Post-operation light chopper for ophthalmologic laser operation

Abstract

The invention belongs to the technical field of ophthalmologic postoperative rehabilitation instruments, and discloses an ophthalmologic laser postoperative light chopper which comprises two light shading devices, the light shading devices are connected with nose pads and a head band, each light shading device comprises a base frame, the base frame is connected with a lead screw, a first lens frame and a second lens frame, and the lead screw is connected with a driven bevel gear and a pair of linkage blocks. The nose pad is connected with a driving bevel gear, and the driving bevel gear is connected with a spacing knob; anti-dazzling screens are clamped to the base frame, the first lens frame and the second lens frame, the first lens frame and the second lens frame are connected with an outer spline shaft and a connecting shaft, and the outer spline shaft is connected with an angle knob through a spring. The shading sheets are connected to the base frame, the first lens frame and the second lens frame, the shading effect is adjusted by adjusting the distance between the first lens frame and the base frame and the distance between the first lens frame and the second lens frame and adjusting the angle of the first lens frame and the second lens frame relative to the base frame, and the use effect is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of ophthalmic post-operative rehabilitation equipment, in particular to an ophthalmic laser post-operative shutter. Background Art

[0002] Laser ophthalmic surgery is a type of laser surgery to correct vision. It includes six development stages: laser optical keratectomy, excimer laser in situ keratomileusis, excimer laser subepithelial keratomileusis, wavefront aberration-guided excimer laser surgery, femtosecond, and all-femtosecond laser. However, ophthalmic surgery will inevitably cause trauma to the eyes. Therefore, the eyes need to be well protected during the recovery period after laser surgery. During the day, dust and other debris should be prevented from entering the eyes, and strong light should be prevented from irritating the eyes; at night, patients should be prevented from rubbing their eyes unconsciously, and collisions and squeezing of the eyes should be prevented.

[0003] Currently, after laser ophthalmic surgery, medical staff will ask patients to prepare sunglasses to wear after the operation. However, the degree of light blocking of sunglasses is limited, and the light blocking effect of the lenses cannot be adjusted according to the postoperative recovery status or length of time or changes in usage scenarios, which affects the user experience. Summary of the invention

[0004] The present invention is intended to provide a postoperative shading device for ophthalmic laser surgery, wherein a shading sheet is connected to a base frame, a first lens frame, and a second lens frame, and by adjusting the distance between the first lens frame, the second lens frame, and the base frame, and between the first lens frame and the second lens frame, the shading effect of the shading sheet can be adjusted according to the patient's postoperative recovery state or length of time or changes in the use scene, so as to ensure the use effect. The problem in the background technology is solved.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A postoperative shading device for ophthalmic laser surgery comprises a shading device, wherein the shading device comprises a base frame, wherein the base frame is rotatably connected to a lead screw, wherein the lead screw is coaxially fixedly connected to a driven bevel gear, wherein the driven bevel gear meshes with an active bevel gear, wherein the active bevel gear is coaxially fixedly connected to a spacing knob arranged on the outside of the base frame; wherein the lead screw is connected to a pair of linkage blocks via threads with opposite rotation directions, wherein the pair of linkage blocks are both slidably connected to the base frame, and when the lead screw rotates, the pair of linkage blocks move linearly toward each other along the axial direction of the lead screw; wherein the inner side of the base frame is slidably connected to a first lens frame and a second lens frame, The base frame, the first frame and the second frame are all detachably connected with shading sheets, the left and right sides of the first frame and the second frame are respectively connected with external spline shafts and connecting shafts, the base frame is provided with a through slot on the side away from the lead screw, the external spline shaft is rolled through the through slot for adjusting the angle of the frame, the connecting shaft is rotatably connected with the linkage block to adjust the distance between the base frame and / or the first frame and / or the second frame; there are two shading devices, a nose pad is connected between the base frames of the two shading devices, and headbands are connected to the sides of the base frames of the two shading devices away from each other.

[0007] Furthermore, the external spline shaft is provided with an external spline portion on the outer side of the base frame, the outer end face of the external spline shaft is connected with a spring, the free end of the spring is connected with an angle knob, the angle knob is provided with a blank portion and an internal spline portion cooperating with the external spline portion, and the length of the blank portion is not shorter than the length of the external spline portion.

