable for patients with different head sizes. In addition, the height of the device can be adjusted by an electric hydraulic rod to adapt to patients of different heights so that they can be examined in the best posture. Therefore, the device as a whole can adapt to patients of different age groups and facial features, thereby improving the versatility and applicability of the device. The present invention provides an air cushion seat on the surface of the arc seat and a rubber pad on the arc groove, which can effectively disperse the pressure on the head and chin, reduce the fatigue of the patient's neck and head during a long examination, and at the same time, the rubber pad and the air cushion seat are easy to replace and clean, reducing the risk of cross infection, and improving the patient's examination comfort and the hygienic safety of the equipment. The telescopic rod provided in the head fixing structure of the present invention can better support the patient's head and adapt to the change of the head position during the adjustment process, thereby further improving the stability of the head fixing structure. At the same time, the third screw and the fifth screw in the synchronous structure work together, and the helical gear drives the rotating rod to rotate in the same direction, so that the eye protection cover can be accurately driven to move synchronously with the patient's head, and the eye protection cover can remain stable even when the patient's head shakes slightly, thereby significantly improving the reliability and stability of the device. The invention can adjust the size of the head fixing structure by simply rotating the handle, and the design of the synchronous structure enables the eye positioning structure to automatically follow the movement of the head without additional operation, thereby reducing the preparation time before the examination and the cumbersome operation during the adjustment process, thereby significantly improving the overall efficiency of ophthalmic examinations, and is suitable for wide application in ophthalmic examinations; The present invention can support the patient's chin through the arc-shaped groove and rubber pad on the support plate, relieve the pressure on the cervical intervertebral disc, and further reduce the patient's discomfort. This humanized design not only improves the patient's examination experience, but also extends the use time of the equipment, reduces examination interruptions caused by patient discomfort, and further ensures the smooth progress of the examination. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the appearance of an ophthalmic examination auxiliary device provided by the present invention; Figure 2 is a top view of an ophthalmic examination auxiliary device provided by the present invention; Figure 3 It is a connection schematic diagram of the head fixing structure provided by the present invention; Figure 4 It is an exploded schematic diagram of the double-ended screw sleeve structure provided by the present invention; Figure 5 It is a connection diagram of the synchronization structure provided by the present invention; Figure 6It is a planar cross-sectional view of an ophthalmic examination auxiliary device provided by the present invention.

[0028] The reference numerals in the above drawings are: 1, base; 2, mounting plate; 3, eye positioning structure; 301, fixing rod; 302, eye protection cover; 4, head fixing structure; 401, first screw; 402, second screw; 403, double-headed screw sleeve; 404, handle; 405, arc seat; 406, telescopic rod; 5, synchronization structure; 501, third screw; 502, first sliding cylinder; 503, first coil spring; 504, helical gear Wheel one; 505, rotating rod one; 506, universal joint; 507, transmission rod; 508, rotating rod two; 509, bevel gear two; 510, fourth screw; 511, second sliding cylinder; 512, fifth screw; 513, third sliding cylinder; 514, second coil spring; 515, bevel gear three; 6, support plate; 7, arc groove; 8, rubber pad; 9, electric hydraulic rod; 10, air cushion seat; 11, inspection through hole; 12, fixing block. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0030] The implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0031] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0032] Reference Figure 1-6 The figure shows a preferred embodiment of the present invention.

[0033] An ophthalmic examination auxiliary device comprises a base 1, on which four electric hydraulic rods 9 are fixedly mounted, and the four electric hydraulic rods 9 are fixedly connected to two opposite mounting plates 2 on one side in pairs, respectively. The height of the ophthalmic examination auxiliary device can be controlled by the electric hydraulic rods 9, so that the height of an eye positioning structure 3 is adjustable, and can be better used by people of different heights. An eye positioning structure 3 is arranged between the two mounting plates 2, and the eye positioning structure 3 comprises two fixed rods 301 and an eye protection cover 302, one end of the two fixed rods 301 is fixedly connected to both sides of the eye protection cover 302, and the ends of the two fixed rods 301 away from the eye protection cover 302 are fixedly connected to the two mounting plates 2, respectively, and two inspection through holes 11 are symmetrically arranged on the eye protection cover 302, so that the eye protection cover 302 is located at the center of the entire eye positioning structure 3, and at the same time, the inspection through holes 11 correspond to the eye position of the patient, so that the eye position of the patient can be accurately located and the patient's line of sight can be ensured to be located within the structure.

