Head fixing device for anesthesia in ophthalmologic operation
By designing a head fixation device for ophthalmic surgical anesthesia comprising a base, a support plate, an arc plate, a sliding plate, a tooth block and a bevel gear, the problem that the existing device cannot be adjusted is solved, and flexible adjustment and fixation of the headrest are achieved to adapt to the needs of different surgical positions and people, thereby improving the safety and comfort of the operation.
Patent Information
- Application Number
- CN202510931591.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-07
- Publication Date
- 2025-10-21
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Existing head fixation devices used for ophthalmic surgical anesthesia lack an adjustment mechanism, making it difficult to adjust the position and angle of the headrest according to different surgical posture requirements, resulting in the patient's head not being in the optimal fixed state.
The headrest adopts a structural design including a base, a support plate, an arc plate, a sliding plate, a tooth block, a bevel gear and a turning handle. The displacement adjustment of the headrest is achieved through the engagement of gears and the sliding of the sliding plate. Combined with the use of telescopic rods and springs, the headrest can be fixed and adapted to the head sizes of different people.
The headrest position and angle can be adjusted according to different surgical posture requirements, which improves the fixation effect of the patient's head, adapts to the head sizes of different people, and improves the safety and comfort during surgery.
Smart Images
Figure CN120814980A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of ophthalmic surgery, in particular to a head fixing device for anesthesia in ophthalmic surgery. Background Art
[0002] During ophthalmic surgery, local anesthesia (such as periorbital block and retrobulbar block) is often used. Patients are prone to involuntary head movements during anesthesia induction, maintenance, and recovery. If uncontrolled, these movements can collide with surgical instruments and interfere with the surgical process.
[0003] However, the headrest structure of the existing head fixation device used for ophthalmic surgical anesthesia is fixed and lacks an adjustment mechanism, making it difficult to adjust the position and angle of the headrest according to different surgical posture requirements. As a result, the patient's head may not be in the optimal fixed state in common surgical positions such as the supine position. Summary of the Invention
[0004] The present invention discloses a head fixation device for ophthalmic surgical anesthesia, which aims to solve the technical problem that the headrest structure of the existing head fixation device for ophthalmic surgical anesthesia is fixed, lacks an adjustment mechanism, and is difficult to adjust the position and angle of the headrest according to different surgical posture requirements, resulting in the patient's head may not be in the optimal fixed state in common surgical postures such as the supine position.
[0005] In order to achieve the above object, the present invention adopts the following technical solutions:
[0006] The cam is connected to the support frame of the second support bracket, and the cam is connected to the support frame by the support bracket.
[0007] In this solution, when different surgical positions are required for patient treatment, the mounting seat and the first bevel gear are engaged with each other, and at the same time, the other end of the first bevel gear is engaged with multiple tooth blocks on the outer wall of one side of one sliding plate inside the first headrest, so that when the handle connected to the outer wall of the mounting seat away from the first bevel gear is rotated, the mounting seat drives the first bevel gear to rotate, and the first bevel gear drives the multiple tooth blocks engaged with it to rotate together. At this time, the first headrest is driven to shift together through one of the sliding plates, thereby meeting the needs of different surgical positions (such as lateral position).
[0008] In a preferred solution, the sliding plate and the sliding groove are both arc-shaped structures, and the sliding plate is installed on the inner wall of the sliding groove.
[0009] In this solution, the sliding plate slides on the inner wall of the sliding groove, thereby driving the first headrest to shift.
[0010] In a preferred solution, a first clamping block is installed inside one of the arc-shaped plates, an outer wall on one side of the first clamping block is connected to a first telescopic rod, an outer wall of the first telescopic rod is sleeved with a first spring, and an outer wall on a side of the first clamping block away from the first telescopic rod is connected to a fixed groove formed by the outer walls of two adjacent tooth blocks.
