A slit lamp microscope for ophthalmic screening

Abstract

The application relates to the technical field of ophthalmic examination equipment, and discloses a slit lamp microscope for ophthalmic general examination, which comprises a base, a supporting mechanism arranged above the base and an observation mechanism arranged above the supporting mechanism, the supporting mechanism comprises a sliding table which is slidingly connected to the top of the base, and the top of the sliding table is fixedly connected with a supporting seat; the observation mechanism is arranged, for short people, an operator can check the eyes of a patient through the eyepiece, the extension tube and the vertical opening of the periscope, and the clarity can be improved by rotating the rotating shaft to replace different lenses at the replacement groove; for patients with a higher height, when the periscope is in a vertical opening state, the operator rotates the adjusting shell to change the observation direction of the periscope from the lower side to the upper side, so that the eyes of the patient with a higher height can be checked while the line of sight height of the operator is unchanged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ophthalmic examination equipment, and particularly relates to a slit lamp microscope for ophthalmic general examination. BACKGROUND

[0002] In the diagnosis of ophthalmic diseases, comprehensive and accurate screening is crucial. The slit lamp microscope, as a key device for ophthalmic general examination, emerges as the times require. The microscope uses a slit illumination system and a binocular microscope system to clearly observe the fine structures of the anterior segment and part of the posterior segment of the eye. Through it, doctors can check the health status of cornea, conjunctiva, iris and other tissues, and find various lesions such as inflammation, trauma and degeneration. In ophthalmic screening work, the slit lamp microscope is easy to operate, and the diagnosis is fast and accurate, which greatly improves the early detection rate of ophthalmic diseases and saves valuable time for timely treatment of patients.

[0003] In the patent with the patent number CN118766411A, a slit lamp microscope device for ophthalmic examination is disclosed, which comprises a workbench, an adjusting instrument table, a light source projection system, a microscope and a head fixing mechanism. The adjusting instrument table and the head fixing mechanism are arranged on the workbench. The light source projection system and the microscope are arranged on the adjusting instrument table. A rotating electromagnet is arranged on the microscope support of the adjusting instrument table. An objective lens cover is arranged on the driving end of the rotating electromagnet. The slit lamp switch of the light source projection system and the rotating electromagnet are connected with a controller. The head fixing mechanism comprises two supporting columns, two clamping tension mechanisms and an annular belt. The clamping tension mechanisms are arranged on the supporting columns. The annular belt is arranged on the clamping tension mechanisms. The two clamping tension mechanisms fix the head in left and right directions. Compared with the prior art, the device can be used conveniently, avoids the disadvantages caused by long-term exposure of the microscope objective lens to the outside, and realizes multi-directional fixation of the head.

[0004] The prior art has the following defects:

[0005] Limited height adjustment range of the bracket: the existing device does not fully consider the needs of patients of different heights, and the stroke of the bracket adjustment structure is set too narrow. For people who are too tall, they need to bend over and lower their heads, which can easily make the neck and back muscles tense, and also can not fully display the eyes due to limited posture. For people who are too short, they need to lift their heads, which not only causes neck fatigue, but also affects the effect of cooperating to display the eyes. Therefore, a structure that can expand the height adjustment range of the bracket is needed to improve the user experience, reduce the pressure on the neck and back of the patient, and enable the patient to cooperate with the examination in a more comfortable and more conducive to displaying posture, so that the details of the eyes can be more accurately obtained, greatly improving the accuracy of diagnosis, and achieving the effects of improving the efficiency of examination and improving comfort.

[0006] The bracket and the lighting observation device are not integrated, causing misalignment: the bracket of the existing equipment is generally arranged separately from the lighting observation device, lacks unified positioning standards, is prone to deviation during installation and use, and has no linkage adjustment mechanism, so the position cannot be changed synchronously according to the actual situation, resulting in misalignment, so that the lighting light cannot be accurately projected on the part supported by the bracket during inspection, and the field of view of the observation device is also difficult to accurately cover, affecting the observation effect, resulting in incomplete inspection, therefore, the bracket and the lighting observation device need to be integrated to make the lighting light accurately project on the part supported by the bracket, and the field of view of the observation device can also completely cover the target area, greatly improving the observation effect, and achieving the effects of improving the inspection efficiency and reducing the difficulty of adjusting the equipment. SUMMARY

[0007] In view of the problems of limited height adjustment range of the bracket and misalignment caused by the fact that the bracket and the lighting observation device are not integrated in the prior art, a slit lamp microscope for general ophthalmic examination is provided.

