Head fixing equipment

Abstract

The utility model discloses a head fixing device which comprises a supporting shell and a fixing base, supporting plates are fixedly connected to the two sides of the top of the fixing base, a bearing plate is fixedly connected to the tops of the supporting plates, a supporting frame is fixedly connected to the top of the bearing plate, and a nut is fixedly connected to the top of an inner cavity of the supporting frame. And an inner cavity of the nut is in threaded connection with a first bolt. By means of the nut and the first bearing, the first bolt can rotate in the inner cavity of the first bolt, when the threads on the surface of the first bolt are in threaded connection with the threads in the inner cavity of the nut, the first bolt rotates to move up and down, if the first bolt rotates forwards, the first bolt moves downwards, and otherwise, the first bolt moves downwards. The first bolt rotates reversely to move upwards, and when the first bolt rotates forwards to move downwards, the pushing plate is pushed to move, so that the pushing plate pushes the pushing rod to move, and the pushing rod moves to push the first C-shaped limiting ring to move.

Description

Technical Field

[0001] The utility model relates to the technical field of ophthalmology, in particular to a head fixing device. 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. During the examination of ophthalmic diseases, in order to prevent the patient's head from shaking, it is necessary to fix the head, so a head fixation device is needed;

[0003] However, during the use of the existing head fixation device, since it is a preoperative examination, the patient is usually seated on a chair, and then the patient's lower jaw is placed on the surface of the lower clamp, and then the lower clamp is used to press down to fix the patient's head. However, since the radius area of ​​the upper and lower clamps is fixed, and the sizes of patients' heads are different, when the patient's head is too small, the inner side of the clamp cannot fit the patient's head, so the patient's head cannot be fixed. When the eyes are examined, pain may easily cause the patient's head to shake, which brings trouble to the medical staff's examination work. For this reason, we propose a head fixation device. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a head fixing device that achieves a good fixing effect.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a head fixing device, comprising a supporting shell and a fixing seat, both sides of the top of the fixing seat are fixedly connected to a supporting plate, the top of the supporting plate is fixedly connected to a bearing plate, the top of the bearing plate is fixedly connected to a supporting frame, and the top of the inner cavity of the supporting frame is fixedly connected to a nut, the inner cavity of the nut is threadedly connected to a first bolt, the top of the first bolt is fixedly connected to a hand crank, the bottom of the first bolt is rotatably connected to a first bearing, the bottom of the first bearing is fixedly connected to a pushing plate, both sides of the bottom of the pushing plate are fixedly connected to a pushing rod, and the bottom of the pushing rod is fixedly connected to a first C-shaped limiting ring, both sides of the first C-shaped limiting ring are fixedly connected to a slide, both sides of the top of the first C-shaped limiting ring are threadedly connected to a second bolt, one side of the second bolt is fixedly connected to a limiting circular pad, and the top of the fixed seat is fixedly connected to a second C-shaped limiting ring.

[0008] As a preferred solution, a fixing plate is fixedly connected to the bottom of the supporting shell, and a tripod is fixedly connected to the bottom of the fixing plate.

[0009] Through the above technical solution, the stability of the support for the equipment is improved through the tripod.

[0010] As a preferred embodiment, a frame plate is fixedly connected to one side of the bottom of the inner cavity of the support shell, an electric push rod is fixedly connected to the top of the frame plate, a sliding rod is fixedly connected to the top of the electric push rod, and the right side of the sliding rod is fixedly connected to the left side of the fixing seat.

[0011] Through the above technical solution, the electric push rod is used to facilitate the movement of the sliding rod, so that the sliding rod drives the fixed seat to move. The staff can adjust the height of the second C-shaped limit ring according to the patient's sitting height, thereby improving the efficiency of the inspection and solving the troubles of the staff.

[0012] As a preferred solution, a slide rail is fixedly connected to the left side of the inner cavity of the support shell, and the left side of the slide rod is slidably connected to the inner cavity of the slide rail.

[0013] Through the above technical solution, the sliding stability of the sliding rod is improved through the sliding rail.

[0014] As a preferred solution, a sliding groove is provided on the side of the supporting shell, and the right side of the fixing seat is slidably connected to the inner cavity of the sliding groove.

[0015] Through the above technical solution, the sliding stability of the fixed seat is improved through the sliding groove.

[0016] As a preferred solution, a spring is fixedly connected to the bottom of the push plate, and a second bearing is provided at the connection between one side of the second bolt and the limiting circular pad.

[0017] Through the above technical solution, the rotation stability of the second bolt is improved through the bearing.

[0018] (III) Beneficial effects

[0019] Compared with the prior art, the utility model provides a head fixing device having the following beneficial effects.

