Corneal topography instrument

Abstract

The invention relates to the technical field of eye image processing, in particular to a corneal topography instrument which comprises a base, a supporting mechanism and a movable corneal topography instrument body are arranged on the base, the supporting mechanism comprises symmetrically-arranged stand columns, and lifting blocks are slidably arranged at the ends, close to the symmetric center, of the stand columns. A positioning strip used for limiting the forehead position of a patient is connected between the two lifting blocks, a lifting rod is slidably arranged between the two stand columns, a sliding table is slidably arranged on the lifting rod, a containing groove used for supporting the jaw of the patient is formed in the sliding table, a lifting table is elastically connected into the containing groove, a locking block is elastically connected into the sliding table, and a locking groove is formed in the lifting rod. A locking rod is arranged in the locking block in a sliding and penetrating mode, and a plurality of locking holes are formed in the locking groove. Therefore, the supporting mechanism can be quickly adjusted, the operation time is saved, the working efficiency is improved, the comfort degree of a patient is improved, the adjusting range is large, and the application range is wide.

Description

Technical Field

[0001] The present invention relates to the technical field of eye image processing, and in particular to a corneal topographer. Background Art

[0002] The cornea is the most important optical surface of the human eye. Any changes in the curvature of the cornea and its corneal surface will change the total refractive power of the eyeball or change the quality of retinal imaging. Therefore, the measurement and analysis of the cornea and corneal morphology have become an important part of ocular refractive research and clinical practice. There are many corneal topograph products based on different measurement principles on the market.

[0003] At present, the existing corneal topograph, for example, the Chinese patent with publication number CN216317545U, discloses a portable corneal topograph, including a box body and a corneal topograph body, the corneal topograph body is located inside the box body, a connecting hinge is arranged on the top right side of the box body, a box cover assembly which is in contact with the top of the box body is arranged on the left side of the connecting hinge, a clamping assembly which has one end extending to the left side and is clamped with the box cover assembly is arranged on the left side of the inner wall of the box body, a storage assembly located below the clamping assembly is arranged between the left and right sides of the inner wall of the box body, and the corneal topograph body is provided with a plurality of corneal topographs, wherein the corneal topograph body is provided with a plurality of corneal topographs ... The corneal topograph body is arranged on the top of the storage component, which facilitates the carrying of the corneal topograph body and plays a certain protective role for the corneal topograph body. However, when the corneal topograph is in use, due to certain differences in the eye positions of patients, the supporting mechanism of the corneal topograph needs to be adjusted before each examination so that the patient's eyes are facing the corneal topograph. It is difficult for the patient to quickly find a comfortable angle by relying solely on mechanical adjustments. Repeated adjustments not only waste time, but also have low efficiency. The existing equipment is inconvenient to use.

[0004] How to quickly adjust the support mechanism, save operation time, improve work efficiency, enhance patient comfort, and have a large adjustment range and a wide range of applications has become a technical problem that needs to be broken through.

[0005] In summary, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the invention

[0006] In view of the above-mentioned defects, the purpose of the present invention is to provide a corneal topograph, which has a simple structure, can quickly adjust the supporting mechanism, save operation time, improve work efficiency, enhance patient comfort, and has a large adjustment range and a wide range of applicability.

[0007] In order to achieve the above-mentioned object, the present invention provides a corneal topograph, comprising a base, on which a supporting mechanism and a movable corneal topograph body are provided.

[0008] The supporting mechanism includes symmetrically arranged columns, each of which is slidably provided with a lift block at one end of the column close to the symmetry center, a positioning strip for limiting the position of the patient's forehead is connected between the two lift blocks, a lift rod is slidably provided between the two columns, a sliding platform is slidably provided on the lift rod, a placement groove for supporting the patient's chin is provided on the sliding platform, the placement groove is elastically connected with the lift platform, the sliding platform is elastically connected with a locking block cooperating with the lift platform, the lift rod is provided with a locking groove cooperating with the locking block, a movable locking rod is slidably penetrated inside the locking block, and a plurality of locking holes cooperating with the locking rod are provided in the locking groove.

[0009] When the patient's chin presses down on the lifting platform, the inclined surface of the lifting platform cooperates with the matching groove of the locking block, pushing the locking block to retract into the interior of the sliding platform, so that the locking block disengages from the locking groove. At this time, the patient moves his head to drive the sliding platform to move, so that the patient's eyes are facing the corneal topographer body.

