Cornea biomechanical detection instrument and use method thereof

Abstract

The invention discloses a corneal biomechanical detection instrument and a use method thereof, and relates to the technical field of ophthalmology detection.The technical scheme includes that the corneal biomechanical detection instrument comprises a detection assembly, a fixed base is fixedly connected to the front end of the detection assembly, a lower jaw support is slidably connected to the upper portion of the fixed base, and a transmission plate is fixedly connected to the lower portion of the lower jaw support; the lower portion of the lower jaw support is in threaded connection with a transmission plate, the lower portion of the transmission plate is in threaded connection with a first threaded rod, the lower portion of the first threaded rod is fixedly connected with a first transmission wheel, and the first transmission wheel is in transmission connection with a transmission belt. A first gear can be driven to rotate through a first transmission wheel, a second gear and an inner rod can be driven to rotate synchronously through rotation of the first gear, a lower fixing plate and an upper fixing plate can be driven to move inwards through the second gear and the inner rod, and meanwhile the upper side and the lower side of the head of a patient are clamped and fixed; and the stability of the head of the patient in the detection process is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of ophthalmological testing, and in particular to a corneal biomechanics testing instrument and a method for using the same. Background Art

[0002] Corneal biomechanical testing instruments are precision devices used in the field of ophthalmology to evaluate the mechanical properties of the cornea. They quantitatively analyze biomechanical parameters such as corneal hardness, elasticity, and viscoelasticity through non-invasive techniques. Their core value lies in the early identification of corneal ectatic diseases such as keratoconus, assisting in preoperative screening and postoperative safety assessment of refractive surgery, and providing an objective basis for treatments such as corneal cross-linking surgery. The equipment uses air pulse excitation or optical coherence tomography technology, combined with dynamic response analysis algorithms, to generate corneal deformation characteristic curves and biomechanical parameters such as corneal hysteresis and resistance factor within seconds. This technology breaks through the limitations of traditional morphological testing, reveals the health status of the cornea from a functional level, significantly improves the accuracy of ophthalmic disease diagnosis and surgical risk prediction, and has become an indispensable tool for modern corneal diagnosis and treatment.

[0003] However, in actual use of existing devices, corneal biomechanical testing requires the probe to act precisely on the corneal apex. Slight movement of the patient's head will cause the detection point to shift, and this shift will directly change the force direction of the cornea, distorting the pressure-displacement curve, and ultimately affecting the calculation of core parameters. Therefore, a corneal biomechanical testing instrument and a method for use thereof are proposed. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the existing technology that corneal biomechanical testing requires the probe to act precisely on the corneal apex, and slight movement of the patient's head will cause the detection point to shift, and this shift will directly change the force direction of the cornea, distort the pressure-displacement curve, and ultimately affect the calculation of core parameters. A corneal biomechanical testing instrument and its use method are proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A corneal biomechanics detection instrument includes a detection component, wherein the front end of the detection component is fixedly connected to a fixed base, the upper part of the fixed base is slidably connected to a mandibular support, the lower part of the mandibular support is fixedly connected to a transmission plate, the lower part of the transmission plate is threadedly connected to a first threaded rod, the lower part of the first threaded rod is fixedly connected to a first transmission wheel, the first transmission wheel is transmission-connected to a transmission belt, the transmission belt is transmission-connected to a second transmission wheel, the upper part of the second transmission wheel is fixedly connected to a first gear, the first gear is meshed with the second gear, the second gear is meshed with a third gear, the upper part of the third gear is fixedly connected to an outer rod, the upper part of the outer rod is fixedly connected to a fourth gear, the fourth gear is meshed with a transmission rack, one side of the transmission rack is fixedly connected to a lower fixed plate, the upper part of the first gear is fixedly connected to an inner rod, the upper part of the inner rod is fixedly connected to a fifth gear, the fifth gear is meshed with a sixth gear, the upper part of the sixth gear is threadedly connected to the second threaded rod, the second threaded rod is fixedly connected to the upper fixed plate, and two eyelid opening mechanisms are provided on the upper part of the fixed base.

[0006] When the device is in use, the person places the mandible on the mandibular rest, and the mandibular rest is driven downward by gravity. The movement of the mandibular rest drives the first transmission wheel to rotate, and the rotation of the first transmission wheel drives the first gear to rotate. The rotation of the first gear drives the second gear and the inner rod to rotate synchronously. The rotation of the second gear drives the transmission rack to move, and then drives the lower fixed plates set on both sides to move inward, thereby clamping the lower side of the user's head, and the rotation of the inner rod drives the second threaded rod to move, and then drives the upper fixed plates on both sides to close inward, clamping the upper side of the user's head to ensure the stability of the user's head during the detection process. There are two lower fixed plates and two upper fixed plates, and the contact surfaces of the lower fixed plates and the upper fixed plates with the patient are made of flexible materials.

