Visual nerve retractor

Abstract

The utility model discloses a visual nerve drag hook which comprises a handle (1), a hook body (2) is fixedly arranged at the head end of the handle (1), the hook body (2) is made of transparent materials, a camera (4) is installed in the hook body (2) in a rotating mode, a driving assembly is arranged in the handle (1), and an angle adjusting knob (6) is arranged at the tail end of the handle (1). The angle adjusting knob (6) and the camera (4) are both connected with the driving assembly. According to the utility model, the image of the traction part can be acquired through the built-in camera and displayed through the display, so that damage to nerves is avoided.

Description

Technical Field

[0001] The utility model relates to a nerve retractor, in particular to a visual nerve retractor, and belongs to the technical field of medical equipment. Background Art

[0002] During spinal surgery, nerve retractors are essential surgical aids. They are typically used to retract nerve roots and the dura mater to expose the surgical site and provide a better surgical field of view. Therefore, the retraction of tissue by nerve retractors is crucial during spinal surgery and requires very careful control throughout the procedure. Existing nerve retractors, however, are unable to observe the distribution of nerve roots around the spine during retraction. Furthermore, because the nerve roots around the spine are located deep within the spine, improper manipulation, such as the retraction position, can easily damage the nerve roots, leading to very serious consequences. Utility Model Content

[0003] The purpose of the utility model is to provide a visual nerve retractor to solve the technical problems in the prior art. The utility model can collect images of the retracted part through a built-in camera and display them through a display to avoid damage to the nerve.

[0004] The utility model provides a visual nerve retractor, comprising a handle, a hook body fixedly provided at the head end of the handle, the hook body being made of a transparent material, a camera rotatably installed in the hook body, a drive assembly being provided in the handle, an angle adjustment knob being provided at the tail end of the handle, the angle adjustment knob and the camera being connected to the drive assembly.

[0005] In the aforementioned visual nerve retractor, preferably, the handle consists of a conical segment and a cylindrical segment, one end of the cylindrical segment is fixedly connected to the end of the conical segment with a larger diameter, the end of the conical segment with a smaller diameter is fixedly connected to the hook body, and the other end of the cylindrical segment is formed with a connecting tube.

[0006] In the aforementioned visual nerve retractor, preferably, a mounting seat is formed at the end of the truncated cone segment, the hook body is fixedly connected to the mounting seat, the hook body is a cylindrical tube, and the end of the hook body away from the mounting seat is a closed end.

[0007] A first bearing is installed in the hook body, and a second bearing is installed in the mounting seat. The camera is rotatably installed in the hook body and the mounting seat through the first bearing and the second bearing, and the lens of the camera is located on the side wall.

[0008] The driving assembly includes a first umbrella-shaped tooth, a second umbrella-shaped tooth and a driving tube. The first umbrella-shaped tooth is fixed to one end of the camera located in the mounting seat. A third bearing and a fourth bearing are provided in the handle. The driving tube is rotatably mounted in the handle through the third bearing and the fourth bearing. The second umbrella-shaped tooth is fixed to one end of the driving tube, and the second umbrella-shaped tooth is engaged with the first umbrella-shaped tooth. The other end of the driving tube is fixedly connected to the angle adjustment knob.

[0009] A limiting ring groove is provided on the outer wall of the connecting tube, the angle adjustment knob is sleeved on the connecting tube, a countersunk hole is provided on the side wall of the angle adjustment knob, a limiting screw is threadedly connected to the countersunk hole, and one end of the limiting screw extends into the limiting ring groove.

[0010] The data line of the camera passes through the first umbrella-shaped tooth, the second umbrella-shaped tooth and the driving tube in sequence.

[0011] Compared to existing technologies, the present invention includes a handle with a transparent hook fixed to its tip. A camera is rotatably mounted within the hook. A drive assembly is located within the handle, and an angle adjustment knob is located at the tail end of the handle. Both the angle adjustment knob and the camera are connected to the drive assembly. By installing a camera within the hook, the present invention can capture images of the nerves and dural sac surrounding the spine and display them on a monitor, allowing the surgeon to visualize the area being stretched in real time during surgery, thereby preventing damage to the nerve roots. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is an axonometric drawing of the present utility model;

[0013] Figure 2 It is a half-section view of the utility model;

[0014] Figure 3 yes Figure 2 A magnified view of part A;

[0015] Figure 4 yes Figure 2 Enlarged view of part B.