[0010] According to the corneal topograph of the present invention, a fixed block is connected to the sliding platform, one end of the fixed block passes through the lifting rod, and one end of the locking rod passes into the fixed block to connect with the fixed head.

[0011] According to the corneal topograph of the present invention, the fixing block is symmetrically and elastically connected with a positioning piece, and the fixing head is provided with a positioning hole matched with the positioning piece.

[0012] According to the corneal topograph of the present invention, one end of the lifting platform close to the sliding platform is inserted into the sliding platform, and the lifting platform inside the sliding platform is symmetrically provided with plug-in blocks, and the sliding platform is provided with slots matching with the plug-in blocks, and the plug-in blocks are slidably set in the slots, and elastic parts are provided between the plug-in blocks and the slots.

[0013] According to the corneal topographer of the present invention, the elastic member is a spring.

[0014] According to the corneal topograph of the present invention, the lifting platform in the sliding platform is provided with an inclined surface cooperating with the locking block, and the locking block is provided with a matching groove cooperating with the lifting platform.

[0015] According to the corneal topograph of the present invention, a telescopic member is provided between the lifting rod and the base, one end of the telescopic member is connected to the base, and the other end of the telescopic member is connected to the lifting rod.

[0016] According to the corneal topograph of the present invention, the lifting block is provided with an extension block, the end of the extension block close to the symmetry center is slidably provided with a slider, the extension block is threaded with an adjustment rod, the end of the adjustment rod close to the slider is rotatably connected to the slider, and the positioning bar is arranged between the two sliders.

[0017] According to the corneal topograph of the present invention, a driving rod is passed through the base at the column, one end of the driving rod passes through the base, a driven rod is rotatably connected in the column, one end of the driven rod close to the base is passed through the base to be connected to the driven bevel gear, the driven bevel gears are meshed with the active bevel gears, the active bevel gears are sleeved on the driving rod, and one end of the lifting block close to the column is passed through the internal thread of the column and is connected to the driven rod.

[0018] According to the corneal topograph of the present invention, a slide is provided on the base, the bottom end of the corneal topograph body is inserted into the slide, a driving member is provided in the slide, one end of the driving member is connected to the slide, and the other end of the driving member is connected to the corneal topograph body.

[0019] The purpose of the present invention is to provide a corneal topograph, including a supporting mechanism, wherein the positioning strip of the supporting mechanism cooperates with the sliding table and other structures, and can quickly support the patient's head, save operation time, and improve work efficiency; after adjusting the horizontal position of the sliding table, the locking rod can be made to cooperate with the locking hole to prevent the sliding table from sliding at will; the fixed block is symmetrically elastically connected with a positioning piece, and the fixed head is provided with a positioning hole that cooperates with the positioning piece. When the positioning piece and the positioning hole cooperate with each other, the position of the fixed head can be temporarily locked, thereby fixing the locking rod; the positioning strip and the sliding table have a large adjustment range and a wide range of application, which can improve the patient's comfort. In summary, the beneficial effects of the present invention are: the supporting mechanism can be quickly adjusted, which saves operation time, improves work efficiency, and improves the patient's comfort, and the adjustment range is large and the application range is wide. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of the present invention; Figure 2 This is a structural diagram of the corneal topograph body; Figure 3 This is a cross-sectional view of the interior of the column; Figure 4 This is the structural diagram of the sliding table; Figure 5 It is a cross-sectional view at the sliding table; Figure 6 It is a structural diagram of the adjusting rod; in the figure: 1-corneal topograph body, 11-contact port, 2-base, 3-support mechanism, 31-column, 311-driven rod, 312-driven bevel gear, 32-driving rod, 321-active bevel gear, 33-lifting block, 331-extension block, 332-slide groove, 333-sliding block, 334-adjusting rod, 34-lifting rod, 341-hollow groove, 342-avoidance groove, 35-sliding table, 351-placing groove, 352-lifting table, 36-locking block, 361-matching groove, 37-fixing block, 371-positioning piece, 372-fixing head, 373-locking rod, 4-positioning strip, 5-telescopic piece, 6-elastic piece. DETAILED DESCRIPTION

