Fascial closure device with safety protection mechanism

Abstract

The fascia closure device of the safety protection mechanism of the present invention comprises a closure device, a suture traction device and a safety protection mechanism. The closure device comprises a closing end, a connecting rod, a shell and a handle; the closing end is connected to the distal end of the connecting rod and the shell; the proximal end of the connecting rod is connected to the handle; the operating handle can control the opening and closing of the closing end. The suture traction device comprises a needle body and a gripping portion, and a suture traction mechanism is provided on the needle body, and the suture traction mechanism can pull the surgical suture into the body. When the closing end is in a closed state, the end of the surgical suture can be clamped, and when the closure device is withdrawn from the body, the closing end can bring the end of the surgical suture out of the body. The safety protection mechanism can be arranged on the closure device or the suture traction device, and the safety protection mechanism can prevent the needle tip of the needle body from causing accidental damage to human tissues or organs, or the needle body from accidentally piercing into the body when the closing end is closed or the closing end is in an open and unlocked state, so that the clinical use process is safer.

Description

Technical Field

[0001] The invention relates to a surgical instrument, in particular to a fascia closer with a safety protection mechanism used in a fascia closing process. Background Art

[0002] With the advancement of medical technology, laparoscopic minimally invasive surgery has become the main method of surgery. After laparoscopic surgery, the peritoneum and fascia layers usually need to be sutured, otherwise it is easy to form intra-abdominal omentum or intestinal hernia, or local adhesion may lead to incomplete intestinal obstruction. In severe cases, it may cause puncture hole bleeding, puncture hole hernia and other problems.

[0003] The fascia closure of the prior art is completed by the cooperation of a closure device and a suture puller. The closure device is first inserted, and then the two ends of the surgical suture 200 are brought into the body by the suture puller. After the suture puller is withdrawn, the ends of the surgical suture 200 are retained in the body, and then the ends of the surgical suture 200 are simultaneously brought out of the body by the closure device, and then knotted and sutured.

[0004] In the prior art, when a suture retractor enters the human body, the sharp head of the needle is usually used to pierce the elastic insert of the puncture window on the closure device to bring the surgical suture 200 into the body. Since the head of the needle is very sharp, medical staff need to control the depth of the needle based on experience after entering the human body, which can easily cause accidental damage to surrounding tissues or organs. Especially when the closure device is in a closed state, since there is no working space formed by the depth plate, once the needle enters, it can easily cause accidental damage to surrounding tissues or organs. Therefore, it is necessary to improve the existing fascia closure device to avoid accidental damage to surrounding tissues or organs during operation. Summary of the invention

[0005] The fascia closure device with a safety protection mechanism of the present invention is protected by specially designed multiple safety protection mechanisms, which can not only prevent the suture retractor from accidentally entering the human body when the closure device is in a closed state or an open and non-locked state, but also effectively prevent the needle body from causing accidental damage to surrounding tissues or organs during normal puncture through the dual protection of the distal protective plate and the telescopic blunt head design at the tip of the needle.

[0006] The fascia closure device with a safety protection mechanism of the present invention comprises a closure device 1, a suture tractor 2 and a safety protection mechanism 3; the characteristics are:

[0007] A. The closer 1 comprises a closing end 11, a connecting rod 12, a housing 13 and a handle 14; the closing end 11 is connected to the distal ends of the connecting rod 12 and the housing 13; the proximal end of the connecting rod 12 is connected to the handle 14; the opening and closing of the closing end 11 can be controlled by manipulating the handle 14;

[0008] B. The suture tractor 2 comprises a needle body 21 and a gripping portion 22. The needle body 21 is provided with a suture traction mechanism 21-1, and the suture traction mechanism 21-1 can pull the surgical suture 200 into the body;

[0009] C. When the closing end 11 is in a closed state, the end of the surgical suture 200 can be clamped, and when the closure device 1 is withdrawn from the body, the closing end 11 can bring the end of the surgical suture 200 out of the body;

[0010] D. The safety protection mechanism 3 is disposed on the closure device 1 or the suture puller 2. The safety protection mechanism 3 can prevent the needle tip 21-2 of the needle body 21 from causing accidental damage to human tissues or organs.

[0011] The fascia closure device with a safety protection mechanism of the present invention is specially designed with a safety protection mechanism 3, which can be a protection plate or a protection platform arranged at the distal end of the closure device 1. The protection mechanism 3 forms a shield between the tissue and the needle tip 21-2 to prevent the needle tip 21-2 from puncturing the tissue or organ. Alternatively, the safety protection mechanism is designed on the suture tractor 2, the needle body 21 is designed as a double-layer structure of inner and outer needles, the suture traction mechanism 21-1 is designed on the inner needle 211, the inner needle 211 is designed as a blunt-tip structure, and the distal end of the outer needle 212 is designed as a sharp needle tip 21-2. Under normal conditions, the inner needle 211 is extended, and the blunt tip will not cause damage to the tissue or organ. When puncture is required, the outer needle 212 is extended, and the needle tip 21-2 punctures into the body. When the puncture is completed, under the action of the safety protection mechanism 3, the inner needle 211 is extended, and the blunt tip achieves a protective effect. The safety protection mechanism 3 can also be a protection cover 36 arranged at the proximal end of the shell 13. The opening 36-1 on the protection cover 36 can open the entry channel of the needle body 21 only when the closed end 11 is in an open and locked state, which can prevent the needle body 21 from accidentally piercing into the body when the closed end 11 is closed or the closed end 11 is open and unlocked.

[0012] The safety protection mechanism 3 is a baffle-type safety protection mechanism 301 or a blunt-tip telescopic safety protection mechanism 302 for protecting the needle tip 21-2 from accidentally injuring surrounding human tissues or organs, or a puncture protection type safety protection mechanism 303 for preventing the needle body 21 of the suture retractor 2 from accidentally piercing into the body when the closed end 11 is closed. The baffle-type safety protection mechanism 301 or the blunt-tip telescopic safety protection mechanism 302 can prevent the needle body 21 from accidentally piercing into the body due to excessive puncture depth during the puncture process. The puncture protection type safety protection mechanism 303 can prevent the needle body 21 from accidentally piercing into the body when the closed end 11 is closed or the closed end 11 is open and unlocked.

[0013] The applicant has only listed the above three types of safety protection mechanisms, which are used to protect the needle body 21-1 from accidental damage that may be caused when it is normally inserted into the human body and to prevent the needle body 21-1 from accidentally piercing the body when the closed end 11 is in the closed state. In actual applications, technicians in this field can design different safety protection mechanisms according to needs for the above two possible accidental situations, and they do not depart from the protection scope of this application.

[0014] The safety protection mechanism 3 is a baffle-type safety protection mechanism 301 . The baffle-type safety protection mechanism 301 is arranged at the distal end of the closer 1 . The safety protection mechanism 3 includes a protection end 31 and a connection end 32 .

[0015] When the safety protection mechanism 3 is arranged on the closure device 1, the protection end 31 is usually arranged at the distal end of the closure device 1. In the working state, the protection end 31 and the closing end 11 are opened, and a working space is formed between the protection end 31 and the closing end 11. The protection end 31 can isolate tissues or organs outside the working space to prevent the needle tip 21-2 from accidentally injuring the tissues or organs.

[0016] The protection end 31 of the safety protection mechanism 3 is a plate-shaped protection mechanism 31-1, a convex step protection mechanism 31-2 or a groove-shaped protection mechanism 31-3. The applicant only lists the above three specific protection mechanism forms. In practical applications, technicians in this field can design protection mechanisms with different structures as needed. The applicant does not list them one by one here, but they all do not deviate from the protection scope of this application.

[0017] The protective end 31 is made of a rigid material. The protective end 31 is usually made of a rigid material, so that the sharp needle tip 21-2 cannot pierce the protective end 31, which can play an effective protective role.

[0018] The connection end 32 of the safety protection mechanism 3 is connected to the closure 1 through an axis connection mechanism, a hinge mechanism, a slide mechanism, a concave-convex card fitting mechanism, or a thread mechanism. The applicant only lists the above-mentioned connection methods. In practical applications, technicians in this field can design different connection methods according to Xu Yu. The applicant does not give examples one by one here, but they all do not deviate from the protection scope of this application.

[0019] The safety protection mechanism 3 is also provided with a limiting mechanism 33. The limiting mechanism 33 can limit the maximum movement stroke of the protection end 31 of the protection mechanism 3 within a certain range, so as to effectively prevent the protection end 31 of the protection mechanism 3 from moving into the body under the pushing action of the needle body 21 and causing accidental damage to the organs. The limiting mechanism 33 can be a sliding groove limiting mechanism, a rotating shaft limiting mechanism, a hinge limiting mechanism and other limiting mechanisms. The applicant does not give examples one by one here, but they all do not deviate from the protection scope of this application.

[0020] The safety protection mechanism 3 is arranged on the suture tractor 2; the safety protection mechanism 3 is a telescopic blunt-head safety protection mechanism 302; the safety protection mechanism 3 includes a protective blunt head 35 and a motion control end 34; the protective blunt head 35 is arranged at the distal end of the needle body 21. The safety protection mechanism 3 can also be arranged on the suture tractor 2, the needle body 21 is designed as a double-layer structure of inner and outer needles, the suture traction mechanism 21-1 is designed on the inner needle 211, the inner needle 211 is designed as a blunt-head structure to constitute the protective blunt head 35, and the distal end of the outer needle 212 is designed as a sharp needle tip 21-2. Under normal conditions, the inner needle 211 is extended, and the blunt head will not cause damage to tissues or organs. When puncture is required, the outer needle 212 is extended, and the needle tip 21-2 punctures into the body. When the puncture is completed, under the action of the motion control end 34, the inner needle 211 is automatically extended, and the protective blunt head 35 achieves a protective effect.

[0021] The closed end 11 is provided with a puncture window 11 - 1 , and the needle body 21 of the suture tractor 2 can enter the human body through the puncture window 11 - 1 .

[0022] The puncture window 11-1 is provided with a thread fixing mechanism 11-11 made of a flexible material. The thread fixing mechanism 11-11 is usually made of an elastic material and embedded in the puncture window 11-1, so as to facilitate the needle body 21 to puncture into the human body. At the same time, due to the shrinkage elasticity of the elastic material itself, the puncture hole can be quickly closed when the needle body 21 withdraws, so that the surgical suture 200 brought into the body by the needle body 21 is retained on the thread fixing mechanism 11, ensuring that the surgical suture 200 stays in the body. The rapid closing of the puncture hole can also quickly close the puncture channel formed by the needle body 21, preventing the formation of a channel between the outside and the abdominal cavity, and achieving a good isolation effect.

