Slit-lamp microscope for eye science general examination

Abstract

The invention relates to the technical field of ophthalmic examination equipment, and discloses a slit-lamp microscope for ophthalmic science general examination, the slit-lamp microscope comprises a bottom table, a supporting mechanism arranged above the bottom table, and an observation mechanism arranged above the supporting mechanism, the supporting mechanism comprises a sliding table connected to the top of the bottom table in a sliding manner, and the sliding table is connected to the top of the bottom table in a sliding manner; a supporting base is fixedly connected to the top of the sliding table, through the arranged observation mechanism, for short juveniles, an operator examines the eyes of a patient through vertical openings of an eyepiece, an extension tube and a periscope tube, and the definition can be improved by rotating a rotating shaft to replace different lenses at a replacement groove; for a tall patient, when the periscopic tube is in a vertical opening state, an operator rotates the adjusting shell, so that the observation direction of the periscopic device is changed from the lower part to the upper part, and therefore, eye examination can be carried out on the tall patient under the condition that the sight height of the operator is not changed.

Description

Technical Field

[0001] The present invention relates to the technical field of ophthalmic examination equipment, in particular to a slit lamp microscope used for general ophthalmic examinations. Background Art

[0002] Comprehensive and accurate screening is crucial for the diagnosis of ophthalmic diseases. The slit lamp microscope has emerged as a key instrument for ophthalmic screening. Utilizing a slit illumination system and a binocular microscope system, it can clearly observe the fine structures of the anterior and posterior segments of the eye. Doctors can use it to examine the health of tissues such as the cornea, conjunctiva, and iris, and detect various conditions such as inflammation, trauma, and degeneration. In ophthalmic screening, the slit lamp microscope's ease of operation and rapid, accurate diagnosis significantly improve the early detection of ophthalmic diseases, buying valuable time for timely treatment.

[0003] Patent publication number CN118766411A discloses a slit lamp microscope device for ophthalmic examination, including a workbench, an adjustment instrument table, a light source projection system, a microscope and a head fixing mechanism. The workbench is provided with an adjustment instrument table and a head fixing mechanism, the adjustment instrument table is provided with a light source projection system and a microscope, a rotating electromagnet is provided on the microscope bracket of the adjustment instrument table, the driving end of the rotating electromagnet is provided with an objective lens cover, the slit lamp switch and the rotating electromagnet of the light source projection system are both connected to the controller, the head fixing mechanism includes two supporting columns, two clamping and tensioning mechanisms and an annular belt, the supporting columns are provided with a clamping and tensioning mechanism, the clamping and tensioning mechanism is provided with an annular belt, the two clamping and tensioning mechanisms fix the head in the left and right directions. Compared with the existing technology, it is easy to use, 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 existing technology has the following defects: The height adjustment range of the bracket is limited: the existing equipment has not fully considered the needs of patients of different heights, and the travel of the bracket adjustment structure is too narrow. For people who are too tall, they need to bend down and lower their heads, which can easily make the neck and back muscles tense, and the eyes cannot be fully displayed due to the restricted posture; for people who are too short, they have to raise their heads with effort, which not only makes the neck tired, but also affects the effect of cooperating with the display of the eyes. Therefore, it is necessary to set up a structure that can expand the height adjustment range of the bracket, improve the user experience, reduce the pressure on the patient's neck and back, and allow patients to cooperate with the examination in a more comfortable and more display-friendly posture, so that the details of the eye can be obtained more accurately, greatly improving the accuracy of diagnosis, and achieving the effect of improving examination efficiency and improving comfort.

