Suture device

Abstract

Disclosed is a suture device. The suture device comprises a driving member and a suture mechanism. The driving member is connected to the suture mechanism and configured to drive the suture mechanism to move to execute a suture operation. The suture mechanism comprises a suture needle and a suture thread. The suture device further comprises an energy storage assembly, a thread disengaging member, and a stopper. The energy storage assembly is connected to the thread disengaging member and configured to provide a force for the thread disengaging member. The stopper has an initial state and a clearance state. In the initial state, the stopper stops the thread disengaging member. The driving member comprises a switching structure, and in response to the movement of the driving member, the switching structure clears the stop of the thread disengaging member by the stopper, such that the stopper is switched from the initial state to the clearance state. In the clearance state, the thread disengaging member is pushed by the force of the energy storage assembly to move to a preset position, and holds the suture needle to disengage the suture thread from the suture needle after the suture mechanism completes the suture operation, thereby solving the problem that the suture devices are readily affected by manual operation and thus disabled.

Description

stapler

[0001] This application claims priority to Chinese Patent Application No. 202410039997.5 filed on January 10, 2024, and the contents of the above-mentioned Chinese patent application disclosure are hereby incorporated by reference in their entirety as a part of this application. Technical Field

[0002] Embodiments of the present disclosure relate to a stapler. Background Art

[0003] Laparoscopic surgery has become widely accepted in surgical procedures. In minimally invasive laparoscopic surgery, the surgeon typically makes a small incision in the patient's abdomen. The surgeon then aligns the puncture tip of a trocar with the incision and rotates it back and forth, moving the trocar downward. This allows the puncture core assembly to guide the puncture cannula through the patient's abdominal skin. The surgeon then removes the puncture core assembly and uses the trocar cannula to inflate the abdominal cavity to achieve and maintain pneumoperitoneum.

[0004] Summary of the Invention

[0005] The embodiments of the present disclosure aim to provide a stapler that solves the problem that the stapler is easily affected by human operation and cannot be used normally.

[0006] The present disclosure is achieved through the following technical solutions:

[0007] A suturing device includes a driving member and a suturing mechanism, wherein the driving member is connected to the suturing mechanism and is configured to drive the suturing mechanism to move and perform a suturing operation, wherein the suturing mechanism includes a suturing needle and a suturing thread, and the suturing device also includes an energy storage assembly, a thread stripping member and a clutch member, wherein the energy storage assembly is connected to the thread stripping member and is configured to provide a force to the thread stripping member; the clutch member has an initial state and an avoidance state, and in the initial state, the clutch member and the thread stripping member are limited and stopped; the driving member includes a switching structure, and in response to the movement of the driving member, the switching structure releases the limit stops of the clutch member and the thread stripping member, so that the clutch member switches from the initial state to the avoidance state; in the avoidance state, the thread stripping member moves to a preset position under the action of the energy storage assembly, thereby clamping the suturing needle to separate the suture thread from the suturing needle after the suturing mechanism completes the suturing operation.

[0008] In some embodiments, the energy storage assembly includes a first elastic member, one end of which abuts against the off-line member, and the other end is fixed to the mounting seat of the suture device, and in the initial state, the first elastic member is in a compressed state; in the avoidance state, the energy storage assembly is released to drive the off-line member to move.

[0009] In some embodiments, the stapler further includes a base, the clutch is movably connected to the base, and the driving member is configured to drive the clutch to move through a switching structure so that the clutch switches from an initial state to an avoidance state.

[0010] In some embodiments, the stapler further comprises a first pin, and the clutch is connected to the base via the first pin; the clutch rotates relative to the first pin or moves along the first pin to switch from an initial state to an avoidance state.

[0011] In some embodiments, the switching structure includes an avoidance recess, which is opened on the side of the driving member; the clutch member includes a first end and a second end, and in an initial state, the first end abuts against the off-line member, and the second end abuts against the driving member; in response to the driving member moving toward the distal end, the second end enters the avoidance recess, and under the push of the force of the energy storage component, the clutch member rotates a preset angle to release the limit stop on the off-line member.

[0012] In some embodiments, the switching structure includes a protrusion, which protrudes from the side of the driving member. In the initial state, the proximal end of the clutch member abuts against the off-line member; in response to the driving member moving toward the distal end, the protrusion drives the clutch member to move to avoid the off-line member, thereby releasing the restrictive stop on the off-line member.

[0013] In some embodiments, the suturing device further comprises a second elastic member, one end of the second elastic member abuts against the clutch member, and the other end of the second elastic member is fixed to the base, providing a force for the clutch member to maintain the clutch member in an initial state.

[0014] In some embodiments, the protrusion has an extrusion inclined surface, and the proximal end of the clutch member has a pressure-bearing inclined surface that matches the extrusion inclined surface.

[0015] In some embodiments, the off-line member has a notch portion, and after the protrusion drives the clutch member to move a preset distance, the clutch member moves to the notch portion so that the clutch member avoids the off-line member.

[0016] In some embodiments, the energy storage assembly further includes a stop sleeve, which is sleeved on the driving member and connected to the mounting seat of the stapler, and the other end of the first elastic member is fixed to the distal end of the stop sleeve.

[0017] In some embodiments, the de-threading member includes a main body and a baffle, the clutch member and the main body are limited and stopped, the baffle is arranged on the main body, and has an opening for holding the suture needle.

[0018] In some embodiments, the suturing mechanism further comprises a needle sleeve, which is detachably connected to the suturing needle, and the needle sleeve has an axial hole and a radial hole connected to the axial hole, the suture thread passes through the radial hole and the suture needle extends into the axial hole to press the suture thread; in the avoidance state, the suture stripping piece moves to a preset position and forms a limit stop with the needle sleeve, thereby separating the suture thread from the suture needle after the suturing mechanism completes the suturing operation.

