A multi-purpose portable ophthalmic examination device and method of use

Abstract

The application discloses a kind of multi-purpose portable ophthalmic examination device and method, it is related to medical equipment technical field, the scheme includes box, the inside of the box is equipped with two placing grooves, the inside of the placing groove is placed with eye detection device, the top of the box is hinged to be connected with lid, the inside of the box is sequentially embedded fixedly installed with two operation panels, the inside of the lid is embedded fixedly installed with display screen, two eye detection devices can be stored and fixed in the application, and it is convenient to carry and move, by being provided with display screen, operation panel and eye detection device, when using, eye detection condition can be directly displayed on display screen, manual observation is not needed, to reduce work burden, users can directly control eye detection device by operation panel, the position and angle of slit lamp can also be changed when using, to facilitate eye examination for different patients.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a multi-purpose portable ophthalmic examination device and its usage method. Background Technology

[0002] Ophthalmological examination is a general examination of the eye, including examination of the ocular adnexa and anterior segment. Examination of the ocular adnexa includes examining the eyelids, conjunctiva, lacrimal apparatus, eyeball position, and orbit. In ophthalmological examinations, slit lamps are frequently used to illuminate the eye. A search revealed Chinese Patent Publication No. CN117017203A, which discloses a portable ophthalmological examination device and its method of use. The examination device includes: a fixing structure, comprising a head strap and a chin strap; and an examination component, which has an examination area and includes: a connecting structure, a mounting body, a slit lamp, and a microscope; the objectives of the slit lamp and the microscope are both oriented towards the examination area.

[0003] While the aforementioned technical solutions can prevent doctors from shaking their hands due to holding the ophthalmic examination device for extended periods, thus greatly ensuring the accuracy of diagnosis, they are inconvenient to store and carry. Furthermore, medical staff must observe the microstructure themselves during the examination, but the patient's position makes it difficult for medical staff to observe, increasing their workload. Moreover, the slit lamp angle and illumination position often need to be changed during the examination, but the slit lamp position in the aforementioned technical solutions is fixed and cannot be adjusted, thus affecting the examination. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a multi-purpose portable ophthalmic examination device and its usage method, solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a multi-purpose portable ophthalmic examination device, comprising a housing, the interior of which has two placement slots, each containing an eye detection device; a lid is rotatably connected to the top of the housing via a hinge; two operation panels are sequentially and fixedly installed inside the housing; a display screen is embedded and fixedly installed inside the lid; both the eye detection device and the display screen are connected to their respective operation panels via wires; a clamping mechanism cooperating with the eye detection device is installed through the top of the lid; and a drawer is slidably connected to the front of the housing.

[0006] The eye detection device includes a support cover with an opening at the top. A sliding mechanism is installed inside the opening. A shielding mechanism connected to the sliding mechanism is installed between the two sides of the top of the support cover. A microscope camera mechanism is installed through one side of the outer surface of the sliding mechanism. A movable rotating illumination mechanism is installed inside the sliding mechanism. An area adjustment mechanism is fixedly installed at the bottom of the movable rotating illumination mechanism.

[0007] Preferably, an electric push rod is embedded and fixedly installed in the bottom of the placement slot, and a placement plate for placing an eye detection device is fixedly connected to the top of the electric push rod. The clamping mechanism includes a screw threaded through and connected to the upper surface of the box cover. A pressure plate is rotatably connected to the bottom of the screw. A sponge pad is fixed to the bottom of the pressure plate. A knob is fixedly connected to the top of the screw.

[0008] Through the above technical solution, the knob rotation can drive the screw to rotate, which in turn drives the pressure plate and sponge pad to move downwards, thereby pressing the corresponding eye detection device and preventing wobbling during movement. The electric push rod operation can drive the placement plate to move upwards, which can lift the eye detection device, making it easier to pick up the eye detection device.

[0009] Preferably, the sliding mechanism includes a slider slidably connected inside the opening, a first motor is fixedly installed on one side of the top of the support cover, a first one-way lead screw is fixedly connected to the output shaft of the first motor, a long strip is threadedly connected to the outer surface of the first one-way lead screw, one side of the long strip is fixedly connected to the outer surface of the slider, and both ends of the first one-way lead screw are rotatably connected to a fixed seat fixedly connected to the upper surface of the support cover.