[0021] 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. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0022] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", "top / bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be a direct connection or an indirect connection through an intermediate medium. It can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] See also Figure 1~Figure 3The present invention provides a corneal topograph, including a base 2, on which a movable corneal topograph body 1 is slidably provided (the structure of the corneal topograph body 1 is the same as that of the prior art, both of which include structures such as a contact port 11, which is a mature prior art in this field, and its specific structure and working principle are not repeated here), a slide is provided on the base 2, the bottom end of the corneal topograph body 1 is inserted into the slide, a driving member (not shown in the figure) is provided in the slide, one end of the driving member is connected to the slide, and the other end of the driving member is connected to the corneal topograph body 1, and the driving member can drive the corneal topograph body 1 to slide horizontally on the base 2, a supporting mechanism 3 is provided on the base 2, and the supporting mechanism 3 is directly opposite to the contact port 11 of the corneal topograph body 1, and the supporting mechanism 3 includes symmetrically arranged columns 31, a driving rod 32 is penetrated in the base 2 at the column 31, and the driving rod 32 is rotatably connected to the base 2, one end of the driving rod 32 penetrates the base 2, and a driven rod 311 is rotatably connected in the column 31. The ends of the driven rods 311 close to the base 2 are all inserted into the base 2, and the driven rods 311 in the base 2 are connected with driven bevel gears 312, and the driven bevel gears 312 can drive the driven rods 311 to rotate, and the driven bevel gears 312 are all meshed with active bevel gears 321, and the active bevel gears 321 are all sleeved on the driving rods 32, and the driving rods 32 can drive the active bevel gears 321 to rotate, and the ends of the columns 31 close to the symmetry center are all slidably provided with lifting blocks 33, and the lifting blocks 33 can be moved on the columns 3 1, one end of the lifting block 33 close to the column 31 is inserted into the internal thread of the column 31 and connected to the driven rod 311. The column 31 is provided with an escape space to allow the lifting block 33 to slide up and down; the driving rod 32 is rotated, the driving rod 32 drives the active bevel gear 321 to rotate, the active bevel gear 321 drives the driven bevel gear 312 to rotate, the driven bevel gear 312 drives the driven rod 311 to rotate, the lifting block 33 cannot rotate with the driven rod 311, and can only perform lifting and lowering movements on the column 31.

[0025] See also Figure 1 , Figure 2 and Figure 6 , the lifting block 33 is provided with an extension block 331, and the end of the extension block 331 close to the symmetry center is provided with a slide groove 332, and a slider 333 is slidably provided in the slide groove 332 (the slider 333 can slide in the slide groove 332, but the slider 333 will not fall out of the slide groove 332), and an adjusting rod 334 is threadedly penetrated on the extension block 331, and the end of the adjusting rod 334 close to the slider 333 is rotatably connected to the slider 333, and the same positioning bar 4 is connected between the two sliders 333, and the positioning bar 4 has a certain deformation ability, and the positioning bar 4 can be used to limit the position of the patient's forehead; the two adjusting rods 334 are rotated respectively, and the adjusting rod 334 drives the slider 333 to slide in the slide groove 332, and the positions of the two sliders 333 are adjusted, thereby adjusting the position of the positioning bar 4.

[0026] See also Figure 1 , Figure 2 and Figure 6 Preferably, the positioning strip 4 is a rubber strip, which can both limit the position of the patient's forehead and avoid damaging the skin of the patient's forehead.

[0027] See also Figure 1~Figure 5 A lifting rod 34 is slidably provided between the two columns 31, and both ends of the lifting rod 34 are slidably connected to the columns 31. The columns 31 are provided with grooves that allow the lifting rod 34 to move. A sliding platform 35 is slidably provided on the lifting rod 34. The lifting rod 34 is provided with a hollow groove 341 that allows the sliding platform 35 to slide. The sliding platform 35 is provided with a placement groove 351 for supporting the patient's chin. A lifting platform 352 is elastically connected in the placement groove 351 (the end of the lifting platform 352 close to the sliding platform 35 penetrates into the sliding platform 35, and the lifting platform 35 in the sliding platform 35 is elastically connected to the lifting platform 352. The platform 352 is symmetrically provided with plug blocks, the sliding platform 35 is provided with slots that match the plug blocks, the plug blocks are slidably arranged in the slots, and elastic members 6 are provided between the plug blocks and the slots), the sliding platform 35 is elastically connected with a locking block 36 (the connection method between the locking block 36 and the sliding platform 35 is the same as the connection method between the lifting platform 352 and the sliding platform 35, and the specific connection method and working principle are not repeated here), the lifting platform 352 in the sliding platform 35 is provided with an inclined surface that matches the locking block 36, and the locking block 36 is provided with a locking surface that matches the lifting platform 352 cooperates with the matching groove 361, one end of the locking block 36 passes through the sliding platform 35, and the lifting rod 34 is provided with a locking groove that cooperates with the locking block 36. The inner wall of the locking groove and the outer periphery of the locking block 36 are provided with mutually matching rough surfaces; in the natural state (that is, without external interference), under the action of the elastic member 6 at the locking block 36, one end of the locking block 36 passes through the sliding platform 35 and is inserted into the locking groove. Since the friction between the locking block 36 and the locking groove is relatively large, the cooperation between the locking block 36 and the locking groove can prevent sliding. The platform 35 slides freely; the patient puts his chin into the placement groove 351, and the patient's chin presses down the lifting platform 352, and the lifting platform 352 squeezes the elastic member 65 at the lifting platform 352. At the same time, the inclined surface of the lifting platform 352 cooperates with the matching groove 361 of the locking block 36 to push the locking block 36 to retract into the sliding platform 35, so that the locking block 36 is disengaged from the locking groove. At this time, the patient can move the head to drive the sliding platform 35 to move, thereby adjusting the position so that the patient's eyes are facing the contact port 11 of the corneal topograph body 1.

