CN117442264A

CN117442264A - Suture instrument and suture instrument assembly

Info

Publication number: CN117442264A
Application number: CN202211733390.4A
Authority: CN
Inventors: 孙宝峰; 戚亚龙
Original assignee: Fengh Medical Co ltd
Current assignee: Fengh Medical Co ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2024-01-26
Also published as: WO2024139723A1

Abstract

The invention discloses a stitching instrument, which comprises a first operation piece, a wing piece connected with the first operation piece and a stitching needle; first movement of the first operating member in a first direction moves the tab from the closed position to the open position; a second movement in the first direction moves the suture needle; the safety mechanism comprises a second operating piece and a second part connected with the second operating piece; when the tab is in the open position, the first member and the second member combine to inhibit the first operating member from performing the second movement, thereby inhibiting movement of the suture needle; the second member is separated from the first member in response to a third movement of the second operating member in the second direction; after the second component is separated from the first component, the suture needle is used for executing a needle-out action in response to the second movement of the first operation piece. The suture device can prevent the suture needle from being misoperation after the wing plate is unfolded, meets the operation requirement, and is safe and reliable.

Description

Suture instrument and suture instrument assembly

Technical Field

The present invention relates to the field of surgical instruments, and more particularly to a stapler and stapler assembly.

Background

Currently, laparoscopic surgery has been widely accepted in surgical operations. In minimally invasive laparoscopic medical operations, a doctor usually firstly makes a small incision in the abdomen of a patient, and then moves the puncture outfit downwards while rotating the puncture end of the puncture outfit in a left-right reciprocating manner aiming at the made small incision, so that the puncture core assembly guides the puncture cannula to penetrate through the abdominal cortex of the patient; the puncture core assembly is then withdrawn and the abdominal cavity is inflated with the puncture instrument cannula to complete and maintain the pneumoperitoneum. Whether the pneumoperitoneum puncture outfit sleeve is completed and maintained or the other puncture outfit sleeves, a passage for the instrument to enter and exit the abdominal cavity can be established, and the anastomat or other surgical instruments can enter and exit the abdominal cavity of the patient through the puncture sleeve to perform surgical operation. After the operation is finished, the puncture hole of the patient needs to be sutured, in order to realize accurate suturing, the suturing device should position human tissues at two sides of the puncture hole before suturing, and after the positioning action is executed, the needle outlet action is executed to suture the puncture hole; therefore, the suture instrument needs to have a positioning structure and a needle discharging structure, and meanwhile, needs to ensure the logic of positioning and needle discharging, and particularly needs to ensure that the needle discharging action is prevented from being triggered by mistake after the positioning action is executed. The existing stitching instrument has a complex structure and does not have a corresponding misoperation prevention mechanism. There is therefore a need for improvement.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims at providing a stitching instrument and a stitching instrument assembly, and the invention is realized by the following technical scheme:

a stapler comprising a first operating member and a tab and a needle connected to the first operating member; a first movement of the first operating member in a first direction moves the tab from a closed position to an open position; a second movement of the first operating member in a first direction moves the suturing needle; the stapler further comprises a safety mechanism and a first part, wherein the first part is connected with the first operation piece, and the safety mechanism comprises a second operation piece and a second part connected with the second operation piece; when the tab is in the open position, the first member and the second member combine to prevent the first operator from performing the second movement, thereby preventing the needle from moving; in response to a third movement of the second operating member in a second direction, the second member is separated from the first member; after the second component is separated from the first component, the suture needle moves to perform a needle-out action in response to the first operation piece performing the second movement.

Further, in an initial state, the tab is in the closed position, and the second member is coupled to the first member to inhibit the first movement of the first operating member; the movement of the second operating member in the second direction further includes a fourth movement, the fourth movement being performed in response to the second operating member, the second component being separated from the first component to enable the first operating member to perform the first movement.

Further, one of the first component and the second component comprises a first mating surface, and the other of the first component and the second component comprises a first limiting surface and a second limiting surface; the first matching surface is combined with the first limiting surface to prevent the first operation piece from executing the first movement in the initial state, and the first matching surface and the first limiting surface are switched from a first combined state to a first separated state in response to the fourth movement of the second operation piece; operating the first operating member to perform the first movement when in the first disengaged state; the first engagement surface engaging the second stop surface to prevent the second movement of the first operating member when the tab is in the open position; in response to the third movement of the second operating member, the first mating surface and the second limiting surface switch from a second engaged state to a second disengaged state; in the second separated state, the first operating member is operated to perform the second movement.

Further, the first component is a first protrusion extending downwards along the axial direction, the lower surface of the first protrusion is the first matching surface, the second component is a second protrusion extending upwards along the axial direction and in a stepped shape, the upper surface of the second protrusion located at the proximal side is the first limiting surface, and the upper surface located at the distal side is the second limiting surface.

Further, the first part is a first bulge which extends downwards along the axial direction and is in a ladder shape, the lower surface of the first bulge, which is positioned at the far side, is the first limit surface, and the lower surface, which is positioned at the near side, is the second limit surface; the second part is a second bulge extending upwards along the axial direction, and the upper surface of the second bulge is the first matching surface.

Further, in an initial state, the tab is in the closed position, the first member is spaced apart from the second member, the tab moves from the closed position to the open position in response to the first operation member performing the first movement; the first component moves from a position spaced from the second component to a position engaged with the second component.

Further, the first part is a first protrusion extending downwards along the axial direction, and the second part is a second protrusion extending upwards along the axial direction; the lower surface of the first protrusion is coupled with the upper surface of the second protrusion such that the first member is coupled with the second member.

Further, the first direction is an axial direction, and the second direction is a circumferential direction.

Further, the first motion and the second motion are both linear motions, and the motion along the second direction is a rotational motion.

Further, the first member and the second member are abutted in the first direction so that the first member and the second member are combined.

Further, the stapler further comprises a driving mechanism, and the first operation piece drives the wing and the suture needle to move through the driving mechanism; the driving mechanism comprises a first driving part and a second driving part, the first driving part and the second driving part are arranged at intervals along the axial direction, the first driving part is used for driving the wing pieces to move, and the second driving part is used for driving the suture needles to move.

Further, the first driving part comprises a first tooth part and a second tooth part, and the second driving part comprises a third tooth part and a fourth tooth part; the stitching instrument comprises two fins and two stitching needles, each fin comprises a fin gear, each stitching needle comprises a stitching needle gear, the first tooth part and the second tooth part are used for driving one fin gear to drive two fins to move respectively, and the third tooth part and the fourth tooth part are used for driving one stitching needle gear to drive two stitching needles to execute the needle outlet action respectively.

Further, the first tooth portion and the second tooth portion are laterally spaced apart, and the third tooth portion and the fourth tooth portion are laterally located between the first tooth portion and the second tooth portion.

Further, the suture needle and the wing are coaxially arranged in the transverse direction.

A stapler comprising a first operating member and a tab and a needle connected to the first operating member; a first movement of the first operating member in a first direction moves the tab from a closed position to an open position; a second movement of the first operating member in a first direction moves the suturing needle; the stapler further includes a safety mechanism, the stapler having a first state, a second state, and a third state; in the first state, the first operating member is coupled to the safety mechanism to prevent the first operating member from performing the first movement; in the second state, the first operating member is separated from the safety mechanism; the tab moves from the closed position to the open position in response to a first movement of the first operating member; in the open position, the first operating member is coupled to the safety mechanism to prevent the first operating member from performing the second movement; in the third state, the first operating member is separated from the safety mechanism, and the suture needle moves to execute a needle-out action in response to the second movement of the first operating member; responsive to a fourth movement of the safety mechanism in a second direction, the stapler switches from the first state to the second state; responsive to a third movement of the safety mechanism in a second direction, the stapler switches the third state from the second state; the first direction is axial, and the second direction is circumferential.

A stapler comprising a first operating member and a tab and a needle connected to the first operating member; a first movement of the first operating member in a first direction moves the tab from a closed position to an open position; a second movement of the first operating member in a first direction moves the suturing needle; the stapler further includes a safety mechanism, the stapler having a first state and a second state; in the first state, the first operating member is disengaged from the safety mechanism, and the tab moves from the closed position to the open position in response to a first movement of the first operating member; in the open position, the first operating member is coupled to the safety mechanism to prevent the first operating member from performing the second movement; in the second state, the first operating member is separated from the safety mechanism, and the suture needle moves to execute a needle-out action in response to the second movement of the first operating member; responsive to a third movement of the safety mechanism in a second direction, the stapler is switched from the first state to the second state; the first direction is axial, and the second direction is circumferential.

