CN118044776A - Cornea diameter measuring device - Google Patents

Abstract

The invention relates to the technical field of medical equipment, and provides a cornea diameter measuring device. The cornea diameter measuring device comprises a measuring ruler, a first ruler body foot, a second ruler body foot and an electronic distance measuring component. The measuring ruler is provided with a level meter which is used for measuring the level of the measuring ruler; the first ruler body foot is fixedly arranged on the first side of the measuring ruler; the second ruler body foot is movably arranged on the first side of the measuring ruler and is parallel to the first ruler body foot; the electronic distance measuring assembly is arranged on the first ruler body foot or the second ruler body foot and is used for detecting the distance between the first ruler body foot and the second ruler body foot. The invention solves the defects that in the prior art, the accuracy of the measuring scale of the angle gauge is not enough and the measurement is required to be observed and calculated by human eyes, so that the measured number is not accurate enough and the error is larger, and realizes the measurement by the electronic measuring instrument, thereby ensuring that the measuring accuracy is more accurate and the reading is more convenient and quicker.

Description

Cornea diameter measuring device

Technical Field

The invention relates to the technical field of medical equipment, in particular to a cornea diameter measuring device.

Background

Myopia is a common disease of ophthalmology, the far vision of a myopic patient is reduced to affect daily work, study and life quality, along with the rapid development of socioeconomic, the eye habit of people is changed, the incidence rate of myopia is increased year by year, and myopia becomes a public health problem worldwide, in particular to high myopia. In recent years, with the continuous improvement of medical instruments and ophthalmic surgery techniques, more and more myopic patients choose to perform refractive correction surgery.

Refractive correction surgery is largely divided into "subtractive surgery (various types of corneal tissue ablation surgery)" and "additive surgery (ICL (Implantable Collamer Lens) implants/implantable contact lens implants/posterior chamber with lens intraocular lens implants"). The safety, effectiveness and repeatability of ICL implantation depend on the selection of four types of ICL intraocular lens. The selection of ICL intraocular lens model mainly depends on the accurate measurement of eye structure, wherein the measurement of the transverse diameter of the cornea is particularly important. The angle gauge measuring ruler is used as a common tool for measuring the transverse diameter of the cornea, but because the precision of the graduation is insufficient and the observation and calculation are needed by human eyes, the measurement number is often inaccurate and the error is large.

Disclosure of Invention

The invention provides a cornea diameter measuring device, which is used for solving the defects that in the prior art, the accuracy of the scale of an angle gauge is insufficient, and human eyes are required to observe and calculate, so that the measured number is often insufficient, and the error is large.

The present invention provides a cornea diameter measuring apparatus, comprising:

The measuring ruler is provided with a level meter, and the level meter is used for measuring the level of the measuring ruler;

the first ruler body feet are fixedly arranged on the first side of the measuring ruler;

The second ruler body foot is movably arranged on the first side of the measuring ruler and is parallel to the first ruler body foot;

the electronic distance measuring assembly is arranged on the first ruler body foot or the second ruler body foot and is used for detecting the distance between the first ruler body foot and the second ruler body foot.

According to the cornea diameter measuring device provided by the invention, the second ruler body foot is arranged on the measuring ruler in a sliding way through the sliding component, and the sliding component comprises:

The sliding sleeve is arranged on the measuring ruler in a sliding manner, and the second ruler body feet are arranged on one side of the sliding sleeve;

The fastening component is arranged on the sliding sleeve and used for switching between a first state and a second state, and the sliding sleeve and the measuring ruler are mutually limited in the first state; in the second state, the fastening member releases the restriction between the sliding sleeve and the measuring scale.

According to the present invention, there is provided a cornea diameter measuring apparatus, the fastening member comprising:

a threaded rod extending through the sliding sleeve and threadedly connected with the sliding sleeve; the threaded rod is rotated to enable the fastening component to be switched between the first state and the second state;

The sliding piece is rotationally arranged at one end of the threaded rod, which faces the measuring ruler; in the first state, the slider is in contact with the measuring scale, and in the second state, a gap is formed between the slider and the measuring scale.