[0008] The slit lamp microscope for general ophthalmic examination provided by the present application aims to: by means of the support mechanism and the observation mechanism, the height adjustment range of the bracket is expanded, the use experience is improved, the pressure on the neck and back of the patient is reduced, the patient can cooperate with the examination in a more comfortable and more conducive position, so that the details of the eye can be more accurately obtained, the accuracy of diagnosis is greatly improved, the effects of improving the inspection efficiency and improving the comfort are achieved; by means of the lighting assembly and the auxiliary assembly, the bracket and the lighting observation device are integrated, the lighting light is accurately projected on the part supported by the bracket, and the field of view of the observation device can also completely cover the target area, the observation effect is greatly improved, and the effects of improving the inspection efficiency and reducing the difficulty of adjusting the equipment are achieved.

[0009] The technical scheme of the present application is: a slit lamp microscope for general ophthalmic examination, comprising a base, a support mechanism arranged above the base, and an observation mechanism arranged above the support mechanism, the support mechanism comprising a sliding table slidingly connected to the top of the base, the top of the sliding table being fixedly connected with a support seat, the observation mechanism comprising a special-shaped frame fixedly installed on the top of the support seat, the top of the special-shaped frame being fixedly connected with a prism seat, the outer wall of the prism seat being rotatably connected with an adjusting assembly, the inside of the adjusting assembly being provided with a periscope assembly for changing the observation position;

[0010] The adjusting assembly comprises an adjusting housing rotatably connected to the outer wall of the prism seat, the inner wall of the adjusting housing is fixedly connected with an extension cylinder, the inner wall of the extension cylinder is provided with a replacement groove, the inner wall of the adjusting housing is rotatably connected with a rotating shaft, the outer wall of the rotating shaft is fixedly connected with a plurality of lenses uniformly distributed, any lens can be connected with the inner wall of the replacement groove by rotating the rotating shaft, and the inner wall of the adjusting housing is also provided with two symmetrically arranged lifting sliding grooves.

[0011] Adopting the above scheme, for normal height adult patients, the operator observes the patient's eyes through the eyepiece, the extension tube and the horizontal opening of the periscope assembly, and can adjust the prism seat to make the light accurately pass through the prism to complete the reflection, refraction or dispersion optical process according to the design requirements, and comprehensively check the patient's eyes; for shorter minors, the operator checks the patient's eyes through the eyepiece, the extension tube and the vertical opening of the periscope assembly, and can replace different lenses at the replacement groove by rotating the rotating shaft to improve the clarity, thereby ensuring that the operator's line of sight height remains unchanged; for taller patients, when the periscope assembly is in a vertical opening state, the operator rotates the adjusting shell to change the observation direction of the periscope device from the bottom to the top, thereby ensuring that the operator's line of sight height remains unchanged while checking the eyes of taller patients.

[0012] Further, the periscope assembly comprises two lifting slide buttons slidingly connected to the inner walls of the two lifting grooves, respectively, and a periscope tube fixedly connected between the two lifting slide buttons, the inner wall of the periscope tube is rotatably connected with two right-angle knobs, the outer walls of the two right-angle knobs are both fixedly connected with a partition plate, and the inner wall of the periscope tube is also fixedly connected with two high-definition reflecting mirrors arranged in a central symmetry.

[0013] Further, the prism seat is also fixedly installed with an eyepiece at the end away from the adjusting shell.

[0014] Adopting the above scheme, for normal height adult patients, the periscope tube is initially in a horizontal opening state; for shorter patients, the operator makes the periscope tube slide down in the adjusting shell by the cooperation of the lifting slide button and the lifting groove, and rotates the right-angle knob to close the horizontal opening of the periscope tube and open the vertical opening of the periscope tube to form a periscope device; for taller patients, the periscope tube is still in a vertical opening state, but the observation direction of the periscope device is changed from the bottom to the top.

