A corneal wetting device for cataract surgery

Abstract

The present invention discloses a corneal wetting device for cataract surgery, and the present invention relates to the technical field of ophthalmic surgical auxiliary instruments. The following scheme is proposed, which includes a mechanical arm mechanism, the end of the mechanical arm mechanism is movably provided with an actuator mechanism, the end of the actuator mechanism is provided with an eyelid expansion mechanism, and a corneal wetting device fixed on the lower surface of the eyelid expansion mechanism. The technical scheme of the present invention achieves the precise positioning effect of the eyelid by setting the actuator mechanism at the end position of the multi-axis mechanical arm, and the eyelid expansion mechanism is set at the end of the actuator mechanism, and the servo system is used to control the degree of expansion to achieve the expansion of the eyelid during the operation, expand the operation space, and the corneal wetting device is set below the expansion mechanism, and the wetting agent in the medicine pot is dripped into the inside of the eye in the expanded state to achieve the wetting effect of the cornea during the operation.

Description

Technical Field

[0001] The invention relates to the technical field of ophthalmic surgery auxiliary instruments, and in particular to a corneal wetting device used for cataract surgery. Background Art

[0002] Cataract surgery is an intraocular surgery. When removing the lens nucleus, the phacoemulsification technology used in cataract surgery may cause some energy to affect the corneal endothelium, thereby causing a certain degree of damage to the cornea. At this time, if the patient's cornea is normal, the slight damage to the cornea caused by cataract surgery is negligible and will not bring any consequences; if the patient's cornea itself has very serious lesions, corneal decompensation will occur under slight disturbances, resulting in irreversible corneal edema after vision. However, even if the patient's cornea is relatively healthy, in order to reduce the degree of damage to the cornea, medical staff still need to manually drip the wetting solvent onto the eyeball, and this manual dripping method not only depends entirely on the operator's experience, but also the random wetting method is prone to miss the best time for wetting. Therefore, those skilled in the art hereby propose a corneal wetting device for cataract surgery. Summary of the invention

[0003] The purpose of the present invention is to solve the defect in the above-mentioned background technology that corneal wetting during cataract surgery requires medical staff to manually drip wetting solvent, and to provide a corneal wetting device for cataract surgery.

[0004] The above-mentioned object of the present invention is achieved by the following technical solutions:

[0005] A corneal wetting device for cataract surgery, comprising a mechanical arm mechanism, the end of which is movably provided with an actuator arm mechanism, the end of which is provided with an eyelid expansion mechanism, and a corneal wetting device fixed on the lower surface of the eyelid expansion mechanism;

[0006] The mechanical arm mechanism includes a rotating base, a large arm rotatably connected to the end of the rotating base through a robot joint motor, and a small arm rotatably connected to the end of the large arm through a robot joint motor, wherein a robot joint motor for driving the large arm to rotate is arranged between the head end of the large arm and the top of the rotating base;

[0007] The actuator arm mechanism includes an actuator arm, a rotating base fixed to the end of the actuator arm, and a stainless steel bracket rotatably arranged on the lower surface of the rotating base, and four connecting plates are fixedly connected to the front side surface of the stainless steel bracket;

[0008] The eyelid expansion mechanism includes four side panels in a circular array, a servo motor fixed to the top of the side panel, and a ball screw connected to the output shaft of the servo motor, and a nut is movably arranged on the outer ring of the ball screw, a connecting rod is fixedly connected to the bottom end of the nut, and a slide rail is arranged between the front surface of the connecting rod and the inner side wall of the front side of the side panel;

[0009] The bottom end of the side plate is fixedly connected with a guide column, the upper section of the outer ring of the guide column is movably provided with a movable sleeve, the lower section of the outer ring of the guide column is fixedly connected with a fixed sleeve, and the left and right sides of the movable sleeve are hinged with two second connecting rods that are symmetrically arranged on the left and right sides, and the left and right sides of the fixed sleeve are hinged with two first connecting rods that are symmetrically arranged on the left and right sides, and the second connecting rods pass through the middle section inside the first connecting rod and are hinged to each other, and the end of the second connecting rod away from the guide column is hinged with an expansion plate, and the upper surface of the expansion plate close to each other is fixed with a sliding groove, and the end of the first connecting rod away from the guide column slides up and down inside the sliding groove;