[0007] The above technical solution further includes: The lower part of the transmission plate is fixedly connected to a return spring, and the lower part of the return spring is fixedly connected to a fixed base. The return spring has sufficient elasticity and can effectively rebound the mandibular support to its original position.

[0008] The second gear is rotationally connected to the control housing, and the control housing is fixedly connected to the upper part of the fixed base. There are two control housings, which are arranged on the upper parts of both ends of the fixed base.

[0009] The upper portion of the control housing is fixedly connected to a fixed frame, the interior of the fixed frame is slidably connected to a transmission rack, and the upper portion of the fixed frame is provided with a forehead support for fixing the patient's forehead.

[0010] The upper portion of the fixed frame is fixedly connected with a lifting shell, the upper portion of the lifting shell is provided with a second motor, and the output end of the second motor is provided with a lifting assembly.

[0011] The lifting assembly comprises a third threaded rod arranged at the output end of the second motor, the third threaded rod is rotationally connected between the lifting shell, the third threaded rod is threadedly connected with a transmission member, the transmission member is fixedly connected with an eye opening mechanism, the eye opening mechanism is two in number and can be individually lifted by the lifting assembly.

[0012] The eye opening mechanism is internally provided with an eye opening plate, the eye opening plate is used for opening the eyelids of the user, and a silica gel plate is arranged on the contact surface of the eye opening plate and the eyelids of the patient, so that the silica gel plate is flexibly contacted with the patient.

[0013] The eye opening mechanism comprises an eye opening shell fixedly connected to the upper portion of the transmission member, a first motor is arranged on the upper portion of the eye opening shell, and an eye opening assembly is arranged at the output end of the first motor.

[0014] The eye opening assembly comprises a seventh gear arranged at the output end of the first motor, eighth and ninth gears are meshingly connected on the two sides of the seventh gear, a tenth gear is meshingly connected with the ninth gear, the eighth and tenth gears are meshingly connected with an eye opening plate, and the eye opening plate is slidingly connected with the eye opening shell.

[0015] A use method of a corneal biomechanical detection instrument, comprising the following steps: Step one: first, guide the patient to place the mandibular part in the mandibular support, adjust the position to ensure that the head center line is consistent with the device axis; Step two: the head of the patient is driven to move downward under the action of gravity, the transmission plate is driven to move downward through the downward movement of the mandibular support, the first threaded rod is driven to rotate through the downward movement of the transmission plate, and the first gear is driven to rotate through the rotation of the first threaded rod; Step three: the outer rod and the inner rod are synchronously rotated through the rotation of the first gear, the outer rod is rotated to drive the two lower fixed plates on the sides to move, so as to clamp the lower side of the head of the patient, and the inner rod is rotated to drive the two upper fixed plates on the sides to move, so as to clamp the upper side of the head of the patient, so that the head of the patient is fixed as a whole; Step four: after the head of the patient is fixed, the eyelids of the eyes to be measured of the patient are opened by the eye opening mechanism.

[0016] The present application has the following beneficial effects: In the present invention, when the patient is tested, the mandible is placed on the upper part of the mandibular support, and under the action of gravity, the mandibular support is driven downward by the patient's head, and the downward movement of the mandibular support can drive the first transmission wheels on both sides to rotate, and the first transmission wheel can drive the first gear to rotate, and the rotation of the first gear can drive the second gear and the inner rod to rotate synchronously, and the second gear and the inner rod can respectively drive the lower fixing plate and the upper fixing plate to move inward, thereby clamping and fixing the upper and lower sides of the patient's head at the same time, and the clamping force is applied comprehensively, which effectively improves the stability of the patient's head during the test process, and the fixing process does not require external force intervention, and the patient's mandible is automatically fixed after being placed on the mandibular support, which is easy to use.

[0017] In the present invention, an eyelid opening mechanism is provided on the upper part of the fixed frame, and the eyelid opening plate can be driven to move by the eyelid opening mechanism, thereby gently pressing the edge of the eyelid, further dispersing the pressure, and avoiding local stress concentration. In addition, by starting the second motor, the lifting component can be driven to operate, thereby adjusting the height of the eyelid opening mechanism, so that the eyelid opening mechanism can be accurately positioned on the patient's eyes. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of a corneal biomechanics testing instrument proposed by the present invention; Figure 2 This is a schematic diagram of the internal structure of the fixed base in the present invention; Figure 3 Schematic diagram of the internal structure of the control housing in the present invention; Figure 4 Schematic diagram of the internal structure of the lifting shell in the present invention; Figure 5 Schematic diagram of the internal structure of the fixed frame in the present invention; Figure 6 Schematic diagram of the internal structure of the lid opening shell in the present invention.