[0011] In this solution, multiple tooth blocks on the outer wall of one of the sliding plates on the outer wall of one side of the first bevel gear of the first headrest are engaged with the first clamping block, and at the same time, one end of the first clamping block away from the tooth block is connected to the first telescopic rod, and the outer wall of the first telescopic rod is sleeved with a first spring. When the two sliding plates inside the first headrest slide in the sliding groove, the multiple tooth blocks sequentially push the first clamping block out of the fixed groove formed by the outer walls of the two adjacent tooth blocks, thereby causing the first telescopic rod to contract and the first spring to be compressed. When the first headrest is adjusted to the appropriate position, the rotation of the handle is stopped. At this time, under the action of the elastic force of the first spring, the first clamping block is pushed into the fixed groove formed by the outer walls of the two adjacent tooth blocks again, thereby fixing the first headrest.
[0012] In a preferred embodiment, a support seat is installed on the bottom outer wall of the base, and the top outer wall of the support seat is provided with two symmetrically distributed first connecting grooves, and a limiting groove is provided on one inner wall of the support seat. Two symmetrically distributed limiting blocks are connected to the inner wall of one side of the support seat, and the two limiting blocks slide on the inner wall of the same limiting groove, and the top outer walls of the two limiting blocks are connected to the second fixing block, and the interiors of the two second fixing blocks are connected to the same second screw, and the inner wall of the second fixing block is connected to a connecting rod, and the end of the connecting rod away from the second fixing block is connected to the first fixing block, and the top outer walls of the two first fixing blocks are connected to the bottom outer wall of the same base, and the first fixing block is attached to the inner wall of the first connecting groove.
[0013] In this solution, the first fixed block and the second fixed block are rotatably connected with the same connecting rod, and the top outer walls of the two first fixed blocks are connected to the bottom outer wall of the same base. When the height of the base needs to be raised, the second screw is rotated at this time to achieve the effect of the two second fixed blocks moving toward each other. At the same time, the limit block connected to the bottom outer wall of the second fixed block slides against the inner wall of the limit groove, thereby achieving the effect of limiting the movement of the second fixed block. When the two second fixed blocks move toward each other, the two first fixed blocks will drive the base to move upward, thereby achieving the effect of adjusting the height of the base.
[0014] In a preferred embodiment, two symmetrically distributed connecting plates are installed on the top outer wall of the first headrest, and a first screw is connected to the inside of the connecting plate, one end of the first screw is connected to a rotating block, and the outer wall of the rotating block on the side away from the first screw is connected to a first fixed plate, and the outer wall of the fixed plate on the side away from the first screw is provided with six hinge seats equidistantly distributed, and the inner wall of the hinge seat is connected to a hinge block, and the outer walls of every two hinge blocks on the side away from the fixed plate are connected to the same second fixed plate, and the outer wall of the second fixed plate on the side away from the fixed plate is provided with a plurality of second connecting grooves equidistantly distributed.
[0015] In this solution, by rotating the first screws on both sides of the outer wall of the top of the first headrest, the first screw and the connecting plate are connected together by threads, and the outer wall of the first screw passes through the interior of the connecting plate, wherein the first threaded rod and the first fixed plate are connected together by a rotating block, so as to achieve the effect of driving the first fixed plate to move by rotating the first screw. At this time, six equally distributed hinge seats are connected to the outer wall of the first fixed plate away from the first threaded rod, and the inner wall of the hinge seat is rotatably connected to the hinge block. At this time, the same second fixed plate is fixedly connected through the outer wall of one side of every two hinge blocks, and the contact surface of the second fixed plate and the patient's head is provided with multiple second connecting grooves, so that when the second fixed plate contacts both sides of the patient's head, the two hinge blocks installed on the outer wall of one side of the second fixed plate drive the second fixed plate to rotate within a certain range, so that the multiple second fixed plates on both sides of the patient's head can better fit on both sides of the patient's head, thereby achieving the effect of fixing the patient's head.
[0016] In a preferred embodiment, the first adjustment mechanism includes two symmetrically distributed push blocks installed on the outer wall of one side of the first headrest, the outer wall of one side of the push block is connected to a second clamping block, the outer wall of the second clamping block on the side away from the push block is connected to two symmetrically distributed second telescopic rods, the outer wall of the second telescopic rod is sleeved with a second spring, the outer wall of the second clamping block on the side away from the second telescopic rod is connected to a fixing strip, the bottom outer wall of the fixing strip is connected to the second headrest, the outer wall of one side of the second headrest is connected to a handle, and the outer wall of the fixing strip on the side close to the second clamping block is provided with a plurality of equidistantly distributed grooves, and one end of the second clamping block away from the second telescopic rod is clamped to the inner wall of the groove.