The invention also provides a stitching instrument assembly, which comprises a sleeve assembly and the stitching instrument, wherein the stitching instrument is sleeved on the sleeve assembly in a removable mode.

Compared with the prior art, the invention has the beneficial effects that: in one aspect, a first movement of a first operating member of the stapler in a first direction moves the tab from the closed position to the open position; the second movement of the first operating member along the first direction enables the suture needle to move, the wing piece and the suture needle are sequentially driven to move through the movement of the same operating member along the same direction, logic between positioning action and needle discharging action can be met, the overall structure of the suture instrument is simple, and the operation is smooth; in another aspect, the stapler further includes a safety mechanism, the first operating member being coupled to the safety mechanism to prevent the first operating member from performing the second movement when the tab is in the open position, thereby preventing movement of the suturing needle; after the second operating member is operated, the first operating member is separated from the safety mechanism; after the two are separated, the suture needle performs a needle-out action in response to the first operation member performing the second movement. The suture needle can be prevented from being misoperation after the wing is unfolded through the cooperation of the safety mechanism and the first operation piece, so that the operation requirement is met, and the safety mechanism is safe and reliable.

Drawings

FIG. 1 is a schematic view of a suture instrument according to a first embodiment of the present invention;

FIG. 2a is an exploded perspective view of a stapler of a first embodiment of the present invention;

FIG. 2b is a schematic view of a portion of a first operating member according to a first embodiment of the present invention;

FIG. 2c is a schematic view of a safety mechanism according to a first embodiment of the present invention;

FIG. 2d is an exploded perspective view of the safety mechanism, housing, and positioning block of the first embodiment of the present invention;

fig. 2e is a schematic structural diagram of the positioning block and the base body in the first embodiment of the present invention;

FIG. 2f is a cross-sectional view of the safety mechanism, housing, and positioning block of the first embodiment of the present invention;

FIGS. 3 to 7 are schematic views showing a state change of a first operating member and a safety mechanism of the stapler according to the first embodiment of the present invention;

FIG. 8 is a schematic view of a portion of the drive mechanism of the stapler of the first embodiment of the invention;

FIG. 9 is an exploded perspective view of a portion of the drive mechanism of the stapler of the first embodiment of the invention;

FIG. 10 is a schematic view of the first embodiment of the invention in a closed position with the actuator engaged with the actuator from a view angle;

FIG. 11 is a schematic view of the first embodiment of the present invention in a closed position with the actuator engaged with the actuator at another view;

FIG. 12 is a schematic view of a view of the driving member and the actuator when the driving member drives the wing panel to move according to the first embodiment of the present invention;

FIG. 13 is a schematic view of the first embodiment of the present invention from another perspective when the driving member is driving the wing panel to move, the driving member and the actuator cooperating with each other;

FIG. 14 is a schematic view of the first embodiment of the invention in an open position with the actuator engaged with the actuator from a view;

FIG. 15 is a schematic view of the first embodiment of the invention in an open position with the actuator engaged with the actuator at another view;

FIG. 16 is a schematic view showing the structure of the driving member and the actuator in a view angle when the driving member drives the needle according to the first embodiment of the present invention;

FIG. 17 is a schematic view of the first embodiment of the present invention from another perspective in which the driving member cooperates with the actuator when the driving member drives the needle;

FIG. 18 is a schematic view showing the structure of the driving member and the actuator in a view angle when the suturing needle of the first embodiment of the present invention completes the needle withdrawing operation;

FIG. 19 is a schematic view showing the structure of the driving member and the actuator at another view angle when the suturing needle of the first embodiment of the present invention completes the needle withdrawing operation;

FIG. 19a is a schematic view of a needle hub, suture and needle connection according to one embodiment of the present invention;

FIG. 19b is a schematic view of a needle hub, suture and needle according to one embodiment of the present invention;

FIG. 20 is an exploded perspective view of a portion of the structure of the suture instrument and suture receiving device of the first embodiment of the present invention;

FIG. 21a is a schematic view of a suture receiving device according to a first embodiment of the present invention from a perspective;

FIG. 21b is a schematic view of a suture receiving device from another perspective in accordance with the first embodiment of the present invention;

FIG. 22 is a top view of a suture receiving device of a first embodiment of the present invention;

FIG. 23 is a state diagram of the suture receiving device with the tab of the first embodiment of the invention in the closed position;

FIG. 24 is a state diagram of the suture receiving device with the tab of the first embodiment of the invention in an open position;

FIG. 25 is a state diagram of the suture thread receiving device when the suture needle of the first embodiment of the present invention performs the needle withdrawing operation;

FIG. 26 is a state diagram of the suture receiving device when the tab of the first embodiment of the present invention has completed the needle-out action;

FIG. 27 is a schematic view of the construction of a stapler assembly according to a first embodiment of the invention;

FIGS. 28 to 32 are schematic views showing a state change of a first operating member and a safety mechanism of the stapler according to the second embodiment of the present invention;

FIGS. 33 to 36 are schematic views showing a state change of a first operating member and a safety mechanism of a stapler according to a third embodiment of the present invention;

FIG. 37 is a schematic view of the structure of a stapler and cannula assembly of a stapler assembly according to a fourth embodiment of the invention;

FIG. 38 is a schematic view of a portion of the construction of a sleeve assembly according to a fourth embodiment of the present invention;

fig. 38a is a schematic structural view of a seat body according to a fourth embodiment of the present invention;

FIG. 39 is an exploded perspective view of a portion of the construction of a stapler according to a fourth embodiment of the present invention;

FIG. 40 is a cross-sectional view of a portion of the structure of a stapler assembly of a fourth embodiment of the present invention when the stapler is coupled to a cannula assembly;

FIG. 41 is a cross-sectional view of a portion of the structure of a stapler assembly of a fourth embodiment of the invention, shown separated from the cannula assembly;

FIG. 42 is a schematic view of a portion of a snap-fit mechanism and a safety mechanism according to a fourth embodiment of the present invention when the safety mechanism is in a first position;

FIG. 43 is a schematic view of a portion of a snap-fit mechanism and a safety mechanism according to another view angle of the fourth embodiment of the present invention when the safety mechanism is in the first position;

FIG. 44 is a schematic view of a portion of a snap-fit mechanism and a safety mechanism according to a fourth embodiment of the present invention when the safety mechanism is in a second position;

FIG. 45 is a schematic view of a portion of a snap-fit mechanism and a safety mechanism according to another view angle of the fourth embodiment of the present invention when the safety mechanism is in the second position;

FIG. 46 is a schematic view of a portion of a snap-fit mechanism and a safety mechanism according to a fourth embodiment of the present invention when the safety mechanism is in a third position;

FIG. 47 is a schematic view of a portion of a snap-fit mechanism and a safety mechanism according to another view angle of the fourth embodiment of the present invention when the safety mechanism is in a third position;

FIG. 48 is a schematic view of a portion of the engaging mechanism and the safety mechanism according to the fifth embodiment of the present invention when the safety mechanism is at the initial position;

FIG. 49 is a schematic view of a portion of the engaging mechanism and the safety mechanism in another view when the safety mechanism is at the initial position according to the fifth embodiment of the present invention;

FIG. 50 is a schematic view of a portion of a snap-fit mechanism and a safety mechanism according to a fifth embodiment of the present invention when the safety mechanism is in a first position;

FIG. 51 is a schematic view of a portion of the snap-fit mechanism and the safety mechanism in another view when the safety mechanism is in the first position according to the fifth embodiment of the present invention;

FIG. 52 is a schematic view of a portion of the engaging mechanism and the safety mechanism in a view when the safety mechanism is in the second position according to the fifth embodiment of the present invention;

FIG. 53 is a schematic view of a portion of the engaging mechanism and the safety mechanism in a second position according to a fifth embodiment of the present invention;

FIG. 54 is a schematic view of a portion of a snap-fit mechanism and a safety mechanism according to a sixth embodiment of the present invention when the safety mechanism is in a first position;

FIG. 55 is a schematic view of a portion of a snap-fit mechanism and a safety mechanism according to another view angle of the safety mechanism in a first position according to a sixth embodiment of the present invention;

FIG. 56 is a schematic view of a portion of a snap-fit mechanism and a safety mechanism according to a sixth embodiment of the present invention when the safety mechanism is in a second position;

FIG. 57 is a schematic view of a portion of a snap-fit mechanism and a safety mechanism according to another view angle of the sixth embodiment of the present invention when the safety mechanism is in the second position;

description of the embodiments

The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It is to be understood that the terms "proximal" and "distal" are used herein with respect to a clinician manipulating a handle of a stapler. The term "proximal" refers to the portion proximal to the clinician, and the term "distal" refers to the portion distal to the clinician. I.e., the handles are proximal and the jaw assembly is distal, e.g., the proximal end of a component represents an end relatively close to the handles and the distal end represents an end relatively close to the jaw assembly. The terms "upper" and "lower" refer to the relative positions of the staple abutment and the cartridge abutment of the jaw assembly, specifically the staple abutment being "upper" and the cartridge abutment being "lower". However, the stapler can be used in many orientations and positions, and thus these terms expressing relative positional relationships are not limiting and absolute.