[0019] In the figure: 1. detection component; 2. fixed base; 3. control shell; 4. fixed frame; 5. mandibular support; 6. transmission plate; 7. return spring; 8. first threaded rod; 9. first transmission wheel; 10. transmission belt; 11. second transmission wheel; 12. lower fixed plate; 13. transmission rack; 14. second threaded rod; 15. upper fixed plate; 16. lifting shell; 17. eyelid opening shell; 18. first motor; 19. eyelid opening plate; 20. first gear; 21. second gear; 22. third gear; 23. outer rod; 24. inner rod; 25. fourth gear; 26. second motor; 27. third threaded rod; 28. transmission member; 29. ​​fifth gear; 30. sixth gear; 31. seventh gear; 32. eighth gear; 33. ninth gear; 34. tenth gear. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Example 1 like Figures 1-6 As shown, a corneal biomechanics detection instrument proposed by the present invention includes a detection component 1, the front end of the detection component 1 is fixedly connected to a fixed base 2, the upper part of the fixed base 2 is slidably connected to a mandibular support 5, the lower part of the mandibular support 5 is fixedly connected to a transmission plate 6, the lower part of the transmission plate 6 is threadedly connected to a first threaded rod 8, the lower part of the first threaded rod 8 is fixedly connected to a first transmission wheel 9, the first transmission wheel 9 is transmission-connected to a transmission belt 10, the transmission belt 10 is transmission-connected to a second transmission wheel 11, the upper part of the second transmission wheel 11 is fixedly connected to a first gear 20, the first gear 20 is meshedly connected to a second gear 21, and the second gear 2 1 is meshedly connected with a third gear 22, the upper portion of the third gear 22 is fixedly connected to an outer rod 23, the upper portion of the outer rod 23 is fixedly connected to a fourth gear 25, the fourth gear 25 is meshedly connected to a transmission rack 13, one side of the transmission rack 13 is fixedly connected to a lower fixed plate 12, the upper portion of the first gear 20 is fixedly connected to an inner rod 24, the upper portion of the inner rod 24 is fixedly connected to a fifth gear 29, the fifth gear 29 is meshedly connected to a sixth gear 30, the upper portion of the sixth gear 30 is threadedly connected to a second threaded rod 14, the second threaded rod 14 is fixedly connected to an upper fixed plate 15, and two eyelid opening mechanisms are provided on the upper portion of the fixed base 2.

[0022] When the device is in use, the person places the mandible on the mandibular support 5, and the mandibular support 5 is driven downward by gravity. The movement of the mandibular support 5 drives the first transmission wheel 9 to rotate, and the rotation of the first transmission wheel 9 drives the first gear 20 to rotate. The rotation of the first gear 20 drives the second gear 21 and the inner rod 24 to rotate synchronously. The rotation of the second gear 21 drives the transmission rack 13 to move, and then drives the lower fixed plates 12 set on both sides to move inward, thereby clamping the lower side of the user's head, and the rotation of the inner rod 24 drives the second threaded rod 14 to move, and then drives the upper fixed plates 15 on both sides to close inward, clamping the upper side of the user's head to ensure the stability of the user's head during the detection process. There are two lower fixed plates 12 and two upper fixed plates 15, and the contact surfaces of the lower fixed plates 12 and the upper fixed plates 15 with the patient are made of flexible materials.

[0023] The lower part of the transmission plate 6 is fixedly connected to a return spring 7, and the lower part of the return spring 7 is fixedly connected to the fixed base 2. The return spring 7 has sufficient elasticity and can effectively rebound the mandibular support 5 to its original position. The second gear 21 is rotatably connected to the control housing 3. The control housing 3 is fixedly connected to the upper part of the fixed base 2. There are two control housings 3, which are arranged on the upper part of both ends of the fixed base 2. The upper part of the control housing 3 is fixedly connected to a fixed frame 4, and a transmission rack 13 is slidably connected inside the fixed frame 4. A forehead support is provided on the upper part of the fixed frame 4 for fixing the patient's forehead.