According to the cornea diameter measuring device provided by the invention, the measuring ruler comprises a first sliding part and a second sliding part;

The first sliding parts and the second sliding parts are arranged on the upper side and the lower side of the measuring ruler in a one-to-one correspondence mode, and the upper end and the lower end of the sliding sleeve are respectively connected with the first sliding parts and the second sliding parts in a sliding mode.

According to the cornea diameter measuring device provided by the invention, the second side of the measuring ruler is provided with the ball guiding group, and the sliding sleeve is in sliding connection with the ball guiding group.

According to the present invention there is provided a cornea diameter measuring apparatus, the electronic ranging assembly comprising:

the displacement detector is arranged on the second ruler body foot and used for detecting the distance between the measuring ruler and the second ruler body foot;

and the screen display is arranged on the first side of the measuring ruler, is electrically connected with the displacement detector and is used for displaying detection data of the displacement detector.

According to the cornea diameter measuring device provided by the invention, the first ruler body foot is provided with the first stirring piece, the second ruler body foot is provided with the second fluctuation piece, and the first stirring piece and the second fluctuation piece are positioned on the same horizontal plane.

According to the cornea diameter measuring device provided by the invention, the first side of the measuring ruler is further provided with the scales, one side surface of the first ruler body foot opposite to the second ruler body foot is aligned with the initial scales of the scales, and the scales are used for measuring the distance between the first ruler body foot and the second ruler body foot.

According to the invention, the cornea diameter measuring device further comprises a holding assembly, wherein the holding assembly is arranged on the second side of the measuring ruler, and the holding assembly comprises:

the first end of the connecting piece is connected with the measuring ruler;

And the holding rod is connected with the second end of the connecting piece.

According to the cornea diameter measuring device provided by the invention, the anti-skid sleeve is arranged outside the holding rod.

The above technical solutions in the embodiments of the present invention have at least one of the following technical effects:

According to the invention, the electronic distance measuring assembly is arranged on the first ruler body foot and the second ruler body foot, so that a more accurate measuring result can be provided, and compared with the traditional visual measuring method, the manual error can be reduced, and the measuring accuracy is improved. Thereby providing more accurate and reliable data support for the selection of the subsequent ICL intraocular lens model. Secondly, through setting up and using electron range finding subassembly can also realize automatic measurement, easy and fast to handle, labour saving and time saving, medical personnel then can concentrate on observing and analysis measuring result more. The electronic distance measuring component can also digitally record and store the measurement result, so that a doctor can conveniently track and compare the eye condition of a patient, and further, the follow-up case management is also facilitated. The electronic distance measuring assembly can rapidly and accurately finish measurement, so that the work efficiency of an ophthalmologist can be improved, and the waiting time of a patient is reduced.

Furthermore, the invention is also provided with the level meter, and the level meter can help medical staff to quickly and accurately adjust the position of the instrument, so that the device can be ensured to measure in a horizontal state, and measurement errors caused by improper operation of the instrument and other factors are reduced, thereby improving the accuracy and the precision of measurement, namely the reliability of the device.

Drawings

In order to more clearly illustrate the invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic perspective view of a first view of a cornea diameter measuring apparatus provided by the present invention;

FIG. 2 is a schematic perspective view of a second view of the cornea diameter measuring apparatus of the present invention;

FIG. 3 is a side view of a cornea diameter measuring apparatus provided by the present invention;

Fig. 4 is an enlarged view at a in fig. 3;

fig. 5 is a schematic view showing an assembled structure of a second foot and a slide assembly of the cornea diameter measuring apparatus according to the present invention.

