A fixation training device

Abstract

The application discloses a kind of fixation training devices, including main body frame, head fixing dress, mounting plate, light source assembly, light shield and drive device, the front side of main body frame is plane, two light holes are provided on main body frame, and the front side and rear side are penetrated, and not communicated with each other;Head fixing device is set on main body frame, for wearing on head;Mounting plate is set on main body frame;Two light source assemblies have, two light source assemblies are set on mounting plate, and respectively with two light holes opposite;Light shield is set between the front side of main body frame and mounting plate, and can be respectively closed and shielded two light holes;Drive device is set on main body frame, and is connected with light shield, for the drive light shield to move back and forth between two light holes to be closed and shielded two light holes respectively.The fixation training device of the application can effectively assist patient to carry out left and right eye fixation training, and can reduce the labor intensity of trainer.

Description

TECHNICAL FIELD

[0001] The present application relates to a fixation training device, in particular to a fixation training device. BACKGROUND

[0002] In ophthalmic surgery such as myopia surgery, cataract surgery, full femtosecond laser surgery, etc., the eye needs to be kept still, and if the patient's eye movement frequency is too large, it will cause the surgery to be interrupted or directly terminated. Therefore, before the surgery, eye fixation training will be performed.

[0003] The existing method is that when performing fixation training, the patient needs to lie down or sit in a posture, keep the eyeball still, cover one eye with one hand, extend the index finger of the other hand to the same height as the unblocked eye, and fixate on the fingertip. Each eye fixates for 30 seconds (also 25 seconds, 40 seconds, 50 seconds, 60 seconds, etc.), and needs to avoid blinking throughout the process. The left and right eyes are alternately performed multiple times, but this training method has the following defects:

[0004] Because multiple times of practice are required every day, the patient needs to cover one eye with one hand and raise the index finger of the other hand during the practice process. For most patients, especially elderly patients, it is easy to cause fatigue during exercise, thereby causing the covered eye to be not tight enough. In addition, during the surgery, it is generally performed in a closed dark space, and the existing training device is generally trained in an open state, which has errors compared with the actual surgery situation, thereby resulting in poor training effect. SUMMARY

[0005] In view of the deficiencies of the prior art, the technical problem to be solved by the present application is to provide a fixation training device which can effectively assist patients in performing left and right eye fixation training and reduce the labor intensity of the trainer.

[0006] In order to achieve the above purpose, the present application is realized by the following technical scheme: a fixation training device, comprising:

[0007] A main body frame, the front side of the main body frame is a plane, the rear side of the main body frame is an arc surface that can cooperate with the face of the human body, two light transmission holes that penetrate the front side and the rear side and are not connected with each other are arranged on the main body frame, and the two light transmission holes can frame the left eye and the right eye, respectively;

[0008] A head fixing device arranged on the main body frame for wearing on the head;

[0009] An installation plate arranged on the main body frame and arranged in parallel with the front side of the main body frame and covering the front side of the main body frame;

[0010] The light-emitting source assembly is provided on the mounting plate and is opposite to the two light transmission holes respectively;

[0011] The light shielding piece is arranged between the front side of the main frame and the mounting plate and can seal and shield the two light transmission holes respectively;

[0012] The driving device is arranged on the main frame and is connected with the light shielding piece, and is used for driving the light shielding piece to move back and forth between the two light transmission holes to seal and shield the two light transmission holes respectively.

[0013] Further, two guide grooves are arranged on the front side of the main frame along the height direction of the main frame, and the upper and lower ends of the light shielding piece are respectively provided with sliding blocks, and the two sliding blocks are slidably arranged in the guide grooves.

[0014] Further, the driving device comprises a rotary driving source and a screw rod, the rotary driving source is arranged on the main frame, the screw rod is horizontally arranged between the front side of the main frame and the mounting plate and is connected with the power output shaft of the rotary driving source, and extends from one light transmission hole to the other light transmission hole, the rotary driving source can intermittently drive the screw rod to rotate clockwise and counterclockwise, and the light shielding piece is threadedly connected with the screw rod.