In the present invention, unless explicitly specified and limited otherwise, the terms "connected," "connected," and the like are to be construed broadly, and may be fixedly connected, detachably connected, movably connected, or integrated, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communication between the two elements or interaction relationship between the two elements such as abutting. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances. It should be noted that, when the terms "connected" and "connected" are used in the meanings defined by the corresponding terms, only the cases where the terms are clearly required are excluded, and other possible cases are not excluded, such as "detachably connected" means detachably connected, not including being integrated, but movable connection and the like are not excluded.

The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.

As shown in fig. 1 to 27, a suturing device 100 according to a first embodiment of the present invention includes a first operating member 10, a stem assembly 20, a suturing needle 30 and a wing 40. The first operating member 10 is for providing a grip. The proximal end of the core assembly 20 is connected to the first operating member 10, and the distal end of the core assembly 20 is adapted to pass through the puncture. Suture assembly 30 is used to suture a puncture, and at least a portion of suture assembly 30 is disposed on core assembly 20. The suture device 100 further comprises a suture 31, the thread end of the suture 31 is connected to the suture needle 30, and the suture needle 30 moves to drive the suture 31 to suture the puncture hole. The tab 40 is used to position the body tissue on either side of the puncture prior to suturing the puncture, and has a closed position in which it can pass through the puncture into the body and an open position in which it positions the body tissue on either side of the puncture. In this embodiment, the tab 40 and the suture needle 30 are connected to the first operation member 10; first movement of the first operating member 10 in a first direction moves the tab 40 from the closed position to the open position; a second movement of the first operating member 10 in a first direction moves the suture needle 30. That is, the tab 40 and the suture needle 30 are sequentially driven to move by the same operation member (first operation member 10) moving in the same direction, so that the overall structure of the suture instrument 100 is simple and the operation is smooth. To prevent the suture needle 30 from being erroneously manipulated after the deployment of the wings 40, the suture instrument 100 further comprises a first part 110 and a safety mechanism 130, wherein the first part 110 is connected to the first operation member 10, and the safety mechanism 130 comprises a second operation member 131, and a second part 140 connected to the second operation member 131; with the tab 40 in the open position, the first member 110 and the second member 140 cooperate to inhibit the first operating member 10 from performing the second movement, thereby inhibiting movement of the suturing needle 32; in response to the third movement of the second operating member 131 in the second direction, the second component 140 is separated from the first component 110; after the second member 140 is separated from the first member 110, the suture needle 32 performs a needle-out action in response to the first operation member 10 performing a second movement, thereby driving the suture thread 31 to suture the puncture hole. In this embodiment, the first direction is axial, and the second direction is circumferential. The axial direction refers to the axial direction of the core rod assembly 20, and the circumferential direction refers to the axial direction around the core rod assembly 20.

By adopting the scheme of the embodiment, on one hand, on the premise of meeting the positioning and stitching functions of the stitching instrument, the stitching instrument 100 has a simple overall structure and is smooth to operate; on the other hand, the suture needle is prevented from being misoperation after the wing is unfolded through the cooperation of the safety mechanism and the first operation piece, so that the operation requirement is met, and the safety mechanism is safe and reliable.

Further to prevent the tab 40 from being mishandled, as shown in fig. 3 and 3a, in the initial state the second part 140 of the safety mechanism 130 is coupled with the first part 110 to prevent the first movement of the first operating member 10. At this time, the first operating element 10 cannot be operated, the wing 40 cannot be opened, and the second operating element 131 is located at the initial position. Movement of the second operating member 131 in the second direction also includes a fourth movement, the second component 140 being decoupled from the first component 110 to enable the first operating member 10 to perform the first movement in response to the second operating member 131 performing the fourth movement. Specifically, the second operating member 131 is operated in the second direction to move from the initial position toward the intermediate position, where the "intermediate position" refers to a position between the initial position and the end position. When it moves to the neutral position, as shown in fig. 4, the second member 140 is separated from the first member 110. At this time, the first operating member 10 is operated such that it performs a first movement in a first direction to drive the flap 40 from the closed position to the open position. With the tab 40 in the open position, the first member 110 and the second member 140 cooperate to inhibit the first operating member 10 from performing the second movement, thereby inhibiting movement of the suturing needle 32; in response to the third movement of the second operating member 131 in the second direction, the second component 140 is separated from the first component 110; specifically, the second operating member 131 is operated in the second direction to move from the intermediate position toward the end position, and when moved to the end position, the second part 140 is separated from the first part 110 such that the suturing needle 32 is capable of performing a needle-out action in response to the first operating member 10 performing the second movement.

As shown in fig. 2c to 2f, the suture device 100 further includes a base 170 and a positioning block 180 mounted on the base 170, the base 170 includes a first arm 173 and a second arm 175, the first arm 173 and the second arm 175 are spaced apart, each extending upward along the bottom of the base 170 and being disposed in a substantially arc shape; the two first arms 173 are symmetrically disposed on the base 170, and the two second arms 175 are symmetrically disposed on the base 170. The positioning block 180 includes side walls 181 on both left and right sides thereof, and the side wall 181 of each side is received between the adjacent first and second arms 173 and 175. The base 170 further includes a third arm 176, which extends upward along the bottom of the base 170, the two third arms 176 are disposed opposite to each other, the body of the safety mechanism 130 includes a peripheral sidewall 133, an outer wall of the peripheral sidewall 133 is engaged with inner walls of the two third arms 176, and when the second operating member 131 is rotated, the outer wall of the peripheral sidewall 133 is driven to rotate along the inner walls of the two third arms 176, and the bottom of the peripheral sidewall 133 of the safety mechanism 130 is attached to the bottom of the base 170. The positioning block 180 further comprises a limiting element 184 and a limiting spring 183, the body of the positioning block 180 is provided with a mounting hole 182, one inward end of the mounting hole 182 is closed to form a closed end, one end of the limiting spring 183 abuts against the closed end, and the other end is connected with the limiting element 184. The inner wall of part of the peripheral side wall 133 of the safety mechanism 130 is provided with three limit grooves 132 matched with the limit elements 184, and the three limit grooves 132 are adjacently arranged. When the safety mechanism 130 is located at the initial position, as shown in fig. 2f, the limiting element 184 abuts against one of the limiting grooves 132 of the safety mechanism 130 under the action of the limiting spring 183, so as to limit the second operating element 131 at the initial position, when the second operating element 131 is rotated from the initial position to the intermediate position, the limiting element 184 moves towards the mounting hole 182 under the action of the groove wall of the limiting groove 132, the limiting spring 183 is compressed, and when the second operating element 131 moves to the intermediate position, the limiting element 184 enters into the other limiting groove 132 adjacent to the previous limiting groove 132 again under the action of the limiting spring 183, so as to limit the second operating element 131 at the intermediate position; similarly, when the second operating member 131 is rotated from the intermediate position to the end position, the stopper 184 is again inserted into the further stopper groove 132 adjacent to the other stopper groove 132 by the stopper spring 183 to stop the second operating member 131 at the end position.

The first movement and the second movement are both linear movements, and the movement along the second direction (the third movement and the fourth movement) is a rotational movement.

