A nerve dissector with guiding function
By inserting Kirschner wires into the nerve dissector through a channel to fix the nerve root, the problem of insufficient stability of traditional nerve dissectors in spinal endoscopic surgery is solved, achieving stable traction and clear vision, and reducing surgical risks and operational difficulty.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHANGZHOU NO 2 PEOPLES HOSPITAL
- Filing Date
- 2026-05-19
- Publication Date
- 2026-07-10
AI Technical Summary
Traditional nerve strippers are difficult to maintain a stable position after nerve roots are retracted during spinal endoscopic surgery, which leads to obstruction of the surgical field, increases the difficulty and risk of the operation, and the continuous hand-held operation by the surgeon takes up space and affects the accuracy.
Design a nerve dissector with a guiding function, with an internal channel for installing Kirschner wires. After the nerve root is pulled by the hook head, the Kirschner wire is inserted for fixation. The Kirschner wire maintains the stability of the nerve root after the dissector is removed, preventing rebound.
It frees up the assistant from continuous pulling manpower, eliminates instrument obstruction, provides a spacious, clear and safe surgical operating space, and reduces surgical risks and operational difficulty.
Smart Images
Figure CN122350784A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of medical device technology, specifically to a nerve dissector with a guiding function. Background Technology
[0002] Currently, nerve dissectors or nerve retractors are commonly used in spinal endoscopic surgery to retract nerve roots. However, in practice, the lateral recess area is narrow and anatomically complex, often causing nerve roots to become trapped within it. Traditional nerve dissectors, due to design limitations, struggle to maintain a stable position after nerve root retraction. Once the surgeon releases the dissector, or during instrument changes, the nerve root easily springs back to its original narrow position due to loss of traction, obstructing the surgical field again and increasing the difficulty and risk of the procedure.
[0003] Secondly, in the existing technology, in order to continuously retract the nerve root, the surgeon usually needs to hold the nerve retractor continuously. This not only occupies the surgeon's operating space, but may also cause surgeon fatigue and affect the accuracy of the surgery.
[0004] Therefore, it is necessary to provide a neural dissector with a guiding function to solve the above problems. Summary of the Invention
[0005] In view of the above-mentioned problems in the prior art, the purpose of the present invention is to provide a nerve dissector with guiding function to solve the problems mentioned in the background art.
[0006] The technical solution adopted by the present invention to solve its technical problem is: a nerve dissector with guiding function, including a dissector body, wherein a channel concentric with the dissector body is opened in the center of the dissector body, a Kirschner wire is installed in the channel, one end of the channel is the needle inlet end and the other end is the needle outlet end; One end of the peeler body is a hook portion, the hook portion has a pulling portion, the needle outlet end is located at the lower end of the pulling portion, and the needle inlet end is located at the end of the peeler body away from the hook portion.
[0007] Furthermore, the outermost end of the hook portion is a hook head, and the height of the hook head is higher than the axis of the channel.
[0008] Furthermore, the perpendicular line from the outer end face of the hook head forms an angle α with the axis of the channel, and the degree of the angle α is 10-45 degrees.
[0009] Furthermore, the hook portion also has a transition portion, the pulling portion is located between the hook head and the transition portion, the upper and lower ends of the hook head and the transition portion are both planes, and the upper and lower ends of the pulling portion are both arc-shaped surfaces.
[0010] Furthermore, the distance between the upper and lower ends of the transition section gradually increases from front to back.
[0011] Furthermore, the two sides of the hook portion are flat, and the width between the two flat surfaces is smaller than the diameter of the peeler body.
[0012] Furthermore, the peeler body also has a middle portion and a knurled portion, with the middle portion located between the hook portion and the knurled portion.
[0013] Furthermore, the length of the knurled portion is half the length of the entire peeler body.
[0014] Furthermore, the channel extends through the hook portion, the middle portion, and the knurled portion, with the needle insertion end located on the knurled portion.