[0023] The flexible material is silicone, or rubber, or thermoplastic elastomer (TPE), or thermoplastic polyurethane elastomer rubber (TPU). The applicant only lists the above materials here. In practical applications, technicians in this field can rotate other flexible materials or composite materials as needed. The applicant does not list them one by one here, but they all do not deviate from the protection scope of this application.

[0024] The shell 13 is provided with a guide channel 13-1, and the needle body 21 can enter the guide channel 13-1 along the entrance 13-11 of the guide channel 13-1 and move along the guide channel 13-1; a thread-removing groove 13-12 is provided on the side of the entrance 13-11. The guide channel 13-1 can guide the needle body 21 to accurately align with the puncture window 11-1, which is very convenient for clinical use. In addition, the guide channel 13-1 is usually embedded in the shell 13, so the needle body 21 moves in the shell 13, which makes the clinical use process safer. After the puncture is completed, the surgical suture 200 is removed from the thread-removing groove 13-12.

[0025] The housing 13 is also provided with a mounting through hole 13-2, and the connecting rod 12 is mounted in the mounting through hole 13-2. The connecting rod 12 is mounted in the mounting through hole 13-2, and the other end is connected to the handle 14. By manipulating the handle 14, the handle 14 drives the connecting rod 12 to move, and the connecting rod 12 can realize the opening and closing of the closed end 11. Since the connecting rod 12 is mounted in the housing 13, the use process in clinical applications is very convenient and safe.

[0026] A protective boss 13-3 is provided at the proximal end of the shell 13. The protective boss 13-3 is arranged at the proximal end of the shell 13, and the protective boss 13-3 has a base 13-31 and a protective platform 13-32, and the protective platform 13-32 surrounds the base 13-31. During clinical operation, when the needle body 21 needs to be inserted into the guide channel 13-1, since the entrance 13-11 is usually relatively small and not easy to align, the needle tip 21-2 of the needle body 21 is prone to slipping during the insertion process, which may easily cause accidental injuries to medical staff. The protective platform 13-32 can well limit the needle tip 21-2 of the needle body 21 within the range of the protective platform 13-32, which can effectively prevent the needle tip 21-2 from accidentally stabbing medical staff.

[0027] The closer 1 is also provided with a locking switch 15. The locking switch 15 can lock the open or closed state of the closer 1, making it more convenient for clinical use.

[0028] The distal end of the housing 13 of the closure device 1 is also provided with a depth control plate 13-4. The depth control plate 13-4 can control the distance between the closed end 11 and the tissue to ensure the working space.

[0029] The protection end 31 of the safety protection mechanism 3 is a plate-shaped protection mechanism 31-1, and the plate-shaped protection mechanism 31-1 includes a protection plate 31-11; the connection end 32 includes a connection shaft 32-1 and a limit block 32-2, and the outer side of the closed end 11 is provided with a limit groove 11-2 and a connection hole 11-3; the limit block 32-2 is embedded in the limit groove 11-2, and the connection shaft 32-1 is embedded in the connection hole 11-3 to form an axial connection; the connection end 32 rotates around the connection shaft 32-1 to realize the opening and closing of the plate-shaped protection mechanism 31-1; the limit block 32-2 and the limit groove 11-2 constitute a limit mechanism 33.

[0030] Under the push of the needle tip 21 - 2 , the connection end 32 rotates around the connection shaft 32 - 1 , driving the protection plate 31 - 11 to rotate, and the protection mechanism 3 can be in a protection state.

[0031] During clinical use, the closure device 1 is first placed in a closed state and inserted into the incision, and then the handle 14 is rotated to release the locking state of the locking switch 15 of the closure device 1, and the handle 14 is pulled back to open the closed end 11, and then the locking switch 15 is restored to a locked state to ensure that the closed end 11 is in an open state. Then, the surgical suture 200 is placed in the suture traction mechanism 21-1, and the needle body 21 moves through the guide channel 13-1 to pierce the flexible material of the puncture window 11-1, and continues to move to push the protective plate 31-11, and the connecting shaft 32-1 rotates, and the protective plate 31-11 opens, and a working space is formed between the protective plate 31-11 and the closed end 11. When the limit block 32-2 is restricted by the limit groove 11-2 and cannot rotate, the protective plate 31-11 can no longer move, and the needle body 21 is withdrawn at this time, and the surgical suture 200 is retained in the flexible material of the puncture window 11-1, and the distal end remains in the body. The other end of the surgical suture 200 is inserted into the body using the needle body 21 in the same way, and then the locking state of the locking switch 15 is released, and the handle 14 is pushed forward, and the closed end 11 clamps and closes the end of the surgical suture 200 remaining in the body, and the locking state of the locking switch 15 is restored, and the closer 1 is withdrawn from the body, and then the locking state of the locking switch 15 is released, and the closed end 11 is opened, and the end of the surgical suture 200 brought out of the body by the closed end 11 is released, and the surgical suture 200 is knotted in the body, that is, the fascia suturing process is completed.

[0032] The protection end 31 of the safety protection mechanism 3 is a convex step protection mechanism 31-2, and the convex step protection mechanism 31-2 includes a protection convex step 31-21; the connecting end 32 includes an axis mounting hole 32-3 and a limiting slide groove 32-4, and the shell 13 is provided with a positioning shaft 13-5 and a limiting slider 13-6; the positioning shaft 13-5 is embedded in the axis mounting hole 32-3, and the limiting slider 13-6 is embedded in the limiting slide groove 32-4; ​​the connecting end 32 rotates around the positioning shaft 13-5, driving the slider 13-6 to slide back and forth in the limiting slide groove 32-4, so as to realize the opening and closing of the protection end 31; the slider 13-6 and the limiting slide groove 32-4 constitute a limiting mechanism 33.

[0033] During clinical use, the closer 1 is first placed in a closed state and inserted into the incision, then the handle 14 is rotated to release the locking state of the locking switch 15 of the closer 1, and the handle 14 is pulled back to open the closed end 11. At this time, the connecting end 32 rotates around the positioning shaft 13-5, driving the slider 13-6 to slide in the limiting slide groove 32-4, the protective end 31 opens, and a working space is formed between the convex step protective mechanism 31-2 and the closed end 11. Then the locking switch 15 is restored to a locked state to ensure that the closed end 11 and the protective end 31 are in an open state, forming a stable working space. Then, the surgical suture 200 is placed in the suture traction mechanism 21-1, and the needle body 21 moves through the guide channel 13-1 to pierce the flexible material of the puncture window 11-1. When the needle tip 21-2 presses against the convex step protection mechanism 31-2, the needle body 21 can no longer move forward. At this time, the needle body 21 is withdrawn, and the surgical suture 200 is retained in the thread fixing mechanism 11-11 made of the flexible material of the puncture window 11-1, and the distal end remains in the body. The other end of the surgical suture 200 is inserted into the body using the needle body 21 in the same way, then the locking state of the locking switch 15 is released, the handle 14 is pushed forward, the closed end 11 clamps and closes the end of the surgical suture 200 remaining in the body, the locking state of the locking switch 15 is restored, the closer 1 is withdrawn from the body, and then the locking state of the locking switch 15 is released, the closed end 11 is opened, the end of the surgical suture 200 brought out of the body by the closed end 11 is released, and the surgical suture 200 is knotted outside the body, thus completing the fascia suturing process. The protective convex step 31-21 can effectively prevent the needle body 21 from sliding out of the protection range of the convex step protection mechanism 31-2.

[0034] The protection end 31 of the safety protection mechanism 3 is a groove-shaped protection mechanism 31-3, and the groove-shaped protection mechanism 31-3 includes a baffle 31-31, a guardrail 31-32, and a positioning pin 31-33; the connecting end 32 includes an axis mounting hole 32-3, and a positioning axis 13-5 is provided on the shell 13; the limiting mechanism 33 includes a pull rod 33-1 and a first slider 33-2, and the two ends of the pull rod 33-1 are respectively provided with a positioning groove 33-11 and a slide groove 33-12, and the first slider 33-2 is arranged on the outer side of the closed end 11; the positioning shaft 13-5 is embedded in the axis mounting hole 32-3, the positioning pin 31-33 is embedded in the positioning groove 33-11, and the first slider 33-2 is embedded in the slide groove 33-12; when the closed end 11 is opened, the first slider 33-2 moves along the slide groove 33-12, driving the protection end 31 to rotate and open around the positioning shaft 13-5.

[0035] During clinical use, the closer 1 is first placed in a closed state and inserted into the incision, then the handle 14 is rotated to release the locking state of the locking switch 15 of the closer 1, and the handle 14 is pulled back to open the closed end 11. At this time, the first slider 33-2 moves along the slide groove 33-12, and the pull rod 33-1 drives the protective end 31 to open, and a working space is formed between the groove-shaped protective mechanism 31-3 and the closed end 11. Then, the locking switch 15 is restored to a locked state to ensure that the closed end 11 and the protective end 31 are in an open state, forming a stable working space. Then, the surgical suture 200 is placed in the suture traction mechanism 21-1, and the needle body 21 moves through the guide channel 13-1 to pierce the flexible material of the puncture window 11-1. When the needle tip 21-2 presses against the baffle 31-31 of the groove-shaped protective mechanism 31-3, the needle body 21 can no longer move forward. At this time, the needle body 21 is withdrawn, and the surgical suture 200 is retained in the thread fixing mechanism 11-11 made of the flexible material of the puncture window 11-1, and the distal end remains in the body. The other end of the surgical suture 200 is inserted into the body using the needle body 21 in the same way, and the surgical suture 200 is removed from the suture removal groove 13-12. Then, the locking state of the locking switch 15 is released, and the handle 14 is pushed forward. The closed end 11 clamps and closes the end of the surgical suture 200 remaining in the body, and the locking state of the locking switch 15 is restored. The closer 1 is withdrawn from the body, and then the locking state of the locking switch 15 is released again, and the closed end 11 is opened. The end of the surgical suture 200 brought out of the body by the closed end 11 is released, and the surgical suture 200 is knotted outside the body, thereby completing the fascia suturing process. A guardrail 31-32 is provided around the baffle 31-31 of the groove-shaped protection mechanism 31-3, and the guardrail 31-32 can ensure that the movement range of the needle tip 21-2 is limited within the guardrail 31-32, effectively preventing the needle tip 21-2 from accidentally slipping out and causing accidental damage to surrounding tissues or organs.