[0005] The bracket and the lighting observation device are not integrated, resulting in misalignment: the bracket of existing equipment is generally set separately from the lighting observation device, lacking a unified positioning standard, and is prone to deviations during installation and use. There is no linkage adjustment mechanism, and the position cannot be changed synchronously according to actual conditions, resulting in positional incoordination. As a result, the lighting light cannot be accurately projected to the part supported by the bracket during inspection, and the field of view of the observation device is difficult to accurately cover, affecting the observation effect and resulting in incomplete inspection. Therefore, it is necessary to set up a structure that integrates the bracket and the lighting observation device, so that the lighting light can be accurately projected to 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, thereby achieving the effect of improving inspection efficiency and reducing the difficulty of equipment adjustment. Summary of the Invention

[0006] In view of the problems in the existing technology such as limited height adjustment range of the bracket and misalignment caused by the lack of integration between the bracket and the lighting observation device, a slit lamp microscope for general ophthalmological examinations is proposed.

[0007] The present application provides a slit lamp microscope for general ophthalmic examinations, the purpose of which is to: expand the height adjustment range of the bracket through the provision of a support mechanism and an observation mechanism, improve the user experience, reduce the pressure on the patient's neck and back, and allow the patient to cooperate with the examination in a more comfortable and more display-friendly posture, so that the details of the eye can be obtained more accurately, greatly improving the accuracy of diagnosis, and achieving the effect of improving examination efficiency and improving comfort; through the provision of lighting components and auxiliary components, the bracket and the lighting observation device are integrated, so that the lighting light is accurately projected to 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 effect of improving inspection efficiency and reducing the difficulty of equipment adjustment.

[0008] The technical solution of the present invention is: a slit lamp microscope for general ophthalmic examinations, comprising a base, a support mechanism disposed above the base, and an observation mechanism disposed above the support mechanism, wherein the support mechanism comprises a slide slidably connected to the top of the base, the top of the slide being fixedly connected to a support seat, the observation mechanism comprising a special-shaped frame fixedly mounted on the top of the support seat, the top of the special-shaped frame being fixedly connected to a prism seat, the outer wall of the prism seat being rotatably connected to an adjustment assembly, the interior of the adjustment assembly being provided with a periscope assembly for changing the observation position; The adjustment assembly includes an adjustment shell rotatably connected to the outer wall of the prism seat, an extension cylinder is fixedly connected to the inner wall of the adjustment shell, a replacement groove is provided on the inner wall of the extension cylinder, the inner wall of the adjustment shell is rotatably connected to a rotating shaft, a plurality of evenly distributed lenses are fixedly connected to the outer wall of the rotating shaft, any of the lenses can be engaged with the inner wall of the replacement groove by rotating the rotating shaft, and the inner wall of the adjustment shell is also provided with two symmetrically arranged lifting slots.

[0009] By adopting the above scheme, through the observation mechanism, for adult patients of normal height, the operator observes the patient's eyes through the eyepiece, extension tube and the horizontal opening of the periscope assembly, and can adjust the prism seat so that the light can accurately pass through the prism according to the design requirements to complete optical processes such as reflection, refraction or dispersion, thereby comprehensively examining the patient's eyes; for minors of shorter height, the operator examines the patient's eyes through the eyepiece, extension tube and the vertical opening of the periscope assembly, and can improve the clarity by replacing different lenses at the replacement slot by rotating the shaft, thereby ensuring that the operator's line of sight remains unchanged; for patients with taller height, when the periscope assembly is in a vertically open state, the operator rotates the adjustment shell to change the observation direction of the periscope device from bottom to top, thereby ensuring that the eye examination of patients with taller height can be performed while ensuring that the operator's line of sight remains unchanged.

[0010] Furthermore, the periscope assembly includes two lifting slide buttons that are respectively slidably connected to the inner walls of the two lifting slide grooves, a periscope tube is fixedly connected between the two lifting slide buttons, the inner wall of the periscope tube is rotatably connected to two right-angle knobs, the outer walls of the two right-angle knobs are fixedly connected to partitions, and the inner wall of the periscope tube is also fixedly connected to two high-definition reflectors arranged symmetrically with the center.

[0011] Furthermore, an eyepiece is fixedly mounted on one end of the prism seat away from the adjustment housing.

