Nerve suturing device

Abstract

The utility model relates to the technical field of medical instruments, in particular to a nerve suturing device which comprises a main body and a lead assembly, the main body comprises an inner cylinder and an outer cylinder which is connected to the outer side of the inner cylinder and can rotate relative to the inner cylinder, the lead assembly is provided with a lead channel and a lead port, and the inner cylinder is provided with an inner cylinder first connecting end, an inner cylinder cavity and an inner cylinder lead groove. The outer cylinder is provided with an outer cylinder first connecting end and an outer cylinder lead groove, and after the outer cylinder rotates by a certain angle relative to the inner cylinder, the inner cylinder first connecting end is matched with the outer cylinder first connecting end, so that the outer cylinder is kept fixed relative to the inner cylinder. According to the utility model, by arranging the lead assembly, the suture material is led in more smoothly and accurately, the suture material enters an operation area in the cavity of the inner cylinder through the arranged channel, so that the puncture depth of the suture material is controlled more accurately, and medical staff can adjust the leading-in angle of the suture material by rotating the outer cylinder, so that the puncture depth of the suture material is controlled more accurately. Therefore, suturing requirements of different positions and directions are met, and stability and efficiency of an operation are effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a nerve suturing device. Background Art

[0002] In the medical field, nerve suturing is often used to connect and suture nerves. In the process of nerve connection and suturing, the two broken nerve bundles need to be pulled together first, and each nerve bundle in the two broken nerve bundles needs to be identified and aligned, and then each broken nerve needs to be sutured correspondingly using a suture needle. In the process of using a suture needle to suturing nerves, the two broken nerve bundles need to be kept in a pulled and aligned state.

[0003] In the prior art, in order to keep the two broken nerve bundles in a pulled and aligned state at all times, it is usually necessary to use surgical forceps or tweezers to clamp the two broken nerve bundles, and use the surgical forceps or tweezers to manually align the nerve bundles in the nerve bundles and keep them in a pulled and aligned state, so as to facilitate the doctor to sew up the broken nerves. However, in the prior art connection method of clamping the broken nerve bundles with surgical forceps or tweezers, since the nerve suturing operation often lasts for several hours, the existing method of manually clamping the nerve bundles with surgical forceps or tweezers requires the doctor to concentrate highly and maintain a fixed posture, which may easily cause the surgical forceps or tweezers to be unstable and the nerve bundles to be misaligned. In severe cases, it may even cause the nerves to break after suturing, resulting in the failure of the operation.

[0004] In view of the above situation, a nerve suturing connector such as that disclosed in Chinese patent document CN207785206U can keep the nerve bundle group in an aligned state, reduce the misalignment of the nerve bundle group, and reduce the situation of nerve breakage. However, in the operation environment of suturing nerves, the accuracy of the puncture position of the suture wire is very high. During the suturing process, medical staff need to predict the puncture depth for each operation to avoid the puncture depth being too shallow or too deep during the suturing process affecting the surgical results. A high degree of concentration will consume a lot of energy of medical staff, and during the suturing process, medical staff need to constantly adjust the suturing angle so that the suture wire can be sutured in the circumferential direction of the nerve bundle group, resulting in reduced stability and efficiency of the operation. Therefore, it is necessary to develop a nerve suturing device to further improve the stability and efficiency during the operation. Utility Model Content

[0005] In view of the technical problem mentioned above that medical staff need to predict the puncture depth each time during the suturing process to avoid the puncture depth being too shallow or too deep during the suturing process affecting the surgical results, and medical staff need to constantly adjust the suturing angle so that the suture wire can be sutured in the circumferential direction of the nerve bundle group, resulting in reduced stability and efficiency of the surgery, the technical solution adopted by the utility model to solve the technical problem is:

[0006] A nerve suturing device comprises a main body and a guide wire assembly, wherein the main body comprises an inner cylinder and an outer cylinder connected to the outside of the inner cylinder and rotatable relative to the inner cylinder, the guide wire assembly is provided with a guide wire channel which can be communicated with the inner cylinder, and a guide wire port for suture wire to enter the guide wire channel, the inner cylinder is provided with an inner cylinder first connecting end, an inner cylinder cavity, and an inner cylinder guide wire groove which is communicated with the inner cylinder cavity, the inner cylinder guide wire groove is used for allowing the guide wire assembly to extend into the inner cylinder cavity, the outer cylinder is provided with an outer cylinder first connecting end which cooperates with the inner cylinder first connecting end, and an outer cylinder guide wire groove which is communicated with the inner cylinder guide wire groove, after the outer cylinder rotates relative to the inner cylinder, the inner cylinder first connecting end and the outer cylinder first connecting end cooperate to keep the outer cylinder fixed relative to the inner cylinder.

[0007] Furthermore, in some embodiments of the present invention, the inner cylinder includes a first inner cylinder and a second inner cylinder that are detachably connected, and the first connecting end of the inner cylinder is arranged on the outside of the first inner cylinder and / or the second inner cylinder; the outer cylinder includes a first outer cylinder and a second outer cylinder that are detachably connected, and the first connecting end of the outer cylinder is located on the inside of the first outer cylinder and / or the second outer cylinder.

[0008] Furthermore, in some embodiments of the present invention, the first inner cylinder is provided with a first inner cylinder inner cavity and a first inner cylinder connecting portion, the second inner cylinder is provided with a second inner cylinder inner cavity and a second inner cylinder connecting portion cooperating with the first inner cylinder connecting portion, the first inner cylinder inner cavity and the second inner cylinder inner cavity are combined to form an inner cylinder cavity body, the inner cylinder guide groove is provided on the first inner cylinder and / or the second inner cylinder, and the outer cylinder guide groove is provided on the first outer cylinder and / or the second outer cylinder.

[0009] Furthermore, in some embodiments of the utility model, the lead assembly includes a first lead tube and a second lead tube that are detachably connected, the first lead tube and the second lead tube are arranged in an arc shape, the first lead tube is provided with a first lead tube connecting end, the second lead tube is provided with a second lead tube connecting end, the first lead tube connecting end cooperates with the second lead tube connecting end to connect the first lead tube and the second lead tube, and the upper end surface of the first lead tube and / or the second lead tube is provided with a wire outlet groove.

[0010] Furthermore, in some embodiments of the present invention, the first lead tube is provided with a first lead tube cavity, the second lead tube is provided with a second lead tube cavity, the first lead tube cavity and the second lead tube cavity enclose the lead channel, the first lead tube connection end is located at one end of the first lead tube, the second lead tube connection end is located at one end of the second lead tube, the lead wire opening includes a first lead wire opening located at the other end of the first lead tube, and a second lead wire opening located at the other end of the second lead tube, the first lead tube connection end is arranged opposite to the second lead tube connection end, the outer diameter of the first lead tube cavity is larger than the outer diameter of the second lead tube connection end, and the second lead tube connection end can extend into or out of the first lead tube cavity.

[0011] Furthermore, in some embodiments of the present invention, the first lead tube and / or the second lead tube is provided with a lead tube abutting end, the outer tube is provided with an outer tube abutting surface that cooperates and limits with the lead tube abutting end, the first lead tube and / or the second lead tube is also provided with a clamping portion, the lead tube abutting end is located at the bottom of the clamping portion, the outer tube abutting surface is close to the peripheral side of the outer tube guide groove, and the clamping portion is provided with a clamping portion connecting hole for external objects to cooperate and connect.

[0012] Furthermore, in some embodiments of the present invention, the first inner cylinder further includes a first upper inner cylinder and a first lower inner cylinder, the first upper inner cylinder and the first lower inner cylinder together form a first inner cylinder inner cavity, and the second inner cylinder further includes a second upper inner cylinder and a second lower inner cylinder, the second upper inner cylinder and the second lower inner cylinder together form a second inner cylinder inner cavity.

[0013] Further, in some embodiments of the present invention, the first outer cylinder is provided with a first outer cylinder connecting end and a clamping block, the second outer cylinder is provided with a second outer cylinder connecting end and a locking portion, the first outer cylinder connecting end and the second outer cylinder connecting end cooperate to allow the rotation shaft to pass through, so that the first outer cylinder rotates around the rotation shaft relative to the second outer cylinder, and the locking portion abuts against or disengages from the clamping block, so that the outer cylinder can be switched between a locked state and an open state.

[0014] Furthermore, in some embodiments of the present invention, the first inner tube cavity and / or the second inner tube cavity is provided with a plurality of limiting hooks for limiting the position of blood vessels or tissues, the limiting hooks include a limiting hook connecting portion connected to the inner wall of the inner tube cavity, and a hook body connected to the limiting hook connecting portion and extending in a direction away from the limiting hook connecting portion, and the inner tube cavity is provided with an inner tube connecting end for fixing the limiting hook connecting portion.

[0015] Furthermore, in some embodiments of the utility model, the limiting hook is arranged along the circumference of the inner tube cavity, and the barbed end of the hook body extends and bends toward the center direction of the inner tube cavity, and / or the limiting hook is arranged along the axial direction of the inner tube cavity, and the barbed end of the hook body extends and bends toward the center direction of the inner tube cavity.

[0016] The beneficial effects of the utility model are as follows:

[0017] The utility model makes the introduction of suture wire smoother and more accurate by providing a lead-in assembly. The suture wire enters the surgical area in the inner cylinder cavity through a provided channel, thereby more accurately controlling the puncture depth of the suture wire and reducing the operating error and burden of medical staff. By rotating the outer cylinder, medical staff can adjust the introduction angle of the suture wire to adapt to suturing requirements in different positions and directions, effectively improving the stability and efficiency of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The utility model is a schematic diagram of a nerve suturing device.

[0019] Figure 2 for Figure 1 AA section view.

[0020] Figure 3 The utility model is a schematic diagram of a nerve suturing device.

[0021] Figure 4 for Figure 3 BB cross-sectional view.

[0022] Figure 5 The utility model is an exploded view of a nerve suturing device.

[0023] Figure 6 This is an exploded view of a nerve suturing device of the utility model.

[0024] Figure 7 It is a partial cross-sectional view of a nerve suturing device of the utility model.

[0025] Figure 8 This is a partial exploded view of a nerve suturing device of the utility model.

[0026] Fig. 9 This is a partial exploded view of a nerve suturing device of the utility model.

[0027] Fig.10 This is an exploded view of the inner tube of a nerve suturing device of the utility model.

[0028] Fig.11 for Fig.10 Schematic diagram of the limit hook hiding the inner tube.

[0029] Fig.12 This is an exploded view of the inner cylinder in Example 5.

[0030] Fig.13 It is a cross-sectional view of the lead assembly being separated from the inner cylinder cavity.

[0031] Fig.14 for Fig.13 Sectional view after hiding the lead components. DETAILED DESCRIPTION

[0032] The implementation modes of the present utility model are described in detail below in conjunction with the accompanying drawings.