[0010] The corneal wetting device includes two arc-shaped eyelid contact plates that are symmetrically arranged in front and back mirror images, and two support rods fixed to the middle section of the top surface of the arc-shaped eyelid contact plates, the ends of the support rods that are close to each other are fixed with a clamping sleeve, the inside of the clamping sleeve is clamped with a medicine pot, the bottom port of the medicine pot is connected to a curved pipe, the end of the curved pipe away from the clamping sleeve is equipped with a drip nozzle and is located above the space on one side of the arc-shaped eyelid contact plates that are close to each other; wherein, a vertical hose with a length of 2-4 cm is connected between the drip nozzle and the lower port of the medicine pot, and an infusion drip rate controller is installed on the outer surface of the vertical hose, which is used to control the physiological saline or balanced solution inside the medicine pot to enter the drip nozzle at a uniform speed.

[0011] In the above-mentioned technical solution of a corneal wetting device for cataract surgery, preferably, the four corners of the bottom surface of the rotating base are fixed to the surface of the operating table by screws, and the end port of the forearm is provided with an opening for placing the head end of the actuator arm, and a robot joint motor is installed on the right side wall of the forearm, and the output shaft of the robot joint motor passes through the forearm and the head end of the actuator arm inside the opening.

[0012] In the above-mentioned technical solution of a corneal wetting device for cataract surgery, preferably, the end of the actuator arm is fixedly connected to a truncated table, the upper surface of the truncated table is provided with a driving motor, the lower surface of the truncated table is rotatably connected to the top surface of the rotating base, and the output shaft of the driving motor is connected to the top surface of the rotating base through a coupling; the end of the connecting plate away from the stainless steel bracket is respectively connected to the back surface of the side plate on the rear side by screws, and the bottom end of the connecting rod is fixedly connected to the upper end surface of the movable sleeve.

[0013] In the above-mentioned technical solution of a corneal wetting device for cataract surgery, preferably, the end faces of the four side panels that are close to each other are fixedly connected to form a rectangular frame with upper and lower end faces penetrating, and the bottom of the servo motor housing is fixedly connected to the top end face of the side panel.

[0014] In the above-mentioned technical solution of a corneal wetting device for cataract surgery, preferably, a partition is fixedly connected to the bottom end face of the side plate, the top surface of the partition is rotatably connected to the bottom end of the ball screw, the bottom surface of the partition is fixedly connected to the top end of the guide column, and a rectangular through hole is opened at the inner front position of the partition for the connecting rod to pass through and move.

[0015] In the above-mentioned technical solution of a corneal wetting device for cataract surgery, preferably, a slide rail is fixed to the inner side wall of the front side side plate, a slider is arranged inside the slide rail, and the rear end face of the slider is fixedly connected to the front surface of the nut.

[0016] In the above-mentioned technical solution of a corneal wetting device for cataract surgery, preferably, a protrusion is fixed on both sides of the left and right outer rings of the movable sleeve and the fixed sleeve, and a through hole penetrating from front to back is opened inside the protrusion, and an axle pin is arranged inside the through hole, and the front and rear ends of the axle pin are located outside the through hole and are fixedly connected to the first connecting rod and one end of the second connecting rod close to the guide column respectively.

[0017] In the above-mentioned technical solution of a corneal wetting device for cataract surgery, preferably, the lower sections of the side where the expansion plates are close to each other are fixed with fixed blocks, a rotating shaft for connecting the second connecting rod one end away from the guide column passes through the inside of the fixed block, and an axle pin passes through the positions where the first connecting rod and the second connecting rod are cross-hinged with each other, and the first connecting rod and the second connecting rod are crossed to form an "X" shape.

[0018] In the above-mentioned technical solution of a corneal wetting device for cataract surgery, preferably, the interior of the slide groove is provided with a strip-shaped through groove which passes through from front to back, a cylinder passes through the interior of the strip-shaped through groove, and the front and rear ends of the cylinder are rotatably connected to the end of the first connecting rod away from the guide column, wherein the bottom surface of the expansion plate is fixedly connected to the rear side of the top surface of the arc-shaped eyelid contact plate.

[0019] In the above-mentioned technical solution of a corneal wetting device for cataract surgery, preferably, the arc-shaped eyelid contact plates are all arc-shaped for fitting the curved eyelids of the human body, and the sides of the arc-shaped eyelid contact plates away from each other are fixedly connected with extension blocks, and the top surface of the extension block is fixedly connected to the bottom end of the support rod; wherein, the medicine pot is made of transparent material and has a liquid level scale on the surface.