[0024] The rotation of the first transmission wheel 9 drives the second transmission wheel 11 connected by the transmission belt 10 to rotate, and the rotation of the second transmission wheel 11 drives the fixedly connected first gear 20 to rotate. The rotation of the first gear 20 drives the second gear 21 and the inner rod 24 to rotate synchronously. The rotation of the second gear 21 drives the meshing third gear 22 to rotate, and the rotation of the third gear 22 drives the fixedly connected outer rod 23 to rotate. The rotation of the outer rod 23 drives the fixedly connected fourth gear 25 to rotate, and the rotation of the fourth gear 25 drives the meshing transmission rack 13 to move, thereby driving the lower fixed plate 12 fixedly connected to the transmission rack 13 to move, thereby clamping and fixing the lower side of the patient's head.

[0025] The rotation of the inner rod 24 can drive the fixedly connected fifth gear 29 to rotate, and the rotation of the fifth gear 29 drives the meshingly connected sixth gear 30 to rotate. The rotation of the sixth gear 30 drives the threaded second threaded rod 14 to move, and then drives the upper fixing plate 15 to move, so that the upper side of the patient's head can be clamped. By synchronously clamping the upper and lower sides, the clamping force is fully applied, which effectively improves the stability of the patient's head during the test. In addition, the fixing process does not require external force intervention. The patient's lower jaw is automatically fixed after being placed on the lower jaw support 5, which is easy to use.

[0026] Example 2 like Figures 1-6 As shown, the upper part of the fixed frame 4 is fixedly connected to the lifting shell 16, the upper part of the lifting shell 16 is provided with a second motor 26, the output end of the second motor 26 is provided with a lifting assembly, the lifting assembly includes a third threaded rod 27 provided at the output end of the second motor 26, the third threaded rod 27 is rotatably connected to the lifting shell 16, the third threaded rod 27 is threadedly connected to the transmission member 28, the transmission member 28 is fixedly connected to the eyelid opening mechanism, the number of the eyelid opening mechanisms is two, and they can be lifted and lowered individually by the lifting assembly.

[0027] The opening eyelid mechanism is internally provided with an opening eyelid plate 19, which is used to open the eyelid of the user, and the contact surface of the opening eyelid plate 19 with the eyelid of the patient is provided with a silica gel plate, which is used to flexibly contact the patient, and the opening eyelid mechanism comprises an opening eyelid shell 17 fixedly connected to the upper part of the transmission member 28, the upper part of the opening eyelid shell 17 is provided with a first motor 18, the output end of the first motor 18 is provided with an opening eyelid assembly, the opening eyelid assembly comprises a seventh gear 31 provided at the output end of the first motor 18, the seventh gear 31 is meshingly connected with an eighth gear 32 and a ninth gear 33 on both sides, the ninth gear 33 is meshingly connected with a tenth gear 34, the eighth gear 32 and the tenth gear 34 are meshingly connected with the opening eyelid plate 19, and the opening eyelid plate 19 is slidingly connected with the opening eyelid shell 17.

[0028] In this embodiment, the upper part of the fixed frame body 4 is provided with an opening eyelid mechanism, the seventh gear 31 can be driven to rotate by starting the first motor 18, the seventh gear 31 drives the meshingly connected eighth gear 32 and ninth gear 33 to rotate, the ninth gear 33 drives the meshingly connected tenth gear 34 to rotate, the synchronous rotation of the eighth gear 32 and the tenth gear 34 drives the meshingly connected opening eyelid plate 19 to move, so as to gently press the edge of the eyelid, further disperses the pressure, avoids local stress concentration, and the third threaded rod 27 can be driven to rotate by starting the second motor 26, the rotation of the third threaded rod 27 drives the meshingly connected transmission member 28 to move, so as to adjust the height of the opening eyelid mechanism, so that the opening eyelid mechanism can be accurately positioned to the eye of the patient.