[0033] like Figures 1 to 14 A nerve suturing device shown in the figure includes a main body 1 and a guide wire assembly 2, wherein the main body 1 includes an inner cylinder 3, and an outer cylinder 4 connected to the outside of the inner cylinder 3 and rotatable relative to the inner cylinder 3, the guide wire assembly 2 is provided with a guide wire channel 200 which can be communicated with the inner cylinder 3, and a guide wire port 45 for the suture wire to enter the guide wire channel 200, the inner cylinder 3 is provided with an inner cylinder first connecting end 30, an inner cylinder cavity 300, and an inner cylinder guide wire groove 301 communicated with the inner cylinder cavity 300, the inner cylinder guide wire groove 301 is used for the guide wire assembly 2 to extend into the inner cylinder cavity 300, the outer cylinder 4 is provided with an outer cylinder first connecting end 40 matched with the inner cylinder first connecting end 30, and an outer cylinder guide wire groove 401 connected with the inner cylinder guide wire groove 301, after the outer cylinder 4 rotates relative to the inner cylinder 3, the inner cylinder first connecting end 30 and the outer cylinder first connecting end 40 cooperate so that the outer cylinder 4 remains fixed relative to the inner cylinder 3. The utility model makes the introduction of suture wire smoother and more accurate by setting a lead assembly. The suture wire enters the surgical area in the inner cylinder cavity through a set channel, thereby more accurately controlling the puncture depth of the suture wire, reducing the operation error and burden of medical staff, and by rotating the outer cylinder, the medical staff can adjust the introduction angle of the suture wire to adapt to the suturing needs of different positions and directions, effectively improving the stability and efficiency of the operation. In the absence of external force, the cooperation between the first connection end of the inner cylinder and the first connection end of the outer cylinder ensures the stability during the suturing process and avoids the displacement of the suture position caused by the rotation of the outer cylinder. Specifically, the medical staff first extends the lead assembly from the outer cylinder lead groove to the inner cylinder lead groove. Before starting to sew, the medical staff introduces the suture wire into the lead channel through the lead port, and allows it to enter the inner cylinder cavity to suture the nerve bundle group in the surgical area.

[0034] In the utility model, the inner tube cavity can adapt to nerve bundle groups with different outer diameters. When the outer diameters of the inner tube cavity and the nerve bundle group are close, the lead assembly is inserted into the two separated nerve bundle groups so that the lead channel connects the nerve bundle groups. When the outer diameter of the inner tube cavity is larger than the outer diameter of the nerve bundle group, the lead assembly will be located on the upper side of the nerve bundle group, and space will be reserved on the lead channel to allow the suture wire to penetrate into the two separated nerve bundle groups.

[0035] Optionally, in some embodiments, the lead assembly is separated from the inner cylinder lead groove, and by rotating the outer cylinder, the medical staff can adjust the introduction angle of the suture wire to adapt to the suturing requirements of different positions and directions. When the outer cylinder is rotated to a suitable angle relative to the inner cylinder, the first connection end of the inner cylinder and the first connection end of the outer cylinder cooperate to keep the outer cylinder fixed relative to the inner cylinder, thereby ensuring stability during the suturing process. In the fixed state, the lead assembly re-extends into the inner cylinder lead groove, and the medical staff can accurately control the introduction position and depth of the suture wire through the lead assembly to achieve precise suturing. Furthermore, as a preferred embodiment of the present invention but not a limitation, the outer cylinder guide groove is located on the upper side of the outer cylinder, and is used to guide the wire to enter or leave the suture area from the outside, and the inner cylinder guide groove is connected to the outer cylinder guide groove and leads to the inner cavity of the inner cylinder. The outer cylinder guide groove and the inner cylinder guide groove enable surgical wires such as sutures, wires, etc. to pass smoothly through the outer cylinder and the inner cylinder from the outside to reach the surgical area, thereby avoiding entanglement or misalignment of the wires during operation, greatly reducing the clutter and interference of the wires during the operation, and avoiding unnecessary friction and extrusion between the wires and other parts of the device, thereby reducing the risk of wear and breakage of the wires. Medical staff can control the tension and position of the sutures more accurately, thereby improving the quality and efficiency of the operation. Since the wires are guided to the surgical area through the guide assembly, they will not be scattered in the surgical field at will, thereby optimizing the clarity of the surgical field, facilitating more accurate surgical operations, and improving the convenience and efficiency of the operation.

[0036] like Figure 4A nerve suturing device is shown, wherein the inner cylinder 3 comprises a first inner cylinder 31 and a second inner cylinder 32 which are detachably connected, and the first connecting end 30 of the inner cylinder is arranged on the outside of the first inner cylinder 31 and / or the second inner cylinder 32, and the outer cylinder 4 comprises a first outer cylinder 41 and a second outer cylinder 42 which are detachably connected, and the first connecting end 40 of the outer cylinder is located on the inside of the first outer cylinder 41 and / or the second outer cylinder 42. The cross-sections of the first inner cylinder and the second inner cylinder are both arranged in an arc shape, and the cross-sections of the first outer cylinder and the second outer cylinder are both arranged in an arc shape. The first outer cylinder and the second outer cylinder are enclosed to form an outer cylinder cavity. Further, as a preferred embodiment of the utility model but not a limitation, the separate arrangement of the first inner cylinder and the second inner cylinder makes the entire suturing device more modular, which is convenient for separate manufacturing, assembly and disinfection. Medical staff can select first inner cylinders and second inner cylinders of different sizes and models according to the specific needs of the operation, thereby providing greater surgical flexibility.

[0037] Specifically, the outer tube first connection end provided on the inner wall of the outer tube can be a raised tooth, a groove or other shape that can match with the inner tube first connection end on the inner tube. The inner tube first connection end is tightly matched with the outer tube first connection end to ensure that the inner tube is kept in a stable position relative to the outer tube, ensuring that the nerve bundle group can be stably and accurately aligned, reducing the alignment error caused by unstable human operation during surgery, and improving the safety and success rate of the surgery.

[0038] Optionally, in some embodiments, the first connection end of the outer tube is in the form of raised teeth, and the first connection end of the inner tube is in the form of a groove and matches with the raised teeth of the first connection end of the outer tube.

[0039] like Figures 2 to 10 A nerve suturing device is shown, wherein the first inner cylinder 31 is provided with a first inner cylinder cavity 310 and a first inner cylinder connecting portion 311, the second inner cylinder 32 is provided with a second inner cylinder cavity 320 and a second inner cylinder connecting portion 321 cooperating with the first inner cylinder connecting portion 311, the first inner cylinder cavity 310 and the second inner cylinder cavity 320 are enclosed to form an inner cylinder cavity 300, the inner cylinder guide groove 301 is provided on the first inner cylinder 31 and / or the second inner cylinder 32, and the outer cylinder guide groove 401 is provided on the first outer cylinder 41 and / or the second outer cylinder 42. Further, as a preferred embodiment of the present utility model but not a limitation, when the first cylinder body and the second cylinder body are connected, the first cylinder cavity and the second cylinder cavity are enclosed to form a complete inner cylinder cavity, providing a closed and fixed space for the nerve bundle group, which is convenient for surgical operation.

[0040] Optionally, in some embodiments, the inner barrel wire guide groove can be provided on the first barrel or the second barrel alone, or on both the first barrel and the second barrel. The wire guide assembly can provide a channel for the suture wire, and the inner barrel wire guide groove allows the wire guide assembly to extend into the inner barrel cavity and allows the suture wire to extend into the inner barrel cavity.

[0041] Optionally, in some embodiments, when the first outer cylinder 41 rotates relative to the second outer cylinder 42 around the horizontally arranged rotating shaft 7, the first inner cylinder 31 and the second inner cylinder 32 are connected in the horizontal direction. Specifically, the detachable connection between the first inner cylinder and the second inner cylinder enables the inner cylinder to be placed and adjusted during the operation or removed after the operation is completed. Optionally, in some embodiments, the detachable inner cylinder design makes the device easier to clean and maintain, and medical staff can easily disassemble and clean the inner cylinder to remove blood and other dirt generated during the operation.

[0042] Optionally, in some embodiments, the first inner cylinder connection part and the second inner cylinder connection part are stably and detachably connected by snaps, snap fits, threaded interfaces, mortise and tenon structures, magnetic structures, groove connections, fastener structures, etc. When the nerve bundle needs to be precisely aligned and fixed in the horizontal direction during surgery, the horizontal connection of the first inner cylinder and the second inner cylinder can better meet the surgical requirements and improve the accuracy and efficiency of the operation.

[0043] Specifically, when the first outer cylinder is rotated relative to the second outer cylinder about a horizontally arranged rotation axis and is in an unlocked state, the first inner cylinder and the second inner cylinder are smoothly connected or separated in a horizontal direction. By operating the opening and closing of the outer cylinder, medical staff can easily connect or separate the first inner cylinder and the second inner cylinder of the inner cylinder without the need for additional tools or complicated operation steps.

[0044] like Fig.12A nerve suturing device is shown, wherein the first inner cylinder 31 further comprises a first upper inner cylinder 3101 and a first lower inner cylinder 3102, wherein the first upper inner cylinder 3101 and the first lower inner cylinder 3102 enclose a first inner cylinder lumen 310, and the second inner cylinder 32 further comprises a second upper inner cylinder 3201 and a second lower inner cylinder 3202, wherein the second upper inner cylinder 3201 and the second lower inner cylinder 3202 enclose a second inner cylinder lumen 320. When the two separated nerve bundles are sutured, they will be tightened, and the nerve bundles will exert a certain squeezing force on the lumen of the first inner cylinder. If the first inner cylinder formed as a whole is directly pulled to the side when it is removed, it is easy to cause certain damage to the nerve bundles. The arrangement of the first upper inner cylinder and the first lower inner cylinder enables the first upper inner cylinder to move upward after the nerve bundles are sutured, thereby avoiding the pulling of the nerve bundles when the first inner cylinder is removed. Similarly, when the two separated nerve bundles are sutured, they will be tightened, and the nerve bundles will exert a certain squeezing pressure on the inner cavity of the second inner tube. If the second inner tube formed as a whole is directly pulled sideways during removal, it is easy to cause certain damage to the nerve bundles. The setting of the second upper inner tube and the second lower inner tube allows the second upper inner tube to move upward after the nerve bundles are sutured, thereby avoiding pulling of the nerve bundles when the second inner tube is removed.

[0045] like Figures 2 to 10 A nerve suturing device is shown, the lead assembly 2 includes a first lead tube 21 and a second lead tube 22 which are detachably connected, the first lead tube 21 and the second lead tube 22 are arranged in an arc shape, the first lead tube 21 is provided with a first lead tube connecting end 211, the second lead tube 22 is provided with a second lead tube connecting end 221, the first lead tube connecting end 211 cooperates with the second lead tube connecting end 221 to connect the first lead tube 21 and the second lead tube 22, and the upper end surface of the first lead tube 21 and / or the second lead tube 22 is provided with a wire outlet groove 8.

[0046] Specifically, the first guide tube extends into the inner cylinder cavity from one side of the inner cylinder guide groove, and the second guide tube extends into the inner cylinder cavity from the other side of the inner cylinder guide groove. After the first guide tube and the second guide tube are connected, a guide channel for suture wire to enter and exit is formed. Such an arrangement not only ensures the directional guidance of the wire, but also guides the suture wire in and out of the inner cylinder cavity without obstruction. The first guide tube and the second guide tube are connected by a detachable connection method, which is convenient for medical staff to adjust the connection or disconnection of the first guide tube and the second guide tube according to surgical needs, facilitates the adjustment of the wire during the operation, and reduces the complexity of the operation.