[0015] Further, the supporting mechanism further comprises a control handle fixedly installed inside the sliding table, and a lifting assembly fixedly installed on the top of the supporting base.

[0016] Further, the lifting assembly comprises a vertical column rotatably connected to the inner wall of the supporting base, the inner wall of the vertical column is rotatably connected with a threaded rod, the top of the threaded rod is fixedly connected with a hand wheel, and the outer wall of the threaded rod is threadedly connected with a threaded sleeve.

[0017] Further, the bottom of the vertical column is fixedly connected with a steering wheel rotatably connected to the inner wall of the supporting base, and the upper portion of the supporting base is provided with an illuminating assembly and an auxiliary assembly.

[0018] Adopting the above scheme, the height of the lifting frame is adjusted according to the height of the patient by the lifting assembly, the lifting frame drives the fixing frame and the bracket to move synchronously, and the angle between the lifting frame and the special-shaped frame can be adjusted by rotating the steering wheel in the supporting seat, so as to be adjusted to a suitable position and a suitable angle; for adult patients with normal height, the lifting assembly maintains the initial state; for underage patients with lower height, the height of the bracket and the lifting frame can be adjusted by rotating the hand wheel, the hand wheel drives the threaded rod to rotate, the threaded sleeve is lowered to the bottom in the vertical column, and the lifting frame is lowered accordingly to adapt to the patients with lower height, and the eye corner alignment plate is always at the same horizontal position as the projector during the movement; for patients with higher height, the threaded sleeve can be raised to the top in the vertical column by rotating the hand wheel to adapt to the patients with higher height.

[0019] Further, the lighting assembly comprises a lifting frame fixedly connected to the outer wall of the threaded sleeve, the top of the lifting frame is rotationally connected with a fixing frame, and the top of the fixing frame is fixedly connected with a projector and a lighting device.

[0020] Adopting the above scheme, the lighting device is turned on, the light source is projected to the patient's eye through the projector, and the projector can be finely adjusted to adapt to different observation positions.

[0021] Further, the auxiliary assembly comprises a bracket fixedly connected to the outer wall of the lifting frame, the upper part of the bracket is fixedly connected with a forehead support, the middle part of the bracket is rotationally connected with two symmetrically arranged eye corner alignment plates, and the lower part of the bracket is slidingly connected with a chin support.

[0022] Adopting the above scheme, the patient's head is placed on the bracket of the auxiliary assembly, the forehead is placed on the forehead support, the chin support is slid to find a comfortable and suitable chin supporting position, the patient's eye corner is aligned with the position of the eye corner alignment plate, and the eye corner alignment plate is rotated to be confirmed, so that the eye position is stable and convenient for subsequent examination; and the eye corner alignment plate is always at the same horizontal position as the projector during the movement of the lifting frame.

[0023] The beneficial effects of the present application are:

[0024] 1. By setting the observation mechanism, for normal height adult patients, the operator observes the patient's eyes through the eyepiece, extension tube and the horizontal opening of the periscope; for shorter height minors, the operator checks the patient's eyes through the eyepiece, extension tube and the vertical opening of the periscope, and can change the lens at the change groove by rotating the shaft to improve the clarity, thereby ensuring that the operator's line of sight height remains unchanged; for taller patients, when the periscope is in a vertical opening state, the operator rotates the adjusting shell to change the observation direction of the periscope device from below to above, thereby ensuring that the operator's line of sight height remains unchanged while checking the eyes of taller patients.

[0025] 2. By setting the periscope assembly, for normal height adult patients, the periscope is initially horizontally opened; for shorter height patients, the operator slides the periscope down in the adjusting shell by cooperating the lifting slide button and the lifting slide groove, and rotates the right angle knob to close the horizontal opening of the periscope with the partition and open the vertical opening, forming a periscope device; for taller patients, the periscope is still vertically opened, but the observation direction of the periscope device is changed from below to above.