[0015] Further, the rotary driving source comprises a rotary motor, two rotary wheels, a belt, a strip-shaped tooth, a first gear, a second gear, a third gear, a fourth gear, a fifth gear and a transmission gear, the rotary motor is arranged on the main frame, the two rotary wheels are rotatably arranged on the main frame along the height direction of the main frame and are oppositely located on the upper and lower sides of the screw rod, one of the rotary wheels is connected with the power output shaft of the rotary motor, the belt is sleeved between the two rotary wheels, the length of the strip-shaped tooth is less than the center distance of the two rotary wheels, the strip-shaped tooth is arranged on the outer side of the belt, the first gear and the third gear are arranged on the two sides of the belt along the thickness direction of the main frame and can be engaged with the strip-shaped tooth, the second gear is coaxially arranged on the first gear, the fourth gear is coaxially arranged on the third gear, the fifth gear is rotatably arranged on the main frame and is engaged with the fourth gear, and the transmission gear is rotatably arranged on the end of the screw rod and is engaged with the second gear and the fifth gear.

[0016] Further, the number of teeth of the second gear is less than the number of teeth of the first gear, and the number of teeth of the fifth gear is less than the number of teeth of the third gear.

[0017] Further, the number of teeth of the transmission gear is less than the number of teeth of the second gear and the number of teeth of the fifth gear.

[0018] Further, the inner wall of the light hole is circumferentially provided with a sealing ring, and the top of the sealing ring is sealed and slidably abuts against the light shield.

[0019] Further, the rear side of the main frame is provided with a soft pad.

[0020] Further, the head fixing device comprises elastic arc-shaped rods and connecting bands, the two arc-shaped rods are oppositely arranged at the two ends of the main frame, the connecting bands are arranged at the ends of the arc-shaped rods away from the main frame, and the two connecting bands can be connected to each other.

[0021] Further, the connecting bands are Velcro bands.

[0022] The beneficial effects of the present application are as follows:

[0023] In use of the above fixation training device, the whole device is matched on the head through the head fixing device, and the two light holes are respectively framed on the left and right eyes, then the two light source assemblies are started, the patient's eyesight is fixed on the two light source assemblies, then the driving device is started, and the driving light shield of the driving device moves back and forth between the two light holes to respectively close and shield the two light holes. When the left eye is shielded by the light shield, the right eye is trained, and after a certain time (such as 30 seconds), the driving device drives the light shield to shield the right light hole, and then the fixation training of the left eye can be performed.

[0024] The device can be used in a dark and closed space, which meets the real environment during operation, and through the cooperation of the driving device and the light shield, the left and right eyes can be automatically trained in turn, which can ensure the training effect and reduce the labor intensity of the patient. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the specific embodiments of the present application, the drawings needed in the specific embodiments will be briefly introduced below. In all the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0026] Figure 1 A schematic view of a fixation training device provided by an embodiment of the present application;

[0027] Figure 2 A schematic view of a fixation training device provided by an embodiment of the present application; Figure 1 A schematic view of a fixation training device provided by an embodiment of the present application;

[0028] Figure 3 A schematic view of a fixation training device provided by an embodiment of the present application; Figure 1A schematic view of a light source assembly mounted on a mounting plate in a fixation training device shown in the figure;

[0029] Figure 4 For Figure 1 A schematic view of the front side of the main frame after removing the mounting plate in a fixation training device shown in the figure;

[0030] Figure 5 For Figure 2 A partial schematic view at A in the figure;

[0031] Reference signs:

[0032] 100, main frame; 110, front side; 120, rear side; 130, light hole; 140, guide groove; 150, sealing ring; 200, head fixing device; 300, mounting plate; 400, light source assembly; 500, light shield; 600, driving device; 610, screw rod; 620, rotary driving source; 6201, rotary motor; 6202, rotary wheel; 6203, belt; 6204, strip-shaped tooth; 6205, first gear; 6206, second gear; 6207, third gear; 6208, fourth gear; 6209, fifth gear; 6210, transmission gear. DETAILED DESCRIPTION

[0033] The embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0034] Please refer to Figures 1 to 5 The present application provides a fixation training device, which comprises a main frame 100, a head fixing device 200, a mounting plate 300, a light source assembly 400, a light shield 500 and a driving device 600, and is used for fixation training.

