Ophthalmic diagnostic apparatus

Abstract

The invention discloses ophthalmic diagnosis equipment, and relates to the technical field of medical instruments.The ophthalmic diagnosis equipment comprises a main body, a Praxiso disc and a protective structure, the main body comprises a base and a diagnosis part, the base is used for being held by the hand, the diagnosis part is arranged on the base and used for detecting the eyes of a patient, and the Praxiso disc is movably installed on the diagnosis part; the protective structure comprises a protective cover, a connecting piece and a clamping assembly, the connecting piece is arranged on the diagnosis part and extends around the peripheral side of the Praxiso plate, the protective cover covers the Praxiso plate and is connected with the connecting piece, the clamping assembly comprises a clamping piece, and the clamping piece is movably arranged on the connecting piece, is inserted into the protective cover and is used for limiting the protective cover to be separated from the connecting piece. And through an integrated protection structure and an anti-falling design, the problem that the Praxiso plate is easily polluted and scratched in clinical operation is systematically solved, and the stability of a detection process and the accuracy of data are ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to an ophthalmic diagnostic device. BACKGROUND

[0002] There is a huge demand for the diagnosis of dry eye in clinical practice. The existing methods for checking dry eye generally include two types: contact type and non-contact type. The contact method generally refers to the tear film secretion test method, which requires placing test paper into the conjunctival sac of the eye, which can cause discomfort to the tested person, and this method is often not suitable for people with other eye diseases. The non-contact inspection method often uses professional instruments, such as dry eye inspection instruments based on a slit lamp or dry eye inspection instruments based on a Pascutio disc, to test or take pictures of the patient's eyes for analysis.

[0003] Most Pascutio discs of the devices are designed with a semi-exposed or simple dust cover, which can easily contact the patient's eye secretions, eyelash debris or environmental dust during clinical operation, resulting in contamination of the optical surface. At the same time, during the movement or storage of the device, there is a lack of effective anti-collision protection, which can easily cause scratches on the surface of the Pascutio disc, directly reducing the accuracy of the detection data, and also delaying the diagnosis and treatment process due to frequent shutdown for cleaning or replacement of parts. SUMMARY

[0004] The main purpose of the present application is to provide an ophthalmic diagnostic device which can conveniently protect the Pascutio disc and prevent foreign matter from falling on the Pascutio disc.

[0005] To achieve the above-mentioned purpose, the ophthalmic diagnostic device provided by the present application comprises: a main body comprising a base and a diagnostic part, the base being used for hand holding, and the diagnostic part being arranged on the base and used for detecting the patient's eye; a Pascutio disc movably mounted on the diagnostic part; a protection structure comprising a protective cover, a connecting piece and a clamping assembly, the connecting piece being arranged on the diagnostic part and extending around the side of the Pascutio disc, the protective cover covering the Pascutio disc and being connected with the connecting piece, and the clamping assembly comprising a clamping piece movably arranged in the connecting piece and inserted into the protective cover, and used for limiting the protective cover from being separated from the connecting piece.

[0006] Preferably, the clamping assembly further comprises a first elastic piece, one end of the first elastic piece being arranged in the connecting piece and the other end being connected with the clamping piece. The end of the clamping piece away from the first elastic piece is arc-shaped.

[0007] Preferably, a sealing piece is arranged between the protective cover and the connecting piece.

[0008] Preferably, a cleaning structure is arranged on the protective cover, the protective cover is provided with a movable slot, and the cleaning structure comprises: A sponge block is arranged between the protective cover and the Prasidio disc. A connecting block is arranged in the movable slot and connected with the sponge block to push the sponge block to move.

[0009] Preferably, a shielding plate is clamped on the connecting block and covers the movable slot.

[0010] Preferably, a connecting rod is arranged on the shielding plate and is threadedly connected with the connecting block.

[0011] Preferably, a mounting piece is arranged on the Prasidio disc and is threadedly connected with the diagnostic part.