[0008] Furthermore, the active bevel gear is rotatably connected to the inner side of the nose pad, the spacing knob is rotatably connected to the outer side of the nose pad, and the spacing knob is vertically arranged; the angle knob is arranged on the side away from the nose pad, and the angle knob is horizontally arranged.

[0009] Furthermore, the connecting shaft is a rotating shaft with damping, and both ends of the connecting shaft are respectively connected to the linkage block and the mirror frame.

[0010] Furthermore, grooves are provided on the upper and lower inner sides of the base frame, and balls are connected to the upper and lower sides of the first lens frame and the second lens frame, and the balls are rolled on the inner sides of the grooves.

[0011] Furthermore, the two shading devices are divided into a left-eye shading device and a right-eye shading device, and the left-eye shading device and the right-eye shading device are independent of each other.

[0012] Furthermore, the shading sheet is a photochromic lens.

[0013] Furthermore, the headband is an elastic band.

[0014] Furthermore, the edges of the base frame and the nose pad are coated with rubber.

[0015] The beneficial effects of the technical solution are:

[0016] 1. A postoperative shading device for ophthalmic laser surgery provided by the present invention is provided with two shading devices, which are used for protecting and shading the patient's two eyes respectively. A nose pad is connected between the two shading devices, and the sides of the two shading devices that are away from each other are connected to a headband, so as to facilitate the fixation of the shading device to the patient's head and eyes, and to facilitate use; a lead screw is connected in a base frame of the shading device, the lead screw is fixedly connected to a driven bevel gear, a spacing knob is fixedly connected to an active bevel gear meshing with the driven bevel gear, the lead screw is connected to a pair of linkage blocks through threads with opposite rotation directions, and the pair of linkage blocks The first and second mirror frames are slidably connected to the base frame. When the spacing knob is turned, the lead screw rotates under the action of the bevel gear set (the active bevel gear and the driven bevel gear), and a pair of linkage blocks move toward each other (away from each other, closer to each other) along the axial direction of the lead screw under the action of the thread and the base frame; the first mirror frame and the second mirror frame are slid inside the base frame, and the shading sheet is detachably connected to the base frame, the first mirror frame and the second mirror frame. The mirror frame is rotatably connected to the linkage block through the connecting shaft. When the spacing knob is turned to make the linkage block move along the axial direction of the lead screw, the first mirror frame and the second mirror frame will be driven to move relative to each other. The distance between the shading sheets is adjusted by moving them in the opposite direction (away from each other, closer to each other). The shading sheets mainly reduce or control the propagation of light by blocking the light. The effect mainly depends on the physical properties of the shading sheets (such as thickness, material) and the distance between the shading sheets and the light source. Therefore, when the shading sheets are closer to the light source, the range of light blocked is larger and the light intensity is more obviously weakened; when the shading sheets are farther away from the light source, the range of light blocked is reduced and the degree of light intensity reduction is reduced, thereby achieving the adjustment of the shading effect. In addition, the frame An external spline shaft is also connected, and the external spline shaft rolls through a through groove opened in the base frame. By rotating the angle of the external spline shaft, the angle of the mirror frame relative to the base frame is changed, thereby adjusting the angle of the shading plate. When adjusting the angle of the shading plate, the transmission path of the light through the shading plate will change, affecting the scattering and focusing effects of the light. That is, the shading plate adjusts its position by rotating, thereby changing the reflection and refraction path of the light inside the shading plate, ultimately achieving the purpose of adjusting the intensity and distribution of the light and realizing the adjustment of the shading effect.

[0017] 2. The present invention provides a postoperative sunshade for ophthalmic laser surgery, in which an external spline portion is arranged on an external spline shaft, and a blank portion and an internal spline portion are arranged on an angle knob, and the external spline shaft and the angle knob are connected by a spring, so that when no pressing force is applied to the angle knob, the external spline portion is arranged in the blank portion, and the angle knob can be rotated at will, but cannot drive the external spline shaft to rotate, and the angle of the frame will not rotate with the rotation of the angle knob, thereby avoiding misoperation and improving the fault tolerance during operation; when pressing force is applied to the angle knob, the external spline portion and the internal spline portion are meshed with each other, and rotating the angle knob drives the external spline shaft to rotate, so that the angle of the frame rotates with the rotation of the angle knob, thereby realizing the adjustment of the angle of the frame / shading plate, and the operation is convenient and the adjustment of the angle of the frame / shading plate is intuitive.