[0019] In some embodiments, the driving member further includes a first driving portion and a second driving portion, and the first driving portion and the second driving portion are spaced apart at the distal end of the driving member. The first driving portion is connected to the wing drive of the suturing mechanism to drive the wing to move from a closed position to an open position, and the second driving portion is connected to the suturing needle drive to drive the suturing needle to perform the needle-out action and the needle-back action. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] FIG1 is a schematic structural diagram of a stapler according to an embodiment of the present disclosure;

[0021] FIG2 is an exploded view of a stapler according to an embodiment of the present disclosure;

[0022] FIG3 is a schematic structural diagram of a suturing mechanism according to an embodiment of the present disclosure;

[0023] FIG4 is an exploded view of a clutch member according to an embodiment of the present disclosure;

[0024] FIG5 is a schematic structural diagram of the connection between the driving member and the suturing mechanism according to an embodiment of the present disclosure;

[0025] FIG6 is a schematic structural diagram of an energy storage assembly according to an embodiment of the present disclosure;

[0026] FIG7 is a schematic structural diagram of an angle of the distal end of a driving member according to an embodiment of the present disclosure;

[0027] FIG8 is a schematic structural diagram of the distal end of the driving member according to another embodiment of the present disclosure;

[0028] FIG9 is a schematic structural diagram of the distal end of the driving member according to another embodiment of the present disclosure;

[0029] FIG10 is a schematic structural diagram of a clutch member according to an embodiment of the present disclosure at one angle;

[0030] FIG11 is a schematic structural diagram of a clutch member according to an embodiment of the present disclosure from another angle;

[0031] FIG12 is a schematic structural diagram of a de-threading member at an angle according to an embodiment of the present disclosure;

[0032] FIG13 is a schematic structural diagram of the de-threading member from another angle according to an embodiment of the present disclosure;

[0033] FIG14 is a schematic structural diagram of a clutch member in an initial state according to an embodiment of the present disclosure;

[0034] FIG15 is a schematic structural diagram of a clutch member entering an avoidance recess according to an embodiment of the present disclosure;

[0035] FIG16 is a schematic structural diagram of a clutch member in an avoidance state according to an embodiment of the present disclosure;

[0036] FIG17 is a schematic structural diagram of a suture needle stuck by a thread-off member according to an embodiment of the present disclosure;

[0037] FIG18 is a schematic structural diagram of a suture thread being separated from a suture needle by a thread-removing member according to an embodiment of the present disclosure;

[0038] FIG19 is an exploded view of a clutch member according to another embodiment of the present disclosure;

[0039] FIG20 is a schematic structural diagram of the connection between a driving member and a suturing mechanism according to another embodiment of the present disclosure;

[0040] FIG21 is a schematic structural diagram of an energy storage assembly according to another embodiment of the present disclosure;

[0041] FIG22 is a schematic structural diagram of an angle of the distal end of a driving member according to another embodiment of the present disclosure;

[0042] FIG23 is a schematic structural diagram of the distal end of a driving member according to another embodiment of the present disclosure from another angle;

[0043] FIG24 is a schematic structural diagram of the distal end of a driving member according to another embodiment of the present disclosure from another angle;

[0044] FIG25 is a schematic structural diagram of a clutch member according to another embodiment of the present disclosure at one angle;

[0045] FIG26 is a schematic structural diagram of a clutch member according to another embodiment of the present disclosure from another angle;

[0046] FIG27 is a schematic structural diagram of a de-threading member at an angle according to another embodiment of the present disclosure;

[0047] FIG28 is a schematic structural diagram of a de-threading member from another angle according to another embodiment of the present disclosure;

[0048] FIG29 is a schematic structural diagram of a clutch member in an initial state according to another embodiment of the present disclosure;

[0049] FIG30 is a schematic structural diagram of another embodiment of the present disclosure wherein a protrusion moves to a clutch member;

[0050] FIG31 is a schematic structural diagram of a clutch member in an avoidance state according to another embodiment of the present disclosure;

[0051] FIG32 is a schematic structural diagram of a thread-stripping member jamming a suture needle according to another embodiment of the present disclosure;

[0052] 33 is a schematic structural diagram of a suture thread being separated from a suture needle by a thread-detaching member according to another embodiment of the present disclosure;

[0053] FIG34 is a schematic structural diagram of a suture needle according to an embodiment of the present disclosure.

[0054] The above drawings include the following reference numerals:

[0055] 10. Driving member; 11. Avoidance recess; 12. Raised portion; 121. Extrusion slope; 13. First tooth portion; 14. Second tooth portion; 15. First driving portion; 16. Second driving portion; 20. Off-line member; 21. Main body; 211. Third surface; 212. Notch portion; 213. Middle opening; 214. Annular portion; 22. Blocking piece; 221. Opening; 30. Clutch member; 31. Through hole; 32. First surface; 33. Second surface; 34. Pressure-bearing slope; 35. Avoidance notch; 40. First elastic member; 50. Base; 60. First pin; 70. Second elastic member; 80. Stop sleeve; 90. Core rod assembly; 91. Needle retention port; 92. Needle outlet; 100. Push-pull button; 110. Knob; 120. Positioning member; 130. Wing; 131. First gear; 140. Suture needle; 141. Transmission rod; 142. Suture arm; 1421. Suture needle; 1422. Reduced diameter section; 143. Second gear; 144. Abutment step; 150. Needle sleeve; 160. Suture thread; 170. Storage member; 180. Second pin shaft; 190. Third pin shaft; 200. Mounting seat; 210. Energy storage assembly; 220. Limiting member; 400. Suture mechanism; 1000. Suture device. DETAILED DESCRIPTION

[0056] In order to make the purpose, technical solutions and advantages of the present disclosure more clearly understood, the present disclosure is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present disclosure and are not intended to limit the present disclosure. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present disclosure.