[0012] Preferably, two fixing seats are arranged on the base, auxiliary rods are threadedly connected in the two fixing seats, and the auxiliary rods are threadedly connected to the outer circumferential side of the Prasidio disc.

[0013] Preferably, a telescopic rod is arranged on the base, an abutting plate is rotationally connected to the end of the telescopic rod away from the base, and a flexible pad is arranged on the abutting plate.

[0014] Preferably, the telescopic rod comprises a fixed rod and a movable rod, the fixed rod is arranged on the base, and the movable rod is threadedly connected with the fixed rod.

[0015] In the technical scheme, the protective structure comprises a protective cover, a connecting piece and a clamping assembly, the connecting piece is arranged on the diagnostic part and extends around the circumferential side of the Prasidio disc, the protective cover covers the Prasidio disc and is connected with the connecting piece, and the clamping assembly comprises a clamping piece, the clamping piece is movably arranged on the connecting piece and is inserted into the protective cover to limit the protective cover from being separated from the connecting piece, the integrated protective structure and the anti-falling design systematically solve the problems that the Prasidio disc is easily contaminated and scratched in clinical operation, and ensure the stability of the detection process and the accuracy of the data. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the drawings shown.

[0017] Figure 1A perspective view of an embodiment of the ophthalmic diagnostic device provided by the present application; Figure 2 A perspective view of an embodiment of the ophthalmic diagnostic device provided by the present application; Figure 1 A perspective view of an embodiment of the ophthalmic diagnostic device provided by the present application; Figure 3 A perspective view of an embodiment of the ophthalmic diagnostic device provided by the present application; Figure 1 A perspective view of an embodiment of the ophthalmic diagnostic device provided by the present application; Figure 4 A perspective view of an embodiment of the ophthalmic diagnostic device provided by the present application; Figure 3 A perspective view of an embodiment of the ophthalmic diagnostic device provided by the present application; Figure 5 A perspective view of an embodiment of the ophthalmic diagnostic device provided by the present application; Figure 1 A perspective view of an embodiment of the ophthalmic diagnostic device provided by the present application.

[0018] BRIEF DESCRIPTION OF THE DRAWINGS 100, ophthalmic diagnostic device; 1, main body; 101, diagnostic part; 102, base; 2, protective structure; 201, connecting piece; 202, protective cover; 203, clamping assembly; 2031, first elastic piece; 2032, clamping piece; 3, telescopic rod; 301, movable rod; 302, fixed rod; 4, auxiliary rod; 5, Praxinos disk; 6, abutting plate; 7, fixing seat; 8, mounting piece; 9, cleaning structure; 901, sponge block; 902, connecting block; 903, shielding plate; 904, connecting rod.

[0019] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0021] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between the components in a certain posture (as shown in the drawings). If the certain posture changes, the directional indications also change accordingly.

[0022] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor in the protection scope required by the present application.

[0023] The present application provides an ophthalmic diagnostic device, Figures 1 to 5 An embodiment of the ophthalmic diagnostic device provided by the present application.

[0024] In the conventional dry eye diagnosis process, the exposed design of the Placido disc 5 causes the optical surface to be easily disturbed by the external environment. Specifically, since the Placido disc 5 adopts a semi-exposed or simple dust cover structure, it cannot effectively isolate the invasion of eye secretions, eyelash debris and environmental dust in clinical operation; at the same time, the device lacks rigid protection mechanism during moving or storage stage, so that the surface of the disc body is easy to be mechanically scratched. Such pollution and damage directly cause systematic deviation of optical detection data, thereby reducing the reliability of tear film stability analysis, increasing the maintenance frequency of the device, and ultimately affecting the continuity of the diagnosis and treatment process.