Reference numerals:

100: a measuring ruler; 110: a scale; 120: a first sliding portion; 130: a second sliding part; 140: a ball guide group;

200: a first rule body foot; 210: the first toggle piece;

300: a second ruler body foot; 310: a second wave member;

400: a slip assembly; 410: a sliding sleeve; 420: a fastening member; 421: a slider; 422: a limit rod; 423: a threaded rod; 424: a knob;

500: a level gauge;

600: a grip assembly; 610: a connecting piece; 620: a grip; 630: an anti-skid sleeve;

700: an electronic ranging assembly; 710: a displacement detector; 720: and a screen display.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In describing embodiments of the present invention, it should be noted that the terms "first" and "second" are used for clarity in describing the numbering of the product components and do not represent any substantial distinction unless explicitly stated or defined otherwise. The directions of the upper and the lower are all the directions shown in the drawings. The specific meaning of the above terms in the embodiments of the present invention will be understood by those of ordinary skill in the art according to specific circumstances. Furthermore, the meaning of "plurality" is two or more. The specification "and/or" indicates at least one of the connected objects, and the character "/", generally indicates that the associated object is an "or" relationship.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

Fig. 1 illustrates a schematic perspective view of a first view angle according to an embodiment of the present invention; fig. 2 illustrates a schematic perspective view of a second view of a cornea diameter measuring apparatus according to an embodiment of the present invention.

The invention provides a cornea diameter measuring device, which comprises a measuring scale 100, a first scale body foot 200, a second scale body foot 300 and an electronic distance measuring assembly 700. The measuring ruler 100 is provided with a level meter 500, and the level meter 500 is used for measuring the level of the measuring ruler 100; the first ruler body foot 200 is fixedly arranged on the first side of the measuring ruler 100; the second ruler body foot 300 is movably arranged on the first side of the measuring ruler 100 and is parallel to the first ruler body foot 200; the electronic distance measuring assembly 700 is disposed on the first rule body leg 200 or the second rule body leg 300, and is used for detecting a distance between the first rule body leg 200 and the second rule body leg 300.

In the above structure, the electronic distance measuring assembly 700 is arranged on the first ruler body foot 200 and the second ruler body foot 300, so that the arrangement mode can provide more accurate measuring results, and compared with the traditional visual measuring method, the manual error can be reduced, and the measuring accuracy is improved. Thereby providing more accurate and reliable data support for the selection of the subsequent ICL intraocular lens model. Secondly, through setting up and using electronic range finding subassembly 700 can also realize automatic measurement, easy and fast to handle, labour saving and time saving, medical personnel then can concentrate on observing and analysis measuring result more. The electronic ranging assembly 700 may also digitally record and store the measurement results, facilitating the doctor to track and compare the patient's eye condition, as well as facilitate subsequent case management. The electronic ranging assembly 700 can quickly and accurately complete the measurement, thereby improving the work efficiency of the ophthalmologist and reducing the waiting time of the patient.

In addition, the level meter 500 is further arranged in the structure, and the level meter 500 can help medical staff to quickly and accurately adjust the position of the instrument, so that the device can be ensured to measure in a horizontal state, measurement errors caused by improper operation of the instrument and other factors are reduced, and therefore the accuracy and the precision of measurement are improved, namely the reliability of the device is improved.

When the device is used, a patient lies horizontally, the device is adjusted to be in a horizontal state by observing the level meter 500, the second ruler body foot 300 is slid, one independent side surface of the first ruler body foot 200 and one independent side surface of the second ruler body foot 300 are respectively positioned at the edge part of the eyeball of the patient, and then the measurement data of the electronic distance measuring assembly 700 are read, wherein the data are the diameters of the eyeballs. The whole process is convenient and simple, the data is reliable, and the working efficiency of medical staff is greatly improved.

Specifically, the measuring scale 100 has an elongated plate-like structure, and the first and second scale legs 200 and 300 have elongated plate-like structures. And the first ruler body foot 200 and the second ruler body foot 300 are perpendicular to the measuring ruler 100, and the second ruler body foot 300 can slide along the length direction of the measuring ruler 100, and the second ruler body foot 300 slides along the length direction of the measuring ruler 100 so as to adjust the distance between the first ruler body foot 200 and the second ruler body foot 300, so that the diameter of an eyeball is measured.