[0047] Specifically, the lead-in ports are respectively arranged on the first lead-in tube and the second lead-in tube, and the suture wire can be extended from the first lead-in tube and extended from the second lead-in tube, or from the second lead-in tube and extended from the first lead-in tube, thereby facilitating the suturing operation for medical staff.

[0048] Furthermore, as a preferred embodiment of the present invention but not a limitation, the first guide tube and the second guide tube are both designed to be arc-shaped, which can better fit the shape of the surgical area, and help guide the suture wire to enter the surgical area at a suitable angle and connect with the nerve bundle group, thereby improving the flexibility of the operation. In addition, the arc-shaped setting of the first guide tube and the second guide tube can better adapt to the natural curve of physiological structures such as nerves or blood vessels, especially when dealing with curved or sensitive nerve tissues, which helps to reduce friction and unnecessary pressure during the operation, thereby reducing the compression and damage to the nerve bundle group and improving the safety of the operation.

[0049] Specifically, the matching mode of the first lead tube connection end and the second lead tube connection end ensures the stability and fixity of the first lead tube and the second lead tube during use, avoids surgical errors caused by the movement or dislocation of the first lead tube and the second lead tube during surgery, and improves the accuracy of suturing and the success rate of surgery. In addition, medical staff can quickly complete the installation or adjustment of the first lead tube and the second lead tube without interrupting the surgical process, which reduces the operation time, reduces the workload of the surgical team, reduces the complexity of replacing or adjusting tools during surgery, and helps maintain the continuity and efficiency of the surgery.

[0050] Optionally, in some embodiments, the first lead tube connection end and the second lead tube connection end cooperate with each other, so that the medical staff can flexibly adjust the length and position of the first lead tube and the second lead tube according to the needs of the operation, and can quickly change the guide path of the wire as needed during the operation, thereby improving the flexibility and adaptability of the operation. When the medical staff lifts the distance between the first lead tube and the second lead tube at the same time, the first lead tube connection end remains connected to the second lead tube connection end, and the length of the lead channel formed between the first lead tube and the second lead tube will increase or remain unchanged. Of course, in some other embodiments, when the medical staff lifts the distance between the first lead tube and the second lead tube at the same time, the first lead tube connection end is separated from the second lead tube connection end, and the length of the lead channel formed between the first lead tube and the second lead tube will increase, and the suture wire can enter the inner tube cavity from the gap between the first lead tube connection end and the second lead tube connection end.

[0051] Optionally, in some embodiments, the cooperation between the first lead tube connecting end and the second lead tube connecting end can be achieved by threaded connection, snap connection, mortise and tenon connection, groove connection, magnetic connection, etc. The first lead tube and the second lead tube can be assembled or disassembled according to surgical needs, thereby improving the applicability and operational convenience of the first lead tube and the second lead tube.

[0052] like Figures 2 to 14A nerve suturing device is shown, wherein the first guide tube 21 is provided with a first guide tube cavity 210, and the second guide tube 22 is provided with a second guide tube cavity 220, the first guide tube cavity 210 and the second guide tube cavity 220 enclose the guide channel 200, the first guide tube connection end 211 is located at one end of the first guide tube 21, the second guide tube connection end 221 is located at one end of the second guide tube 22, the guide opening 45 includes a first guide opening 451 located at the other end of the first guide tube 21, and a second guide opening 452 located at the other end of the second guide tube 22, the first guide tube connection end 211 and the second guide tube connection end 221 are arranged opposite to each other, the outer diameter of the first guide tube cavity 210 is larger than the outer diameter of the second guide tube connection end 221, and the second guide tube connection end 221 can extend into or out of the first guide tube cavity 210. Furthermore, as a preferred embodiment of the present invention but not a limitation, the first guide tube cavity and the second guide tube cavity enclose a guide channel for accommodating and guiding suture wires, and the shape and size of the guide channel can adapt to different types of suture wires, which not only provide a safe and smooth channel for the suture wires, but also may help reduce the twisting or deformation damage of the wires during the advancement or withdrawal process, thereby ensuring the smooth operation of the sutures and improving the fluency of the operation.

[0053] Further, as a preferred embodiment of the present invention but not a limitation, the first lead tube connection end and the second lead tube connection end are arranged relative to each other, ensuring that the first lead tube and the second lead tube can be accurately docked, maintaining the overall stability of the lead assembly, specifically, when the first lead tube and the second lead tube are connected, the first lead tube connection end and the second lead tube connection end are face-to-face docked with each other, thereby ensuring that the first lead tube and the second lead tube can be closely matched to form an overall pipeline structure, so that the suture wire can pass smoothly, avoiding the interruption or repositioning of the operation due to loose connection, and improving the efficiency of the operation. It is also convenient to adjust the entry and exit path of the wire as needed during the operation, improving the flexibility of the operation.

[0054] Furthermore, as a preferred embodiment of the utility model but not a limitation, the first lead wire port and the second lead wire port are respectively located at the other end of the first lead wire tube and the second lead wire tube, ensuring that the path of the wire is controllable when entering and leaving the first lead wire tube and the second lead wire tube, which helps medical staff to more accurately control the puncture depth and position of the suture during operation, reduces operational errors, and improves the accuracy and safety of the operation.

[0055] Optionally, in some embodiments, medical personnel can place the first lead tube connection end opposite to the second lead tube connection end, and tightly connect the two by means of a snap connection. After the connection, the suture wire can be extended from the first lead tube port into the first lead tube cavity, pass through the nerve bundle group in the inner tube cavity, and extend from the second lead tube port to complete the suturing action.

[0056] Furthermore, as a preferred embodiment of the present invention but not a limitation, when the outer diameter of the first lead tube cavity is larger than the outer diameter of the second lead tube connection end, the second lead tube connection end can be inserted into the first lead tube cavity to achieve a tight connection between the two, thereby avoiding disengagement due to accidental movement during the surgical operation, and ensuring the continuity and safety of the operation. When disassembly is required, the second lead tube connection end is detached from the first lead tube cavity, which facilitates rapid adjustment, replacement of the lead path or disassembly of the lead assembly according to actual conditions during the operation, thereby improving the flexibility and efficiency of the operation.

[0057] Optionally, in some embodiments, the arc-shaped second guide tube connecting end is precisely docked with the first guide tube cavity, thereby reducing direct manipulation of nerve or vascular tissue during surgery, reducing the risk of additional injury caused by improper operation, ensuring the integrity of the surgical area, and facilitating the patient's postoperative recovery.

[0058] Optionally, in some embodiments, the outlet groove is an opening or groove located on the upper end surface of the first lead tube or the second lead tube, or an opening or groove located on the upper end surface of the first lead tube and the second lead tube at the same time. The outlet groove helps medical staff to more accurately control the position and direction of the suture wire, and the suture wire can be more smoothly led out from the inside of the lead assembly to the outside, which is more convenient for suturing operations, thereby improving the efficiency and success rate of the operation. Optionally, in some embodiments, the shape of the outlet groove can be a straight line or an arc shape. Optionally, in some embodiments, during the operation, the medical staff can extend the suture wire from the first lead port or the second lead port into the corresponding first lead tube cavity or the second lead tube cavity, and then pass through the inner tube cavity to reach the outlet groove position. At this time, the medical staff can easily lead the suture wire to the outside through the outlet groove and perform a knotted suture operation. Through the guidance of the outlet groove, the suture can remain stable when passing through, reducing misoperation caused by wire jitter, and increasing the stability of the surgical operation.

[0059] like Figures 2 to 14A nerve suturing device is shown, wherein the first guide tube 21 and / or the second guide tube 22 is provided with a guide tube abutment end 23, the outer tube 4 is provided with an outer tube abutment surface 43 which cooperates with the guide tube abutment end 23 to limit the position, the first guide tube 21 and / or the second guide tube 22 is further provided with a clamping portion 24, the guide tube abutment end 23 is located at the bottom of the clamping portion 24, the outer tube abutment surface 43 is close to the peripheral side of the outer tube guide groove 401, and the clamping portion 24 is provided with a clamping portion connection hole 241 for external objects to cooperate and connect. Further, as a preferred embodiment of the utility model but not a limitation, the outer tube is located outside the inner tube, which can provide additional fixation and support for the entire surgical lead assembly, avoid displacement of the lead assembly due to careless operation, thereby affecting the accuracy of the operation, and ensure that the main body can remain stable during the operation.

[0060] Optionally, in some embodiments, the size and shape of the outer tube wire groove match the inner tube wire groove, and the first wire tube and / or the second wire tube are connected to the inner tube wire groove through the outer tube wire groove to ensure smooth and tight connection.

[0061] Optionally, in some embodiments, the shape and size of the guide tube abutment end match the outer tube abutment surface to ensure close fit and stable fixation between the two, and the outer tube abutment surface can ensure that the first guide tube and / or the second guide tube can be stably fixed and limited at a certain height after being inserted into the outer tube, so as to avoid loosening or slipping during the operation. Specifically, the guide tube abutment end cooperates with the outer tube abutment surface of the outer tube to achieve a stable fixing effect, and by limiting the range of movement of the guide assembly, the correct position of the guide assembly during use is ensured to avoid excessive insertion or disengagement, thereby maintaining the accuracy and consistency of the operation process. During the operation, the medical staff can first insert the first guide tube and the second guide tube into the outer tube guide groove respectively, and ensure that they are correctly connected to the inner tube guide groove. Then, by adjusting the position of the first guide tube and the second guide tube, their guide tube abutment ends are closely fitted with the outer tube abutment surface to achieve a stable fixing effect. Finally, the medical staff can introduce or lead out the suture wire through the guide assembly for suture operation.

[0062] An outer cylinder second connecting groove 402 for the wire to pass through is provided on the inner side of the outer cylinder guide groove, and the outer cylinder guide groove 401 is arranged in the horizontal direction, and the outer cylinder second connecting groove 402 is connected to the outer cylinder guide groove 401 and is arranged in the vertical direction. Further, as a preferred embodiment of the utility model but not a limitation, the outer cylinder guide groove is arranged in the horizontal direction, and an outer cylinder second connecting groove in the vertical direction is provided on the inner side of the outer cylinder guide groove. Such an arrangement enables the suture wire to change its path in both horizontal and vertical dimensions, thereby increasing the flexibility of wire guiding. In nerve suturing surgery, it can adapt to the requirements of suture paths in different directions. The connecting structure between the outer cylinder guide groove and the outer cylinder second connecting groove not only provides a smooth passage for the wire, but also effectively avoids the entanglement or damage of the wire when changing direction, thereby reducing the problems of wire entanglement and blocking of sight during surgery.

[0063] Optionally, in some embodiments, the vertical outer cylinder second connecting groove is combined with the horizontal outer cylinder guide groove to provide a stable support frame for the wire. When performing deep suturing, such a setting can prevent the wire from moving or bending unnecessarily under the action of gravity, thereby ensuring the accuracy of the suturing process.

