Nerve tissue separator for spine UBE minimally invasive surgery

Abstract

The invention discloses a nerve tissue separator for spine UBE minimally invasive surgery, and particularly relates to the field of UBE nerve protection.The nerve tissue separator comprises a first forceps body and a second forceps body, a movable operating handle is arranged at one end of the first forceps body, an elastic positioning assembly is arranged between the movable operating handle and the first forceps body, the upper middle portion of the movable operating handle is hinged to the first forceps body, and the lower middle portion of the movable operating handle is hinged to the second forceps body; the top end of the movable operating handle is in hinged transmission with the second clamp body. According to the invention, through the alignment arrangement of the fixed forceps head and the separation knife, the movable operation handle is pressed to extrude the elastic positioning assembly to deform, and the separation knife cuts the tissue adhesion part, so that the separation of nerves and tumor tissues or surrounding tissues can be completed, and the width of the protection carrying seat is greater than that of the opening of the protection groove; the fixed forceps head stops the integral part composed of the protective carrying seat and the separating knife from continuing to advance, so that the situation that the distance between the movable operating handle and the fixed handle is excessively shortened, and consequently the cutting edge of the separating knife is damaged is effectively prevented, the endoscopic separation of the nerve adhesion tissue becomes possible, and the operation is more convenient and safer.

Description

Technical Field

[0001] The present invention relates to the technical field of UBE nerve protection, and more particularly to a nerve tissue separator for minimally invasive spinal UBE surgery. Background Art

[0002] The UBE technique (Unilateral Biportal Endoscopy Technique) is a technique suitable for degenerative lesions of the cervical, thoracic, and lumbar spine. Unlike the single channel of perforaminal endoscopic surgery, this technique usually establishes two channels, one for observation and the other for instrument operation. The observation channel generally uses a 0° or 30° UBE endoscope, and the operation channel uses UBE-specific instruments, such as UBE curettes, burrs (UBE endoscopic grinding heads), UBE endoscopic planers, UBE endoscopic ablation electrodes, UBE lamina rongeurs, UBE nucleus pulposus forceps, and UBE nerve retractors. It is gaining increasing attention because it combines the magnified field of view of an endoscope with the flexible operation of open surgery, can be used with conventional perforaminal endoscopic instruments and spinal open surgery instruments, has minimal soft tissue damage, and requires less fluoroscopy.

[0003] During surgery, an endoscope enters the human body through the observation channel, and operating instruments are inserted into the human body through the operating channel. The operator uses the operating instruments to perform operations such as grinding and ablation on the surgical site under the field of view provided by the endoscope. In clinical surgery, nerve tissue is often tightly adhered to surrounding tissue, scar tissue, or tumor tissue. However, there is currently a lack of effective nerve separation devices in the field of UBE instruments. In particular, when nerves are severely adhered to tumor tissue or surrounding tissue, the nerve tissue cannot be separated effectively, quickly, and safely. During minimally invasive spinal UBE surgery, separating nerves from surrounding adhered tissue, especially tumor tissue, is very difficult, often leading to dural sac tears and nerve damage. In particular, when using UBE technology for endoscopic resection of neurogenic tumors, nerve damage often occurs due to the lack of tissue instruments for nerve separation. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides a nerve tissue separator for spinal UBE minimally invasive surgery. The technical problem to be solved by the present invention is: how to solve the problem that the nerves cannot be effectively separated from the tumor tissue or surrounding tissue when the nerves are severely adhered to each other during the existing UBE minimally invasive surgery.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a nerve tissue separator for minimally invasive spinal UBE surgery, comprising a first clamp body and a second clamp body, wherein a movable operating handle is provided at one end of the first clamp body, an elastic positioning assembly is provided between the movable operating handle and the first clamp body, the upper middle portion of the movable operating handle is hingedly connected to the first clamp body, and the top end of the movable operating handle is hingedly connected to the second clamp body for transmission;

[0006] The first clamp body includes a fixed clamp rod, at the end of which a fixed handle is fixedly provided, and the fixed handle forms an angle of 120° - 140° with the fixed clamp rod. At the center of the top of the fixed clamp rod, an adjustment sliding groove is provided. On the outer side of the end of the fixed clamp rod away from the fixed handle, a first positioning sliding groove is provided. At the head end of the fixed clamp rod, a fixed clamp head is fixedly provided, and the fixed clamp head is vertically arranged at an angle of 90° with the fixed clamp rod. A protection groove is provided on the fixed clamp head.