[0020] 1. The utility model can make the first bolt rotate in its inner cavity through the nut and the first bearing. Since the thread on the surface of the first bolt and the thread in the inner cavity of the nut are threadedly connected, the rotation of the first bolt enables itself to move up and down. For example, forward rotation makes the first bolt move downward. Conversely, the reverse rotation of the first bolt makes itself move upward. When the first bolt moves downward in the forward direction, it pushes the push plate to move, so that the push plate pushes the push rod to move. The movement of the push rod pushes the first C-type limiting ring to move. The movement of the first C-type limiting ring tightly fits the patient's head, which can effectively fix the patient's head and can be suitable for the height from the top of the head to the lower jaw of different patients, thereby improving the efficiency of fixation. Through the second bolt, it is convenient to rotate in the screw hole on the surface of the first C-type limiting ring. When the thread in the inner cavity of the screw hole and the second bolt are threadedly connected, at the same time, through the cooperation of the second bearing, the rotation of the second bolt pushes the limiting circular pad to move, so that the limiting circular pad fits the patient's head, which can be suitable for the width from the left side to the right side of the head of different patients, thereby improving the efficiency of fixation.

[0021] 2. The utility model facilitates the movement of the sliding rod by means of an electric push rod, so that the sliding rod drives the fixed seat to move. The staff can adjust the height of the second C-shaped limit ring according to the sitting height of the patient, thereby improving the efficiency of the inspection and solving the troubles of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the utility model;

[0023] Figure 2 For this utility model Figure 1 A local enlarged view of point A in FIG.

[0024] Figure 3 This is a cross-sectional view of the support shell structure of the utility model.

[0025] In the figure: 1. support shell; 2. fixing seat; 3. second C-type limit ring; 4. slide plate; 5. first C-type limit ring; 6. bearing plate; 7. push rod; 8. push plate; 9. support frame; 10. first bolt; 11. support plate; 12. hand crank; 13. spring; 14. second bolt; 15. limit circular washer; 16. nut; 17. first bearing; 18. slide rail; 19. slide rod; 20. electric push rod; 21. frame plate. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-3 The utility model: a head fixing device comprises a supporting shell 1 and a fixing seat 2, both sides of the top of the fixing seat 2 are fixedly connected with a supporting plate 11, the top of the supporting plate 11 is fixedly connected with a bearing plate 6, the top of the bearing plate 6 is fixedly connected with a supporting frame 9, and the top of the inner cavity of the supporting frame 9 is fixedly connected with a nut 16, the inner cavity of the nut 16 is threadedly connected with a first bolt 10, the top of the first bolt 10 is fixedly connected with a hand crank 12, the bottom of the first bolt 10 is rotatably connected with a first bearing 17, the bottom of the first bearing 17 is fixedly connected with a pushing plate 8, both sides of the bottom of the pushing plate 8 are fixedly connected with a pushing rod 7, and the bottom of the pushing rod 7 is fixedly connected with a first C-type limiting ring 5, both sides of the first C-type limiting ring 5 are fixedly connected with a slide plate 4, both sides of the top of the first C-type limiting ring 5 are threadedly connected with a second bolt 14, one side of the second bolt 14 is fixedly connected with a limiting circular pad 15, and the top of the fixing seat 2 is fixedly connected with a second C-type limiting ring 3.

[0028] Through the above technical solution, the first bolt 10 can be rotated in its inner cavity through the nut 16 and the first bearing 17. Since the thread on the surface of the first bolt 10 and the thread in the inner cavity of the nut 16 are threadedly connected, the first bolt 10 can move up and down when it rotates. For example, the first bolt 10 moves downward when it rotates forward. On the contrary, the first bolt 10 moves upward when it reverses. When the first bolt 10 moves downward when it rotates forward, it pushes the push plate 8 to move, so that the push plate 8 pushes the push rod 7 to move. The movement of the push rod 7 pushes the first C-shaped limit ring 5 to move, and the first C-shaped limit ring 5 moves when the first bolt 10 moves forward. When a C-shaped limiting ring 5 moves, it fits tightly against the patient's head, which can effectively fix the patient's head and can be suitable for the height from the top of the head to the chin of different patients, thereby improving the fixation efficiency. Through the second bolt 14, it is convenient to rotate in the screw hole on the surface of the first C-shaped limiting ring 5. When the thread of the inner cavity of the screw hole and the second bolt 14 are threadedly connected, at the same time, through the cooperation of the second bearing, the rotation of the second bolt 14 pushes the limiting circular pad 15 to move, so that the limiting circular pad 15 fits against the patient's head and can be suitable for the width from the left to the right side of the head of different patients, thereby improving the fixation efficiency.

[0029] Specifically, the bottom of the support shell 1 is fixedly connected to a fixing plate, and the bottom of the fixing plate is fixedly connected to a tripod, one side of the bottom of the inner cavity of the support shell 1 is fixedly connected to a shelf 21, the top of the shelf 21 is fixedly connected to an electric push rod 20, the top of the electric push rod 20 is fixedly connected to a sliding rod 19, the right side of the sliding rod 19 is fixedly connected to the left side of the fixed seat 2, the left side of the inner cavity of the support shell 1 is fixedly connected to a slide rail 18, the left side of the sliding rod 19 is slidably connected to the inner cavity of the slide rail 18, a slide groove is opened on the side of the support shell 1, and the right side of the fixed seat 2 is slidably connected to In the inner cavity of the slide groove, a spring 13 is fixedly connected to the bottom of the push plate 8, and a second bearing is provided at the connection between one side of the second bolt 14 and the limiting circular pad 15. When the height of the fixed seat 2 needs to be adjusted, the user starts the electric push rod 20 through the external controller, and pushes the sliding rod 19 to move through the electric push rod 20, so that the sliding rod 19 drives the fixed seat 2 to move. Through the movement of the fixed seat 2, the staff can adjust the height of the second C-shaped limiting ring 3 according to the patient's sitting posture and height, thereby improving the efficiency of the inspection and solving the troubles of the staff.