[0016] Explanation of the accompanying drawings: handle 1, hook body 2, mounting base 3, camera 4, angle adjustment knob 6, conical section 7, cylindrical section 8, connecting tube 9, first bearing 10, second bearing 11, first umbrella-shaped tooth 12, second umbrella-shaped tooth 13, drive tube 14, third bearing 15, fourth bearing 16, limiting ring groove 17, countersunk hole 18, limiting screw 19. DETAILED DESCRIPTION

[0017] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0018] The embodiment of the present utility model: Figures 1-4 As shown, a visual nerve retractor includes a handle 1, a hook body 2 is fixedly provided at the head end of the handle 1, the hook body 2 is made of transparent material, a camera 4 is rotatably installed in the hook body 2, a driving component is provided in the handle 1, and an angle adjustment knob 6 is provided at the tail end of the handle 1, and the angle adjustment knob 6 and the camera 4 are both connected to the driving component.

[0019] The hook body 2 is designed to be made of transparent material so that the camera 4 located inside it can capture images in different directions when rotating. The hook body 2 is preferably made of glass. Of course, other materials such as plastic can also be selected according to needs.

[0020] When the angle adjustment knob 6 is turned, the camera 4 is driven to rotate through the driving component, thereby changing the direction of the lens on the camera 4 to achieve 360° shooting.

[0021] In a specific embodiment, the handle 1 is composed of a conical section 7 and a cylindrical section 8, both of which are hollow structures. One end of the cylindrical section 8 is fixedly connected to the end of the conical section 7 with a larger diameter, and the end of the conical section 7 with a smaller diameter is fixedly connected to the hook body 2. A connecting tube 9 is formed at the other end of the cylindrical section 8.

[0022] The cylindrical section 8 facilitates gripping by the user, while the frustoconical section 7 allows the front end diameter of the handle 1 to be made smaller, making it easier for the front end of the handle 1 and the hook body 2 to hook the nerve root and the dural sac. Furthermore, the frustoconical section 7 ensures the overall structural strength of the handle 1, making it less susceptible to damage.

[0023] Furthermore, a mounting seat 3 is formed at the end of the truncated cone section 7, and the hook body 2 is fixedly connected to the mounting seat 3. The hook body 2 is a cylindrical tubular structure, and the end of the hook body 2 away from the mounting seat 3 is a closed end.

[0024] The hook body 2 and the mounting seat 3 can be fixed by bonding, threading or other methods. The hook body 2 and the mounting seat 3 have the same outer diameter and are coaxial.

[0025] Furthermore, a first bearing 10 is installed in the hook body 2, and a second bearing 11 is installed in the mounting seat 3. The outer shell of the camera 4 is a cylindrical structure. The camera 4 is rotatably installed in the hook body 2 and the mounting seat 3 through the first bearing 10 and the second bearing 11, and the lens of the camera 4 is located on its side wall.

[0026] By disposing the first bearing 10 and the second bearing 11 , the smoothness of the rotation of the camera 4 can be ensured, and the coaxiality of the camera 4, the hook body 2 and the mounting seat 3 can also be ensured.

[0027] Furthermore, the driving assembly includes a first umbrella-shaped tooth 12, a second umbrella-shaped tooth 13 and a driving tube 14. The first umbrella-shaped tooth 12 is fixed to one end of the camera 4 located in the mounting base 3. A third bearing 15 and a fourth bearing 16 are provided in the handle 1. The driving tube 14 is rotatably mounted in the handle 1 through the third bearing 15 and the fourth bearing 16. The second umbrella-shaped tooth 13 is fixed to one end of the driving tube 14, and the second umbrella-shaped tooth 13 is engaged with the first umbrella-shaped tooth 12. The other end of the driving tube 14 is fixedly connected to the angle adjustment knob 6.

[0028] The arrangement of the third bearing 15 and the fourth bearing 16 allows the drive tube 14 to rotate smoothly within the handle 1, and the drive tube 14 is coaxial with the handle 1. Turning the angle adjustment knob 6 rotates the drive tube 14, which in turn rotates the first umbrella-shaped teeth 12 via the second umbrella-shaped teeth 13 thereon, thereby rotating the camera 4.

[0029] Furthermore, a limiting ring groove 17 is provided on the outer wall of the connecting tube 9, and the angle adjustment knob 6 is sleeved on the connecting tube 9. A countersunk hole 18 is provided on the side wall of the angle adjustment knob 6. A limiting screw 19 is connected to the inner thread of the countersunk hole 18, and one end of the limiting screw 19 extends into the limiting ring groove 17.

[0030] The outer diameter of the connecting tube 9 is smaller than that of the cylindrical section 8. This creates a stop surface at the connection point between the connecting tube 9 and the cylindrical section 8. When the angle adjustment knob 6 abuts the stop surface, the countersunk hole 18 on the angle adjustment knob 6 aligns with the stop ring groove 17 on the connecting tube 9, facilitating the installation of a stop screw 19. The placement of the stop screw 19 ensures that the angle adjustment knob 6 can only rotate on the connecting tube 9 and cannot move axially.