In the present embodiment, as shown in fig. 2a to 7, the first component 110 includes a first mating surface 111, and the second component 140 includes a first limiting surface 141 and a second limiting surface 142; in the initial state, the first mating surface 111 engages with the first stop surface 141 to prevent the first operating member 10 from performing the first movement, as shown in fig. 3 and 3 a; in response to the fourth movement of the second operating member 131, the first engaging surface 111 and the first limiting surface 141 switch from the first engaged state to the first disengaged state, as shown in fig. 4; in the first disengaged state, the first operating member 10 is operated to perform a first movement to move the tab 40; when the tab 40 is in the open position, the first engagement surface 111 engages the second stop surface 142 to prevent the second movement of the first operating member 10 and the needle 30 cannot perform the needle-out movement, as shown in fig. 5; in response to the third movement of the second operating member 131, the first engaging surface 111 and the second limiting surface 142 switch from the second engaging state to the second separating state, as shown in fig. 6; in the second separated state, as shown in fig. 7, the first operating member 10 is operated to perform the second movement, thereby driving the suture needle 30 to perform the needle withdrawing movement.

More specifically, the first part 110 is a first protrusion extending downward along the axial direction, and the lower surface of the first protrusion is a first mating surface 111, so that, in order to make the overall structure of the first operating element 10 compact, the first operating element 10 includes a body with a hollow interior, and the first protrusion is protruding on the inner wall of the body of the first operating element 10; the second part 140 is a second protrusion extending upwards along the axial direction and having a stepped shape, the upper surface of the second protrusion located at the proximal side is a first limiting surface 141, and the upper surface located at the distal side is a second limiting surface 142. In order to make the cooperation between the first operating member 10 and the safety mechanism 130 more stable, the first operating member 10 includes two first protrusions symmetrically disposed on the body of the first operating member 10, and correspondingly, the safety mechanism 130 also includes two second protrusions symmetrically disposed on the body of the safety mechanism 130.

In this embodiment, as shown in FIGS. 8 and 9, the stapler 100 further includes a drive mechanism 150, and the first operating member 10 is coupled to the drive mechanism 150 to drive the movement of the tab 40 and the needle 30 via the drive mechanism 150. The driving mechanism 150 includes a body 151, and a first driving piece 152 and a second driving piece 153 extending downward in an axial direction from the body 151, wherein the first driving piece 152 includes a first driving portion, the second driving piece 153 includes a second driving portion, and the first driving portion and the second driving portion are disposed at intervals in the axial direction, specifically, the second driving portion is closer to the body 151 of the driving mechanism than the first driving portion; the first driving part is disposed at the distal end of the first driving part 152, the second driving part is disposed at the proximal end of the second driving part 153, the first driving part is used for driving the wing 40 to move, and the second driving part is used for driving the suture needle 30 to move. When the first operation member 10 is operated to perform a first movement in the axial direction (first direction) of the stem assembly 20 to drive the driving mechanism 150 to move, the first driving portion cooperates with the tab 40 to drive the tab 40 to move from the closed position to the open position; when the tab 40 is in the open position, the first operation member 10 is continuously operated to perform the second movement along the axial direction (first direction) of the stem assembly 20 to drive the driving mechanism 150 to move, and the second driving portion cooperates with the suture needle 30 to drive the suture needle 30 to perform the needle-out movement. The same operating member (the first operating member 10) drives the same driving mechanism 150 along the same direction to realize the movement of the wing piece 40 and the movement of the suture needle 30, so that the whole structure is simple and compact, the reliability is high, and the operation of a user is convenient.

In the present embodiment, as shown in fig. 9 and 11, the first driving portion includes a first tooth portion 154 and a second tooth portion 156, and the second driving portion includes a third tooth portion 155 and a fourth tooth portion 157. The wing 40 includes a wing body 41 and a wing gear 42 coupled to the wing body 41, and the first tooth 154 and the second tooth 156 are engaged with the wing gear 42 to drive the wing 40 to move. Specifically, two fins 40 are disposed opposite to each other, the first tooth 154 drives the fin gear 42 of one fin 40 to drive the fin 40 to move, and the second tooth 156 engages the fin gear 42 of the other fin 40 to drive the fin 40 to move. The suture needle 30 includes a transmission rod 32 and a suture arm 33. One end of the transmission rod 32 is in driving connection with the second driving member 153, the other end of the transmission rod 32 is in angular connection with the suture arm 33, and one end of the suture arm 33, which is far away from the transmission rod 32, is a suture needle 34. Specifically, the suture arm 33 is arc-shaped, one end of the transmission rod 32 is provided with a suture needle gear 35, and the third tooth portion 155 and the fourth tooth portion 157 are used for being meshed with the suture needle gear 35 to drive the suture needle gear 35 to rotate, so as to drive the suture arm 33 to rotate along an arc-shaped track. Specifically, two suture needles 30 are disposed opposite to each other, the third tooth portion 155 drives the suture needle gear 35 of one suture needle 30 to drive the suture needle 30 to move, and the fourth tooth portion 157 drives the suture needle gear 35 of the other suture needle 30 to drive the suture needle 30 to move.

The first driving member 152 and the second driving member 153 are disposed at intervals along the lateral direction, and a first accommodating space and a second accommodating space are formed at distal ends of the first driving member 152 and the second driving member 154, wherein the first accommodating space is used for accommodating one of the transmission rods 32, and the second accommodating space is used for accommodating the other transmission rod 32. The third tooth 155 and the fourth tooth 157 are located laterally between the first tooth 154 and the second tooth 156. Taking the installation of the suture needle 30 and the wing 40 on one side of the thickness direction Y of the driving mechanism 150 as an example, specifically, the suture needle 30 and the wing 40 are coaxially arranged along the transverse direction, the transmission rod 32 of the suture needle 30 passes through the first accommodating space from one side of the thickness direction Y and then extends out from the other side of the thickness direction Y, the suture needle gear 35 of the suture needle 30 is accommodated in the installation space of the wing 40, the suture device 100 further comprises a rotation shaft 36, and the rotation shaft 36 sequentially passes through the shaft hole of the wing gear 42, the shaft hole of the suture needle gear 35 and the first installation hole opposite to the shaft hole of the wing gear 42, and then the two ends of the rotation shaft 36 are respectively rotatably connected with the body of the core rod assembly 20. The axial direction is the same as the longitudinal direction Z of the driving mechanism 150, the transverse direction is the width direction X of the driving mechanism 150, and the direction perpendicular to the axial direction and the transverse direction is the thickness direction Y of the driving mechanism 150. This arrangement results in a more compact overall structure and smaller overall size of stapler 100.

Fig. 10, 12, 14, 16 and 18-19 are schematic views showing a state change of a view angle of the driving mechanism 150 of the present embodiment driving the cutting blade 40 and the suture needle 30; fig. 11, 13, 15, 17 and 18 to 19 are schematic views showing a state change of the driving mechanism 150 of the present embodiment from another view angle for driving the cutting blade 40 and the suture needle 30. Taking the suturing needle 30 and the wing 40 located at one side of the thickness direction Y of the driving mechanism 150 as an example, the whole movement process of the suturing device 100 will be described in combination with the cooperation of the first operation member 10 and the safety mechanism 130. As shown in fig. 3, 3a, 10 and 11, in the initial state, the tab 40 is in the closed position, the tab gear 42 is in engagement with the first tooth 154, the needle gear 35 is in non-engagement with the third tooth 155, and the needle gear 35 is axially spaced from the third tooth 155; optionally, the second driving part further includes two grooves respectively provided at distal ends of the third tooth part 155 and the fourth tooth part 157, each groove having a distal end limiting wall 158, and the limiting wall 158 abuts against one of the teeth of the suture needle gear 35 to maintain the suture needle gear 35 in the initial position. And at this time, the first mating surface 111 of the first operating member 10 is combined with the first limiting surface 141 of the safety mechanism 130 to prevent the first operating member 10 from performing the first movement, and at this time, the tab 40 cannot be driven. When the driving tab 40 is required to move, the second operating member is operated in the second direction to perform the fourth movement, and the first mating surface 111 and the first limiting surface 141 are switched from the first combination state to the first separation state, as shown in fig. 4; in the first, disengaged state, the first operating member 10 can be driven to perform a first movement, and in conjunction with fig. 12 and 13, in response to the first operating member 10 performing a first movement in a first direction, the first teeth 154 drive the tab gear 42 to move such that the tab 40 moves from the closed position toward the open position, during which the suture needle gear 35 moves proximally relative to the distal stop wall 158 to be adjacent to the third teeth 135, but still in a non-engaged state with the third teeth 155. As shown in fig. 14 and 15, the tab 40 is in the open position, the tab gear 42 is in a non-meshed state with the first tooth 154, and the tab gear 42 abuts against the flat surface of the first driver 152; in connection with fig. 5, the first engagement surface 111 of the first operating element is now moved into engagement with the second stop surface 142 to prevent the second movement of the first operating element 10, and the needle 30 cannot perform the needle-out movement. When the suture needle 30 needs to be driven to move, the second operation member is operated along the second direction to perform the third movement, and the first matching surface 111 and the second limiting surface 142 are switched from the second combination state to the second separation state, as shown in fig. 6; in response to the third movement of the second operating member 131, the first engaging surface 111 and the second limiting surface 142 switch from the second engaging state to the second separating state, as shown in fig. 6; in the second disengaged state, the first operating member 10 can be driven to perform a second movement, and in response to the first operating member 10 performing the second movement in the first direction, the third tooth portion 155 engages with the needle gear 35 to drive the needle gear 35 to move so that the needle performs the needle-out movement, as shown in fig. 16 and 17; during this process, the tab gear 42 is always in abutment with the planar surface of the first drive 152 so that the tab remains in the closed position. As shown in fig. 18 and 19, the needle completes the needle withdrawing operation, and at this time, the third tooth 155 is kept engaged with the needle gear 35.