It should be noted that, the opposite surfaces of the first rule body leg 200 and the second rule body leg 300 are perpendicular to the surface of the measuring rule 100, so that the measured data is more accurate. The first and second blade legs 200 and 300 each extend along the width direction of the measuring blade 100, and portions of the first and second blade legs 200 and 300 extend outside the measuring blade 100 such that a space therebetween is used to provide a space for measuring an eyeball. The first rule body 200 may be fixed to the measuring rule 100 by welding, such as a bolt, or may be integrally formed with the measuring rule 100. The level 500 may be disposed intermediate the first side of the measuring scale 100, specifically, embedded within the measuring scale 100, to prevent it from protruding beyond the first side surface of the measuring scale 100 and obstructing the sliding of the second scale body foot 300. The level 500 is provided with a transparent material such as glass on the outer surface thereof, so that the level of the liquid therein can be easily observed. The liquid in level 500 may be of a color that contrasts with the color of measuring scale 100, which may provide a better view of the level of the liquid in the interior.

In order to prevent the first and second blade feet 200, 300 from injuring the eyes of the patient during the measurement, the first and second blade feet 200, 300 may be made of soft materials, such as silica gel. Or at least the portions of the first and second blade legs 200, 300 extending outside the measuring blade 100 are made of silicone. The measuring scale 100 needs a certain supporting function, and does not need to be in direct contact with the eyeball of a patient in the using process, so that the measuring scale can be made of hard materials, and particularly can be made of metals such as aluminum alloy.

FIG. 3 illustrates a side view of a cornea diameter measurement apparatus provided in accordance with an embodiment of the present invention; FIG. 4 illustrates an enlarged view at A in FIG. 3; fig. 5 illustrates a schematic diagram of an assembled structure of a second blade and glide assembly of a cornea diameter measuring apparatus according to an embodiment of the present invention.

Referring to fig. 3-5, in some embodiments of the present invention, the second blade foot 300 is slidably disposed on the measuring scale 100 by a slip assembly 400, the slip assembly 400 comprising a slip kit 410 and a fastening member 420. The sliding sleeve 410 is slidably disposed on the measuring scale 100, and the second scale body leg 300 is disposed on one side of the sliding sleeve 410; the fastening part 420 is provided on the sliding sleeve 410 for switching between a first state and a second state, wherein the sliding sleeve 410 and the measuring scale 100 are limited mutually in the first state; in the second state, the fastening member 420 releases the restriction between the sliding sleeve 410 and the measuring scale 100.

By providing the slip assembly 400, the second blade foot 300 may be slidably coupled to the measuring blade 100 and the position of the second blade foot 300 on the measuring blade 100 may be adjusted by the fastening member 420. In the first state described above, the mutual limitation of the sliding sleeve 410 and the measuring scale 100 can be understood as: when the fastening member 420 is adjusted to the first state, the fastening member 420 fixes the sliding sleeve 410 to the measuring scale 100 and also fixes the second scale body foot 300 to the measuring scale 100 at the same time, so that the relative positions of the second scale body foot 300 and the measuring scale 100 are not changed any more. Therefore, when the position of the second ruler body foot 300 is adjusted, the position of the second ruler body foot 300 can be fixed through the fastening component 420, and further, the second ruler body foot 300 is prevented from being out of position when the device is moved, so that data during measurement and data during recording are not corresponding, and errors of the data are caused. When the patient needs to be measured, the fastening component 420 can be adjusted to the second state, so that the sliding sleeve 410 and the measuring ruler 100 are released from the limit, that is, the sliding sleeve 410 can drive the second ruler body foot 300 to slide on the measuring ruler 100, thereby realizing the measuring function.

Referring to fig. 3 and 4, in detail, the sliding kit 410 includes a main body and two sliding grooves fixedly provided at upper and lower ends of the main body, respectively. The main body and the two sliding grooves may be integrally formed, wherein the second rule body leg 300 is fixedly connected to the side surface of the main body, and the two sliding grooves are respectively slidably connected to the upper side and the lower side of the measuring rule 100. In order to reduce friction between the sliding groove and the second blade 300, the portion of the sliding groove that contacts the second blade 300 may be made of a material that is wear resistant and has a low coefficient of friction, or may be smoothed on the surface that contacts the two.