[0015] The beneficial effects of this invention are as follows: This invention provides a nerve dissector with a guiding function. The dissector has a channel for Kirschner wires to pass through within its body. When the nerve root is pulled in the traction section, the Kirschner wire is inserted and fixed from the back of the traction section. After the dissector body is removed, the nerve root is held in place by the Kirschner wire and cannot rebound. This frees up the assistant from the manpower required for continuous traction and eliminates the obstruction of the surgical field by the instrument. It provides a wide, clear and safe surgical operation space for subsequent procedures. This avoids the situation where traditional nerve dissectors, due to design limitations, cannot maintain a stable position after the nerve root is pulled. Once the surgeon releases the nerve dissector or during instrument changes, the nerve root is prone to rebound to its original narrow position due to loss of traction, causing the surgical field to be obstructed again, increasing the difficulty and risk of the surgical operation.
[0016] In addition to the objectives, features, and advantages described above, the present invention has other objectives, features, and advantages. The invention will now be described in further detail with reference to the figures. Attached Figure Description
[0017] The accompanying drawings, which form part of this specification, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a front perspective view of the present invention; Figure 2 This is a three-dimensional schematic diagram of the back of the present invention; Figure 3 This is a schematic diagram of the needle outlet of the present invention; Figure 4 This is a schematic diagram of the needle insertion end of the present invention; Figure 5 This is a top view of the present invention; Figure 6 This is a cross-sectional schematic diagram of the present invention; Figure 7 For the present invention Figure 6 Enlarged diagram of area A in the middle; The following are the labeling elements in the figure: 1. Peeling body; 101. Channel; 102. Needle inlet end; 103. Needle outlet end; 11. Hook part; 111. Hook head; 112. Pulling part; 113. Transition part; 12. Middle part; 13. Knurled part; a. Angle. Detailed Implementation
[0018] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0019] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.
[0020] like Figure 1-7 As shown, the present invention provides a technical solution: a nerve dissector with guiding function, including a dissector body 1, a channel 101 concentric with the dissector body 1 is opened in the center of the dissector body 1, a Kirschner wire is installed in the channel 101, one end of the channel 101 is the needle inlet 102, and the other end is the needle outlet 103. One end of the peeler body 1 is a hook portion 11, the hook portion 11 has a pulling portion 112, the needle outlet end 103 is located at the lower end of the pulling portion 112, and the needle inlet end 102 is located at the end of the peeler body 1 away from the hook portion 11.
[0021] The outermost end of the hook part 11 is the hook head 111, and the height of the hook head 111 is higher than the axis of the channel 101.
[0022] The perpendicular line from the outer end face of the hook head 111 forms an angle α with the axis of the channel 101, and the degree of angle α is 10-45 degrees.
[0023] The hook part 11 also has a transition part 113, and the pulling part 112 is located between the hook head 111 and the transition part 113. The upper and lower ends of the hook head 111 and the transition part 113 are both flat, and the upper and lower ends of the pulling part 112 are both arc-shaped surfaces.
[0024] The distance between the upper and lower ends of the transition section 113 gradually increases from front to back. The front end is the connection point with the pulling section 112.
[0025] The two sides of the hook part 11 are flat, and the width between the two flat surfaces is smaller than the diameter of the peeler body 1.
[0026] The peeler body 1 also has a middle part 12 and a knurled part 13, with the middle part 12 located between the hook part 11 and the knurled part 13.
[0027] The length of the knurled part 13 is half the length of the entire peeler body 1.
[0028] Channel 101 runs through the hook portion 11, the middle portion 12, and the knurled portion 13, with the needle insertion end 102 located on the knurled portion 13. The knurled portion 13 increases the friction between the operator's hand and the hand during operation, preventing slippage.
[0029] In one embodiment, how is this nerve dissector used?
