Safe head fixing device for ophthalmologic operation

Abstract

The utility model belongs to the technical field of fixing devices, and particularly relates to a head safety fixing device for ophthalmologic operations, which comprises a connecting rod, a mounting cavity is arranged in one side of the connecting rod, an adjusting component is arranged in the mounting cavity, and the adjusting component is connected with a limiting clamping groove. A plurality of limiting clamping grooves are formed in one sides of the first sliding rods at equal intervals, arc-shaped silica gel plates are fixedly mounted at the bottom ends of the first sliding rods, movable cavities are formed in the centers of the supporting rods correspondingly, clamping assemblies are arranged in the movable cavities correspondingly, the clamping assemblies are connected with first screw rods, and mounting plates are fixedly mounted at one ends of the first screw rods correspondingly; auxiliary supporting plates are fixedly mounted on the two sides of the mounting plate, the bottom ends of supporting rods are connected with height adjusting assemblies, and the height adjusting assemblies are mounted in a movable seat. And when a patient raises the head or lowers the head in the operation process, the normal operation of the operation is also hindered.

Description

Technical Field

[0001] The utility model belongs to the technical field of fixing devices, and in particular relates to a head safety fixing device used in ophthalmic surgery. Background Art

[0002] The full name of ophthalmology is "eye disease specialist", which is a discipline that studies diseases that occur in the visual system, including the eyeball and its associated tissues. Ophthalmology generally studies vitreous, retinal diseases, optometry, glaucoma and optic neuropathy, cataracts and other eye diseases. Before most eye surgeries, patients will be anesthetized. During the operation, patients cannot control their heads with their own subjective consciousness and may move their heads unconsciously.

[0003] Conventional head fixation devices cannot completely fit the patient's head and may become loose during surgery. They can only limit the patient's head rotation. When the patient raises or lowers his head during surgery, it will also hinder the normal progress of the surgery. Utility Model Content

[0004] In view of the above problems, the purpose of the utility model is to provide a safe head fixation device for ophthalmic surgery, which solves the problem that conventional head fixation devices cannot fully fit the patient's head and may become loose during the operation, and can only limit the patient's head rotation. When the patient raises or lowers his head during the operation, it will also hinder the normal progress of the operation.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is: a safety fixing device for the head in ophthalmic surgery, comprising a connecting rod, a mounting cavity is opened inside one side of the connecting rod, an adjustment component is arranged in the mounting cavity, the adjustment component is connected to the limit slot, and the limit slot is opened at a plurality of equal intervals on one side of a slide rod, the slide rod passes through the center of the connecting rod and is slidably connected thereto, an arc-shaped silicone plate is fixedly installed at the bottom end of the slide rod, electric telescopic rods are fixedly installed inside both ends of the connecting rod, and one end of the electric telescopic rod is fixedly connected to a support On one side of the support rod, a movable cavity is opened at the center of the support rod, and a clamping assembly is arranged in the movable cavity, the clamping assembly is connected to screw rod one, one end of the screw rod one is fixedly installed with a mounting plate, auxiliary support plates are fixedly installed on both sides of the mounting plate, one end of the auxiliary support plate is respectively fixedly connected to the two ends of one side of the sponge splint, and the two groups of sponge splints are arranged opposite to each other, the bottom end of the support rod is connected to the height adjustment assembly, the height adjustment assembly is arranged inside the movable seat, the movable seat is arranged below the support rod and the two groups of movable seats are arranged opposite to each other.

