CN218870264U - Auxiliary device of ocular biometer for measuring peripheral ocular axis by adjusting deflection angle - Google Patents

Abstract

The utility model provides a through the eye biological measuring instrument auxiliary device of peripheral eye axle of adjustment deflection angle measurement, to the whole accurate pivoted problem of being not convenient for of current instrument, through increasing one end arc slide rail and vertical rotating shaft, make the measuring apparatu remove and through vertical rotating shaft luffing motion in order to deflect on the arc slide rail. When the squint angle is determined, the eyeball does not need to be rotated by the patient. The instrument rotation angle is used as an alternative. The squint angle can be directly determined by the rotation of an instrument without using a trigonometric function and calculated by using the side length distance, so that the accuracy of the angle is improved. The patient only needs to watch the place ahead, increases patient's comfort level for it is more swift to measure.

Description

Auxiliary device of ocular biometer for measuring peripheral ocular axis by adjusting deflection angle

technical field

The utility model relates to the technical field of ophthalmic medical instruments, in particular to an ocular biometer auxiliary device for measuring the peripheral eye axis by adjusting the deflection angle.

Background technique

Accurate measurement of eyeball biological parameters has important clinical significance for corneal refractive surgery and calculation of intraocular lens refraction, as well as auxiliary diagnosis of glaucoma and other eye diseases and preoperative and postoperative evaluation. At present, ultrasonic measurement is recognized as a relatively accurate measurement method, but its repeatability and accuracy are affected by different operators' experience and technology to a certain extent. The Lenstar 900 developed by Swiss Haag-Streit Company based on the principle of optical low coherencerlectomety (0LCR) can not only complete the measurement of corneal thickness, anterior chamber depth, lens thickness, eye axis and corneal curvature at one time. Measurement, and at the same time obtain the data of the distance from white to white (WTW) of the cornea, pupil size, optical axis eccentricity and retinal thickness. The advanced optical biometric instrument can measure the K value of patients after LASIK myopia surgery to calculate IOL Power. At the same time, the patient's visual axis length, corneal curvature and anterior chamber depth are accurately measured. It can avoid cross-infection between patients and help doctors achieve extremely accurate postoperative target diopters. However, the current eye biometer can only measure the central eye axis for the eye axis, and cannot measure the peripheral eye axis (the data of the peripheral eye axis is also important for a certain eye axis). It has important clinical significance for auxiliary diagnosis and preoperative and postoperative evaluation of some eye diseases). There are currently no instruments for measuring the axial length of the peripheral eye. Chinese Utility Model Patent Publication CN216962423U discloses a peripheral ocular axial length auxiliary measuring device for an ophthalmic biometer, which requires the subject's eyeballs to squint at a certain angle in the horizontal or vertical direction and fixate on the target. However, since different human eyes measure the central eye axis, the distance from the human eye to the instrument is different, and there is a measurement error when determining this distance. Therefore, there is a corresponding error in the strabismus offset distance. The most important thing is that in the actual measurement, it is found that the eyeballs of the subjects will move when they deviate their gaze, which will cause problems such as inaccurate measurement and longer measurement time.

Utility model content

The embodiment of the utility model provides an auxiliary device of an ocular biometer measuring the peripheral eye axis by adjusting the deflection angle, which is used to solve the problems existing in the prior art.

In order to achieve the above object, the utility model adopts the following technical solutions.

The ocular biometer auxiliary device for measuring the peripheral eye axis by adjusting the deflection angle, including the abutment, the measuring instrument base and the head fixing frame; the measuring instrument base is used to carry the ocular biometer; the head fixing frame is installed on the side of the abutment , and correspond to the ocular biometer.

The head fixing frame includes a frame body, on which a mandibular support is installed; the head fixing frame also has one or two visual target adjustment frames that are movably connected with the frame body and visual targets that are movably connected with the visual target adjustment frame; The adjustment frame can rotate relative to the frame body, and the visual target can rotate relative to the visual target adjustment frame;

There is an arc track on the abutment, the measuring instrument base is connected with the arc track, and can move along the arc track, so that the axis of the ocular biometer and the eye axis of the subject have an included angle;

The abutment also has a vertical rotating shaft, and the abutment is separated by the vertical rotating shaft to form two blocks, the base of the measuring instrument and the arc-shaped track are located in one block, and the head holder is located in the other block; the base of the measuring instrument and the arc-shaped track The block where it is located can swing vertically around the vertical axis of rotation, so that the axis of the eye biometer and the axis of the eye of the subject have an included angle;

The abutment also has an angle display connected to the base of the measuring instrument for displaying the deflection angle of the eye biometric instrument.