[0007] The second clamp body includes a movable clamp rod. At the center of the bottom of the movable clamp rod, a positioning convex strip is fixedly provided. The positioning convex strip is arranged in alignment with the adjustment sliding groove. On both sides of the end of the positioning convex strip, first positioning convex blocks are fixedly provided. At the bottom of both sides of the head end of the movable clamp rod, second positioning convex blocks are fixedly provided. At the head of the movable clamp rod, an outward convex separating knife is fixedly provided.

[0008] In a preferred embodiment, on both inner walls of the end of the adjustment sliding groove away from the fixed clamp head, second positioning sliding grooves are provided. The first positioning convex blocks are arranged in alignment with and slidably connected to the second positioning sliding grooves, and longitudinally limit the lateral movement of the first clamp body and the second clamp body at the tail end to prevent the first clamp body and the second clamp body from separating.

[0009] In a preferred embodiment, the second positioning convex blocks are arranged in alignment with and slidably connected to the first positioning sliding grooves, and longitudinally limit the lateral movement of the first clamp body and the second clamp body at the head end to prevent the first clamp body and the second clamp body from separating.

[0010] In a preferred embodiment, the cross-section of the fixed clamp head is in the shape of a regular trapezoid, and the cross-section of the protection groove is set as a regular trapezoid with a large opening.

[0011] In a preferred embodiment, a protection carrier seat is fixedly provided on the side of the separating knife body. The separating knife is arranged in alignment with the protection groove. The depth of the protection groove is greater than the width of the separating knife, and the opening width of the protection groove is less than the width of the protection carrier seat.

[0012] In a preferred embodiment, the elastic positioning component includes two arc-shaped spring pieces distributed in a "V" shape, and one end of the two arc-shaped spring pieces is fixedly connected, and the other ends of the two arc-shaped spring pieces are respectively fixed to the inner walls of the fixed handle and the movable operating handle.

[0013] In a preferred embodiment, the movable operating handle is set in a bent arc shape, and a placement convex block is fixedly provided on the outer wall of the fixed handle to limit slipping when the user holds it, so as to ensure the operation stability when holding.

[0014] In a preferred embodiment, the first jaw body and the second jaw body have comparable widths, and the first jaw body, the second jaw body, the movable operating handle, and the elastic positioning component are all made of medical stainless steel material.

[0015] Technical effects and advantages of the present invention:

[0016] 1. In the present invention, through the alignment setting of the fixed jaw head and the separating knife, the ends of the first jaw body and the second jaw body enter the lesion site through the instrument operation channel. Pressing the movable operating handle squeezes the elastic positioning component to deform, shortening the distance between the fixed jaw head and the separating knife. The separating knife cuts the tissue adhesion, completing the separation of the nerve from the tumor tissue or the surrounding tissue. The width of the protective carrier is greater than the width of the opening of the protective groove. The fixed jaw head blocks the overall component composed of the protective carrier and the separating knife from moving forward, effectively preventing the distance between the movable operating handle and the fixed handle from being overly shortened and damaging the cutting edge of the separating knife, making it possible to separate the nerve adhesion tissue under the microscope, and being more convenient and safe;

[0017] 2. In the present invention, by providing the first positioning convex block and the second positioning convex block, the second positioning convex block slides horizontally in the first positioning chute, while the first positioning convex block slides horizontally in the second positioning chute, thereby limiting the longitudinal position of the first jaw body and the second jaw body, preventing the positioning convex strip from disengaging from the adjustment chute, maintaining the stability of the horizontal movement, ensuring the smooth operation of the cutting work, guaranteeing the accuracy of the separation operation, avoiding damage to the nerve at the lesion site caused by insufficient operation accuracy, further restricting the over-pressing of the movable operating handle and damaging the cutting edge of the separating knife, and ensuring its service life and use effect. Description of the drawings

[0018] Figure 1 is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 is a schematic diagram of the first jaw body structure of the present invention.