Referring to fig. 4, in some embodiments of the present invention, the fastening part 420 includes a slider 421 and a threaded rod 423. The threaded rod 423 penetrates the sliding sleeve 410 and is screwed with the sliding sleeve 410; the threaded rod 423 is rotated to switch the fastening part 420 between the first state and the second state; the sliding member 421 is rotatably disposed at one end of the threaded rod 423 toward the first sliding portion 120; in the first state, the slider 421 is in contact with the first slider 120, and in the second state, a gap is formed between the slider 421 and the first slider 120. Specifically, four limit rods 422 are further fixedly disposed on the sliding member 421, and the four limit rods 422 penetrate through the sliding wiper top end of the sliding sleeve 410 and are slidably connected therewith. To facilitate rotation of the threaded rod 423, a knob 424 may be provided on the threaded rod 423.

In the above-mentioned structure, when the sliding sleeve 410 and the measuring scale 100 need to be limited, the knob 424 can be rotated, the knob 424 drives the threaded rod 423 to rotate, and then the sliding piece 421 moves downwards, the sliding piece 421 is abutted against the measuring scale 100, and along with screwing, the sliding piece 421 is tightly attached to the measuring scale 100, so that the sliding sleeve 410 cannot move relative to the measuring scale 100, namely, the distance between the first scale body foot 200 and the second scale body foot 300 is also a fixed value, and the numerical value of the distance between the first scale body foot 200 and the second scale body foot 300 cannot be affected when the device is moved. When the distance between the first rule body foot 200 and the second rule body foot 300 needs to be measured, the knob 424 can be turned in the opposite direction, the knob 424 drives the threaded rod 423 to turn in the opposite direction, and then drives the sliding piece 421 to move in the direction away from the measuring rule 100, so that the sliding piece 421 and the measuring rule 100 fall off, and the sliding sleeve 410 can slide on the measuring rule 100 at this time.

Referring to fig. 4, in some embodiments of the present invention, the measuring scale 100 includes a first slip portion 120 and a second slip portion 130; the first sliding portion 120 and the second sliding portion 130 are disposed on the upper and lower sides of the measuring scale 100 in a one-to-one correspondence, and the upper and lower ends of the sliding sleeve 410 are slidably connected to the first sliding portion 120 and the second sliding portion 130, respectively.

Specifically, the first sliding portion 120 and the second sliding portion 130 are arc-shaped protruding structures, and the first sliding portion 120 and the second sliding portion 130 are arc-shaped protruding structures, so that contact areas between the first sliding portion 120 and the second sliding portion 130 and other components can be reduced, friction force is reduced, and service life is prolonged. Meanwhile, due to the reduction of the contact area, the phenomenon that the two are stuck during the sliding process can be reduced, thereby making the sliding of the first sliding portion 120 smoother. Because when limiting the sliding sleeve 410 and the measuring scale 100, the sliding piece 421 and the first sliding portion 120 are abutted, in order to make the sliding piece 421 and the first sliding portion 120 firmer during limiting, a groove matched with the radian of the first sliding portion 120 can be formed on one side of the sliding piece 421 close to the first sliding portion 120, so that the contact area of the sliding piece 421 and the first sliding portion is larger during abutting, and the limiting is firmer.

Referring to fig. 2, in some embodiments of the invention, the second side of the measuring scale 100 is provided with a ball guide set 140, and a sliding sleeve 410 is slidably coupled to the ball guide set 140.