[0057] It should be understood that the terms "proximal end" and "distal end" used herein are based on the relative positions of the stapler 1000 and the user. Specifically, the end closer to the user is the "proximal end" and the end away from the user is the "distal end".

[0058] In the present disclosure, unless otherwise clearly stipulated and limited, the terms such as "connected" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, a movably connection, or an integral body; it can be directly connected, or indirectly connected through an intermediate medium, or it can be internal communication between two elements or an interactive relationship between two elements such as abutment. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances. It should be noted that when there are qualifiers before "connected" and "connection", they have the meaning defined by the corresponding qualifiers, and only exclude situations that obviously need to be excluded, and do not exclude other possible situations. For example, "detachably connected" refers to a detachable connection, and does not include integration, but movably connected, etc. are not excluded.

[0059] In minimally invasive laparoscopic surgery, both the trocar cannula used to establish and maintain pneumoperitoneum and other trocar cannulas create a passage for instruments to enter and exit the abdominal cavity. Staplers and other surgical instruments can be passed through the trocar cannula to perform the procedure. After the procedure, the puncture hole must be sutured.

[0060] A conventional suturing device comprises a suturing needle and a suture thread, wherein the suturing needle has a split needle head, the suture thread is connected to the needle head, the suturing needle drives the suture thread through the abdominal wall tissue of the human body, and then enters the core rod assembly, at which time the needle head is separated from the main body of the suturing needle and is clamped by the thread-off component, so that the thread end of the suture thread remains in the core rod assembly, so that after the suturing needle is withdrawn and the suturing device is pulled out, the suture thread can be tightened, thereby suturing the puncture hole. However, the conventional technical solution for driving the thread-off component is complex, has many parts, low stability, and requires the user to apply additional force to drive the thread-off component, resulting in a poor user experience, and the force applied by each user is different. If some users apply less force, the thread-off component will not be triggered, which will lead to uncontrollable human operation and easily cause the suturing device to be unable to be used normally, so it is necessary to make improvements.

[0061] Referring to Figures 1 to 6 and Figures 14 to 18, the suture device 1000 includes a driver 10 and a suture mechanism 400, wherein the driver 10 is connected to the suture mechanism 400 and is configured to drive the suture mechanism 400 to move and perform a suture operation. The suture mechanism 400 includes a suture needle 140 and a suture thread 160. The suture device 1000 also includes an energy storage assembly 210, a thread-off member 20, and a clutch 30. The energy storage assembly 210 is connected to the thread-off member 20 and is configured to provide a force to the thread-off member 20. The clutch 30 has an initial state and an avoidance state. In the initial state, the clutch 30 and the de-threading member 20 are limited and stopped; the driving member 10 includes a switching structure. In response to the movement of the driving member 10, the switching structure releases the limit stops of the clutch 30 and the de-threading member 20, so that the clutch 30 switches from the initial state to the avoidance state; in the avoidance state, the de-threading member 20 moves to a preset position under the action of the energy storage assembly 210, thereby clamping the suture needle 140 to disengage the suture thread 160 from the suture needle 140 after the suture mechanism 400 completes the suture operation.

[0062] By providing a clutch 30 and providing a switching structure on the driving member 10, the clutch 30 can be switched between the initial state and the avoidance state, thereby causing the thread-off member 20 to be limited by the clutch 30 before the suturing mechanism 400 completes the needle-out action, and after the suturing mechanism 400 completes the needle-out action or when the needle-out action is performed, the limit stop between the clutch 30 and the thread-off member 20 is released, so that the thread-off member 20 moves a preset distance under the action of the energy storage component to clamp the suturing needle 140 to separate the suture thread 160 from the suturing needle 140. By providing the energy storage component 210, the normal triggering of the suturing device 1000 can be achieved without the user applying additional force, avoiding the uncontrollability of human operation, operating reliably and stably, and providing a good user experience, thereby ensuring the normal use of the suturing device 1000.

[0063] For example, in the initial state, the clutch 30 and the off-line member 20 are in a limited stop, and the energy storage assembly 210 is in a compressed state at this time; in the avoidance state, the energy storage assembly 210 is released to drive the off-line member 20 to move, and the off-line member 20 moves to a preset position under the force of the energy storage assembly 210. Through the above-mentioned arrangement, the energy storage assembly 210 provides an action force for the off-line member 20, so that the off-line member 20 is in a stressed state before and after being triggered, and has a rigid connection structure, thereby having high stability, ensuring that the off-line member 20 can be normally triggered to ultimately successfully complete the entire suturing operation, and ensuring the normal use of the suturing device 1000.

[0064] For example, referring to Figures 4 and 6, the energy storage assembly 210 includes a first elastic member 40. One end of the first elastic member 40 abuts against the off-line member 20, and the other end is fixed to the mounting base 200 of the suture device 1000, and in the initial state, the first elastic member 40 is in a compressed state. For example, the main body 21 of the off-line member 20 has a central opening 213 that avoids the driving member 10, and the first elastic member 40 abuts against the annular portion 214 at the proximal end of the main body 21. For example, the first elastic member 40 is sleeved on the driving member 10, so that the driving member 10 provides axial structural support for the first elastic member 40 and saves the internal space of the core rod assembly 90.

[0065] For example, the first elastic member 40 is a spring.

[0066] 4 , the stapler 1000 further includes a base 50. The clutch 30 is movably connected to the base 50, and the driving member 10 is configured to drive the clutch 30 to move through a switching structure so that the clutch 30 switches from an initial state to a retracted state.

