Head fixing device with shielding function for ophthalmologic operation

Abstract

The invention discloses a head fixing device with a shielding function for ophthalmologic operation, and relates to the field of medical instruments, the head fixing device comprises a fixing block, and a second mounting groove is formed in the front side of the upper surface of the fixing block. By arranging the second mounting groove, the winding roller, the pressing plate, the spring and the third mounting groove and winding the sterile cloth on the winding roller, when the device is used for carrying out an ophthalmologic operation on a patient, a doctor pulls one end of the sterile cloth of the winding roller to unwind the sterile cloth wound on the winding roller, and then the patient is subjected to the ophthalmologic operation. Then, a pressing plate is pulled by a pull ring to move upwards to stretch a plurality of springs to enable the springs to generate pulling force, and at the moment, a doctor places one end of sterile cloth under the pressing plate and fixes the sterile cloth under the pressing plate by utilizing the pulling force of the springs, so that the problem that most of existing head fixing devices for ophthalmologic operations do not have a shielding function is solved; meanwhile, the head angle of the patient cannot be adjusted during use, and when the head angle of the patient needs to be adjusted, a doctor often needs to fix the head of the patient at a proper angle with hands.

Description

Technical Field

[0001] The invention relates to a head fixing device, in particular to a head fixing device with a shielding function for ophthalmic surgery. Background Art

[0002] The full name of ophthalmology is "eye disease specialist". It is a discipline that studies diseases occurring 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. Common ophthalmic diseases include: central serous retinopathy, dry eye, sympathetic ophthalmia, night blindness, chalazion, glaucoma, floaters, etc. Some ophthalmic diseases require surgical treatment. Common ophthalmic surgeries include cataract phacoemulsification, vitreoretinal surgery, strabismus surgery, etc. During ophthalmic surgery, the patient's head needs to be fixed with a head fixation device to prevent the patient from turning his head during the operation and affecting the surgical operation. During the operation, the non-surgical area of ​​the patient needs to be covered with sterile cloth to prevent bacteria in the non-surgical area from infecting the surgical area.

[0003] At present, there are still some defects and shortcomings in the use of head fixation devices for ophthalmic surgery. The specific areas that need to be improved are as follows:

[0004] 1. Most of the existing head fixation devices for ophthalmic surgery do not have a shielding function. Therefore, when the existing head fixation devices are actually used, doctors need to cut some large areas of sterile cloth on site to cover the patient's face, thereby reducing the doctor's surgical efficiency;

[0005] 2. The existing head fixation device for ophthalmic surgery cannot adjust the angle of the patient's head when in use. When the angle of the patient's head needs to be adjusted, the doctor often needs to use his hands to fix the patient's head at a suitable angle, thereby increasing the doctor's workload and causing a waste of doctor resources. Summary of the invention

[0006] The object of the present invention is to provide a head fixation device with a shielding function for ophthalmic surgery, so as to solve the problem that most of the existing head fixation devices for ophthalmic surgery mentioned in the above background technology do not have a shielding function. Therefore, when the existing head fixation devices are actually used, the doctor needs to cut some large-area sterile cloth on site to cover the patient's face, thereby reducing the doctor's surgical efficiency. At the same time, the existing head fixation device for ophthalmic surgery cannot adjust the patient's head angle when in use. When the patient's head angle needs to be adjusted, the doctor is often required to use his hands to fix the patient's head at a suitable angle, thereby increasing the doctor's workload and causing a waste of doctor resources.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a head fixing device with a shielding function for ophthalmic surgery, comprising a fixing block, a mounting groove 2 is provided on the front side of the upper surface of the fixing block, a winding roller is movably connected in the mounting groove 2, a mounting groove 3 is provided on the rear side of the upper surface of the fixing block, one end of multiple springs is fixedly connected to the inner wall of the lower side of the mounting groove 3, the upper ends of multiple springs are fixedly connected to the bottom surface of the same pressure plate, the pressure plate is overlapped on the upper surface of the fixing block, the upper surface of the fixing block is provided with a placement groove, two arc sliding grooves are provided in the placement groove, one end of the support rod is slidably connected in the two arc sliding grooves, the top ends of the two support rods are fixedly connected to the bottom surface of the same support plate, the bottom surface of the support plate is fixedly connected with an external gear ring, the external gear ring is meshedly connected to the gear, a fixing mechanism 1 is provided on the right side surface of the fixing block, and a fixing mechanism 2 is provided on the left side surface of the fixing block.