[0035] Specifically, the front side 110 of the main frame 100 is a plane, the rear side 120 of the main frame 100 is an arc-shaped surface capable of cooperating with the face of a human body, the main frame 100 is provided with two light holes 130 which penetrate the front side 110 and the rear side 120 and are not in communication with each other, and the two light holes 130 can frame the left eye and the right eye respectively.

[0036] The head fixing device 200 is arranged on the main frame 100 and is used for wearing on the head. The mounting plate 300 is arranged on the main frame 100 and is arranged in parallel with the front side 110 of the main frame 100 with a spacing and covers the front side 110 of the main frame 100. The light source assemblies 400 are two in number and are arranged on the mounting plate 300 and respectively face the two light transmission holes 130. In the specific implementation, the light source assemblies 400 can be the light source commonly used in the prior art for fixation training.

[0037] The light shielding sheet 500 is arranged between the front side 110 of the main frame 100 and the mounting plate 300 and can respectively seal and shield the two light transmission holes 130. The driving device 600 is arranged on the main frame 100 and is connected with the light shielding sheet 500 and is used for driving the light shielding sheet 500 to move back and forth between the two light transmission holes 130 to respectively seal and shield the two light transmission holes 130. In the specific implementation, the time interval can be set according to the requirement, such as 20 seconds, 30 seconds, 45 seconds, 1 minute, etc.

[0038] In use, the whole device is first matched on the head through the head fixing device 200 and the two light transmission holes 130 are respectively framed on the left and right eyes, then the two light source assemblies 400 are started, the patient's eyesight is fixed on the two light source assemblies 400, then the driving device 600 is started, the driving device 600 drives the light shielding sheet 500 to move back and forth between the two light transmission holes 130 to respectively seal and shield the two light transmission holes 130. When the left eye is shielded by the light shielding sheet 500, the right eye is trained, after a certain time (such as 30 seconds), the driving device 600 drives the light shielding sheet 500 to shield the right light transmission hole 130, then the fixation training of the left eye can be performed.

[0039] The device can be used in a dark and sealed space, which conforms to the real environment during the operation. Meanwhile, through the cooperation of the driving device 600 and the light shielding sheet 500, the left and right eyes can be automatically trained in turn, which can ensure the training effect and reduce the labor intensity of the patient.

[0040] In the specific implementation, two guide grooves 140 can be arranged on the front side 110 of the main frame 100 along the height direction of the main frame 100, the upper and lower ends of the light shielding sheet 500 are respectively provided with sliding blocks, and the two sliding blocks are respectively slidably clamped in the guide grooves 140. Through the guidance of the guide grooves 140, the running stability of the light shielding sheet 500 can be improved.

[0041] In the embodiment, the driving device 600 comprises a rotary driving source 620 and a screw rod 610, the rotary driving source 620 is arranged on the main body frame 100, the screw rod 610 is horizontally arranged between the front side 110 of the main body frame 100 and the mounting plate 300, and is connected with a power output shaft of the rotary driving source 620, and extends from one light passing hole 130 to another light passing hole 130, the rotary driving source 620 can gap drive the screw rod 610 to rotate clockwise and counterclockwise, and the sunshade 500 is threadedly connected with the screw rod 610.

[0042] Specifically, the rotary driving source 620 comprises a rotary motor 6201, rotary wheels 6202, a belt 6203, a strip-shaped tooth 6204, a first gear 6205, a second gear 6206, a third gear 6207, a fourth gear 6208, a fifth gear 6209 and a transmission gear 6210. The rotary motor 6201 is arranged on the main body frame 100. The rotary wheels 6202 are two, and the two rotary wheels 6202 are arranged on the main body frame 100 along the height direction of the main body frame 100 and oppositely located on the upper and lower sides of the screw rod 610, and one of the rotary wheels 6202 is connected with a power output shaft of the rotary motor 6201. The belt 6203 is sleeved between the two rotary wheels 6202. The length of the strip-shaped tooth 6204 is less than the center distance of the two rotary wheels 6202, and the strip-shaped tooth 6204 is arranged on the outside of the belt 6203. The first gear 6205 and the third gear 6207 are arranged on the two sides of the belt 6203 along the thickness direction of the main body frame 100, and can be engaged with the strip-shaped tooth 6204, the second gear 6206 is coaxially arranged on the first gear 6205, the fourth gear 6208 is coaxially arranged on the third gear 6207, the fifth gear 6209 is rotatably arranged on the main body frame 100 and engaged with the fourth gear 6208, and the transmission gear 6210 is rotatably arranged on the end of the screw rod 610 and engaged with the second gear 6206 and the fifth gear 6209.