[0006] The beneficial effects of the utility model are:

[0007] When the patient's head is clamped and fixed on both sides, the user can press the sliding bar 2. At this time, the spring 1 is contracted by the external force, and the sliding bar 2 slides downward, and the tooth block 3 fixed on one side thereof makes the gear 3 rotate. When the gear 3 rotates, the rotating rod connected to the rear side thereof rotates, and the transmission belt drives the rotating rod on the other side to rotate, and the rotating rod on the other side can drive the gear 2 to rotate. When the gear 2 rotates, the tooth block 4 meshing with it drives the sliding bar 3 to slide toward the inner side of the installation cavity, and the insertion rod can be separated from the limiting groove. At this time, the sliding bar 1 is pressed downward again to make the arc-shaped silicone plate press against the patient's forehead, and the patient's forehead is limited and fixed. When the arc-shaped silicone plate slides to the appropriate position, the sliding bar 2 is released. At this time, the spring 1 can move the sliding bar 2 to slide upward without external force. Similarly, the insertion rod can be embedded in the limiting groove at the appropriate position to limit and fix the arc-shaped silicone plate, and the safe fixation of the head can be completed.

[0008] To secure the device to the examination table:

[0009] As a further improvement of the above technical solution: a card slot is opened on the opposite side of the movable seat, a suction cup is slidably installed in the card slot, one end of the suction cup is fixedly connected to one end of the screw rod three at the center, and the screw rod three passes through the bottom end of the movable seat and is threadedly connected thereto.

[0010] The beneficial effect of this improvement is that when using the device, the slots on one side of the movable seat can be first engaged with the two sides of the examination bed, and the screw rod three can be rotated to make the suction cups press against the two sides of the examination bed. The cooperation between the slots and the suction cups can fix the device on the examination bed.

[0011] To adjust the position of the splint:

[0012] As a further improvement of the above technical solution: the height adjustment assembly consists of two screws and one slide groove, one side of the movable seat is in contact with one side of the bottom end of the support rod, and one side of the movable seat is provided with one slide groove, two screws are rotatably installed in the one slide groove, and one end of the two screws passes through the bottom end of the movable seat and is rotatably connected thereto, the two screws pass through the slider and is threadedly connected thereto, and the slider is embedded and slidably installed in the one slide groove, and one side of the slider is fixedly connected to the bottom end of the support rod.

[0013] The beneficial effect of this improvement is that after the device is fixed, the patient can lie on the examination bed and place the head in the middle position of the relatively installed support rod. The medical staff can then turn the screw rod 2 so that the slider threadedly connected to it drives the support rod to move up and down, and the up and down movement of the support rod can adjust the position of the sponge splint, so that the device is suitable for different groups of people and increases the comfort of different groups of people using the device.

[0014] To clamp both sides of the patient's head:

[0015] As a further improvement of the above technical solution: the clamping assembly consists of a threaded drum and a motor, a motor is fixedly installed on the inner wall of one side of the movable cavity, and a gear is fixedly installed on the sub-shaft of the motor, one side of the gear is meshedly connected to a tooth block 1 fixedly installed equidistantly on the outside of the threaded drum, a screw rod 1 is penetrated and installed in the threaded drum and is threadedly connected thereto, and the screw rod 1 penetrates the support rod and is slidably connected thereto, a limit plate is rotatably installed on the other end of the screw rod, and the top end of the limit plate is fixedly connected to one end of the guide rod, and the other end of the guide rod penetrates the support rod and is slidably connected thereto, and the other end of the guide rod is fixedly connected to the mounting plate.

[0016] The beneficial effect of this improvement is that when the height position adjustment of the sponge splint is completed, the medical staff can start the motor through the control component to rotate the gear. At this time, the tooth block meshing with it drives the threaded drum to rotate in the movable cavity, and the threaded drum rotates to drive the sponge splint to move relative to the patient's head, thereby clamping and fixing both sides of the patient's head.

[0017] To reduce the discomfort caused by the splint on the head for a long time:

[0018] As a further improvement of the above technical solution: the sponge splint is provided with an ear placement groove through it.

[0019] The beneficial effect of this improvement is that the ear placement slot can be used to place the patient's ears, reducing the discomfort caused by the ears when the sponge splint clamps the head for a long time.