[0020] Figure 3 is of the present invention Figure 2 enlarged view of the structure of part A.

[0021] Figure 4 is of the present invention Figure 2 enlarged view of the structure of part B.

[0022] Figure 5 is a schematic diagram of the second jaw body structure of the present invention.

[0023] Reference numerals are: 1 first jaw body, 2 second jaw body, 3 movable operating handle, 4 elastic positioning component;

[0024] 11 Fixed clamp rod, 12 fixed handle, 13 adjustment chute, 14 first positioning chute, 15 fixed clamp head, 16 protective groove, 17 second positioning chute;

[0025] 21 Movable clamp rod, 22 positioning rib, 23 first positioning bump, 24 second positioning bump, 25 protective carrier, 26 separating knife. Specific implementation mode

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] Embodiment 1:

[0028] The present invention provides a nerve tissue separator for minimally invasive spine UBE surgery, including a first clamp body 1 and a second clamp body 2. One end of the first clamp body 1 is provided with a movable operation handle 3. An elastic positioning component 4 is arranged between the movable operation handle 3 and the first clamp body 1. The elastic positioning component 4 includes two arc-shaped spring pieces distributed in a "V" shape, and one end of the two arc-shaped spring pieces is fixedly connected. The other ends of the two arc-shaped spring pieces are respectively fixed to the inner walls of the fixed handle 12 and the movable operation handle 3. The middle upper part of the movable operation handle 3 is hinged to the first clamp body 1. A through hole is longitudinally opened at the tail end of the first clamp body 1, and the top end of the movable operation handle 3 passes through the first clamp body 1 through the through hole and is hinged to the second clamp body 2 for transmission. The movable operation handle 3 is set in a bent arc shape, and a placement bump is fixedly arranged on the outer wall of the fixed handle 12 to play a role in limiting and anti-slip when the user holds it, so as to ensure the operation stability when holding. The widths of the first clamp body 1 and the second clamp body 2 are equivalent, and the first clamp body 1, the second clamp body 2, the movable operation handle 3 and the elastic positioning component 4 are all made of medical stainless steel materials;

[0029] The first clamp body 1 includes a fixed clamp rod 11. A fixed handle 12 is fixedly arranged at the end of the fixed clamp rod 11, and the fixed handle 12 forms an angle of 120° - 140° with the fixed clamp rod 11. A fixed clamp head 15 is fixedly arranged at the head end of the fixed clamp rod 11. The cross-section of the fixed clamp head 15 is a regular trapezoid, and the cross-section shape of the protective groove 16 is a regular trapezoid with a large opening. The fixed clamp head 15 is vertically arranged at an angle of 90° with the fixed clamp rod 11, and the sum of the thickness of the fixed clamp rod 11 and the length of the fixed clamp head 15 is 7 - 9 mm. A protective groove 16 is opened on the fixed clamp head 15;

[0030] The second clamping body 2 includes a movable clamping rod 21. An outward convex separating knife 26 is fixedly provided at the head of the movable clamping rod 21. A protective carrier seat 25 is fixedly provided on the side of the knife body of the separating knife 26. The separating knife 26 is arranged opposite to the protective groove 16. The depth of the protective groove 16 is greater than the width of the separating knife 26, and the opening width of the protective groove 16 is smaller than the width of the protective carrier seat 25;