[0064] Optionally, in some embodiments, the wire outlet groove is connected to the outer tube guide groove. When the suture wire enters the outer tube guide groove from the guide assembly through the wire outlet groove, the suture wire can easily turn and enter the second connecting groove of the outer tube. This helps to control the direction of the wire, making the operation of the wire during surgery smoother and more accurate.

[0065] When the operation process needs to be suspended, the medical staff can first insert the wire into the horizontal part of the outer tube lead groove, and then naturally transition it to the vertical part of the second connecting groove of the outer tube. By adjusting the position of the wire in the vertical direction and limiting it with the second connecting groove of the outer tube, part of the wire remains in the cavity, and part of the wire is supported on the outside of the outer tube lead groove. The medical staff does not need to completely remove the adjusted wire when pausing the operation, and can more conveniently perform the suturing operation. Further, as a preferred embodiment of the utility model but not limited, the accurate position of the lead assembly in a fixed state is further guaranteed by the cooperation between the lead tube abutting end and the outer tube abutting surface, avoiding loosening or slipping during the operation, making the introduction and export process of the wire smoother and reducing the complexity of the surgical operation. In addition, the outer tube abutting surface is close to the peripheral side of the outer tube lead groove, which is not only conducive to the stable installation of the lead assembly, but also enables the outer tube to provide appropriate support and limit when the lead tube clamping part is engaged, thereby preventing the lead assembly from shifting or rotating during use. When preparing for and performing surgery, lead components can be positioned and secured more quickly and accurately, reducing surgical preparation time and improving the smoothness of the surgical process.

[0066] In addition, an arc-shaped outer cylinder limiting groove 403 is provided inside the outer cylinder lead groove, and an outer cylinder third connecting groove 4031 is provided inside the outer cylinder limiting groove, which is fixed and slidably matched with the first positioning end and the second positioning end on the outer side of the lead assembly. Such a configuration enables the lead assembly to move along the arc-shaped outer cylinder limiting groove to prevent it from being disengaged and shifted.

[0067] Specifically, the clamping part connection hole is convenient for medical staff to use tools such as micro forceps to drive the movement of the lead assembly. Furthermore, the clamping part connection hole is provided with multiple holes, which is convenient for medical staff to drive the movement of the lead assembly from different angles. The clamping part connection hole includes a first clamping part connection hole 2411 and a second clamping part connection hole 2412. The penetration path of the first clamping part connection hole extends in the horizontal direction and is perpendicular to the extension direction of the outer tube lead groove, which is convenient for medical staff to move the lead assembly from the front of the nerve suturing device when facing the nerve suturing device. The penetration path of the second clamping part connection hole extends in the horizontal direction and is parallel to the extension direction of the outer tube lead groove, which is convenient for medical staff to move the lead assembly from the side of the nerve suturing device when facing the nerve suturing device. During the operation, the medical staff can insert the first lead tube or the second lead tube into the outer tube lead groove 401. During the insertion process, the engaging portion 24 of the first lead tube 21 and the second lead tube 22 will contact the outer tube abutment surface 43 and gradually enter the outer tube 4. When the engaging portion 24 completely enters the outer tube 4 and is in close contact with the outer tube abutment surface 43, one end of the first lead tube 21 and the second lead tube 22 is stably fixed outside the outer tube 4.

[0068] The lower end surface of the first lead tube 21 and / or the second lead tube 22 is provided with a threading groove. Furthermore, as a preferred embodiment of the utility model but not a limitation, medical staff can more easily insert the suture wire into the nerve bundle group during operation to ensure the correct position and depth of the wire, thereby enhancing the operability and accuracy of the operation. The threading groove helps to reduce the friction of the wire and the damage to the wire during the threading process, avoiding the risk of surgical failure caused by damage to the wire during the operation. In addition, the size of the threading groove can prevent the wire from slipping during the insertion process, ensuring the smooth progress of the operation. The threading groove on the lower end surface of the first lead tube and / or the second lead tube can avoid the need to move the lead assembly too much to adjust the wire during the surgical operation, reduce the obstruction of the surgical field, enable medical staff to better focus on the surgical area, and improve the accuracy and safety of the operation.

[0069] Optionally, in some embodiments, the threading groove is located at an opening or groove on the lower end surface of the first lead tube or the second lead tube, or is located at an opening or groove on the lower end surface of both the first lead tube and the second lead tube. After the suture wire is passed through the interior of the lead assembly, it enters the inner tube cavity through the threading groove.

[0070] Optionally, in some embodiments, the threading groove corresponds to the outlet groove, so that the wire can smoothly pass into and out of the inner cylinder cavity. Optionally, in some embodiments, the threading groove can be linear, arc-shaped or other shapes to facilitate the threading operation of medical staff.

[0071] Specifically, during the operation, medical staff can insert one end of the suture wire into the first guide tube or the second guide tube, and then pass through the inner tube cavity through the threading groove to suture the nerve bundle group.

[0072] The outer side of the first guide tube 21 is provided with a first positioning block 212, and the inner tube guide groove 301 is provided with a first positioning end 3011 that cooperates with the first positioning block 212, and / or, the outer side of the second guide tube 22 is provided with a second positioning block 222, and the inner tube guide groove 301 is provided with a second positioning end 3012 that cooperates with the second positioning block 222. Further, as a preferred embodiment of the utility model but not a limitation, during the operation, the medical staff can insert the first guide tube and the second guide tube into the inner tube guide groove respectively, and ensure that the first positioning block and the first positioning end, and the second positioning block and the second positioning end are tightly matched. Then, through the structures such as the outlet groove and the threading groove, the suture wire is introduced or led out for suturing operation.

[0073] Specifically, the first positioning block and the second positioning block cooperate with the corresponding first positioning end and the second positioning end in the inner tube wire groove, realizing the precise positioning and fixation of the lead assembly during the operation, which helps medical staff to quickly and accurately fix the lead assembly in place when installing it without complicated operations, reducing the complexity of surgical preparation, reducing operation time, and improving the work efficiency of the operating room. At the same time, the stability of the lead assembly during the entire operation is guaranteed, avoiding surgical risks caused by movement or slippage. The installation position of the lead assembly is consistent, which helps to maintain the predictability and quality control of the surgical effect when the same operation needs to be repeated multiple times, and reduces the operation differences caused by human factors. In addition, the first positioning block and the second positioning block cooperate with the corresponding first positioning end and the second positioning end in the inner tube wire groove, reducing the risk of unnecessary pulling and damage to sensitive tissues such as nerves and blood vessels during the operation, protecting the integrity of the surgical area, and further improving the safety of the operation.

[0074] like Figures 1 to 9A nerve suturing device is shown, wherein the first outer tube 41 is provided with a first outer tube connecting end 411 and a block 412, and the second outer tube 42 is provided with a second outer tube connecting end 421 and a locking portion 422. The first outer tube connecting end 411 and the second outer tube connecting end 421 cooperate to allow the rotating shaft 7 to pass through, so that the first outer tube 41 can rotate around the rotating shaft 7 relative to the second outer tube 42, and the locking portion 422 abuts against or disengages from the block 412, so that the outer tube 4 can be switched between a locked state and an open state.

[0075] For a nerve suturing connector of a relatively small volume, it is necessary to design multiple connecting piece slides and sliding fasteners for matching, which requires high process precision of the connector and is quite inconvenient to operate. The utility model also includes an auxiliary part 6 that matches with the main body, and the auxiliary part 6 includes a matching part 61 that matches with the locking part. The utility model can ensure the stability and alignment of the nerve bundle group during the operation through the matching of the inner tube and the outer tube, as well as the function of the locking part and the matching part, thereby improving the efficiency and success rate of nerve suturing; the utility model does not need to design complex connecting piece slides and sliding fasteners, reduces the requirements for process precision, and improves the convenience of operation.

[0076] Further, as a preferred embodiment of the utility model but not limited thereto, the suturing device is divided into two parts, a main body and an auxiliary part, which is conducive to rapid assembly and adjustment according to actual needs during surgery, and is convenient for cleaning and disinfection, thereby improving surgical efficiency. The suturing device of the utility model is suitable for nerve bundle groups of different volumes and has a wide range of applicability. Specifically, the inner cylinder is used to be inserted between the nerve bundle groups to be sutured, providing support and protection for the nerve bundle groups, and the outer cylinder is wrapped around the outside of the inner cylinder and used to fix the position of the inner cylinder to ensure that the inner cylinder does not move during surgery. In addition, the locking portion provided on the outer cylinder is used to further lock the position of the outer cylinder after the outer cylinder and the inner cylinder are fixed, so as to prevent the outer cylinder from moving or opening by mistake during surgery. Optionally, in some embodiments, the fitting may be a knob, a switch or other component that can interact with the locking member. By operating the fitting, the opening and closing of the locking portion can be controlled, thereby controlling the switching of the outer cylinder between the locked state and the open state.

[0077] When in use, first insert the inner tube between the nerve bundles to be sutured, and then put the outer tube on the inner tube so that the first connection end of the outer tube matches the first connection end of the inner tube, thereby fixing the position of the inner tube. Then, by operating the matching piece on the auxiliary piece, control the locking part to close, lock the outer tube in a locked state, and ensure the stability of the inner tube and the outer tube during the operation. When it is necessary to adjust the position of the inner tube or remove the inner tube, it is only necessary to operate the matching piece to open the locking part, and then the outer tube can be switched to an open state, which is convenient for medical staff to perform subsequent operations. Specifically, when the locking part abuts against the block, the outer tube is in a locked state and can prevent relative movement between the inner tube and the outer tube; when the locking part is separated from the block, the outer tube can be opened so that the inner tube can be removed or placed.

[0078] Optionally, in some embodiments, the locking portion on the second outer tube can be a movable component or mechanical structure, such as a button, a slider, a lever, etc. The locking portion cooperates with the matching piece to achieve a locking or unlocking action, thereby locking or opening the outer tube. The interaction between the block and the locking portion ensures the tightness and stability of the outer tube when it is closed, reducing the risk of accidental sliding.

[0079] Optionally, in some embodiments, the matching piece can be a separate tool or a part of the auxiliary piece, and the matching piece is used to operate the matching locking part so that the locking part can abut or disengage from the block. Then the locking state or the open state of the outer tube is controlled. The setting of the matching piece enables medical staff to easily control the tight abutment or smooth disengagement of the locking part on the second outer tube and the block, so that the suturing auxiliary device can quickly switch the locking and opening states through simple operations during the operation, thereby improving the efficiency and safety of the operation.

[0080] The locking portion 422 is provided with a connection groove 4221, and the matching piece 61 is provided with a convex block 611 that matches with the connection groove 4221, or the locking portion 4222 is provided with a convex block 611, and the matching piece 61 is provided with a connection groove 4221 that matches with the convex block 611. Further, as a preferred embodiment of the present utility model but not a limitation, through the cooperation of the connection groove and the convex block, it can be ensured that the connection between the locking portion and the matching piece is more firm and stable, and it is convenient for the matching piece to drive the locking portion to move, so that it is better suitable for nerve suturing surgery, providing a better operating experience for medical staff, thereby improving the success rate and effect of the surgery.