[0012] With the above scheme, through the periscope assembly, for adult patients of normal height, the periscope is initially opened horizontally; for patients with shorter height, the operator adjusts the periscope by cooperating with the lifting slide button and the lifting slide groove in the outer shell to slide the periscope down, and rotates the right-angle knob to make the partition close the horizontal opening of the periscope and open the vertical opening to form a periscope device; for patients with taller height, the periscope is still opened vertically, but the observation direction of the periscope device is turned from bottom to top.

[0013] Furthermore, the support mechanism also includes a control handle fixedly installed inside the slide, and a lifting component fixedly installed on the top of the support seat.

[0014] Furthermore, the lifting assembly includes a vertical column rotatably connected to the inner wall of the support seat, the inner wall of the vertical column is rotatably connected to a threaded rod, the top of the threaded rod is fixedly connected to a handwheel, and the outer wall of the threaded rod is threadedly connected to a threaded sleeve.

[0015] Furthermore, a steering wheel is fixedly connected to the bottom of the vertical column, and the steering wheel is rotatably connected to the inner wall of the support seat. A lighting component and an auxiliary component are arranged above the support seat.

[0016] By adopting the above scheme, the height of the lifting frame can be adjusted according to the patient's height through the provided lifting assembly, and the lifting frame will drive the fixed 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 support seat, thereby adjusting to the appropriate position and angle; for adult patients of normal height, the lifting assembly maintains the initial state; for minors with shorter height, the handwheel can be turned to adjust the height of the bracket and the lifting frame, and the handwheel drives the threaded rod to rotate, so that the threaded sleeve moves down to the bottom in the vertical column, and the lifting frame moves down accordingly to accommodate patients with shorter height. During the movement, the eye corner alignment plate is always at the same horizontal position as the projector; for patients with taller height, the handwheel can be turned to adjust the threaded sleeve to move up to the top in the vertical column to accommodate patients with taller height.

[0017] Furthermore, the lighting assembly includes a lifting frame fixedly connected to the outer wall of the threaded sleeve, the top of the lifting frame is rotatably connected to a fixing frame, and the top of the fixing frame is fixedly connected to a projector and a lighting device.

[0018] With the above solution, by setting up the lighting assembly and turning on the lighting device, the light source will be projected onto the patient's eyes through the projector, and the projector can be fine-tuned to adapt to different observation positions.

[0019] Furthermore, the auxiliary component includes a bracket fixedly connected to the outer wall of the lifting frame, the upper part of the bracket is fixedly connected to the forehead support, the middle part of the bracket is rotatably connected to two symmetrically arranged eye corner alignment plates, and the lower part of the bracket is slidably connected to the chin support.

[0020] With the above solution, the patient's head is placed on the bracket of the auxiliary component through the auxiliary component, the forehead rests on the forehead rest, the chin rest is slid to find a comfortable and appropriate chin support position, the patient's eye corners are aligned with the eye corner alignment plate position, and the eye corner alignment plate is rotated for confirmation to ensure that the eye position is stable for subsequent inspection; and during the movement of the lifting frame, the eye corner alignment plate is always at the same horizontal position as the projector.

[0021] Beneficial effects of the present invention: 1. Through the observation mechanism, for adult patients of normal height, the operator observes the patient's eyes through the eyepiece, extension tube and the horizontal opening of the periscope; for minors of shorter height, the operator examines the patient's eyes through the eyepiece, extension tube and the vertical opening of the periscope, and can replace different lenses at the replacement slot by rotating the shaft to improve the clarity, thereby ensuring that the operator's line of sight remains unchanged; for taller patients, when the periscope is in a vertically open state, the operator rotates the adjustment shell to change the observation direction of the periscope device from bottom to top, thereby ensuring that the operator's line of sight remains unchanged. Eye examinations can be performed on taller patients while ensuring that the operator's line of sight remains unchanged.

