Automatic locking fascia thread trapper

Abstract

The utility model discloses an automatic locking fascia thread trapper which comprises a push rod assembly, a needle tube assembly and a thread clamping needle, the needle tube assembly comprises a needle tube and a fixing device which are connected with each other, the thread clamping needle is movably arranged in the needle tube, a cavity matched with the push rod assembly is arranged in the fixing device, and the push rod assembly is arranged in the cavity. The push rod assembly is movably arranged in the fixing device and is in driving connection with the thread clamping needle, the fixing device is provided with at least one stop groove, and the stop groove is communicated with a cavity in the fixing device; the push rod assembly is provided with at least one stop block, and the stop block is configured to be matched with the stop groove and can be matched with the stop groove to form a limiting structure. According to the fascia thread trapper, the stop block arranged on the push rod assembly is matched with the stop groove formed in the needle tube assembly, so that when the push rod assembly moves in the needle tube assembly, the push rod assembly is effectively stopped, the push rod assembly is prevented from being popped out of the needle tube assembly, and the fascia thread trapper works stably.

Description

Technical Field

[0001] The utility model relates to the technical field of fascia suturing, in particular to a fascia wire clamp which has a simple structure, is convenient for assembly and disassembly, and can automatically stop and lock. Background Art

[0002] Currently, with the continuous development and progress of medical technology, medical technology is constantly shifting towards reducing patient pain and minimally invasive surgery, which allows patients to reduce treatment time in medical institutions, reduce the area of ​​trauma, and recover faster after surgery.

[0003] During the operation of minimally invasive surgery, it is necessary to puncture a certain part of the patient's body to establish a channel. Abdominal wall perforations larger than a certain size require suturing of the fascia and fascia layers to effectively reduce the large amount of blood loss at the channel location during surgery. At the same time, suturing of the fascia is the key to preventing incisional hernia.

[0004] Traditional fascia clamps such as Figure 1a and Figure 1b As shown, when the push rod assembly 1' is pushed forward and moved in the needle tube assembly 2', it drives the thread clamping needle 3' to extend out of the needle tube assembly 2' to hook the thread. The cylindrical pin 4' provided on the push rod assembly 1' is fixed in the stop hole 5' of the needle tube assembly 2' to limit the push rod assembly 1' from flying out under the action of the rebound force of the spring 6'. However, due to the short length of the cylindrical pin, which is usually only 3mm in length and 1mm in diameter, the cooperation between the cylindrical pin and the stop hole is prone to positioning deviation, the production and assembly process is difficult, and it is difficult to align and assemble, resulting in low production efficiency. At the same time, the stop effect of the push rod assembly is unstable, causing the thread clamping needle to retract into the needle tube assembly, and the fascia thread clamp works unstably, reducing the efficiency of the operation.

[0005] Therefore, how to make the stop device of the fascia thread clamp easy to assemble and effectively stop the push rod assembly to prevent the push rod assembly from popping out of the needle tube assembly so that the fascia thread clamp can work stably has become an urgent problem to be solved in this field. Utility Model Content

[0006] In view of the defects of the prior art, the purpose of the utility model is to provide an automatic locking fascia wire clamp which is simple to assemble, can effectively stop the push rod assembly, and has stable operation.

[0007] In order to achieve the above-mentioned purpose, the automatic locking fascia thread clamp provided by the utility model comprises a push rod assembly, a needle tube assembly and a thread clamp needle, wherein the needle tube assembly comprises a needle tube and a fixing device connected to each other, the thread clamp needle is movably arranged in the needle tube, a cavity adapted to the push rod assembly is provided inside the fixing device, the push rod assembly is movably arranged in the fixing device, and drives the connected thread clamp needle,

[0008] At least one stop groove is provided on the fixing device, and the stop groove is communicated with the cavity in the fixing device;

[0009] At least one stop block is provided on the push rod assembly, and the stop block is configured to be compatible with the stop groove, and can be placed in the stop groove when the push rod assembly is movably arranged in the fixing device, and cooperate with the stop groove to form a limiting structure.