[0017] In this solution, when it is necessary to adapt to the heads of different people, such as children and adults, by pressing the two buttons on the outer wall of one side of the first headrest, and at the same time, the button is connected to the second card block at one end inside the first headrest, so that the two second telescopic rods installed on the outer wall of the second card block away from the button block are contracted and the two second springs are compressed, thereby causing the second card block to disengage from the groove. At this time, by pulling the handles on the outer wall of one side of the two second headrests, the second headrest can be pulled out, thereby expanding the width of the first headrest.
[0018] In a preferred embodiment, the top outer wall of the first headrest is connected to a plurality of second connecting blocks distributed at equal distances, the top outer wall of the second connecting block is connected to a second sponge pad, the top outer wall of the second sponge pad is connected to a plurality of first connecting blocks distributed at equal distances, and the top outer wall of the first connecting block is connected to a first sponge pad.
[0019] In this solution, the first headrest, the second sponge pad and the first sponge pad are connected together through multiple equally distributed second connecting blocks and the first connecting blocks. At the same time, the thickness of each layer of the first sponge pad and the second sponge pad is three centimeters. Therefore, when encountering children with smaller head circumferences, multiple first sponge pads and multiple second sponge pads can be installed according to the specific situation to adapt to the head circumference. When encountering young patients, multiple first sponge pads and multiple second sponge pads can be removed according to the specific situation to adapt to the head circumference. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 This is a schematic diagram of the overall structure of a head fixation device for ophthalmic surgical anesthesia proposed by the present invention.
[0021] Figure 2 This is a schematic structural diagram of the displacement mechanism of a head fixation device for ophthalmic surgical anesthesia proposed by the present invention.
[0022] Figure 3 This is a schematic diagram of the first headrest structure of a head fixation device for ophthalmic surgery anesthesia proposed by the present invention.
[0023] Figure 4 Schematic diagram of the first adjustment mechanism of the head fixation device for ophthalmic surgery anesthesia proposed by the present invention
[0024] Figure 5 This is a schematic diagram of the structure of the first sponge pad of a head fixation device for ophthalmic surgery anesthesia proposed by the present invention.
[0025] Figure 6 This is a schematic diagram of the support base structure of a head fixation device for ophthalmic surgical anesthesia proposed by the present invention.
[0026] Figure 7 Schematic diagram of the first fixing plate structure of the head fixing device for ophthalmic surgery anesthesia proposed by the present invention
[0027] Figure 8 for Figure 2 A magnified schematic diagram of the structure at point A.
[0028] Figure 9 for Figure 3 A magnified schematic diagram of the structure at point B.
[0029] Figure 10 for Figure 4 Enlarged schematic diagram of the structure at C.
[0030] Figure: 1, base; 2, support plate; 3, curved plate; 4, connecting plate; 5, first screw; 6, first fixing plate; 7, first headrest; 8, sliding plate; 9, placement groove; 10, press block; 11, second headrest; 12, first sponge pad; 13, second sponge pad; 14, handle; 15, first connecting block; 16, second connecting block; 17, support base; 18, first fixing block; 19, first connecting groove; 20, connecting rod; 21, second fixing Fixed block; 22. Second screw rod; 23. Limit block; 24. Limit groove; 25. Tooth block; 26. Mounting seat; 27. First bevel gear; 28. Second bevel gear; 29. Turning handle; 30. First clamping block; 31. First telescopic rod; 32. First spring; 33. Second clamping block; 34. Second telescopic rod; 35. Second spring; 36. Fixing bar; 37. Groove; 38. Rotating block; 39. Articulated seat; 40. Articulated block; 41. Second fixed plate. DETAILED DESCRIPTION
[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.