[0031] Specifically, during the minimally invasive spinal UBE surgery, when severe adhesion occurs between the nerve and the tumor tissue or surrounding tissues, under the observation of the UBE endoscope in the observation channel, the ends of the first clamping body 1 and the second clamping body 2 of this device enter the lesion point through the instrument operation channel. The point to be separated (the adhesion between the nerve and the tumor tissue or surrounding tissues) is placed between the fixed clamping head 15 and the separating knife 26. Surgical operations are performed by holding the fixed handle 12 and the movable operating handle 3 (the specific operation method is similar to the operation method of a drag forceps). Pressing the movable operating handle 3 squeezes the elastic positioning component 4 to deform. Among them, the upper middle part of the movable operating handle 3 rotates with the fixed clamping rod 11, so that the position of the top end of the movable operating handle 3 changes outwards, thereby driving the hinged rotation between the top end of the movable operating handle 3 and the end of the movable clamping rod 21, causing the overall lateral movement of the second clamping body 2, shortening the distance between the fixed clamping head 15 and the separating knife 26. The separating knife 26 cuts the tissue adhesion part to complete the separation of the nerve and the tumor tissue or surrounding tissues. The separating knife 26 continues to move forward and completely enters the inside of the protective groove 16. Since the width of the protective carrier seat 25 is greater than the opening width of the protective groove 16, the fixed clamping head 15 blocks the overall component composed of the protective carrier seat 25 and the separating knife 26 from continuing to move forward, effectively preventing the distance between the movable operating handle 3 and the fixed handle 12 from being overly shortened and damaging the blade of the separating knife 26, and maintaining its sharpness. When entering through the instrument operation channel once, the lesion point to be operated is cut. After the single cutting operation is completed, the pressure on the movable operating handle 3 is loosened. Under the action of the resilience of the elastic positioning component 4, the second clamping body 2 is driven to reset, completing the restoration of the initial positions of the fixed clamping head 15 and the separating knife 2,6, preparing for the next operation;

[0032] Embodiment 2:

[0033] Based on the first clamping body 1 and the second clamping body 2 proposed in Embodiment 1, the present invention provides a further technical solution. A positioning convex strip 22 is fixedly provided at the center of the bottom of the movable clamping rod 21. The positioning convex strip 22 is arranged opposite to the adjustment sliding groove 13. First positioning convex blocks 23 are fixedly provided on both sides of the end of the positioning convex strip 22. Second positioning convex blocks 24 are fixedly provided at the bottom of both sides of the head end of the movable clamping rod 21;

[0034] At the center of the top of the fixed pliers rod 11, an adjustment sliding groove 13 is provided, and a first positioning sliding groove 14 is provided on the outer side of one end of the fixed pliers rod 11 away from the fixed handle 12; on both inner walls of both sides of one end of the adjustment sliding groove 13 away from the fixed pliers head 15, second positioning sliding grooves 17 are provided. The first positioning convex block 23 is arranged in alignment with the second positioning sliding groove 17 and is slidably connected, and longitudinally limits the lateral movement of the first pliers body 1 and the second pliers body 2 at the tail end, avoiding the separation of the first pliers body 1 and the second pliers body 2; the second positioning convex block 24 is arranged in alignment with the first positioning sliding groove 14 and is slidably connected, and longitudinally limits the lateral movement of the first pliers body 1 and the second pliers body 2 at the head end, avoiding the separation of the first pliers body 1 and the second pliers body 2.

[0035] The specific implementation manner is as follows: Through the operation between the movable operating handle 3 and the fixed handle 12, the second pliers body 2 is driven to move along the first pliers body 1. During this period, the positioning rib 22 moves in the adjustment sliding groove 13. During this process, the second positioning convex block 24 slides laterally in the first positioning sliding groove 14, and the first positioning convex block 23 slides laterally in the second positioning sliding groove 17, so as to limit the longitudinal position of the first pliers body 1 and the second pliers body 2, prevent the positioning rib 22 from separating from the adjustment sliding groove 13, maintain the stability of the lateral movement, and thus ensure the smooth operation of the cutting work, so as to ensure the accuracy of the separation operation and avoid damage to the nerves at the lesion site caused by insufficient operation accuracy;

[0036] In addition, the limitation of the movement position of the positioning rib 22 by the adjustment sliding groove 13 and the first positioning convex block 23 by the second positioning sliding groove 17 can further limit the excessive pressing of the movable operating handle 3, which may cause damage to the blade of the separating knife 26, and ensure its service life and use effect.