[0008] As a preferred technical solution of the present invention, the gear passes through the slot and is fixedly connected to the connecting shaft, the slot is opened on the inner wall of the placement slot, the right end of the connecting shaft is movably connected to the right inner wall of the installation slot one through a rolling bearing, the installation slot one is opened in the fixed block, and the slot connects the placement slot with the installation slot one.

[0009] As a preferred technical solution of the present invention, the left end of the connecting shaft passes through the left side of the fixed block through a rolling bearing and is fixedly connected to a worm wheel, the worm wheel is meshingly connected to the worm, the front end optical axis of the worm passes through the fixed plate through a rolling bearing and is fixedly connected to a rocker, and the fixed plate is fixedly connected to the left side of the fixed block.

[0010] As a preferred technical solution of the present invention, the fixing mechanism includes a screw rod, the optical axis at the left end of the screw rod is movably connected to the right side surface of the connecting block through a rolling bearing, a nut is threadedly connected to the screw rod, a connecting block is fixedly connected to the outer surface of the nut, a slot is provided on the upper surface of the connecting block, and one end of the plug rod is movably connected in the slot.

[0011] As a preferred technical solution of the present invention, the upper end of the insertion rod is fixedly connected to the bottom surface of a placing plate, the left side surface of the placing plate is movably connected with one end of a rotating shaft through a rolling bearing, the left end of the rotating shaft is fixedly connected to the right side surface of a splint, a sponge pad is fixedly connected to the left side surface of the splint, the splint is arranged as an arc-shaped plate, one end of a connecting rod is fixedly connected to the bottom surface of the nut, the bottom end of the connecting rod is slidably connected in a slide rail, and the left end of the slide rail is fixedly connected to the right side surface of the fixed block.

[0012] As a preferred technical solution of the present invention, a front end of the placement plate is fixedly connected to the outer surface of the sliding sleeve, the sliding sleeve is slidably connected to the sliding rod, and the left end of the sliding rod is fixedly connected to the right side surface of the fixed block.

[0013] As a preferred technical solution of the present invention, the second fixing mechanism includes a second placing plate, the second placing plate is fixedly connected to the left side of the fixing block, the right side of the second placing plate is movably connected to one end of a second rotating shaft through a rolling bearing, the right end of the second rotating shaft is fixedly connected to the left side of a second splint, a sponge pad is fixedly connected to the right side of the second splint, and the second splint is arranged as an arc-shaped plate.

[0014] As a preferred technical solution of the present invention, the support plate is an arc-shaped plate, the placement groove is an arc-shaped groove, the second installation groove is a cross-shaped groove, the sterile cloth is rolled up on the winding roller, and a pull ring is fixedly connected to the upper surface of the pressure plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention is provided with a second installation groove, a winding roller, a pressure plate, a spring and a third installation groove, and a sterile cloth is wound on the winding roller. When the device is used to perform ophthalmic surgery on a patient, the doctor pulls one end of the sterile cloth on the winding roller to release the sterile cloth wound on the winding roller, and then pulls the pressure plate upward through the pull ring to stretch the multiple springs so that the springs generate tension. At this time, the doctor places one end of the sterile cloth under the pressure plate and uses the spring tension to fix the sterile cloth under the pressure plate, so that the unfolded sterile cloth is used to cover the non-surgical facial parts of the patient, thereby preventing bacteria on other parts of the face from entering the surgical site and causing surgical site infection. At the same time, the use of the device can also avoid the need for the doctor to cut a large area of ​​sterile cloth during the operation, wasting surgical time, thereby increasing the convenience of the device and improving the doctor's surgical efficiency. At the same time, after the operation, the doctor can cut the unfolded sterile cloth on one side of the winding roller and discard the used sterile cloth, which is convenient for the doctor to deal with the contaminated medical waste after use.