[0032] Reference Figure 1 、 Figure 2 and Figure 8 , a head fixation device for ophthalmic surgical anesthesia, comprising a base 1, the bottom outer wall of the base 1 is connected to a support seat 17, the top outer wall of the base 1 has two support plates 2 distributed at equal distances, the top outer wall of the support plate 2 is connected to an arc plate 3, one side outer wall of the two arc plates 3 is connected to the same first headrest 7, and also includes: a shifting mechanism: located on the inner wall of the other arc plate 3, the shifting mechanism includes two sliding plates 8, the two sliding plates 8 are symmetrically distributed on the inner wall of the arc plate 3, and a plurality of tooth blocks 25 are distributed at equal distances on the outer walls on the opposite sides of the two sliding plates 8, a sliding groove is provided inside the arc plate 3, one side outer wall of the arc plate 3 is connected to a mounting seat 26, a first bevel gear 27 is installed inside the mounting seat 26, the top outer wall of the first bevel gear 27 is connected to a second bevel gear 28, the first bevel gear 27 and the second bevel gear 28 are meshed with each other, the end of the second bevel gear 28 away from the first bevel gear 27 is connected to a rotating handle 29, and the end of the first bevel gear 27 away from the second bevel gear 28 is meshed with the plurality of tooth blocks 25.
[0033] The sliding plate 8 and the sliding groove are both arc-shaped structures. The sliding plate 8 is installed on the inner wall of the sliding groove. The sliding plate 8 slides on the inner wall of the sliding groove, thereby driving the first headrest 7 to shift.
[0034] During specific use, the mounting seat 26 and the first bevel gear 27 engage with each other, and at the same time, the other end of the first bevel gear 27 engages with multiple tooth blocks 25 on the outer wall of one side of one of the sliding plates 8 inside the first headrest 7, so that when the handle 29 connected to the outer wall of the mounting seat 26 away from the first bevel gear 27 is rotated, the mounting seat 26 drives the first bevel gear 27 to rotate, and the first bevel gear 27 drives the multiple tooth blocks 25 engaged with it to rotate together. At this time, the first headrest 7 is driven to shift together through one of the sliding plates 8, so as to meet the needs of different surgical positions (such as lateral position).
[0035] Reference Figure 3 and Figure 9 In a preferred embodiment, a first clamping block 30 is installed inside one of the arc-shaped plates 3, and an outer wall on one side of the first clamping block 30 is connected to a first telescopic rod 31. A first spring 32 is sleeved on the outer wall of the first telescopic rod 31, and an outer wall on the side of the first clamping block 30 away from the first telescopic rod 31 is connected to a fixed groove formed by the outer walls of two adjacent tooth blocks 25.
[0036] Specifically, multiple tooth blocks 25 on the outer wall of one of the sliding plates 8 on the outer wall of the first headrest 7 away from the first bevel gear 27 are engaged with the first clamping block 30, and at the same time, one end of the first clamping block 30 away from the tooth block 25 is connected to the first telescopic rod 31, and the outer wall of the first telescopic rod 31 is sleeved with a first spring 32. When the two sliding plates 8 inside the first headrest 7 slide in the sliding groove, the multiple tooth blocks 25 push the first clamping block 30 to disengage from the fixed groove formed by the outer walls of two adjacent tooth blocks 25 in turn, thereby causing the first telescopic rod 31 to contract and the first spring 32 to be compressed. When the first headrest 7 is adjusted to the appropriate position, the rotation of the turning handle 29 is stopped. At this time, under the action of the elastic force of the first spring 32, the first clamping block 30 is pushed into the fixed groove formed by the outer walls of two adjacent tooth blocks 25 again, thereby fixing the first headrest 7.
[0037] Reference Figure 1 and Figure 6 In a preferred embodiment, a support seat 17 is installed on the bottom outer wall of the base 1, and the top outer wall of the support seat 17 is provided with two symmetrically distributed first connecting grooves 19, and a limiting groove 24 is provided on one side inner wall of the support seat 17. Two symmetrically distributed limiting blocks 23 are connected to the inner wall of one side of the support seat 17. The two limiting blocks 23 slide on the inner wall of the same limiting groove 24, and the top outer walls of the two limiting blocks 23 are connected to the second fixing block 21. The inside of the two second fixing blocks 21 is connected with the same second screw 22, and the inner wall of the second fixing block 21 is connected with a connecting rod 20. The end of the connecting rod 20 away from the second fixing block 21 is connected to the first fixing block 18. The top outer walls of the two first fixing blocks 18 are connected to the bottom outer wall of the same base 1, and the first fixing block 18 is attached to the inner wall of the first connecting groove 19.