[0010] Through the above technical solution, the rotation of the first motor drives the rotation of the first one-way lead screw, which in turn drives the long strip to move through the thread, thereby driving the slider to move. This allows the position of the microscope camera mechanism and the moving and rotating illumination mechanism to be changed without manual operation.

[0011] Preferably, the shielding mechanism includes storage frames symmetrically fixedly connected to both sides of the top of the support cover. A winding shaft is rotatably connected inside the storage frame. Coil springs are fixedly connected between the two ends of the winding shaft and the inner wall of the storage frame. A shielding cloth is wound around the outer surface of the winding shaft. A travel groove communicating with the opening is opened inside the support cover. One end of the shielding cloth passes through the travel groove and is fixedly connected to the outer surface of the slider. Stops that are slidably connected to the inside of the travel groove are fixedly connected to both sides of the outer surface of the slider.

[0012] With the above technical solution, when the slider moves, the shielding cloth on both sides will move with the slider. Under the action of the coil spring, it can be automatically rolled up and will not be exposed to the outside, thus avoiding being affected.

[0013] Preferably, the microscope camera mechanism includes a mounting hole on the top of the slider, in which a miniature microscope is embedded and fixedly mounted, and a support cylinder that cooperates with the miniature microscope is fixedly connected to the top of the slider, and a camera is fixedly mounted on the top of the support cylinder.

[0014] The above technical solution allows the camera to capture images from a miniature microscope and display them on a screen, eliminating the need for manual observation and making it easier to use.

[0015] Preferably, the movable rotating illumination mechanism includes a first long groove and a second long groove sequentially formed at the bottom of the slider. A second motor is embedded and fixedly installed on one side of the inner wall of the first long groove. The output shaft of the second motor is fixedly connected to a second one-way lead screw. A movable block that is slidably connected to the inner wall of the first long groove is threadedly connected to the outer surface of the second one-way lead screw. A third motor is fixedly installed on one side of the outer surface of the movable block. A slit lamp is fixedly connected to the output shaft of the third motor.

[0016] Through the above technical solution, the rotation of the second motor and the third motor can drive the slit lamp to move and rotate respectively, thereby changing the illumination position and angle of the slit lamp.

[0017] Preferably, the area adjustment mechanism includes a support plate fixedly sleeved on the bottom end of the slit lamp, a rectangular frame fixedly connected to the bottom end of the support plate, a fourth motor fixedly installed on both adjacent sides of the outer surface of the rectangular frame, the two fourth motors being staggered, the output shafts of the two fourth motors being fixedly connected to a bidirectional lead screw, and two baffles symmetrically threaded to the outer surface of the bidirectional lead screw and slidably connected to the inner wall of the rectangular frame.

[0018] Through the above technical solution, the rotation of the two fourth motors can drive the corresponding two shields to move relative to each other, which can change the illumination area of ​​the slit lamp, thereby changing the slit width and facilitating inspection.

[0019] A method of using a multi-purpose portable ophthalmic examination device includes the following steps:

[0020] S1. Open the box lid, and then select one or two eye examination devices according to the patient's eye examination needs;

[0021] S2. Place the corresponding eye detection device on the eye of the patient to be examined, and connect it to the corresponding operation panel through wires. At this time, the display screen can play the image captured by the camera.

[0022] S3. Adjust the sliding mechanism, the moving and rotating illumination mechanism, and the area adjustment mechanism according to the patient's eye detection position. The operation of the sliding mechanism can drive the microscope camera mechanism and the moving and rotating illumination mechanism to move horizontally, which facilitates the positioning of the patient's eye. The operation of the moving and rotating illumination mechanism can change the illumination angle and position, which facilitates the examination of different positions. The operation of the area adjustment mechanism can change the illumination area, which facilitates the adjustment of the slit width.

[0023] S4. After the inspection is completed, the eye detection device can be placed in the corresponding slot, then the lid can be closed and the corresponding knob can be turned to press and fix the eye detection device. Then the entire box can be moved for easy carrying.