Preferably, the base of the measuring instrument has a rotating shaft, and the base of the measuring instrument is connected to the arc track through the rotating shaft, so that the base of the measuring instrument moves along the arc track; the base of the measuring instrument can also rotate relative to the base through the rotating shaft.

Preferably, there is a first linear slide rail on the base of the measuring instrument, and the first straight line extends along the length direction of the base of the measuring instrument. The eye biometer is movably mounted on the first linear slide rail and can slide along the first straight line Rail movement;

There are also two second linear slides on the base of the measuring instrument, which are respectively movably connected to the two ends of the first linear slide and extend along the width direction of the base of the measuring instrument. The first linear slide can move along the second linear slide move.

Preferably, the measuring instrument base also has a positioning pin, and one end of the positioning pin can closely contact the surface of the abutment, preventing the movement of the measuring instrument base.

Preferably, the frame body includes two vertically arranged vertical bars at intervals, and the chin support is installed in the interval area of the vertical bars; the frame body also includes horizontally arranged horizontal bars, and the two ends of the horizontal bar are respectively connected to the top ends of the vertical bars; There are two standard adjusting frames, which are respectively movably connected with the cross bar and the vertical bar.

Preferably, the sight mark adjusting frame includes a first rod body and a second rod body hinged to each other, the first rod body is hinged to the sight mark through one end, and the second rod body is movably connected to the cross bar through one end.

It can be seen from the technical solutions provided by the above-mentioned embodiments of the utility model that the auxiliary device of the ocular biometric instrument for measuring the peripheral eye axis by adjusting the deflection angle provided by the utility model aims at the problem that the existing instruments are not convenient for the overall precise rotation, through An arc slide rail and a vertical shaft are added at one end, so that the measuring instrument moves along the arc slide rail and swings up and down through the vertical shaft for deflection. To determine the angle of strabismus, the patient does not need to move the eye. The instrument rotation angle is used instead. The strabismus angle does not need to use trigonometric functions, but can be calculated by side length and distance, which can be directly determined by the rotation of the instrument to increase the accuracy of the angle. The patient only needs to look forward, increasing the comfort of the patient and making the measurement faster.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and will become apparent from the description, or may be learned by practice of the invention.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention , for those skilled in the art, other drawings can also be obtained according to these drawings on the premise of not paying creative work.

Fig. 1 is the top view of the eye biometer auxiliary device for measuring the peripheral eye axis by adjusting the deflection angle provided by the utility model;

Fig. 2 is a side view of the auxiliary device of the eye biometer measuring the peripheral eye axis by adjusting the deflection angle provided by the utility model;

Fig. 3 is a side view of the eye biometer auxiliary device for measuring the peripheral eye axis by adjusting the deflection angle provided by the utility model, which is used to display another state of the visual mark adjustment frame;

Fig. 4 is the front view of the frame body of the ocular biometer auxiliary device for measuring the peripheral eye axis by adjusting the deflection angle provided by the utility model;

Fig. 5 is a schematic diagram of the visual target of the eye biometer auxiliary device for measuring the peripheral eye axis by adjusting the deflection angle provided by the utility model;

Fig. 6 is a top view of the visual target of the eye biometer auxiliary device for measuring the peripheral eye axis by adjusting the deflection angle provided by the utility model;

Fig. 7 is a side view of the auxiliary device of the ocular biometer measuring the peripheral eye axis by adjusting the deflection angle provided by the utility model, which is used to display the upward deflection state of the instrument;

Fig. 8 is a side view of the auxiliary device of the ocular biometer measuring the peripheral eye axis by adjusting the deflection angle provided by the utility model, which is used to display the state of the instrument deflecting downward;

Fig. 9 is a schematic diagram of the interconnection of the first linear track and the second linear track of the eye biometer auxiliary device for measuring the peripheral eye axis by adjusting the deflection angle provided by the present invention.

In the picture:

1. Abutment 11. Arc track 12. Angle display 13. Vertical shaft;

2. The measuring instrument base 21. The first linear slide rail 211. The gear 22. The positioning pin 23. The rotating shaft 24. The second linear slide rail;

3. Head fixing frame 31. Jaw support 32. Visual standard adjustment frame 321. First rod body 322. Second rod body 33. Frame body 331. Vertical rod 332. Cross bar 34. Visual standard 341. Visual standard lamp 36. Forehead bring;

4. Eye biometer 5. Handle.

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are only used to explain the present invention, and cannot be construed as limiting the present invention.

Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the word "comprising" used in the description of the present utility model refers to the presence of the stated features, integers, steps, operations, elements and/or components, but does not exclude the presence or addition of one or more other features , integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Additionally, "connected" or "coupled" as used herein may include wirelessly connected or coupled. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Those skilled in the art can understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meanings as commonly understood by those of ordinary skill in the art to which the present invention belongs. It should also be understood that terms such as those defined in commonly used dictionaries should be understood to have a meaning consistent with the meaning in the context of the prior art, and will not be interpreted in an idealized or overly formal sense unless defined as herein explain.

In order to facilitate the understanding of the embodiments of the present invention, several specific embodiments will be taken as examples for further explanation below in conjunction with the accompanying drawings, and each embodiment does not constitute a limitation to the embodiments of the present invention.

Referring to FIGS. 1 to 3 , the utility model provides an ocular biometer auxiliary device for measuring the peripheral eye axis by adjusting the deflection angle, including a base 1 , a measuring instrument base 2 and a head holder 3 . The measuring instrument base 2 is used to carry the eye biometric instrument 5 . The head holder 3 is installed on the side of the base 1 so that the subject's eyes correspond to the eye biometer 5 .

The head holder 3 includes a frame body 33, on which the jaw support 31 is installed; The sight marks 34 that are movably connected to the adjusting frame 32 are one-to-one. The sight mark 34 adjustment frame 32 can rotate relative to the frame body 33 , and the sight mark 34 can rotate relative to the sight mark 34 adjustment frame 32 .

There is an arc track 11 on the base platform 1, and the measuring instrument base 2 is connected with the arc track 11, and can move along the arc track 11, so that the axis of the eye biometer 5 and the axis of the eye of the test subject have a level (lateral direction) with each other. ) included angle.

The base 1 also has a vertical shaft 13, the base 1 is separated by the vertical shaft 13 to form two blocks, the measuring instrument base 2 and the arc track 11 are located in one block, and the head holder 3 is located in the other block. The block where the measuring instrument base 2 and the arc track 11 are located can swing vertically around the rotating shaft, so that the axis of the eye biometric instrument 5 and the eye axis of the test subject have a vertical angle with each other. As shown for example in FIGS. 7 and 8 , the abutment 1 is divided into a first block and a second block, which are hinged by a vertical axis 13 . The measuring instrument base 2 and the arc track 11 are located in the first block, and the head holder 3 is located in the second block. During use, fix the second block, swing the first block up and down with the vertical rotating shaft 13 as the axis, and adjust the inclination angle of the eye biometer 5 .

The base 1 also has an angle display 12 connected to the measuring instrument base 2 for displaying the horizontal and/or vertical deflection angle of the eye biometric instrument 5 . In the embodiment provided by the present invention, the angle display 12 adopts a commercially available product, such as PRO360 electronic angle meter, and its connection method can be set with the corresponding commercially available product, which will not be repeated here.

In the embodiment provided by the utility model, the eye biometer 5 adopts models such as lenstar900 and IOLMaster.

The use process of the auxiliary device provided by the utility model is as follows:

The subject first puts the mandible on the chin rest 31 to support the head securely; binocularly emmetropes the red flash point in the eye biometric instrument 5, and the examiner pushes the measuring instrument base 2 to make it move back and forth, left and right along the linear slide rail, and coordinates Operate the joystick 5 of the eye biometer 5 to measure the central eye axis length of the subject's unilateral eye;

Keep the position of the eye biometric instrument 5 still, move the visual mark 34 adjusting frame 32 on the top of the head fixing frame 3 and adjust its position, make the edge of the visual mark 34 coincide with the center of the main lens of the eye biometric instrument 5, open the visual mark 34 The visual mark light 341 on the top, ask the subject to look at the bright light spot of the visual mark 34;

Push the measuring instrument base 2 to move on the arc track 11, the electronic linkage device converts the horizontal deflection angle of the measuring instrument base 2 into an electrical signal and transmits it to the angle display 12, and reads the real-time deflection angle of the measuring instrument through the angle display 12 , fix the positioning pin 22 after reaching the predetermined measurement angle, so that the base is stable.

