Cornea perceptual meter

Abstract

The utility model discloses a cornea perceptual meter which comprises a shell, a handle is arranged at the bottom of the shell, a support is arranged at one end of the shell, an installation pipe is arranged on the surface of one side of the handle and located below the support in a communicated mode, a sliding rod is connected in the installation pipe in a sliding mode, and one end of the sliding rod is connected with a driving mechanism. The other end of the sliding rod is connected with a clamping mechanism, the clamping mechanism is connected with nylon fibers, the support is arranged at one end of the shell to serve as a supporting point during measurement, the driving mechanism drives the nylon fibers to conduct telescopic displacement, and therefore measurement errors caused by different hand force and stability of a measurer can be relatively reduced. Meanwhile, the situation that the hands make contact with the measured person, and consequently the measured person is uncomfortable in psychology can be avoided, meanwhile, the nylon fibers are detachably connected with the clamping mechanism, one person can replace the nylon fibers, cross infection between different measured persons is avoided, and the using safety is relatively improved.

Description

Technical Field

[0001] The utility model relates to the field of eye detection, in particular to a corneal perceptometer. Background Art

[0002] The cornea contains abundant sensory nerve endings and is the most sensitive part of the human body. Corneal perception test is the simplest and most convenient way to evaluate whether there are abnormalities in the corneal nerves. At present, the Cochet Bonnet corneal perception meter is usually used in clinical practice to test the sensitivity of the cornea. The instrument is in the shape of a pen, with a nylon fiber with a diameter of 0.11mm and a length of 60mm at the front end. When measuring, ask the patient to sit and look straight ahead or turn the eyeball slightly to the direction to be examined. First, use the 60mm fiber end to vertically contact the cornea to make the nylon fiber slightly bend (about 5°). If the patient feels it, record the corneal perception as 60mm. If not, shorten it by 5mm and measure again, and so on. The longer the nylon fiber is, the less pressure it exerts on the cornea, and the more sensitive the corneal perception is; otherwise, the corneal perception is worse.

[0003] When the existing Cochet Bonnet corneal perceptometer is used to test the cornea, the worker needs to hold the instrument body and make the fiber at the front end contact the cornea of ​​the person being measured. During this process, the measurement data may be inaccurate due to the inconsistent strength and stability of the hands of different testers. In addition, the nylon fiber is reused and cannot be replaced, which poses a risk of cross-infection between eyes and between people.

[0004] How to invent a corneal perceptometer to improve these problems has become an urgent problem to be solved by technicians in this field. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a corneal perceptometer with good operating consistency and high safety, aiming to improve the existing corneal perceptometer, which requires the staff to hold the instrument body and make the fiber at the front end contact the cornea of ​​the person being measured when testing the cornea of ​​the person being measured. In this process, the measurement data may have errors due to the influence of the inconsistent hand strength and stability of different measuring persons, and at the same time, it also avoids the cross-infection problem caused by the inability to replace nylon fibers.

[0006] The utility model is implemented as follows: a corneal sensory meter comprises a shell, a handle is arranged at the bottom of the shell, a bracket is arranged at one end of the shell, a mounting tube is arranged on the surface of one side of the handle and is located below the bracket and communicated with each other, a sliding rod is slidably connected in the mounting tube, one end of the sliding rod is connected to a driving mechanism, the other end of the sliding rod is connected to a clamping mechanism, and a replaceable nylon fiber is connected to the clamping mechanism.

[0007] In a preferred technical solution of the present utility model, the driving mechanism includes a connecting plate, which is located inside the handle, one end of the sliding rod is fixedly connected to one side surface of the connecting plate, and two ends of the one side surface of the connecting plate are respectively provided with a sliding hole and a threaded hole, a guide rod is slidably connected in the sliding hole, and the two ends of the guide rod are respectively fixedly connected to the inner walls on both sides of the handle, a driving screw is threadedly connected in the threaded hole, one end of the driving screw is rotatably installed on the inner wall on one side of the handle, and the other end of the driving screw is fixedly connected to one end of the output shaft of the driving motor, and the driving motor is fixedly installed on the inner wall on the other side of the handle.

[0008] In a preferred technical solution of the utility model, the clamping mechanism includes a connecting seat, which is fixedly connected to one end of the sliding rod located outside the handle, and a plurality of tough clamping rods evenly distributed in a ring shape are arranged on one side surface of the connecting seat. A conical nut is threadedly sleeved on the external surface of the connecting seat, and the inner wall of the conical nut is in contact with the one side surface of all the tough clamping rods.

[0009] In a preferred technical solution of the present utility model, the number of the tough clamping rods is at least three.

[0010] In a preferred technical solution of the present utility model, the bracket is made of rubber.