[0020] It can be seen from the above technical solution that the present invention provides a corneal wetting device for cataract surgery. Compared with the prior art, the present invention has the following beneficial effects:

[0021] The technical solution of the present invention achieves precise positioning of the eyelid by setting an actuator arm mechanism at the end position of the multi-axis robotic arm, and sets an eyelid expansion mechanism at the end of the actuator arm mechanism, and uses a servo system to control the degree of expansion to achieve expansion of the eyelid during surgery and expand the operating space of the surgery, and a corneal wetting device is set below the expansion mechanism, and the wetting agent in the medicine pot is dripped into the inside of the eye in a dilated state to achieve a wetting effect on the cornea during surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces and describes the drawings required for use in the embodiments of the present invention or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 This is the overall schematic diagram of the cornea wetting robotic arm structure;

[0024] Figure 2 is a schematic diagram of the robotic arm mechanism;

[0025] Figure 3 is a schematic diagram of the actuator arm mechanism;

[0026] Figure 4 is a schematic diagram of the eyelid expansion mechanism;

[0027] Figure 5 Schematic diagram of the corneal wetting device.

[0028] Attached Figure 1 -Attached Figure 5 The corresponding relationship of the parts is as follows:

[0029] 1. Robotic arm mechanism; 11. Rotating base; 12. Upper arm; 13. Lower arm; 2. Actuator arm mechanism; 21. Actuator arm; 22. Rotating base; 23. Stainless steel bracket; 24. Connecting plate; 3. Eyelid expansion mechanism; 31. Servo motor; 32. Side panel; 33. Nut; 34. Ball screw; 35. Guide column; 36. Movable sleeve; 37. Expansion plate; 38. Fixed sleeve; 39. First connecting rod; 310. Second connecting rod; 311. Slide; 312. Connecting rod; 4. Corneal wetting device; 41. Arc eyelid contact plate; 42. Drip nozzle; 43. Bend pipe; 44. Support rod; 45. Medicine pot; 46. Card sleeve. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0031] In order to more clearly explain and illustrate the technical solution and implementation of the present invention, several preferred specific embodiments for implementing the technical solution of the present invention are introduced below.

[0032] Embodiment: A preferred technical solution of a corneal wetting device for cataract surgery:

[0033] It comprises a mechanical arm mechanism 1, the end of which is movably provided with an actuator arm mechanism 2, the end of which is provided with an eyelid expansion mechanism 3, and a cornea wetting device 4 fixed on the lower surface of the eyelid expansion mechanism 3;

[0034] The robot arm mechanism 1 includes a rotating base 11, a large arm 12 rotatably connected to the end of the rotating base 11 through a robot joint motor, and a small arm 13 rotatably connected to the end of the large arm 12 through a robot joint motor, wherein a robot joint motor for driving the large arm 12 to rotate is arranged between the head end of the large arm 12 and the top of the rotating base 11;

[0035] The actuator mechanism 2 includes an actuator arm 21, a rotating base 22 fixed to the end of the actuator arm 21, and a stainless steel bracket 23 rotatably arranged on the lower surface of the rotating base 22, and four connecting plates 24 are fixedly connected to the front side surface of the stainless steel bracket 23;

[0036] The eyelid expansion mechanism 3 includes four side panels 32 in a circular array, a servo motor 31 fixed to the top of the side panel 32, and a ball screw 34 connected to the output shaft of the servo motor 31, and a nut 33 is movably arranged on the outer ring of the ball screw 34, a connecting rod 312 is fixedly connected to the bottom end of the nut 33, and a slide rail is arranged between the front surface of the connecting rod 312 and the inner side wall of the front side panel 32;

[0037] The bottom end of the side plate 32 is fixedly connected with a guide column 35, and a movable sleeve 36 is movably provided on the upper section of the outer ring of the guide column 35, and a fixed sleeve 38 is fixedly connected with the lower section of the outer ring of the guide column 35, and the left and right sides of the movable sleeve 36 are hinged with two second connecting rods 310 that are symmetrically arranged on the left and right sides, and the left and right sides of the fixed sleeve 38 are hinged with two first connecting rods 39 that are symmetrically arranged on the left and right sides, and the second connecting rods 310 pass through the middle section inside the first connecting rod 39 and are hinged to each other, and the end of the second connecting rod 310 away from the guide column 35 is hinged with an expansion plate 37, and the upper surface of the expansion plate 37 on the side close to each other is fixed with a slide groove 311, and the end of the first connecting rod 39 away from the guide column 35 slides up and down inside the slide groove 311;