[0067] For example, referring to Figures 4, 6, and 10-11, the suture device 1000 further includes a first pin 60, through which the clutch 30 is connected to the base 50. For example, the clutch 30 has a through hole 31, and the first pin 60 passes through the through hole 31 and is connected to the base 50 at both ends, so that the clutch 30 rotates relative to the first pin 60, thereby switching from the initial state to the avoidance state. For example, there are two bases 50, and the two bases 50 are connected by snapping together to form an installation space, and the wing 130 and suture needle 140 of the suturing mechanism 400, as well as at least a portion of the driver 10, are all accommodated within the installation space. Avoidance notches are respectively formed on both sides of the base 50, so that the wing 130 and suture needle 140 extend outside the base 50 through the avoidance notches. For example, the base 50 has a mounting hole, and the two ends of the first pin 60 extend into the mounting holes of the two bases 50.

[0068] For example, referring to Figures 5 and 7 to 9, the switching structure includes an avoidance recess 11, which is provided on the side of the driving member 10. In the initial state, the first end of the clutch member 30 abuts the off-line member 20, and the second end abuts the side of the driving member 10. In response to the distal movement of the driving member 10, the second end enters the avoidance recess 11. Under the force of the energy storage assembly 210, the clutch member 30 rotates relative to the first pin 60 by a preset angle to release the limit stop on the off-line member 20. Referring to Figures 10 to 11 and 13, the clutch member 30 is a rotating block with the first pin 60 as the rotating axis. The first surface 32 of the clutch member 30 abuts the third surface 211 of the main body 21, and the second surface 33 of the clutch member 30 abuts the side of the driving member 10, thereby forming a limit stop for the off-line member 20. In the initial state, the first surface 32 is arranged horizontally, and the second surface 33 is arranged vertically. Of course, the first surface 32 and the second surface 33 can also be arranged in other directions, which is not limited here.

[0069] For example, the through hole 31 is closer to the second end than the first end. That is, the through hole 31 is not the central rotation hole of the clutch member 30, but is closer to the side of the driving member 10. This makes it easier for the clutch member 30 to rotate after the second end enters the avoidance recess 11, thereby reducing the force required to rotate the clutch member 30 and lowering the requirements for the first elastic member 40.

[0070] For example, there are two clutch members 30, which are symmetrically arranged on both sides of the driving member 10. Correspondingly, there are also two avoidance recesses 11, which are arranged opposite to each other on both sides of the driving member 10, and the two clutch members 30 are correspondingly arranged with the two avoidance recesses 11.

[0071] For example, referring to Figures 4 and 6, the energy storage assembly 210 also includes a stop sleeve 80. The stop sleeve 80 is sleeved on the driver 10 and connected to the mounting base 200 of the stapler 1000, and the other end of the first elastic member 40 is fixed to the distal end of the stop sleeve 80. It is understandable that during the operation of the stapler 1000, the stop sleeve 80 is fixed and does not move as the stop end of the first elastic member 40, and the energy storage assembly 210 provides the elastic force for the off-line member 20 to move toward the distal end. By providing the stop sleeve 80, the stop sleeve 80 has a certain length, thereby making the length of the first elastic member 40 not need to be too long, not prone to deformation and bending, and the hollow sleeve structure can avoid the driver 10, ensuring the normal movement of the driver 10.

[0072] For example, referring to Figures 1 and 2, the stapler 1000 further includes a push-pull button 100, a knob 110, a positioning member 120, and a stopper 220. The distal end of the driver 10 is connected to the suturing mechanism 400, and the proximal end is connected to the push-pull button 100. For example, referring to Figure 3, the suturing mechanism 400 includes a flap 130 and a suturing needle 140. In response to the push-pull button 100 performing a first movement, the driver 10 drives the flap 130 to move from a closed position to an open position; in response to the push-pull button 100 performing a second movement, the driver 10 drives the suturing needle 140 to move. The stopper 220 is movably connected to the positioning member 120. The knob 110 has a first position, a second position, and a third position. In the first position, the knob 110 engages with the push-pull button 100 to prevent the push-pull button 100 from performing the first movement. When the knob 110 is operated to rotate from the first position to the second position, the knob 110 separates from the push-pull button 100, and the push-pull button 100 is operated to perform the first movement. When the flap 130 is in the open position, the push-pull button 100 reengages with the knob 110 to prevent the push-pull button 100 from performing the second movement. The stopper 220 engages with the knob 110 to prevent the knob 110 from rotating to the third position. During the process of the push-pull button 100 driving the driver 10 to move, the driver 10 cooperates with the stopper 220 to cause the stopper 220 to move from the engaged position with the knob 110 to the separated position from the knob 110, so that the knob 110 rotates from the second position to the third position in response to the operation. When the knob 110 is operated to rotate from the second position to the third position, the knob 110 separates from the push-pull button 100 again, and the push-pull button 100 is operated to perform the second movement.

[0073] For example, referring to Figures 1 and 2, the suture device 1000 also includes the above-mentioned mounting base 200 and a core rod assembly 90, wherein the push-pull button 100, the knob 110, and the positioning member 120 are all disposed in the mounting base 200. The mounting base 200 has a notch so that the cantilever of the knob 110 extends out of the mounting base 200 from the notch, making it convenient for the operator to rotate the knob 110. The positioning member 120 is connected to the mounting base 200 of the suture device 1000, and the knob 110 is rotatably connected to the positioning member 120. The proximal end of the core rod assembly 90 is connected to the mounting base 200, and the driving member 10 is disposed in the core rod assembly 90. The distal end of the core rod assembly 90 has a needle retention port 91 and a needle exit port 92, and the wing 130 and the suture needle 140 are rotatably disposed in the needle exit port 92, and are respectively drivably connected to the driving member 10. When the driving member 10 moves toward the distal end, it first drives the wing 130 to move from the closed position to the open position, thereby supporting the abdominal wall tissue of the human body, and then drives the suture needle 140 to perform the needle removal action.