[0011] In a preferred technical solution of the utility model, a control module is arranged inside the shell, and the control module includes a controller and a distance sensor. The distance sensor is arranged on the surface of one side of the handle and located on one side of the mounting tube. The distance sensor and the drive mechanism are both electrically connected to the controller.

[0012] In a preferred technical solution of the present utility model, the control module further includes a display screen, and the display screen is arranged on the other end surface of the shell.

[0013] The beneficial effects of the utility model are as follows: the corneal perceptometer obtained by the utility model through the above design, when in use, by arranging a bracket at one end of the shell as a support point during measurement, and by driving the nylon fiber to perform telescopic displacement through the driving mechanism, the measurement error caused by different hand strength and stability of the measuring person can be relatively reduced, and at the same time, the hand can be prevented from contacting the measured person, causing psychological discomfort to the measured person, and at the same time, the nylon fiber can be replaced by one person through a detachable connection with the clamping mechanism, thereby avoiding cross infection between different measured persons and relatively improving the safety during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a schematic three-dimensional diagram of the overall structure provided by the embodiment of the utility model;

[0016] Figure 2 A schematic three-dimensional diagram of the overall structure of the other side provided by an embodiment of the utility model;

[0017] Figure 3 A schematic three-dimensional diagram of the overall cross-sectional structure of a handle provided in an embodiment of the utility model;

[0018] Figure 4 A schematic three-dimensional diagram of the overall cross-sectional structure of the clamping mechanism provided in the embodiment of the utility model;

[0019] Figure 5 This is a schematic three-dimensional diagram of the overall cross-sectional separation structure of the clamping mechanism provided in an embodiment of the utility model.

[0020] In the figure: 1-housing; 2-handle; 3-bracket; 4-clamping mechanism; 5-sliding rod; 6-nylon fiber; 201-mounting tube; 401-connecting seat; 402-tough clamping rod; 403-conical nut; 501-connecting plate; 502-guide rod; 503-driving screw; 504-driving motor. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figures 1 to 5 The utility model provides a technical solution: a corneal sensory meter, including a shell 1, a handle 2 is arranged at the bottom of the shell 1, a bracket 3 is arranged at one end of the shell 1, a mounting tube 201 is arranged on the surface of one side of the handle 2 and is located below the bracket 3, a sliding rod 5 is slidably connected in the mounting tube 201, one end of the sliding rod 5 is connected to the driving mechanism, the other end of the sliding rod 5 is connected to the clamping mechanism 4, and the clamping mechanism 4 is connected to a nylon fiber 6.

[0023] See also Figure 3 The driving mechanism includes a connecting plate 501, which is located inside the handle 2. One end of the sliding rod 5 is fixedly connected to the surface of one side of the connecting plate 501. Both ends of the surface of one side of the connecting plate 501 are respectively provided with a sliding hole and a threaded hole. A guide rod 502 is slidably connected in the sliding hole. Both ends of the guide rod 502 are respectively fixedly connected to the inner walls on both sides of the handle 2. A driving screw 503 is threadedly connected in the threaded hole. One end of the driving screw 503 is rotatably installed on the inner wall of one side of the handle 2. The other end of the driving screw 503 is fixedly connected to one end of the output shaft of the driving motor 504. The driving motor 504 is fixedly installed on the inner wall on the other side of the handle 2.

[0024] Start the drive motor 504 to drive the drive screw 503 to rotate, so that the connecting plate 501 drives the sliding rod 5 to move with the guide rod 502 as the guide, thereby realizing the independent displacement of the sliding rod 5 relative to the mounting tube 201, driving the nylon fiber 6 to expand and contract, thereby avoiding data errors caused by different force and stability of different measurers in manual measurement, thereby relatively improving the detection accuracy of the perceptometer.

[0025] See also Figure 4 and Figure 5 The clamping mechanism 4 includes a connecting seat 401, which is fixedly connected to one end of the sliding rod 5 located outside the handle 2. A plurality of ring-shaped and evenly distributed tough clamping rods 402 are arranged on one side surface of the connecting seat 401. A conical nut 403 is threadedly sleeved on the outer side of the connecting seat 401, and the inner wall of the conical nut 403 fits with the surface of one side of all the tough clamping rods 402.

[0026] The connecting seat 401 and the conical nut 403 are threadedly connected. When the conical nut 403 is rotated to make an independent displacement relative to the connecting seat 401, the inner wall thereof will compress all the tough clamping rods 402, causing all the tough clamping rods 402 to bend at different angles, thereby clamping one end of the nylon fiber 6 through a plurality of tough clamping rods 402, thereby making it possible to conveniently replace the nylon fiber 6, thereby avoiding cross infection to different persons being measured due to repeated use of the nylon fiber 6, and improving the safety and convenience during measurement.

[0027] Furthermore, the number of the flexible clamping rods 402 is at least three.

