Eyelid examination spreader for ophthalmology department

Abstract

The invention relates to the technical field of ophthalmologic instruments, in particular to an ophthalmologic eyelid examination spreader which comprises a mounting frame for a patient to wear, the mounting frame comprises a first mounting rod and a second mounting rod which are symmetrically arranged, and a plurality of supporting blocks are horizontally and slidably matched with the first mounting rod and the second mounting rod respectively; sliding rods are in vertical sliding fit between the supporting blocks and the first mounting block and between the supporting blocks and the second mounting block. A deformable contact block is arranged between every two adjacent supporting blocks. An adjusting mechanism for adjusting the distance between the adjacent contact blocks is arranged between the adjacent first mounting rod and second mounting rod; a skin adsorption mechanism used for assisting in pulling eyelids is further arranged on the sliding rod in a sliding fit mode. A liquid storage cavity and a liquid outlet hole are formed in the contact block; a hollow pipe is arranged in the sliding rod and communicates with an opening control mechanism used for controlling the size of the liquid outlet hole based on sliding of the sliding rod. The eyelid supporting device is used for keeping eyes moist in the eyelid supporting process, reducing discomfort of a patient and improving supporting stability.

Description

Technical Field

[0001] The invention relates to the technical field of ophthalmic instruments, and in particular to an eyelid inspection stretcher for ophthalmology. Background Art

[0002] During ophthalmic surgery or examination, an eyelid speculum is usually needed to open the patient's upper and lower eyelids to allow a clearer view of the eye structure, ensuring accuracy and safety of diagnosis and treatment.

[0003] During the use of the eyelid spreader, aseptic operation should be strictly followed to prevent eye infection. It is also necessary to appropriately adjust the size of the spreader's opening according to the patient's eyelid size and surgical needs to avoid over-opening the eyelids, which may cause discomfort or injury to the patient. However, since the eyelid spreader uses a certain amount of force to open the eyelids, it will bring a certain amount of pressure to the eyelids of the supporting part and may cause tearing damage, and long-term use will lead to dryness and discomfort in the eyes. Discomfort will prompt the patient to want to blink or move the eyeball, thereby interfering with surgery or examination. Therefore, the present invention provides an eyelid inspection spreader that automatically keeps the eyes moist, reduces the patient's discomfort during the eyelid support process, and thereby improves the stability of the support. Summary of the invention

[0004] In order to solve the above problems, the present invention provides an ophthalmic eyelid examination stretcher, which is used to keep the eyes moist during the eyelid support process, reduce the patient's discomfort, and improve the support stability.

[0005] In order to achieve the above-mentioned object, the technical solution of the present invention is as follows: an eyelid inspection retractor for ophthalmology, comprising a mounting frame for patients to wear, the mounting frame comprising a first mounting rod and a second mounting rod arranged symmetrically, a plurality of support blocks respectively slidably matched horizontally on the first mounting rod and the second mounting rod, a sliding rod is vertically slidably matched between the support blocks and the first mounting block and the second mounting block, a deformable contact block is arranged between adjacent support blocks, and the contact blocks are respectively hinged to the support blocks;

[0006] An adjustment mechanism is provided between adjacent first mounting rods and second mounting rods, and the adjustment mechanism is used to adjust the spacing between adjacent contact blocks;

[0007] The slide bar is also slidably equipped with a skin suction mechanism for assisting in pulling the eyelids;

[0008] A liquid storage cavity is provided in the contact block, and a plurality of liquid outlet holes are connected to the bottom of the liquid storage cavity; a hollow tube is provided inside the slide bar, and the hollow tube is connected to an opening control mechanism for controlling the size of the liquid outlet hole based on the sliding of the slide bar.

[0009] The technical principle of the above scheme is as follows: first, the device is worn on the patient's head through the mounting frame, and then the horizontal distance of the support block is adjusted to adjust the contact area between the contact blocks on both sides and the patient during use, and then the adjustment mechanism is used to control the distance between the contact blocks when driving the upper and lower eyelids to move. At the same time, the skin adsorption mechanism is used to relieve the support pressure during the support process to reduce possible injuries; at the same time, the movement of the slider is used to control the amount of discharged liquid to keep the eyes moist.