[0017] 2. The present invention sets a fixing mechanism 1 and a fixing mechanism 2. When using the device to fix the patient's head, the patient first rests his head on the support plate, and makes the top of the patient's head fit tightly with the splint 2 in the fixing mechanism 2. Then the doctor rotates the placement plate 1 to connect the insertion rod with the slot on the connecting block. At this time, the doctor rotates the screw to drive the nut to move to the left. When the nut moves to the left, the splint 1 is driven to move to the left through the connecting block, the insertion rod, the placement plate 1 and the rotating shaft 1. When the splint 1 moves to fit tightly with the patient's lower jaw, the screw is stopped. The patient's head is fixed by the fixing mechanism 1 and the fixing mechanism 2, thereby preventing the patient's head from shaking during the operation and affecting the doctor's surgical operation.

[0018] 3. The present invention provides an outer gear ring, a support plate, a gear, a connecting shaft, a worm wheel and a worm. During the operation, the doctor can rotate the worm to drive the worm wheel and the connecting shaft to rotate. When the connecting shaft rotates, the meshing connection between the gear and the outer gear ring drives the support plate to rotate, so that the rotation of the support plate drives the patient's head to rotate, so that the doctor can fix the patient's head at a suitable angle according to the surgical requirements during the operation, thereby further increasing the functionality of the device. At the same time, a worm wheel and a worm are provided on the connecting shaft for connection, so that when the worm drives the worm wheel and the connecting shaft to rotate to adjust the angle of the support plate, the unidirectionality and self-locking property of the worm and worm wheel transmission are used to fix the position of the adjusted support plate, thereby fixing the patient's head at a fixed angle to prevent the patient's head from rotating during the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front view structural schematic diagram of the present invention;

[0020] Figure 2 It is a front cross-sectional structural schematic diagram of the present invention;

[0021] Figure 3 It is a right side cross-sectional structural schematic diagram of the present invention;

[0022] Figure 4 It is a structural schematic diagram of a fixing mechanism of the present invention;

[0023] Figure 5 It is a structural schematic diagram of the second fixing mechanism of the present invention;

[0024] Figure 6 It is a schematic diagram of the right side cross-sectional structure of the placement plate of the present invention.

[0025] In the figure: 1 fixed block, 2 mounting groove 1, 3 connecting shaft, 4 notch, 5 gear, 6 arc-shaped slide groove, 7 support rod, 8 support plate, 9 placement groove, 10 fixing mechanism 1, 11 pressure plate, 12 pull ring, 13 external gear ring, 14 fixing mechanism 2, 15 worm gear, 16 worm, 17 fixed plate, 18 mounting groove 2, 19 winding roller, 20 slide rod, 21 sleeve, 22 spring, 23 mounting groove 3, 101 screw, 102 placement plate 1, 103 plug rod, 104 nut, 105 connecting rod, 106 slide rail, 107 connecting block, 108 slot, 109 rotating shaft 1, 110 splint 1, 141 placement plate 2, 142 rotating shaft 2, 143 splint 2. DETAILED DESCRIPTION

[0026] 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 described embodiments 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.