[0026] 3. By setting the lifting assembly, the height of the lifting frame is adjusted according to the height of the patient, and the lifting frame will drive the fixed frame and the bracket to move synchronously; for normal height adult patients, the lifting assembly maintains the initial state; for shorter height minors, the height of the bracket and the lifting frame can be adjusted by rotating the hand wheel, and the hand wheel drives the threaded rod to rotate, so that the threaded sleeve is lowered to the bottom in the vertical column, and the lifting frame is lowered accordingly to adapt to shorter height patients, and the eye corner alignment plate is always at the same horizontal position as the projector during the movement; for taller patients, the threaded sleeve can be adjusted by rotating the hand wheel to move up to the top in the vertical column to adapt to taller patients. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0028] Figure 2 It is a schematic diagram of the structure of the sliding table of the present application;

[0029] Figure 3 It is a schematic diagram of the structure of the observation mechanism of the present application;

[0030] Figure 4 It is an exploded schematic diagram of the adjusting assembly of the present application;

[0031] Figure 5 It is a schematic diagram of the structure of the adjusting shell of the present application;

[0032] Figure 6 It is a schematic diagram of the structure of the periscope assembly of the present application;

[0033] Figure 7 Schematic diagram of the periscope transforming from a transverse opening state to a vertical opening state of the present application;

[0034] Figure 8 Schematic diagram of the support seat structure of the present application;

[0035] Figure 9 Schematic diagram of the lifting assembly structure of the present application;

[0036] Figure 10 Schematic diagram of the lighting assembly and auxiliary assembly structure of the present application;

[0037] Figure 11 Schematic diagram of the lifting frame lowered to the bottom of the present application;

[0038] Figure 12 Schematic diagram of the lifting frame raised to the top of the present application.

[0039] In the figure:

[0040] 1, base; 2, support mechanism; 21, sliding table; 22, control handle; 23, support seat; 24, lifting assembly; 241, vertical column; 242, hand wheel; 243, threaded rod; 244, threaded sleeve; 245, steering wheel; 3, observation mechanism; 31, special-shaped frame; 32, eyepiece; 33, prism seat; 34, adjusting assembly; 341, adjusting shell; 342, lifting sliding groove; 343, rotating shaft; 344, lens; 345, extension cylinder; 346, replacement groove; 35, periscope assembly; 351, periscope; 352, lifting slide button; 353, high-definition reflecting mirror; 354, partition; 355, right-angle knob; 4, lighting assembly; 41, lifting frame; 42, fixed frame; 43, projector; 44, lighting device; 5, auxiliary assembly; 51, bracket; 52, eye corner alignment plate; 53, forehead support; 54, chin support. DETAILED DESCRIPTION

[0041] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0042] Reference Figures 1-12The utility model provides a slit lamp microscope for ophthalmic general examination, including base 1, support mechanism 2 set up above base 1 and observation mechanism 3 set up above support mechanism 2, support mechanism 2 includes the sliding platform 21 of sliding connection in the top of base 1, and the top fixed connection of sliding platform 21 has support seat 23, and observation mechanism 3 includes the special-shaped frame 31 of fixed mounting in the top of support seat 23, and the top fixed connection of special-shaped frame 31 has prism seat 33, and the outer wall rotationally connected of prism seat 33 has adjusting assembly 34, and the inside of adjusting assembly 34 is provided with for the periscopic subassembly 35 of transformation observation position.

[0043] With reference to Figures 2-6 Adjusting assembly 34 includes the adjusting housing 341 of rotationally connected in the outer wall of prism seat 33, and the inner wall fixed connection of adjusting housing 341 has the extension cylinder 345, and the inner wall of extension cylinder 345 is set up with replacement groove 346, and the inner wall rotationally connected of adjusting housing 341 has the pivot 343, and the outer wall fixed connection of pivot 343 has the lens 344 of even distribution, and any lens 344 can be through the inner wall of rotation pivot 343 and replacement groove 346 and is connected, and the inner wall of adjusting housing 341 is also set up with the two lifting sliding slot 342 of symmetrical arrangement.