[0010] Furthermore, the stop block is arranged on the push rod assembly through an elastic component.

[0011] Furthermore, the stop block can form a tenon connection with both ends of the stop groove.

[0012] Furthermore, a push rod is provided on the push rod assembly, and the push rod is configured to be used for connecting a thread clamping needle.

[0013] Furthermore, the needle tube assembly also includes a wire clamp fixing tube, which is movably arranged in a connecting assembly formed by the needle tube and the fixing device, one end of the wire clamp fixing tube is connected to the wire clamp needle, and the other end is connected to the push rod assembly.

[0014] Furthermore, a sealing component is provided in the fixing device, and the sealing component forms a sealing structure between the cavity of the fixing device and the needle tube, and the sealing component also forms a dynamic seal with the wire clamp fixing tube.

[0015] Furthermore, the sealing component is a silicone block.

[0016] Furthermore, a restoring device is provided in the fixing device, and the restoring device is configured to cooperate with the push rod assembly and can be deformed synchronously with the movement of the push rod assembly in the fixing device, and a restoring force can be generated on the push rod assembly based on the deformation.

[0017] Furthermore, the return device is composed of a return spring.

[0018] Furthermore, an anti-slip device is provided on the outer side of the fixing device.

[0019] The automatic locking fascia wire clamp provided by the utility model adopts an elastic arm arranged on the push rod assembly to press the stop block so that the push rod assembly can be placed in the fixing device, and the assembly is simple. At the same time, the stop block cooperates with the stop groove arranged on the needle tube assembly, so that when the push rod assembly moves in the fixing device, the stop block moves in the stop groove and is connected with the tenon at both ends of the stop groove, so that the stop block is restricted by the stop groove, the push rod assembly is effectively stopped, and the push rod assembly is prevented from popping out of the needle tube assembly, so that the fascia wire clamp can work stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further described below in conjunction with the accompanying drawings and specific implementations.

[0021] Figure 1a It is a cross-sectional view of an existing fascia clamp;

[0022] Figure 1b It is a schematic diagram of the overall structure of the existing fascia clamp;

[0023] Figure 2 This is a schematic diagram of the overall structure of the automatic locking fascia wire clamp provided by the utility model;

[0024] Figure 3 A cross-sectional view of the automatic locking fascia wire clamp provided by the utility model;

[0025] Figure 4 and Figure 5 for Figure 3 A partial enlarged view of

[0026] Figure 6 It is a structural schematic diagram of the fixing device in the utility model;

[0027] Figure 7 It is a structural schematic diagram of the push rod assembly in the utility model.

[0028] Figure 8 and Fig. 9 This is a schematic diagram of the movement of the push rod assembly in the needle tube assembly in the utility model;

[0029] Reference numerals:

[0030] 1. Needle tube assembly; 11. Needle tube; 12. Fixing device; 13. Wire clamp fixing tube; 14. Restoring device; 15. Sealing assembly; 16. Stop groove; 161. First end; 162. Second end; 17. Flange anti-slip device;

[0031] 2. Thread clamping needle;

[0032] 3. Push rod assembly; 31. Push rod; 32. Stop block; 33. Elastic arm; 34. Push rod assembly body. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below with reference to specific illustrations.

[0034] See also Figure 2 and Figure 3 , which shows an example of the automatic locking fascia wire clamp provided by the utility model.

[0035] As can be seen from the figure, the automatic locking fascia thread clamp of this example mainly includes a needle tube assembly 1, a thread clamp needle 2 and a push rod assembly 3.

[0036] The thread clamping needle 2 is arranged in the needle tube assembly 1, and the push rod assembly 3 is arranged on the needle tube assembly 1 and is configured to be driven and connected to the thread clamping needle 2 in the needle tube assembly 1, and can drive the thread clamping needle 2 to move back and forth in the needle tube assembly 1, so that the thread clamping needle 2 switches between the extended and retracted states relative to the needle tube assembly 1.