[0074] The stapler 1000 has three gears, corresponding to the first position, the second position and the third position of the knob 110. When the knob 110 is in the first position, the stapler 1000 is in the first gear position, at which time the stapler 1000 is locked and the push-pull button 100 cannot be pushed; when the knob 110 is rotated from the first position to the second position, the stapler 1000 is adjusted from the first gear position to the second gear position, at which time the push-pull button 100 can push the driver 10 toward the distal end for a stroke, thereby executing the opening action of the wing 130; when the knob 110 is rotated to the third position, the stapler 1000 is adjusted from the second gear position to the second gear position. When adjusted to the 3rd gear position, the push-pull button 100 can push the driver 10 to the distal end again to move a stroke, thereby executing the needle-out action of the suture needle 140. At the same time, during the movement of the driver 10 to the distal end, the driver 10 releases the limit stop of the clutch 30 and the off-line member 20 through the switching structure, and the clutch 30 switches from the initial state to the avoidance state, so that the off-line member 20 moves to the distal end to the preset position under the force of the energy storage component 210, thereby jamming the suture needle 140 that is being pulled out. It can be understood that the first movement and the second movement of the push-pull button 100 are respectively two strokes of pushing the preset distance to the distal end.

[0075] As can be seen from the above, the push-pull button 100 drives the wing 130 and the suturing needle 140 to move via the driver 10. For example, referring to Figures 3, 5, and 7 to 9, the driver 10 includes a first driving portion 15 and a second driving portion 16. The first driving portion 15 and the second driving portion 16 are radially spaced apart. The first driving portion 15 is drivingly connected to the wing 130 for driving the movement of the wing 130, and the second driving portion 16 is drivingly connected to the suturing needle 140 for driving the movement of the suturing needle 140. For example, the first driving portion 15 and the second driving portion 16 are located at the distal end of the driver 10. When the push-pull button 100 is pushed to perform a first movement along the axial direction of the core rod assembly 90 to drive the driver 10 to move, the first driving portion 15 cooperates with the wing 130 to drive the wing 130 from the closed position to the open position. When the wing 130 is in the open position, the push-pull button 100 is further pushed to perform a second movement along the axial direction of the core rod assembly 90 to drive the driver 10 to move, and the second driving portion 16 cooperates with the suture needle 140 to drive the suture needle 140 to perform the needle removal and needle return actions. The first driving portion 15 is provided with a first tooth portion 13, and the second driving portion 16 is provided with a second tooth portion 14. The wing 130 includes a first gear 131, which meshes with the first gear 131 to drive the wing 130 to move. Specifically, there are two wings 130, which are arranged opposite each other. Accordingly, there are two first driving portions 15, and the second driving portion 16 is located between the two first driving portions 15. The two first tooth portions 13 respectively drive the first gears 131 of the two wings 130, thereby driving the wings 130 to move. The suturing needle 140 includes a transmission rod 141 and a suturing arm 142. One end of the transmission rod 141 is drivingly connected to the second driving unit 16, and the other end of the transmission rod 141 is connected to the suturing arm 142 at an angle. The end of the suturing arm 142 away from the transmission rod 141 is connected to the suturing needle head 1421. For example, the suturing arm 142 is arc-shaped. For example, one end of the transmission rod 141 has a second gear 143, and the second tooth portion 14 is configured to engage with the second gear 143 to drive the second gear 143 to rotate, thereby driving the suturing arm 142 to rotate along an arc-shaped trajectory. For example, there are two suturing needles 140, and the two suturing needles 140 are arranged opposite each other. Accordingly, the second tooth portion 14 is provided on both sides of the second driving unit 16. The two second tooth portions 14 respectively drive the second gears 143 of the two suturing needles 140, thereby driving the suturing needles 140 to move. The suture needle 140 drives the suture thread 160 to release. Subsequently, the suture needle 140 can drive the suture thread 160 through the human abdominal wall tissue to sew up the puncture hole. The more detailed structure and installation of the drive member 10, the wing 130 and the suture needle 140 are conventional designs and are not described in detail here.

[0076] For example, referring to Figures 12 and 13 , the thread-removing member 20 includes a main body 21 and a stopper 22. The clutch member 30 and the main body 21 are engaged and stopped. The stopper 22 is disposed on the main body 21, for example, on the side of the main body 21, and has an opening 221 for separating the suture thread 160 from the suture needle 140. For example, the stopper 22 extends axially along the core rod assembly 90, and accordingly, the opening 221 is a strip-shaped opening axially along the core rod assembly 90. Corresponding to the two suture needles 140, there are also two stoppers 22, which are disposed on opposite sides of the main body 21.

[0077] For example, referring to Figure 34 , the connection between the suture needle 1421 and the suture arm 142 has an abutment step 144. After the suture needle 1421 is inserted into the axial hole, the needle guard 150 abuts against the abutment step 144. To accommodate the baffle 22, the end of the suture arm 142 near the suture needle 1421 has a reduced diameter section 1422. The connection between the reduced diameter section 1422 and the suture needle 1421 has the aforementioned abutment step 144, and the opening 221 is designed to accommodate the reduced diameter section 1422. For example, the reduced diameter section 1422 is formed by cutting at the end of the suture arm 142 near the suture needle 1421. The cut surface is parallel to the extension direction of the opening 221, and there may be one cut surface or two opposing cut surfaces. The thickness of the reduced diameter section 1422 in the width direction of the opening 221 is adapted to the width of the opening 221, thereby enabling the reduced diameter section 1422 to enter the opening 221. When the suture needle 140 drives the suture thread 160 and the needle sleeve 150 into the needle retention port 91, and at the same time pushes the push-pull button 100, thereby driving the driving member 10 to move distally, the driving member 10 releases the limit stops of the clutch member 30 and the thread-off member 20 through the switching structure, so that the thread-off member 20 moves distally under the force of the energy storage assembly 210, thereby driving the baffle 22 to move distally, at this time, the diameter reduction section 1422 of the suture arm 142 enters the opening 221 of the baffle 22. When the suture needle 140 exits the needle retention port 91, the baffle 22 at the opening 221 forms a limit stop for the needle sleeve 150, so that the needle sleeve 150 is separated from the suture needle 1421, thereby leaving the suture thread 160 in the core rod assembly 90.