[0044] Specifically, sliding platform 21 can flexibly slide on base 1, so that the device can adjust the horizontal position according to the actual inspection requirements, support seat 23 provides a stable support base for the observation mechanism 3 above, ensuring the stability of the device during the inspection process; a plurality of lenses 344 have different optical properties, which can be selected according to different inspection requirements, and the operator can rotate the pivot 343 to make any one lens 344 and the inner wall of the replacement groove 346 connected, when the lens 344 needs to be replaced, just rotate the pivot 343 gently, align the appropriate lens 344 with the replacement groove 346 and connect, to realize the switching of different magnification or optical effect; the lifting sliding slot 342 cooperates with the periscopic subassembly 35 to realize the lifting adjustment of the periscopic subassembly 35, and the operator can flexibly adjust the height of the periscopic subassembly 35 according to the different eye positions of the patient and the inspection requirements, so as to obtain the best observation effect.

[0045] Through the observation mechanism 3, for adult patients with normal height, the operator observes the patient's eyes through the eyepiece 32, the extension tube 345 and the transverse opening of the periscope assembly 35, and can adjust the prism seat 33 to make the light accurately pass through the prism to complete the reflection, refraction or dispersion and other optical processes as designed, and comprehensively check the patient's eyes; for shorter minors, the operator checks the patient's eyes through the eyepiece 32, the extension tube 345 and the vertical opening of the periscope assembly 35, and can replace the different lenses 344 at the replacement groove 346 by rotating the rotating shaft 343 to improve the clarity, thereby ensuring that the operator's line of sight height remains unchanged; for taller patients, when the periscope assembly 35 is in a vertical opening state, the operator rotates the adjusting shell 341 to turn the observation direction of the periscope device from the bottom to the top, thereby ensuring that the operator's line of sight height remains unchanged to check the eyes of taller patients.

[0046] With reference to Figures 5-7 The periscope assembly 35 includes two lifting slide buttons 352 slidingly connected to the inner walls of the two lifting sliding grooves 342, and the periscope tube 351 is fixedly connected between the two lifting slide buttons 352. The inner wall of the periscope tube 351 is rotatably connected with two right-angle knobs 355, the outer walls of the two right-angle knobs 355 are fixedly connected with the partition plates 354, and the inner wall of the periscope tube 351 is also fixedly connected with two high-definition reflecting mirrors 353 arranged in a central symmetry. The prism seat 33 is also fixedly installed with the eyepiece 32 at one end away from the adjusting shell 341.

[0047] Specifically, the periscope tube 351 provides a stable channel for the propagation and observation of light. The operator can achieve specific function adjustment by rotating the right-angle knobs 355. When the operator rotates the right-angle knobs 355, the partition plates 354 will rotate together with the right-angle knobs 355. The partition plates 354 can adjust the light propagation path inside the periscope tube 351, such as closing or opening different openings, so as to change the observation direction and range.

[0048] Through the periscope assembly 35, for adult patients with normal height, the periscope tube 351 is initially transversely opened; for shorter patients, the operator makes the periscope tube 351 slide down in the adjusting shell 341 by the cooperation of the lifting slide buttons 352 and the lifting sliding grooves 342, and rotates the right-angle knobs 355 to close the transverse opening of the periscope tube 351 and open the vertical opening of the partition plates 354, forming a periscope device; for taller patients, the periscope tube 351 is still vertically opened, but the observation direction of the periscope device is turned from the bottom to the top.

[0049] With reference to Figures 2-9, the support mechanism 2 further comprises a control handle 22 fixedly installed inside the sliding table 21, and a lifting assembly 24 fixedly installed on the top of the support base 23, the lifting assembly 24 comprises a vertical column 241 rotationally connected to the inner wall of the support base 23, the inner wall of the vertical column 241 is rotationally connected with a threaded rod 243, the top of the threaded rod 243 is fixedly connected with a hand wheel 242, the outer wall of the threaded rod 243 is threadedly connected with a threaded sleeve 244, the bottom of the vertical column 241 is fixedly connected with a steering wheel 245, and the steering wheel 245 is rotationally connected to the inner wall of the support base 23, and the upper portion of the support base 23 is provided with the lighting assembly 4 and the auxiliary assembly 5.