[0030] The working principle of the utility model is as follows: first, the user starts the electric push rod 20 through the external controller, and the electric push rod 20 pushes the sliding rod 19 to move, so that the sliding rod 19 drives the fixed seat 2 to move. Through the movement of the fixed seat 2, the staff can adjust the height of the second C-shaped limit ring 3 according to the patient's sitting posture and height, thereby improving the efficiency of the inspection and solving the troubles of the staff. Then the user places the patient's lower jaw on the surface of the second C-shaped limit ring 3, and then the user holds the hand crank 12 and rotates it, and the hand crank 12 drives the first bolt 10 to rotate in the inner cavity of the nut 16 and the first bearing 17. Since the thread on the surface of the first bolt 10 and the thread in the inner cavity of the nut 16 are threadedly connected, the rotation of the first bolt 10 enables itself to move up and down. If it rotates forward, it makes the first bolt 10 move downward. Conversely, the first bolt 10 reverses and moves itself upward. When the first bolt 10 is turned forward, When it moves down, it pushes the pushing plate 8 to move, so that the pushing plate 8 pushes the pushing rod 7 to move, and the movement of the pushing rod 7 pushes the first C-shaped limiting ring 5 to move. The movement of the first C-shaped limiting ring 5 can tightly fit the patient's head, which can effectively fix the patient's head and can be suitable for the height from the top of the head to the lower jaw of different patients, thereby improving the fixation efficiency. Then the user twists the second bolt 14 to rotate, and the second bolt 14 rotates in the screw hole on the surface of the first C-shaped limiting ring 5. Since the thread in the inner cavity of the screw hole and the thread on the surface of the second bolt 14 are threadedly connected, the rotation of the second bolt 14 causes itself to move, moving inward in the forward direction and moving outward in the reverse direction. At the same time, through the cooperation of the second bearing, the forward rotation of the second bolt 14 pushes the limiting circular pad 15 to move inward, so that the limiting circular pad 15 fits the patient's head, which can be suitable for the width from the left to the right side of the head of different patients, thereby improving the fixation efficiency.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.

Claims

1. A head fixing device, comprising a supporting shell (1) and a fixing seat (2), characterized in that: Both sides of the top of the fixing seat (2) are fixedly connected to support plates (11), the top of the support plate (11) is fixedly connected to a bearing plate (6), the top of the bearing plate (6) is fixedly connected to a support frame (9), and the top of the inner cavity of the support frame (9) is fixedly connected to a nut (16), the inner cavity of the nut (16) is threadedly connected to a first bolt (10), the top of the first bolt (10) is fixedly connected to a hand crank (12), the bottom of the first bolt (10) is rotatably connected to a first bearing (17), and the first bearing ( 17), a pushing plate (8) is fixedly connected to the bottom, pushing rods (7) are fixedly connected to both sides of the bottom of the pushing plate (8), and a first C-shaped limiting ring (5) is fixedly connected to the bottom of the pushing rod (7), a slide plate (4) is fixedly connected to both sides of the first C-shaped limiting ring (5), a second bolt (14) is threadedly connected to both sides of the top of the first C-shaped limiting ring (5), a limiting circular pad (15) is fixedly connected to one side of the second bolt (14), and a second C-shaped limiting ring (3) is fixedly connected to the top of the fixing seat (2).

2. A head fixing device according to claim 1, characterized in that: The bottom of the support shell (1) is fixedly connected to a fixing plate, and the bottom of the fixing plate is fixedly connected to a tripod.

3. A head fixing device according to claim 1, characterized in that: A frame plate (21) is fixedly connected to one side of the bottom of the inner cavity of the support shell (1), an electric push rod (20) is fixedly connected to the top of the frame plate (21), a sliding rod (19) is fixedly connected to the top of the electric push rod (20), and the right side of the sliding rod (19) is fixedly connected to the left side of the fixing seat (2).

4. A head fixing device according to claim 3, characterized in that: The left side of the inner cavity of the support shell (1) is fixedly connected with a slide rail (18), and the left side of the slide rod (19) is slidably connected in the inner cavity of the slide rail (18).

5. A head fixing device according to claim 1, characterized in that: A sliding groove is provided on the side of the support shell (1), and the right side of the fixing seat (2) is slidably connected to the inner cavity of the sliding groove.

6. A head fixing device according to claim 1, characterized in that: A spring (13) is fixedly connected to the bottom of the push plate (8), and a second bearing is provided at the connection between one side of the second bolt (14) and the limiting circular pad (15).

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