[0031] Furthermore, the data cable of camera 4 sequentially passes through first umbrella-shaped teeth 12, second umbrella-shaped teeth 13, and drive tube 14. The diameter of the data cable of camera 4 is slightly smaller than the inner diameter of drive tube 14. This prevents the data cable from breaking when drive tube 14 and camera 4 rotate. The data cable of camera 4 is connected to the smart terminal via a connection terminal. The smart terminal is used to analyze the image captured by camera 4 and display it on a display. Both the smart terminal and the display are mature existing technologies and are not described in detail in this embodiment.

[0032] The working principle of the present utility model is as follows: when in use, the cylindrical section 8 of the hand grip 1 is held, and one end of the hook body 2 is inserted into the patient's body through the wound on the patient's body. The camera 4 is responsible for collecting images and sending the collected images to the smart terminal through the data cable. The smart terminal processes the image information and displays the picture through the display. The doctor can see the situation inside the patient's body through the display. If the angle of the camera 4 is not suitable and needs to be adjusted, the angle adjustment knob 6 is rotated. The angle adjustment knob 6 drives the driving tube 14 to rotate. The second umbrella-shaped teeth 13 at the end of the driving tube 14 drive the first umbrella-shaped teeth 12 at the lower end of the camera 4 to rotate, and the camera 4 rotates synchronously. Since the hook body 2 is made of transparent material, the camera 4 can collect images normally no matter what angle it is rotated to.

[0033] With the help of the display screen, the doctor can accurately hook the nerve root and the dura mater sac through the hook body 2 to prevent damage to the nerve root.

[0034] The above describes in detail the structure, features and effects of the present invention based on the embodiments shown in the drawings. The above is only a preferred embodiment of the present invention, but the scope of implementation of the present invention is not limited to what is shown in the drawings. Any changes made in accordance with the concept of the present invention, or modifications to equivalent embodiments with equivalent changes, which do not exceed the spirit covered by the description and drawings, should be within the scope of protection of the present invention.

Claims

1. A visual nerve retractor, comprising a handle (1), characterized in that: A hook body (2) is fixedly provided at the head end of the handle (1), the hook body (2) is made of a transparent material, a camera (4) is rotatably mounted in the hook body (2), a driving assembly is provided in the handle (1), an angle adjustment knob (6) is provided at the tail end of the handle (1), and both the angle adjustment knob (6) and the camera (4) are connected to the driving assembly.

2. The visual nerve retractor according to claim 1, characterized in that: The handle (1) is composed of a truncated cone section (7) and a cylindrical section (8), one end of the cylindrical section (8) is fixedly connected to the end of the truncated cone section (7) with a larger diameter, the end of the truncated cone section (7) with a smaller diameter is fixedly connected to the hook body (2), and the other end of the cylindrical section (8) is formed with a connecting tube (9).

3. The visual nerve retractor according to claim 2, characterized in that: A mounting seat (3) is formed at the end of the truncated cone section (7), and the hook body (2) is fixedly connected to the mounting seat (3). The hook body (2) is a cylindrical tube, and the end of the hook body (2) away from the mounting seat (3) is a closed end.

4. The visual nerve retractor according to claim 3, characterized in that: A first bearing (10) is installed in the hook body (2), a second bearing (11) is installed in the mounting seat (3), the camera (4) is rotatably installed in the hook body (2) and the mounting seat (3) via the first bearing (10) and the second bearing (11), and the lens of the camera (4) is located on the side wall thereof.

5. The visual nerve retractor according to claim 4, characterized in that: The driving assembly comprises a first umbrella-shaped tooth (12), a second umbrella-shaped tooth (13) and a driving tube (14); the first umbrella-shaped tooth (12) is fixed to one end of the camera (4) located in the mounting seat (3); a third bearing (15) and a fourth bearing (16) are provided in the handle (1); the driving tube (14) is rotatably mounted in the handle (1) via the third bearing (15) and the fourth bearing (16); the second umbrella-shaped tooth (13) is fixed to one end of the driving tube (14), and the second umbrella-shaped tooth (13) is meshed with the first umbrella-shaped tooth (12); and the other end of the driving tube (14) is fixedly connected to the angle adjustment knob (6).

6. The visual nerve retractor according to claim 5, characterized in that: A limiting ring groove (17) is provided on the outer wall of the connecting tube (9), the angle adjustment knob (6) is sleeved on the connecting tube (9), a countersunk hole (18) is provided on the side wall of the angle adjustment knob (6), a limiting screw (19) is connected to the inner thread of the countersunk hole (18), and one end of the limiting screw (19) extends into the limiting ring groove (17).

7. The visual nerve retractor according to claim 6, characterized in that: The data line of the camera (4) passes through the first umbrella-shaped tooth (12), the second umbrella-shaped tooth (13) and the driving tube (14) in sequence.

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