[0036] The needle body 21 of the suture tractor 2 comprises an inner needle 211 and an outer needle 212, the outer needle 212 is provided with a suture traction mechanism 21-1, the distal end of the inner needle 211 is a smooth blunt head, constituting the protective blunt head 35; the distal end of the outer needle 212 is a needle tip 21-2; the motion control end 34 comprises a safety spring 34-1 and a safety spring rear positioning member 34-2; the safety spring 34-1 is installed between the safety spring rear positioning member 34-2 and the inner needle 211; when the safety spring 34-1 is compressed, the needle tip 21-2 of the outer needle 212 is exposed for puncture; after the puncture is completed, under the elastic force of the safety spring 34-1, the protective blunt head 35 at the distal end of the inner needle 211 extends out of the needle tip 21-2 of the outer needle 212, playing a safety protection role and avoiding accidental damage to the front tissue.

[0037] When used clinically, the closer 1 is first placed in a closed state and inserted into the incision, and then the handle 14 is rotated to release the locked state of the locking switch 15 of the closer 1, and the handle 14 is pulled back to open the closed end 11, and then the locking switch 15 is restored to the locked state to ensure that the closed end 11 is in an open state. Then, the surgical suture 200 is placed in the suture traction mechanism 21-1, and then the needle body 21 moves through the guide channel 13-1. When it hits the thread fixing mechanism 11-11 of the puncture window 11-1, the safety spring 34-1 is compressed under the action of external force, and the needle tip 21-2 of the outer needle 212 is exposed, piercing the thread fixing mechanism made of flexible material of the puncture window 11-1. After the puncture is completed, under the elastic force of the safety spring 34-1, the protective blunt head 35 at the distal end of the inner needle 211 extends out of the needle tip 21-2 of the outer needle 212, playing a safety protection role and avoiding accidental damage to the front tissue. At this time, the needle body 21 is withdrawn, and the surgical suture 200 is retained in the thread fixing mechanism 11-11 made of flexible material of the puncture window 11-1, and the distal end stays in the body. The other end of the surgical suture 200 is inserted into the body using the needle body 21 in the same way, and the surgical suture 200 is removed from the suture removal groove 13-12. Then, the locking state of the locking switch 15 is released, and the handle 14 is pushed forward. The closed end 11 clamps and closes the end of the surgical suture 200 remaining in the body, and the locking state of the locking switch 15 is restored. The closer 1 is withdrawn from the body, and then the locking state of the locking switch 15 is released again, and the closed end 11 is opened. The end of the surgical suture 200 brought out of the body by the closed end 11 is released, and the surgical suture 200 is knotted outside the body, thereby completing the fascia suturing process.

[0038] The safety protection mechanism 3 is arranged at the proximal end of the closer 1, and is a puncture protection type safety protection mechanism 303; the safety protection mechanism 3 includes a protection cover 36; an opening 36-1 is provided on the protection cover 36, and an upper de-threading groove 36-11 is provided on the side of the opening 36-1. The opening 36-1 can overlap with the entrance 13-11 of the guide channel 13-1 provided on the shell 13 only when the closed end 11 is opened and locked, and the upper de-threading groove 36-11 overlaps with the de-threading groove 13-12 on the side of the entrance 13-11, and the needle body 21 can enter the guide channel 13-1 through the opening 36-1 and enter the human body along the guide channel 13-1.

[0039] The protective cover 36 comprises a cover plate 36-2 and a rotating end 36-3; the cover plate 36-2 is provided with the opening 36-1, the side of the opening 36-1 is provided with an upper de-wire groove 36-11, the rotating end 36-3 is provided with a motion groove 36-4, the motion groove 36-4 comprises a rotational motion groove 36-41 and a vertical motion groove 36-42; the protective cover 36 is provided with a mounting channel 36-5 inside, the protective cover 36 is embedded in the proximal end of the shell 13 through the mounting channel 36-5, and can rotate around the shell 13; the handle 14 is provided with a motion mechanism 14-1 on the outside, the motion mechanism 14-1 is provided with a motion block 14-11, the motion block 14-11 can be embedded in the motion groove 36-4, when the handle 14 moves, the motion block 14-1 1 can rotate horizontally along the rotational motion groove 36-41, or move vertically along the vertical motion groove 36-42; when the handle 14 is pulled toward the proximal end, driving the motion block 14-11 to move vertically toward the proximal end to the end of the vertical motion groove 36-42, the handle 14 is rotated, and the motion block 14-11 will drive the protective cover 36 to rotate, and the opening 36-1 will gradually overlap with the entrance 13-11 of the guide channel 13-1 of the shell 13 as the protective cover 36 rotates. When the handle 14 is rotated to the locked state, the entrance 13-11 is opened, and the upper de-threading groove 36-11 overlaps with the de-threading groove 13-12 on the side of the entrance 13-11. At this time, the needle body 21-1 can enter the human body through the guide channel 13-1.

[0040] The motion groove 36 - 4 can be designed as an L-shaped sliding groove, the L-shaped bottom constitutes the rotational motion groove 36 - 41, and the L-shaped vertical part constitutes the vertical motion groove 36 - 42.

[0041] During clinical use, the closed end 11 is first closed, and then the handle 14 is rotated, and the motion block 14-11 slides along the rotational motion groove 36-41 to the end, locking the closed end 11. At this time, the protective cover 36 does not rotate, and the opening 36-1 of the protective cover 36 closes the entrance 13-1 of the guide channel 13. The closed end 11 is inserted into the body through the incision, and then the handle 14 is rotated in the opposite direction, and the motion block 14-11 retreats along the rotational motion groove 36-41 to the initial position of the rotational motion groove 36-41, and the locking state of the closed state of the closed end 11 is released. At this time, the protective cover 36 does not rotate, and the opening 36-1 of the protective cover 36 still closes the entrance 13-1 of the guide channel 13. Then the handle 14 is pulled upward, the closed end 11 opens, and then the handle 14 is Rotate, the moving block 14-11 will push the protective cover 36 to rotate, the opening 36-1 gradually approaches and overlaps with the entrance 13-1 of the guide channel 13, and the entrance 13-1 of the guide channel 13 gradually opens. When the closed end 14 is in a locked state, the opening 36-1 of the protective cover 36 and the entrance 13-1 of the guide channel 13 completely overlap, and the entrance 13-1 of the guide channel 13 is completely open. At this time, the needle body 21 can enter the human body along the guide channel 13.

[0042] The safety protection mechanism 3 is a combination of the baffle-type safety protection mechanism 301 and the puncture protection-type safety protection mechanism 303 .

[0043] The safety protection mechanism 3 includes the baffle-type safety protection mechanism 301 and the puncture protection type safety protection mechanism 303; the baffle-type safety protection mechanism 301 is arranged at the distal end of the closer 1, including a protection end 31 and a connection end 32; the protection end 31 is a convex step protection mechanism 31-2, and the convex step protection mechanism 31-2 includes a protection convex step 31-21; the connection end 32 includes an axis mounting hole 32-3 and a limiting slide groove 32-4, and a positioning shaft 13-5 and a limiting slide block 13-6 are provided on the housing 13; the positioning shaft 13-5 is embedded in the axis mounting hole 32-3, and the limiting slide block 13-6 is embedded in the limiting slide groove 32-4; ​​the connection end 32 rotates around the positioning shaft 13-5, driving the slide block 13-6 in the limiting The protective end 31 can be opened and closed by sliding back and forth in the limiting slide groove 32-4; ​​the slider 13-6 and the limiting slide groove 32-4 constitute a limiting mechanism 33; the puncture protection type safety protection mechanism 303 includes a protective cover 36; an opening 36-1 is provided on the protective cover 36, and an upper de-threading groove 36-11 is provided on the side of the opening 36-1. The opening 36-1 can overlap with the entrance 13-11 of the guide channel 13-1 set on the shell 13 only when the closed end 11 is opened and locked. At this time, the upper de-threading groove 36-11 overlaps with the de-threading groove 13-12 on the side of the entrance 13-11, and the needle body 21 can enter the guide channel 13-1 through the opening 36-1 and enter the human body along the guide channel 13-1.

[0044] During clinical use, the closed end 11 is first closed, and then the handle 14 is rotated, and the movement block 14-11 slides to the end along the rotational movement groove 36-41 to lock the closed end 11. At this time, the protective cover 36 does not rotate, and the opening 36-1 of the protective cover 36 closes the entrance 13-1 of the guide channel 13. At this time, the closed end 11 is inserted into the body through the incision, and then the handle 14 is rotated in the opposite direction. The moving block 14-11 retreats along the rotating movement groove 36-41 to the initial position of the rotating movement groove 36-41, and the locking state of the closed state of the closed end 11 is released. At this time, the protective cover 36 does not rotate, and the opening 36-1 of the protective cover 36 still closes the entrance 13-1 of the guide channel 13. Then the handle 14 is pulled upward, and the closed end 11 opens. At this time, the connecting end 32 rotates around the positioning axis 13-5, driving the slider 13-6 to slide in the limiting slide groove 32-4, and the protective end 31 opens, and a working space is formed between the groove-shaped protective mechanism 31-3 and the closed end 11. The handle 14 is rotated again, and the moving block 14-11 will push the protective cover 36 to rotate, and the opening 36-1 gradually approaches and overlaps the entrance 13-1 of the guide channel 13, and the entrance 13-1 of the guide channel 13 is gradually opened until the closed end 14 is in a locked state. At this time, the closed end 11 and the protective end 31 are in a locked open state, forming a stable working space, and the opening 36-1 of the protective cover 36 and the entrance 13-1 of the guide channel 13 are completely overlapped, and the entrance 13-1 of the guide channel 13 is completely open, and the upper de-wire groove 36-11 overlaps with the de-wire groove 13-12 on the side of the entrance 13-11. Then, the surgical suture 200 is placed in the suture traction mechanism 21-1, and the needle body 21 moves through the guide channel 13-1 to pierce the flexible material of the puncture window 11-1. When the needle tip 21-2 presses against the convex step protection mechanism 31-2, the needle body 21 can no longer move forward. At this time, the needle body 21 is withdrawn, and the surgical suture 200 is retained in the thread fixing mechanism 11-11 made of the flexible material of the puncture window 11-1, and the distal end stays in the body. The other end of the surgical suture 200 is placed in the body using the needle body 21 in the same way, and the surgical suture 200 is removed from the thread stripping groove 13-12 and the upper thread stripping groove 36-11. Then, the handle 14 is rotated in the opposite direction, and the motion block 14-11 drives the protection cover 36 to move in the opposite direction, releasing the locking state of the locking switch 15, and at the same time, the entrance 13-1 of the guide channel 13 is closed.Then, the handle 14 is pushed forward, and the movement block 14-11 moves along the vertical movement groove 36-42. The closed end 11 clamps and closes the end of the surgical suture 200 remaining in the body. Then, the handle 14 is rotated, and the movement block 14-11 moves along the rotational movement groove 36-41 to restore the locking state of the locking switch 15, and the closer 1 is withdrawn from the body. Then, the locking state of the locking switch 15 is released, and the closed end 11 is opened to release the end of the surgical suture 200 brought out of the body by the closed end 11. The surgical suture 200 is knotted outside the body, and the fascia suturing process is completed.