[0038] The corneal wetting device 4 includes two arc-shaped eyelid contact plates 41 that are arranged in front and back mirror symmetry, and two support rods 44 fixed to the middle section of the top surface of the arc-shaped eyelid contact plates 41, and a clamping sleeve 46 is fixed to the ends of the support rods 44 that are close to each other, and a medicine pot 45 is clamped inside the clamping sleeve 46. The bottom port of the medicine pot 45 is connected to a curved pipe 43, and a drip nozzle 42 is installed at the end of the curved pipe 43 away from the clamping sleeve 46 and is located above the space on one side of the arc-shaped eyelid contact plates 41 that are close to each other.

[0039] The four corners of the bottom surface of the rotating base 11 are fixed to the surface of the operating table by screws, and the end port of the small arm 13 is provided with an opening for the head end of the actuator arm 21 to be placed. A robot joint motor is installed on the right side wall of the small arm 13, and the output shaft of the robot joint motor passes through the small arm 13 and the head end of the actuator arm 21 inside the opening. The end of the actuator arm 21 is fixedly connected to a truncated table, and a driving motor is arranged on the upper surface of the truncated table. The lower surface of the truncated table is rotatably connected to the top surface of the rotating base 22, and the output shaft of the driving motor is connected to the top surface of the rotating base 22 through a coupling; the end of the connecting plate 24 away from the stainless steel bracket 23 is respectively connected to the back surface of the rear side plate 32 by screws.

[0040] The end faces of the four side panels 32 that are close to each other are fixedly connected to form a rectangular frame with upper and lower end faces penetrating, and the bottom of the housing of the servo motor 31 is fixedly connected to the top end face of the side panel 32. A partition is fixedly connected to the bottom end face of the side panel 32, the top surface of the partition is rotatably connected to the bottom end of the ball screw 34, the bottom surface of the partition is fixedly connected to the top end of the guide column 35, and a rectangular through hole is opened at the front position inside the partition for the connecting rod 312 to penetrate and move, and the bottom end of the connecting rod 312 is fixedly connected to the upper end face of the movable sleeve 36.

[0041] A slide rail is fixed to the inner side wall of the front side plate 32, and a slider is arranged inside the slide rail, and the rear end surface of the slider is fixedly connected to the front surface of the nut 33. A convex block is fixed to the left and right sides of the outer ring of the movable sleeve 36 and the fixed sleeve 38, and a through hole is opened inside the convex block, and an axle pin is arranged inside the through hole. The front and rear ends of the axle pin located outside the through hole are fixedly connected to the first connecting rod 39 and the end of the second connecting rod 310 close to the guide column 35.

[0042] The lower section of the side where the expansion plates 37 are close to each other is fixed with a fixed block, and a rotating shaft for connecting the second connecting rod 310 away from the guide column 35 is rotatably passed through the fixed block, and a shaft pin is passed through the position where the first connecting rod 39 and the second connecting rod 310 are cross-hinged, and the first connecting rod 39 and the second connecting rod 310 are crossed to form an "X" shape. The interior of the slide groove 311 is provided with a strip-shaped through groove that passes through the front and back, and a cylinder is passed through the interior of the strip-shaped through groove, and the front and rear ends of the cylinder are rotatably connected to the end of the first connecting rod 39 away from the guide column 35, wherein the bottom surface of the expansion plate 37 is fixedly connected to the rear side of the top surface of the arc-shaped eyelid contact plate 41.

[0043] The arc-shaped eyelid contact plates 41 are all arc-shaped and are used to fit the curved eyelids of the human body, and the sides of the arc-shaped eyelid contact plates 41 that are away from each other are fixedly connected with extension blocks, and the top surface of the extension block is fixedly connected to the bottom end of the support rod 44; wherein, the medicine pot 45 is made of transparent material and has a liquid level scale on the surface.