By manipulating the handle 5, combined with the translation measuring instrument, measuring the peripheral eye axis length of the subject in the horizontal direction;

After the horizontal peripheral eye axis test is completed, restore the instrument to the initial position (measure the central eye axis position), adjust the position of the instrument so that the edge of the visual mark 34 coincides with the center of the main lens of the eye biometer 5, and then maintain the position of the eye biometer 5 Do not move, move the visual mark 34 adjusting frame 32 on the side of the head fixing frame 3 and adjust its position, make the visual mark 34 edge coincide with the center of the main lens of the eye biometer 5, turn on the visual mark light 341 on the visual mark 34 , ask the subjects to look at the 34 bright spots of the visual mark;

The base 1 has a vertical shaft 13, and the block of the base 1 is shifted upward or downward by a certain angle. The electronic linkage device converts the vertical deflection angle of the measuring instrument base 2 into an electrical signal and transmits it to the angle display 12. Through the angle The display 12 reads the real-time deflection angle of the measuring instrument, and fixes the vertical rotating shaft 13 after reaching a predetermined measurement angle, so that the base is stable.

By manipulating the handle 5, combined with the translation measuring instrument, the peripheral eye axis length in the vertical direction of the subject is measured.

In the preferred embodiment provided by the utility model, the arc-shaped slide rail adopts a groove structure, and the bottom of the measuring instrument base 2 has a rotating shaft 23, and the measuring instrument base 2 is connected to the arc-shaped track 11 by inserting the end of the rotating shaft 23, The measuring instrument base 2 can move along the arc track 11. The measuring instrument base 2 can also rotate relative to the base 1 around the rotating shaft 23 to increase the range of motion.

There is a first linear slide rail 21 arranged horizontally on the measuring instrument base 2, and the first straight line is arranged along the length direction of the measuring instrument base 2. The eye biometric instrument 5 is movably installed on the first linear sliding rail 21, and can The first moves along the linear slide rail.

There are also two horizontal second linear slides 24 on the measuring instrument base 2, which are movably connected to the two ends of the first linear slide 21 respectively, and extend along the width direction of the measuring instrument base 2 (that is, the second linear slide 24 vertically arranged with the first linear slide rail 21 ), the first linear slide rail 21 can move along the second linear slide rail 24 . With the above settings, the measuring instrument can be moved back and forth and left and right to adjust the position.

In this embodiment, the linear slide rail adopts an independent raised track structure, and the eye biometer 5 can be provided with a slide groove structure matched with the linear slide rail at the bottom. The second linear slide rail 24 can adopt a semi-embedded rack. As shown in Figure 9, the two ends of the first linear slide rail 21 are respectively provided with gears 211 meshed with the rack, and the gear 211 is connected to the second linear slide rail. Rail 24 articulation.

In the embodiment provided by the present invention, the measuring instrument base 2 also has positioning pins 22 , as shown in FIG. 1 , which are arranged at corners of the measuring instrument base 2 . The positioning pin 22 is installed by drilling a hole in the base 2 of the measuring instrument, and can move in the axial direction of the hole. It can closely contact the surface of the base 1 through the end, hinder the movement of the base 2 of the measuring instrument, and realize the positioning of the base 2 of the measuring instrument. .

In the embodiment provided by the present invention, as shown in FIG. 4 , the frame body 33 adopts a frame structure, including two vertically arranged vertical bars 331 at intervals, and the chin support 31 is installed in the interval area of the vertical bars 331; the frame body 33 It also includes horizontally arranged crossbars, the two ends of which are respectively connected to the tops of the vertical bars 331; the sight mark 34 adjusting frame 32 is movably connected with the crossbars.

Further, the sight mark 34 adjustment frame 32 is a connecting rod structure, which can increase the degree of freedom of the sight mark 34. The sight mark 34 adjustment frame 32 includes a first rod body 321 and a second rod body 322 that are hinged to each other. The first rod body 321 passes through one end Hinged with the visual mark 34, the second rod body 322 is movably connected with the cross bar and the vertical rod 331 by one end (it can be a slide block, so that the second rod body 322 can slide, and there is a spherical joint on the slide block, so that the second rod body 322 The angle can be adjusted arbitrarily). In this embodiment, as shown in Figures 5 and 6, the visual mark 34 is disc-shaped, and the hinge between the visual mark 34 and the first rod body 321 can be arranged through an arc-shaped support, and the two ends of the arc-shaped support arm of the arc-shaped support The middle part of the disc-shaped visual mark 34 is hinged respectively, and the middle part of the arc-shaped support arm has an outstretched short arm, which is hinged with the first rod body 321 through one end. A forehead band 36 can also be set in the upper region of the visual mark 34 adjustment frame 32 for auxiliary support of the forehead.