[0081] Optionally, in some embodiments, the locking portion is provided with a connection groove, and the matching piece is provided with a protrusion matching the connection groove. When the matching piece is inserted and rotated or pushed into place, the protrusion will be embedded in the groove of the locking portion, thereby forming a firm mechanical connection. This connection method can ensure that the matching piece drives the locking portion to move, thereby controlling the locking state or the opening state of the outer tube.

[0082] Optionally, in some other embodiments, the locking portion is provided with a projection, and the matching piece is provided with a connection groove corresponding to the projection. By embedding the projection of the locking portion into the connection groove of the matching piece, a tight connection can also be achieved and the locking portion can be driven to rotate or move linearly through the matching piece. The tight fit between the projection and the connection groove helps to ensure the correct alignment between the matching piece and the locking portion to form a foolproof function, and the locking or unlocking of the device can be achieved with a simple operation without complicated steps, thereby reducing the operation time and the fatigue of the medical staff. Specifically, the first outer cylinder connection end is provided with a first outer cylinder connection end opening for accommodating the rotating shaft, and the second outer cylinder connection end is provided with a second outer cylinder connection end opening for accommodating the rotating shaft, and the rotating shaft passes through the first outer cylinder connection end opening and the second outer cylinder connection end opening, so that the first outer cylinder or the second outer cylinder can rotate around the rotating shaft.

[0083] Optionally, in some embodiments, when the suturing auxiliary device needs to be opened or closed, the first outer cylinder rotates relative to the second outer cylinder about the rotating shaft. Such a configuration allows the first outer cylinder to be opened and closed, thereby easily placing or removing the inner cylinder without complicated operations. At the same time, when the inner and outer cylinders are in a closed state, the rotating shaft ensures that the first outer cylinder and the second outer cylinder are closely connected and remain stably fixed, so as to accurately control the position of the nerve bundle group and perform suturing.

[0084] The second outer cylinder 42 is provided with a fixing groove 4222 for fixing the locking part 422, and a limiting groove 4223 which is connected with the fixing groove 4222 and into which the clamping block 412 extends, the locking part 422 is provided with a locking limiting end 4224, and the clamping block 412 is provided with a clamping block abutting end 4121 which cooperates with the locking limiting end 4224. Further, as a preferred embodiment of the utility model but not a limitation, the fixing groove can ensure that the locking part is stably positioned on the outer cylinder, avoiding positional deviation caused by external factors. Through the structure of the limiting groove, it can be ensured that the clamping block extends into the correct position and abuts or disengages from the locking part, thereby effectively forming a locked or unlocked state. Thereby improving the stability and reliability of the device.

[0085] Optionally, in some embodiments, the locking limit end is a protrusion or edge on the locking part. When the block enters the limit groove, the locking part is rotated by operating the mating piece, so that the locking limit end of the locking part rotates a certain angle and cooperates with the block abutment end of the block, thereby achieving a locked state.

[0086] Optionally, in some embodiments, when the first outer cylinder is rotated to a suitable position, the block extends into the limit groove, and the locking portion is slid by operating the matching piece, so that the locking limit end of the locking portion slides to a certain position and cooperates with the block abutting end of the block, and the first outer cylinder is locked on the second outer cylinder. When the outer cylinder is locked, a stable connection between the inner cylinder and the outer cylinder can be ensured. In addition, when it is necessary to adjust the position of the inner cylinder or remove the inner cylinder, it is only necessary to operate the matching piece in the reverse direction to make the locking limit end disengage from the block abutting end, and the first outer cylinder can be rotated in the opposite direction to switch the outer cylinder to the open state, which is convenient for medical staff to perform subsequent operations.

[0087] The locking portion 422 is arranged in an arc shape and is provided with a locking portion groove 4225 for the block abutting end 4121 to extend into, the locking limit end 4224 is located at one end of the locking portion groove 4225, the block 412 is provided with a block mating surface 4122 for the locking limit end 4224 to extend into, and the block 412 is C-shaped. Further, as a preferred embodiment of the utility model but not limited thereto, by utilizing the arc structure of the locking portion and the C-shape of the block, the locking and unlocking mechanism is realized through the interaction between the two. Such a structure is not only easy to operate, but also provides a reliable locking function between the first outer cylinder and the second outer cylinder, which helps to maintain accurate alignment and connection stability between the inner cylinder and the outer cylinder during surgery.

[0088] Optionally, in some embodiments, the locking portion adopts an arc-shaped design, which can facilitate the rotation of the locking portion. In addition, the abutting end of the C-shaped block can extend into the groove of the locking portion, and the locking limit end simultaneously extends into the matching surface of the block and is connected. The locking limit end cooperates with the abutting end of the block so that the block can fit tightly on the locking portion to prevent the block from further moving, thereby further enhancing the connection stability between the first outer tube and the second outer tube.

[0089] The outer side of the outer tube 4 and / or the inner tube 3 is provided with a positioning groove 430, and the auxiliary component 6 includes a positioning portion 80 that cooperates with the positioning groove 430, and the positioning portion 80 is used to limit the sliding of the outer tube 4 and / or the inner tube 3. Further, as a preferred embodiment of the utility model but not a limitation, the matching design of the positioning groove and the positioning portion can effectively limit the sliding of the outer tube and / or the inner tube during the operation, ensuring that the relative position between the inner and outer tubes is stable and unchanged, which can greatly reduce the surgical risks caused by the movement of the outer tube or the inner tube, and prevent the misalignment of the nerve bundle group caused by the accidental movement of the outer tube or the inner tube, thereby improving the safety and success rate of the operation. This design can also simplify the operation of medical staff, and no extra hands are needed to stabilize the outer tube, so that they can focus more on the operation itself.

[0090] The extension length of the inner cylinder cavity is greater than the extension length of the outer cylinder cavity, and the first inner cylinder and the second inner cylinder part protrude to the outside of the outer cylinder cavity. Optionally, in some embodiments, the first inner cylinder protrudes to the outside of the outer cylinder cavity, and a plurality of positioning grooves are arranged around the periphery of the second inner cylinder. The positioning grooves on the outer periphery of the first inner cylinder and the inner cylinder center axis are provided with an inclination angle, and the inclination angle is 15-45 degrees. Preferably, the inclination angle is 22.5 degrees. The positioning grooves on the outer periphery of the first inner cylinder and the positioning grooves on the outer periphery of the second inner cylinder are arranged in an eight-shaped arrangement at the same height. With such an arrangement, the positioning part can extend into the positioning groove on the outer side for positioning, which is convenient for medical staff to perform positioning operations on the inner cylinder from the side of the device, so that the use of the auxiliary parts is more flexible.

[0091] Additionally, in some embodiments, the first outer tube is provided with a first outer tube positioning groove on both sides along the axial direction, and the second outer tube is provided with a second outer tube positioning groove on both sides along the axial direction. An inclination angle is provided between the positioning groove of the first outer tube and the central axis of the outer tube, and the inclination angle is 15-45 degrees, preferably, the inclination angle is 22.5 degrees, and an inclination angle is provided between the positioning groove of the second outer tube and the central axis of the outer tube, and the inclination angle is 15-45 degrees, preferably, the inclination angle is 22.5 degrees, and the positioning groove of the first outer tube and the positioning groove of the second outer tube at the same height position are arranged in an eight-shaped shape.

[0092] Optionally, in some embodiments, the positioning groove is provided in a groove or channel outside the outer cylinder to cooperate with the positioning portion. The positioning groove can be a continuous groove, or a series of grooves arranged at intervals, and specifically, the cross-section of the positioning groove is circular. Optionally, in some embodiments, the positioning groove is provided in a groove or channel outside the inner cylinder to cooperate with the positioning portion. The positioning groove can be a continuous groove, or a series of grooves arranged at intervals, and specifically, the cross-section of the positioning groove is circular.

[0093] Optionally, in some embodiments, the positioning portion is a part of the auxiliary component, and its shape and size match the positioning groove. The positioning portion is a protrusion, a pin, a buckle or other structure suitable for inserting into the positioning groove. Specifically, the positioning portion is a cylinder that matches the circular positioning groove.

[0094] The inner cylinder 3 and the outer cylinder 4 are both arc-shaped and provided with a perspective area, and the auxiliary component 6 also includes a connecting rod 90 connected between the positioning portion 80 and the matching component 61. Optionally, in some embodiments, the inner cylinder and the outer cylinder are made of a transparent plastic material with supporting hardness. In order to improve the clarity of the field of vision, the lead assembly can also be made of a transparent plastic material with supporting hardness. Further, as a preferred embodiment of the utility model but not a limitation, the arc-shaped design of the inner cylinder and the outer cylinder can better adapt to the natural curvature of the nerve bundle group and present a certain wrapping property, and the inner cylinder and the outer cylinder can better fit the nerve bundle group and reduce movement or sliding during the operation. Specifically, the perspective area of ​​the outer cylinder is aligned with the perspective area of ​​the inner cylinder to provide a clear surgical field of view, and medical staff can clearly observe the condition of the nerve bundle group and its surrounding tissues, which is helpful to perform nerve suturing operations more accurately.

[0095] Specifically, the positioning part and the matching part are connected by a connecting rod, and the positioning part and the matching part are arranged relative to each other. Medical staff can use the auxiliary part to operate the connection between the matching part and the locking part to achieve locking and unlocking of the inner and outer cylinders, and can also use the auxiliary part to control the position of the positioning part in the positioning groove to achieve the fixation of the outer cylinder. Such a setting not only simplifies the operation steps, but also improves the efficiency of the operation.

[0096] like Figure 2 , Figure 10 to Figure 11A nerve suturing device is shown, wherein the first inner cylinder cavity 310 and / or the second inner cylinder cavity 320 are provided with a plurality of limiting hooks 5 for limiting the position of blood vessels or tissues, wherein the limiting hooks 5 include a limiting hook connection portion 51 connected to the inner wall of the inner cylinder cavity 300, and a hook body 52 connected to the limiting hook connection portion 51 and extending in a direction away from the limiting hook connection portion 51, and the inner cylinder cavity 300 is provided with an inner cylinder connection end 302 for fixing the limiting hook connection portion 51. The utility model can be conveniently combined and placed in the suturing area or removed by the detachably connected first inner cylinder and second inner cylinder, the setting of the guide groove ensures the stability of the suturing area and reduces the complexity of the wire operation, and the setting of the limiting hook in the cavity effectively solves the problem of easy sliding displacement of blood vessels or tissues in the nerve suturing operation, thereby improving the stability and success rate of the operation. The cross-sections of the first inner cylinder and the second inner cylinder are both arranged in an arc shape, and the plurality of limiting hooks 5 are evenly arranged along the inner wall of the inner cylinder cavity 300. Further, as a preferred embodiment of the present invention but not a limitation, the first inner cylinder and the second inner cylinder form a relatively closed and stable operating environment, the arc-shaped first inner cylinder and the second inner cylinder can better adapt to the surgical area, so that the contact between the device and the tissue structure to be sutured is more fitted, the arc-shaped surface is less oppressive and damaging to the surrounding tissues than the acute angle or plane, and the arc-shaped cross-section helps to distribute the pressure more evenly, avoids tissue damage caused by excessive local pressure, and helps to protect fragile blood vessels and nerve tissues. Furthermore, the evenly arranged limit hooks can fix the blood vessels or tissues in an all-round and balanced manner during the suturing process to prevent them from sliding and falling out. Optionally, in some embodiments, the limit hooks can help fix the blood vessels and nerve tissues, thereby promoting the accurate connection of nerves during the operation. With the help of the limit hooks, medical staff can more easily control and operate the tissues to be sutured, reducing the difficulty and risk of operation during the operation.