[0044] According to the above-mentioned preferred technical solution, the workflow of the technical solution is described as follows:

[0045] When the patient lies on the operating table, the robotic arm mechanism 1 is set up on the operating table and located on the left or right side of the patient's head. At the same time, the rotating base 11, the upper arm 12 and the lower arm 13 are controlled by the computer terminal to move the upper arm 12 and the lower arm 13 to a suitable angle, such as controlling the upper arm 12 and the lower arm 13 to make the eyelid expansion mechanism 3 perpendicular to the patient's face and to make the bottom of the eyelid expansion mechanism 3 contact the patient's eyelid.

[0046] At this time, the servo motor 31 is controlled to operate precisely to drive the nut 33 to move downward at a uniform speed, so that the connecting rod 312 is squeezed downward to push the sleeve 36 to move. At this time, the left and right angles between the first connecting rod 39 and the second connecting rod 310 become larger, and the expansion plates 37 are pushed away from each other, thereby driving the arc-shaped eyelid contact plate 41 in contact with the eyelid to expand the eyelid. After the eyelid is expanded, the curved pipe 43 guides the saline or balanced solution inside the medicine pot 45 into the drip nozzle 42. In addition, a vertical hose with a length of 2-4 cm is connected between the drip nozzle 42 and the lower port of the medicine pot 45. An infusion drip rate controller is installed on the outer surface of the vertical hose. The infusion drip rate controller allows the saline or balanced solution to enter the drip nozzle 42 at a uniform speed and drip from the drip nozzle 42 onto the cornea of ​​the eye.

[0047] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone should be aware that any structural changes made under the inspiration of the present invention, and any technical solutions that are the same or similar to the present invention, fall within the protection scope of the present invention. Finally, it should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the restrictive conditions that can be implemented in this application, so they have no technical substantive significance. Any structural modification, change in proportional relationship or adjustment of size, without affecting the effects that can be produced by this application and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in this application.

Claims

1. A corneal wetting device for cataract surgery, comprising a robotic arm mechanism (1), characterized in that: The end of the mechanical arm mechanism (1) is movably provided with an actuator arm mechanism (2), and the end of the actuator arm mechanism (2) is provided with an eyelid expansion mechanism (3), and a cornea wetting device (4) fixed on the lower surface of the eyelid expansion mechanism (3); The mechanical arm mechanism (1) comprises a rotating base (11), a large arm (12) rotatably connected to the end of the rotating base (11) via a robot joint motor, and a small arm (13) rotatably connected to the end of the large arm (12) via a robot joint motor, wherein a robot joint motor for driving the large arm (12) to rotate is arranged between the head end of the large arm (12) and the top of the rotating base (11); The actuator arm mechanism (2) comprises an actuator arm (21), a rotating base (22) fixed to the end of the actuator arm (21), and a stainless steel bracket (23) rotatably arranged on the lower surface of the rotating base (22), and four connecting plates (24) are fixedly connected to the front side surface of the stainless steel bracket (23); The eyelid expansion mechanism (3) comprises four side plates (32) in a circular array, a servo motor (31) fixed to the top of the side plate (32), and a ball screw (34) connected to the output shaft of the servo motor (31), and a nut (33) is movably arranged on the outer ring of the ball screw (34), a connecting rod (312) is fixedly connected to the bottom end of the nut (33), and a slide rail is arranged between the front surface of the connecting rod (312) and the inner side wall of the front side of the side plate (32); The bottom end of the side plate (32) is fixedly connected with a guide column (35), the upper section of the outer ring of the guide column (35) is movably provided with a movable sleeve (36), the lower section of the outer ring of the guide column (35) is fixedly connected with a fixed sleeve (38), and the left and right sides of the movable sleeve (36) are hinged with two second connecting rods (310) which are symmetrically arranged on the left and right sides, and the left and right sides of the fixed sleeve (38) are hinged with two first connecting rods (39) which are symmetrically arranged on the left and right sides, and the second connecting rods (310) pass through the middle section inside the first connecting rod (39) and are hinged to each other, and the end of the second connecting rod (310) away from the guide column (35) is hinged with an expansion plate (37), and the upper surface of the expansion plate (37) on the side close to each other is fixed with a slide groove (311), and the end of the first connecting rod (39) away from the guide column (35) slides up and down inside the slide groove (311); The corneal wetting device (4) comprises two arc-shaped eyelid contact plates (41) arranged in front and back mirror symmetry, and two support rods (44) fixed to the middle section of the top surface of the arc-shaped eyelid contact plates (41), the ends of the support rods (44) close to each other are fixed with a clamping sleeve (46), the inside of the clamping sleeve (46) is clamped with a medicine pot (45), the bottom port of the medicine pot (45) is connected with a curved pipe (43), the end of the curved pipe (43) away from the clamping sleeve (46) is equipped with a drip nozzle (42) and is located above the space on one side of the arc-shaped eyelid contact plates (41) close to each other; wherein, a vertical hose with a length of 2-4 cm is connected between the drip nozzle (42) and the lower port of the medicine pot (45), and an infusion drip rate controller is installed on the outer surface of the vertical hose.