[0010] The above scheme has the following beneficial effects:

[0011] 1. In this solution, the device is fixed on the patient's head by the first mounting rod and the second mounting rod, providing a stable support space for subsequent expansion adjustment, thereby freeing the doctor's hands, so that the patient can perform more operations during the examination or operation, which is convenient for the examination or operation.

[0012] 2. This solution uses a deformable contact block to adapt to the eyelid amplitude requirements of different patients, thereby forming an overall eyelid curvature support, thereby reducing the pressure on the local eyelid during the eyelid support process, thereby reducing the occurrence of possible eyelid tearing injuries.

[0013] 3. Compared with the prior art, this solution replenishes liquid based on the change in the distance between the upper and lower eyelids during the support process to determine the exposed area of ​​the eye, which has a good eyeball moistening effect and reduces the patient's comfort during use.

[0014] Furthermore, the adjustment mechanism includes a U-shaped spring sheet, which is parallel to the centers of the first mounting rod and the second mounting rod; one end of the spring sheet is clamped with a support block close to the first mounting rod, and the other end of the spring sheet is clamped with a support block close to the second mounting rod, and the spring sheet and the support block are clearance-matched; the center of the spring sheet is fixedly connected to the mounting frame.

[0015] Beneficial effect: By installing the spring sheet on the mounting frame, the doctor can adjust the horizontal support distance between the two support blocks to adapt to the change of the eyelid curvature of the patient. Then, based on the elastic force of the spring sheet, the support blocks are pushed to move to both sides to open the upper and lower eyelids, so that the doctor can observe the eye structure.

[0016] Further, the opening control mechanism includes a piston that is slidably matched with the hollow tube, and one end of the piston away from the support block is fixedly connected to the first mounting rod or the second mounting rod respectively;

[0017] The gap in the liquid storage cavity is equipped with a pressure plate for closing the liquid outlet hole, a pressure rod is fixedly connected to the top of the pressure plate, a pressure regulating cavity corresponding to the pressure rod is opened in the support block, the pressure rod passes through the support block and is located in the regulating cavity, a partition is fixedly connected to the pressure rod, springs are provided on the partition and the top of the support block, the pressure regulating cavity is also connected to a pressure regulating pipe, the pressure regulating pipe is located on the side of the partition away from the spring, and the other end of the pressure regulating pipe is connected to the hollow tube.

[0018] Beneficial effect: When the distance between adjacent contact blocks increases, it indicates that the larger the exposed area of ​​the patient's eyes, the greater the evaporation of the eye fluid, making the patient's eyes more susceptible to dryness and discomfort. By pushing the piston to pump liquid into the pressure regulating chamber, the partition drives the pressure rod and the pressure plate to move upward to loosen the closure of the pressure plate on the liquid outlet, thereby adjusting the liquid output of the liquid storage tube to adapt to the increase in the exposed area of ​​the eyes and reduce the patient's discomfort.

[0019] Furthermore, a rubber pad is sleeved on the pressure rod, and the rubber pad is located between the pressure rod and the pressure regulating chamber.

[0020] Beneficial effect: The gap between the pressure rod and the pressure regulating chamber is filled with a rubber pad to ensure the sealing of the pressure regulating chamber and reduce the leakage of liquid inside the pressure regulating chamber.

[0021] Furthermore, the skin adsorption mechanism includes a suction cup that is slidably matched with the slide rod, a suction tube is connected at the center of the suction cup, and the suction cup is rotatable;

[0022] A negative pressure chamber is also provided in the sliding rod, which is located at the end of the sliding rod away from the support block. A sliding block is connected to the negative pressure chamber, and the sliding block slides in cooperation with the negative pressure chamber. The sliding block is fixedly connected to the first mounting rod and the second mounting rod respectively. The end of the suction tube away from the suction cup is connected to the negative pressure chamber.

[0023] Beneficial effect: The sliding rod drives the slider to slide in the negative pressure chamber, thereby increasing the space inside the negative pressure chamber to form negative pressure suction, which sucks the air inside the suction cup through the straw to form negative pressure suction and adsorbs the suction cup to the eyelid, thereby reducing the pressure of the contact block and the eyelid support process, thereby reducing possible tearing injuries.