The second side of the measuring scale 100 refers to the opposite side of the measuring scale 100 from the first side. I.e. the back of the first side. The ball guide groups 140 are provided in two groups, and the two ball guide groups 140 are respectively provided at upper and lower edge portions of the second side of the measuring scale 100. More specifically, the ball guide groups 140 are respectively in contact with the inner walls of the two sliding grooves of the sliding sleeve 410, so that the sliding grooves move along the length direction of the ball guide groups 140 during sliding. The ball guide set 140 is formed by a plurality of balls, which are sequentially spaced along the length direction of the measuring scale 100, and each ball is rotatably disposed on the measuring scale 100. During the process of moving the sliding sleeve 410, since the sliding sleeve 410 is in contact with each ball, the sliding sleeve 410 can slide on the ball guide set 140, and each ball can roll, so that the friction between the sliding sleeve 410 and the measuring scale 100 can be greatly reduced, and the sliding sleeve 410 can be adjusted more smoothly.

Referring to FIG. 1, in some embodiments of the invention, an electronic ranging assembly 700 includes a displacement detector 710 and a screen 720. The displacement detector 710 is disposed on the second rule body foot 300 and is used for detecting the distance between the measuring rule 100 and the second rule body foot 300; the display 720 is provided on the first side of the measuring scale 100 and is electrically connected to the displacement detector 710 to display the detection data of the displacement detector 710. Specifically, the displacement detector 710 is fixedly mounted on the top end of the second blade 300 and disposed toward the first blade 200,

The displacement detector 710 may be a resistive displacement sensor, an optical displacement sensor, or a laser displacement sensor, in particular. When the displacement detector 710 is an optical displacement sensor, it includes a light source, a photodetector, and a signal processing circuit. The light source is arranged on the second ruler body foot 300 or the first ruler body foot 200, when the second ruler body foot 300 moves, the light source irradiates on the surface of the first ruler body foot 200, and is received by the photoelectric detector after being reflected or transmitted. The change in the received light signal is measured to determine the displacement of the second blade foot 300. The displacement detector 710 transmits the displacement signal to the screen display 720 for display, thereby facilitating the reading by the staff.

Referring to fig. 1, in some embodiments of the present invention, the first blade 200 is provided with a first striking member 210, the second blade 300 is provided with a second striking member 310, and the first striking member 210 and the second striking member 310 are located on the same horizontal plane.

When the second rule body foot 300 is specifically adjusted, the first stirring piece 210 can be contacted with one finger, the other finger is released from the second fluctuation piece 310, and the first stirring piece 210 is used as a supporting point, so that the second fluctuation piece 310 can be more conveniently stirred, and the movement of the second rule body foot 300 is further controlled. In some possible embodiments, the positions of the first toggle member 210 and the second wave member 310 may be disposed near the horizontal center line of the measuring scale 100, which may allow for a more even force on the sliding sleeve 410, thereby allowing for a smoother sliding of the sliding sleeve 410.

Referring to fig. 1, in some embodiments of the invention, the first side of the measuring scale 100 is further provided with a scale 110, a side of the first scale body foot 200 opposite to the second scale body foot 300 is aligned with an initial scale of the scale 110, and the scale 110 is used to measure the distance between the first scale body foot 200 and the second scale body foot 300. When the electronic ranging assembly 700 fails and is not properly used, the diameter of the eyeball may be measured temporarily through the scale 110. The opposite side of the first ruler body foot 200 and the second ruler body foot 300 are aligned with the 0 scale mark of the scale 110, so that the degree of coincidence between the opposite side of the second ruler body foot 300 and the first ruler body foot 200 and the measuring ruler 100 can be directly read, and the degree is the diameter of the eyeball.

Referring to fig. 1, in some embodiments of the invention, the corneal diameter measuring device further comprises a grip assembly 600, the grip assembly 600 being provided on a second side of the measuring scale 100, the grip assembly 600 comprising a connector 610 and a grip 620. The first end of the connector 610 is connected to the measuring scale 100; the grip 620 is coupled to a second end of the connector 610. An anti-slip sleeve 630 is provided on the outside of the grip 620.