[0020] To limit and fix the patient's forehead:

[0021] As a further improvement of the above technical solution: the adjustment component is composed of gear 2, gear 3, transmission belt, slide bar 2, slide groove 2, slide bar 3, rotating rod, and insertion rod. The inner walls on both sides of the installation cavity are respectively rotatably installed with a driving wheel and a driven wheel, and the outer sides of the driving wheel and the driven wheel are sleeved and installed and transmission connected with them. One end of the driving wheel and the driven wheel is equipped with a rotating rod, and one end of the rotating rod is respectively fixedly installed with gear 2 and gear 3. One side of the gear 3 is meshed and connected with tooth block 3. The tooth block 3 is equidistantly fixedly installed with a plurality of gears on one side of the slide bar 2. The sliding rod 2 passes through the connecting rod and is slidably connected with it, and a spring 1 is sleeved on the outer side of one end of the sliding rod 2, one end of the spring 1 is fixedly connected to the top of the connecting rod, the bottom side of the gear 2 is meshed with a tooth block 4, the tooth block 4 is equidistantly fixed on one side of the sliding rod 3, and an insertion rod is fixedly installed at one end of the sliding rod 3, one end of the insertion rod passes through one side of the installation cavity and is slidably connected with it, and one end of the insertion rod is engaged with the limiting slot, a sliding groove 2 is provided at the bottom end of the installation cavity, and a movable block is slidably installed in the sliding groove 2, and the movable block is fixedly connected to the sliding rod 3.

[0022] When the patient's head is clamped and fixed on both sides, the user can press the sliding bar 2. At this time, the spring 1 is contracted by the external force, and the sliding bar 2 slides downward, and the tooth block 3 fixed on one side thereof makes the gear 3 rotate. When the gear 3 rotates, the rotating rod connected to the rear side thereof makes the driving wheel rotate, and the transmission belt drives the driven wheel to rotate. When the driven wheel rotates, the rotating rod connected to it drives the gear 2 to rotate. When the gear 2 rotates, the tooth block 4 meshing with it drives the sliding bar 3 to slide toward the inner side of the installation cavity, and the insertion rod can be separated from the limiting groove. At this time, the sliding bar 1 is pressed downward again so that the arc-shaped silicone plate is pressed against the patient's forehead, and the patient's forehead is limited and fixed. When the arc-shaped silicone plate slides to the appropriate position, the sliding bar 2 is released. At this time, the spring 1 can drive the sliding bar 2 to slide upward without external force. Similarly, the insertion rod can be embedded in the limiting groove at the appropriate position to limit and fix the arc-shaped silicone plate, and the safe fixation of the head can be completed.

[0023] In order to uniformly control this device:

[0024] As a further improvement of the above technical solution: a control component is fixedly installed on one side of the support rod, a battery and a control chip are installed in the control component, and the control component is electrically connected to the electric telescopic rod and the motor.

[0025] The beneficial effect of this improvement is that the control component is electrically connected to the electric telescopic rod and the motor, and the device is uniformly controlled through the control component.

[0026] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model;

[0028] Figure 2 This is a schematic diagram of the structure of the adjustment component of the utility model;

[0029] Figure 3 This is a schematic diagram of the structure of the clamping assembly of the utility model;

[0030] Figure 4 This is a schematic diagram of the structure of the second screw rod of the utility model;

[0031] Figure 5 It is a schematic diagram of the rotating rod structure of the utility model;

[0032] Figure 6 This is a schematic diagram of the sponge splint structure of the utility model;

[0033] In the figure: 1. connecting rod; 2. sliding rod 1; 3. limiting slot; 4. spring 2; 5. electric telescopic rod; 6. support rod; 7. clamping assembly; 8. screw 1; 9. sponge splint; 10. control assembly; 11. movable seat; 12. screw 2; 13. slide slot 1; 14. suction cup; 15. screw 3; 16. threaded drum; 17. motor; 18. mounting plate; 19. mounting cavity; 20. gear 2; 21. gear 3; 22. transmission belt; 23. sliding rod 2; 24. slide slot 2; 25. sliding rod 3; 26. rotating rod; 27. insertion rod. DETAILED DESCRIPTION

[0034] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the protection scope of the present invention.