[0024] Furthermore, a central block is provided between adjacent spring sheets, the central block is fixedly connected to the mounting frame, sliding rods are provided on both sides of the central block, the sliding rods include a first rod and a second rod, the first rod is rotatably matched with the central block, and the second rod is located inside the first rod;

[0025] A slider is hinged at one end of the second rod away from the first rod, a slide groove is provided on the spring sheet, the slider is located in the slide groove, and the slider and the slide groove are slidably matched, a through groove is provided on the first rod, a positioning pin is threadedly connected on the second rod, and the positioning pin is slidably matched with the first rod.

[0026] Beneficial effect: The central block and the spring sheet are connected by a sliding rod to control the rotation angle of the spring sheet, thereby adjusting the spacing between adjacent contact blocks. The second rod is used to slide inside the first rod to control the extension length of the second rod, thereby controlling the rotation angle between adjacent spring sheets to limit the maximum movement spacing of the spring sheets.

[0027] Furthermore, the first mounting rod and the second mounting rod are slidably matched with an inverted Y-shaped placement block, and the placement block is threadedly connected with a first bolt for fixing the placement block.

[0028] Beneficial effects: The placement block is used to snap-fit ​​and fix the patient's nose bridge to form a central support, thereby improving the stability of the first mounting rod and the second mounting rod. At the same time, the movable placement block is used to adjust the pupil distance for different patients. The first bolt is used to abut against the first mounting rod and the second mounting rod, thereby ensuring that the placement block is snap-fit ​​and fixed to the patient's nose bridge.

[0029] Furthermore, a clamping groove is provided on the central block, the top of the clamping groove is communicated with the outside, and the clamping groove is fully matched with the spring sheet.

[0030] Beneficial effect: The clearance between the spring sheet and the clamping groove facilitates the replacement of the spring sheet, and facilitates the subsequent maintenance of the spring sheet. At the same time, by replacing spring sheets with different elastic hardness to form different pressures to support the eyelids, the appropriate elastic force can be selected to support different patients.

[0031] Furthermore, both sides of the mounting frame are fixedly connected with elastic bands, a side of the elastic band away from the mounting frame is fixedly connected with Velcro, and adjacent elastic bands are fixedly connected by the Velcro.

[0032] Beneficial effect: The length is adjusted by the Velcro on the elastic band to meet the fixing needs of different head diameters and ensure the stability of the mounting frame.

[0033] Furthermore, the contact block is clamped with a contact layer away from the supporting block.

[0034] Beneficial effect: The replaceable contact layer facilitates one-patient-one-use, thereby reducing the risk of infection after use.

[0035] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 An axonometric view of an embodiment of an eyelid inspection retractor for ophthalmology of the present invention;

[0037] Figure 2A top view of an embodiment of an eyelid inspection retractor for ophthalmology of the present invention;

[0038] Figure 3 A front view of an embodiment of an eyelid inspection retractor for ophthalmology of the present invention;

[0039] Figure 4 for Figure 3 Partial cross-sectional view along the AA axis;

[0040] Figure 5 for Figure 3 Enlarged view of part B in the middle.

[0041] The figure marks in the drawings of the specification include: 1. mounting frame; 11. first mounting rod; 12. second mounting rod; 13. placement block; 14. clamping groove; 2. center block; 21. first rod; 22. second rod; 23. positioning pin; 24. through groove; 3. support block; 31. sliding rod; 311. hollow tube; 312. piston; 313. negative pressure chamber; 32. contact block; 321. liquid storage chamber; 322. pressure plate; 323. liquid outlet; 33. contact layer; 34. pressure regulating chamber; 341. pressure rod; 342. partition; 343. spring; 345. pressure regulating tube; 35. suction cup; 36. suction tube; 4. spring sheet. DETAILED DESCRIPTION

[0042] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0044] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] The following is further described in detail through specific implementation methods:

[0046] Embodiment 1:

[0047] As attached Figures 1 to 5 Shown is: an ophthalmic eyelid examination retractor, comprising a mounting frame 1 for patients to wear, elastic bands (not shown in the figure) are bonded to both sides of the mounting frame 1, Velcro is bonded to the side of the elastic band away from the mounting frame 1, and adjacent elastic bands are bonded by Velcro.