[0022] 2. Through the periscope assembly, for adult patients of normal height, the periscope is initially open horizontally; for patients of shorter height, the operator adjusts the periscope by cooperating with the lifting slide button and the lifting slide slot in the outer shell to slide the periscope down, and rotates the right-angle knob to make the partition close the horizontal opening of the periscope and open the vertical opening to form a periscope device; for patients of taller height, the periscope is still open vertically, but the observation direction of the periscope device is turned from bottom to top.

[0023] 3. Through the provided lifting assembly, the height of the lifting frame can be adjusted according to the patient's height. The lifting frame will drive the fixed frame and the bracket to move synchronously. For adult patients of normal height, the lifting assembly maintains its initial state. For minors with shorter height, the hand wheel can be turned to adjust the height of the bracket and the lifting frame. The hand wheel drives the threaded rod to rotate, so that the threaded sleeve moves down to the bottom in the vertical column, and the lifting frame moves down accordingly to accommodate shorter patients. During the movement, the canthus alignment plate is always at the same horizontal position as the projector. For taller patients, the hand wheel can be turned to adjust the threaded sleeve to move up to the top in the vertical column to accommodate taller patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the slide of the present invention; Figure 3 This is a structural diagram of the observation mechanism of the present invention; Figure 4 This is a schematic diagram of the explosion structure of the regulating component of the present invention; Figure 5 This is a structural diagram of the adjustment housing of the present invention; Figure 6 This is a schematic structural diagram of the periscope assembly of the present invention; Figure 7 This is a schematic diagram of the periscope of the present invention being transformed from a horizontal opening to a vertical opening state; Figure 8 This is a structural diagram of the support seat of the present invention; Figure 9 This is a structural diagram of the lifting assembly of the present invention; Figure 10 It is a structural schematic diagram of the lighting assembly and auxiliary assembly of the present invention; Figure 11 This is a schematic diagram of the lifting frame of the present invention when it is moved to the bottom; Figure 12 This is a schematic diagram of the lifting frame of the present invention when it moves to the top.

[0025] In the picture: 1. Base; 2. Support mechanism; 21. Slide; 22. Control handle; 23. Support base; 24. Lifting assembly; 241. Vertical column; 242. Handwheel; 243. Threaded rod; 244. Threaded sleeve; 245. Steering wheel; 3. Observation mechanism; 31. Special-shaped frame; 32. Eyepiece; 33. Prism mount; 34. Adjustment assembly; 341. Adjustment housing; 342. Lifting slide; 343. Rotating shaft; 344 , lens; 345, extension tube; 346, replacement slot; 35, periscope assembly; 351, periscope tube; 352, lifting slide button; 353, high-definition reflector; 354, partition; 355, right-angle knob; 4, lighting assembly; 41, lifting frame; 42, fixing frame; 43, projector; 44, lighting device; 5, auxiliary assembly; 51, bracket; 52, eye corner alignment plate; 53, forehead rest; 54, chin rest. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0027] Reference Figures 1-12 , provides a slit lamp microscope for general ophthalmological examinations, including a base 1, a supporting mechanism 2 arranged above the base 1, and an observation mechanism 3 arranged above the supporting mechanism 2, the supporting mechanism 2 including a slide 21 slidably connected to the top of the base 1, the top of the slide 21 is fixedly connected to a support seat 23, the observation mechanism 3 includes a special-shaped frame 31 fixedly mounted on the top of the support seat 23, the top of the special-shaped frame 31 is fixedly connected to a prism seat 33, the outer wall of the prism seat 33 is rotatably connected to an adjusting component 34, and the interior of the adjusting component 34 is provided with a periscope component 35 for changing the observation position.