[0035] like Figure 1-6As shown, a head safety fixing device for ophthalmic surgery includes a connecting rod 1, a mounting cavity 19 is provided inside one side of the connecting rod 1, an adjustment component is provided in the mounting cavity 19, the adjustment component is connected to a limit slot 3, and the limit slot 3 is provided with a plurality of equal distances on one side of a slide rod 2, the slide rod 2 passes through the center of the connecting rod 1 and is slidably connected thereto, an arc-shaped silicone plate is fixedly installed at the bottom end of the slide rod 2, electric telescopic rods 5 are fixedly installed inside both ends of the connecting rod 1, and one end of the electric telescopic rod 5 is fixedly connected to one side of a support rod 6, the support rod 6 is provided with an active cavity at the center, and a clamping assembly 7 is arranged in the active cavity, the clamping assembly 7 is connected to a screw rod 8, one end of the screw rod 8 is fixedly installed with a mounting plate 18, both sides of the mounting plate 18 are fixedly installed with auxiliary support plates, one end of the auxiliary support plate is respectively fixedly connected to the two ends of one side of the sponge splint 9, and two groups of sponge splints 9 are relatively arranged, the bottom end of the support rod 6 is connected to a height adjustment assembly, the height adjustment assembly is arranged inside the movable seat 11, the movable seat 11 is arranged below the support rod 6 and the two groups of movable seats 11 are relatively arranged.

[0036] A card slot is provided on the opposite side of the movable seat 11, and a suction cup 14 is slidably installed in the card slot. One end of the suction cup 14 is fixedly connected to one end of a screw rod 3 15 at the center, and the screw rod 3 15 passes through the bottom end of the movable seat 11 and is threadedly connected thereto. When using the device, the card slot provided on one side of the movable seat 11 can be first engaged with the two sides of the examination bed, and the screw rod 3 15 can be rotated to make the suction cup 14 press against the two sides of the examination bed. The cooperation between the card slot and the suction cup 14 fixes the device on the examination bed.

[0037] The height adjustment assembly is composed of a screw rod 2 12 and a slide groove 13. One side of the movable seat 11 is in contact with one side of the bottom end of the support rod 6, and a slide groove 13 is provided on one side of the movable seat 11. The screw rod 2 12 is rotatably installed in the slide groove 13, and one end of the screw rod 2 12 passes through the bottom end of the movable seat 11 and is rotatably connected thereto. The screw rod 2 12 passes through the slider and is threadedly connected thereto, and the slider is slidably installed in the slide groove 13, and one side of the slider is fixedly connected to one side of the bottom end of the support rod 6; when the device is fixed, the patient can lie on the examination bed and place the head in the middle position of the relatively installed support rod 6. At this time, the medical staff can rotate the screw rod 2 12 so that the slider threadedly connected thereto drives the support rod 6 to move up and down, and the up and down movement of the support rod 6 can adjust the position of the sponge splint 9, so that the device is suitable for different groups of people and increases the comfort of different groups of people using the device.

[0038] The clamping assembly 7 is composed of a threaded rotating cylinder 16 and a motor 17. The motor 17 is fixedly installed on the inner wall of one side of the movable cavity. The sub-rotating shaft of the motor 17 is fixedly installed with a gear. One side of the gear is meshed and connected to a tooth block 1 fixedly installed equidistantly on the outer side of the threaded rotating cylinder 16. A screw 8 is penetrated and installed in the threaded rotating cylinder 16 and is threadedly connected with it, and the screw 8 penetrates the support rod 6 and is slidably connected with it. A limit plate is rotatably installed on the other end of the screw 8, and the top of the limit plate is fixedly connected to one end of the guide rod, and the other end of the guide rod penetrates the support rod 6 and is slidably connected with it, and the other end of the guide rod is fixedly connected to the mounting plate 18; when the height position of the sponge splint 9 is adjusted, the medical staff can start the motor 17 through the control assembly 10 to rotate the gear. At this time, the tooth block 1 meshed with it drives the threaded rotating cylinder 16 to rotate in the movable cavity, and the threaded rotating cylinder 16 rotates the screw 8 threadedly connected with it to drive the sponge splint 9 to move relative to the patient's head, thereby clamping and fixing both sides of the patient's head.