[0050] By arranging the lifting assembly 24, the height of the lifting frame 41 can be adjusted according to the height of the patient, and the lifting frame 41 can drive the fixed frame 42 and the bracket 51 to move synchronously, and the angle between the lifting frame 41 and the special-shaped frame 31 can be adjusted by rotating the steering wheel 245 in the support base 23, so as to be adjusted to a suitable position and a suitable angle; for adult patients with normal height, the lifting assembly 24 maintains the initial state; for underage patients with lower height, the height of the bracket 51 and the lifting frame 41 can be adjusted by rotating the hand wheel 242, the hand wheel 242 drives the threaded rod 243 to rotate, so that the threaded sleeve 244 moves downward to the bottom in the vertical column 241, and the lifting frame 41 moves downward accordingly, so as to adapt to patients with lower height, and the eye corner alignment plate 52 is always at the same horizontal position as the projector 43 during the movement; for patients with higher height, the threaded sleeve 244 can be adjusted to move upward to the top in the vertical column 241 by rotating the hand wheel 242, so as to adapt to patients with higher height.

[0051] With reference to Figure 10 The lighting assembly 4 comprises the lifting frame 41 fixedly connected to the outer wall of the threaded sleeve 244, the top of the lifting frame 41 is rotationally connected with the fixed frame 42, and the top of the fixed frame 42 is fixedly connected with the projector 43 and the lighting device 44.

[0052] Specifically, the lifting frame 41 can move synchronously with the movement of the threaded sleeve 244, and the threaded sleeve 244 is designed to allow position adjustment on the corresponding structure, so as to drive the lifting frame 41 to change the height; the top of the lifting frame 41 is rotationally connected with the fixed frame 42, so that the fixed frame 42 has flexibility, and the operator can easily rotate the fixed frame 42 and adjust the angle according to the actual inspection condition; the projector 43 can focus light and accurately project it to the eye of the patient, forming a specific lighting mode, such as a slit light; and the lighting device 44 can provide different light sources for the entire inspection process.

[0053] By arranging the lighting assembly 4, the lighting device 44 is turned on, the light source is projected to the eye of the patient through the projector 43, and the projector 43 can be finely adjusted to adapt to different observation positions.

[0054] With reference toFigure 10 The auxiliary assembly 5 comprises a bracket 51 fixedly connected to the outer wall of the lifting frame 41, the upper part of the bracket 51 is fixedly connected with a forehead support 53, the middle part of the bracket 51 is rotatably connected with two symmetrically arranged eye corner alignment plates 52, and the lower part of the bracket 51 is slidably connected with a chin support 54.

[0055] By arranging the auxiliary assembly 5, the head of the patient is placed on the bracket 51 of the auxiliary assembly 5, the forehead is placed at the forehead support 53, the chin support 54 is slid to find a comfortable and suitable chin supporting position, the eye corners of the patient are aligned with the positions of the eye corner alignment plates 52, and the eye corner alignment plates 52 are rotated to be confirmed, so that the position of the eyes is ensured to be stable, and the subsequent examination is facilitated; and the eye corner alignment plates 52 are always in the same horizontal position as the projector 43 during the movement of the lifting frame 41.