[0034] A head fixing structure 4 is symmetrically connected to the eye positioning structure 3, and the head fixing structure 4 includes two first screws 401, a second screw 402, a double-headed screw sleeve 403, a handle sleeve 404 and an arc seat 405. The first screw 401 and the second screw 402 rotate in opposite directions, and the two ends of the double-headed screw sleeve 403 are threadedly connected to the first screw 401 and the second screw 402 respectively. The handle sleeve 404 is sleeved on the side wall of the double-headed screw sleeve 403, and the ends of the first screw 401 and the second screw 402 away from the double-headed screw sleeve 403 are respectively connected to the mounting plate 2 and the arc seat 405. By rotating the handle sleeve 404, the first screw 401 and the second screw 402 can be driven to approach or move away from each other, so that the distance between the arc seat 405 and the patient's head can be quickly adjusted, and at the same time, the device can be suitable for patients with different head sizes.

[0035] Preferably, the head fixing structure 4 of the present embodiment also includes two telescopic rods 406, the fixed ends of the two telescopic rods 406 are fixedly connected to the mounting plate 2, the telescopic ends of the two telescopic rods 406 are installed with fixing blocks 12, and the two telescopic rods 406 are symmetrically arranged on both sides of the double-headed screw sleeve 403, and the two ends of the double-headed screw sleeve 403 are respectively fixedly connected to the mounting plate 2 and the mounting block, so that when the handle sleeve 404 is used to adjust the distance between the arc seat 405 and the patient's head, the two telescopic rods 406 can also change their own length to adapt to the patient's head, and at the same time, the two telescopic rods 406 can support the patient's head, thereby further improving the stability of the head fixing structure 4.

[0036] In this embodiment, a synchronization structure 5 is installed between the head fixing structure 4 and the eye positioning structure 3, and the synchronization structure 5 includes a third screw 501, a first sliding cylinder 502, a first coil spring 503, a bevel gear 1 504, a rotating rod 1 505, two universal joints 506, a transmission rod 507, a rotating rod 2 508, a bevel gear 2 509, a fourth screw 510 and a second sliding cylinder 511; one end of the third screw 501 is connected to the arc seat 405, and the other end of the third screw 501 is slidably connected to the first sliding cylinder 502, the two ends of the first coil spring 503 are respectively connected to the third screw 501 and the first sliding cylinder 502 and are located in the first sliding cylinder 502, the end of the first sliding cylinder 502 away from the third screw 501 is connected to the mounting block, one end of the rotating rod 1 505 is fixedly connected to the bevel gear 1 504, one end of the rotating rod 2 508 is fixedly connected to the bevel gear 2 509, and both ends of the transmission rod 507 are connected to the universal joint 50 6 is connected to the rotating rod 1 505 and the rotating rod 2 508, one end of the fourth screw rod 510 is connected to the eye protection cover 302, the other end of the fourth screw rod 510 is slidably connected to the second sliding cylinder 511, the end of the second sliding cylinder 511 away from the fourth screw rod 510 is connected to the fixed rod 301, the bevel gear 1 504 is meshed with the third screw rod 501, and the bevel gear 2 509 is meshed with the fourth screw rod 510. When the third screw rod 501 is squeezed or pulled, the third screw rod 501 drives the rotating rod 1 505 to rotate through the bevel gear 1 504, the rotating rod 1 505 drives the rotating rod 2 508 to rotate by using the universal joint 506 and the transmission rod 507, and the rotating rod 2 508 drives the fourth screw 510 to rotate through the bevel gear 2 509, so as to achieve the purpose of controlling the eye protection cover 302 to always move synchronously with the patient's head, avoiding the deviation of the patient's eyes and the eye protection cover 302, and ensuring the authenticity of the patient's eye data during the ophthalmic examination.