[0037] The thread clamping needle 2 in this embodiment can adopt the structure of the existing thread clamping needle 2 when it is specifically implemented, and it will not be described in detail here.

[0038] Further integration Figure 4 and Figure 5 As shown, the needle tube assembly 1 in this example is mainly composed of a needle tube 11 and a fixing device 12.

[0039] The needle tube 11 is adapted to the thread clamping needle 2 , and can accommodate the thread clamping needle 2 movably disposed therein and move back and forth along the length direction of the needle tube 11 .

[0040] The fixing device 12 is a hollow structure as a whole, one end of which is tightly connected to the needle tube 11 and the other end is open to accommodate the push rod assembly 3 therein.

[0041] As an example, the fixing device 12 is preferably integrally formed at one end of the needle tube 11 by injection molding, which is convenient for molding and can ensure the reliability of connection with the needle tube 11.

[0042] It should be noted here that the molding method of the fixing device 12 and the connection and matching structure with the needle tube 11 are not limited thereto, and other feasible methods can be adopted as needed.

[0043] In order to enable the push rod assembly 3 to drive the thread clamping needle 2 to move in the needle tube 11 when moving in the fixing device 12, a thread clamping fixing tube 13 is provided between the thread clamping needle 2 and the push rod assembly 3, and the thread clamping needle 2 and the push rod assembly 3 are connected through the thread clamping fixing tube 13.

[0044] As a further explanation, one end of the wire clamp fixing tube 13 is placed in the needle tube 11 and connected to the wire clamp needle 2, and the other end passes through the fixing device 12 to connect to the push rod assembly 3, so that when the push rod assembly 3 moves in the fixing device 12, it can drive the wire clamp fixing tube 13 to move and at the same time drive the wire clamp needle 2 to move in the needle tube 11.

[0045] Specifically, one end of the wire clamping fixing tube 13 is connected to the wire clamping needle 2 , and the other end is integrally formed with the push rod assembly 3 , thereby ensuring the reliability of the connection between the wire clamping fixing tube 13 and the push rod assembly 3 .

[0046] As an example, one end of the wire clamp fixing tube 13 is connected to the wire clamp needle 2 in a conventional manner, and the other end is integrally formed with the corresponding push rod assembly 3 by injection molding. The injection-molded push rod assembly 3 wraps the other end of the wire clamp fixing tube 13 to ensure the reliability of the overall structure.

[0047] The push rod assembly 3 in this embodiment is movably arranged in the fixing device 12 and can move back and forth in the fixing device 12, thereby driving the thread clamping needle 2 to move in the needle tube 11 through the thread clamping fixing tube 13, so that the top end of the thread clamping needle 2 can extend from the port of the needle tube 11 or retract into the needle tube 11.

[0048] Specifically, when the push rod assembly 3 moves in the fixing device 12 toward the direction close to the needle tube 11 (i.e., facing the needle tube 11), the thread clamping needle 2 is driven to move at the port facing the needle tube 11 in the needle tube 11 through the thread clamping fixing tube 13 until the top of the thread clamping needle 2 extends out of the needle tube 11. The top of the thread clamping needle 2 extending out of the needle tube 11 opens due to the loss of the restraint of the needle tube 11 wall, forming a thread-hooking state, and can perform the thread-hooking operation;

[0049] If the push rod assembly 3 moves in the fixing device 12 in the direction away from the needle tube 11 (i.e., away from the needle tube 11), the thread clamping needle 2 is driven to move in the needle tube 11 toward the end of the needle tube 11 away from the needle tube 11 through the thread clamping fixing tube 13 until the top end of the thread clamping needle 2 is retracted into the needle tube 11. At this time, the top end of the thread clamping needle 2 retracted into the needle tube 11 is closed due to the restraint of the wall of the needle tube 11.