The connecting member 610 has a U-shaped structure, and a recess area is formed in the middle of the connecting member 610, so that when the fastening member 420 moves to the connecting member 610, the recess area can provide space for the operation of a worker, thereby facilitating the operation of the worker.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A corneal diameter measurement device, comprising:

A measuring scale (100) provided with a level meter (500), wherein the level meter (500) is used for measuring the level of the measuring scale (100);

a first ruler body foot (200) fixedly arranged on a first side of the measuring ruler (100);

The second ruler body foot (300) is movably arranged on the first side of the measuring ruler (100) and is parallel to the first ruler body foot (200);

and the electronic distance measuring assembly (700) is arranged on the first ruler body foot (200) or the second ruler body foot (300) and is used for detecting the distance between the first ruler body foot (200) and the second ruler body foot (300).

2. The cornea diameter measurement apparatus of claim 1, wherein the second ruler body foot (300) is slidably disposed to the measurement ruler (100) by a slip assembly (400), the slip assembly (400) comprising:

The sliding sleeve (410) is arranged on the measuring ruler (100) in a sliding manner, and the second ruler body foot (300) is arranged on one side of the sliding sleeve (410);

A fastening member (420) provided on the sliding sleeve (410) for switching between a first state in which the sliding sleeve (410) and the measuring scale (100) are mutually limited and a second state; in the second state, the fastening member (420) releases the limit between the sliding sleeve (410) and the measuring scale (100).

3. The cornea diameter measurement apparatus of claim 2, wherein the fastening member (420) comprises:

-a threaded rod (423), the threaded rod (423) extending through the sliding sleeve (410) and being in threaded connection with the sliding sleeve (410); -said threaded rod (423) being rotated to switch said fastening member (420) between said first and second conditions;

A sliding part (421) rotatably arranged at one end of the threaded rod (423) facing the measuring ruler (100); in the first state, the slider (421) is in contact with the measuring scale (100), and in the second state, a gap is formed between the slider (421) and the measuring scale (100).

4. A cornea diameter measuring apparatus according to claim 3, characterized in that the measuring scale (100) comprises a first sliding portion (120) and a second sliding portion (130);

The first sliding parts (120) and the second sliding parts (130) are arranged on the upper side and the lower side of the measuring ruler (100) in a one-to-one correspondence mode, and the upper end and the lower end of the sliding sleeve (410) are respectively connected with the first sliding parts (120) and the second sliding parts (130) in a sliding mode.

5. The cornea diameter measuring apparatus according to claim 3 or 4, characterized in that the second side of the measuring scale (100) is provided with a ball guide set (140), the sliding sleeve (410) being in sliding connection with the ball guide set (140).

6. The cornea diameter measurement apparatus of any one of claims 1-4, wherein the electronic ranging assembly (700) comprises:

A displacement detector (710) provided to the second blade (300) for detecting a distance between the measuring blade (100) and the second blade (300);

and a screen display (720) which is arranged on the first side of the measuring ruler (100), is electrically connected with the displacement detector (710) and is used for displaying detection data of the displacement detector (710).

7. The cornea diameter measurement apparatus according to claim 6, wherein the first ruler body foot (200) is provided with a first stirring member (210), the second ruler body foot (300) is provided with a second fluctuation member (310), and the first stirring member (210) and the second fluctuation member (310) are located on the same horizontal plane.

8. The cornea diameter measuring apparatus according to any of claims 1-4, characterized in that the first side of the measuring scale (100) is further provided with a scale (110), a side of the first scale body foot (200) opposite to the second scale body foot (300) being arranged in alignment with an initial scale of the scale (110), the scale (110) being adapted to measure the distance between the first scale body foot (200) and the second scale body foot (300).

9. The cornea diameter measurement apparatus of any one of claims 1 to 4, further comprising a grip assembly (600), the grip assembly (600) being provided on a second side of the measuring scale (100), the grip assembly (600) comprising:

A connecting piece (610), the first end of which is connected with the measuring scale (100);

And a grip (620) coupled to the second end of the connector (610).

10. The cornea diameter measurement apparatus of claim 9, wherein the grip (620) is externally provided with an anti-slip sleeve (630).