[0037] Preferably, the synchronization structure 5 of this embodiment further includes a fifth screw rod 512, a third sliding cylinder 513, a second coil spring 514 and a bevel gear three 515; one end of the fifth screw rod 512 is connected to the arc seat 405, and the other end of the fifth screw rod 512 is slidably connected to the third sliding cylinder 513, and the two ends of the second coil spring 514 are respectively connected to the fifth screw rod 512 and the third sliding cylinder 513 and are located in the third sliding cylinder 513, and the end of the third sliding cylinder 513 away from the fifth screw rod 512 is fixedly connected to the mounting block, and the bevel gear three 515 has a thread rotation direction opposite to that of the bevel gear one 504, and the bevel gear three 515 is sleeved on the rotating rod one 505, and the bevel gear three 515 is meshed with the fifth screw rod 512. At this time, the fifth screw 512 simultaneously drives the rotating rod 1 505 to rotate through the bevel gear 3 515, thereby synchronously driving the eye protection cover 302 to move synchronously with the patient's head. Here, the thread rotation direction of the bevel gear 3 515 is opposite to that of the bevel gear 1 504. The third screw 501 and the fifth screw 512 can simultaneously use the bevel gear 1 504 and the bevel gear 3 515 to drive the rotating rod 1 505 to rotate in the same direction, so that a slight rotation of the patient's head can also accurately drive the eye protection cover 302 to move synchronously. At the same time, the third screw 501 and the fifth screw 512 work together to further improve the stability of the synchronization structure 5. The synchronization structure 5 is used to help the eye positioning structure 3 and the head fixing structure 4 move synchronously.

[0038] Preferably, in this embodiment, a support plate 6 is provided between the two mounting plates 2, and an arc-shaped groove 7 is provided on the support plate 6. The support plate 6 can also support the patient's chin position, further preventing the patient's neck muscles from being continuously tense and fatigued during a long period of ophthalmic examination, and can relieve the pressure on the patient's cervical intervertebral disc.

[0039] Preferably, in this embodiment, a rubber pad 8 is provided on the arc-shaped groove 7. The rubber pad 8 can disperse the pressure at the patient's chin position, while improving the patient's comfort during the ophthalmic examination. In addition, the rubber pad 8 is easy to replace and clean, which can reduce the risk of cross infection among patients.

[0040] Preferably, in this embodiment, an air cushion seat 10 is provided on the surface of the arc seat 405. The air cushion seat 10 can disperse the squeezing force of the arc seat 405 on the patient's head, thereby improving the patient's comfort during the eye examination. At the same time, the air cushion seat 10 is easy to replace and clean, and the hygiene and safety of the equipment can be well maintained even when used by multiple people.

[0041] Working principle: When using the ophthalmic examination auxiliary equipment, adjust the electric hydraulic rod 9 so that the height of the support plate 6 is the same as the height of the patient's chin, place the patient's chin on the rubber pad 8, turn the handle 404, and the handle 404 drives the double-headed screw sleeve 403 to rotate, so that the first screw rod 401 and the second screw rod 402 are screwed out of the double-headed screw sleeve 403, and at the same time the telescopic rod 406 is extended, so that the two air cushion seats 10 are close to both sides of the patient's head and support it. At this time, the patient's head is located in the middle of the support plate 6 and the eyes are aligned with the eye protection cover 302. At this time, the patient's head has been fixed to avoid the patient's eyes from being offset from the examination equipment, and the ophthalmic examination can be started. When the patient's head rotates due to discomfort or various reasons during the examination, the patient's head generates an extrusion force on the arc seats 405 on both sides. At this time, the arc seats 405 respectively drive the third screw rod 501 and the fifth screw rod 512 along the first sliding cylinder 502 and the third sliding cylinder 513 slide, and at the same time compress or stretch the first coil spring 503 and the second coil spring 514, thereby driving the rotating rod 1 505 to rotate, and the rotating rod 1 505 drives the rotating rod 2 508 to rotate through the universal joint 506 and the transmission rod 507, and at the same time drives the eye protection cover 302 to move synchronously with the patient's head, so that the eye positioning structure 3 always moves with the patient's head position, and its relative position does not change, thereby avoiding the deviation of the patient's eyes and the examination equipment, thereby ensuring the accuracy of the patient's eye examination data information. At the same time, the first coil spring 503 and the second coil spring 514 will also give the patient's head a directional force due to the elastic force generated, which can further ensure whether the patient's examination sitting posture is correct, and at the same time avoid the problem of continuous tension and fatigue of the patient's neck muscles and increased pressure on the patient's cervical intervertebral disc when the patient's head is completely fixed for a long time in traditional equipment.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An ophthalmic examination auxiliary device, characterized in that: The invention comprises a base (1), wherein two mounting plates (2) are arranged opposite to each other on the base (1), an eye positioning structure (3) is arranged between the two mounting plates (2), a head fixing structure (4) is symmetrically arranged on the eye positioning structure (3), a synchronization structure (5) is arranged between the head fixing structure (4) and the eye positioning structure (3), and the synchronization structure (5) is used to help the eye positioning structure (3) and the head fixing structure (4) to move synchronously.