[0018] 3. The present invention provides a post-operative sunshade for ophthalmic laser surgery, wherein the active bevel gear and the spacing knob are vertically arranged on one side of the nose pad, and the angle knob is horizontally arranged on the side away from the nose pad, so that the patient can adjust the shading effect by himself. The spacing knob is rotated in the left-right direction to adjust the distance between the frame / shading sheet, and the angle knob is rotated in the front-back direction to adjust the angle of the frame / shading sheet. The operation method / process is logically consistent with the movement form of the frame / shading sheet, which is beneficial for the patient to understand, learn and adapt to the use of the sunshade and is more easily accepted by the patient. The connecting shaft is a damped rotating shaft, which can withstand both bending moment and torque during rotation. After the angle knob is rotated to adjust the angle of the frame / shading sheet, the frame / shading sheet The state of the lens remains unchanged without other locking or fixing operations, which improves the convenience of operation, and its structure is stable and the function is reliable; a groove is opened on the inner side of the base frame, and the upper and lower sides of the frame are connected to the balls, and the balls are rolled on the inner side of the groove, and the balls and the groove guide and limit the relative movement of the two (frame and base frame), ensuring the uniformity, stability and accuracy of the frame movement during the adjustment of the frame spacing; the two shading devices (left eye shading device and right eye shading device) are independent of each other, so that the shading effect can be adjusted according to the specific conditions of each eye of the patient (whether laser surgery has been performed, the time of laser surgery, the state or speed of postoperative recovery, etc.), further expanding the scope of application of the entire shading device.

[0019] 4. The present invention provides a postoperative sunshade for ophthalmic laser surgery. The sunshade is made of photochromic lenses. Based on the principle of reversible photochromic reaction, it will quickly darken under sunlight and ultraviolet rays, block strong light and absorb ultraviolet rays, and can quickly restore to a colorless and transparent state when returned to a dark place, thereby ensuring the light transmittance of the lens, effectively protecting the eyes of patients after surgery, and having better adaptability; the headband is made of elastic band, which is beneficial to improving the stability of wearing the sunshade and expanding the scope of application; the edges of the base frame and the nose pads are coated with rubber, which can effectively improve the comfort during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of a postoperative shutter for ophthalmic laser surgery according to the present invention;

[0021] Figure 2 It is a front view of a postoperative shutter for ophthalmic laser surgery according to the present invention;

[0022] Figure 3 for Figure 2 Sectional view of AA in the middle;

[0023] Figure 4 for Figure 2 Cross-sectional view of the middle BB;

[0024] Figure 5 for Figure 4 A partial enlarged view of point C in the middle;

[0025] Figure 6 for Figure 4 A magnified partial view of point D in the middle.

[0026] The names of the corresponding marks in the accompanying drawings are:

[0027] Base frame 1, headband 2, nose pad 3, lead screw 4, driven bevel gear 5, driving bevel gear 6, spacing knob 7, linkage block 8, first lens frame 9, second lens frame 10, groove 11, rolling ball 12, connecting shaft 13, through groove 14, external spline shaft 15, external spline part 16, angle knob 17, spring 18, internal spline part 19, blank part 20. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments:

[0029] like Figures 1 to 6 As shown, a postoperative shutter for ophthalmic laser surgery includes two shutter devices, which are divided into a left eye shutter and a right eye shutter that are independent of each other, the left eye shutter and the right eye shutter are connected by a nose pad 3, and the left eye shutter and the right eye shutter are mirror-symmetrically arranged with the vertical center plane of the nose pad 3 as a reference plane, and the left side of the left eye shutter and the right side of the right eye shutter are connected to a headband 2, and the headband 2 is an elastic band;

[0030] The shading device includes a base frame 1, the edges of the base frame 1 and the nose pad 3 are coated with rubber, the base frame 1 is rotatably connected to a lead screw 4, the lead screw 4 is coaxially fixedly connected to a driven bevel gear 5, the inner side of the nose pad 3 is rotatably connected to an active bevel gear 6 meshing with the driven bevel gear 5, the active bevel gear 6 is coaxially fixedly connected to a spacing knob 7 vertically arranged on the outer side of the nose pad 3; the lead screw 4 is connected to a pair of linkage blocks 8 through threads with opposite rotation directions, the pair of linkage blocks 8 are both slidably connected to the base frame 1, and when the lead screw 4 rotates, the pair of linkage blocks 8 move linearly toward each other along the axial direction of the lead screw 4;