[0045] The safety protection mechanism 3 is a combination of the blunt-tip telescopic safety protection mechanism 302 and the puncture protection type safety protection mechanism 303 .

[0046] The safety protection mechanism 3 is a combination of the baffle-type safety protection mechanism 301 , the blunt-end telescopic safety protection mechanism 302 , and the puncture protection type safety protection mechanism 303 .

[0047] The applicant specifically lists the combination of the above-mentioned several safety protection mechanisms 3. Through the combination of the safety protection mechanisms 3 with different structures, it is not only possible to prevent the needle tip 21-2 from accidentally piercing surrounding tissues or organs during the puncture process, but also to avoid accidental injuries caused by the needle body 21 mistakenly entering the body when the closed end 11 is not in an open and locked state. In practical applications, technicians in this field can design different safety protection methods as needed and use them in combination. The applicant does not give examples one by one here, but they all do not deviate from the protection scope of this application.

[0048] The fascia closure device of the safety protection mechanism of the present invention comprises a closure device 1, a suture traction device 2 and a safety protection mechanism 3. The closure device 1 comprises a closed end 11, a connecting rod 12, a shell 13 and a handle 14; the closed end 11 is connected to the distal ends of the connecting rod 12 and the shell 13; the proximal end of the connecting rod 12 is connected to the handle 14; the opening and closing of the closed end 11 can be controlled by manipulating the handle 14. The suture traction device 2 comprises a needle body 21 and a gripping portion 22, and a suture traction mechanism 21-1 is provided on the needle body 21, and the suture traction mechanism 21-1 can traction and bring the surgical suture 200 into the body. When the closed end 11 is in a closed state, the end of the surgical suture 200 can be clamped, and when the closure device 1 is withdrawn from the body, the closed end 11 can bring the end of the surgical suture 200 out of the body. The safety protection mechanism 3 can be arranged on the closure device 1 or the suture puller 2. The safety protection mechanism 3 can prevent the needle tip 21-2 of the needle body 21 from causing accidental damage to human tissues or organs, or prevent the needle body 21 from accidentally piercing into the body when the closed end 11 is closed or the closed end 11 is open and unlocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 It is a three-dimensional structural schematic diagram of the fascia closer with a safety protection mechanism of the present invention when the plate-shaped protection mechanism is closed.

[0050] Figure 1-1 yes Figure 1 Front view of the closer.

[0051] Figure 1-2 yes Figure 1 Left side view of the closer.

[0052] Figure 1-3 yes Figure 1-1 AA section view.

[0053] Figure 2 yes Figure 1 Working status diagram.

[0054] Figure 2-1 yes Figure 2 Enlarged view of area B.

[0055] Figure 2-2 yes Figure 2 Right side view of the closer.

[0056] Figure 2-3 yes Figure 2 Front view of the closer.

[0057] Figure 2-4 yes Figure 2-2 CC cross-sectional view.

[0058] Figure 2-5 This is an exploded view of the closer.

[0059] Figure 3 It is a three-dimensional structural schematic diagram of the fascia closer with a safety protection mechanism of the convex step protection mechanism of the present invention when it is closed.

[0060] Figure 3-1 yes Figure 3 Front view of the closer.

[0061] Figure 3-2 yes Figure 3 Left side view of the closer.

[0062] Figure 3-3 yes Figure 3-1 DD cross-sectional view.

[0063] Figure 4 yes Figure 3 Schematic diagram of the three-dimensional structure of the closer when the closed end is opened.

[0064] Figure 4-1 yes Figure 4 main view.

[0065] Figure 4-2 yes Figure 4 Left view of .

[0066] Figure 4-3 yes Figure 4-1 EE cross-sectional view.

[0067] Figure 4-4 yes Figure 4 Schematic diagram of the three-dimensional structure of the suture retractor during insertion.

[0068] Figure 5 It is a three-dimensional structural schematic diagram of the fascia closer with a safety protection mechanism of the present invention when the groove-type protection mechanism is closed.

[0069] Figure 5-1 yes Figure 5 Front view of the closer.

[0070] Figure 5-2 yes Figure 5-1 Left view of .

[0071] Figure 5-3 yes Figure 5-1 FF cross-sectional view.

[0072] Figure 5-4 yes Figure 5-2 GG cross-sectional view.

[0073] Figure 5-5 yes Figure 5-3 Cross-sectional view of the switch when unlocked.

[0074] Figure 5-6 yes Figure 5-4 Cross-sectional view of the switch when unlocked.

[0075] Figure 6 yes Figure 5 Schematic diagram of the three-dimensional structure of the closer in the open state.

[0076] Figure 6-1 yes Figure 6 main view.

[0077] Figure 6-2 yes Figure 6 Left view of .

[0078] Figure 6-3 yes Figure 6-1 HH cross-sectional view.

[0079] Figure 6-4 yes Figure 6 Schematic diagram of the three-dimensional structure of the suture retractor during insertion.

[0080] Figure 7 It is a three-dimensional structural schematic diagram of the fascia closer with a safety protection mechanism of the blunt-head telescopic safety protection mechanism of the present invention when closed.

[0081] Figure 7-1 yes Figure 7 II sectional view.

[0082] Figure 7-2 yes Figure 7 Schematic diagram of the three-dimensional structure of the suture retractor during insertion.

[0083] Figure 8 The present invention is a schematic diagram of the three-dimensional structure of a fascia closer with a safety protection mechanism when the safety protection mechanism is closed and locked, which is a safety protection mechanism that is a combination of a baffle-type safety protection mechanism and a puncture protection type safety protection mechanism.

[0084] Figure 8-1 yes Figure 8 main view.

[0085] Figure 8-2 It is the left view of the figure.

[0086] Figure 8-3 yes Figure 8-2 JJ cross-sectional view.

[0087] Fig. 9 yes Figure 8 Schematic diagram of the three-dimensional structure when the locked state is released.

[0088] Figure 9-1 yes Fig. 9 main view.

[0089] Figure 9-2 yes Fig. 9 Left view of .

[0090] Figure 9-3 yes Figure 9-2 KK cross-sectional view.

[0091] Fig.10 yes Figure 8 Schematic diagram of the three-dimensional structure when the closed end is open but not locked.

[0092] Figure 10-1 yes Fig.10 main view.

[0093] Figure 10-2 yes Fig.10 Left view of .

[0094] Figure 10-3 yes Figure 10-2 LL cross-sectional view.

[0095] Figure 10-4 yes Figure 10-3 Enlarged view of point M.

[0096] Fig.11 yes Fig.10 Schematic diagram of the three-dimensional structure in the locked state.

[0097] Figure 11-1 yes Fig.11 Top view of the .

[0098] Figure 11-2 yes Fig.11 main view.

[0099] Figure 11-3 yes Figure 11-2 NN cross-sectional view.

[0100] Fig.12 yes Fig.11 Schematic diagram of the three-dimensional structure of the suture retractor during insertion.

[0101] Fig.13 It is a schematic diagram of the three-dimensional structure of the shell and the protective boss.

[0102] Fig.14 It is a schematic diagram of the three-dimensional structure of the protective cover.

[0103] Fig.15 It is a cross-sectional view of the closer when it is open and locked.

[0104] Figure 15-1 yes Fig.15 Enlarged view of point O.

[0105] Figure 15-2 It is a cross-sectional view of the closure when it is open and unlocked.

[0106] Figure 15-3 yes Figure 15-2 Enlarged view of P.

[0107] In the above figure: 100 is the fascia closure device with a safety protection mechanism of the present invention, and 200 is the surgical suture.

[0108] 1 is a closure device, 2 is a suture retractor, and 3 is a safety protection mechanism.

[0109] The closer includes: 11 is a closing end, 12 is a connecting rod, 13 is a shell, 14 is a handle, and 15 is a locking switch.

[0110] 11-1 is the puncture window, 11-11 is the wire fixing mechanism; 11-2 is the limiting groove, and 11-3 is the connecting hole.

[0111] 13-1 is a guide channel, 13-11 is an entrance, 13-12 is a wire stripping groove; 13-2 is a mounting through hole, 13-3 is a protective boss, 13-31 is a base, 13-32 is a protective platform; 13-4 is a depth control plate, 13-5 is a positioning shaft, 13-6 is a limit slider, and 13-7 is a positioning column.

[0112] The suture traction device comprises: 21 is a needle body, 21-1 is a suture traction mechanism, 21-2 is a needle tip; 22 is a gripping portion, 211 is an inner needle, and 212 is an outer needle.

[0113] The safety protection mechanism includes: 301 is a baffle type safety protection mechanism, 302 is a blunt head telescopic type safety protection mechanism, and 303 is a puncture protection type safety protection mechanism.

[0114] 31 is a protection end, 32 is a connection end, 33 is a limit mechanism, 34 is a motion control end, 35 is a protection blunt end, and 36 is a protection cover.

[0115] 31-1 is a plate-shaped protection mechanism, 31-2 is a convex step protection mechanism, 31-3 is a groove-shaped protection mechanism; 31-11 is a protection plate, 31-21 is a protective convex step, 31-31 is a baffle, 31-32 is a guardrail, and 31-33 is a positioning pin.

[0116] 32-1 is the connecting shaft, 32-2 is the limiting block, 32-3 is the shaft mounting hole, and 32-4 is the limiting slide groove.

[0117] 33 - 1 is a pull rod, 33 - 2 is a first sliding block, 33 - 11 is a positioning groove, and 33 - 12 is a sliding groove.