[0037] Finally, several points should be noted: First, in the description of the present application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, which can be mechanical connection or electrical connection, or the communication inside two components, and can be directly connected. "Up", "down", "left", "right", etc. are only used to represent the relative position relationship. When the absolute position of the described object changes, the relative position relationship may change;

[0038] Second: In the attached drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments of the present invention are involved. Other structures can refer to the general design. Without conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0039] Finally: The above description is only the preferred embodiment of the present invention and is not used to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A nerve tissue separator for minimally invasive spinal UBE surgery, comprising a first clamp body (1) and a second clamp body (2). One end of the first clamp body (1) is provided with a movable operating handle (3), and an elastic positioning component (4) is arranged between the movable operating handle (3) and the first clamp body (1). It is characterized in that: The upper middle part of the movable operating handle (3) is hinged to the first pliers body (1), and the top end of the movable operating handle (3) is hinged and driven to the second pliers body (2); The first pliers body (1) includes a fixed pliers rod (11). At the end of the fixed pliers rod (11), a fixed handle (12) is fixedly provided. The fixed handle (12) and the fixed pliers rod (11) form an included angle of 120° - 140°. At the center of the top of the fixed pliers rod (11), an adjustment sliding groove (13) is provided. On the outer side of the end of the fixed pliers rod (11) away from the fixed handle (12), a first positioning sliding groove (14) is provided. At the head end of the fixed pliers rod (11), a fixed pliers head (15) is fixedly provided. The fixed pliers head (15) and the fixed pliers rod (11) are vertically arranged at a 90° angle. A protective groove (16) is provided on the fixed pliers head (15); The second pliers body (2) includes a movable pliers rod (21). At the center of the bottom of the movable pliers rod (21), a positioning convex strip (22) is fixedly provided. The positioning convex strip (22) is arranged in alignment with the adjustment sliding groove (13). On both sides of the end of the positioning convex strip (22), first positioning convex blocks (23) are fixedly provided. At the bottom of both sides of the head end of the movable pliers rod (21), second positioning convex blocks (24) are fixedly provided. At the head of the movable pliers rod (21), an outward convex separating knife (26) is fixedly provided.

2. The nerve tissue separator for spinal UBE minimally invasive surgery according to claim 1, characterized in that: On both inner walls of one end of the adjustment sliding groove (13) away from the fixed pliers head (15), second positioning sliding grooves (17) are provided. The first positioning convex blocks (23) are arranged in alignment with the second positioning sliding grooves (17) and are slidably connected. At the tail end, longitudinal limit is performed on the lateral movement of the first pliers body (1) and the second pliers body (2) to avoid the separation of the first pliers body (1) and the second pliers body (2).

3. A nerve tissue separator for minimally invasive spinal UBE surgery according to claim 1, characterized in that: The second positioning convex blocks (24) are arranged in alignment with the first positioning sliding groove (14) and are slidably connected. At the head end, longitudinal limit is performed on the lateral movement of the first pliers body (1) and the second pliers body (2) to avoid the separation of the first pliers body (1) and the second pliers body (2).

4. A nerve tissue separator for spinal UBE minimally invasive surgery according to claim 1, characterized in that: The cross-section of the fixed pliers head (15) is a regular trapezoid, and the cross-section shape of the protective groove (16) is a regular trapezoid with a large opening.

5. A nerve tissue separator for spinal UBE minimally invasive surgery according to claim 4, characterized in that: On the side of the blade body of the separating knife (26), a protective carrier seat (25) is fixedly provided. The separating knife (26) is arranged in alignment with the protective groove (16). The depth of the protective groove (16) is greater than the width of the separating knife (26). The opening width of the protective groove (16) is smaller than the width of the protective carrier seat (25).

6. The nerve tissue separator for spinal UBE minimally invasive surgery according to claim 1, characterized in that: The elastic positioning component (4) includes two arc-shaped spring pieces distributed in a "V" shape. One end of the two arc-shaped spring pieces is fixedly connected, and the other ends of the two arc-shaped spring pieces are respectively fixed to the inner walls of the fixed handle (12) and the movable operating handle (3).

7. A nerve tissue separator for minimally invasive spinal UBE surgery according to claim 6, characterized in that: The movable operating handle (3) is set in a bent arc shape. On the outer wall of the fixed handle (12), a placing convex block is fixedly provided, which plays a role in limiting and anti-slip when the user holds it, so as to ensure the operation stability when holding.

8. A nerve tissue separator for minimally invasive spinal UBE surgery according to claim 1, characterized in that: The widths of the first pliers body (1) and the second pliers body (2) are equivalent. The first pliers body (1), the second pliers body (2), the movable operating handle (3) and the elastic positioning component (4) are all made of medical stainless steel materials.

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