[0031] Two grooves 11 are provided on the upper and lower inner sides of the base frame 1, and the first frame 9 and the second frame 10 are slidably connected between the grooves 11 provided on the upper and lower inner sides of the base frame 1. The upper and lower sides of the first frame 9 and the second frame 10 are connected with balls 12, and the balls 12 are rolled on the inner sides of the grooves 11. The base frame 1, the first frame 9 and the second frame 10 are all connected with shading sheets, and the shading sheets are color-changing lenses. The left and right sides of the first frame 9 and the second frame 10 are respectively connected with external spline shafts 15 and connecting shafts 13. The base frame 1 is provided with a horizontal through groove 14 on the side away from the screw 4, and the external spline shaft 15 rolls through the through grooves 14. A through groove 14 is provided to adjust the angle of the mirror frame. An external spline shaft 15 is provided with an external spline portion 16 on the outer side of the base frame 1. A spring 18 is connected to the outer end face of the external spline shaft 15. A horizontally arranged angle knob 17 is connected to the free end of the spring 18. The angle knob 17 is provided with a blank portion 20 and an internal spline portion 19 matched with the external spline portion 16, and the length of the blank portion 20 is not shorter than the length of the external spline portion 16. The connecting shaft 13 is a damped rotating shaft, and both ends of the connecting shaft 13 are respectively connected to the linkage block 8 and the mirror frame to adjust the distance between the base frame 1 and / or the first mirror frame 9 and / or the second mirror frame 10.

[0032] The specific implementation process is as follows:

[0033] When using the sunshade, the entire sunshade is worn on the head using the headband 2, the nose pad 3 is arranged on the upper side of the nose bridge, and the two eyes are respectively in the same straight line with the base frame 1, the first frame 9 and the second frame 10 of the two sunshade devices; as the postoperative recovery state or the length of time or the change of the use scene, when it is necessary to adjust the sunshade effect, the spacing knob 7 or the angle knob 17 is turned to adjust the sunshade effect; wherein, the spacing knob 7 adjusts the distance between the sunshades by adjusting the distance between the first frame 9, the second frame 10 and the base frame 1, and between the first frame 9 and the second frame 10 to adjust the distance between the sunshades to adjust the sunshade effect; the angle knob 17 adjusts the angle between the first frame 9, the second frame 10 and the base frame 1 to adjust the angle between the sunshades to adjust the sunshade effect; the left eye sunshade and the right eye sunshade are independent of each other, and their respective sunshade effects are adjusted by the same adjustment method.

[0034] Among them, the shading sheet uses a photochromic lens, which will quickly darken under sunlight and ultraviolet rays, blocking strong light and absorbing ultraviolet rays. It can quickly return to a colorless and transparent state when returning to a dark place, ensuring the light transmittance of the lens, which can effectively protect the eyes of postoperative patients and has good adaptability; the headband 2 uses an elastic band, which is beneficial to improving the stability of wearing the shading device and expanding the scope of application; the edges of the base frame 1 and the nose pad 3 are coated with rubber to improve the comfort during use;

[0035] The spacing knob 7 is vertically arranged on one side of the nose pad 3, and the angle knob 17 is horizontally arranged on the side away from the nose pad 3, which is convenient for the patient to adjust the shading effect by himself, and the operation method / process of adjusting the distance and / or angle of the frame / shading sheet is logically consistent with the movement form of the frame / shading sheet, so that the patient can understand, learn and adapt to the shading device quickly, and it is easy for the patient to accept it; the connecting shaft 13 is a damped rotating shaft, and after the angle knob 17 is turned to adjust the angle of the frame / shading sheet, the state of the frame / shading sheet remains unchanged without other locking or fixing operations, the operation is convenient, and the structure is stable and the function is reliable; a groove 11 is provided on the inner side of the base frame 1, and a ball 12 is connected to the upper and lower sides of the frame, and the ball 12 and the groove 11 guide and limit the relative movement of the two (frame and base frame 1), so as to ensure the uniformity, stability and accuracy of the frame movement;