In this embodiment, the needle tip 34 of the needle 30 is detachably connected to the arm 33. Further, the suture needle 30 further includes a connection part (not shown) detachably connected to the suture needle 34, and fixedly connected to the suture arm 33. Specifically, the connecting portion is a cylinder extending along the length direction of the suture arm 33, and the outer diameter thereof is smaller than the outer diameter of the suture arm 33. The core bar component 20 is provided with a needle retaining port 21, the thread end of the suture thread 31 is connected with a suture needle 34, and the suture needle 30 penetrates out of the hole wall of the puncture hole and then enters the core bar component 20 through the needle retaining port 21. A needle receiving member is provided in the core bar assembly 20, and is positioned in the needle retaining port 21, and the suture needle 34 is fixedly connected with the needle receiving member after entering the needle retaining port 21. Specifically, the needle receiving member includes a receiving portion, a retaining portion, and a receiving tab. The clamping parts are positioned at two sides of the receiving part, the receiving piece is positioned at the center of the receiving part, and the receiving part and the clamping part are integrally formed. The clamping part has a bent shape, and the receiving sheet is an elastic grid sheet or an elastic hollowed sheet with a hollowed structure and is used for clamping the suture needle 34. The receiving sheet is positioned in the needle retaining opening 21, and the suture needle 34 penetrates into the needle retaining opening 21 to be clamped by the receiving sheet after penetrating out of the hole wall of the puncture hole, and the suture needle 34 of the other suture needle 30 is synchronously clamped by the receiving sheet of the needle receiving piece in the same way, so that the suture needle is received. For a specific structure of the needle receiving member and a manner of receiving the needle, reference is made to the description of the known embodiment of publication number CN111870321A, CN111870292a, and details thereof will not be given herein.

When the first operation member 10 is operated in a direction opposite to the first direction, the suture needle 30 is driven to retract; when the suture needle 30 is retracted, the suture needle 34 is disengaged from the suture arm 33 such that the suture needle 34 is retained within the core assembly 20 and the suture arm 33 is retracted into the core assembly 20 through the needle outlet 21. Further, the suture needle 34 is disengaged from the coupling portion such that the suture needle 34 is retained within the stem assembly 20, and the coupling portion and suture arm 33 are retracted into the stem assembly 20 through the needle outlet 21.

In another embodiment, as shown in fig. 19 a-19 b, the needle 34 of the needle 30 is integrally or fixedly connected to the arm 33, the suturing assembly further comprises a needle hub 39 and a suture 31, the needle hub 39 is detachably connected to the needle 31, the needle hub 39 has an axial hole 43 and a radial hole 44 communicating with the axial hole 43, the suture 31 passes through the radial hole 44 and the needle 30 extends into the axial hole 43 to press the suture 31. As can be seen from the above, the driving mechanism 150 is in driving connection with the suture needle 30, and the suture needle 30 is driven by the driving mechanism 150 to move, so as to drive the suture thread 31 to suture the puncture hole. The suture device 100 further comprises a thread removing member (not shown in the drawings), the thread removing member is arranged in the core bar assembly 20, the suture needle 30 drives the needle sleeve 39 and the suture thread 31 to pass through the abdominal wall tissue of the human body, then passes through the needle retaining opening 21 and passes through the thread removing member, and when the suture needle 30 exits from the needle retaining opening 21, the needle sleeve 39 and the thread removing member form a limit stop, so that the needle sleeve 39 is separated from the suture needle 30, and the needle sleeve 39 and the suture thread 31 remain in the core bar assembly 20. For the specific structure and installation of the needle sheath 39 and the suture 31, the specific structure of the thread-releasing member and the connection relationship between the thread-releasing member and the core shaft assembly 20, etc., reference is made to the description of the known embodiment of the application number CN202223427513X, and the detailed description thereof will be omitted.

According to another aspect of the present embodiment, there is provided a stapler 100 including a first operating member 10, a tab 40 connected to the first operating member 10, and a suturing needle 30; first movement of the first operating member 10 in a first direction moves the tab 40 from the closed position to the open position; a second movement of the first operating member 10 in a first direction causes movement of the suture needle 30; suture instrument 100 further includes safety mechanism 130, suture instrument 100 having a first state, a second state, and a third state; in the first state, the first operating member 10 is coupled with the safety mechanism 130 to prevent the first operating member 10 from performing the first movement; in the second state, the first operating member 10 is separated from the safety mechanism 130; in response to the first movement of the first operating member 10, the tab 40 moves from the closed position to the open position; in the open position, the first operating member 10 is coupled to the safety mechanism 130 to prevent the first operating member from performing the second movement; in the third state, the first operating element 10 is separated from the safety mechanism 130, and the suture needle 30 performs a needle withdrawing action in response to the second movement of the first operating element 10; in response to a fourth movement of safety mechanism 130, stapler 100 switches from the first state to the second state; in response to a third movement of safety mechanism 130, stapler 100 switches from the second state to the third state. The stitching instrument has the advantages that on the premise of meeting the positioning and stitching functions of the stitching instrument, the overall structure is simple, and the operation is smooth; and through the cooperation of safety mechanism and first operating element, prevent that the suture needle from being by the maloperation after the wing is expanded, satisfied the needs of operation, safe and reliable.

In this embodiment, the stapler 100 further includes a suture receiving device 200 for receiving the suture 31; when the wing 40 is in the closed position, the suture thread receiving device 200 is in a connected state with the wing 40, and the suture thread receiving device 200 forms a closed suture thread receiving space with the body of the suture instrument 100; in response to the first movement of the first operating member 10, the tab 40 moves from the closed position to the open position; in the open position, suture receiving device 200 is in a separated state from tab 40; in the detached state, in response to the second movement of the first operating member 10, the suture receiving device 200 moves distally to expose the suture receiving space, thereby exposing the suture 31.

In this embodiment, suture receiving device 200 is coupled to tab 40 when tab 40 is in the closed position, and suture receiving device 200 is decoupled from tab 40 when tab 40 is in the open position; with the two in the separated state, the suture receiving device 200 is moved distally to expose the suture receiving space, thereby exposing the suture 31. The original wing 40 of the suture instrument 100 is utilized to connect the suture thread accommodating device 200 to the suture instrument 100, compared with the prior art that the suture thread accommodating device 200 is connected with the suture instrument 100 by arranging an additional structure in the mandrel component 20 of the suture instrument 100, the part of parts is reduced, the whole structure is simple, and the installation is convenient; at the same time, when the wing 40 is in the closed position, the suture receiving device 200 can be reliably and stably connected with the wing 40, when the wing 40 is driven to be in the open position, the wing 40 moves relative to the suture receiving device 200 so as to be separated from the suture receiving device 200, and at the moment, the suture receiving device 200 is in a loose fit state with the body of the suture device 100, and the suture receiving device 200 can move distally only by overcoming the friction force between the suture receiving device 200 and the body of the suture device 100. After the suture thread storage device 200 is separated from the suture thread storage device, the suture thread storage device is driven to move towards the distal end more easily and smoothly; in addition, the stability of the connection and the ease of separation of the suture instrument 100 and the suture receiving device 200 are more compatible than the connection of the two by the additional devices.