[0025] Please refer to Figures 1 to 2 , the ophthalmic diagnostic device 100 comprises a main body 1, a Placido disc 5 and a protection structure 2, wherein the main body 1 comprises a base 102 and a diagnostic part 101, the base 102 is used for hand holding, the diagnostic part 101 is arranged on the base 102 and is used for detecting the eye of a patient, the Placido disc 5 is movably arranged on the diagnostic part 101, the protection structure 2 comprises a protection cover 202, a connecting piece 201 and a clamping assembly 203, the connecting piece 201 is arranged on the diagnostic part 101 and extends around the side of the Placido disc 5, the protection cover 202 covers the Placido disc 5 and is connected with the connecting piece 201, and the clamping assembly 203 comprises a clamping piece 2032, the clamping piece 2032 is movably arranged on the connecting piece 201 and is inserted into the protection cover 202, and is used for limiting the protection cover 202 from being separated from the connecting piece 201.

[0026] The clamping part 2032 in the protection structure 2 is movably arranged in the connecting part 201 and inserted into the protective cover 202. In actual application, the clamping part 2032 refers to a mechanical part for limiting the protective cover 202 from separating from the connecting part 201, which can adopt a manual knob, a magnetic device or a buckle type design to achieve, for example, by rotating the threaded connecting part 201 to be fixed, or using magnetic adsorption force to keep the position of the protective cover 202, which is mainly to achieve the purpose of limiting the protective cover 202 from separating from the connecting part 201. Further, the connecting part 201 is arranged around the periphery of the Prassidio disc 5 and can be composed of an annular support or a multi-section connecting strip to provide support. Therefore, the protective cover 202 can completely cover the Prassidio disc 5 to isolate the invasion of eye secretions, eyelash debris and dust.

[0027] The device realizes systematic protection of the Prassidio disc 5 through the cooperative design of the integrated main body 1, the Prassidio disc 5, the protection structure 2 and the anti-falling part. The main body 1 is composed of a base 102 and a diagnostic part 101. The base 102 is convenient for hand holding and operation. The diagnostic part 101 is fixed to the upper end of the base 102 and is used for eye detection of patients to provide a stable support basis for the device. The Prassidio disc 5 is movably arranged in the diagnostic part 101 and allows flexible adjustment of the angle according to the position of the patient's eye, but needs to be avoided from being directly exposed to the external environment. The protection structure 2 includes a protective cover 202, a connecting part 201 and a clamping assembly 203. The connecting part 201 is arranged around the periphery of the diagnostic part 101 and extends around the periphery of the Prassidio disc 5 to form an annular layout. The protective cover 202 is arranged outside the Prassidio disc 5 and connected with the connecting part 201 to form a complete physical barrier. The clamping part 2032 of the clamping assembly 203 is movably arranged inside the connecting part 201 and inserted into the positioning structure of the protective cover 202 to limit the protective cover 202 from separating from the connecting part 201 during operation or movement of the device.

[0028] The annular matching design of the protective cover 202 and the connecting piece 201 effectively isolates the pollution of the optical surface of the Placido disc 5 by the eye secretions, eyelash debris and environmental dust, and avoids the detection distortion caused by the attachment of pollutants. The movable plug-in mechanism of the clamping piece 2032 ensures that the protective cover 202 remains firmly connected during clinical operation vibration or equipment transportation, preventing the protective cover from being ineffective due to shaking. Further, the anti-falling piece disperses the falling impact force by being sleeved on the hand, significantly reducing the risk of physical damage to the Placido disc 5 when the equipment accidentally falls. As a preferred embodiment, the connecting piece 201 can be a ring-shaped stainless steel support fixed to the outer periphery of the diagnostic part 101 by threads; the protective cover 202 can be a transparent cover body made of polycarbonate material, the edge of which is matched and connected with the annular slot of the connecting piece 201; the clamping piece 2032 can be an elastic plastic buckle, which is movably embedded in the sliding groove of the connecting piece 201 and is plugged into the groove on the inner wall of the protective cover 202 to achieve quick locking. For example, in actual operation, when the protective cover 202 completely covers the Placido disc 5, the clamping piece 2032 is automatically ejected and embedded in the groove of the protective cover 202 under the action of elastic force, forming reliable limiting to ensure the functional integrity of the protective structure 2 during frequent disassembly and assembly Therefore, in the technical scheme provided by the present application, the protective structure 2 includes a protective cover 202, a connecting piece 201, and a clamping assembly 203. The connecting piece 201 is arranged on the diagnostic part 101 and extends around the side of the Placido disc 5. The protective cover 202 covers the Placido disc 5 and is connected with the connecting piece 201. The clamping assembly 203 includes a clamping piece 2032, which is movably arranged on the connecting piece 201 and plugged into the protective cover 202 to limit the protective cover 202 from being separated from the connecting piece 201. By integrating the protective structure 2 and the anti-falling design, the problem of the Placido disc 5 being easily contaminated and scratched during clinical operation is systematically solved, ensuring the stability of the detection process and the accuracy of the data.