[0028] Reference Figure 2-Figure 6 The adjustment component 34 includes an adjustment shell 341 rotatably connected to the outer wall of the prism seat 33, an extension tube 345 is fixedly connected to the inner wall of the adjustment shell 341, and a replacement groove 346 is provided on the inner wall of the extension tube 345. The inner wall of the adjustment shell 341 is rotatably connected to a rotating shaft 343, and a plurality of evenly distributed lenses 344 are fixedly connected to the outer wall of the rotating shaft 343. Any lens 344 can be engaged with the inner wall of the replacement groove 346 by rotating the rotating shaft 343. The inner wall of the adjustment shell 341 is also provided with two symmetrically arranged lifting slots 342.

[0029] Specifically, the slide 21 can slide flexibly on the base 1, so that the equipment can adjust its horizontal position according to actual inspection needs. The support seat 23 provides a stable support base for the observation mechanism 3 above, ensuring the stability of the equipment during the inspection process; multiple lenses 344 have different optical properties and can be selected according to different inspection needs. The operator can rotate the rotating shaft 343 to make any lens 344 engage with the inner wall of the replacement groove 346. When the lens 344 needs to be replaced, just gently rotate the rotating shaft 343, align the appropriate lens 344 with the replacement groove 346 and engage it, so as to achieve switching between different magnifications or optical effects; the lifting slide 342 cooperates with the periscope assembly 35 to realize the lifting and lowering adjustment of the periscope assembly 35. The operator can flexibly adjust the height of the periscope assembly 35 according to the patient's different eye positions and inspection needs, so as to obtain the best observation effect.

[0030] Through the observation mechanism 3, for adult patients of normal height, the operator observes the patient's eyes through the eyepiece 32, the extension tube 345 and the horizontal opening of the periscope assembly 35, and can adjust the prism seat 33 so that the light can accurately pass through the prism to complete optical processes such as reflection, refraction or dispersion according to the design requirements, thereby comprehensively examining the patient's eyes; for minors of shorter height, the operator examines the patient's eyes through the eyepiece 32, the extension tube 345 and the vertical opening of the periscope assembly 35, and can replace different lenses 344 at the replacement slot 346 by rotating the shaft 343 to improve the clarity, thereby ensuring that the operator's line of sight remains unchanged; for patients with taller height, when the periscope assembly 35 is in a vertically open state, the operator rotates the adjustment shell 341 to change the observation direction of the periscope device from downward to upward, thereby ensuring that the eye examination of patients with taller height is performed while ensuring that the operator's line of sight remains unchanged.

[0031] Reference Figure 5-Figure 7 The periscope assembly 35 includes two lifting slide buttons 352 that are respectively slidably connected to the inner walls of the two lifting slide grooves 342. A periscope tube 351 is fixedly connected between the two lifting slide buttons 352. The inner wall of the periscope tube 351 is rotatably connected to two right-angle knobs 355. The outer walls of the two right-angle knobs 355 are fixedly connected to a partition 354. The inner wall of the periscope tube 351 is also fixedly connected to two high-definition reflectors 353 that are centrally symmetrically arranged. The eyepiece 32 is also fixedly installed on the end of the prism seat 33 away from the adjustment shell 341.

[0032] Specifically, the periscope 351 provides a stable channel for the propagation and observation of light. The operator can achieve specific functional adjustments by rotating the right-angle knob 355. When the operator rotates the right-angle knob 355, the partition 354 will rotate with the right-angle knob 355. The partition 354 can adjust the light propagation path inside the periscope 351, such as closing or opening different openings, thereby changing the direction and range of observation.

[0033] Through the provided periscope assembly 35, for adult patients of normal height, the periscope 351 is initially open horizontally; for patients of shorter height, the operator adjusts the periscope 351 in the outer shell 341 by cooperating with the lifting slide button 352 and the lifting slide groove 342 to slide the periscope 351 down, and rotates the right-angle knob 355 to make the partition 354 close the horizontal opening of the periscope 351 and open the vertical opening to form a periscope device; for patients of taller height, the periscope 351 is still open vertically, but the observation direction of the periscope device is turned from bottom to top.