Specifically, as shown in fig. 20 to 22, the suture thread storage device 200 includes a storage end 202, the storage end 202 having a rib 204, a storage cavity, and an opening communicating with the storage cavity, the rib 204 dividing the storage cavity into two storage grooves 206, the suture thread 31 being respectively stored in the two storage grooves 206 and a thread end of the suture thread 31 protruding from the storage end 202 from the opening; when tab 40 is in the closed position, receiving end 202 is connected to tab 40 by web 204, receiving end 202 abutting against the body of stapler 100 (distal end of stem assembly 20) to close the opening; when the tab 40 is in the open position, the rib 204 is separated from the tab 40 to separate the receiving end 202 from the tab 40; in the separated state, the receiving end 202 moves distally to expose the receiving slot 206, thereby exposing the suture 31. The holding cavity is divided into two holding grooves 206 by the rib plates 204, the suture thread 31 is respectively held in the two holding grooves 206, the thread ends of the suture thread 31 extend out of the holding ends 202 from the openings, the holding ends 202 are connected with the wing pieces 40 by the rib plates 204, and the holding ends 202 are abutted against the body of the suture instrument 100 and close the openings, so that the suture thread 31 is compressed in the holding grooves 206; when the rib plate 204 and the wing 40 are in a separated state, the accommodating end 202 moves towards the distal end to expose the accommodating groove 206, so that the suture thread 31 does not have a connection relation with other components of the suture thread accommodating device 200 and exists independently, the whole accommodating groove 206 is used for accommodating and storing the suture thread 31, the accommodating end 202 has enough accommodating space, the suture thread accommodating structure 200 is ensured to have stronger thread storage capacity, and the suture thread 31 is respectively accommodated in the two accommodating grooves 206, the overlapping winding caused by the excessive concentration of the accommodating of the suture thread 31 can be avoided, the suture operation of the suture device 100 is ensured, and the normal use of the suture device 100 is ensured.

As shown in fig. 20, the proximal end of the rib 204 has two clamping portions 207 disposed at intervals, and the two clamping portions 207 are disposed opposite to each other and protrude in a direction away from the receiving end 202, thereby forming a moving path therebetween. The flap 40 has mounting portions 43, the mounting portions 43 extending inwardly from the inner side wall of the flap body 41, and when the flap 40 is in the closed position, the two engaging portions 207 are engaged with the two mounting portions 43, respectively. Specifically, the mounting portion 43 is a protrusion extending inward from an inner sidewall of the tab body 41, the protrusion having a proximal mounting surface, and the clamping portion 207 includes a buckle, and a distal surface 205 of the buckle abuts against the proximal mounting surface 45 of the protrusion to connect the rib 204 with the tab 40. Because there is a certain space between the two fins 40, the mounting portion may extend inward for a certain length, and meanwhile, the fins 40 may also have a certain width, and the mounting portion 43 may also have a certain width, so that when the fins 40 are located at the closed position, the engagement of the clamping portion 207 of the rib plate 204 is more stable and reliable. Meanwhile, the driving mechanism 150 drives the wing 40 to move outwards from the closed position to the open position, so that the wing is separated from the clamping part 207 of the rib plate 204, and the wing is relatively easy to separate, namely, the stability of the connection of the wing and the rib plate and the easiness of the separation can be well considered.

The distal end of the core assembly 20 has a second mounting hole 22 and the rib 204 defines a travel limit slot 208 extending in the direction of travel of the receiving end. Suture receiving device 200 also includes a stop 209, and stop 209 passes through second mounting hole 22 and is disposed within movement limiting slot 208. The proximal end of the movement limiting groove 208 stops and limits the rib plate 204 as the rib plate 204 moves distally to abut the limiting member 209. In the present embodiment, the limiting members 209 are two limiting pins, and the limiting pins sequentially pass through the first and second mounting holes 22, the movement limiting groove 208, and the second first mounting hole 22. When the wing 40 is in the closed position, the limit between the rib 204 and the wing 40 is realized by the cooperation of the clamping part 207 and the mounting part 43, and the limit pin does not need to play a limit role. When the receiving end 202 is driven to move distally, the stop pin can abut against the proximal end of the movement limiting groove 208, thereby stopping the rib 204. This does not affect the switching of the position of the receiving end 202, nor prevents the receiving end 202 from being separated from the core bar assembly 20, ensuring the normal use of the suture receiving structure 200.

Preferably, as shown in fig. 21a to 22, in order to better accommodate and install the suture thread 31, the accommodating end 202 has two first notch portions 210, the two first notch portions 210 are located at the opening of the accommodating end 202 and are respectively located at two opposite sides of the accommodating end 202, the two first notch portions 210 are communicated with the two accommodating grooves 206 and the outer surface of the accommodating end 202, and the thread ends at two ends of the suture thread 31 respectively pass through the two first notch portions 210. Specifically, the height of the first notch 210 along the moving direction of the receiving end 202 is greater than or equal to the wire diameter of the suture 31, so that the suture 31 can be accommodated in the first notch 210, and the suture 31 is not extruded when the distal end of the stem assembly 20 abuts against the receiving end 202, so as to avoid damage to the suture 31. Of course, the height of the first notch 210 may be slightly smaller than the wire diameter of the suture thread 31, so that the suture thread 31 is slightly exposed out of the first notch 210, and when the distal end of the stem assembly 20 abuts against the receiving end 202, the suture thread 31 can be pressed against the first notch 210, so that the suture thread 31 can be stably received in the receiving groove 206. The receiving end 202 further has a second notch 211, the second notch 211 is formed in the rib 204 at the opening, the second notch 211 is communicated with the two receiving grooves 206, and at least a part of the suture thread 31 is accommodated in the second notch 211. Specifically, the suture 31 is divided into two parts, which are respectively received in the two receiving grooves 206, and the intermediate line between the two parts is received in the second notch 211, so that the suture 31 can pass through the rib 204. Accordingly, the relationship between the height of the second notch 211 and the wire diameter of the suture 31 is similar to that of the first notch 210, and will not be described here. The rib 204 comprises a first section 212 and a second section 214 which are connected in sequence, wherein the first section 212 is positioned in the containing cavity so as to divide the containing cavity of the containing end 202 into two containing grooves 206, the second section 214 extends out of the containing end 202, and the second section 214 is detachably connected with the wing 40; the second section 214 is provided with the movement limiting groove. In the present embodiment, the width of the second section 214 is smaller than the width of the first section 212, so that a step is formed at the junction between the first section 212 and the second section 214, and the second notch 211 is located at the step formed by the first section 212 and the second section 214. Of course, as shown in fig. 20, the first notch 210 and the second notch 211 may not be provided, and the suture thread 31 may be directly connected to the suture needle 40 after being drawn out from the storage grooves 206 on both sides of the rib 204.

The storage end 202 includes a distal portion, a proximal portion, and a peripheral wall extending from the proximal portion to the distal portion, the distal portion being of a closed structure, the proximal portion having an opening, the opening extending from the opening to the distal portion of the storage end 202 to form a storage cavity, the peripheral wall surrounding the storage cavity, and the first cutout 210 opening at the peripheral wall at the proximal portion. When tab 40 is in the closed position, the proximal end of receiving end 202 abuts the distal end of core assembly 20. For overall appearance, the proximal portion of the receiving end 202 may be circular in cross-section, as shown in fig. 20. In order to facilitate the assembly personnel to hold the receiving end 202 during the assembly, as shown in fig. 21a and 21b, the proximal end portion of the receiving end 202 is cut with a portion corresponding to each of four sides of an elliptical cylinder, and the exposed portion after cutting forms a pinching surface for pinching. Of course, the cross section of the proximal portion may be other shapes, such as oval, etc., and may be selected according to practical requirements.