[0039] The sponge splint 9 is provided with an ear placement groove; the ear placement groove can be used to place the patient's ear, thereby reducing the discomfort caused by the ear when the sponge splint 9 clamps the head for a long time.

[0040] The adjustment assembly is composed of gear 20, gear 3 21, transmission belt 22, slide bar 23, slide slot 24, slide bar 3 25, rotating rod 26, and plug rod 27. The inner walls on both sides of the installation cavity 19 are respectively rotatably installed with a driving wheel and a driven wheel, and the outer sides of the driving wheel and the driven wheel are sleeved with a transmission belt 22 and are transmission-connected therewith. One end of the driving wheel and the driven wheel is respectively installed with a rotating rod 26, and one end of the rotating rod 26 is respectively fixedly installed with gear 20 and gear 3 21, one side of the gear 3 21 is meshedly connected with tooth block 3, and the tooth block 3 is fixedly installed equidistantly. There are several on one side of the slide bar 23, the slide bar 23 penetrates the connecting rod 1 and is slidably connected thereto, and a spring 1 is sleeved on the outer side of one end of the slide bar 23, one end of the spring 1 is fixedly connected to the top of the connecting rod 1, the bottom side of the gear 20 is meshed with a tooth block 4, the tooth block 4 is equidistantly fixedly installed on one side of the slide bar 3 25, and an insertion rod 27 is fixedly installed on one end of the slide bar 3 25, one end of the insertion rod 27 penetrates one side of the installation cavity 19 and is slidably connected thereto, and one end of the insertion rod 27 is engaged with the limit slot 3, and the bottom end of the installation cavity 19 is opened There is a slide groove 24, and a movable block is slidably mounted in the slide groove 24, and the movable block is fixedly connected to the slide rod 3 25; after the patient's head on both sides is clamped and fixed, the user can press the slide rod 23, at this time the spring 1 is contracted by the external force, and the slide rod 23 slides downward, and the tooth block 3 fixedly mounted on one side thereof makes the gear 3 21 rotate, and the gear 3 21 rotates while the rotating rod 26 connected to the rear side thereof rotates, and the transmission belt 22 will drive the driven wheel to rotate, and when the driven wheel rotates, the rotating rod 26 connected to it drives the gear 20 to rotate, and the gear 22 0 rotates, the tooth block four meshing with it drives the sliding rod three 25 to slide toward the inner side of the installation cavity 19, and the insertion rod 27 can be separated from the limiting groove 3. At this time, the sliding rod 1 2 is pressed downward so that the arc-shaped silicone plate is against the patient's forehead to limit and fix the patient's forehead. When the arc-shaped silicone plate slides to a suitable position, the sliding rod 23 is released. At this time, the spring 1 can move the sliding rod 23 to slide upward without external force. Similarly, the insertion rod 27 can be embedded in the limiting groove 3 at a suitable position to limit and fix the arc-shaped silicone plate, thereby completing the safe fixation of the head.

[0041] A control component 10 is fixedly mounted on one side of the support rod 6 . A battery and a control chip are mounted in the control component 10 , and the control component 10 is electrically connected to the electric telescopic rod 5 and the motor 17 .