[0027] See also Figure 1-6The present invention provides a technical solution of a head fixing device with a shielding function for ophthalmic surgery: comprising a fixing block 1, a mounting groove 2 18 is provided on the front side of the upper surface of the fixing block 1, a winding roller 19 is movably connected in the mounting groove 2 18, and the winding roller 19 is movably connected to the mounting groove 2 18, so that it is convenient for the doctor to cover the patient's face with the sterile cloth on the winding roller 19, and it is convenient for the doctor to replace the winding roller 19 after the sterile cloth is used up, a mounting groove 3 23 is provided on the rear side of the upper surface of the fixing block 1, one end of a plurality of springs 22 is fixedly connected to the inner wall of the lower side of the mounting groove 3 23, and the upper ends of the plurality of springs 22 are fixedly connected to the bottom surface of the same pressing plate 11, by providing the mounting groove 3 23 on the upper surface of the fixing block 1, and in the mounting groove A plurality of springs 22 are arranged in the groove three 23 and connected with the pressing plate 11, so that when the device is used, the tension of the spring 22 is used to pull the pressing plate 11 into close contact with the upper surface of the fixed block 1, and then the tension of the spring 22 is used to clamp and fix one end of the sterile cloth between the pressing plate 11 and the fixed block 1, so that the non-surgical facial parts of the patient are covered with the fixed sterile cloth, the pressing plate 11 is overlapped on the upper surface of the fixed block 1, and a placement groove 9 is provided on the upper surface of the fixed block 1, and two arc-shaped slide grooves 6 are provided in the placement groove 9, and one end of the support rod 7 is slidably connected in the two arc-shaped slide grooves 6, and the top ends of the two support rods 7 are fixedly connected to the bottom surface of the same support plate 8, by providing an arc-shaped slide groove 6 in the placement groove 9, and the support rod 7 is slidably connected with the arc-shaped slide groove 6. The support plate 8 is connected, so that the support plate 8 is fixedly supported by the support rod 7, thereby improving the stability of the support plate 8 when in use. An outer toothed ring 13 is fixedly connected to the bottom surface of the support plate 8, and the outer toothed ring 13 is meshedly connected to the gear 5. By providing the outer toothed ring 13 on the support plate 8 and meshingly connecting the outer toothed ring 13 to the gear 5, the connection between the gear 5 and the outer toothed ring 13 is used to drive the support plate 8 to rotate when the gear 5 rotates, and the rotation of the support plate 8 is used to drive the patient's head to rotate, so that it is convenient for the doctor to fix the patient's head at a suitable angle according to the surgical requirements during the operation, thereby further increasing the functionality of the device. A fixing mechanism 10 is provided on the right side surface of the fixing block 1, and a fixing mechanism 10 is provided on the left side surface of the fixing block 1. Fixed mechanism 2 14, gear 5 passes through notch 4 and is fixedly connected to connecting shaft 3, notch 4 is provided on the inner wall of placement groove 9, the right end of connecting shaft 3 is movably connected to the right inner wall of mounting groove 1 2 through rolling bearing, mounting groove 1 2 is provided in fixing block 1, notch 4 penetrates and connects placement groove 9 with mounting groove 1 2, the left end of connecting shaft 3 passes through the left side of fixing block 1 through rolling bearing and is fixedly connected with worm wheel 15, worm wheel 15 is meshingly connected to worm 16, worm wheel 15 is provided on connecting shaft 3 and connected with worm 16, so that when worm 16 is used to drive worm wheel 15 and connecting shaft 3 to rotate to adjust the angle of support plate 8, the unidirectionality and self-locking property of transmission of worm 16 and worm wheel 15 are used to fix the position of support plate 8 after adjustment,Thereby, the patient's head is fixed at a fixed angle to prevent the patient's head from rotating during the operation. The front optical axis of the worm 16 passes through the fixing plate 17 through a rolling bearing and is fixedly connected to a rocker. The fixing plate 17 is fixedly connected to the left side of the fixing block 1. The fixing mechanism 10 includes a screw 101. The optical axis at the left end of the screw 101 is movably connected to the right side of the connecting block 1 through a rolling bearing. A nut 104 is threadedly connected to the screw 101. A connecting block 107 is fixedly connected to the outer surface of the nut 104. A slot 108 is provided on the upper surface of the connecting block 107. One end of a rod 103 is movably connected in the slot 108. The upper end of the rod 103 is fixedly connected to the bottom surface of the placing plate 102. The slot 108 and the rod 103 are arranged to connect the connecting block 107 and the placing plate 102. The placing plate 102 is movably connected, so that the user can rotate the placing plate 102 to adjust the position of the placing plate 102, and then it is convenient for the patient to rest his head on the support plate 8 for surgical treatment. The left side of the placing plate 102 is movably connected with one end of the rotating shaft 109 through a rolling bearing, and the left end of the rotating shaft 109 is fixedly connected to the right side of the splint 110. By setting the rotating shaft 109, the splint 110 is movably connected to the placing plate 102, so that when the support plate 8 drives the patient's head to rotate, the splint 110 can drive the rotating shaft 109 to rotate with the patient's head. A sponge pad is fixedly connected to the left side of the splint 110. The splint 110 is set as an arc plate. The bottom surface of the nut 104 is fixedly connected with a connecting rod 105. The bottom end of the connecting rod 105 is slidably connected to the slide rail 106. The connecting rod 105 is provided on the bottom surface of the nut 104, and the connecting rod 105 is slidably connected to the slide rail 106, so that the connection between the connecting rod 105 and the slide rail 106 is used to limit the nut 104, thereby preventing the screw 101 from driving the nut 104 to rotate. The left end of the slide rail 106 is fixedly connected to the right side of the fixed block 1, the front end of the placement plate 102 is fixedly connected to the outer surface of the sliding sleeve 21, the sliding sleeve 21 is slidably connected to the sliding rod 20, and the left end of the sliding rod 20 is fixedly connected to the right side of the fixed block 1. The fixing mechanism 2 14 includes a placement plate 2 141, which is fixedly connected to the left side of the fixed block 1. The right side of the placement plate 2 141 is rolled The bearing is movably connected with one end of the second rotating shaft 142, and the right end of the second rotating shaft 142 is fixedly connected to the left side of the second clamp 143. The right side of the second clamp 143 is fixedly connected with a sponge pad. The second clamp 143 is set as an arc plate. By setting sponge pads on the opposite surfaces of the first clamp 110 and the second clamp 143, the sponge pad is used to improve the comfort of the user when using the device. The first clamp 110 and the second clamp 143 are both set as arc plates, so that the first clamp 110 and the second clamp 143 are more in line with the patient's head to improve the fixing effect. The support plate 8 is set as an arc plate, the placement groove 9 is set as an arc groove, the second installation groove 18 is set as a cross groove, and the sterile cloth is rolled up on the winding roller 19. The pull ring 12 is fixedly connected to the upper surface of the pressure plate 11.