[0029] For reference Figures 3 to 5 In its implementation process, the clamping piece 2032 lacks an elastic buffering mechanism, which makes the operation of fixing the protective cover 202 laborious and prone to loosening, and the clamping piece 2032 needs to be forcibly pulled out when disassembled, which not only increases the risk of accidental falling of the equipment, but also easily scratches the optical surface of the Placido disc 5 or the fingers of the operator due to the sharp end of the clamping piece 2032, affecting the service life of the equipment and the safety of clinical operation. In order to effectively prevent the scratching damage of the clamping piece 2032 to the optical surface of the Placido disc 5 and the scratching of the fingers of the operator, and improve the reliability of the equipment in frequent use scenarios and the safety of clinical operation.

[0030] Specifically, the clamping assembly 203 in the embodiment of the present application further comprises a first elastic member 2031, one end of which is arranged in the connecting member 201, and the other end is connected with the clamping member 2032; and the end of the clamping member 2032 away from the first elastic member 2031 is arc-shaped.

[0031] The first elastic member 2031 refers to a component providing elastic restoring force, which can be realized by a spiral spring, elastic rubber or metal elastic sheet, and the purpose is to buffer the impact force in the operation process through elastic deformation, so as to ensure that the clamping member 2032 realizes smooth rebound when being installed and disassembled; wherein the arc-shaped end of the clamping member 2032 can be understood as the design that the end profile is a continuous smooth curve, which can be specifically a circular arc, an ellipse or a parabola, and the purpose is to eliminate the stress concentration point of the traditional right-angle design, to make the contact surface transition gentle, and to reduce the friction resistance and local pressure in the operation.

[0032] Through the structural cooperation of the first elastic member 2031 and the clamping member 2032, when the protective cover 202 is installed, the clamping member 2032 is compressed to the inside of the connecting member 201 under the action of external force, the first elastic member 2031 is deformed and stores energy, and when the protective cover 202 is pushed to the predetermined position, the first elastic member 2031 releases the energy to drive the clamping member 2032 to automatically clamp into the slot of the protective cover 202 to realize fixation; when disassembled, only the first elastic member 2031 needs to be compressed again by pressing the clamping member 2032, and the clamping member 2032 is separated from the slot, so that the protective cover 202 can be smoothly removed. The arc-shaped end of the clamping member 2032 forms a point-surface contact with the edge of the protective cover 202 throughout the operation, avoiding direct scratching by sharp edges, thereby solving the problems of laborious operation, easy loosening and scratching hazards.

[0033] As a specific embodiment: the first elastic member 2031 is specifically a spiral compression spring, one end of which is embedded in a positioning groove in the inside of the connecting member 201, and the other end is fixedly connected with the clamping member 2032 by riveting; the clamping member 2032 is made of stainless steel, and the free end thereof is precisely polished to form a semicircular profile. In clinical operation, the medical staff pushes the protective cover 202 to the connecting member 201, the arc-shaped end of the clamping member 2032 guides the edge of the protective cover 202 to smoothly slide into the slot, and the first elastic member 2031 is compressed at the same time; when the protective cover 202 is completely in place, the first elastic member 2031 rebounds to make the clamping member 2032 clamp into the slot to be locked, and when disassembled, only the protective cover 202 needs to be released by pressing the clamping member 2032 with the thumb.