[0042] The working principle and use process of the utility model are as follows: when using the device, firstly, the electric telescopic rod 5 is started by the control component 10 to make the support rod 6 relatively move so that the movable seat 11 moves to the two sides of the examination bed of different widths, and the slots provided on one side of the movable seat 11 are engaged with the two sides of the examination bed, and the screw rod 3 15 is rotated so that the suction cup 14 is pressed against the two sides of the examination bed, and the cooperation between the slot and the suction cup 14 fixes the device on the examination bed. When the device is fixed, the patient can lie on the examination bed and place the head in the middle position of the relatively installed support rod 6. At this time, the medical staff can rotate the screw rod 2 12 to make the patient lie on the examination bed. The slider threadedly connected thereto drives the support rod 6 to move up and down, and the up and down movement of the support rod 6 can adjust the position of the sponge splint 9, so that the device is suitable for different groups of people and increases the comfort of different groups of people using the device. When the height position adjustment of the sponge splint 9 is completed, the medical staff can start the motor 17 through the control component 10 to rotate the gear. At this time, the tooth block 1 meshing with it drives the threaded rotating cylinder 16 to rotate in the active cavity, and the threaded rotating cylinder 16 rotates the screw 8 threadedly connected thereto to drive the sponge splint 9 to move relative to the patient's head, thereby adjusting the patient's head. The two sides of the head are clamped and fixed, and the ear placement grooves can be used to place the patient's ears, reducing the discomfort caused by the sponge splint 9 clamping the head for a long time. After the patient's head is clamped and fixed on both sides, the user can press the slide bar 23. At this time, the spring 1 is contracted by the external force, and the slide bar 23 slides downward, and the tooth block 3 fixed on one side thereof causes the gear 3 21 to rotate. When the gear 3 21 rotates, the rotating rod 26 connected to the rear side thereof rotates, and the transmission belt 22 drives the driven wheel to rotate. When the driven wheel rotates, the rotating rod 26 connected to it drives the gear 2 20 to rotate. When the gear 20 rotates, the tooth block 4 meshing with it drives the slide bar 3 25 to slide toward the inner side of the installation cavity 19, and the insertion rod 27 can be disengaged from the limit slot 3. At this time, the slide bar 1 2 is pressed downward so that the arc-shaped silicone plate is against the patient's forehead to limit and fix the patient's forehead. When the arc-shaped silicone plate slides to a suitable position, the slide bar 23 is released. At this time, the spring 1 can drive the slide bar 23 to slide upward without external force. Similarly, the insertion rod 27 can be embedded in the limit slot 3 at a suitable position to limit and fix the arc-shaped silicone plate, thereby completing the safe fixation of the head.

Claims

1. A head safety fixing device for ophthalmic surgery, characterized in that: The invention comprises a connecting rod (1), a mounting cavity (19) is provided inside one side of the connecting rod (1), an adjustment component is arranged inside the mounting cavity (19), the adjustment component is connected to a limit slot (3), and a plurality of limit slots (3) are provided at equal intervals on one side of a slide rod (2), the slide rod (2) passes through the center of the connecting rod (1) and is slidably connected thereto, an arc-shaped silicone plate is fixedly installed at the bottom end of the slide rod (2), electric telescopic rods (5) are fixedly installed inside both ends of the connecting rod (1), and one end of the electric telescopic rod (5) is fixedly connected to one side of a support rod (6), and the center of the support rod (6) is provided with a plurality of limit slots (3). A movable cavity is provided, and a clamping assembly (7) is provided in each movable cavity. The clamping assembly (7) is connected to a screw rod (8), and a mounting plate (18) is fixedly installed at one end of the screw rod (8). Auxiliary support plates are fixedly installed on both sides of the mounting plate (18). One end of the auxiliary support plate is respectively fixedly connected to two ends of one side of a sponge splint (9), and two groups of sponge splints (9) are arranged opposite to each other. The bottom end of the support rod (6) is connected to a height adjustment assembly, and the height adjustment assembly is arranged inside a movable seat (11). The movable seat (11) is arranged below the support rod (6), and the two groups of movable seats (11) are arranged opposite to each other.

2. A head safety fixing device for ophthalmic surgery according to claim 1, characterized in that: A card slot is provided on the opposite side of the movable seat (11), and a suction cup (14) is slidably installed in the card slot. The center of one end of the suction cup (14) is fixedly connected to one end of a screw rod three (15), and the screw rod three (15) passes through the bottom end of the movable seat (11) and is threadedly connected thereto.