[0097] Furthermore, as a preferred embodiment of the present invention but not a limitation, by connecting the connecting part to the inner wall of the inner tube cavity, it can be ensured that the limiting hook maintains a stable position and angle during the operation, reducing the risk of deformation or damage of the limiting hook due to operation or tissue movement, and also enabling the limiting hook to achieve a more reliable fixation and limiting effect, preventing blood vessels or tissues from sliding or shifting during the suturing process.

[0098] Specifically, the hook body extends away from the limit hook connection part and forms a protruding structure, which can firmly hook the edge of the blood vessel or tissue. The hook body enables the limit hook to effectively limit the movement of the blood vessel or tissue, thereby improving the stability and success rate of the operation. Of course, the hook body is small in size and does not cause damage to the blood vessel or tissue, and will not cause surface bleeding or large-area tearing.

[0099] Optionally, in some embodiments, the inner tube connecting end and the limiting hook connecting part can be connected by means of threads, snaps, or fasteners. The inner tube connecting end can be a mechanical structure, or a connecting groove, or a matching area. Of course, it can also be achieved by welding, hot melting, bonding, or one-piece injection molding, thereby ensuring that the limiting hook will not accidentally fall off or shift during the operation.

[0100] like Figures 1 to 7 In the nerve suturing device shown, the limiting hook 5 is arranged along the circumference of the inner cylinder cavity 300, and the barbed end of the hook body 52 extends and bends toward the center of the inner cylinder cavity 300, and / or, the limiting hook 5 is arranged along the axial direction of the inner cylinder cavity 300, and the barbed end of the hook body 52 extends and bends toward the center of the inner cylinder cavity 300. Optionally, in some embodiments, the limiting hook can adapt to nerve bundles of different shapes, diameters, and lengths.

[0101] Specifically, the limiting hooks are arranged along the circumferential direction of the inner cylinder cavity, so that the blood vessel or tissue can be evenly supported and fixed in the circumferential direction, thereby avoiding rotation or twisting during the suturing process. The limiting hooks are arranged along the axial direction of the inner cylinder cavity. This can ensure that the blood vessel or tissue is stably positioned in the axial direction, preventing the blood vessel or tissue from slipping when the wire is pushed or pulled.

[0102] In addition, the barbed end of the hook body extends and bends toward the center of the inner tube cavity, which helps to provide an inward fixing force, more effectively captures and fixes the tissue to be treated, further enhances the contact area and friction with the blood vessel or tissue, and prevents the blood vessel or tissue from escaping from the inner tube cavity. Since the barbed end is bent inward, the sharp edge of the tissue contact is avoided, reducing damage to the tissue.

[0103] The limiting hook 5 includes a first inner cylinder limiting hook 501 respectively arranged along the circumference of the first inner cylinder inner cavity 310 and the axial direction of the first inner cylinder inner cavity 310, and the barbed end of the hook body 52 of the first inner cylinder limiting hook 501 extends and bends toward the second inner cylinder 32. Further, as a preferred embodiment of the utility model but not a limitation, by simultaneously arranging limiting hooks in the circumference and axial directions of the inner cavity of the first inner cylinder, the nerve bundle group can be fixed and limited in all directions, the circumferential limiting hook can prevent the nerve bundle group from sliding in the circumferential direction, and the axial limiting hook can prevent the nerve bundle group from moving in the axial direction, and the all-round fixing method improves the stability of the nerve bundle group during the suturing process.

[0104] Specifically, the barbed end of the hook body of the first inner cylinder limit hook extends and bends toward the second inner cylinder. This design enables the hook body to fit more closely and hook the nerve bundle group, further enhancing the fixation effect. The barbed end increases the friction between the hook body and the nerve bundle group and reduces sliding, and also reduces the doctor's operating difficulty and physical exertion during the operation, which helps to improve the efficiency and success rate of the operation and reduce the operation time.

[0105] The limiting hook 5 includes a second inner cylinder limiting hook 502 respectively arranged along the circumference of the second inner cylinder inner cavity 320 and the axial direction of the second inner cylinder inner cavity 320, and the barbed end of the hook body 52 of the second inner cylinder limiting hook 502 extends and bends toward the first inner cylinder 31. Further, as a preferred embodiment of the utility model but not a limitation, the circumferentially arranged second inner cylinder limiting hooks are evenly distributed along the circumference of the second inner cylinder inner cavity, and the barbed end of the hook body is bent toward the first inner cylinder. This design forms a closed embracing structure with the circumferential limiting hook of the first inner cylinder, fixing the nerve or blood vessel tissue from all directions around to prevent displacement in any direction. The axially arranged second inner cylinder limiting hook is arranged along the axial direction of the second inner cylinder inner cavity, and the barbed end is also bent toward the first inner cylinder, which strengthens the fixation of the surgical area in the length direction, ensures that the nerve or blood vessel will not slip due to axial pressure or operation during the suturing process, and improves the continuity and accuracy of the operation. By arranging limiting hooks distributed along the circumferential direction and the axial direction in the inner cavity of the second inner cylinder, bidirectional stable fixation of the nerve bundle group or tissue can be achieved, thereby greatly improving the stability during the operation.

[0106] Specifically, the barbed end of the hook body of the second inner cylinder limit hook extends and bends toward the first inner cylinder, and this design enables the hook body to fit more closely and hook the nerve bundle group or tissue. The barbed end design increases the contact area and friction with the nerve bundle group or tissue, thereby further enhancing the fixation effect.

[0107] Additionally, in some embodiments, the second inner cylinder limit hook cooperates with the first inner cylinder limit hook to form a closed stable circle in the horizontal direction and to build a strong support system in the vertical direction. The double fixation provides stability and controllability for the nerve suturing operation. The utility model not only improves the precision of the operation and the efficiency of the operation, but also improves the stability and safety of the nerve suturing operation, greatly reduces the risk of the operation, and ensures the safety of the patient's operation.

[0108] The cross section of the limit hook 5 is T-shaped, and the hook body 52 is J-shaped. Further, as a preferred embodiment of the present invention but not a limitation, the T-shaped cross section allows the limit hook to have a wider base at the part in contact with the inner wall of the inner cylinder cavity, increasing the contact area between the limit hook and the inner cylinder cavity, so that it is more stable when fixed and not easy to rotate or fall off. At the same time, the T-shaped cross section provides an additional mechanical locking or snapping function during installation, which facilitates the fixation of the limit hook.

[0109] Furthermore, as a preferred embodiment of the present invention but not a limitation, the J-shaped hook body is designed to first extend horizontally and then bend downward to form a barbed end. The hook body can firmly grasp the tissue in a minimally invasive manner, and the curved design at the end can naturally conform to and fit the contour of the blood vessel or nerve, thereby ensuring sufficient fixation strength and avoiding unnecessary compression or damage to the tissue. The J-shaped hook body is also smoother when released, reducing the risk of tissue damage.

[0110] The limiting hooks 5 are arranged in 8 groups along the circumference of the inner cylinder cavity 300, and the limiting hooks 5 are arranged in 4 groups along the axial direction of the inner cylinder cavity 300. Further, as a preferred embodiment of the utility model but not a limitation, the 8 groups of limiting hooks evenly distributed circumferentially can provide 360-degree all-round fixation for the surgical area, which helps to prevent the rotation or twisting of the tissue in the circumferential direction, thereby maintaining a stable suturing environment. The setting of 8 groups not only ensures the stability, but also avoids excessively dense clamping of the tissue, reducing the potential risk of tissue damage. The 4 groups of limiting hooks in the axial direction provide stable support in the length direction of the inner cylinder cavity, especially in the long suture path of the nerve or blood vessel, which helps to prevent the tissue from sliding back and forth when pushing or pulling out the wire, and maintains the precise alignment of the surgical area. Combining the circumferential and axial limiting hook layouts, it is possible to achieve three-dimensional stable fixation of nerve or blood vessel tissue, which not only improves the accuracy and success rate of the operation, but also shortens the operation time and reduces the risk of surgery.

[0111] Specifically, through the cooperation of the first inner cylinder connection part and the second inner cylinder connection part, the required cavity structure can be quickly and accurately assembled to enclose a closed inner cylinder cavity for accommodating and fixing the tissue to be sutured, preventing body fluids and tissue fragments from overflowing into the surrounding tissues, and preventing the separation or deformation of the first inner cylinder and the second inner cylinder due to external forces during the operation. Medical staff can quickly put the nerve bundle group into the inner cylinder cavity for fixation and suturing, thereby shortening the operation time and improving the operation efficiency. After the operation, the medical staff can quickly disassemble the first inner cylinder and the second inner cylinder, which is conducive to the inspection and subsequent treatment of the surgical area, and is also convenient for the storage and management of the suturing device. Optionally, in some embodiments, the first inner cylinder connection end and the second inner cylinder connection end can be connected by a buckle connection, a threaded connection, a fastener connection, a mortise and tenon connection, a groove connection, or a magnetic connection.

[0112] Further, in an embodiment of the utility model, there are 4 positioning grooves arranged circumferentially on the inner tube and / or the outer tube, that is, 4 on the left side of the outer tube, 4 on the right side of the outer tube, 4 on the left side of the inner tube, and 4 on the right side of the inner tube. There are 8 first connecting ends of the outer tube along the inner circumference of the first outer tube, 8 first connecting ends of the outer tube along the inner circumference of the second outer tube, 8 first connecting ends of the inner tube along the outer circumference of the first inner tube, and 8 first connecting ends of the inner tube along the inner circumference of the second outer tube. There is 1 guide groove for the outer tube, and 8 guide grooves for the inner tube. The outer tube can be rotated 45 degrees relative to the inner tube, and then suture can be performed in the surgical area. After suturing is completed, the outer tube can be rotated 45 degrees relative to the inner tube again for suturing again, until suturing is completed in the 360-degree direction of the nerve bundle group, and medical staff do not need to adjust the position of the operation multiple times.