[0078] It should be noted that, in this embodiment, the suture needle 140 performs the needle withdrawal action and the baffle 22 moves toward the distal end, that is, the obstruction to the thread-stripping member 20 is released while the needle is withdrawn. Of course, it can be understood that the baffle 22 can also move toward the distal end after the needle withdrawal action of the suture needle 140 is completed, as long as the needle withdrawal action of the suture needle 140 is completed before the action of the thread-stripping member 20 is completed or the two are completed at the same time.

[0079] For example, referring to FIG3 , the suturing mechanism 400 further includes a needle guard 150, which is detachably connected to the suture needle 140. The needle guard 150 has an axial hole and a radial hole connected to the axial hole. The suture thread 160 passes through the radial hole and the suture needle 140 extends into the axial hole to press the suture thread 160. The suture needle 140 moves forward to drive the needle guard 150 and the suture thread 160 to first pass through the abdominal wall tissue of the human body and then enter the needle retention port 91. The thread stripping member 20 simultaneously moves distally to allow the reduced diameter section 1422 of the suture arm 142 to enter the opening 221 of the baffle 22. When the suture needle 140 moves backward to exit the needle retention port 91, the needle guard 150 and the baffle 22 of the thread stripping member 20 form a limit stop, so that the needle guard 150 and the suture thread 160 are separated from the suture needle 140, and the needle guard 150 and the suture thread 160 remain in the core rod assembly 90.

[0080] For example, the end of the suture 160 has a limiting protrusion, which forms a limiting stop with the needle sleeve 150 to prevent the suture 160 from being separated from the needle sleeve 150. For example, the limiting protrusion can be formed by tying the suture 160 or by melting the suture 160.

[0081] For example, referring to Figure 4, the suturing device 1000 further includes a second pin 180, which is also provided on the base 50. The second pin 180 sequentially passes through the first gear 131, the second gear 143 and the matching portion of the wing 130, so that the wing 130 and the suture needle 140 rotate coaxially, as shown in Figure 3.

[0082] For example, referring to FIG. 4 , the suture device 1000 further includes a receiving member 170 for receiving a suture thread 160. The ends of the suture thread 160 extend from the receiving member 170 and are respectively connected to the suture needles 1421 of the two suture needles 140. The ends of the base 50 are respectively connected to the core rod assembly 90 and the receiving member 170. For example, the suture device 1000 further includes a third pin 190, which is disposed on the base 50. The receiving member 170 has a through hole, through which the third pin 190 passes, thereby connecting the receiving member 170 to the distal end of the base 50.

[0083] 14 to 18 illustrate the operation process of the stapler 1000 .

[0084] At the beginning, the clutch 30 is in the initial state, at which time the first surface 32 of the clutch 30 abuts against the third surface 211 of the main body 21, thereby limiting the position of the de-threading member 20, as shown in Figure 14. In response to the push-pull button 100 being pushed a certain distance to the distal end, the driving member 10 drives the wing 130 to move from the closed position to the open position, thereby supporting the abdominal wall tissue of the human body; continuing to respond to the push-pull button 100 being pushed a certain distance to the distal end, the driving member 10 drives the suture needle 140 to move and perform the needle removal action, so that the suture needle 140 drives the suture thread 160 and the needle sleeve 150 to enter the needle retention port 91, and at the same time the avoidance recess 11 moves to the clutch 30, so that the second end of the clutch 30 enters the avoidance recess 11, as shown in Figure 15. Under the elastic force of the first elastic member 40, the thread-off member 20 is pushed to move distally, thereby driving the clutch member 30 to rotate, thereby avoiding the thread-off member 20. The thread-off member 20 continues to move distally through the clutch member 30 to approach the suture needle 140, as shown in Figure 16. Under the elastic force of the first elastic member 40, the opening 221 of the thread-off member 20 clamps the reduced diameter section 1422 of the suture needle 140, as shown in Figure 17. Pulling the push-pull button 100 causes the drive member 10 to move proximally, and the suture needle 140 exits the needle retention port 91. At this time, the baffle 22 at the opening 221 forms a limit stop on the needle guard 150, so that the needle guard 150 is separated from the suture needle 1421, thereby retaining the suture thread 160 in the core rod assembly 90, as shown in Figure 18.

[0085] 19 to 33 , another embodiment of the present disclosure is shown. Similar to the embodiment shown in FIG. 1 to 20 , this embodiment relates to a stapler.

[0086] Referring to Figures 19, 21, and 25 to 26, the stapler 1000 includes a base 50 and a first pin 60. The clutch 30 is provided with a through hole 31. The first pin 60 passes through the through hole 31 and is connected to the base 50 at both ends so that the clutch 30 can move along the first pin 60, for example, move, thereby switching from an initial state to an avoidance state.

[0087] For example, referring to Figures 20, 22 to 24, the switching structure includes a protrusion 12, which protrudes from the side of the driving member 10. In the initial state, the proximal end of the clutch member 30 abuts the off-line member 20. In response to the distal movement of the driving member 10, the protrusion 12 squeezes the clutch member 30, causing the clutch member 30 to move along the first pin 60 to avoid the off-line member 20, thereby releasing the restrictive stop on the off-line member 20. It is understood that the first pin 60 is perpendicular to the axial direction of the stapler 1000, that is, it is arranged along the radial direction of the stapler 1000. When squeezed by the protrusion 12, the clutch member 30 moves radially to offset the off-line member 20, thereby no longer affecting the axial distal movement of the off-line member 20.