3. The head safety fixing device for ophthalmic surgery according to claim 1, characterized in that: The height adjustment assembly is composed of a second screw rod (12) and a first slide groove (13). One side of the movable seat (11) is in contact with the bottom end of the support rod (6), and a first slide groove (13) is provided on one side of the movable seat (11). The second screw rod (12) is rotatably installed in the first slide groove (13), and one end of the second screw rod (12) passes through the bottom end of the movable seat (11) and is rotatably connected thereto. The second screw rod (12) passes through a slider and is threadedly connected thereto, and the slider is slidably installed in the first slide groove (13), and one side of the slider is fixedly connected to the bottom end of the support rod (6).

4. The head safety fixing device for ophthalmic surgery according to claim 1, characterized in that: The clamping assembly (7) is composed of a threaded rotating cylinder (16) and a motor (17). The motor (17) is fixedly installed on the inner wall of one side of the movable cavity. The sub-rotating shaft of the motor (17) is fixedly installed with a gear. One side of the gear is meshed with a tooth block 1 fixedly installed equidistantly on the outer side of the threaded rotating cylinder (16). A screw rod 1 (8) is installed through the threaded rotating cylinder (16) and is threadedly connected thereto. The screw rod 1 (8) penetrates the support rod (6) and is slidably connected thereto. A limit plate is rotatably installed on the other end of the screw rod 1 (8). The top end of the limit plate is fixedly connected to one end of a guide rod. The other end of the guide rod penetrates the support rod (6) and is slidably connected thereto. The other end of the guide rod is fixedly connected to a mounting plate (18).

5. The head safety fixing device for ophthalmic surgery according to claim 4, characterized in that: The sponge splint (9) is provided with an ear placement groove extending therethrough.

6. The head safety fixing device for ophthalmic surgery according to claim 1, characterized in that: The adjustment assembly is composed of gear 2 (20), gear 3 (21), transmission belt (22), slide bar 2 (23), slide groove 2 (24), slide bar 3 (25), rotating rod (26), and plug rod (27). The inner walls of both sides of the installation cavity (19) are respectively rotatably mounted with a driving wheel and a driven wheel, and the outer sides of the driving wheel and the driven wheel are sleeved with a transmission belt (22) and are transmission-connected thereto. One end of the driving wheel and the driven wheel is respectively mounted with a rotating rod (26), and one end of the rotating rod (26) is respectively fixedly mounted with gear 2 (20) and gear 3 (21). One side of the gear 3 (21) is meshedly connected with tooth block 3. The tooth block 3 is equidistantly fixedly mounted with a plurality of tooth blocks on one side of the slide bar 2 (23). The slide bar 2 ( The first gear (23) passes through the connecting rod (1) and is slidably connected thereto, and a spring (1) is sleeved on the outer side of one end of the sliding rod (23), and one end of the spring (1) is fixedly connected to the top of the connecting rod (1). The bottom side of the gear (20) is meshed with a tooth block (4), and the tooth block (4) is fixedly installed on one side of the sliding rod (25) at an equal distance, and an insertion rod (27) is fixedly installed on one end of the sliding rod (25), and one end of the insertion rod (27) passes through one side of the installation cavity (19) and is slidably connected thereto, and one end of the insertion rod (27) is engaged and connected to the limiting card slot (3), and a sliding groove (24) is provided at the bottom end of the installation cavity (19), and a movable block is slidably mounted in the sliding groove (24), and the movable block is fixedly connected to the sliding rod (25).

7. The head safety fixing device for ophthalmic surgery according to claim 1, characterized in that: A control component (10) is fixedly mounted on one side of the support rod (6), a battery and a control chip are mounted in the control component (10), and the control component (10) is electrically connected to the electric telescopic rod (5) and the motor (17).

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