[0048] The mounting frame 1 includes a symmetrically arranged first mounting rod 11 and a second mounting rod 12, and a plurality of support blocks 3 are respectively slidably matched with each other horizontally on the first mounting rod 11 and the second mounting rod 12, and a slide bar 31 is vertically slidably matched with each of the support blocks 3 and the first mounting block and the second mounting block, and a deformable contact block 32 is provided between adjacent support blocks 3, and the contact blocks 32 are respectively hinged with the support blocks 3, and the contact blocks 32 are clamped with a contact layer 33 away from the support blocks 3. In addition, the first mounting rod 11 and the second mounting rod 12 are also slidably matched with an inverted Y-shaped placement block 13, and the placement block 13 is threadedly connected with a first bolt (not shown in the figure) for fixing the placement block 13.

[0049] An adjustment mechanism is provided between the adjacent first mounting rods 11 and the second mounting rods 12, and the adjustment mechanism is used to adjust the spacing between adjacent contact blocks 32; the adjustment mechanism includes a U-shaped spring sheet 4, and the spring sheet 4 is parallel to the centers of the first mounting rod 11 and the second mounting rod 12; one end of the spring sheet 4 is clamped with the support block 3 close to the first mounting rod 11, and the other end of the spring sheet 4 is clamped with the support block 3 close to the second mounting rod 12, and the spring sheet 4 and the support block 3 are clearance-matched.

[0050] A center block 2 is provided between adjacent spring sheets 4, the center block 2 is welded to the mounting frame 1, sliding rods are provided on both sides of the center block 2, the sliding rods include a first rod 21 and a second rod 22, the first rod 21 is rotatably matched with the center block 2, and the second rod 22 is located inside the first rod 21; a slider (not shown in the figure) is hinged at one end of the second rod 22 away from the first rod 21, a slide groove (not shown in the figure) is provided on the spring sheet 4, the slider is located in the slide groove, and the slider is slidably matched with the slide groove, a through groove 24 is provided on the first rod 21, a positioning pin 23 is threadedly connected to the second rod 22, and the positioning pin 23 is slidably matched with the first rod 21.

[0051] A liquid storage cavity 321 is provided in the contact block 32 , and a plurality of liquid outlet holes 323 are connected to the bottom of the liquid storage cavity 321 ; a hollow tube 311 is provided inside the slide bar 31 , and the hollow tube 311 is connected to an opening control mechanism for controlling the size of the liquid outlet holes 323 based on the sliding of the slide bar 31 .

[0052] Among them, the opening control mechanism includes a piston 312 that is slidably matched with the hollow tube 311, and the end of the piston 312 away from the support block 3 is welded to the first mounting rod 11 or the second mounting rod 12 respectively; a pressure plate 322 for closing the liquid outlet hole 323 is matched in the gap in the liquid storage chamber 321, and a pressure rod 341 is welded on the top of the pressure plate 322, and a rubber pad (not shown in the figure) is also sleeved on the pressure rod 341, and the rubber pad is located between the pressure rod 341 and the pressure regulating chamber 34; a pressure regulating chamber 34 corresponding to the pressure rod 341 is opened in the support block 3, the pressure rod 341 passes through the support block 3 and is located in the regulating chamber, a partition 342 is welded on the pressure rod 341, and a spring 343 is provided at the partition 342 and the top of the support block 3, and the pressure regulating chamber 34 is also connected to a pressure regulating pipe 345, and the pressure regulating pipe 345 is located on the side of the partition 342 away from the spring 343, and the other end of the pressure regulating pipe 345 is connected to the hollow tube 311.

[0053] The slide bar 31 is also slidably fitted with a skin adsorption mechanism for assisting in pulling the eyelids; the skin adsorption mechanism includes a suction cup 35 slidably fitted with the slide bar 31, a suction tube 36 is connected at the center of the suction cup 35, and the suction cup 35 is rotatable; a negative pressure chamber 313 is also opened in the slide bar 31, the negative pressure chamber 313 is located at the end of the slide bar 31 away from the support block 3, a slider is connected in the negative pressure chamber 313, and the slider is slidably fitted with the negative pressure chamber 313; the sliders are fixedly connected to the first mounting rod 11 and the second mounting rod 12 respectively; the end of the suction tube 36 away from the suction cup 35 is connected to the negative pressure chamber 313.

[0054] The specific implementation process is as follows: before use, the Velcro fixing position on the elastic band is adjusted based on the patient's head circumference to meet the fixing needs of different head circumference diameters and ensure the stability of the mounting frame 1. Based on the patient's interocular distance, the placement block 13 is engaged and fixed with the patient's nose bridge to improve the overall stability of the device; then the horizontal distance between adjacent support blocks 3 is adjusted to adjust the contact area between the contact layer 33 and the patient during use, and then the replaceable contact layer 33 is used to facilitate one patient to use, thereby reducing the risk of infection after use.