[0038] Among them, the outer wall of the second screw 22 passes through the interior of the two second fixed blocks 21. The second screw 22 is a bidirectional screw. When the second screw 22 is rotated, the bidirectional thread groove provided on its outer wall causes the two second fixed blocks 21 to move toward or oppositely, thereby pushing the base 1 up or down.
[0039] Specifically, the first fixed block 18 and the second fixed block 21 are rotatably connected with the same connecting rod 20, and the top outer walls of the two first fixed blocks 18 are connected to the bottom outer wall of the same base 1. When the height of the base 1 needs to be raised, the second screw 22 is rotated at this time to achieve the effect of the two second fixed blocks 21 moving toward each other. At the same time, the limit block 23 connected to the bottom outer wall of the second fixed block 21 slides on the inner wall of the limit groove 24, thereby achieving the effect of limiting the movement of the second fixed block 21. When the two second fixed blocks 21 move toward each other, the two first fixed blocks 18 will drive the base 1 to move upward, thereby achieving the effect of adjusting the height of the base 1.
[0040] Reference Figure 1 and Figure 7 In a preferred embodiment, two symmetrically distributed connecting plates 4 are installed on the top outer wall of the first headrest 7, and a first screw 5 is connected to the inside of the connecting plate 4. One end of the first screw 5 is connected to a rotating block 38, and the outer wall of the rotating block 38 on the side away from the first screw 5 is connected to a first fixed plate 6, and the outer wall of the first fixed plate 6 on the side away from the first screw 5 is provided with six hinge seats 39 equidistantly distributed, and the inner wall of the hinge seat 39 is connected to a hinge block 40, and the outer wall of each two hinge blocks 40 on the side away from the first fixed plate 6 is connected to the same second fixed plate 41, and the outer wall of the second fixed plate 41 on the side away from the first fixed plate 6 is provided with a plurality of second connecting grooves equidistantly distributed.
[0041] Specifically, by rotating the first screw 5 on both sides of the outer wall of the top of the first headrest 7, the first screw 5 is connected to the connecting plate 4 by a thread, and the outer wall of the first screw 5 passes through the interior of the connecting plate 4, wherein the first screw 5 and the first fixing plate 6 are connected together by a rotating block 38, thereby achieving the effect of driving the first fixing plate 6 to move by rotating the first screw 5. At this time, six equally distributed hinge seats 39 are connected to the outer wall of the first fixing plate 6 away from the first screw 5, and the inner wall of the hinge seat 39 is rotatably connected to the hinge block 40. At this time, the same second fixing plate 41 is fixedly connected to the outer wall of one side of every two hinge blocks 40, and the contact surface of the second fixing plate 41 and the patient's head is provided with multiple second connecting grooves, so that when the second fixing plate 41 contacts both sides of the patient's head, the two hinge blocks 40 installed on the outer wall of one side of the second fixing plate 41 drive the second fixing plate 41 to rotate within a certain range, thereby making the multiple second fixing plates 41 on both sides of the patient's head better fit on both sides of the patient's head, thereby achieving the effect of fixing the patient's head.
[0042] Reference Figure 1 、 Figure 3 、 Figure 4 and Figure 10 In a preferred embodiment, the first adjustment mechanism includes two symmetrically distributed pressing blocks 10 installed on the outer wall of one side of the first headrest 7, the outer wall of one side of the pressing block 10 is connected to a second clamping block 33, the outer wall of the second clamping block 33 away from the side of the pressing block 10 is connected to two symmetrically distributed second telescopic rods 34, the outer wall of the second telescopic rod 34 is sleeved with a second spring 35, the outer wall of the second clamping block 33 away from the second telescopic rod 34 is connected to a fixing bar 36, the bottom outer wall of the fixing bar 36 is connected to the second headrest 11, and the outer wall of one side of the second headrest 11 is connected to the handle 14, and the outer wall of the fixing bar 36 close to the second clamping block 33 is provided with a plurality of equidistantly distributed grooves 37, and one end of the second clamping block 33 away from the second telescopic rod 34 is clamped to the inner wall of the groove 37.