[0034] Reference Figure 2-Figure 9 The support mechanism 2 also includes a control handle 22 fixedly installed inside the slide 21, and a lifting assembly 24 fixedly installed on the top of the support seat 23. The lifting assembly 24 includes a vertical column 241 rotatably connected to the inner wall of the support seat 23, the inner wall of the vertical column 241 is rotatably connected to a threaded rod 243, the top of the threaded rod 243 is fixedly connected to a handwheel 242, the outer wall of the threaded rod 243 is threadedly connected to a threaded sleeve 244, the bottom of the vertical column 241 is fixedly connected to a steering wheel 245, the steering wheel 245 is rotatably connected to the inner wall of the support seat 23, and a lighting assembly 4 and an auxiliary assembly 5 are arranged above the support seat 23.

[0035] The height of the lifting frame 41 can be adjusted according to the patient's height through the provided lifting component 24. The lifting frame 41 will drive the fixing 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 rotated and adjusted in the support seat 23 by the steering wheel 245, thereby adjusting to a suitable position and angle; for adult patients of normal height, the lifting component 24 maintains the initial state; for minors of shorter height, the hand wheel 242 can be rotated to adjust the height of the bracket 51 and the lifting frame 41, and the hand wheel 242 drives the threaded rod 243 to rotate, so that the threaded sleeve 244 moves down to the bottom in the vertical column 241, and the lifting frame 41 moves down accordingly to adapt to patients of shorter height. During the movement, the eye corner alignment plate 52 is always at the same horizontal position as the projector 43; for patients of taller height, the hand wheel 242 can be rotated to adjust the threaded sleeve 244 to move up to the top in the vertical column 241 to adapt to patients of taller height.

[0036] Reference Figure 10The lighting assembly 4 includes 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 to the fixing frame 42, and the top of the fixing frame 42 is fixedly connected to the projector 43 and the lighting device 44.

[0037] Specifically, the lifting frame 41 can move synchronously with the movement of the threaded sleeve 244. The design of the threaded sleeve 244 allows it to be adjusted in position on the corresponding structure, thereby driving the lifting frame 41 to achieve height changes; the top of the lifting frame 41 is rotatably connected to the fixed frame 42, which gives the fixed frame 42 a certain degree of flexibility. The operator can easily rotate the fixed frame 42 and adjust its angle according to the actual inspection situation; the projector 43 can focus and accurately project light onto the patient's eyes to form a specific lighting mode, such as slit light; the lighting device 44 can provide different light sources for the entire inspection process.

[0038] By setting up the lighting assembly 4 and turning on the lighting device 44, the light source will be projected onto the patient's eyes through the projector 43, and the projector 43 can be fine-tuned to adapt to different observation positions.

[0039] Reference Figure 10 The auxiliary component 5 includes a bracket 51 fixedly connected to the outer wall of the lifting frame 41, the upper part of the bracket 51 is fixedly connected to the forehead support 53, the middle part of the bracket 51 is rotatably connected to two symmetrically arranged eye corner alignment plates 52, and the lower part of the bracket 51 is slidably connected to the chin support 54.

[0040] Through the auxiliary component 5, the patient's head is placed on the bracket 51 of the auxiliary component 5, the forehead rests 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, ensuring that the eye position is stable and convenient for subsequent inspection; and during the movement of the lifting frame 41, the eye corner alignment plate 52 is always at the same horizontal position as the projector 43.