[0024] This invention provides a multi-purpose portable ophthalmic examination device and its usage method. It has the following beneficial effects:

[0025] 1. The present invention relates to a multi-purpose portable ophthalmic examination device and its method of use. Through the provided housing, placement slot, lid and clamping mechanism, two eye examination devices can be stored and fixed, which not only prevents shaking during movement, but also makes it convenient to carry and move.

[0026] 2. This multi-purpose portable ophthalmic examination device and its usage method, through the set display screen, operation panel and eye detection device, can directly display the eye detection status on the display screen during use, without the need for manual observation, thereby reducing the workload. In addition, the user can directly control the eye detection device through the operation panel without manual adjustment, thereby further reducing the workload. Moreover, the position and angle of the slit lamp can be changed during use, which is convenient for eye examinations of different patients, making it more practical. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the opening structure of the present invention;

[0029] Figure 3 This is a schematic diagram of the internal structure of the housing of the present invention;

[0030] Figure 4 This is a schematic diagram of the pressing mechanism of the present invention;

[0031] Figure 5 This is a schematic diagram of the eye detection device of the present invention;

[0032] Figure 6 This is a schematic diagram of the sliding mechanism of the present invention;

[0033] Figure 7 This is a schematic diagram of the shielding mechanism of the present invention;

[0034] Figure 8 This is a schematic diagram of the slider structure of the present invention;

[0035] Figure 9 This is a partial structural schematic diagram of the microscope camera mechanism of the present invention;

[0036] Figure 10 This is a schematic diagram of the internal structure of the slider of the present invention;

[0037] Figure 11 This is a partial structural schematic diagram of the movable rotating illumination mechanism of the present invention;

[0038] Figure 12 This is a partial structural schematic diagram of the area adjustment mechanism of the present invention.

[0039] In the diagram, 1. Box body; 2. Placement slot; 21. Electric push rod; 22. Placement plate; 3. Eye detection device; 31. Support cover; 32. Opening; 33. Sliding mechanism; 331. Slider; 332. First motor; 333. First one-way lead screw; 334. Long strip; 335. Fixing base; 34. Shielding mechanism; 341. Storage frame; 342. Rewinding shaft; 343. Shielding cloth; 344. Stroke groove; 345. Stop block; 35. Microscope mechanism; 351. Mounting hole; 352. Miniature microscope; 353. Support cylinder; 354. 36. Camera; 36. Moving and rotating lighting mechanism; 361. First long slot; 362. Second long slot; 363. Second motor; 364. Second one-way lead screw; 365. Moving block; 366. Third motor; 367. Slit lamp; 37. Area adjustment mechanism; 371. Support plate; 372. Rectangular frame; 373. Fourth motor; 374. Two-way lead screw; 375. Cover plate; 4. Box cover; 5. Operation panel; 6. Display screen; 7. Pressing mechanism; 71. Screw; 72. Pressure plate; 73. Sponge pad; 74. Knob; 8. Drawer. Detailed Implementation

[0040] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0041] Example 1:

[0042] like Figure 1 and Figure 2As shown, a multi-purpose portable ophthalmic examination device includes a housing 1. The housing 1 has two placement slots 2 inside, where an eye detection device 3 is placed. A lid 4 is rotatably connected to the top of the housing 1 via a hinge. Two operation panels 5 are sequentially and fixedly installed inside the housing 1. A display screen 6 is embedded and fixedly installed inside the lid 4. Both the eye detection device 3 and the display screen 6 are connected to their respective operation panels 5 via wires. A clamping mechanism 7, which cooperates with the eye detection device 3, is installed through the top of the lid 4. A drawer 8 is slidably connected to the front of the housing 1.

[0043] When in use, the appropriate number of eye detection devices 3 can be selected according to the patient's required eye examination. There is no need to use the whole device. Furthermore, the eye condition can be directly displayed on the screen 6 during use, eliminating the need for manual observation. This makes the device convenient to use and solves the problem of increased workload for medical staff due to the need for manual observation of existing devices.