[0055] In use, by keeping the spring sheet 4 in a horizontal state with the eye, it is convenient to keep the spring sheet 4 in the center of the eye, so that the subsequent contact block 32 gradually moves to the upper and lower sides of the eye. Based on the restoring elastic force of the spring sheet 4, the support block 3 is pushed to move to both sides to open the upper and lower eyelids so that the doctor can observe the eye structure. At the same time, the spring sheet 4 is fixed at one side of the corner of the eye to reduce the occlusion of the instrument during the doctor's observation process, so as to facilitate observation.

[0056] During the support process of the spring sheet 4, the second rod 22 is firstly used to slide inside the first rod 21, and the engaging position of the positioning pin 23 on the second rod 22 is adjusted to control the extension length of the second rod 22, thereby controlling the rotation angle between adjacent spring sheets 4 to limit the maximum moving distance of the spring sheet 4. When the distance between the adjacent contact blocks 32 pushed by the spring sheet 4 is continuously increased, it indicates that the larger the exposed area of ​​the patient's eyes is, the greater the volatilization amount of the liquid on the surface of the eyes is, making the patient's eyes more susceptible to dryness. By pushing the piston 312 to move in the hollow tube 311, the liquid is pumped into the pressure regulating chamber 34, and then the partition 342 of the pressure regulating chamber 34 is pushed to overcome the resistance of the spring 343 and move upward, and the partition 342 drives the pressure rod 341 and the pressure plate 322 to move upward to loosen the closure of the pressure plate 322 on the liquid outlet 323, thereby adjusting the liquid output of the liquid storage tube to adapt to the situation of increasing the exposed area of ​​the eyes and reduce the discomfort of the patient.

[0057] At the same time, during the sliding of the slide bar 31, the suction cup 35 is first rotated to contact the eyelid, and the slide bar 31 will also drive the slider to slide in the negative pressure chamber 313. Since the distance between the end of the slide bar 31 close to the negative pressure chamber 313 and the first mounting rod 11 and the second mounting rod 12 increases; the space inside the negative pressure chamber 313 increases to form a negative pressure suction force to suck the air inside the suction cup 35 through the suction tube 36 to form a negative pressure suction force to adsorb the suction cup 35 to the eyelid, so as to reduce the pressure of the contact block 32 and the eyelid support process, thereby reducing possible tearing damage.

[0058] Embodiment 2:

[0059] The difference from the first embodiment is that a clamping groove 14 is formed on the central block 2 , the top of the clamping groove 14 is communicated with the outside, and the clamping groove 14 is fully matched with the spring sheet 4 .

[0060] The specific implementation process is as follows: during use, the spring sheet 4 is clearance-matched with the clamping groove 14 to facilitate the replacement of the spring sheet 4, and to facilitate the subsequent maintenance of the spring sheet 4. At the same time, by replacing the spring sheet 4 with different elastic hardness to form different pressures to support the eyelid, the appropriate elastic force can be selected to support different patients.

[0061] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. An eyelid inspection retractor for ophthalmology, comprising a mounting frame (1) for a patient to wear, the mounting frame (1) comprising a first mounting rod (11) and a second mounting rod (12) arranged symmetrically, characterized in that: A plurality of support blocks (3) are respectively slidably matched horizontally on the first mounting rod (11) and the second mounting rod (12); a slide bar (31) is vertically slidably matched between the support blocks (3) and the first mounting block and the second mounting block; a deformable contact block (32) is provided between adjacent support blocks (3); and the contact blocks (32) are respectively hinged to the support blocks (3); An adjustment mechanism is provided between adjacent first mounting rods (11) and second mounting rods (12), and the adjustment mechanism is used to adjust the spacing between adjacent contact blocks (32); The slide bar (31) is also slidably fitted with a skin adsorption mechanism for assisting in pulling the eyelids; A liquid storage cavity (321) is provided in the contact block (32), and a plurality of liquid outlet holes (323) are connected to the bottom of the liquid storage cavity (321); a hollow tube (311) is provided inside the slide bar (31), and the hollow tube (311) is connected to an opening control mechanism for controlling the size of the liquid outlet holes (323) based on the sliding movement of the slide bar (31).