[0118] 34-1 is a safety spring, and 34-2 is a rear positioning member of the safety spring.

[0119] 36-1 is an opening, 36-2 is a cover plate, 36-3 is a rotating end, 36-4 is a movement slot, 36-5 is an installation channel; 36-11 is an upper de-wire slot, 36-31 is a positioning slot, 36-41 is a rotating movement slot, and 36-42 is a vertical movement slot. DETAILED DESCRIPTION

[0120] Embodiment 1: The fascia closure device with a safety protection mechanism of the present invention having a plate-shaped protection mechanism

[0121] refer to Figures 1 to 2-5 In this embodiment, the fascia closure device 100 with a safety protection mechanism includes a closure device 1, a suture retractor 2 and a safety protection mechanism 3.

[0122] refer to Figure 1 and Figure 2 The closer 1 comprises a closing end 11, a connecting rod 12, a shell 13 and a handle 14; the closing end 11 is connected to the distal ends of the connecting rod 12 and the shell 13; the proximal end of the connecting rod 12 is connected to the handle 14; and the opening and closing of the closing end 11 can be controlled by manipulating the handle 14.

[0123] refer to Figure 1 The suture traction device 2 comprises a needle body 21 and a gripping portion 22. The needle body 21 is provided with a suture traction mechanism 21-1, and the suture traction mechanism 21-1 can pull the surgical suture 200 into the body.

[0124] When the closing end 11 is in a closed state, the end of the surgical suture 200 can be clamped. When the closure device 1 is withdrawn from the body, the closing end 11 can bring the end of the surgical suture 200 out of the body.

[0125] refer to Figure 1-1 to Figure 1-3 and Figure 2-1 In this embodiment, a puncture window 11 - 1 is provided on the closed end 11 , and the needle body 21 of the suture tractor 2 can enter the human body through the puncture window 11 - 1 .

[0126] refer to Figure 2 and Figure 2-1 The puncture window 11-1 is provided with a thread fixing mechanism 11-11 made of a flexible material. The thread fixing mechanism 11-11 is usually made of an elastic material and embedded in the puncture window 11-1, which facilitates the needle body 21 to puncture into the human body. At the same time, due to the shrinkage elasticity of the elastic material itself, the puncture hole can be quickly closed when the needle body 21 withdraws, so that the surgical suture 200 brought into the body by the needle body 21 is retained on the thread fixing mechanism 11, ensuring that the surgical suture 200 stays in the body. The rapid closing of the puncture hole can also quickly close the puncture channel formed by the needle body 21, preventing the formation of a channel between the outside and the abdominal cavity, and achieving a good isolation effect.

[0127] The flexible material may be silicone, rubber, thermoplastic elastomer (TPE), or thermoplastic polyurethane elastomer rubber (TPU). The applicant only lists the above materials. In practical applications, technicians in this field can rotate other flexible materials or composite materials as needed. The applicant does not list them one by one here, but they all fall within the scope of protection of this application.

[0128] refer to Figure 2 In this embodiment, a guide channel 13-1 is provided on the shell 13, and the needle body 21 can enter the guide channel 13-1 along the entrance 13-11 of the guide channel 13-1 and move along the guide channel 13-1. The guide channel 13-1 can guide the needle body 21 to accurately align with the puncture window 11-1, which is very convenient for clinical use. And the guide channel 13-1 is usually embedded in the shell 13, so the needle body 21 moves in the shell 13, which makes the clinical use process safer. A de-threading groove 13-12 is provided on the side of the entrance 13-11. After the puncture is completed, the surgical suture 200 can be removed from the de-threading groove 13-12.

[0129] refer to Figure 1-3 and Figure 2-4 The housing 13 is also provided with a mounting through hole 13-2, and the connecting rod 12 is mounted in the mounting through hole 13-2, one end of which is connected to the closed end 11, and the other end is connected to the handle 14. By manipulating the handle 14, the handle 14 drives the connecting rod 12 to move, and the connecting rod 12 can realize the opening and closing of the closed end 11. Since the connecting rod 12 is mounted in the housing 13, the use process in clinical applications is very convenient and safe.

[0130] In this embodiment, a protective boss 13-3 is provided at the proximal end of the shell 13. The protective boss 13-3 includes a base 13-31 and a protective platform 13-32, and the protective platform 13-32 surrounds the base 13-31. During clinical operation, when the needle body 21 needs to be inserted into the guide channel 13-1, since the entrance 13-11 is usually relatively small and difficult to align, the needle tip 21-2 of the needle body 21 is prone to slipping during the insertion process, which can easily cause accidental injuries to medical staff. The protective platform 13-32 can well limit the needle tip 21-2 of the needle body 21 within the range of the protective platform 13-32, which can effectively prevent the needle tip 21-2 from accidentally stabbing medical staff.

[0131] refer to Figure 1-3 and Figure 2-4The closer 1 is also provided with a locking switch 15. The locking switch 15 can lock the open or closed state of the closer 1, which is more convenient for clinical use.

[0132] In this embodiment, the safety protection mechanism 3 is a baffle-type safety protection mechanism 301 , which is arranged at the far end of the closer 1 . The safety protection mechanism 3 includes a protection end 31 and a connection end 32 .

[0133] The protective end 31 is made of a rigid material. The protective end 31 is usually made of a rigid material, so that the sharp needle tip 21-2 cannot pierce the protective end 31, which can play an effective protective role.

[0134] The connection end 32 of the safety protection mechanism 3 is connected to the closer 11 through an axis connection mechanism. The connection end 32 of the safety protection mechanism 3 can also be connected to the closer 1 through a hinge mechanism, a slide mechanism, a concave-convex card fitting mechanism, or a threaded mechanism. The applicant only lists the above-mentioned connection methods here. In practical applications, technicians in this field can design different connection methods according to Xu Yu. The applicant does not give examples one by one here, but they all do not deviate from the protection scope of this application.

[0135] refer to Figure 2-4 The safety protection mechanism 3 is also provided with a limiting mechanism 33. The limiting mechanism 33 can limit the maximum movement stroke of the protection end 31 of the protection mechanism 3 within a certain range, so as to effectively prevent the protection end 31 of the protection mechanism 3 from moving into the body under the pushing action of the needle body 21 and causing accidental damage to the organs. The limiting mechanism 33 can be a sliding groove limiting mechanism, a rotating shaft limiting mechanism, a hinge limiting mechanism and other limiting mechanisms. The applicant does not give examples one by one here, but they all do not deviate from the protection scope of this application.

[0136] In this embodiment, the protection end 31 of the safety protection mechanism 3 is a plate-shaped protection mechanism 31-1, and the plate-shaped protection mechanism 31-1 includes a protection plate 31-11; the connecting end 32 includes a connecting shaft 32-1 and a limit block 32-2, and the outer side of the closed end 11 is provided with a limit groove 11-2 and a connecting hole 11-3; the limit block 32-2 is embedded in the limit groove 11-2, and the connecting shaft 32-1 is embedded in the connecting hole 11-3 to form an axial connection; the connecting end 32 rotates around the connecting shaft 32-1 to realize the opening and closing of the plate-shaped protection mechanism 31-1; the limit block 32-2 and the limit groove 11-2 constitute a limit mechanism 33.

[0137] Under the push of the needle tip 21 - 2 , the connection end 32 rotates around the connection shaft 32 - 1 , driving the protection plate 31 - 11 to rotate, and the protection mechanism 3 can be in a protection state.

[0138] During clinical use, the closure device 1 is first placed in a closed state and inserted into the incision, and then the handle 14 is rotated to release the locking state of the locking switch 15 of the closure device 1, and the handle 14 is pulled back to open the closed end 11, and then the locking switch 15 is restored to a locked state to ensure that the closed end 11 is in an open state. Then, the surgical suture 200 is placed in the suture traction mechanism 21-1, and the needle body 21 moves through the guide channel 13-1 to pierce the flexible material of the puncture window 11-1, and continues to move to push the protective plate 31-11, and the connecting shaft 32-1 rotates, and the protective plate 31-11 opens, and a working space is formed between the protective plate 31-11 and the closed end 11. When the limit block 32-2 is restricted by the limit groove 11-2 and cannot rotate, the protective plate 31-11 can no longer move, and the needle body 21 is withdrawn at this time, and the surgical suture 200 is retained in the flexible material of the puncture window 11-1, and the distal end remains in the body. The other end of the surgical suture 200 is inserted into the body using the needle body 21 in the same way, and the surgical suture 200 is removed from the thread removal groove 13-12. Then, the locking state of the locking switch 15 is released, and the handle 14 is pushed forward, and the closed end 11 clamps and closes the end of the surgical suture 200 remaining in the body, and the locking state of the locking switch 15 is restored, and the closer 1 is withdrawn from the body, and then the locking state of the locking switch 15 is released again, and the closed end 11 is opened, and the end of the surgical suture 200 brought out of the body by the closed end 11 is released, and the surgical suture 200 is knotted in vitro, that is, the fascia suturing process is completed.

[0139] The fascia closure device with a safety protection mechanism of this embodiment can conveniently bring the surgical suture 200 into the body and bring the end out of the body again for knotting through the closure device 1 and the suture puller 2. The stable working space formed between the protection plate 31-11 and the closed end 11 can ensure that the needle body 21 cannot move forward after hitting the protection plate 31-11, thereby effectively preventing the needle body 21 from causing accidental damage to surrounding tissues or organs, and the clinical use process is safer and more reliable.

[0140] Embodiment 2: Fascia closure device with safety protection mechanism of the present invention with convex step protection mechanism

[0141] refer to Figure 3 to Figure 4-4The difference between this embodiment and embodiment 1 is that, in this embodiment, the protection end 31 is a convex step protection mechanism 31 - 2 .

[0142] refer to Figure 4-2 and Figure 4-3 The convex step protection mechanism 31-2 includes a protection convex step 31-21; the connecting end 32 includes an axis mounting hole 32-3 and a limiting slide groove 32-4, and the housing 13 is provided with a positioning shaft 13-5 and a limiting slider 13-6; the positioning shaft 13-5 is embedded in the axis mounting hole 32-3, and the limiting slider 13-6 is embedded in the limiting slide groove 32-4; ​​the connecting end 32 rotates around the positioning shaft 13-5, driving the slider 13-6 to slide back and forth in the limiting slide groove 32-4, so as to realize the opening and closing of the protection end 31; the slider 13-6 and the limiting slide groove 32-4 constitute a limiting mechanism 33.