[0056] During use, the height of the lifting frame 41 is adjusted according to the height of the patient, the lifting frame 41 drives the fixed frame 42 and the bracket 51 to move synchronously, the control handle 22 in the sliding table 21 is operated, the sliding table 21 slides on the top of the base table 1, and the angle between the lifting frame 41 and the special-shaped frame 31 can be adjusted by rotating the steering wheel 245 in the supporting seat 23, so as to be adjusted to a suitable position and a suitable angle; for adult patients with normal height, the height of the bracket 51 and the lifting frame 41 is maintained in the initial state, the head of the patient is placed on the auxiliary assembly 5, and the subsequent examination is facilitated; the lighting device 44 is turned on, the light source is projected to the eyes of the patient through the projector 43, and the projector 43 can be finely adjusted to adapt to different observation positions, the eyes of the patient are observed through the eyepiece 32, the extension tube 345 and the transverse opening of the periscope 351, and the prism seat 33 can be adjusted, so that the light can accurately pass through the prism to complete the optical processes such as reflection, refraction or dispersion, and the eyes of the patient are comprehensively examined; for underage patients with lower height, the lifting frame 41 is first adjusted to move downward to the bottom, then the periscope 351 is slid downward in the adjusting shell 341 through the cooperation of the lifting slide button 352 and the lifting slide groove 342, the right angle knob 355 is rotated, the partition plate 354 closes the transverse opening of the periscope 351 and opens the vertical opening, a periscope device is formed, and the eyes of the patient are examined through the two high-definition reflecting mirrors 353 by the eyepiece 32, the extension tube 345 and the vertical opening of the periscope 351; for patients with higher height, the lifting frame 41 is first adjusted to move upward to the top, then when the periscope 351 is in the vertical opening state, the observation direction of the periscope device is turned from the lower side to the upper side by rotating the adjusting shell 341, so that the eyes of the patient with higher height can be examined while the height of the line of sight of the operator is unchanged.

[0057] Working principle of the application:

[0058] In operation, the height of the lifting frame 41 is adjusted according to the height of the patient, and the lifting frame 41 moves synchronously with the fixed frame 42 and the bracket 51. The operator adjusts the angle between the lifting frame 41 and the special-shaped frame 31 by rotating the steering wheel 245 in the support seat 23, and adjusts the sliding table 21 on the top of the base table 1 by operating the control handle 22 in the sliding table 21, so as to adjust to the appropriate position and angle.

[0059] For adult patients with normal height, the height of the bracket 51 and the lifting frame 41 is maintained in the initial state, the patient's head is first placed on the bracket 51 of the auxiliary assembly 5, the forehead is placed on the forehead support 53, the chin support 54 is slid to find a comfortable and appropriate chin support position, the patient's eye corners are aligned with the eye corner alignment plate 52, and the eye corner alignment plate 52 is rotated to confirm, so as to ensure the stability of the eye position and facilitate subsequent examination.

[0060] The lighting device 44 is turned on, the light source is projected to the patient's eye through the projector 43, and the projector 43 can be finely adjusted to adapt to different observation positions. The operator observes the patient's eye through the eyepiece 32, the extension barrel 345, and the transverse opening of the periscope 351, and adjusts the prism seat 33 to make the light accurately pass through the prism to complete the reflection, refraction, or dispersion optical process as designed, and comprehensively examine the patient's eye.

[0061] For short children, their normal sitting posture is much lower than the position of the bracket 51 in the initial state. The height of the bracket 51 and the lifting frame 41 can be adjusted by rotating the hand wheel 242. The hand wheel 242 drives the threaded rod 243 to rotate, so that the threaded sleeve 244 moves downward in the vertical column 241 to the bottom, and the lifting frame 41 moves downward accordingly to adapt to the height of the patient. During the movement, the eye corner alignment plate 52 is always at the same horizontal position as the projector 43, and then the patient's head is fixed on the bracket 51.

[0062] Then the operator adjusts the periscope 351 to slide down in the adjusting shell 341 by cooperating the lifting slide button 352 and the lifting slide groove 342, rotates the right-angle knob 355 to close the transverse opening of the periscope 351 by the partition plate 354 and open the vertical opening, forms a periscope device, and the operator examines the patient's eye through the eyepiece 32, the extension barrel 345, and the vertical opening of the periscope 351, and reflects the patient's eye through the two high-definition mirrors 353. The clarity can be improved by rotating the rotating shaft 343 to replace the different lenses 344 at the replacement groove 346, so that the height of the operator's line of sight remains unchanged.

[0063] For patients with high height, their normal sitting posture is much higher than the position of the bracket 51 in the initial state. The height of the bracket 51 and the lifting frame 41 can be adjusted by rotating the hand wheel 242 to move the threaded sleeve 244 upward in the vertical column 241 to the top to adapt to the height of the patient.

[0064] Then when the periscope 351 is in the vertical opening state, the operator rotates the adjusting shell 341, so that the observation direction of the periscope is turned from the lower side to the upper side, thereby the eye examination can be performed on the patient with higher height without changing the height of the operator's line of sight.