[0043] Two symmetrically distributed placement grooves 9 are provided inside the first headrest 7, and the handles 14 match the placement grooves 9. When the handles 14 are not needed, the two placement grooves 9 provided inside the first headrest 7 provide placement space for the two handles 14.
[0044] Specifically, by pressing the two buttons 10 on the outer wall of one side of the first headrest 7, and at the same time, the button block 10 is connected to the second clamping block 33 at one end inside the first headrest 7, the two second telescopic rods 34 installed on the outer wall of the second clamping block 33 away from the button block 10 are contracted and the two second springs 35 are compressed, thereby causing the second clamping block 33 to disengage from the groove 37. At this time, by pulling the handles 14 on the outer wall of one side of the two second headrests 11, the second headrest 11 is pulled out, thereby expanding the width of the first headrest 7.
[0045] Reference Figure 1 and Figure 5 In a preferred embodiment, the top outer wall of the first headrest 7 is connected to a plurality of second connecting blocks 16 distributed at equal distances, the top outer wall of the second connecting block 16 is connected to the second sponge pad 13, the top outer wall of the second sponge pad 13 is distributed with a plurality of first connecting blocks 15 distributed at equal distances, and the top outer wall of the first connecting block 15 is connected to the first sponge pad 12.
[0046] The first sponge pad 12 and the second sponge pad 13 are both arc-shaped structures. The first sponge pad 12 and the second sponge pad 13 fit the contour of the patient's head to improve the patient's comfort.
[0047] Specifically, the first headrest 7, the second sponge pad 13 and the first sponge pad 12 are clamped together through multiple equally distributed second connecting blocks 16 and the first connecting block 15, and the thickness of each layer of the first sponge pad 12 and the second sponge pad 13 is three centimeters. When encountering children with smaller head circumferences, multiple first sponge pads 12 and multiple second sponge pads 13 can be installed according to specific circumstances to adapt to the head circumference. When encountering young patients, multiple first sponge pads 12 and multiple second sponge pads 13 can be removed according to specific circumstances to adapt to the head circumference.
[0048] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.
Claims
1. A head fixation device for anesthesia in ophthalmic surgery, comprising a base (1), the bottom outer wall of the base (1) being connected to a support seat (17), the top outer wall of the base (1) being equidistantly provided with two support plates (2), the top outer wall of the support plate (2) being connected to an arcuate plate (3), one side outer wall of the two arcuate plates (3) being connected to the same first headrest (7), characterized in that: Also includes: A shifting mechanism is located on the inner wall of the other arc-shaped plate (3), and the shifting mechanism includes two sliding plates (8), the two sliding plates (8) are symmetrically distributed on the inner wall of the arc-shaped plate (3), and a plurality of tooth blocks (25) are equidistantly distributed on the outer walls of opposite sides of the two sliding plates (8). A sliding groove is provided inside the arc-shaped plate (3), and a mounting seat (26) is connected to an outer wall of one side of the arc-shaped plate (3). A first bevel gear (27) is installed inside the mounting seat (26), and a second bevel gear (28) is connected to the top outer wall of the first bevel gear (27). The first bevel gear (27) and the second bevel gear (28) are meshed with each other, and the end of the second bevel gear (28) away from the first bevel gear (27) is connected to a rotating handle (29), and the end of the first bevel gear (27) away from the second bevel gear (28) and the plurality of tooth blocks (25) are meshed with each other.
2. A head fixation device for ophthalmic surgery anesthesia according to claim 1, characterized in that: The sliding plate (8) and the sliding groove are both arc-shaped structures, and the sliding plate (8) is installed on the inner wall of the sliding groove.
3. The head fixation device for ophthalmic surgery anesthesia according to claim 1, characterized in that: A first clamping block (30) is installed inside one of the arc-shaped plates (3), an outer wall of one side of the first clamping block (30) is connected to a first telescopic rod (31), an outer wall of the first telescopic rod (31) is sleeved with a first spring (32), and an outer wall of a side of the first clamping block (30) away from the first telescopic rod (31) is connected to a fixed groove formed by the outer walls of two adjacent tooth blocks (25).