[0113] The first inner cylinder connection part 311 is a clamping part protruding toward the second inner cylinder connection part 321, and the second inner cylinder connection part 321 is a connecting groove for the clamping part to extend into. The first inner cylinder connection part 311 and the second inner cylinder connection part 321 are provided with a plurality of them and correspond to each other. The inner cylinder wire guide groove 301 includes a first inner cylinder wire guide groove 3011 located in the first inner cylinder 31 and a second inner cylinder wire guide groove 3012 located in the second inner cylinder 32. The first inner cylinder wire guide groove 3011 is located between two adjacent first inner cylinder connection parts 311, and the second inner cylinder wire guide groove 3012 is located between two adjacent second inner cylinder connection parts 321. Further, as a preferred embodiment of the present invention but not limited thereto, the cooperation between the clamping part and the connecting groove ensures the stability and sealing of the first inner cylinder and the second inner cylinder after being connected, so as to prevent accidental separation during surgery. At the same time, the first inner cylinder connection part and the second inner cylinder connection part are provided with multiple and one-to-one correspondence, which further enhances the stability of the connection and enables the first inner cylinder and the second inner cylinder to be connected at multiple points, thereby dispersing stress and reducing the risk of breakage caused by single-point connection. The layout of the first inner cylinder guide groove and the second inner cylinder guide groove not only facilitates the introduction and extraction of surgical sutures, but also avoids interference or damage to the sutures at the connection. Medical staff can easily pass the sutures through the guide grooves, thereby quickly completing the suturing operation, which helps to more smoothly connect and sew the nerve bundle group during the operation, reduce the operation time, and improve the success rate of the operation.

[0114] like Figures 1 to 14 As shown, the implementation method of Example 1 is as follows:

[0115] A nerve suturing device comprises a main body 1 and a lead assembly 2, wherein the main body 1 comprises an inner cylinder 3, and an outer cylinder 4 connected to the outside of the inner cylinder 3 and rotatable relative to the inner cylinder 3, the lead assembly 2 is provided with a lead channel 200 which can be communicated with the inner cylinder 3, and a lead port 45 for suture wire to enter the lead channel 200, the inner cylinder 3 is provided with an inner cylinder first connecting end 30, an inner cylinder cavity 300, and an inner cylinder lead groove 301 communicated with the inner cylinder cavity 300, the inner cylinder lead groove 301 is used for allowing the lead assembly 2 to extend into the inner cylinder cavity 300, the outer cylinder 4 is provided with an outer cylinder first connecting end 40 which cooperates with the inner cylinder first connecting end 30, and an outer cylinder lead groove 401 which communicates with the inner cylinder lead groove 301, after the outer cylinder 4 rotates relative to the inner cylinder 3, the inner cylinder first connecting end 30 and the outer cylinder first connecting end 40 cooperate so that the outer cylinder 4 remains fixed relative to the inner cylinder 3. The inner tube 3 and the outer tube 4 are both made of transparent material.

[0116] The inner cylinder 3 comprises a first inner cylinder 31 and a second inner cylinder 32 which are detachably connected, and the first connecting end 30 of the inner cylinder is arranged outside the first inner cylinder 31 and the second inner cylinder 32. The outer cylinder 4 comprises a first outer cylinder 41 and a second outer cylinder 42 which are detachably connected, and the first connecting end 40 of the outer cylinder is arranged inside the first outer cylinder 41 and / or the second outer cylinder 42. The cross sections of the first inner cylinder 31 and the second inner cylinder 32 are both arranged in an arc shape, and the cross sections of the first outer cylinder 41 and the second outer cylinder 42 are both arranged in an arc shape.

[0117] The first connecting end 40 of the outer cylinder is in the form of a raised tooth, and the first connecting end 30 of the inner cylinder is in the form of a groove and matches with the raised tooth of the first connecting end 40 of the outer cylinder. The first inner cylinder 31 is provided with a first inner cylinder cavity 310 and a first inner cylinder connecting portion 311, the second inner cylinder 32 is provided with a second inner cylinder cavity 320 and a second inner cylinder connecting portion 321 matching with the first inner cylinder connecting portion 311, the first inner cylinder cavity 310 and the second inner cylinder cavity 320 are enclosed to form an inner cylinder cavity 300, the inner cylinder guide groove 301 is provided on the first inner cylinder 31 and the second inner cylinder 32, and the outer cylinder guide groove 401 is provided on the first outer cylinder 41 and the second outer cylinder 42.

[0118] When the first outer cylinder 41 rotates relative to the second outer cylinder 42 around the horizontally arranged rotating shaft 7, the first inner cylinder 31 and the second inner cylinder 32 are connected in the horizontal direction. When the first outer cylinder 41 rotates relative to the second outer cylinder 42 around the horizontally arranged rotating shaft 7 and is in an unlocked state, the first inner cylinder 31 and the second inner cylinder 32 are smoothly connected or separated in the horizontal direction. By operating the opening and closing of the outer cylinder 4, medical staff can easily connect or separate the first inner cylinder 31 and the second inner cylinder 32 of the inner cylinder 3 without the need for additional tools or complicated operation steps.

[0119] The lead assembly 2 includes a first lead tube 21 and a second lead tube 22 that are detachably connected. The first lead tube 21 and the second lead tube 22 are arranged in an arc shape. The first lead tube 21 is provided with a first lead tube connection end 211, and the second lead tube 22 is provided with a second lead tube connection end 221. The first lead tube connection end 211 cooperates with the second lead tube connection end 221 to connect the first lead tube 21 and the second lead tube 22. The upper end surfaces of the first lead tube 21 and the second lead tube 22 are provided with a wire outlet groove 8. The wire outlet groove 8 is an opening located at the upper end surfaces of the first lead tube 21 and the second lead tube 22 at the same time. The shape of the wire outlet groove 8 is an arc shape.

[0120] The first lead tube 21 is provided with a first lead tube cavity 210, and the second lead tube 22 is provided with a second lead tube cavity 220. The first lead tube connection end 211 is located at one end of the first lead tube 21, and the second lead tube connection end 221 is located at one end of the second lead tube 22. The lead opening 45 includes a first lead opening 451 located at the other end of the first lead tube 21, and a second lead opening 452 located at the other end of the second lead tube 22. The first lead tube connection end 211 and the second lead tube connection end 221 are arranged opposite to each other. The outer diameter of the first lead tube cavity 210 is larger than the outer diameter of the second lead tube connection end 221. The second lead tube connection end 221 can extend into or out of the first lead tube cavity 210. The first lead tube 21 and the second lead tube 22 are provided with a lead tube abutting end 23, the outer tube 4 is provided with an outer tube abutting surface 43 that cooperates with the lead tube abutting end 23 to limit the position, the first lead tube 21 and the second lead tube 22 are also provided with a clamping portion 24, the lead tube abutting end 23 is located at the bottom of the clamping portion 24, the outer tube abutting surface 43 is close to the peripheral side of the outer tube lead groove 401, and the clamping portion 24 is provided with a clamping portion connection hole 241 for external objects to cooperate and connect. The inner side of the outer tube lead groove is provided with an outer tube second connection groove 402 for the wire to pass through, the outer tube lead groove 401 is arranged in the horizontal direction, and the outer tube second connection groove 402 is connected to the outer tube lead groove 401 and is arranged in the vertical direction. The clamping portion connection hole 241 includes a first clamping portion connection hole 2411 and a second clamping portion connection hole 2412. A first positioning block 212 is provided on the outer side of the first lead tube 21, and the inner tube lead groove 301 is provided with a first positioning end 3011 that cooperates with the first positioning block 212; a second positioning block 222 is provided on the outer side of the second lead tube 22, and the inner tube lead groove 301 is provided with a second positioning end 3012 that cooperates with the second positioning block 222.

[0121] In this embodiment, the first lead tube 21 and the second lead tube 22 do not contact the nerve bundle group. When the medical staff lifts the first lead tube 21 and the second lead tube 22 upward at the same time, the first lead tube connection end 211 and the second lead tube connection end 221 are separated, and the length of the channel formed between the first lead tube 21 and the second lead tube 22 increases. The suture wire enters from the first lead wire opening 451, and the suture wire can enter the inner tube cavity 300 from the gap between the first lead tube connection end 211 and the second lead tube connection end 221. After the suture wire pierces the separated left nerve bundle group and then pierces the separated right nerve bundle group, it passes out from the second lead wire opening 452.

[0122] The utility model provides a guide wire assembly 2 to make the introduction of the suture wire smoother and more accurate. The suture wire enters the surgical area in the inner cylinder cavity 300 through a provided channel, thereby more accurately controlling the puncture depth of the suture wire and reducing the operating error and burden of the medical staff. By rotating the outer cylinder 4, the medical staff can adjust the introduction angle of the suture wire to adapt to the suturing requirements of different positions and directions, effectively improving the stability and efficiency of the operation.

[0123] Example 2

[0124] The difference between Example 2 and Example 1 is that the lower end surface of the first lead tube 21 and / or the second lead tube 22 is provided with a threading groove. The threading groove is an opening located at the lower end surface of the first lead tube 21 and the second lead tube 22. After the suture wire passes through the interior of the lead assembly 2, it enters the inner cylinder cavity 300 through the threading groove. The threading groove corresponds to the wire outlet groove 8, so that the wire can smoothly pass into and out of the inner cylinder cavity 300. The threading groove is arc-shaped. During the operation, the medical staff can pass one end of the suture wire into the interior of the first lead tube 21 or the second lead tube 22, and then pass through the threading groove through the interior of the inner cylinder cavity 300 to suture the nerve bundle group.

[0125] Example 3

[0126] Embodiment 3, based on Embodiment 1, further has the following implementation mode: the first outer cylinder 41 is provided with a first outer cylinder connection end 411, a block 412, the second outer cylinder 42 is provided with a second outer cylinder connection end 421, a locking portion 422, the first outer cylinder connection end 411 and the second outer cylinder connection end 421 cooperate to allow the rotation shaft 7 to pass through, so that the first outer cylinder 41 rotates relative to the second outer cylinder 42 around the rotation shaft 7, the locking portion 422 abuts against or disengages from the block 412, so that the outer cylinder 4 can switch between a locked state and an open state. It also includes an auxiliary member 6 that cooperates with the main body 1, and the auxiliary member 6 includes a matching member 61 that cooperates with the locking portion 422. The locking portion 422 is provided with a connecting groove 4221, and the matching member 61 is provided with a convex block 611 that cooperates with the connecting groove 4221. The second outer tube 42 is provided with a fixing groove 4222 for fixing the locking portion 422, and a limiting groove 4223 which is communicated with the fixing groove 4222 and for the clamping block 412 to extend into. The locking portion 422 is provided with a locking limiting end 4224, and the clamping block 412 is provided with a clamping block abutting end 4121 which cooperates with the locking limiting end 4224.

[0127] The locking portion 422 is arranged in an arc shape and is provided with a locking portion groove 4225 for the locking block abutting end 4121 to extend into, the locking limit end 4224 is located at one end of the locking portion groove 4225, the locking block 412 is provided with a locking block mating surface 4122 for the locking limit end 4224 to extend into, and the locking block 412 is C-shaped.

[0128] The outer sides of the outer tube 4 and the inner tube 3 are provided with positioning grooves 430, and the auxiliary member 6 includes a positioning portion 80 matched with the positioning groove 430, and the positioning portion 80 is used to limit the sliding of the outer tube 4 and the inner tube 3. The cross section of the positioning groove 430 is circular. The positioning portion 80 is a cylinder matched with the circular positioning groove 430. The inner tube 3 and the outer tube 4 are both arranged in an arc shape and provided with a perspective area, and the auxiliary member 6 also includes a connecting rod 90 connected between the positioning portion 80 and the matching member 61.