[0143] refer to Figure 4 and Figure 4-2 The distal end of the housing 13 of the closure device 1 is also provided with a depth control plate 13-4. The depth control plate 13-4 can control the distance between the closed end 11 and the tissue to ensure the working space.

[0144] When used clinically, refer to Figure 3 to Figure 3-3 First, put the closer 1 in the closed state, insert it into the incision, then rotate the handle 14 to release the locked state of the locking switch 15 of the closer 1, pull the handle 14 backward, and the closed end 11 opens. At this time, the connecting end 32 rotates around the positioning shaft 13-5, driving the slider 13-6 to slide in the limiting slide groove 32-4, and the protective end 31 opens. A working space is formed between the convex step protective mechanism 31-2 and the closed end 11. Then restore the locking switch 15 to the locked state to ensure that the closed end 11 and the protective end 31 are in the open state, forming a stable working space. Figure 4 to Figure 4-3 Then, the surgical suture 200 is placed in the suture traction mechanism 21-1, and the needle body 21 moves through the guide channel 13-1 to pierce the flexible material of the puncture window 11-1. When the needle tip 21-2 presses against the convex step protection mechanism 31-2, the needle body 21 can no longer move forward. Figure 4-4At this time, the needle body 21 is withdrawn, and the surgical suture 200 is retained in the thread fixing mechanism 11-11 made of the flexible material of the puncture window 11-1, and the distal end remains in the body. The other end of the surgical suture 200 is inserted into the body using the needle body 21 in the same way, and the surgical suture 200 is removed from the thread removal groove 13-12. Then, the locking state of the locking switch 15 is released, and the handle 14 is pushed forward. The closed end 11 clamps and closes the end of the surgical suture 200 that remains in the body, and the locking state of the locking switch 15 is restored. The closure device 1 is withdrawn from the body, and then the locking state of the locking switch 15 is released again, and the closed end 11 is opened. The end of the surgical suture 200 brought out of the body by the closed end 11 is released, and the surgical suture 200 is knotted in vitro, that is, the fascia suturing process is completed.

[0145] In this embodiment, since the protection end 31 includes the protection convex step 31 - 21, the protection convex step 31 - 21 can effectively prevent the needle body 21 from sliding out of the protection range of the convex step protection mechanism 31 - 2, and the clinical use process is safer.

[0146] Embodiment 3: The fascia closure device with a safety protection mechanism of the present invention having a groove-shaped protection mechanism

[0147] refer to Figure 5 to Figure 6-4 The difference between this embodiment and embodiment 2 is that, in this embodiment, the protection end 31 is a groove-shaped protection mechanism 31-3.

[0148] refer to Figure 6 to Figure 6 -,3, the groove-shaped protective mechanism 31-3 includes a baffle 31-31, a guardrail 31-32, and a positioning pin 31-33; the connecting end 32 includes an axis mounting hole 32-3, and a positioning axis 13-5 is provided on the shell 13; the limiting mechanism 33 includes a pull rod 33-1 and a first slider 33-2, and the two ends of the pull rod 33-1 are respectively provided with a positioning groove 33-11 and a slide groove 33-12, and the first slider 33-2 is arranged on the outer side of the closed end 11; the positioning shaft 13-5 is embedded in the axis mounting hole 32-3, the positioning pin 31-33 is embedded in the positioning groove 33-11, and the first slider 33-2 is embedded in the slide groove 33-12; when the closed end 11 is opened, the first slider 33-2 moves along the slide groove 33-12, driving the protective end 31 to rotate and open around the positioning shaft 13-5.

[0149] When used clinically, refer to Figure 5 to Figure 5-4 First, the closer 1 is in a closed state and inserted into the incision, and then the handle 14 is rotated to release the locking state of the locking switch 15 of the closer 1. Figure 5-5 and Figure 5-6, pull the handle 14 backward, the closed end 11 opens, at this time, the first slider 33-2 moves along the slide groove 33-12, the pull rod 33-1 drives the protective end 31 to open, and a working space is formed between the groove-shaped protective mechanism 31-3 and the closed end 11, refer to Figure 6 to Figure 6-3 Then, the locking switch 15 is restored to the locking state to ensure that the closed end 11 and the protective end 31 are in the open state, forming a stable working space. Then, the surgical suture 200 is placed in the suture traction mechanism 21-1, and the needle body 21 moves through the guide channel 13-1 to pierce the flexible material of the puncture window 11-1. When the needle tip 21-2 presses against the baffle 31-31 of the groove-shaped protective mechanism 31-3, the needle body 21 can no longer move forward. Figure 6-4 At this time, the needle body 21 is withdrawn, and the surgical suture 200 is retained in the thread fixing mechanism 11-11 made of the flexible material of the puncture window 11-1, and the distal end remains in the body. The other end of the surgical suture 200 is inserted into the body using the needle body 21 in the same way, and then the locking state of the locking switch 15 is released, and the handle 14 is pushed forward, and the closed end 11 clamps and closes the end of the surgical suture 200 remaining in the body, and the locking state of the locking switch 15 is restored. The closure device 1 is withdrawn from the body, and then the locking state of the locking switch 15 is released, and the closed end 11 is opened, and the end of the surgical suture 200 brought out of the body by the closed end 11 is released, and the surgical suture 200 is knotted in vitro, that is, the fascia suturing process is completed.

[0150] In this embodiment, a guardrail 31-32 is provided around the baffle 31-31 of the groove-shaped protection mechanism 31-3, and the guardrail 31-32 can ensure that the movement range of the needle tip 21-2 is limited within the guardrail 31-32, effectively preventing the needle tip 21-2 from accidentally slipping out and causing accidental damage to surrounding tissues or organs, making clinical use safer.

[0151] Embodiment 4: Suture retractor with safety protection mechanism Fascia closure device with safety protection mechanism of the present invention

[0152] refer to Figure 7 to Figure 7-2 The difference between this embodiment and embodiment 1 is that, in this embodiment, the safety protection mechanism 3 is the blunt-tip telescopic safety protection mechanism 302, which is arranged on the suture puller 2; the safety protection mechanism 3 includes a protective blunt head 35 and a motion control end 34; the protective blunt head 35 is arranged at the distal end of the needle body 21.

[0153] refer to Figure 7 and Figure 7-1The needle body 21 of the suture tractor 2 includes an inner needle 211 and an outer needle 212, the outer needle 212 is provided with a suture traction mechanism 21-1, the distal end of the inner needle 211 is a smooth blunt head, constituting the protective blunt head 35; the distal end of the outer needle 212 is a needle tip 21-2; the motion control end 34 includes a safety spring 34-1 and a safety spring rear positioning member 34-2; the safety spring 34-1 is installed between the safety spring rear positioning member 34-2 and the inner needle 211; when the safety spring 34-1 is compressed, the needle tip 21-2 of the outer needle 212 is exposed for puncture; after the puncture is completed, under the elastic force of the safety spring 34-1, the protective blunt head 35 at the distal end of the inner needle 211 extends out of the needle tip 21-2 of the outer needle 212, playing a safety protection role and avoiding accidental damage to the front tissue.

[0154] When used clinically, refer to Figure 7 First, put the closer 1 in a closed state and insert it into the incision, then rotate the handle 14 to release the locked state of the locking switch 15 of the closer 1, pull the handle 14 backward, the closed end 11 opens, and then restore the locking switch 15 to the locked state to ensure that the closed end 11 is in an open state. Then, the surgical suture 200 is placed in the suture traction mechanism 21-1, and then the needle body 21 moves through the guide channel 13-1. When it hits the thread fixing mechanism 11-11 of the puncture window 11-1, the safety spring 34-1 is compressed under the action of external force, and the needle tip 21-2 of the outer needle 212 is exposed, piercing the thread fixing mechanism made of flexible material of the puncture window 11-1. After the puncture is completed, under the elastic force of the safety spring 34-1, the protective blunt head 35 at the distal end of the inner needle 211 extends out of the needle tip 21-2 of the outer needle 212, playing a safety protection role and avoiding accidental damage to the front tissue. Figure 7-2 . At this time, the needle body 21 is withdrawn, and the surgical suture 200 is retained in the thread fixing mechanism 11-11 made of the flexible material of the puncture window 11-1, and the distal end remains in the body. The other end of the surgical suture 200 is inserted into the body using the needle body 21 in the same way, and then the locking state of the locking switch 15 is released, and the handle 14 is pushed forward. The closed end 11 clamps and closes the end of the surgical suture 200 remaining in the body, and the locking state of the locking switch 15 is restored. The closer 1 is withdrawn from the body, and then the locking state of the locking switch 15 is released, and the closed end 11 is opened. The end of the surgical suture 200 brought out of the body by the closed end 11 is released, and the surgical suture 200 is knotted outside the body, and the fascia suturing process is completed.

[0155] In this embodiment, since the needle body 21 is designed as an inner and outer needle structure, the safety protection function of the fascia suturing process is realized through the coordinated action of the inner and outer needles. The structure of the closure device 1 is very simple. At the same time, due to the design of the safety spring, after piercing the elastic material of the puncture window, under the action of the safety spring 34-1, the inner needle 211 will automatically reset to form a safety protection for the distal end of the needle body 21, the clinical use process is very convenient, and the safety protection effect is good.

[0156] Embodiment 5: The fascia closure device with a safety protection mechanism of the present invention with a combined safety protection mechanism

[0157] refer to Figures 8 to 12 In this embodiment, the safety protection mechanism 3 is a combination of the baffle type safety protection mechanism 301 and the puncture protection type safety protection mechanism 303.

[0158] refer to Figure 8 to Figure 11-3 The baffle-type safety protection mechanism 301 is arranged at the far end of the closer 1, including a protection end 31 and a connection end 32; the protection end 31 is a convex step protection mechanism 31-2, and the convex step protection mechanism 31-2 includes a protection convex step 31-21; the connection end 32 includes an axis mounting hole 32-3 and a limiting slide groove 32-4, and a positioning axis 13-5 and a limiting slider 13-6 are provided on the shell 13; the positioning axis 13-5 is embedded in the axis mounting hole 32-3, and the limiting slider 13-6 is embedded in the limiting slide groove 32-4; ​​the connection end 32 rotates around the positioning axis 13-5, driving the slider 13-6 to slide back and forth in the limiting slide groove 32-4, so as to realize the opening and closing of the protection end 31; the slider 13-6 and the limiting slide groove 32-4 constitute a limiting mechanism 33.