[0044] Example 2:

[0045] like Figure 3 and Figure 4 As shown, an electric push rod 21 is embedded and fixedly installed in the bottom of the placement slot 2. The top of the electric push rod 21 is fixedly connected to a placement plate 22 for placing the eye detection device 3. The clamping mechanism 7 includes a screw 71 that is threaded through and connected to the upper surface of the box cover 4. The bottom end of the screw 71 is rotatably connected to a pressure plate 72. The bottom end of the pressure plate 72 is fixed with a sponge pad 73. The top end of the screw 71 is fixedly connected to a knob 74.

[0046] Example 3:

[0047] like Figures 5 to 7 As shown, the eye detection device 3 includes a support cover 31, with an opening 32 at the top of the support cover 31. A sliding mechanism 33 is installed inside the opening 32. The sliding mechanism 33 includes a slider 331 slidably connected inside the opening 32. A first motor 332 is fixedly installed on one side of the top of the support cover 31. A first one-way lead screw 333 is fixedly connected to the output shaft of the first motor 332. A long strip 334 is threaded onto the outer surface of the first one-way lead screw 333. One side of the long strip 334 is fixedly connected to the outer surface of the slider 331. Both ends of the first one-way lead screw 333 are rotatably connected to a fixing seat 335 fixedly connected to the upper surface of the support cover 31.

[0048] A shielding mechanism 34 connected to a sliding mechanism 33 is installed between the top two sides of the support cover 31. The shielding mechanism 34 includes a storage frame 341 symmetrically fixedly connected to the top two sides of the support cover 31. A winding shaft 342 is rotatably connected inside the storage frame 341. Coil springs are fixedly connected between the two ends of the winding shaft 342 and the inner wall of the storage frame 341. A shielding cloth 343 is wound around the outer surface of the winding shaft 342. A travel groove 344 communicating with the opening 32 is opened inside the support cover 31. One end of the shielding cloth 343 passes through the travel groove 344 and is fixedly connected to the outer surface of the slider 331. Stops 345 that are slidably connected inside the travel groove 344 are fixedly connected to both sides of the outer surface of the slider 331.

[0049] The first motor 332 rotates, driving the first one-way lead screw 333 to rotate. Through the thread, the long strip 334 moves, which in turn moves the slider 331. This changes the position of the microscope camera mechanism 35 and the moving and rotating illumination mechanism 36 without manual operation. When the slider 331 moves, the shielding cloths 343 on both sides move with the slider 331. Under the action of the coil spring, they can be automatically rolled up and will not be exposed to the outside, thus avoiding being affected.

[0050] Example 4:

[0051] like Figure 8 and Figure 9 As shown, a microscope camera mechanism 35 is installed through one side of the outer surface of the sliding mechanism 33. The microscope camera mechanism 35 includes a mounting hole 351 opened on the top of the slider 331. A miniature microscope 352 is embedded and fixedly installed inside the mounting hole 351. A support cylinder 353 that cooperates with the miniature microscope 352 is fixedly connected to the top of the slider 331. A camera 354 is fixedly installed on the top of the support cylinder 353.

[0052] The camera 354 can capture images in the miniature microscope 352 and then display them on the display screen 6, eliminating the need for manual observation and making it easy to use.

[0053] Example 5:

[0054] like Figure 10 and Figure 11As shown, a movable rotating illumination mechanism 36 is installed inside the sliding mechanism 33. The movable rotating illumination mechanism 36 includes a first long groove 361 and a second long groove 362 sequentially formed at the bottom of the slider 331. A second motor 363 is embedded and fixedly installed on one side of the inner wall of the first long groove 361. The output shaft of the second motor 363 is fixedly connected to a second one-way lead screw 364. A moving block 365 that is slidably connected to the inner wall of the first long groove 361 is threadedly connected to the outer surface of the second one-way lead screw 364. A third motor 366 is fixedly installed on one side of the outer surface of the moving block 365. A slit lamp 367 is fixedly connected to the output shaft of the third motor 366.

[0055] The rotation of the second motor 363 and the third motor 366 can drive the slit lamp 367 to move and rotate, thereby changing the illumination position and angle of the slit lamp 367, thus solving the problem that the existing device cannot change the illumination angle and position.