2. An ophthalmic examination auxiliary device according to claim 1, characterized in that: The eye positioning structure (3) comprises two fixing rods (301) and an eye protection cover (302), one end of the two fixing rods (301) is fixedly connected to the eye protection cover (302), the ends of the two fixing rods (301) away from the eye protection cover (302) are respectively fixedly connected to two mounting plates (2), and the eye protection cover (302) is symmetrically provided with inspection through holes (11).

3. An ophthalmic examination auxiliary device according to claim 1, characterized in that: The head fixing structure (4) comprises two first screw rods (401), a second screw rod (402), a double-headed screw sleeve (403), a handle sleeve (404) and an arc-shaped seat (405); the first screw rod (401) and the second screw rod (402) rotate in opposite directions; two ends of the double-headed screw sleeve (403) are respectively threadedly connected to the first screw rod (401) and the second screw rod (402); the handle sleeve (404) is sleeved on the side wall of the double-headed screw sleeve (403); and the ends of the first screw rod (401) and the second screw rod (402) away from the double-headed screw sleeve (403) are respectively connected to the mounting plate (2) and the arc-shaped seat (405).

4. An ophthalmic examination auxiliary device according to claim 3, characterized in that: The head fixing structure (4) further comprises two telescopic rods (406), the two ends of the two telescopic rods (406) being fixedly connected to the mounting plate (2) and the arc-shaped seat (405) respectively, and the two telescopic rods (406) are symmetrically arranged on both sides of the double-headed screw sleeve (403).

5. The ophthalmic examination auxiliary device according to claim 1, characterized in that: The synchronous structure (5) comprises a third screw rod (501), a first sliding cylinder (502), a first coil spring (503), a bevel gear 1 (504), a rotating rod 1 (505), two universal joints (506), a transmission rod (507), a rotating rod 2 (508), a bevel gear 2 (509), a fourth screw rod (510) and a second sliding cylinder (511); one end of the third screw rod (501) is connected to the arc seat (405), and the other end of the third screw rod (501) is slidably connected to the first sliding cylinder (502); the two ends of the first coil spring (503) are respectively connected to the third screw rod (501) and the first sliding cylinder (502) and are located in the first sliding cylinder (502); the end of the first sliding cylinder (502) is away from the third screw rod (501). The first rotating rod (505) is connected to the second screw rod (402), one end of the rotating rod (505) is fixedly connected to the bevel gear (504), one end of the rotating rod (508) is fixedly connected to the bevel gear (509), both ends of the transmission rod (507) are connected to the rotating rod (505) and the rotating rod (508) through a universal joint (506), one end of the fourth screw rod (510) is connected to the eye protection cover (302), the other end of the fourth screw rod (510) is slidably connected to the second sliding cylinder (511), the end of the second sliding cylinder (511) away from the fourth screw rod (510) is connected to the fixed rod (301), the bevel gear (504) is meshed with the third screw rod (501), and the bevel gear (509) is meshed with the fourth screw rod (510).

6. An ophthalmic examination auxiliary device according to claim 5, characterized in that: The synchronization structure (5) also includes a fifth screw rod (512), a third sliding cylinder (513), a second coil spring (514) and a bevel gear three (515); one end of the fifth screw rod (512) is connected to the arc seat (405), and the other end of the fifth screw rod (512) is slidably connected to the third sliding cylinder (513); the two ends of the second coil spring (514) are respectively connected to the fifth screw rod (512) and the third sliding cylinder (513) and are located in the third sliding cylinder (513); the end of the third sliding cylinder (513) away from the fifth screw rod (512) is fixedly connected to the second screw rod (402); the thread rotation direction of the bevel gear three (515) is opposite to that of the bevel gear one (504); the bevel gear three (515) is sleeved on the rotating rod one (505), and the bevel gear three (515) is meshed with the fifth screw rod (512).

7. An ophthalmic examination auxiliary device according to claim 1, characterized in that: A support plate (6) is further provided between the two mounting plates (2), and an arc-shaped groove (7) is provided on the support plate (6).

8. An ophthalmic examination auxiliary device according to claim 8, characterized in that: A rubber pad (8) is provided on the arc-shaped groove (7).

9. An ophthalmic examination auxiliary device according to claim 1, characterized in that: An electric hydraulic rod (9) is provided between the mounting plate (2) and the base (1).

10. An ophthalmic examination auxiliary device according to claim 3, characterized in that: An air cushion seat (10) is provided on the surface of the arc-shaped seat (405).

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