[0065] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application but not limit the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or equivalently replaced without departing from the spirit and scope of the present application, and they should be covered in the scope of the claims of the present application.

Claims

1. A slit lamp microscope for ophthalmic screening, comprising a base table (1), a supporting mechanism (2) arranged above the base table (1), and a viewing mechanism (3) arranged above the supporting mechanism (2), characterized in that: The support mechanism (2) includes a sliding table (21) slidingly connected to the top of the base table (1), and the top of the sliding table (21) is fixedly connected with a support seat (23); the observation mechanism (3) includes a special-shaped frame (31) fixedly installed on the top of the support seat (23), and the top of the special-shaped frame (31) is fixedly connected with a prism seat (33); the outer wall of the prism seat (33) is rotatably connected with an adjusting assembly (34), and the inside of the adjusting assembly (34) is provided with a periscope assembly (35) for changing the observation position. The adjusting assembly (34) includes an adjusting housing (341) rotatably connected to the outer wall of the prism seat (33), and the inner wall of the adjusting housing (341) is fixedly connected with an extension cylinder (345); the inner wall of the extension cylinder (345) is provided with a replacement groove (346); the inner wall of the adjusting housing (341) is rotatably connected with a rotating shaft (343), and the outer wall of the rotating shaft (343) is fixedly connected with a plurality of lenses (344) uniformly distributed; any lens (344) can be clamped with the inner wall of the replacement groove (346) by rotating the rotating shaft (343); and the inner wall of the adjusting housing (341) is also provided with two symmetrically arranged lifting sliding grooves (342). The prism seat (33) is also fixedly installed with an eyepiece (32) at the end away from the adjusting housing (341). The support mechanism (2) further includes a control handle (22) fixedly installed in the inside of the sliding table (21), and a lifting assembly (24) fixedly installed on the top of the support seat (23). The upper portion of the support seat (23) is provided with an illuminating assembly (4) and an auxiliary assembly (5), the illuminating assembly (4) is fixedly installed on the outer wall of the lifting assembly (24), and the auxiliary assembly (5) is fixedly installed on the outer wall of the illuminating assembly (4).

2. A slit lamp microscope for ophthalmic screening as claimed in claim 1, wherein: The periscope assembly (35) includes two lifting sliding buttons (352) slidingly connected to the inner walls of the two lifting sliding grooves (342) respectively, and a periscope barrel (351) fixedly connected between the two lifting sliding buttons (352); the inner wall of the periscope barrel (351) is rotatably connected with two right-angle knobs (355), the outer walls of the two right-angle knobs (355) are fixedly connected with baffles (354), and the inner wall of the periscope barrel (351) is also fixedly connected with two high-definition reflecting mirrors (353) arranged in a central symmetry.

3. The slit lamp microscope for ophthalmic screening as claimed in claim 1, wherein: The lifting assembly (24) includes a vertical column (241) rotatably connected to the inner wall of the support seat (23), a screw rod (243) rotatably connected to the inner wall of the vertical column (241), a hand wheel (242) fixedly connected to the top of the screw rod (243), a threaded sleeve (244) threadedly connected to the outer wall of the screw rod (243), and a steering wheel (245) fixedly connected to the bottom of the vertical column (241) and rotatably connected to the inner wall of the support seat (23).

4. The slit lamp microscope for ophthalmic screening according to claim 3, characterized in that: The lighting assembly (4) comprises a lifting frame (41) fixedly connected to the outer wall of the threaded sleeve (244), the top of the lifting frame (41) is rotatably connected with a fixing frame (42), the top of the fixing frame (42) is fixedly connected with a projector (43) and a lighting device (44).

5. The slit lamp microscope for ophthalmic screening according to claim 4, characterized in that: The auxiliary assembly (5) comprises a bracket (51) fixedly connected to the outer wall of the lifting frame (41), the upper part of the bracket (51) is fixedly connected with a forehead support (53), the middle part of the bracket (51) is rotatably connected with two eye corner alignment plates (52) symmetrically arranged, and the lower part of the bracket (51) is slidably connected with a chin support (54).

Images