[0030] Specifically, after establishing the working pathway and exposing the surgical area, the surgeon first inserts the dissector body 1 through the operating channel and uses the hook head 111 to perform fine blunt dissection around the nerve root. After confirming that the nerve root has no dense adhesions and good mobility, the surgeon selects the dissector body 1 with a matching angle a and gently applies its upper end surface of the traction part 112, that is, the wide contact surface, to the nerve root and pull it smoothly to the inside to fully expose the deep lesion area. Subsequently, the surgeon maintains the traction state and inserts a Kirschner wire with a tip smaller than the diameter of channel 101 towards the insertion end 102, slowly along channel 101. Under direct endoscopic visualization, the wire passes under the nerve root and penetrates into the intervertebral disc to the predetermined depth. The tip of the wire leaves channel 101 from the exit end 103. At this time, the Kirschner wire is located on the back of the traction part 112, and a stable physical barrier to avoid the nerve root is constructed using the Kirschner wire. After the Kirschner wires are fixed, the surgeon removes the neuropathic dissector body 1. At this time, the nerve root, supported by the Kirschner wires, remains in an avoidance state without rebounding. This not only completely frees up the assistant from the manpower required for continuous traction, but also eliminates the obstruction of the surgical field by the instruments, providing a wide, clear and safe surgical operation space for subsequent procedures.
[0031] In summary, this dissector, by having a channel 101 within the dissector body 1 for the passage of Kirschner wires, allows the Kirschner wires to be inserted and fixed from the back of the traction section 112 when the nerve root is pulled by the traction section 112. After the dissector body 1 is removed, the nerve root is held in place by the Kirschner wires and cannot rebound. This frees up the assistant from the manpower required for continuous traction and eliminates the obstruction of the surgical field by the instruments, providing a wide, clear, and safe surgical operating space for subsequent procedures. It avoids the situation where traditional nerve dissectors, due to design limitations, cannot maintain a stable position after the nerve root is pulled. Once the surgeon releases the nerve dissector or during instrument changes, the nerve root is prone to rebound to its original narrow position due to loss of traction, causing the surgical field to be obstructed again, increasing the difficulty and risk of the surgical operation.
[0032] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.
Claims
1. A nerve dissector with guiding function, characterized in that: It includes a peeling sub-body (1), the center of which has a channel (101) concentric with the peeling sub-body (1), a Kirschner wire is installed in the channel (101), one end of the channel (101) is the needle inlet end (102), and the other end is the needle outlet end (103). One end of the peeler body (1) is a hook part (11), the hook part (11) has a pulling part (112), the needle outlet end (103) is located at the lower end of the pulling part (112), and the needle inlet end (102) is located at the end of the peeler body (1) away from the hook part (11).
2. The nerve dissector with guiding function according to claim 1, characterized in that: The outermost end of the hook part (11) is the hook head (111), and the height of the hook head (111) is higher than the axis of the channel (101).
3. The nerve dissector with guiding function according to claim 2, characterized in that: The perpendicular line from the outer end face of the hook head (111) forms an angle (a) with the axis of the channel (101), and the degree of the angle (a) is 10-45 degrees.
4. The nerve dissector with guiding function according to claim 3, characterized in that: The hook part (11) also has a transition part (113), and the pulling part (112) is located between the hook head (111) and the transition part (113). The upper and lower ends of the hook head (111) and the transition part (113) are both planes, and the upper and lower ends of the pulling part (112) are both arc surfaces.
5. The nerve dissector with guiding function according to claim 4, characterized in that: The distance between the upper and lower ends of the transition section (113) gradually increases from front to back.
6. The nerve dissector with guiding function according to claim 1, characterized in that: The two sides of the hook part (11) are flat, and the width between the two flat surfaces is smaller than the diameter of the peeling sub-body (1).
7. The nerve dissector with guiding function according to claim 6, characterized in that: The peeler body (1) also has a middle part (12) and a knurled part (13), the middle part (12) being located between the hook part (11) and the knurled part (13).
8. The nerve dissector with guiding function according to claim 7, characterized in that: The length of the knurled portion (13) is half the length of the entire peeler body (1).
9. The nerve dissector with guiding function according to claim 8, characterized in that: The channel (101) passes through the hook portion (11), the middle portion (12) and the knurled portion (13), and the needle insertion end (102) is located on the knurled portion (13).