Furthermore, the edge of the disc-shaped visual mark 34 is raised, which is convenient for the tester to perform visual correction. The optotype light 341 is located at the center of the optotype 34 .

To sum up, the utility model provides an auxiliary device for eye biometers that measures the peripheral eye axis by adjusting the deflection angle. Aiming at the problem that the existing instruments are not easy to rotate accurately as a whole, by adding an arc-shaped slide rail and a vertical shaft at one end, Make the measuring instrument move along the curved slide rail and swing up and down through the vertical shaft to deflect. To determine the angle of strabismus, the patient does not need to move the eye. The instrument rotation angle is used instead. The strabismus angle does not need to use trigonometric functions, but can be calculated by side length and distance, which can be directly determined by the rotation of the instrument to increase the accuracy of the angle. The patient only needs to look forward, increasing the comfort of the patient and making the measurement faster.

Each embodiment in this specification is described in a progressive manner, the same and similar parts of each embodiment can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the device or system embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and for relevant parts, refer to part of the description of the method embodiments. The device and system embodiments described above are only illustrative, and the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, It can be located in one place, or it can be distributed to multiple network elements. Part or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. It can be understood and implemented by those skilled in the art without creative effort.

The above is only a preferred embodiment of the utility model, but the scope of protection of the utility model is not limited thereto, and any person familiar with the technical field can easily think of All changes or replacements should fall within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claims.

Claims (6)

1. The ocular biometer auxiliary device for measuring the peripheral eye axis by adjusting the deflection angle is characterized in that it comprises a base, a measuring instrument base and a head holder; the measuring instrument base is used to carry the ocular biometric instrument; the The head fixing frame is installed on one side of the abutment and corresponds to the eye biometer; The head fixing frame includes a frame body on which a chin support is installed; the head fixing frame also has one or two visual mark adjustment frames that are movably connected with the frame body and are connected with the visual mark adjustment frame. The visual target that is movably connected; the visual target adjustment frame can rotate relative to the frame body, and the visual target can rotate relative to the visual target adjustment frame; There is an arc track on the base platform, the base of the measuring instrument is connected with the arc track, and can move along the arc track, so that the axis of the eye biometer and the axis of the eye of the subject have a clamping relationship with each other. horn; The abutment also has a vertical shaft, the abutment is separated by the vertical shaft to form two blocks, the measuring instrument base and the arc track are located in one block, and the head holder is located in the other block; the block where the base of the measuring instrument and the arc track are located can swing vertically around the vertical axis of rotation, so that the axis of the eye biometer and the axis of the eye of the subject have an included angle; The base station also has an angle display connected to the base of the measuring instrument for displaying the deflection angle of the eye biometric instrument. 2. The auxiliary device of ocular biometer according to claim 1, characterized in that, the bottom of the base of the measuring instrument has a rotating shaft, and the base of the measuring instrument is connected with the arc track through the rotating shaft, so that The measuring instrument base moves along the arc track; the measuring instrument base can also rotate relative to the base platform through the rotating shaft. 3. The auxiliary device of the eye biometer according to claim 1, wherein the base of the measuring instrument has a first linear slide rail, and the first straight line extends along the length direction of the base of the measuring instrument, The eye biometer is movably installed on the first linear slide rail and can move along the first linear slide rail; There are also two second linear slide rails on the base of the measuring instrument, which are movably connected to both ends of the first linear slide rail respectively, and extend along the width direction of the base of the measuring instrument. The first linear slide rails A rail is movable along the second linear slide. 4. The auxiliary device of ocular biometer according to claim 1, wherein the base of the measuring instrument also has a positioning pin, and one end of the positioning pin can closely contact the surface of the abutment, preventing the base of the measuring instrument from Activity. 5. The auxiliary device for ocular biometer according to claim 1, wherein the frame body comprises two vertically arranged vertical bars at intervals, and the chin rest is installed in the spaced area of the vertical bars; The frame body also includes horizontally arranged cross bars, the two ends of which are respectively connected to the top ends of the vertical bars; there are two sight mark adjustment frames, and the two sight mark adjustment frames are respectively connected to the The horizontal bar and the vertical bar are flexibly connected. 6. The auxiliary device of eye biometer according to claim 5, characterized in that, the sight mark adjustment frame comprises a first rod body and a second rod body hinged to each other, and the first rod body connects with the sight mark through one end. The second rod body is movably connected with the cross bar through one end.

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