[0028] See also Figure 1~Figure 5The end of the sliding table 35 away from the corneal topograph body 1 is connected to the fixed block 37, and the end of the fixed block 37 away from the corneal topograph body 1 passes through the lifting rod 34. The lifting rod 34 is provided with an avoidance groove 342 for allowing the fixed block 37 to slide. A locking rod 373 is slidably penetrated inside the locking block 36 (the locking rod 373 can slide in the locking block 36, but the locking rod 373 will not separate from the locking block 36). The end of the locking rod 373 away from the corneal topograph body 1 passes into the fixed block 37 to connect the fixed head 372, and the fixed head 372 is slidably connected to the fixed block 37. The end of the fixed head 372 away from the locking rod 373 passes through the fixed block 37. The friction between the fixed head 372 and the fixed block 37 is relatively large (the fixed head 372 will not move without external interference). A plurality of locking holes cooperating with the locking rod 373 are provided in the locking groove. When the locking rod 373 cooperates with the locking hole, the position of the sliding table 35 can be temporarily locked to prevent the sliding table 35 from sliding at will.

[0029] See also Figure 1~Figure 5 Preferably, a positioning piece 371 is symmetrically and elastically connected inside the fixed block 37 (the connection method between the fixed block 37 and the positioning piece 371 is the same as the connection method between the lifting platform 352 and the sliding platform 35, and its specific connection method and working principle are not repeated here), and a positioning hole that cooperates with the positioning piece 371 is provided on the fixed head 372. When the positioning piece 371 and the positioning hole cooperate with each other, the position of the fixed head 372 can be temporarily locked, thereby fixing the locking rod 373.

[0030] See also Figure 1~Figure 5 Furthermore, a telescopic member 5 is provided between the lifting rod 34 and the base 2, one end of the telescopic member 5 is connected to the base 2, and the other end of the telescopic member 5 is connected to the lifting rod 34. The telescopic member 5 can drive the lifting rod 34 to perform lifting and lowering movements, thereby realizing the height adjustment of the lifting rod 34 individually, expanding the scope of application, and further improving the patient's comfort.

[0031] See also Figure 1 to Figure 6 Preferably, the elastic member 6 is a spring to provide return power.

[0032] See also Figure 1 to Figure 6 Preferably, the driving member and the telescopic member 5 are both electric cylinders to provide power for the device.

[0033] See also Figure 1 to Figure 6The patient places his chin into the placement groove 351, uses the patient's chin to press down the lifting platform 352, rotates the driving rod 32, and adjusts the height of the sliding platform 35 (if the adjustment range is limited, the telescopic part 5 can also be opened to adjust the height of the lifting rod 34 alone). When the patient's forehead abuts the positioning bar 4, the adjustment of the height of the sliding platform 35 is completed. If the patient's forehead is relatively protruding, in order to avoid the positioning bar 4 from tightly squeezing the patient's head, the two adjusting rods 334 can be rotated to adjust the positions of the two sliders 333, thereby adjusting the position of the positioning bar 4.

[0034] After the height adjustment of the sliding table 35 is completed, as the patient's chin presses down the lifting table 352, the inclined surface of the lifting table 352 cooperates with the matching groove 361 of the locking block 36, pushing the locking block 36 to retract into the inside of the sliding table 35, so that the locking block 36 is disengaged from the locking groove. At this time, the patient can move the sliding table 35 by moving the head, thereby adjusting the position so that the patient's eyes are facing the contact port 11 of the corneal topograph body 1. After adjusting the horizontal position of the sliding table 35, the locking rod 373 can be matched with the locking hole to prevent the sliding table 35 from sliding at will.