In an alternative embodiment, the suture 31 is stored in a manner different from the above-mentioned manner that the suture is respectively received in the two receiving grooves 206 and then extends out of the receiving end 202, in this embodiment, the suture receiving device 200 also includes the receiving end 202, the receiving end 202 has a rib plate 204, a receiving cavity and an opening communicating with the receiving cavity, but the middle part of the suture 31 is wound around the rib plate 204, and the thread end of the suture 31 extends out of the receiving end 202 from the opening; in the closed position, receiving end 202 is connected to tab 40 by gusset 204, receiving end 202 abutting against the body of stapler 100 (distal end of stem assembly 20) to close the opening; in the open position, the web 204 is separated from the tab 40 to separate the receiving end 202 from the tab 40; in the separated state, the receiving end 202 moves distally to expose the receiving slot 206, thereby exposing the suture 31.

In another alternative embodiment, the outer surface of the receiving end 202 is provided with a cutting edge for forming the puncture. That is, the stapler 100 in this embodiment has a puncture function.

Referring to fig. 23-26, the state change of the suture receiving device after the tab 40 and needle 30 are in the initial state and actuated will be described. As shown in fig. 23, with the tab 40 in the closed position, the engagement portion 207 of the rib 204 engages the mounting portion 43 of the tab 40, and the suture receiving device 200 forms a closed suture receiving space with the stem assembly 20; the rib 204 also has a driving surface 216 between the two clamping portions 207; the distal end of the driving mechanism 150 is disposed at a first distance from the driving surface 216 of the rib 204 along the axial direction, in this embodiment, specifically, the distal end of the driving mechanism 150 is the distal end of the second driving portion, and the driving mechanism 150 cannot drive the suture thread storage device 200 to move. The drive mechanism 150 drives the flap 40 from the closed position toward the open position, the drive mechanism 150 gradually approaching the drive surface 216 of the gusset 204; in the open position, as shown in fig. 24, the clip 207 is separated from the mounting portion 43 of the tab 40, while the suture receiving device 200 still forms a closed suture receiving space with the stem assembly 20, the distal end of the drive mechanism 150 being axially spaced from the drive surface 216 of the web 204 by a second distance, wherein the second distance is less than the first distance; as shown in fig. 25, the drive mechanism 150 drives the needle 30 to perform a needle-out movement, during which the drive mechanism 150 contacts the drive surface 216 of the rib 204 to drive the suture receiving device 200 distally, thereby exposing a portion of the suture receiving space and exposing the suture 31; as shown in fig. 26, the needle 30 is moved out, the suture receiving device 200 is moved to the distal-most position, and the suture receiving space is completely exposed to a part, and the suture 31 is exposed.

In accordance with another aspect of the present embodiment, there is provided a stapler assembly 1000, as shown in FIG. 27, wherein the stapler assembly 1000 includes a sleeve assembly 300 and the stapler 100 described above, and wherein the stapler 100 is removably sleeved on the sleeve assembly 300.

Referring to fig. 28 to 32, a second embodiment of the present invention is the same as the first embodiment, and the present embodiment relates to a stapler.

The present embodiment differs from the first embodiment in that the first member 110 and the second member 140 are different in structure, specifically, in the present embodiment, as shown in fig. 28 to 32, the first member 110 includes a first limit surface 141 and a second limit surface 142, and the second member 140 includes a first mating surface 111. In the initial state, the first mating surface 111 engages with the first limiting surface 141 to prevent the first operating member 10 from performing the first movement, as shown in fig. 28; in response to the fourth movement of the second operating member 131, the first engaging surface 111 and the first limiting surface 141 switch from the first engaged state to the first disengaged state, as shown in fig. 29; in the first disengaged state, the first operating member 10 is operated to perform a first movement to move the tab 40; when the tab 40 is in the open position, the first engagement surface 111 engages the second stop surface 142 to prevent the second movement of the first operating member 10, and the needle 30 cannot perform the needle-out movement, as shown in fig. 30; in response to the third movement of the second operating member 131, the first engaging surface 111 and the second limiting surface 142 switch from the second engaging state to the second separating state, as shown in fig. 31; in the second separated state, as shown in fig. 32, the first operating member 10 is operated to perform the second movement, thereby driving the suture needle 30 to perform the needle withdrawing movement. On the one hand, on the premise of meeting the positioning and stitching functions of the stitching instrument 100, the stitching instrument 100 has a simple overall structure and is smooth to operate; on the other hand, the cooperation of the safety mechanism 130 and the first operation member 10 prevents the wing 40 and the suture needle 30 from being erroneously operated, thereby further satisfying the operation requirement and being safer and more reliable.

More specifically, the first member 110 is a first protrusion extending downward in the axial direction and having a stepped shape, a lower surface of the first protrusion located at the distal side is a first limiting surface 141, and a lower surface located at the proximal side is a second limiting surface 142; the second member 140 is a second protrusion extending upward in the axial direction, and the upper surface of the second protrusion is the first mating surface 111. In order to make the cooperation between the first operating member 10 and the safety mechanism 130 more stable, the first operating member 10 includes two first protrusions symmetrically disposed on the body of the first operating member 10, and correspondingly, the safety mechanism 130 also includes two second protrusions symmetrically disposed on the body of the safety mechanism 130.

Referring to fig. 33 to 36, a third embodiment of the present invention is the same as the first embodiment, and the present embodiment relates to a stapler.

This embodiment differs from the first embodiment in that the second member 140 is structurally different, and the safety mechanism has only two positions: the initial position and the final position, in this embodiment, do not limit the movement of the tab 40. As shown in fig. 33, in the initial state, the first member 110 and the second member 140 are spaced apart, the first member 110 includes the first mating surface 111, and the second member 140 includes the first limiting surface 141; in the initial state, the second operating member 131 is located at the initial position, the first engaging surface 111 is separated from the first limiting surface 141, and the first operating member 10 can be operated to perform the first movement. As shown in fig. 34, in response to the first operating member 10 performing a first movement, the tab 40 moves from the closed position to the open position; the first member 110 moves from a position of being separated from the second member 140 to a position of being engaged with the second member 140, at which time the first engagement surface 111 engages with the first stop surface 141 to prevent the second movement of the first operating member 10 and the suturing needle 30 is unable to perform the needle-out movement. As shown in fig. 35, in response to the third movement of the second operating member 131 in the second direction, the second operating member 131 moves from the initial position to the final position to separate the second part 140 from the first part 110, at which time the first engaging surface 111 is separated from the first stopper surface 141 again. As shown in fig. 36, when the second member 140 is in a separated state from the first member 110, the first operating member 10 is operated to perform the second movement to cause the suture needle 30 to perform the needle withdrawing action

Specifically, the first member 110 is a first protrusion extending downward in the axial direction, and the second member 140 is a second protrusion extending upward in the axial direction; the lower surface of the first protrusion is a first matching surface 111, and the upper surface of the second protrusion is a first limiting surface 141.

According to another aspect of the present embodiment, there is provided a stapler 100 including a first operating member 10 and a tab 40 and a suturing needle 30 connected to the first operating member 10; first movement of the first operating member 10 in a first direction moves the tab 40 from the closed position to the open position; a second movement of the first operating member 10 in a first direction causes movement of the suture needle 30; suture instrument 100 further includes safety mechanism 130, suture instrument 100 having a first state and a second state; in the first state, the first operating member 10 is disengaged from the safety mechanism 130, and the tab 40 moves from the closed position to the open position in response to the first movement of the first operating member 10; in the open position, the first operating member 10 is coupled to the safety mechanism 130 to prevent the first operating member 10 from performing the second movement; in the second state, the first operating member 10 is separated from the safety mechanism 130, and the suture needle 30 performs a needle withdrawing action in response to the second movement of the first operating member 10 in the second direction; in response to the third movement of safety mechanism 130, stapler 100 switches from the first state to the second state. The suture device 100 of the implementation has simple overall structure and smooth operation on the premise of meeting the positioning and suture functions of the suture device 100; and through the cooperation of the safety mechanism 130 and the first operation piece 10, the suture needle 30 is prevented from being misoperation after the wing 40 is unfolded, so that the operation requirement is met, and the safety mechanism is safe and reliable.

Referring to fig. 37-47, a fourth embodiment of the present invention is directed to a stapler assembly.