2. The eyelid inspection retractor for ophthalmology according to claim 1, characterized in that: The adjustment mechanism comprises a U-shaped spring sheet (4), the spring sheet (4) being parallel to the centers of the first mounting rod (11) and the second mounting rod (12); one end of the spring sheet (4) is clamped with a support block (3) close to the first mounting rod (11), and the other end of the spring sheet (4) is clamped with a support block (3) close to the second mounting rod (12), and the spring sheet (4) and the support block (3) are clearance-matched; and the center of the spring sheet (4) is fixedly connected to the mounting frame (1).

3. The eyelid inspection retractor for ophthalmology according to claim 2, characterized in that: The opening control mechanism comprises a piston (312) slidably matched with the hollow tube (311), and one end of the piston (312) away from the support block (3) is fixedly connected to the first mounting rod (11) or the second mounting rod (12) respectively; A pressure plate (322) for closing the liquid outlet hole (323) is provided in the gap of the liquid storage cavity (321); a pressure rod (341) is fixedly connected to the top of the pressure plate (322); a pressure regulating cavity (34) corresponding to the pressure rod (341) is opened in the support block (3); the pressure rod (341) passes through the support block (3) and is located in the regulating cavity; a partition (342) is fixedly connected to the pressure rod (341); a spring (343) is provided between the partition (342) and the top of the support block (3); the pressure regulating cavity (34) is also connected to a pressure regulating pipe (345); the pressure regulating pipe (345) is located on a side of the partition (342) away from the spring (343); the other end of the pressure regulating pipe (345) is connected to the hollow tube (311).

4. The eyelid inspection retractor for ophthalmology according to claim 3, characterized in that: The pressure rod (341) is also sleeved with a rubber pad, which is located between the pressure rod (341) and the pressure regulating chamber (34).

5. The eyelid inspection retractor for ophthalmology according to claim 4, characterized in that: The skin adsorption mechanism comprises a suction cup (35) slidably matched with the slide bar (31), a suction tube (36) is connected at the center of the suction cup (35), and the suction cup (35) is rotatable; A negative pressure chamber (313) is also provided in the slide bar (31), and the negative pressure chamber (313) is located at one end of the slide bar (31) away from the support block (3). A sliding block is connected in the negative pressure chamber (313), and the sliding block is slidably matched with the negative pressure chamber (313); the sliding block is fixedly connected to the first mounting rod (11) and the second mounting rod (12) respectively; and one end of the suction tube (36) away from the suction cup (35) is connected to the negative pressure chamber (313).

6. The eyelid inspection retractor for ophthalmology according to claim 5, characterized in that: A central block (2) is provided between adjacent spring sheets (4), the central block (2) is fixedly connected to the mounting frame (1), sliding rods are provided on both sides of the central block (2), the sliding rods include a first rod (21) and a second rod (22), the first rod (21) is rotatably matched with the central block (2), and the second rod (22) is located inside the first rod (21); A slider is hingedly connected to one end of the second rod (22) away from the first rod (21); a slide groove is formed on the spring sheet (4); the slider is located in the slide groove, and the slider and the slide groove are slidably matched; a through groove (24) is formed on the first rod (21); a positioning pin (23) is threadedly connected to the second rod (22); and the positioning pin (23) is slidably matched with the first rod (21).

7. The eyelid inspection retractor for ophthalmology according to claim 6, characterized in that: The first mounting rod (11) and the second mounting rod (12) are also slidably matched with an inverted Y-shaped placement block (13), and the placement block (13) is threadedly connected with a first bolt for fixing the placement block (13).

8. The eyelid inspection retractor for ophthalmology according to claim 7, characterized in that: A clamping groove (14) is formed on the center block (2), the top of the clamping groove (14) is communicated with the outside, and the clamping groove (14) is fully matched with the spring sheet (4).

9. The eyelid inspection retractor for ophthalmology according to claim 8, characterized in that: Both sides of the mounting frame (1) are fixedly connected with elastic bands, and the side of the elastic band away from the mounting frame (1) is fixedly connected with Velcro, and adjacent elastic bands are fixedly connected by the Velcro.

10. The eyelid inspection retractor for ophthalmology according to claim 9, characterized in that: The contact block (32) is clamped with a contact layer (33) away from the support block (3).

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