[0088] For example, referring to Figures 22-23 and 25-26, to facilitate and reduce the effort required to squeeze the clutch member 30, the raised portion 12 has an inclined squeezing surface 121. Accordingly, the proximal end of the clutch member 30 has a pressure-bearing inclined surface 34 that mates with the squeezing surface 121. When the raised portion 12 moves to the clutch member 30, the squeezing inclined surface 121 abuts the pressure-bearing inclined surface 34, and the raised portion 12 moves distally. The inclined surfaces cooperate to squeeze the clutch member 30 radially, thereby avoiding the derailing member 20.

[0089] For example, in order to ensure that the clutch member 30 no longer blocks the de-threading member 20 in the axial direction after being squeezed open, as shown in Figures 25 to 26 and 28, the de-threading member 20 has a notch 212. The protrusion 12 drives the clutch member 30 so that the clutch member 30 moves a preset distance along the first pin 60, and then the clutch member 30 moves to the notch 212, so that the clutch member 30 avoids the de-threading member 20. For example, the notch 212 is formed in the main body 21, and the opening of the notch 212 is sequentially connected to the third surface 211. The protrusion 12 drives the clutch member 30 from the top surface of the clutch member 30 abutting against the third surface 211 of the main body 21 to the notch 212, thereby avoiding the de-threading member 20.

[0090] For example, to reduce the travel distance of the clutch 30, as shown in Figures 25 and 26, the clutch 30 includes a relief notch 35 that cooperates with the notch portion 212. The relief notch 35 is formed by thinning the end of the clutch 30 that abuts the main body 21 along the axial direction of the first pin 60. When the clutch 30 is driven by the protrusion 12 to move radially, the relief notch 35 also moves radially with the clutch 30. When the relief notch 35 moves to the third surface 211 that is offset from the de-threading element 20, the de-threading element 20 can be avoided. This arrangement can reduce the travel distance of the clutch 30, wherein the width of the relief notch 35 along the axial direction of the first pin 60 is the reduced travel distance of the clutch 30, thereby facilitating a more rational arrangement of the internal structure of the stapler 1000 and making the overall structure more compact.

[0091] For example, referring to Figures 19 and 21 , the stapler 1000 further includes a second elastic member 70, which is sleeved onto the first pin 60. One end of the second elastic member 70 abuts against the clutch member 30, and the other end is fixed to the base 50, providing a force to maintain the clutch member 30 in its initial state. For example, the second elastic member 70 is fixed to one base 50, and in the initial state, the clutch member 30 abuts against the base 50 on the other side due to the elastic force of the second elastic member 70.

[0092] For example, the second elastic member 70 is a spring. It is understood that the radial force applied by the first elastic member 40 to the pressure-bearing inclined surface 34 of the clutch member 30 is greater than the elastic force of the second elastic member 70 , so that the protrusion 12 can squeeze the clutch member 30 apart.

[0093] For example, the main body 21 includes an annular portion 214 and two cantilevers, and the two cantilevers are respectively located on opposite sides of the annular portion 214. The proximal end of the cantilever is connected to the annular portion 214, and the distal end extends axially and has a third surface 211 and a notch portion 212 at the end, and the two baffles 22 are respectively connected to the two cantilevers. The off-line member 20 is a centrally symmetrical structure, that is, the two baffles 22, the two cantilevers, and the third surface 211 and the notch portion 212 of the cantilever are all centrally symmetrically arranged. Correspondingly, for example, there are two clutch members 30, and the two clutch members 30 are centrally symmetrically arranged on both sides of the driving member 10, thereby cooperating with the two third surfaces 211 and the notch portion 212 of the off-line member 20. That is to say, the orientations of the two clutch members 30 are opposite, and the moving directions are also opposite. Correspondingly, there are also two protrusions 12, and the two protrusions 12 are arranged back to back on both sides of the driving member 10, and the two clutch members 30 are arranged corresponding to the two avoidance recesses 11,

[0094] 29 to 33 illustrate the operation process of the stapler 1000.

[0095] At the beginning, the clutch 30 is in the initial state, at which time the first surface 32 of the clutch 30 abuts against the third surface 211 of the main body 21, thereby limiting the position of the off-line member 20, as shown in Figure 29. In response to the push-pull button 100 being pushed a certain distance to the distal end, the driving member 10 drives the wing 130 to move from the closed position to the open position, thereby supporting the abdominal wall tissue of the human body; continuing to respond to the push-pull button 100 being pushed a certain distance to the distal end, the driving member 10 drives the suture needle 140 to move and perform the needle-out action, so that the suture needle 140 drives the suture thread 160 and the needle sleeve 150 to enter the needle retention port 91, and at the same time, the protrusion 12 moves to the clutch 30, so that the extrusion slope 121 of the protrusion 12 abuts against the pressure slope 34 of the clutch 30, as shown in Figure 30. The driving member 10 moves distally, thereby driving the clutch member 30 to move radially through the protrusion 12, causing the clutch member 30 to move to the notch 212 of the thread-off member 20, thereby avoiding the thread-off member 20. The thread-off member 20 continues to move distally through the clutch member 30 to approach the suture needle 140, as shown in Figure 31. When the first elastic member 40 returns to its original state, the opening 221 of the thread-off member 20 clamps the reduced diameter section 1422 of the suture needle 140, as shown in Figure 32. Pulling the push-pull button 100 causes the driving member 10 to move proximally, and the suture needle 140 exits the needle retention port 91. At this time, the baffle 22 at the opening 221 forms a limit stop for the needle guard 150, so that the needle guard 150 is separated from the suture needle head 1421, thereby retaining the suture thread 160 in the core rod assembly 90, as shown in Figure 33.