[0041] During use, the height of the lifting frame 41 is adjusted according to the patient's height. The lifting frame 41 will drive the fixed frame 42 and the bracket 51 to move synchronously. The operator operates the control handle 22 inside the slide 21 to make the slide 21 slide on the top of the base 1, and can adjust the angle between the lifting frame 41 and the special-shaped frame 31 by rotating the steering wheel 245 in the support seat 23, thereby adjusting it to a suitable position and angle; for adult patients of normal height, the height of the bracket 51 and the lifting frame 41 remains in the initial state, and the patient's head is placed on the auxiliary component 5 for subsequent inspection; turn on the lighting device 44, and the light source will be projected to the patient's eyes through the projector 43, and the projector 43 can be fine-tuned to adapt to different observation positions. The operator observes the patient's eyes through the eyepiece 32, the extension tube 345 and the lateral opening of the periscope 351, and can adjust the prism seat 33 so that the light can pass through the prism accurately according to the design requirements. The operator can examine the patient's eyes comprehensively through optical processes such as reflection, refraction or dispersion. For minors with shorter height, the lifting frame 41 is first adjusted to move downward to the bottom. Then, the operator slides the periscope 351 downward by cooperating with the lifting slide button 352 and the lifting slide groove 342 in the adjustment housing 341, and rotates the right-angle knob 355 to close the lateral opening of the periscope 351 and open the vertical opening to form a periscope device. The operator examines the patient's eyes through the eyepiece 32, the extension tube 345 and the vertical opening of the periscope 351, and the reflection of the two high-definition mirrors 353. For patients with taller 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 operator rotates the adjustment housing 341 to change the observation direction of the periscope device from downward to upward. In this way, the eyes of patients with taller height can be examined while ensuring that the operator's line of sight remains unchanged.

[0042] Working principle of the present invention: During operation, the height of the lifting frame 41 is adjusted according to the patient's height. The lifting frame 41 will drive the fixed frame 42 and the bracket 51 to move synchronously. The operator operates the control handle 22 inside the slide 21 to make the slide 21 slide on the top of the base 1, and can adjust the angle between the lifting frame 41 and the special-shaped frame 31 by rotating the steering wheel 245 in the support seat 23, thereby adjusting it to a suitable position and angle.

[0043] For adult patients of normal height, the heights of the bracket 51 and the lifting frame 41 are maintained at the initial state. First, the patient's head is placed on the bracket 51 of the auxiliary component 5, with the forehead resting 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, ensuring that the eye position is stable for subsequent inspections.

[0044] When the lighting device 44 is turned on, the light source is projected onto the patient's eyes through the projector 43. The projector 43 can be fine-tuned to accommodate different observation positions. The operator observes the patient's eyes through the eyepiece 32, the extension tube 345, and the lateral opening of the periscope tube 351. The prism holder 33 can also be adjusted so that the light can accurately pass through the prism to complete optical processes such as reflection, refraction, or dispersion as designed, thereby comprehensively examining the patient's eyes.

[0045] For minors with shorter height, their normal sitting posture is much lower than the initial position of the bracket 51. The handwheel 242 can be rotated to adjust the height of the bracket 51 and the lifting frame 41. The handwheel 242 drives the threaded rod 243 to rotate, so that the threaded sleeve 244 moves down to the bottom in the vertical column 241, and the lifting frame 41 moves down accordingly to adapt to patients with shorter height. 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.

[0046] Then the operator slides the periscope 351 down in the adjustment shell 341 by cooperating with the lifting slide button 352 and the lifting slide groove 342, and rotates the right-angle knob 355 to make the partition 354 close the horizontal opening of the periscope 351 and open the vertical opening to form a periscope device. The operator examines the patient's eyes through the eyepiece 32, the extension tube 345 and the vertical opening of the periscope 351, through the reflection of two high-definition mirrors 353, and can replace different lenses 344 at the replacement slot 346 by rotating the rotating shaft 343 to improve the clarity, thereby ensuring that the operator's line of sight remains unchanged.

[0047] For patients with taller height, their normal sitting position is much higher than the initial position of the bracket 51. The hand wheel 242 can be rotated to adjust the threaded sleeve 244 to move up to the top in the vertical column 241 to accommodate the taller patient.

[0048] Then, when the periscope 351 is in a vertically open state, the operator rotates the adjustment shell 341 to change the observation direction of the periscope device from downward to upward. In this way, eye examinations can be performed on patients with taller heights while ensuring that the operator's line of sight remains unchanged.