[0035] The present invention provides a corneal topograph, including a support mechanism, wherein the positioning strip of the support mechanism cooperates with the sliding table and other structures, and can quickly support the patient's head, save operation time, and improve work efficiency; after adjusting the horizontal position of the sliding table, the locking rod can be made to cooperate with the locking hole to prevent the sliding table from sliding at will; the fixed block is symmetrically elastically connected with a positioning piece, and the fixed head is provided with a positioning hole that cooperates with the positioning piece, and when the positioning piece and the positioning hole cooperate with each other, the position of the fixed head can be temporarily locked, thereby fixing the locking rod; the positioning strip and the sliding table have a large adjustment range and a wide range of application, which can improve the patient's comfort. In summary, the beneficial effects of the present invention are: the support mechanism can be quickly adjusted, operation time can be saved, work efficiency can be improved, and the patient's comfort can be improved, and the adjustment range is large and the application range is wide.

[0036] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art may make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A corneal topographer, characterized in that: It comprises a base, on which a supporting mechanism and a movable corneal topograph body are arranged; The support mechanism comprises symmetrically arranged columns, each end of each column close to the symmetry center is slidably provided with a lifting block that can be lifted, a positioning strip for limiting the position of the patient's forehead is connected between the two lifting blocks, a lifting rod is slidably provided between the two columns, a sliding platform is slidably provided on the lifting rod, a placement groove for supporting the patient's chin is provided on the sliding platform, a lifting platform is elastically connected in the placement groove, a locking block cooperating with the lifting platform is elastically connected in the sliding platform, a locking groove cooperating with the locking block is provided on the lifting rod, a movable locking rod is slidably penetrated in the locking block, and a plurality of locking holes cooperating with the locking rod are provided in the locking groove; When the patient's chin presses down on the lifting platform, the inclined surface of the lifting platform cooperates with the matching groove of the locking block, pushing the locking block to retract into the interior of the sliding platform, so that the locking block disengages from the locking groove. At this time, the patient moves his head to drive the sliding platform to move, so that the patient's eyes are facing the corneal topographer body.

2. The corneal topographer according to claim 1, characterized in that: The sliding platform is connected with a fixed block, one end of the fixed block passes through the lifting rod, and one end of the locking rod passes through the fixed block to connect with the fixed head.

3. The corneal topographer according to claim 2, characterized in that: A positioning piece is symmetrically and elastically connected inside the fixing block, and a positioning hole matching with the positioning piece is provided on the fixing head.

4. The corneal topographer according to claim 1, characterized in that: One end of the lifting platform close to the sliding platform penetrates into the sliding platform, and plug blocks are symmetrically arranged on the lifting platform inside the sliding platform. The sliding platform is provided with slots that cooperate with the plug blocks. The plug blocks are slidably arranged in the slots, and elastic parts are arranged between the plug blocks and the slots.

5. The corneal topographer according to claim 4, characterized in that: The elastic member is a spring.

6. The corneal topographer according to claim 1, characterized in that: The lifting platform in the sliding platform is provided with an inclined surface matched with the locking block, and the locking block is provided with a matching groove matched with the lifting platform.

7. The corneal topographer according to claim 1, characterized in that: A telescopic member is provided between the lifting rod and the base, one end of the telescopic member is connected to the base, and the other end of the telescopic member is connected to the lifting rod.

8. The corneal topographer according to claim 6, characterized in that: The lifting blocks are each provided with an extension block, and a slider is slidably provided at one end of the extension block close to the symmetry center. An adjusting rod is threadedly passed through the extension block, and the end of the adjusting rod close to the slider is rotatably connected to the slider, and the positioning bar is arranged between the two sliders.

9. The corneal topographer according to claim 1, characterized in that: A driving rod is inserted into the base at the column, and one end of the driving rod passes through the base. A driven rod is rotatably connected in the column. The end of the driven rod close to the base is inserted into the base and connected to the driven bevel gear. The driven bevel gears are meshed with the active bevel gears. The active bevel gears are sleeved on the driving rod, and the end of the lifting block close to the column is inserted into the internal thread of the column and connected to the driven rod.

10. The corneal topographer according to claim 1, characterized in that: The base is provided with a slideway, the bottom end of the corneal topograph body is inserted into the slideway, a driving member is provided in the slideway, one end of the driving member is connected to the slideway, and the other end of the driving member is connected to the corneal topograph body.

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