[0096] In summary, the suturing device 1000 is provided with a clutch 30 and a switching structure is provided on the driving member 10, so that the clutch 30 can switch between the initial state and the avoidance state, thereby making the thread-off member 20 be limited by the clutch before the suturing mechanism 400 completes the needle-out action, and the limit stop between the clutch 30 and the thread-off member 20 is released after the suturing mechanism 400 completes the needle-out action or when the needle-out action is performed, so that the thread-off member 20 can move a preset distance to clamp the suture needle 140 to separate the suture thread 160 from the suture needle 140. 40 is disengaged. For example, the energy storage component 210 provides a force for the off-line component 20, so that the off-line component 20 is in a stressed state before and after being triggered. It is a rigid connection structure, which has high stability, ensuring that the off-line component 20 can be triggered normally to finally complete the entire suturing operation smoothly. In addition, by setting the energy storage component 210, the normal triggering of the suture device 1000 can be achieved without the user applying additional force, avoiding the uncontrollability of human operation, and running reliably and stably, with a good user experience, thereby ensuring the normal use of the suture device 1000.

[0097] It should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation method can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0098] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present disclosure. They are not intended to limit the scope of protection of the present disclosure. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present disclosure should be included in the scope of protection of the present disclosure.

Claims

1. A stapler, comprising: A driving member and a suturing mechanism, wherein the driving member is connected to the suturing mechanism and is configured to drive the suturing mechanism to move to perform a suturing operation. The suturing mechanism includes a suture needle and a suture thread. The stapler further includes an energy storage assembly, a thread releasing member, and a clutch member. The energy storage assembly is connected to the thread releasing member and is configured to provide a force to the thread releasing member; The clutch member has an initial state and an avoidance state. In the initial state, the clutch member is in limit stop with the thread releasing member. The driving member includes a switching structure. In response to the movement of the driving member, the switching structure releases the limit stop between the clutch member and the thread releasing member, so that the clutch member switches from the initial state to the avoidance state. In the avoidance state, the thread releasing member moves to a preset position under the pushing force of the energy storage assembly, thereby clamping the suture needle to separate the suture thread from the suture needle after the suturing mechanism completes the suturing operation.

2. The stapler according to claim 1, wherein, The energy storage assembly includes a first elastic member. One end of the first elastic member abuts against the thread releasing member, and the other end is fixed to the mounting base of the stapler. And in the initial state, the first elastic member is in a compressed state; In the avoidance state, the energy storage assembly is released to drive the movement of the thread releasing member.

3. The stapler according to claim 1 or 2 further comprises: A base, wherein the clutch member is movably connected to the base, and the driving member is configured to drive the clutch member to move through the switching structure so that the clutch member switches from the initial state to the avoidance state.

4. The stapler according to claim 3, further comprising: A first pin shaft, wherein the clutch member is connected to the base through the first pin shaft; the clutch member rotates relative to the first pin shaft or moves along the first pin shaft to switch from the initial state to the avoidance state.

5. The stapler according to claim 3 or 4, wherein, The switching structure includes an avoidance recess, which is opened on the side surface of the driving member; the clutch member includes a first end and a second end. In the initial state, the first end abuts against the thread releasing member, and the second end abuts against the driving member; In response to the driving member moving distally, the second end enters the avoidance recess. Under the pushing force of the energy storage assembly, the clutch member rotates a preset angle to release the limit stop on the thread releasing member.

6. The stapler according to claim 3, wherein, The switching structure includes a protruding portion, which protrudes from the side surface of the driving member. In the initial state, the proximal end of the clutch member abuts against the thread releasing member; In response to the driving member moving distally, the protruding portion drives the clutch member to move to avoid the thread releasing member, thereby releasing the limit stop on the thread releasing member.

7. The stapler according to claim 6, further comprising: A second elastic member, wherein one end of the second elastic member abuts against the clutch member, and the other end is fixed to the base, providing a force for the clutch member to maintain in the initial state.

8. The stapler according to claim 6 or 7, wherein, The protruding portion has a pressing inclined surface, and the proximal end of the clutch member has a bearing inclined surface that cooperates with the pressing inclined surface.

9. The stapler according to any one of claims 6 - 8, wherein, The thread releasing member has a notch portion. After the protruding portion drives the clutch member to move a preset distance, the clutch member moves to the notch portion to enable the clutch member to avoid the thread releasing member.

10. The stapler according to any one of claims 2-9, wherein, The energy storage assembly further comprises a stop sleeve, which is sleeved on the driving member and connected to the mounting seat of the stapler, and the other end of the first elastic member is fixed to the distal end of the stop sleeve.

11. The stapler according to any one of claims 1-10, wherein, The thread-removing member comprises a main body and a blocking piece, the clutch member and the main body are limited and stopped, the blocking piece is arranged on the main body and is provided with an opening for clamping the suture needle.

12. The stapler according to any one of claims 1-11 further comprises: A needle sleeve, wherein the needle sleeve is detachably connected to the suture needle, the needle sleeve having an axial hole and a radial hole connected to the axial hole, the suture thread passes through the radial hole and the suture needle extends into the axial hole to press the suture thread; in the avoidance state, the thread stripping member moves to the preset position to form a limit stop with the needle sleeve, thereby separating the suture thread from the suture needle after the suturing mechanism completes the suturing operation.

13. The stapler according to any one of claims 1-12, wherein, The driving member also includes a first driving part and a second driving part, and the first driving part and the second driving part are arranged at the distal end of the driving member at intervals. The first driving part is connected to the wing driving of the suturing mechanism to drive the wing to move from a closed position to an open position, and the second driving part is connected to the suturing needle driving to drive the suturing needle to perform a needle withdrawal action and a needle return action.

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