[0036] An external spline portion 16 is arranged on the external spline shaft 15, and a blank portion 20 and an internal spline portion 19 are arranged on the angle knob 17. The external spline shaft 15 and the angle knob 17 are connected by a spring 18, so that when no pressing force is applied to the angle knob 17, the external spline portion 16 is arranged in the blank portion 20, and the angle knob 17 can be rotated at will, but cannot drive the external spline shaft 15 to rotate, and the angle of the lens frame will not rotate with the rotation of the angle knob 17, thereby avoiding misoperation and improving the fault tolerance rate during operation; when pressing force is applied to the angle knob 17, the external spline portion 16 and the internal spline portion 19 are meshed with each other, and rotating the angle knob 17 drives the external spline shaft 15 to rotate, so that the angle of the lens frame rotates with the rotation of the angle knob 17, thereby realizing the adjustment of the angle of the lens frame / shading plate, and the operation is convenient and the adjustment of the angle of the lens frame / shading plate is intuitive.

[0037] The above is only an embodiment of the present invention, and the common knowledge such as the known specific technical solutions or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the technical solution of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A postoperative shutter for ophthalmic laser surgery, characterized in that: The shading device comprises a base frame, the base frame is rotatably connected with a lead screw, the lead screw is coaxially fixedly connected with a driven bevel gear, the driven bevel gear is meshed with an active bevel gear, the active bevel gear is coaxially fixedly connected with a spacing knob arranged on the outside of the base frame; the lead screw is connected with a pair of linkage blocks through threads with opposite rotation directions, the pair of linkage blocks are both slidably connected with the base frame, when the lead screw rotates, the pair of linkage blocks move linearly toward each other along the axial direction of the lead screw; the inner side of the base frame is slidably connected with a first mirror frame and a second mirror frame, the base frame and the first mirror frame are connected to each other, and the first mirror frame is connected to the base frame and the second mirror frame is connected to the base frame and the second mirror frame is connected to the base frame and the second mirror frame is connected to the base frame and the second mirror frame is connected to the first mirror ... Both the frame and the second frame are detachably connected with shading sheets, the left and right sides of the first frame and the second frame are respectively connected with external spline shafts and connecting shafts, the base frame is provided with a through slot on the side away from the screw, the external spline shaft is rolled through the through slot for adjusting the angle of the frame, the connecting shaft is rotatably connected with the linkage block to adjust the distance between the base frame and / or the first frame and / or the second frame; there are two shading devices, a nose pad is connected between the base frames of the two shading devices, and headbands are connected to the sides of the base frames of the two shading devices away from each other.

2. The postoperative shutter for ophthalmic laser surgery according to claim 1, characterized in that: The external spline shaft is provided with an external spline part on the outer part of the base frame, the outer end face of the external spline shaft is connected with a spring, the free end of the spring is connected with an angle knob, the angle knob is provided with a blank part and an internal spline part matched with the external spline part, and the length of the blank part is not shorter than the length of the external spline part.

3. The postoperative shutter for ophthalmic laser surgery according to claim 2, characterized in that: The active bevel gear is rotatably connected to the inner side of the nose pad, the spacing knob is rotatably connected to the outer side of the nose pad, and the spacing knob is vertically arranged; the angle knob is arranged on the side away from the nose pad, and the angle knob is horizontally arranged.

4. The postoperative shutter for ophthalmic laser surgery according to claim 3, characterized in that: The connecting shaft is a rotating shaft with damping, and the two ends of the connecting shaft are respectively connected to the linkage block and the mirror frame.

5. The postoperative shutter for ophthalmic laser surgery according to claim 4, characterized in that: The upper and lower inner sides of the base frame are both provided with grooves, and the upper and lower sides of the first lens frame and the second lens frame are both connected with rolling balls, and the rolling balls are rolled on the inner sides of the grooves.

6. The postoperative shutter for ophthalmic laser surgery according to claim 5, characterized in that: The two shading devices are divided into a left-eye shading device and a right-eye shading device, and the left-eye shading device and the right-eye shading device are independent of each other.

7. The postoperative shutter for ophthalmic laser surgery according to claim 1, characterized in that: The shading sheet is a photochromic lens.

8. The postoperative shutter for ophthalmic laser surgery according to claim 1, characterized in that: The headband is an elastic band.

9. The postoperative shutter for ophthalmic laser surgery according to claim 1, characterized in that: The edges of the base frame and the nose pad are both covered with rubber.

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