[0050] Since the wire clamp fixing tube 13 needs to extend from the fixing device 12 into the needle tube 11 and can move back and forth in the needle tube 11 driven by the push rod assembly 3, it is necessary to ensure the stability and reliability of the movement of the wire clamp fixing tube 13 in the needle tube 11, and at the same time, it is also necessary to ensure the sealing between the fixing device 12 and the needle tube 11 to prevent liquid from entering the inner cavity of the fixing device 12 from the needle tube 11.

[0051] To this end, in this embodiment, a corresponding sealing component 15 is provided in the fixing device 12. The sealing component 15 is specifically configured at the connection between the fixing device 12 and the needle tube 11, and overall covers and seals the port of the needle tube 11 located in the fixing device 12, as well as the connection between the needle tube 11 and the fixing device 12.

[0052] On this basis, the sealing component 15 is preferably composed of a silicone block, and a through hole is opened on the silicone block corresponding to the needle tube 11. The through hole is compatible with the wire clamp fixing tube 13, and can accommodate the wire clamp fixing tube 13 to be movably arranged therein, and the through hole is coated on the outer wall of the wire clamp fixing tube 13, and a dynamic sealing structure is formed between the outer wall of the wire clamp fixing tube 13. In this way, based on the sealing component 15 sealing the needle tube 11, the wire clamp fixing tube 13 is covered and supported and dynamically sealed, thereby ensuring the stability and reliability of the wire clamp fixing tube 13 moving in the needle tube 11, and ensuring the sealing between the fixing device 12 and the needle tube 11, preventing liquid from entering the inner cavity of the fixing device 12 from the needle tube 11.

[0053] The specific structural form of the silica gel block is not limited here and can be adaptively adjusted according to actual needs.

[0054] In order to allow the thread clamping needle 2 to extend from the needle tube 11 to complete the thread hooking operation, the push rod assembly 3 can automatically reset in the fixing device 12, thereby driving the thread clamping needle 2 to automatically retract into the needle tube 11 to improve work efficiency, this embodiment scheme is provided with a restoring device 14 in the fixing device 12, and the restoring device 14 is configured to cooperate with the push rod assembly 3, and can be deformed synchronously with the movement of the push rod assembly 3 in the fixing device 12. Based on the deformation, a restoring force can be formed on the push rod assembly 3, and the restoring force can drive the push rod assembly 3 to move and reset to the initial position in the fixing device 12, thereby driving the thread clamping needle 2 to automatically retract into the needle tube 11.

[0055] Specifically, the return device 14 is preferably composed of a return spring, one end of which abuts against the inner wall of the fixing device 12, and the other end of the return spring abuts against the push rod assembly 3; in this way, when the push rod assembly 3 moves in the fixing device 12 in the direction close to the needle tube 11 (i.e. facing the needle tube 11), the return spring 14 can be compressed synchronously, and the compressed return spring 14 will generate a return force on the push rod assembly 3. When the push rod assembly 3 loses external driving force, the return force can drive the push rod assembly 3 to move in the fixing device 12 in the direction away from the needle tube 11, thereby driving the thread clamping needle 2 to retract the needle tube 11.

[0056] Preferably, when the return device 14 formed by the return spring is set, one end thereof abuts against the silicone block 15 arranged in the fixing device 12, and the other end abuts against the push rod assembly 3; furthermore, when the push rod assembly 3 is assembled in the fixing device 12, the push rod assembly 3 will press the return device 14, so that the return device 14 is in a pre-stressed state. At that time, the return device 14 in the pre-stressed state will maintain a pressed state on the silicone block 15, thereby improving the stability and reliability of the sealing structure formed by the silicone block 15.