[0159] The protective convex step 31-21 has a smooth end surface, so that when the protective end 31 of the safety protection mechanism 3 is opened and closed, the smooth end surface can easily push the surrounding tissue outward, and the protective convex step 31-21 will not cause accidental scratches to the surrounding tissue.

[0160] The puncture protection type safety protection mechanism 303 includes a protection cover 36; an opening 36-1 is provided on the protection cover 36, and an upper wire-off groove 36-11 is provided on the side of the opening 36-1. The opening 36-1 can overlap with the entrance 13-11 of the guide channel 13-1 provided on the shell 13 only when the closed end 11 is opened and locked, and the upper wire-off groove 36-11 overlaps with the wire-off groove 13-12 on the side of the entrance 13-11. Fig.11 and Figure 11-1 , the needle body 21 can enter the guide channel 13 - 1 through the opening 36 - 1 and enter the human body along the guide channel 13 - 1 .

[0161] The protective cover 36 comprises a cover plate 36-2 and a rotating end 36-3; the cover plate 36-2 is provided with the opening 36-1, the side of the opening 36-1 is provided with an upper de-wire groove 36-11, the rotating end 36-3 is provided with a motion groove 36-4, the motion groove 36-4 comprises a rotational motion groove 36-41 and a vertical motion groove 36-42; the protective cover 36 is provided with a mounting channel 36-5 inside, the protective cover 36 is embedded in the proximal end of the shell 13 through the mounting channel 36-5, and can rotate around the shell 13; the handle 14 is provided with a motion mechanism 14-1 on the outside, the motion mechanism 14-1 is provided with a motion block 14-11, the motion block 14-11 can be embedded in the motion groove 36-4, when the handle 14 moves, the motion block 14-1 1 can rotate horizontally along the rotational motion groove 36-41, or move vertically along the vertical motion groove 36-42; when the handle 14 is pulled toward the proximal end, driving the motion block 14-11 to move vertically toward the proximal end to the end of the vertical motion groove 36-42, the handle 14 is rotated, and the motion block 14-11 will drive the protective cover 36 to rotate, and the opening 36-1 will gradually overlap with the entrance 13-11 of the guide channel 13-1 of the shell 13 as the protective cover 36 rotates. When the handle 14 is rotated to the locked state, the entrance 13-11 is opened, and the upper de-threading groove 36-11 overlaps with the de-threading groove 13-12 on the side of the entrance 13-11. At this time, the needle body 21-1 can enter the human body through the guide channel 13-1.

[0162] When used clinically, refer to Figure 8 to Figure 8-3 First, close the closed end 11, then rotate the handle 14, the movement block 14-11 slides along the rotational movement groove 36-41 to the end, locking the closed end 11. At this time, the protective cover 36 does not rotate, and the opening 36-1 of the protective cover 36 closes the entrance 13-1 of the guide channel 13. At this time, insert the closed end 11 into the body through the incision, and then rotate the handle 14 in the opposite direction, the movement block 14-11 retreats along the rotational movement groove 36-41 to the initial position of the rotational movement groove 36-41, and the locking state of the closed state of the closed end 11 is released. Figure 9 to Figure 9-3 At this time, the protective cover 36 does not rotate, and the opening 36-1 of the protective cover 36 still closes the entrance 13-1 of the guide channel 13. Then the handle 14 is pulled upward, and the closed end 11 opens. At this time, the connecting end 32 rotates around the positioning shaft 13-5, driving the slider 13-6 to slide in the limiting slide groove 32-4, and the protective end 31 opens. A working space is formed between the groove-shaped protective mechanism 31-3 and the closed end 11. Figure 10 to Figure 10-4 The handle 14 is then rotated, and the motion block 14-11 pushes the protective cover 36 to rotate, and the opening 36-1 gradually approaches and overlaps the entrance 13-1 of the guide channel 13, and the entrance 13-1 of the guide channel 13 is gradually opened until the closed end 14 is in a locked state. At this time, the closed end 11 and the protective end 31 are in a locked open state, forming a stable working space, and the opening 36-1 of the protective cover 36 and the entrance 13-1 of the guide channel 13 are completely overlapped, and the entrance 13-1 of the guide channel 13 is completely open, and the upper de-wire groove 36-11 overlaps with the de-wire groove 13-12 on the side of the entrance 13-11. Figure 11 to Figure 11-3 Then, refer to Fig.12 , the surgical suture 200 is placed in the suture traction mechanism 21-1, the needle body 21 moves through the guide channel 13-1, and pierces the flexible material of the puncture window 11-1. When the needle tip 21-2 presses against the convex step protection mechanism 31-2, the needle body 21 can no longer move forward. At this time, the needle body 21 is withdrawn, and the surgical suture 200 is retained in the thread fixing mechanism 11-11 made of the flexible material of the puncture window 11-1, and the distal end stays in the body. The other end of the surgical suture 200 is placed in the body using the needle body 21 in the same way, and then the surgical suture 200 is removed from the thread stripping groove 13-12 and the upper thread stripping groove 36-11, and the handle 14 is rotated in the opposite direction. The moving block 14-11 drives the protection cover 36 to move in the opposite direction, and the locking state of the locking switch 15 is released. At the same time, the entrance 13-1 of the guide channel 13 is closed. Then, the handle 14 is pushed forward, and the movement block 14-11 moves along the vertical movement groove 36-42. The closed end 11 clamps and closes the end of the surgical suture 200 remaining in the body. Then, the handle 14 is rotated, and the movement block 14-11 moves along the rotational movement groove 36-41 to restore the locking state of the locking switch 15, and the closer 1 is withdrawn from the body. Then, the locking state of the locking switch 15 is released, and the closed end 11 is opened to release the end of the surgical suture 200 brought out of the body by the closed end 11. The surgical suture 200 is knotted outside the body, and the fascia suturing process is completed.

[0163] refer to Fig.13 and Fig.14In order to ensure the stability and accuracy of the switching between each state of the closer 1, especially to ensure the overlap between the opening 36-1 and the guide channel entrance 13-11 and the overlap between the upper off-line groove 36-11 and the off-line groove 13-12, a symmetrical positioning column 13-7 is provided at the proximal end of the shell 13, and a corresponding positioning groove 36-31 is provided on the inner side of the rotating end 36-3 of the protective cover 36, and the positioning column 13-4 can be embedded in the positioning groove 36-31 to form a positioning.

[0164] refer to Fig.15 and Figure 15-1 When the handle 14 is pulled backward to open the closed end 11, the handle 14 continues to rotate, and the moving block 14-11 drives the rotating end 36-3 to rotate. When the rotating end 36-3 rotates to the closed end 11 in an open and locked state, the positioning column 13-4 is embedded in the positioning groove 36-31 to form a position, and the protective cover 36 no longer moves. At this time, the opening 36-1 overlaps with the guide channel entrance 13-11, and the upper de-threading groove 36-11 overlaps with the de-threading groove 13-12. Since the positioning column 13-4 can be embedded in the positioning groove 36-31 to form a position, the protective cover 36 no longer rotates, the guide channel 13-1 is in a stable open state, and the needle body 21 can be easily punctured into the body through the guide channel 13-1.

[0165] refer to Figure 15-2 and Figure 15-3 When the puncture is completed and the closer 1 needs to be withdrawn from the body, when the handle 14 moves in the reverse direction, under the action of external force, the positioning column 13-4 slides out of the positioning groove 36-31, and the rotating end 36-3 rotates in the reverse direction around the shell 13, and the entrance 13-11 of the guide channel 13-1 is closed. When the closed end 11 returns to the open and unlocked state, the positioning column 13-4 is embedded in the adjacent positioning groove 36-31 to form a positioning again. At this time, the protective cover 36 no longer moves with the vertical movement of the handle 14, ensuring that the guide channel 13-1 is in a closed state.

[0166] In this embodiment, the baffle-type safety protection mechanism 301 can prevent accidental damage to surrounding tissues or organs due to excessive puncture depth during the puncture process of the needle body 21. The puncture protection type safety protection mechanism 303 can prevent the needle body 21 from accidentally piercing into the body when the closed end 11 is closed or the closed end 11 is opened and unlocked.

[0167] In practical applications, the blunt-tip telescopic safety protection mechanism 302 and the puncture protection type safety protection mechanism 303 can be used in combination, or the baffle type safety protection mechanism 301, the blunt-tip telescopic safety protection mechanism 302 and the puncture protection type safety protection mechanism 303 can be used in combination. Alternatively, other various forms of safety protection mechanisms designed by those skilled in the art as required can be used in combination, and the applicant will not give examples one by one here, but they do not deviate from the protection scope of this application.

[0168] It should be noted that the structures disclosed and described herein can be replaced by other structures with the same effect, and the embodiments introduced in the present invention are not the only structures for implementing the present invention. Although the preferred embodiments of the present invention have been introduced and described herein, it is clear to those skilled in the art that these embodiments are only examples, and those skilled in the art can make countless changes, improvements and substitutions without departing from the present invention. Therefore, the protection scope of the present invention should be limited according to the spirit and scope of the claims attached to the present invention.

Claims

1. A fascia closure device with a safety protection mechanism, the fascia closure device with a safety protection mechanism (100) comprising a closure device (1), a suture retractor (2) and a safety protection mechanism (3); characterized in that: A. The closer (1) comprises a closing end (11), a connecting rod (12), a shell (13) and a handle (14); the closing end (11) is connected to the distal ends of the connecting rod (12) and the shell (13); the proximal end of the connecting rod (12) is connected to the handle (14); the opening and closing of the closing end (11) can be controlled by manipulating the handle (14); B. The suture traction device (2) comprises a needle body (21) and a gripping portion (22), wherein the needle body (21) is provided with a suture traction mechanism (21-1), and the suture traction mechanism (21-1) can pull the surgical suture (200) into the body; C. When the closing end (11) is in a closed state, the end of the surgical suture (200) can be clamped, and when the closure device (1) is withdrawn from the body, the closing end (11) can bring the end of the surgical suture (200) out of the body; D. The safety protection mechanism (3) is a puncture protection type safety protection mechanism (303) for preventing the needle body (21) of the suture tractor (2) from accidentally piercing into the body when the closed end (11) is in a closed state; the puncture protection type safety protection mechanism (303) is arranged on the closure device (1) or the suture tractor (2), and the puncture protection type safety protection mechanism (303) can prevent the needle tip (21-2) of the needle body (21) from causing accidental damage to human tissue or organs; the safety protection mechanism (3) includes a protection cover (36); the protection cover (36) is provided with An opening (36-1) is provided, and an upper thread-release groove (36-11) is provided on the side of the opening (36-1). The opening (36-1) can overlap with the entrance (13-11) of the guide channel (13-1) provided on the housing (13) only when the closed end (11) is opened and locked. The upper thread-release groove (36-11) overlaps with the thread-release groove (13-12) on the side of the entrance (13-11). The needle body (21) can enter the guide channel (13-1) through the opening (36-1) and enter the human body along the guide channel (13-1).