[0028] The circumferential clamping of one end of the nylon fiber 6 by more than three tough clamping rods 402 is relatively more stable.

[0029] See also Figure 1 and Figure 2 The bracket 3 is made of rubber.

[0030] When in use, the bracket 3 is held above the eyes of the person being measured to support the whole body. The rubber material can relatively reduce the discomfort of the person being measured and improve the comfort during use. By setting the bracket 3 to provide a support point for the whole body during measurement, the problem of errors in measurement data caused by hand shaking can be avoided. At the same time, it can also avoid the hand touching the person being measured, reducing the psychological discomfort of the person being measured.

[0031] Furthermore, a control module is disposed inside the housing 1, and the control module includes a controller and a distance sensor. The distance sensor is disposed on a surface of one side of the handle 2 and located on one side of the mounting tube 201. The distance sensor and the driving mechanism are both electrically connected to the controller.

[0032] By setting up a distance sensor, the overall distance to the eyes of the person being measured can be measured, so that the displacement distance of the sliding rod 5 can be limited by the controller to prevent the sliding rod 5 from accidentally hurting the eyes of the person being measured due to excessive extension, thereby improving safety during use.

[0033] Furthermore, the control module also includes a display screen, which is arranged on the other end surface of the housing 1.

[0034] By setting up a display screen, the measurement data can be read more conveniently and intuitively, making it easier for personnel to record.

[0035] Working principle: hold the handle 2 and place the bracket 3 above the eye of the person being measured so that the position of the nylon fiber 6 corresponds to the position of the cornea. With the bracket 3 as the support point, start the drive motor 504 to drive the sliding rod 5 to slide in the mounting tube 201, so that one end of the nylon fiber 6 is displaced toward and contacts the cornea of ​​the person being measured. After the measurement is completed, retract the sliding rod 5. By using the bracket 3 as the support point and driving the nylon fiber 6 to move through the drive mechanism, the error in the measurement data caused by the different hand strength and stability of the person being measured during manual measurement can be relatively reduced. Before measuring the next person being measured, turn the conical nut 403 to loosen all the tough clamping rods 402 outward, take out the used nylon fiber 6 and replace it with a new nylon fiber 6 and insert it into the conical nut 403, then reverse the conical nut 403 to compress all the tough clamping rods 402 to deform and bend, and clamp one end of the nylon fiber 6 again to avoid cross infection.

[0036] It should be noted that the specific models and specifications of the drive motor 504, controller, display screen and distance sensor need to be selected and determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in the field, so it will not be described in detail.

[0037] The power supply and principles of the driving motor 504, the controller, the display screen and the distance sensor are clear to those skilled in the art and will not be described in detail herein.

[0038] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A corneal sensory meter, characterized in that: It includes a shell, a handle is provided at the bottom of the shell, a bracket is provided at one end of the shell, a mounting tube is provided on one side surface of the handle and is located below the bracket, a sliding rod is slidably connected in the mounting tube, one end of the sliding rod is connected to a driving mechanism, the other end of the sliding rod is connected to a clamping mechanism, and nylon fiber is connected to the clamping mechanism.

2. The corneal sensory meter according to claim 1, characterized in that: The driving mechanism includes a connecting plate, which is located inside the handle, one end of the sliding rod is fixedly connected to a surface of one side of the connecting plate, two ends of the surface of one side of the connecting plate are respectively provided with a sliding hole and a threaded hole, a guide rod is slidably connected in the sliding hole, two ends of the guide rod are respectively fixedly connected to the inner walls on both sides of the handle, a driving screw is threadedly connected in the threaded hole, one end of the driving screw is rotatably mounted on the inner wall of one side of the handle, the other end of the driving screw is fixedly connected to one end of the output shaft of the driving motor, and the driving motor is fixedly mounted on the inner wall on the other side of the handle.

3. The corneal sensory meter according to claim 1, characterized in that: The clamping mechanism includes a connecting seat, which is fixedly connected to one end of the sliding rod located outside the handle. A plurality of tough clamping rods are evenly distributed in a ring shape on one side surface of the connecting seat. A conical nut is threadedly sleeved on the outer surface of the connecting seat, and the inner wall of the conical nut fits with the surface of one side of all the tough clamping rods.

4. The corneal sensory meter according to claim 3, characterized in that: The number of the tough clamping rods is at least three.

5. The corneal sensory meter according to claim 1, characterized in that: The bracket is made of rubber.

6. The corneal sensory meter according to claim 1, characterized in that: A control module is arranged inside the shell, and the control module includes a controller and a distance sensor. The distance sensor is arranged on a surface of one side of the handle and located on one side of the mounting tube. The distance sensor and the driving mechanism are both electrically connected to the controller.

7. The corneal sensory meter according to claim 6, characterized in that: The control module also includes a display screen, which is arranged on the other end surface of the shell.

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