[0057] In order to enable the restoring force to drive the push rod assembly 3 to move in the direction away from the needle tube 11 in the fixing device 12 (i.e., reset movement), when the thread clamp needle retracts into the needle tube 11, to avoid the push rod assembly 3 from continuously transitioning backward, causing the push rod assembly 3 to be completely moved out of the fixing device 12 and affecting the normal operation of the thread clamp, a stop groove 16 is provided on the fixing device 12, and a stop block 32 matched with the stop groove 16 is provided on the push rod assembly 3. The stop groove 16 cooperates with the stop block 32 to form a limit on the moving stroke of the push rod assembly 3 in the fixing device 12, thereby ensuring the reliability of the cooperation between the push rod assembly 3 and the fixing device 12.

[0058] See also Figure 6 and Figure 7 In this embodiment, the stop groove 16 provided on the fixing device 12 is in the shape of a long groove along the axial length direction of the fixing device 12 .

[0059] In coordination therewith, the push rod assembly 3 includes a push rod assembly body 34 , the diameter of which is adapted to the cavity in the fixing device 12 , so that the push rod assembly body 34 can be movably disposed in the fixing device 12 .

[0060] Furthermore, a push rod 31 extends from the end of the push rod assembly body 34, and the push rod 31 is connected to the wire clamp fixing tube 13 so that the push rod 31 cooperates with the wire clamp fixing tube 13. When the push rod assembly 3 moves axially in the fixing device 12, the push rod 31 drives the wire clamp fixing tube 13 to move in the needle tube 11, and the wire clamp fixing tube 13 drives the wire clamp needle 2 to move in the needle tube 11, so that the top end of the wire clamp needle 2 can extend from the port of the needle tube 11 or retract into the needle tube 11, thereby ensuring that the push rod assembly 3 can move back and forth in the fixing device 12 to drive the wire clamp needle 2 to extend or retract into the needle tube 11.

[0061] Furthermore, elastic stop assemblies extend from both ends of the push rod assembly body 34, and the elastic stop assemblies can cooperate with the stop groove 16 on the fixing device 12 to stop the movement of the push rod assembly 3. The elastic stop assembly is specifically composed of an elastic arm 33 and a stop block 32 arranged on the elastic arm 33. The diameter of the elastic stop assembly is slightly larger than the cavity of the fixing device 12. Due to the elastic force of the elastic arm 33 itself, when the stop block 32 is pressed, the elastic arm 33 can drive the elastic stop assembly to compress and reduce the diameter due to the elastic force, so that the push rod assembly body 34 can be placed in the fixing device 12. The pressed elastic arm 33 will generate an elastic restoring force to act on the stop block 32. When the stop block 32 loses the external driving force, the elastic restoring force drives the elastic stop assembly to restore its diameter, so that the stop block 32 is placed in the stop groove 16. The stop block 32 is configured to be compatible with the stop groove 16, so that the stop block 32 is placed in the stop groove 16 and can move axially in the stop groove 16. Since the stop groove 16 is a long groove along the axial length direction of the fixing device 12, the stop block 32 moves axially in the stop groove 16 along the length direction of the fixing device 12, and the axial movement stroke of the stop block 32 is limited by the length of the stop groove 16, thereby limiting the axial movement stroke of the push rod assembly 3 in the fixing device 12, and the stop block 32 is limited by the groove wall of the stop groove 16 and cannot move radially, so as to limit the push rod assembly 3 from rotating in the fixing device 12, thereby ensuring that the axial movement of the push rod assembly 3 does not cause deviation, thereby forming a limit on the movement stroke and direction of the push rod assembly 3 in the fixing device 12.

[0062] For details, see Figure 8 When the push rod assembly 3 moves in the fixing device 12 toward the direction approaching the needle tube 11 to drive the thread clamping needle 2 to extend out of the needle tube 11, the stop block 32 moves in the stop groove 16 to the second end 162 of the stop groove 16, and is connected with the second end 162 of the stop groove 16 by a tenon, so that the stop block 32 is restricted by the groove wall of the stop groove 16 and cannot continue to move in the direction away from the needle tube 11, thereby restricting the push rod assembly 3 from continuing to move in the fixing device 12 toward the direction approaching the needle tube 11, preventing the thread clamping needle 2 from being completely removed from the needle tube 11, and keeping the thread clamping needle 2 in an open state.