2. The fascia closure device with a safety protection mechanism according to claim 1, characterized in that: The safety protection mechanism (3) further comprises a baffle-type safety protection mechanism (301) and / or a blunt-tip telescopic safety protection mechanism (302) for protecting the needle tip (21-2) from accidentally damaging surrounding human tissues or organs in a puncture state.

3. The fascia closure device with a safety protection mechanism according to claim 2, characterized in that: The baffle-type safety protection mechanism (301) is arranged at the far end of the closer (1), and the baffle-type safety protection mechanism (301) comprises a protection end (31) and a connection end (32).

4. The fascia closure device with a safety protection mechanism according to claim 3, characterized in that: The protection end (31) of the baffle-type safety protection mechanism (301) is a plate-shaped protection mechanism (31-1), a convex step protection mechanism (31-2) or a groove-shaped protection mechanism (31-3).

5. The fascia closure device with a safety protection mechanism according to claim 3, characterized in that: The protective end (31) is made of a rigid material.

6. The fascia closure device with a safety protection mechanism according to claim 3, characterized in that: The connection end (32) of the baffle-type safety protection mechanism (301) is connected to the closer (1) via an axis connection mechanism, a hinge mechanism, a slide groove mechanism, a concave-convex snap-fit ​​mechanism, or a threaded mechanism.

7. The fascia closure device with a safety protection mechanism according to claim 3, characterized in that: The baffle-type safety protection mechanism (301) is also provided with a limiting mechanism (33).

8. The fascia closure device with a safety protection mechanism according to claim 2, characterized in that: The blunt-tip telescopic safety protection mechanism (302) is arranged on the suture tractor (2), and the blunt-tip telescopic safety protection mechanism (302) comprises a protective blunt tip (35) and a motion control end (34); the protective blunt tip (35) is arranged at the distal end of the needle body (21).

9. The fascia closure device with a safety protection mechanism according to claim 1, characterized in that: The closed end (11) is provided with a puncture window (11-1), and the needle body (21) of the suture tractor (2) can enter the human body through the puncture window (11-1).

10. The fascia closure device with a safety protection mechanism according to claim 9, characterized in that: The puncture window (11-1) is provided with a wire fixing mechanism (11-11) made of a flexible material.

11. The fascia closure device with a safety protection mechanism according to claim 10, characterized in that: The flexible material is silicone, or thermoplastic elastomer (TPE), or thermoplastic polyurethane elastomer rubber (TPU).

12. The fascia closure device with a safety protection mechanism according to claim 1, characterized in that: The housing (13) is provided with a guide channel (13-1); the needle body (21) can enter the guide channel (13-1) along an entrance (13-11) of the guide channel (13-1) and move along the guide channel (13-1); and a wire stripping groove (13-12) is provided on a side of the entrance (13-11).

13. The fascia closure device with a safety protection mechanism according to claim 1, characterized in that: The housing (13) is also provided with a mounting through hole (13-2), and the connecting rod (12) is mounted in the mounting through hole (13-2).

14. The fascia closure device with a safety protection mechanism according to claim 1, characterized in that: A protective boss (13-3) is provided at the proximal end of the housing (13).

15. The fascia closure device with a safety protection mechanism according to claim 1, characterized in that: The closer (1) is also provided with a locking switch (15).

16. The fascia closure device with a safety protection mechanism according to claim 1, characterized in that: A depth control plate (13-4) is also provided at the distal end of the housing (13) of the closer (1).

17. The fascia closure device with a safety protection mechanism according to claim 3, characterized in that: The protection end (31) of the baffle-type safety protection mechanism (301) is a plate-shaped protection mechanism (31-1), and the plate-shaped protection mechanism (31-1) comprises a protection plate (31-11); the connection end (32) comprises a connection shaft (32-1) and a limit block (32-2), and a limit groove (11-2) and a connection hole (11-3) are provided on the outer side of the closed end (11); the limit block (32-2) is embedded in the limit groove (11-2), and the connection shaft (32-1) is embedded in the connection hole (11-3) to form an axial connection; the connection end (32) rotates around the connection shaft (32-1) to realize the opening and closing of the plate-shaped protection mechanism (31-1); the limit block (32-2) and the limit groove (11-2) constitute a limit mechanism (33).

18. The fascia closure device with a safety protection mechanism according to claim 3, characterized in that: The protection end (31) of the baffle-type safety protection mechanism (301) is a convex step protection mechanism (31-2), and the convex step protection mechanism (31-2) includes a protection convex step (31-21); the connection end (32) includes a shaft mounting hole (32-3) and a limiting slide groove (32-4), and the housing (13) is provided with a positioning shaft (13-5) and a limiting slide block (13-6); the positioning shaft (13-5) is embedded in the shaft mounting hole (32-3), and the limiting slide block (13-6) is embedded in the limiting slide groove (32-4); the connection end (32) rotates around the positioning shaft (13-5), driving the limiting slide block (13-6) to slide back and forth in the limiting slide groove (32-4), thereby realizing the opening and closing of the protection end (31); the limiting slide block (13-6) and the limiting slide groove (32-4) constitute a limiting mechanism (33).

19. The fascia closure device with a safety protection mechanism according to claim 3, characterized in that: The protection end (31) of the baffle-type safety protection mechanism (301) is a groove-shaped protection mechanism (31-3), and the groove-shaped protection mechanism (31-3) comprises a baffle (31-31), a guardrail (31-32), and a positioning pin (31-33); the connection end (32) comprises a shaft mounting hole (32-3), and the housing (13) is provided with a positioning shaft (13-5); the limiting mechanism (33) of the baffle-type safety protection mechanism (301) comprises a pull rod (33-1) and a first sliding block (33-2), and the two ends of the pull rod (33-1) are respectively provided with positioning grooves (33-1 1) and a slide groove (33-12), the first slide block (33-2) is arranged on the outside of the closed end (11); the positioning shaft (13-5) is embedded in the shaft mounting hole (32-3), the positioning pin (31-33) is embedded in the positioning groove (33-11), and the first slide block (33-2) is embedded in the slide groove (33-12); when the closed end (11) is opened, the first slide block (33-2) moves along the slide groove (33-12), driving the protective end (31) to rotate and open around the positioning shaft (13-5).

20. The fascia closure device with a safety protection mechanism according to claim 8, characterized in that: The needle body (21) of the suture traction device (2) comprises an inner needle (211) and an outer needle (212); the outer needle (212) is provided with a suture traction mechanism (21-1); the distal end of the inner needle (211) is a smooth blunt head, constituting the protective blunt head (35); the distal end of the outer needle (212) is a needle tip (21-2); the motion control end (34) comprises a safety spring (34-1) and a safety spring rear positioning member (34-2); the safety spring (34-1) is installed between the rear positioning piece (34-2) of the safety spring and the inner needle (211); when the safety spring (34-1) is compressed, the needle tip (21-2) of the outer needle (212) is exposed for puncture; after the puncture is completed, under the elastic force of the safety spring (34-1), the protective blunt head (35) at the distal end of the inner needle (211) extends out of the needle tip (21-2) of the outer needle (212), thereby playing a safety protection role and avoiding accidental damage to the front tissue.

21. The fascia closure device with a safety protection mechanism according to claim 1, characterized in that: The protective cover (36) comprises a cover plate (36-2) and a rotating end (36-3); the cover plate (36-2) is provided with the opening (36-1), the side of the opening (36-1) is provided with an upper de-wire groove (36-11), the rotating end (36-3) is provided with a motion groove (36-4), the motion groove (36-4) comprises a rotational motion groove (36-41) and a vertical motion groove (36-42); the protective cover (36) is provided with a mounting channel (36-5) inside, the protective cover (36) is embedded in the proximal end of the shell (13) through the mounting channel (36-5), and rotates around the shell (13); the handle (14) is provided with a motion mechanism (14-1) on the outside, the motion mechanism (14-1) is provided with a motion block (14-11), the motion block (14-11) is embedded in the motion groove (36-4), and when the handle (14) moves, the motion block (14-11) is embedded in the motion groove (36-4). The block (14-11) rotates horizontally along the rotational motion groove (36-41), or moves vertically along the vertical motion groove (36-42); when the handle (14) is pulled toward the proximal end, driving the motion block (14-11) to move vertically toward the proximal end to the end of the vertical motion groove (36-42), the handle (14) is rotated, and the motion block (14-11) drives the protective cover (36) to rotate, and the opening (36 -1) As the protective cover (36) rotates, it gradually overlaps with the entrance (13-11) of the guide channel (13-1) of the housing (13); when the handle (14) is rotated to a locked state, the entrance (13-11) is opened, and the upper de-threading groove (36-11) overlaps with the de-threading groove (13-12) on the side of the entrance (13-11); at this time, the needle body (21) enters the human body through the guide channel (13-1).

22. The fascia closure device with a safety protection mechanism according to claim 2, characterized in that: The safety protection mechanism (3) comprises the baffle-type safety protection mechanism (301) and the puncture protection type safety protection mechanism (303); the baffle-type safety protection mechanism (301) is arranged at the distal end of the closer (1), and comprises a protection end (31) and a connection end (32); the protection end (31) is a convex step protection mechanism (31-2), and the convex step protection mechanism (31-2) comprises a protection convex step (31-21); the connection end (32) comprises a shaft mounting hole (32-3) and a limiting slide groove (32-4); the housing (13) is provided with A positioning shaft (13-5) and a limiting slide block (13-6) are provided; the positioning shaft (13-5) is embedded in the shaft mounting hole (32-3), and the limiting slide block (13-6) is embedded in the limiting slide groove (32-4); the connecting end (32) rotates around the positioning shaft (13-5), driving the limiting slide block (13-6) to slide back and forth in the limiting slide groove (32-4), thereby realizing the opening and closing of the protective end (31); the limiting slide block (13-6) and the limiting slide groove (32-4) constitute a limiting mechanism (33).

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