[0028] The operating steps of the present invention are:

[0029] When using the device to fix the patient's head, the doctor first instructs the patient to place his head on the support plate 8, and makes the top of the patient's head close to the right side of the second splint 143, and then the doctor rotates the placement plate 102 to make the sliding sleeve 21 rotate on the sliding rod 20, and stops rotating the placement plate 102 when the placement plate 102 rotates to drive the insertion rod 103 to connect with the slot 108 on the connecting block 107, and then the doctor rotates the screw rod 101 to drive the nut 104 to move left, and when the nut 104 moves to the left, it drives the connecting rod 105 to move left along the slide rail 106, and when the nut 104 moves to the left, it drives the placement plate 102 to move left through the connection between the connecting block 107 and the insertion rod 103, and when the placement plate 102 moves to the left, it drives the splint 110 to move left through the rotating shaft 109, and when the splint 110 moves to the left until it is closely fitted with the patient's lower jaw, the screw rod 101 is stopped;

[0030] Then the doctor adjusts the patient's head to a suitable angle according to the surgical requirements. When adjusting the patient's head angle, the doctor rotates the worm 16 through the rocker to drive the worm wheel 15 to rotate. When the worm wheel 15 rotates, it drives the connecting shaft 3 and the gear 5 to rotate. When the gear 5 rotates, it drives the placement plate 8 to rotate through the meshing connection with the outer gear ring 13. When the placement plate 8 drives the patient to rotate the head to a suitable angle, the worm 16 stops rotating. Then the doctor pulls one end of the sterile cloth on the winding roller 19 to unfold the sterile cloth on the winding roller 19.

[0031] At this time, the doctor pulls the pull ring 12 to drive the pressure plate 11 to move upward. When the pressure plate 11 moves upward, the multiple springs 22 are stretched to make the springs 22 generate tension. Then the user places one end of the sterile cloth under the pressure plate 11 and loosens the pressure plate 11. At this time, the tension of the multiple springs 22 is used to move the pressure plate 11 downward to fix one end of the sterile cloth between the fixed block 1 and the pressure plate 11, so that the sterile cloth is used to cover the non-surgical facial parts of the patient. After the operation, the doctor cuts the used sterile cloth at one end of the winding roller 19, thereby cutting and discarding the used sterile cloth, and then the doctor turns the screw 101 to separate the splint 102 from the patient's head.

[0032] In the description of the present invention, it is necessary to understand that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is 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 a limitation on the present invention.