[0056] Example 6:

[0057] like Figure 11 and Figure 12 As shown, an area adjustment mechanism 37 is fixedly installed at the bottom of the movable rotating illumination mechanism 36. The area adjustment mechanism 37 includes a support plate 371 fixedly sleeved on the bottom of the slit lamp 367. A rectangular frame 372 is fixedly connected to the bottom of the support plate 371. A fourth motor 373 is fixedly installed on both adjacent sides of the outer surface of the rectangular frame 372. The two fourth motors 373 are staggered. The output shafts of the two fourth motors 373 are fixedly connected to a bidirectional lead screw 374. The outer surface of the bidirectional lead screw 374 is symmetrically threaded with two shielding plates 375 that are slidably connected to the inner wall of the rectangular frame 372.

[0058] The rotation of the two fourth motors 373 can drive the corresponding two baffles 375 to move relative to each other, which can change the illumination area of ​​the slit lamp 367, thereby changing the slit width and facilitating inspection.

[0059] Example 7:

[0060] like Figures 1 to 12 As shown, a method of using a multi-purpose portable ophthalmic examination device includes the following steps:

[0061] S1. Open the box cover 4, and then select one or two eye testing devices 3 according to the patient's eye examination needs;

[0062] S2. Place the corresponding eye detection device 3 on the eye of the patient to be examined, and connect it to the corresponding operation panel 5 through wires. At this time, the display screen 6 can play the image captured by the camera 354.

[0063] S3. According to the patient's eye detection position, adjust the sliding mechanism 33, the moving and rotating illumination mechanism 36 and the area adjustment mechanism 37 respectively. The operation of the sliding mechanism 33 can drive the microscope camera mechanism 35 and the moving and rotating illumination mechanism 36 to move horizontally, so as to facilitate the positioning of the patient's eye. The operation of the moving and rotating illumination mechanism 36 can change the illumination angle and position, so as to facilitate the examination of different positions. The operation of the area adjustment mechanism 37 can change the illumination area, so as to facilitate the adjustment of the slit width.

[0064] S4. After the inspection is completed, the eye detection device 3 can be placed in the corresponding placement slot 2, then the box cover 4 can be closed and the corresponding knob 74 can be turned to press and fix the eye detection device 3. Then the box 1 can be moved as a whole for easy carrying.

[0065] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A multi-purpose portable ophthalmic examination device, comprising a housing (1), characterized in that: The box (1) has two placement slots (2) inside, and an eye detection device (3) is placed inside the placement slots (2). The top hinge of the box (1) is rotatably connected to a box cover (4). The box (1) has two operation panels (5) embedded and fixedly installed in sequence inside. The box cover (4) has a display screen (6) embedded and fixedly installed inside. The eye detection device (3) and the display screen (6) are both connected to the corresponding operation panels (5) through wires. The top of the box cover (4) is fitted with a pressing mechanism (7) that cooperates with the eye detection device (3). The front side of the box (1) has a drawer (8) slidably connected to it. The eye detection device (3) includes a support cover (31), the top of the support cover (31) has an opening (32), a sliding mechanism (33) is installed inside the opening (32), a shielding mechanism (34) connected to the sliding mechanism (33) is installed between the two sides of the top of the support cover (31), a microscope camera mechanism (35) is installed through one side of the outer surface of the sliding mechanism (33), a moving and rotating illumination mechanism (36) is installed inside the sliding mechanism (33), and an area adjustment mechanism (37) is fixedly installed at the bottom end of the moving and rotating illumination mechanism (36).

2. The multi-purpose portable ophthalmic examination device according to claim 1, characterized in that: An electric push rod (21) is embedded and fixedly installed in the bottom of the placement slot (2). The top of the electric push rod (21) is fixedly connected to a placement plate (22) for placing the eye detection device (3). The clamping mechanism (7) includes a screw (71) that is threaded through and connected to the upper surface of the box cover (4). The bottom end of the screw (71) is rotatably connected to a pressure plate (72). The bottom end of the pressure plate (72) is fixed with a sponge pad (73). The top end of the screw (71) is fixedly connected to a knob (74).