[0043] It should be noted that in the specific implementation, the length of the strip-shaped tooth 6204 should be just enough to drive the sunshade 500 to move from one light passing hole 130 to another light passing hole 130.

[0044] Use makes, in the initial state, the light-shielding piece 500 is in the middle of two light holes 130, at this time the strip-shaped tooth 6204 is located in the middle of two first gears 6205, when starting the rotary motor 6201, the rotary motor 6201 drives the belt 6203 and the strip-shaped tooth 6204 to move, when the strip-shaped tooth 6204 meshes with the first gear 6205, the first gear 6205 can be driven to rotate, the first gear 6205 drives the transmission gear 6209 to rotate clockwise through the second gear 6206, so that the screw rod 610 can be driven to rotate clockwise, when the screw rod 610 rotates, the light-shielding piece 500 is driven to move to one light hole 130, until the light hole 130 is completely covered, when the light hole 130 is completely covered, the strip-shaped tooth 6204 is disengaged from the first gear 6205, the screw rod 610 stops rotating, and the light-shielding piece 500 stops moving;

[0045] With the continuous rotation of the rotary motor 6201, when the strip-shaped tooth 6204 continues to advance and meshes with the third gear 6207, through the fixed fourth gear 6208 and the fifth gear 6209 with the fourth gear 6208, the fifth gear 6209 meshes with the transmission gear 6210, so that the transmission gear 6210 can be driven to rotate counterclockwise, so that the screw rod 610 can be driven to rotate counterclockwise, driving the light-shielding piece 500 to move reversely to the next light hole 130.

[0046] In specific implementation, the rotation speed of the rotary motor 6201 can be adjusted, or the number of teeth of the strip-shaped tooth 6204, the first gear 6205, the second gear 6206, the third gear 6207, the fourth gear 6208, the fifth gear 6209 and the transmission gear 6210 can be controlled, so that the light-shielding piece 500 covers each light hole 130 for 20 seconds, 30 seconds, 45 seconds, 1 minute, etc.

[0047] As an effective implementation, the number of teeth of the second gear 6206 can be less than the number of teeth of the first gear 6205, and the number of teeth of the fifth gear 6209 can be less than the number of teeth of the third gear 6207, so that the speed of the screw rod 610 can be accelerated, as a more preferred implementation, the number of teeth of the transmission gear 6210 can be less than the number of teeth of the second gear 6206 and less than the number of teeth of the fifth gear 6209, so that the speed of the screw rod 610 can be further accelerated, thereby reducing the moving time of the light-shielding piece between two light holes 130.

[0048] Through this design, the left and right eyes can be conveniently fixed for vision training, and the monocular fixed vision training time can be conveniently adjusted, so that the use is more convenient and flexible.

[0049] In the embodiment, the sealing ring 150 is arranged on the inner wall of the light hole 130 in the circumferential direction, and the top of the sealing ring 150 is sealed and slidably abuts against the light shield 500. The sealing ring 150 can prevent light leakage. Further, the soft pad is arranged on the rear side 120 of the main frame 100. The soft pad can improve the comfort of contacting the human face, and can also prevent light leakage.

[0050] In the embodiment, the head fixing device 200 includes elastic arc-shaped rods and connecting bands. The elastic arc-shaped rods are used to facilitate wearing the entire device on the head. The arc-shaped rods are two, and the two arc-shaped rods are oppositely arranged at the two ends of the main frame 100. The ends of the two arc-shaped rods away from the main frame 100 are provided with connecting bands, and the two connecting bands can be connected to each other. The connecting band is a Velcro band. In the specific implementation, the connecting band is a Velcro band. Through the Velcro band, the entire head fixing device 200 can be conveniently fixed on the head.