2. A corneal wetting device for cataract surgery according to claim 1, characterized in that: The four corners of the bottom surface of the rotating base (11) are fixed to the surface of the operating table by screws, and the end port of the small arm (13) is provided with an opening for placing the head end of the actuator arm (21), and a robot joint motor is installed on the right side wall of the small arm (13), and the output shaft of the robot joint motor passes through the small arm (13) and the head end of the actuator arm (21) inside the opening.

3. A corneal wetting device for cataract surgery according to claim 1, characterized in that: The end of the actuator arm (21) is fixedly connected to a truncated table, the upper surface of the truncated table is provided with a driving motor, the lower surface of the truncated table is rotatably connected to the top surface of the rotating base (22), and the output shaft of the driving motor is connected to the top surface of the rotating base (22) via a coupling; the end of the connecting plate (24) away from the stainless steel bracket (23) is respectively connected to the back surface of the side plate (32) at the rear side by screws.

4. A corneal wetting device for cataract surgery according to claim 1, characterized in that: The end surfaces of the four side plates (32) that are close to each other are fixedly connected to form a rectangular frame with upper and lower end surfaces penetrating, and the bottom of the housing of the servo motor (31) is fixedly connected to the top end surface of the side plate (32).

5. A corneal wetting device for cataract surgery according to claim 1, characterized in that: The bottom end surface of the side plate (32) is fixedly connected to a partition, the top surface of the partition is rotatably connected to the bottom end of the ball screw (34), the bottom surface of the partition is fixedly connected to the top end of the guide column (35), and a rectangular through hole for the connecting rod (312) to pass through and move is opened at the front position inside the partition, and the bottom end of the connecting rod (312) is fixedly connected to the upper end surface of the movable sleeve (36).

6. A corneal wetting device for cataract surgery according to claim 1, characterized in that: A slide rail is fixed to the inner side wall of the front side side plate (32), a slider is arranged inside the slide rail, and the rear end surface of the slider is fixedly connected to the front surface of the nut (33).

7. A corneal wetting device for cataract surgery according to claim 1, characterized in that: A convex block is fixed on both sides of the outer ring of the movable sleeve (36) and the fixed sleeve (38), and a through hole is opened inside the convex block, and an axle pin is arranged inside the through hole. The front and rear ends of the axle pin are located outside the through hole and are fixedly connected to the first connecting rod (39) and the end of the second connecting rod (310) close to the guide column (35).

8. A corneal wetting device for cataract surgery according to claim 1, characterized in that: A fixing block is fixed to the lower section of the side where the expansion plates (37) are close to each other. A rotating shaft for connecting the second connecting rod (310) away from the guide column (35) is rotatably passed through the inside of the fixing block, and an axle pin is passed through the position where the first connecting rod (39) and the second connecting rod (310) are cross-hinged with each other. The first connecting rod (39) and the second connecting rod (310) are cross-hinged to form an "X" shape.

9. A corneal wetting device for cataract surgery according to claim 1, characterized in that: The interior of the slide groove (311) is provided with a strip-shaped through groove that passes through the front and rear, and a cylinder passes through the interior of the strip-shaped through groove, and the front and rear ends of the cylinder are rotatably connected to the end of the first connecting rod (39) away from the guide column (35), wherein the bottom surface of the expansion plate (37) is fixedly connected to the rear side of the top surface of the arc-shaped eyelid contact plate (41).

10. A corneal wetting device for cataract surgery according to claim 1, characterized in that: The arc-shaped eyelid contact plates (41) are all arc-shaped and are used to fit the curved eyelids of the human body, and the sides of the arc-shaped eyelid contact plates (41) that are away from each other are fixedly connected with extension blocks, and the top surface of the extension block is fixedly connected to the bottom end of the support rod (44); wherein the medicine pot (45) is made of transparent material and has a liquid level scale on the surface.

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