[0049] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention 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 invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A slit lamp microscope for general ophthalmological examination, comprising a base (1), a support mechanism (2) arranged above the base (1), and an observation mechanism (3) arranged above the support mechanism (2), characterized in that: The support mechanism (2) includes a slide (21) slidably connected to the top of the base (1), the top of the slide (21) is fixedly connected to a support seat (23), the observation mechanism (3) includes a special-shaped frame (31) fixedly installed on the top of the support seat (23), the top of the special-shaped frame (31) is fixedly connected to a prism seat (33), the outer wall of the prism seat (33) is rotatably connected to an adjustment component (34), and the interior of the adjustment component (34) is provided with a periscope component (35) for changing the observation position; The adjustment assembly (34) includes an adjustment housing (341) rotatably connected to the outer wall of the prism seat (33); an extension tube (345) is fixedly connected to the inner wall of the adjustment housing (341); a replacement groove (346) is provided on the inner wall of the extension tube (345); a rotating shaft (343) is rotatably connected to the inner wall of the adjustment housing (341); a plurality of evenly distributed lenses (344) are fixedly connected to the outer wall of the rotating shaft (343); any of the lenses (344) can be engaged with the inner wall of the replacement groove (346) by rotating the rotating shaft (343); and two symmetrically arranged lifting slots (342) are also provided on the inner wall of the adjustment housing (341).

2. The slit lamp microscope for general ophthalmological examination according to claim 1, characterized in that: The periscope assembly (35) includes two lifting slide buttons (352) respectively slidably connected to the inner walls of the two lifting slide grooves (342), a periscope tube (351) is fixedly connected between the two lifting slide buttons (352), the inner wall of the periscope tube (351) is rotatably connected to two right-angle knobs (355), the outer walls of the two right-angle knobs (355) are fixedly connected to a partition (354), and the inner wall of the periscope tube (351) is also fixedly connected to two high-definition reflectors (353) arranged symmetrically with the center.

3. The slit lamp microscope for general ophthalmological examination according to claim 2, characterized in that: An eyepiece (32) is also fixedly mounted on one end of the prism seat (33) away from the adjustment housing (341).

4. The slit lamp microscope for general ophthalmological examination according to claim 3, characterized in that: The support mechanism (2) further comprises a control handle (22) fixedly mounted inside the slide (21), and a lifting assembly (24) fixedly mounted on the top of the support seat (23).

5. The slit lamp microscope for general ophthalmological examination according to claim 4, characterized in that: The lifting assembly (24) comprises a vertical column (241) rotatably connected to the inner wall of the support seat (23); the inner wall of the vertical column (241) is rotatably connected to a threaded rod (243); the top of the threaded rod (243) is fixedly connected to a hand wheel (242); and the outer wall of the threaded rod (243) is threadedly connected to a threaded sleeve (244).

6. The slit lamp microscope for general ophthalmological examination according to claim 5, characterized in that: A steering wheel (245) is fixedly connected to the bottom of the vertical column (241), and the steering wheel (245) is rotatably connected to the inner wall of the support base (23). A lighting component (4) and an auxiliary component (5) are provided above the support base (23).

7. The slit lamp microscope for general ophthalmological examination according to claim 6, 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 to a fixing frame (42); and the top of the fixing frame (42) is fixedly connected to a projector (43) and a lighting device (44).

8. The slit lamp microscope for general ophthalmological examination according to claim 7, characterized in that: The auxiliary component (5) includes a bracket (51) fixedly connected to the outer wall of the lifting frame (41), the upper part of the bracket (51) is fixedly connected to the forehead support (53), the middle part of the bracket (51) is rotatably connected to two symmetrically arranged eye corner alignment plates (52), and the lower part of the bracket (51) is slidably connected to the chin support (54).

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