[0063] See also Fig. 9 Further, when the restoring force generated by the restoring device 14 drives the push rod assembly 3 to move in the fixing device 12 in the direction away from the needle tube 11 to drive the thread clamping needle 2 to retract the needle tube 11, the stop block 32 moves in the stop groove 16 to the first end 161 of the stop groove 16, and is connected with the first end 161 of the stop groove 16 by a tenon, so that the stop block 32 is restricted by the groove wall of the stop groove 16 and cannot continue to move in the direction away from the needle tube 11, thereby restricting the push rod assembly 3 from continuing to move in the fixing device 12 in the direction away from the needle tube 11, and the push rod assembly 3 cannot be completely removed from the fixing device 12.

[0064] Here, there is no limitation on the length of the stop groove 16, which must satisfy the requirement that when the thread clamp needle 2 extends out of the needle tube 11, the stop block 32 is located at the second end 162 of the stop groove 16 and is connected to the second end 162 by a tenon; when the thread clamp needle 2 is retracted into the needle tube 11, the stop block 32 is located at the first end 161 of the stop groove 16 and is connected to the first end 161 by a tenon.

[0065] At the same time, since the stop groove 16 is arranged on the outer wall of the fixing device 12, the movement visibility of the stop block 32 and the push rod assembly 3 is better, so that the medical staff can directly observe the advancement and retreat of the internal push rod assembly 3 during the use of the wire clamp, which is convenient for the medical staff to operate more visually during the operation, and can accurately position the forward or backward movement during the surgical operation visually.

[0066] Furthermore, when the fixing device 12 and the push rod assembly 3 need to be disassembled for cleaning or storage, the stop block 3 is pressed. Since the elastic arm 33 has elastic force, it can drive the stop block 32 to retract from the stop groove 16, so that the stop block 3 loses the restriction of the groove wall of the stop groove 16. The restoring force of the restoring device 14 can drive the push rod assembly 3 to move in the fixing device 12 in the direction away from the needle tube 11 until the push rod assembly 3 is completely removed from the fixing device 12.

[0067] In order to prevent medical staff from slipping when operating the wire clamp due to surgical mucus on their fingers and thus not affecting work efficiency, a flange anti-slip device 17 is provided on the outer wall of the fixing device 12 .

[0068] The following examples illustrate the working process of the present invention in a specific application. It should be noted that the following content is only a specific application example of the present solution and does not constitute a limitation to the present solution.

[0069] The push rod assembly 3 is pressed to move the push rod assembly 3 in the fixing device 12 toward the direction close to the needle tube 11 , thereby driving the thread clamping needle 2 in the needle tube 11 to move toward the direction close to the needle tube 11 .

[0070] At the same time, the stop block 32 on the push rod assembly 3 moves in the stop groove 16 on the fixing device 12 toward the direction close to the needle tube 11. The restoring device 14 is compressed to generate a restoring force.

[0071] When the thread clamping needle 2 extends out from the needle tube 11 and opens, the stop block 32 moves in the stop groove 16 to the second end 162 of the stop groove 16 and is connected with the second end 162 of the stop groove 16 by a tenon, so that the stop block 32 is restricted by the groove wall of the stop groove 16 and cannot continue to move toward the needle tube 11, thereby restricting the push rod assembly 3 from continuing to move toward the needle tube 11 in the fixing device 12, preventing the thread clamping needle 2 from being completely removed from the needle tube 11 and keeping the thread clamping needle 2 in an open state.