[0034] Further, a sealing member is arranged between the protective cover 202 and the connecting member 201.

[0035] The sealing member refers to an elastic component for filling the interface gap between the protective cover 202 and the connecting member 201, which can be implemented by using a rubber O-ring, a silica gel sealing gasket or a polyurethane sealing strip, aiming to tightly fit the connecting interface and form a continuous physical barrier to block the invasion of pollutants, so as to avoid the generation of potential channels due to assembly tolerance or slight displacement in dynamic use.

[0036] The application also avoids equipment downtime and external tool dependence, effectively prevents secondary pollution and equipment damage risk, and specifically, in the embodiment of the application, the protective cover 202 is provided with a cleaning structure 9, the protective cover 202 is provided with a movable groove, the cleaning structure 9 includes a sponge block 901 and a connecting block 902, the sponge block 901 is arranged between the protective cover 202 and the Prato disc 5, the connecting block 902 is arranged in the movable groove and connected with the sponge block 901 to drive the sponge block 901 to move.

[0037] The cleaning structure 9 refers to a cleaning function unit integrated on the protective cover 202, which can be implemented by using a movable wiping element or an adsorption assembly, aiming to provide instant cleaning capability without disassembling the equipment; the movable groove refers to a guide channel structure formed on the protective cover 202, which can be implemented by using a linear, arc or annular groove, aiming to limit the path range of the cleaning action and ensure the operation stability; the sponge block 901 refers to a flexible material block with porous water absorption characteristics, which can be implemented by using a polyurethane sponge, a microfiber cloth or a silica gel composite material, aiming to adsorb or wipe the pollutants on the optical surface through physical contact; the connecting block 902 refers to a control component for transmitting operating force, which can be implemented by using a push rod type slider, a rotary knob or a press type buckle structure, aiming to convert the external force applied by the user into directional displacement of the sponge block 901.

[0038] Specifically, through the integrated design of the protective cover 202 and the cleaning structure 9, the movable groove restricts the movement trajectory of the connecting block 902, and when the connecting block 902 is pushed by external force, the sponge block 901 is driven to slide controllably along the optical surface of the Prato disc 5. Since the geometry of the movable groove limits the moving direction of the sponge block 901, the user only needs to operate the connecting block 902 to realize the precise coverage of the sponge block 901 in the contaminated area, avoiding scratching the optical surface due to uneven force during the cleaning process; at the same time, the sponge block 901 tightly fits the curved profile of the Prato disc 5, continuously adsorbing eye secretions and eyelash debris during the sliding process, effectively replacing the traditional offline cleaning method which relies on external tools.

[0039] As a specific embodiment: the protective cover 202 is made of transparent polycarbonate material, and a linear movable groove is formed on the outer surface thereof; the sponge block 901 in the cleaning structure 9 is of a rectangular cross-section structure, and is pre-cut into an arc-shaped profile matching the curvature of the Praxair disc 5, and is tightly fitted between the inner side of the protective cover 202 and the Praxair disc 5; the connecting block 902 is designed in a flat and smooth block shape, is embedded in the movable groove and is fixedly connected with the end portion of the sponge block 901, and when the operator horizontally pushes the connecting block 902, the sponge block 901 synchronously performs reciprocating wiping movement on the optical surface of the Praxair disc 5, so as to instantly remove the attached contaminants.

[0040] Further, the connecting block 902 is clamped with a shielding plate 903, and the movable groove is covered.

[0041] The shielding plate 903 refers to a protective component for closing the opening of the movable groove, which can be made of a flexible material such as silica gel or a hard material such as polycarbonate to form a continuous physical barrier layer; the purpose is to directly block the intrusion path of external contaminants to the inside by covering the opening of the movable groove, to ensure the sealing of the movable groove area, and the shielding plate 903 can specifically be a piece of rectangular rubber sheet with moderate thickness and certain elasticity, which is fixed on the outer side surface of the connecting block 902; when the connecting block 902 reciprocally slides in the movable groove, the rubber sheet tightly fits the edge of the groove, and utilizes the elastic deformation of the material to realize dynamic sealing, so as to prevent the contaminants from penetrating from the gap.