[0033] In the present invention, unless otherwise clearly stipulated and limited, for example, it can be a fixed connection, a detachable connection, or an integrated one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A head fixing device with shielding function for ophthalmic surgery, comprising a fixing block (1), characterized in that: The front side of the upper surface of the fixed block (1) is provided with a second mounting groove (18), and a winding roller (19) is movably connected in the second mounting groove (18). The rear side of the upper surface of the fixed block (1) is provided with a third mounting groove (23), and one end of a plurality of springs (22) is fixedly connected to the inner wall of the lower side of the third mounting groove (23). The upper ends of the plurality of springs (22) are all fixedly connected to the bottom surface of the same pressing plate (11), and the pressing plate (11) is overlapped on the upper surface of the fixed block (1). The upper surface of the fixed block (1) is provided with a placement groove ( 9), two arc-shaped slide grooves (6) are provided in the placement groove (9), one end of a support rod (7) is slidably connected in the two arc-shaped slide grooves (6), the top ends of the two support rods (7) are fixedly connected to the bottom surface of the same support plate (8), an outer tooth ring (13) is fixedly connected to the bottom surface of the support plate (8), and the outer tooth ring (13) is meshingly connected to the gear (5), a fixing mechanism 1 (10) is provided on the right side surface of the fixing block (1), and a fixing mechanism 2 (14) is provided on the left side surface of the fixing block (1).

2. The head fixing device with shielding function for ophthalmic surgery according to claim 1, characterized in that: The gear (5) passes through the notch (4) and is fixedly connected to the connecting shaft (3); the notch (4) is formed on the inner wall of the placement groove (9); the right end of the connecting shaft (3) is movably connected to the right inner wall of the installation groove (2) through a rolling bearing; the installation groove (2) is formed in the fixing block (1); and the notch (4) connects the placement groove (9) with the installation groove (2).

3. The head fixing device with shielding function for ophthalmic surgery according to claim 2, characterized in that: The left end of the connecting shaft (3) passes through the left side surface of the fixed block (1) through a rolling bearing and is fixedly connected to a worm wheel (15); the worm wheel (15) is meshingly connected to a worm (16); the front optical axis of the worm (16) passes through a fixed plate (17) through a rolling bearing and is fixedly connected to a rocker; the fixed plate (17) is fixedly connected to the left side surface of the fixed block (1).

4. The head fixing device with shielding function for ophthalmic surgery according to claim 1, characterized in that: The fixing mechanism (10) comprises a screw rod (101), the optical axis at the left end of the screw rod (101) is movably connected to the right side surface of the connecting block (1) via a rolling bearing, a nut (104) is threadedly connected to the screw rod (101), a connecting block (107) is fixedly connected to the outer surface of the nut (104), a slot (108) is provided on the upper surface of the connecting block (107), and one end of the insertion rod (103) is movably connected in the slot (108).

5. The head fixing device with shielding function for ophthalmic surgery according to claim 4, characterized in that: The upper end of the insertion rod (103) is fixedly connected to the bottom surface of the placement plate (102); the left side surface of the placement plate (102) is movably connected to one end of a rotating shaft (109) via a rolling bearing; the left end of the rotating shaft (109) is fixedly connected to the right side surface of a clamping plate (110); a sponge pad is fixedly connected to the left side surface of the clamping plate (110); the clamping plate (110) is an arc-shaped plate; one end of a connecting rod (105) is fixedly connected to the bottom surface of the nut (104); the bottom end of the connecting rod (105) is slidably connected to the inside of a slide rail (106); the left end of the slide rail (106) is fixedly connected to the right side surface of the fixed block (1).

6. The head fixing device with shielding function for ophthalmic surgery according to claim 5, characterized in that: The front end of the placement plate 1 (102) is fixedly connected to the outer surface of the sliding sleeve (21), the sliding sleeve (21) is slidably connected to the sliding rod (20), and the left end of the sliding rod (20) is fixedly connected to the right side surface of the fixed block (1).

7. The head fixing device with shielding function for ophthalmic surgery according to claim 1, characterized in that: The second fixing mechanism (14) comprises a second placing plate (141), the second placing plate (141) is fixedly connected to the left side of the fixing block (1), the right side of the second placing plate (141) is movably connected to one end of a second rotating shaft (142) via a rolling bearing, the right end of the second rotating shaft (142) is fixedly connected to the left side of a second clamping plate (143), the right side of the second clamping plate (143) is fixedly connected to a sponge pad, and the second clamping plate (143) is arranged as an arc-shaped plate.

8. The head fixing device with shielding function for ophthalmic surgery according to claim 1, characterized in that: The support plate (8) is an arc-shaped plate, the placement groove (9) is an arc-shaped groove, the second installation groove (18) is a cross-shaped groove, a sterile cloth is rolled up on the winding roller (19), and a pull ring (12) is fixedly connected to the upper surface of the pressing plate (11).

Images