[0051] The use mode of the above fixation training device is as follows:

[0052] With the device, the training can be performed in a dark and closed space. Through the cooperation of the driving device 600 and the light shield 500, the left and right eyes can be automatically trained in turn, which can ensure the training effect and reduce the labor intensity of the patient. In addition, the single-eye fixation visual training time can be conveniently adjusted, and the use is more convenient and flexible.

[0053] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit the same. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some or all of the technical features can be replaced by equivalents. The modifications or replacements do not change the essence of the corresponding technical solutions out of the scope of the technical solutions of the embodiments of the present application, and should be covered in the scope of the claims and the specification of the present application.

Claims

1. A fixation training device, characterized by, The utility model provides a kind of head-mounted display, including: Main frame, the front side of the main frame is plane, the rear side of the main frame is the arc surface that can cooperate with human face, two light holes that the front side and rear side of the main frame are passed through and are not communicated with each other are provided on the main frame, and two light holes can be respectively set with left eye and right eye frame; Head fixing device, it is provided on the main frame, for wearing on head; Mounting plate, it is provided on the main frame, and it is parallelly arranged with the front side of the main frame and covers the front side of the main frame; Light source assembly, two, two light source assembly is provided on the mounting plate, and respectively with two light holes opposite; Shading piece, it is provided between the front side of the main frame and the mounting plate, and can be respectively closed two light holes; Driving device, it is provided on the main frame, and is connected with the shading piece, for gap driving the shading piece moves back and forth between two light holes to close two light holes respectively; The driving device includes rotary drive source and screw rod, the rotary drive source is provided on the main frame, the screw rod is horizontally provided between the front side of the main frame and the mounting plate, and is connected with the power output shaft of the rotary drive source, and from one light hole extends straight another light hole, the rotary drive source can gap drive the screw rod clockwise rotation and counterclockwise rotation, the shading piece is connected with the screw rod threadedly; The rotary drive source includes rotary motor, rotating wheel, belt, strip tooth, first gear, second gear, third gear, fourth gear, fifth gear and transmission gear, the rotary motor is provided on the main frame, the rotating wheel has two, two rotating wheel is respectively rotatable along the height direction of the main frame and is oppositely located on the upper and lower sides of the screw rod, wherein one rotating wheel is connected with the power output shaft of the rotary motor, the belt is sleeved between two rotating wheels, the length of the strip tooth is less than the center axis distance of two rotating wheels, the strip tooth is provided on the outside of the belt, the first gear and third gear are spaced apart and provided on the two sides of the belt along the thickness direction of the main frame, and can be engaged with the strip tooth, the second gear is coaxially provided on the first gear, the fourth gear is coaxially provided on the third gear, the fifth gear is rotatably provided on the main frame and is engaged with the fourth gear, the transmission gear is rotatably provided on the end of the screw rod, and is engaged with the second gear and the fifth gear simultaneously.

2. The fixation training device of claim 1, wherein Two guide grooves are provided on the front side of the main frame along the height direction of the main frame, and the upper and lower ends of the shading piece are respectively provided with sliding blocks, two sliding blocks are respectively slidably clamped in the guide grooves.

3. The fixation training device of claim 1, wherein The number of teeth of the second gear is less than the number of teeth of the first gear, and the number of teeth of the fifth gear is less than the number of teeth of the third gear.

4. The fixation training device of claim 1, wherein The number of teeth of the transmission gear is less than the number of teeth of the second gear and the number of teeth of the fifth gear.

5. The fixation training device of claim 1, wherein The inner wall of the light hole is circumferentially provided with a sealing ring, and the top of the sealing ring is sealed and slidably abuts against the light shield.

6. The fixation training device of claim 1, wherein A soft pad is arranged on the rear side of the main frame.

7. The fixation training device of claim 1, wherein The head fixing device comprises elastic arc-shaped rods and connecting bands, the arc-shaped rods are two, the two arc-shaped rods are oppositely arranged at the two ends of the main frame, the end of each of the two arc-shaped rods away from the main frame is provided with the connecting band, and the two connecting bands can be connected with each other.

8. The fixation training device of claim 7, wherein The connecting band is a Velcro band.

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