[0029] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A corneal biomechanics detection instrument, comprising a detection component (1), characterized in that: The front end of the detection component (1) is fixedly connected to a fixed base (2), the upper part of the fixed base (2) is slidably connected to a mandibular support (5), the lower part of the mandibular support (5) is fixedly connected to a transmission plate (6), the lower part of the transmission plate (6) is threadedly connected to a first threaded rod (8), the lower part of the first threaded rod (8) is fixedly connected to a first transmission wheel (9), the first transmission wheel (9) is transmission-connected to a transmission belt (10), the transmission belt (10) is transmission-connected to a second transmission wheel (11), the upper part of the second transmission wheel (11) is fixedly connected to a first gear (20), the first gear (20) is meshedly connected to a second gear (21), the second gear (21) is meshedly connected to a third gear (22), and the The upper portion of the third gear (22) is fixedly connected to an outer rod (23), the upper portion of the outer rod (23) is fixedly connected to a fourth gear (25), the fourth gear (25) is meshedly connected to a transmission rack (13), one side of the transmission rack (13) is fixedly connected to a lower fixed plate (12), the upper portion of the first gear (20) is fixedly connected to an inner rod (24), the upper portion of the inner rod (24) is fixedly connected to a fifth gear (29), the fifth gear (29) is meshedly connected to a sixth gear (30), the upper portion of the sixth gear (30) is threadedly connected to a second threaded rod (14), the second threaded rod (14) is fixedly connected to an upper fixed plate (15), and two eyelid opening mechanisms are provided on the upper portion of the fixed base (2); When the device is used, a person places the mandible on the mandibular support (5), and the mandibular support (5) moves downward under the action of gravity, and the movement of the mandibular support (5) drives the first transmission wheel (9) to rotate, and the rotation of the first transmission wheel (9) drives the first gear (20) to rotate, and the rotation of the first gear (20) drives the second gear (21) and the inner rod (24) to rotate synchronously, and the rotation of the second gear (21) drives the transmission rack (13) to move, thereby driving the lower fixed plates (12) arranged on both sides to move inward, thereby clamping the lower side of the user's head, and the rotation of the inner rod (24) drives the second threaded rod (14) to move, thereby driving the upper fixed plates (15) on both sides to close inward, clamping the upper side of the user's head, and ensuring the stability of the user's head during the detection process.

2. A corneal biomechanics testing instrument according to claim 1, characterized in that: The lower portion of the transmission plate (6) is fixedly connected to a return spring (7), and the lower portion of the return spring (7) is fixedly connected to a fixed base (2).

3. The corneal biomechanics testing instrument according to claim 1, characterized in that: The second gear (21) is rotationally connected to the control housing (3), and the control housing (3) is fixedly connected to the upper part of the fixed base (2).

4. A corneal biomechanics testing instrument according to claim 3, characterized in that: The upper portion of the control housing (3) is fixedly connected to a fixed frame (4), and the interior of the fixed frame (4) is slidably connected to a transmission rack (13).

5. The corneal biomechanics testing instrument according to claim 4, characterized in that: The upper portion of the fixed frame (4) is fixedly connected to a lifting shell (16), the upper portion of the lifting shell (16) is provided with a second motor (26), and the output end of the second motor (26) is provided with a lifting assembly.

6. The corneal biomechanics testing instrument according to claim 5, characterized in that: The lifting assembly comprises a third threaded rod (27) provided at the output end of the second motor (26), the third threaded rod (27) being rotatably connected to the lifting housing (16), the third threaded rod (27) being threadedly connected to a transmission member (28), and the transmission member (28) being fixedly connected to an eyelid opening mechanism.

7. The corneal biomechanics testing instrument according to claim 6, characterized in that: A tarsal opening plate (19) is provided inside the eyelid opening mechanism, and the eyelids of the user are opened by the tarsal opening plate (19).

8. The corneal biomechanics testing instrument according to claim 6, characterized in that: The eyelid opening mechanism comprises an eyelid opening shell (17) fixedly connected to the upper part of a transmission member (28), a first motor (18) is provided on the upper part of the eyelid opening shell (17), and an eyelid opening component is provided at the output end of the first motor (18).

9. The corneal biomechanics testing instrument according to claim 7, characterized in that: The eyelid opening assembly includes a seventh gear (31) provided at the output end of the first motor (18), an eighth gear (32) and a ninth gear (33) being meshedly connected on both sides of the seventh gear (31), the ninth gear (33) being meshedly connected with a tenth gear (34), the eighth gear (32) and the tenth gear (34) being meshedly connected with an eyelid opening plate (19), and the eyelid opening plate (19) being slidably connected to the eyelid opening shell (17).

10. The method for using the corneal biomechanics testing instrument according to claim 1, characterized in that: The following steps are involved: Step 1: First, instruct the patient to place the mandible in the mandibular support (5) and adjust the position to ensure that the midline of the head is consistent with the axis of the device; Step 2: The patient's head drives the mandibular support (5) downward under the action of gravity, and the downward movement of the mandibular support (5) drives the transmission plate (6) downward, and the downward movement of the transmission plate (6) drives the first threaded rod (8) to rotate, and the rotation of the first threaded rod (8) drives the first gear (20) to rotate; Step 3: The outer rod (23) and the inner rod (24) are rotated synchronously by the first gear (20), and the outer rod (23) rotates to drive the lower fixing plates (12) on both sides to move, thereby clamping the lower side of the patient's head, and the inner rod (24) rotates to drive the upper fixing plates (15) on both sides to move, thereby clamping the upper side of the patient's head, so that the patient's head is fixed as a whole; Step 4: After the patient's head is fixed, the eyelid of the patient's eye to be tested is opened by the eyelid opening mechanism.

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