[0129] The first outer tube 41 is provided with a positioning groove 430 of the first outer tube 41 on both sides along the axial direction, and the second outer tube 42 is provided with a positioning groove 430 of the second outer tube 42 on both sides along the axial direction. An inclination angle of 22.5 degrees is provided between the positioning groove 430 of the first outer tube 41 and the central axis of the outer tube 4, and an inclination angle of 22.5 degrees is provided between the positioning groove 430 of the second outer tube 42 and the central axis of the outer tube 4. The positioning groove 430 of the first outer tube 41 and the positioning groove 430 of the second outer tube 42 at the same height position are arranged in an eight-shaped shape.

[0130] Example 4

[0131] Example 4, based on Example 1, further has the following implementation manner: the first inner cylinder lumen 310 and / or the second inner cylinder lumen 320 are provided with a plurality of limiting hooks 5 for limiting the position of blood vessels or tissues, the limiting hooks 5 include a limiting hook connection portion 51 connected to the inner wall of the inner cylinder cavity 300, and a hook body 52 connected to the limiting hook connection portion 51 and extending in a direction away from the limiting hook connection portion 51, and the inner cylinder cavity 300 is provided with an inner cylinder connection end 302 for fixing the limiting hook connection portion 51. The cross-sections of the first inner cylinder 31 and the second inner cylinder 32 are both arranged in an arc shape, and the plurality of limiting hooks 5 are evenly arranged along the inner wall of the inner cylinder cavity 300.

[0132] The limiting hook 5 is arranged along the circumference of the inner cylinder cavity 300, and the barbed end of the hook body 52 extends and bends toward the center direction of the inner cylinder cavity 300, and / or the limiting hook 5 is arranged along the axial direction of the inner cylinder cavity 300, and the barbed end of the hook body 52 extends and bends toward the center direction of the inner cylinder cavity 300.

[0133] The limiting hook 5 includes a first inner cylinder limiting hook 501 which is respectively arranged along the circumferential direction of the first inner cylinder inner cavity 310 and the axial direction of the first inner cylinder inner cavity 310, and the barbed end of the hook body 52 of the first inner cylinder limiting hook 501 extends and bends toward the second inner cylinder 32. The limiting hook 5 includes a second inner cylinder limiting hook 502 which is respectively arranged along the circumferential direction of the second inner cylinder inner cavity 320 and the axial direction of the second inner cylinder inner cavity 320, and the barbed end of the hook body 52 of the second inner cylinder limiting hook 502 extends and bends toward the first inner cylinder 31.

[0134] The cross section of the limiting hook 5 is T-shaped, and the hook body 52 is J-shaped. Eight groups of the limiting hooks 5 are arranged along the circumference of the inner cylinder cavity 300 , and four groups of the limiting hooks 5 are arranged along the axial direction of the inner cylinder cavity 300 .

[0135] The first inner cylinder connection part 311 is a clamping part protruding toward the second inner cylinder connection part 321, and the second inner cylinder connection part 321 is a connecting groove for the clamping part to extend into. The first inner cylinder connection part 311 and the second inner cylinder connection part 321 are each provided with a plurality of and one-to-one correspondence. The inner cylinder lead groove 301 includes a first inner cylinder lead groove 3011 located in the first inner cylinder 31, and a second inner cylinder lead groove 3012 located in the second inner cylinder 32. The first inner cylinder lead groove 3011 is located between two adjacent first inner cylinder connection parts 311, and the second inner cylinder lead groove 3012 is located between two adjacent second inner cylinder connection parts 321.

[0136] Example 5

[0137] The difference between Example 5 and Example 1 is that: the first inner cylinder 31 also includes a first upper inner cylinder 3101 and a first lower inner cylinder 3102, the first upper inner cylinder 3101 and the first lower inner cylinder 3102 are enclosed to form a first inner cylinder inner cavity 310, and the second inner cylinder 32 also includes a second upper inner cylinder 3201 and a second lower inner cylinder 3202, the second upper inner cylinder 3201 and the second lower inner cylinder 3202 are enclosed to form a second inner cylinder inner cavity 320. The first lead tube 21 and the second lead tube 22 extend from top to bottom to one-third of the inner cavity respectively and are inserted into and contacted with the separated left nerve bundle group and the right nerve bundle group. The suture wire enters from the first lead port 451, pierces the separated left nerve bundle group and then the separated right nerve bundle group, and then passes out from the second lead port 452. When the medical staff lifts up one end of the first lead tube 21 and the second lead tube 22 at the same time, the first lead tube connecting end 211 and the second lead tube connecting end 221 are separated. At this time, the suture wire still remains on the nerve bundle group. The medical staff repeats the above steps and sutures the nerve bundle group multiple times.

Claims

1. A nerve suturing device, comprising a main body (1) and a lead assembly (2), characterized in that: The main body (1) comprises an inner cylinder (3), and an outer cylinder (4) connected to the outside of the inner cylinder (3) and rotatable relative to the inner cylinder (3); the guide wire assembly (2) is provided with a guide wire channel (200) which can be communicated with the inner cylinder (3), and a guide wire port (45) for the suture wire to enter the guide wire channel (200); the inner cylinder (3) is provided with an inner cylinder first connection end (30), an inner cylinder cavity (300), and an inner cylinder guide wire groove (301) which is communicated with the inner cylinder cavity (300); the inner cylinder guide wire groove (301) is used for allowing the lead assembly (2) to extend into the inner cylinder cavity (300), and the outer cylinder (4) is provided with an outer cylinder first connection end (40) cooperating with the inner cylinder first connection end (30), and an outer cylinder lead groove (401) connected with the inner cylinder lead groove (301), and after the outer cylinder (4) rotates relative to the inner cylinder (3), the inner cylinder first connection end (30) and the outer cylinder first connection end (40) cooperate to keep the outer cylinder (4) fixed relative to the inner cylinder (3).

2. A nerve suturing device according to claim 1, characterized in that: The inner cylinder (3) comprises a first inner cylinder (31) and a second inner cylinder (32) which are detachably connected, and the first connecting end (30) of the inner cylinder is arranged on the outside of the first inner cylinder (31) and / or the second inner cylinder (32); the outer cylinder (4) comprises a first outer cylinder (41) and a second outer cylinder (42) which are detachably connected, and the first connecting end (40) of the outer cylinder is located on the inside of the first outer cylinder (41) and / or the second outer cylinder (42).

3. A nerve suturing device according to claim 2, characterized in that: The first inner cylinder (31) is provided with a first inner cylinder inner cavity (310) and a first inner cylinder connecting portion (311); the second inner cylinder (32) is provided with a second inner cylinder inner cavity (320) and a second inner cylinder connecting portion (321) matched with the first inner cylinder connecting portion (311); the first inner cylinder inner cavity (310) and the second inner cylinder inner cavity (320) are enclosed to form an inner cylinder cavity (300); the inner cylinder guide groove (301) is provided on the first inner cylinder (31) and / or the second inner cylinder (32); and the outer cylinder guide groove (401) is provided on the first outer cylinder (41) and / or the second outer cylinder (42).

4. A nerve suturing device according to claim 1, characterized in that: The lead assembly (2) comprises a first lead tube (21) and a second lead tube (22) which are detachably connected. The first lead tube (21) and the second lead tube (22) are arranged in an arc shape. The first lead tube (21) is provided with a first lead tube connecting end (211), and the second lead tube (22) is provided with a second lead tube connecting end (221). The first lead tube connecting end (211) cooperates with the second lead tube connecting end (221) so that the first lead tube (21) and the second lead tube (22) are connected. The upper end surface of the first lead tube (21) and / or the second lead tube (22) is provided with a wire outlet groove (8).

5. A nerve suturing device according to claim 4, characterized in that: The first lead tube (21) is provided with a first lead tube cavity (210), the second lead tube (22) is provided with a second lead tube cavity (220), the first lead tube cavity (210) and the second lead tube cavity (220) are enclosed to form the lead channel (200), the first lead tube connection end (211) is located at one end of the first lead tube (21), the second lead tube connection end (221) is located at one end of the second lead tube (22), and the lead opening (45) includes The invention comprises a first lead wire opening (451) located at the other end of the first lead wire tube (21), and a second lead wire opening (452) located at the other end of the second lead wire tube (22); the first lead wire connecting end (211) and the second lead wire connecting end (221) are arranged opposite to each other; the outer diameter of the first lead tube cavity (210) is larger than the outer diameter of the second lead tube connecting end (221); and the second lead tube connecting end (221) can extend into or out of the first lead tube cavity (210).

6. A nerve suturing device according to claim 4, characterized in that: The first lead tube (21) and / or the second lead tube (22) is provided with a lead tube abutting end (23), the outer tube (4) is provided with an outer tube abutting surface (43) which cooperates with and limits the lead tube abutting end (23), the first lead tube (21) and / or the second lead tube (22) is also provided with a clamping portion (24), the lead tube abutting end (23) is located at the bottom of the clamping portion (24), the outer tube abutting surface (43) is close to the peripheral side of the outer tube lead groove (401), and the clamping portion (24) is provided with a clamping portion connecting hole (241) for the connection of an external object.

7. A nerve suturing device according to claim 3, characterized in that: The first inner cylinder (31) further comprises a first upper inner cylinder (3101) and a first lower inner cylinder (3102), wherein the first upper inner cylinder (3101) and the first lower inner cylinder (3102) together form a first inner cylinder inner cavity (310), and the second inner cylinder (32) further comprises a second upper inner cylinder (3201) and a second lower inner cylinder (3202), wherein the second upper inner cylinder (3201) and the second lower inner cylinder (3202) together form a second inner cylinder inner cavity (320).

8. A nerve suturing device according to claim 2, characterized in that: The first outer cylinder (41) is provided with a first outer cylinder connecting end (411) and a clamping block (412); the second outer cylinder (42) is provided with a second outer cylinder connecting end (421) and a locking portion (422); the first outer cylinder connecting end (411) and the second outer cylinder connecting end (421) cooperate to allow the rotation shaft (7) to pass through, so that the first outer cylinder (41) rotates around the rotation shaft (7) relative to the second outer cylinder (42); the locking portion (422) abuts against or disengages from the clamping block (412), so that the outer cylinder (4) can be switched between a locked state and an open state.

9. A nerve suturing device according to claim 3, characterized in that: The first inner cylinder lumen (310) and / or the second inner cylinder lumen (320) are provided with a plurality of limiting hooks (5) for limiting the position of blood vessels or tissues, the limiting hooks (5) comprising a limiting hook connecting portion (51) connected to the inner wall of the inner cylinder cavity (300), and a hook body (52) connected to the limiting hook connecting portion (51) and extending in a direction away from the limiting hook connecting portion (51), and the inner cylinder cavity (300) is provided with an inner cylinder connecting end (302) for fixing the limiting hook connecting portion (51).

10. A nerve suturing device according to claim 9, characterized in that: The limiting hook (5) is arranged along the circumference of the inner cylinder cavity (300), and the barbed end of the hook body (52) extends and bends toward the center of the inner cylinder cavity (300); and / or the limiting hook (5) is arranged along the axial direction of the inner cylinder cavity (300), and the barbed end of the hook body (52) extends and bends toward the center of the inner cylinder cavity (300).

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