4. The head fixation device for ophthalmic surgery anesthesia according to claim 1, characterized in that: The bottom outer wall of the base (1) is provided with a support seat (17), the top outer wall of the support seat (17) is provided with two symmetrically distributed first connecting grooves (19), the inner wall of one side of the support seat (17) is provided with a limiting groove (24), the inner wall of one side of the support seat (17) is connected with two symmetrically distributed limiting blocks (23), the two limiting blocks (23) slide on the inner wall of the same limiting groove (24), the top outer walls of the two limiting blocks (23) are connected with a second fixing block (21), the interiors of the two second fixing blocks (21) are connected with the same second screw (22), the inner wall of the second fixing block (21) is connected with a connecting rod (20), the end of the connecting rod (20) away from the second fixing block (21) is connected with a first fixing block (18), the top outer walls of the two first fixing blocks (18) are connected to the bottom outer wall of the same base (1), and the first fixing block (18) is attached to the inner wall of the first connecting groove (19).
5. The head fixation device for ophthalmic surgery anesthesia according to claim 4, characterized in that: The outer wall of the second screw (22) passes through the interior of the two second fixing blocks (21), and the second screw (22) is a bidirectional screw.
6. The head fixation device for ophthalmic surgery anesthesia according to claim 1, characterized in that: The top outer wall of the first headrest (7) is provided with two symmetrically distributed connecting plates (4), the interior of the connecting plate (4) is connected with a first screw rod (5), one end of the first screw rod (5) is connected with a rotating block (38), the outer wall of the rotating block (38) away from the first screw rod (5) is connected with a first fixed plate (6), the outer wall of the first fixed plate (6) away from the first screw rod (5) is provided with six hinge seats (39) equidistantly distributed, the inner wall of the hinge seat (39) is connected with a hinge block (40), and the outer wall of each two hinge blocks (40) away from the first fixed plate (6) is connected with the same second fixed plate (41), and the outer wall of the second fixed plate (41) away from the first fixed plate (6) is provided with a plurality of second connecting grooves equidistantly distributed.
7. The head fixation device for ophthalmic surgery anesthesia according to claim 1, characterized in that: A first adjustment mechanism is installed on an outer wall of one side of the first headrest (7); The first adjustment mechanism comprises two symmetrically distributed pressing blocks (10) mounted on the outer wall of one side of the first headrest (7), one outer wall of the pressing block (10) is connected to a second clamping block (33), the outer wall of the second clamping block (33) away from the pressing block (10) is connected to two symmetrically distributed second telescopic rods (34), the outer wall of the second telescopic rod (34) is sleeved with a second spring (35), the outer wall of the second clamping block (33) away from the second telescopic rod (34) is connected to a fixing strip (36), the bottom outer wall of the fixing strip (36) is connected to the second headrest (11), the outer wall of one side of the second headrest (11) is connected to a handle (14), the outer wall of the fixing strip (36) close to the second clamping block (33) is provided with a plurality of grooves (37) distributed at equal distances, and one end of the second clamping block (33) away from the second telescopic rod (34) is clamped to the inner wall of the groove (37).
8. The head fixation device for ophthalmic surgery anesthesia according to claim 7, characterized in that: Two symmetrically distributed placement grooves (9) are provided inside the first headrest (7), and the handle (14) matches the placement grooves (9).
9. The head fixation device for ophthalmic surgery anesthesia according to claim 1, characterized in that: The top outer wall of the first headrest (7) is connected to a plurality of second connecting blocks (16) distributed at equal distances, the top outer wall of the second connecting block (16) is connected to a second sponge pad (13), the top outer wall of the second sponge pad (13) is connected to a plurality of first connecting blocks (15) distributed at equal distances, and the top outer wall of the first connecting block (15) is connected to a first sponge pad (12).
10. The head fixation device for ophthalmic surgery anesthesia according to claim 9, characterized in that: The first sponge pad (12) and the second sponge pad (13) are both arc-shaped structures.