[0042] Further, the shielding plate 903 is provided with a connecting rod 904, and the connecting rod 904 is threadedly connected with the connecting block 902.

[0043] The clamping connection of the connecting block 902 and the shielding plate 903 is to facilitate the disassembly of the sponge block 901 for cleaning or replacement, so as to ensure that the sponge block 901 cannot clean the Praxair disc 5 due to too much dust adhered thereto. The connecting block 902 and the shielding plate 903 can still be separated during use after the clamping connection, and therefore the connecting rod 904 is provided to fixedly connect the shielding plate 903 and the connecting block 902 together, so that the shielding plate 903 and the connecting block 902 cannot be separated at will during movement, and the threaded connection facilitates the disassembly of the connecting rod 904, so that the shielding plate 903 and the connecting block 902 can be easily separated to process the sponge block 901.

[0044] In order to significantly reduce the risk of optical surface contamination and scratching caused by accidental displacement during equipment movement or storage, ensure the accuracy of detection data and the long-term availability of the equipment, the Praxidico disc 5 is provided with a mounting part 8, which is threadedly connected with the diagnostic part 101, and is firmly connected by rotating the threaded sleeve into the internal threaded hole. The operator can manually rotate the Praxidico disc 5 to complete the installation or disassembly, which is convenient for daily cleaning and maintenance.

[0045] The mounting part 8 refers to the interface component for realizing the mechanical fixation between the Praxidico disc 5 and the diagnostic part 101, which can adopt a threaded sleeve, an embedded nut or an adjustable support to realize, and its purpose is to provide a standardized connection point to ensure the reliability of the installation; the threaded connection can be understood as a fastening mechanism by the mutual engagement of helical protrusions and grooves, which can specifically adopt a metric thread, an imperial thread or a self-tapping thread structure, and its purpose is to effectively resist external vibration and impact by using the self-locking property and progressive tightening ability of the thread.

[0046] Further, the base 102 is provided with two fixing seats 7, and two auxiliary rods 4 are threadedly connected in the fixing seats 7, and the auxiliary rods 4 are threadedly connected to the outer circumferential side of the Praxidico disc 5.

[0047] The Praxidico disc 5 is threadedly connected with the diagnostic part 101 through the connecting part 201, which is more convenient for replacing a new Praxidico disc 5 to ensure the accuracy of patient examination during equipment use. However, it is time-consuming and laborious to rely only on the hand pressing on the Praxidico disc 5 to rotate and disassemble the Praxidico disc 5, and it may also be difficult to rotate the Praxidico disc 5 due to the smoothness of the Praxidico disc 5 shell, thereby failing to complete the disassembly work. Therefore, the auxiliary rod 4 is provided, the outer circumferential side of the auxiliary rod 4 is provided with threads, and two threaded grooves are formed on the shell of the Praxidico disc 5 for threadedly mounting the auxiliary rod 4, so that the Praxidico disc 5 has a part for holding by hand. The Praxidico disc 5 is rotated and disassembled by holding the auxiliary rod 4 to complete the disassembly work, which improves the disassembly efficiency. At the same time, in order to facilitate the storage of the auxiliary rod 4 and avoid the difficulty in finding the auxiliary rod 4 during subsequent use due to random placement, the fixing seat 7 is arranged on the base 102, so that the auxiliary rod 4 can be connected with the fixing seat 7 when not in use to be installed on the base 102, which is convenient for finding or using during subsequent use.

[0048] When the eyes of the patient are examined and diagnosed, the patient's eyes need to be at a certain distance from the equipment. Usually, medical staff manually adjusts the placement position of the equipment or adjusts the position of the patient according to experience. The patient needs to remain still during the equipment examination to ensure the accuracy of the examination results. However, long-term immobility will cause the patient to be very tired. In order to solve this problem, in the embodiment of the present application, the base 102 is provided with a telescopic rod 3, one end of the telescopic rod 3 away from the base 102 is rotationally connected with an abutting plate 6, and the abutting plate 6 is provided with a flexible pad.