3. The multi-purpose portable ophthalmic examination device according to claim 1, characterized in that: The sliding mechanism (33) includes a slider (331) slidably connected inside the opening (32). A first motor (332) is fixedly installed on one side of the top of the support cover (31). The output shaft of the first motor (332) is fixedly connected to a first one-way screw (333). A long strip (334) is threadedly connected to the outer surface of the first one-way screw (333). One side of the long strip (334) is fixedly connected to the outer surface of the slider (331). Both ends of the first one-way screw (333) are rotatably connected to a fixed seat (335) fixedly connected to the upper surface of the support cover (31).

4. The multi-purpose portable ophthalmic examination device according to claim 3, characterized in that: The shielding mechanism (34) includes a storage frame (341) symmetrically fixedly connected to the top two sides of the support cover (31). A winding shaft (342) is rotatably connected inside the storage frame (341). A coil spring is fixedly connected between the two ends of the winding shaft (342) and the inner wall of the storage frame (341). A shielding cloth (343) is wound around the outer surface of the winding shaft (342). A travel groove (344) communicating with the opening (32) is opened inside the support cover (31). One end of the shielding cloth (343) passes through the travel groove (344) and is fixedly connected to the outer surface of the slider (331). Both sides of the outer surface of the slider (331) are fixedly connected to a stop block (345) that is slidably connected to the inside of the travel groove (344).

5. The multi-purpose portable ophthalmic examination device according to claim 3, characterized in that: The microscope camera mechanism (35) includes a mounting hole (351) on the top of the slider (331), in which a miniature microscope (352) is embedded and fixedly mounted. A support cylinder (353) that cooperates with the miniature microscope (352) is fixedly connected to the top of the slider (331), and a camera (354) is fixedly mounted on the top of the support cylinder (353).

6. The multi-purpose portable ophthalmic examination device according to claim 3, characterized in that: The movable rotating illumination mechanism (36) includes a first long groove (361) and a second long groove (362) sequentially formed at the bottom of the slider (331). A second motor (363) is embedded and fixedly installed on one side of the inner wall of the first long groove (361). The output shaft of the second motor (363) is fixedly connected to a second one-way lead screw (364). The outer surface of the second one-way lead screw (364) is threadedly connected to a moving block (365) that is slidably connected to the inner wall of the first long groove (361). A third motor (366) is fixedly installed on one side of the outer surface of the moving block (365). The output shaft of the third motor (366) is fixedly connected to a slit lamp (367).

7. The multi-purpose portable ophthalmic examination device according to claim 6, characterized in that: The area adjustment mechanism (37) includes a support plate (371) fixedly sleeved on the bottom end of the slit lamp (367). A rectangular frame (372) is fixedly connected to the bottom end of the support plate (371). A fourth motor (373) is fixedly installed on both adjacent sides of the outer surface of the rectangular frame (372). The two fourth motors (373) are staggered. The output shafts of the two fourth motors (373) are fixedly connected to a bidirectional lead screw (374). The outer surface of the bidirectional lead screw (374) is symmetrically threaded with two baffles (375) that slide in connection with the inner wall of the rectangular frame (372).

8. A method of using a multi-purpose portable ophthalmic examination device, comprising the multi-purpose portable ophthalmic examination device as described in any one of claims 1-7, characterized in that: Includes the following steps: S1. Open the box cover (4), and then select one or two eye examination devices (3) according to the patient's eye examination needs; S2. Place the corresponding eye detection device (3) on the eye that the patient needs to examine, and connect it to the corresponding operation panel (5) through a wire. At this time, the display screen (6) can play the image captured by the camera (354). S3. According to the patient's eye detection position, adjust the sliding mechanism (33), the moving and rotating illumination mechanism (36), and the area adjustment mechanism (37) respectively. The operation of the sliding mechanism (33) can drive the microscope camera mechanism (35) and the moving and rotating illumination mechanism (36) to move horizontally, so as to facilitate the positioning of the patient's eye. The operation of the moving and rotating illumination mechanism (36) can change the illumination angle and position, so as to facilitate the examination of different positions. The operation of the area adjustment mechanism (37) can change the illumination area, so as to facilitate the adjustment of the slit width. S4. After the inspection is completed, the eye detection device (3) can be placed in the corresponding placement slot (2), then the box cover (4) can be closed and the corresponding knob (74) can be turned to press and fix the eye detection device (3). Then the box (1) can be moved as a whole for easy carrying.

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