[0072] After the thread clamping needle 2 finishes hooking the thread, it stops pressing the push rod assembly 3. The restoring force generated by the restoring device 14 drives the push rod assembly 3 to move in the fixing device 12 away from the needle tube 11, driving the thread clamping needle 2 to move in the needle tube 11 away from the needle tube 11.

[0073] When the thread clamp needle 2 retracts into the needle tube 11, the stop block 32 moves in the stop groove 16 to the first end 161 of the stop groove 16 and is connected with the first end 161 of the stop groove 16 by a tenon, so that the stop block 32 is restricted by the groove wall of the stop groove 16 and cannot continue to move in the direction close to the needle tube 11, thereby restricting the push rod assembly 3 from continuously moving in the fixing device 12 in the direction away from the needle tube 11, and the push rod assembly 3 cannot be completely removed from the fixing device 12, thereby causing the push rod assembly 3 and the thread clamp needle 2 to rebound and reset.

[0074] The automatic locking fascia clamp provided by the utility model adopts a stop block 32 to move in the stop groove 16, and cooperates with the tenons at both ends of the stop groove 16, so that the clamp needle 2 will not be completely moved out of the needle tube 11, and the push rod assembly 3 will not be completely moved out of the fixing device 12 due to the restoring force of the restoring device 14, affecting the normal operation of the clamp. At the same time, the stop block 32 cooperates with the stop groove 16 to keep the push rod assembly 3 axially moving in the fixing device 12, and the moving distance of the push rod assembly 3 can be clearly seen from the stop groove 16, so that medical staff can visualize and accurately position forward or backward during surgical operations.

[0075] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. An automatic locking fascia thread clamp, comprising a push rod assembly, a needle tube assembly and a thread clamp needle, wherein the needle tube assembly comprises a needle tube and a fixing device connected to each other, wherein the thread clamp needle is movably arranged in the needle tube, wherein a cavity adapted to the push rod assembly is provided inside the fixing device, wherein the push rod assembly is movably arranged in the fixing device and drives the thread clamp needle to be connected, wherein: At least one stop groove is provided on the fixing device, and the stop groove is communicated with the cavity in the fixing device; At least one stop block is provided on the push rod assembly, and the stop block is configured to be compatible with the stop groove, and can be placed in the stop groove when the push rod assembly is movably arranged in the fixing device, and cooperate with the stop groove to form a limiting structure.

2. The automatic locking fascia wire clamp according to claim 1, characterized in that: The stop block is arranged on the push rod assembly through an elastic assembly.

3. The automatic locking fascia wire clamp according to claim 1 or 2, characterized in that: The stop block can form a tenon connection with both ends of the stop groove.

4. The automatic locking fascia wire clamp according to claim 1, characterized in that: The push rod assembly is provided with a push rod, and the push rod is configured to be used for connecting a thread clamping needle.

5. The automatic locking fascia wire clamp according to claim 4, characterized in that: The needle tube assembly also includes a wire clamp fixing tube, which is movably arranged in a connecting assembly formed by the needle tube and the fixing device. One end of the wire clamp fixing tube is connected to the wire clamp needle, and the other end is connected to the push rod assembly.

6. The automatic locking fascia wire clamp according to claim 5, characterized in that: The fixing device is provided with a sealing component, which forms a sealing structure between the cavity of the fixing device and the needle tube, and also forms a dynamic seal with the wire clamp fixing tube.

7. The automatic locking fascia wire clamp according to claim 6, characterized in that: The sealing component is a silica gel block.

8. The automatic locking fascia wire clamp according to claim 1, characterized in that: The fixing device is also provided with a restoring device, which is configured to cooperate with the push rod assembly and can be deformed synchronously with the movement of the push rod assembly in the fixing device, and a restoring force can be formed on the push rod assembly based on the deformation.

9. The automatic locking fascia wire clamp according to claim 8, characterized in that: The return device is composed of a return spring.

10. The automatic locking fascia wire clamp according to claim 1, characterized in that: An anti-slip device is arranged on the outer side of the fixing device.

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