[0049] When the patient is examined, only need to put the chest on the flexible pad on the holding plate 6, then adjust the head posture, ensure the eye is aligned with the Prasidio plate 5, start the equipment to start the examination work.

[0050] Further, the telescopic rod 3 comprises a fixed rod 302 and a movable rod 301, the fixed rod 302 is installed on the base 102, and the movable rod 301 is screw-connected with the fixed rod 302.

[0051] Different patients have different body shapes, so the distance between them and the equipment is also different, so it is necessary to adjust the length of the telescopic rod 3 to change the position of the holding plate 6, so that the patient can be in the appropriate position for detection, when adjusting the length of the telescopic rod 3, rotating the movable rod 301 to make the movable rod 301 extend outward or shrink inward to the fixed rod 302, so that the length of the telescopic rod 3 increases or decreases as a whole, thereby driving the holding plate 6 to move, so that the position of the holding plate 6 changes, thereby changing the distance between the patient and the equipment, and facilitating different patients to be examined.

[0052] The above is only the preferred embodiment of the present application, and does not limit the patent scope of the present application, any equivalent structural transformation made under the concept of the present application, using the content of the present application specification and drawings, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present application.

Claims

1. An ophthalmic diagnostic device, characterized in that, include: The main body includes a base and a diagnostic unit. The base is for holding in the hand, and the diagnostic unit is disposed on the base for detecting the patient's eyes. The plascidus disc is movably mounted on the diagnostic unit. The protective structure includes a protective cover, a connector, and a snap-fit ​​assembly. The connector is disposed on the diagnostic unit and extends around the periphery of the Placido disc. The protective cover covers the Placido disc and is connected to the connector. The snap-fit ​​assembly includes a snap-fit ​​member that is movably disposed on the connector and inserted into the protective cover to prevent the protective cover from detaching from the connector.

2. The ophthalmic diagnostic device as described in claim 1, characterized in that, The snap-fit ​​assembly further includes a first elastic element, one end of which is disposed inside the connector and the other end is connected to the snap-fit ​​element. The end of the snap-fit ​​member furthest from the first elastic member is arc-shaped.

3. The ophthalmic diagnostic device as described in claim 1, characterized in that, A sealing element is provided between the protective cover and the connector.

4. The ophthalmic diagnostic device as described in claim 1, characterized in that, The protective cover is provided with a cleaning structure, and the protective cover has a movable groove. The cleaning structure includes: A sponge block is disposed between the protective cover and the Placido disc; A connecting block is disposed within the movable groove and connected to the sponge block to push the sponge block to move.

5. The ophthalmic diagnostic device as described in claim 4, characterized in that, A shielding plate is snapped onto the connecting block and covers the movable slot.

6. The ophthalmic diagnostic device as described in claim 5, characterized in that, A connecting rod is threaded through the shielding plate and the connecting rod is threadedly connected to the connecting block.

7. The ophthalmic diagnostic device as described in claim 1, characterized in that, The Placid disc is provided with a mounting component, which is threadedly connected to the diagnostic unit.

8. The ophthalmic diagnostic device as described in claim 1, characterized in that, The base is provided with two fixed seats, and each of the two fixed seats is threaded with an auxiliary rod, which is threaded to the outer periphery of the Placido disk.

9. The ophthalmic diagnostic device as described in claim 1, characterized in that, The base is provided with a telescopic rod, and the end of the telescopic rod away from the base is rotatably connected to a support plate, and the support plate is provided with a flexible pad.

10. The ophthalmic diagnostic device as described in claim 9, characterized in that, The telescopic rod includes a fixed rod and a movable rod. The fixed rod is mounted on the base, and the movable rod is threadedly connected to the fixed rod.

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