This embodiment provides a stapler assembly 1000 that includes the stapler 100 and sleeve assembly 300 of the first and second embodiments. In this embodiment, the stapler 100 further comprises a clamping mechanism 400, and the stapler 100 is detachably connected to the cannula assembly 300 through the clamping mechanism 400; specifically, the clamping mechanism 400 includes a third operating member 401 and a clamping member 402 connected to the third operating member 401, and the stapler 100 is detachably connected to the cartridge assembly 300 through the clamping member 402; the first operating member 10 is coupled to an actuator for driving the actuator, namely the tab 40 and the needle 30; the stapler assembly 1000 has an unlocked state and a locked state; in the unlocked state, safety mechanism 130 is disengaged from third operating member 401, and in response to third operating member 401 being operated, clip member 402 moves from the coupled position with cannulation assembly 300 to the uncoupled position with cannulation assembly 300 to uncouple stapler 100 from cannulation assembly 300; the safety mechanism 130 is combined with the first operation member 10 to lock the first operation member 10; in the locked state, the safety mechanism 130 is coupled to the third operating member 401 to lock the clamping mechanism 400 such that the clamping member 402 remains coupled to the ferrule assembly 300; the safety mechanism 130 is decoupled from the first operating member 10 to unlock the first operating member 10, and the actuator performs a corresponding movement in response to the first operating member 10 being operated.

Because of the safety mechanism 130, when the stapler 100 and the cartridge assembly 300 are detachable, the movement of the first operating member 10 is restricted from driving the actuator, and the first operating member 10 can only be operated to drive the actuator to move when the safety mechanism 130 cooperates with the third operating member 401 to lock the locking mechanism 400 to maintain the connection of the locking member 402 with the cartridge assembly 300. By the arrangement, when the actuating mechanism is driven to move, the clamping mechanism 400 is not operated by mistake, and the stitching instrument 100 is not separated from the sleeve assembly 300, so that the normal operation is effectively ensured. Meanwhile, the safety mechanism 130 can not only play a role in locking and unlocking the first operating member 10, but also play a role in locking and unlocking the clamping mechanism 400, so that the whole stitching instrument assembly 1000 is simple in structure, safe and reliable. In this embodiment, the actuating mechanism is the wing 40 and the suture needle 30, that is, in this embodiment, it can be ensured that the latch mechanism 400 is locked by the safety mechanism 130 in the whole movement process of the suture device 100, so as to prevent the latch mechanism 400 from being misoperated when the wing 40 is opened and the tissue is pulled proximally to be positioned, the suture device 100 is pulled proximally to be separated from the sleeve assembly 300, and the user needs to push the suture device 100 distally again to realize the connection with the sleeve assembly 300 again, so that the inconvenience of the user operation is increased; the locking mechanism 400 can also be prevented from being erroneously operated when the suture needle 30 performs movement, the suture device 100 is pulled proximally to be separated from the sleeve assembly 300, so that the needle outlet is blocked by the sleeve assembly 300 to affect the needle outlet, the needle retaining opening 21 is blocked by the sleeve assembly 300 to affect the suture 31 to be out of line or the suture 31 to be locked between the suture device 100 and the sleeve assembly 300 to affect the normal operation of the operation.

In this example, the third operating member 401 of the clamping mechanism 400 is embodied as a button that is pressed to switch the clamping member 402 from the coupled position with the cartridge assembly 300 to the decoupled position with the cartridge assembly 300 to decouple the stapler 100 from the cartridge assembly 300. The clamping mechanism 400 further comprises a reset element 403, the reset element 403 is connected with the third operating element 401, and when the third operating element 401 is operated, the reset element 403 is compressed and stored energy. The third operation member 401 is released, and the third operation member 401 is restored to the original position by the restoring member 403. More specifically, the reset member 403 is a spring, one end of which is connected to the third operation member 401, and the other end of which abuts against the housing 170 of the stapler 100; the clip 402 includes a catch 404, and the sleeve assembly 300 includes a catch 303, and the catch 404 cooperates with the catch 303 to connect the stapler 100 with the sleeve assembly 300. Referring to fig. 37 to 41, the sleeve assembly 300 includes an upper cartridge cover 301 and a sleeve body 302, the upper cartridge cover 301 is connected with the sleeve body 302, a through hole 304 through which the suture instrument 100 passes is provided in the center of the upper cartridge cover 301, and clamping grooves 303 matched with the clamping hooks 404 are provided on both sides. The third operating member 401 of the locking mechanism 400 is movably connected with the base 170 of the stapler 100, specifically, two first protrusions 405 are symmetrically disposed on the inner wall of the third operating member 401, two grooves matched with the two third operating members 401 are symmetrically disposed on two sides of the base 170, each groove includes a bottom wall 171, two side walls 172 connected with the bottom wall 171 and extending upwards, and when the third operating member 401 is pressed, the two first protrusions 405 are attached to the two side walls 172 and move inwards along the side walls 172, so that the whole movement is smoother. The base 170 further includes a first arm 173, and the first arm 173 extends upward along the bottom of the base 170, and one end of the reset member 403 is connected to the inner wall of the third operating member 401, and the other end is connected to the first arm 173. The clamping member 402 of the clamping mechanism 400 is connected to the third operating member 401 and extends downward from the third operating member 401, the base 71 is provided with the opening 174, and the clamping member 402 extends below the base 71 through the opening 174 and is connected to the clamping groove 303 of the upper bin cover 301 of the sleeve assembly 300. As shown in FIG. 40, in the initial state, the stapler 100 is connected to the cannula assembly 300 by the hook 404 of the clamping member 402, and the clamping member 402 is in the connection position with the cannula assembly 300; pressing the third operating member 401 inward, the third operating member 401 drives the catch 404 of the catch 402 to disengage from the catch groove 303 of the cannula assembly 300, and when pressing the third operating member 401, the stapler 100 is pulled upward to completely disengage from the cannula assembly 300, and the catch 402 is in a separated position from the cannula assembly 300, as shown in fig. 41.

In this embodiment, the safety mechanism 130 has a first position, a second position, and a third position; wherein the first position corresponds to an initial position in the first and second embodiments, the second position corresponds to an intermediate position in the first and second embodiments, and the third position corresponds to a final position in the first and second embodiments. In response to movement of safety mechanism 130 from the first position to the second position, the third position, stapler assembly 1000 is switched from the unlocked state to the locked state; in the first position, the safety mechanism 130 is disengaged from the third operating member 401 to unlock the latch mechanism 400 such that the latch 402 is movable from the coupled position with the hub assembly 300 to the uncoupled position with the hub assembly 300 to uncouple the stapler 100 from the hub assembly 300 in response to the third operating member 401 being operated, and is coupled to the first operating member 10 such that the first operating member 10 is in the first coupled state such that the first operating member 10 cannot be driven, thereby rendering the tab 40 and the stapling needle 3 incapable of being driven to perform the corresponding movement; in the second position, safety mechanism 130 is engaged with third operating member 401 to lock clamping mechanism 400, at which time clamping mechanism 400 cannot be operated, and stapler 100 remains connected to cannula assembly 300; the first operating member 10 is in a first disengaged state that is disengaged from the safety mechanism 130, and the tab 40 moves from the closed position to the open position in response to the first operating member 100 performing a first movement; when the wing 40 is at the open position, the first operation member 10 is in the second combination state with the safety mechanism 130, so that the first operation member 10 cannot be driven, and the suture needle 30 cannot be driven; in the third position, the third operating member 401 is coupled to the safety mechanism 130 and the first operating member 10 is in a second, disengaged state from the safety mechanism 130, and the suturing needle 30 performs a needle-out movement in response to the first operating member 10 performing the second movement. Thus, the clamping mechanism 400 is not operated by mistake when the actuating mechanism is driven to move, and the stitching instrument 100 is not separated from the sleeve assembly 300, so that the normal operation of the operation is effectively ensured; at the same time, the action logic of the wing piece 40 and the suture needle 30 is ensured, and the misoperation of the wing piece 40 and the suture needle 30 is prevented.

Specifically, as can be seen from the first and second embodiments described above, the stapler 100 includes a first member 110, the first member 110 being coupled to the first operating member 10; the safety mechanism 130 includes a second component 140; one of the first and second members 110, 140 includes a first mating surface 111, and the other includes a first stop surface 141 and a second stop surface 142. In this embodiment, the stapler 100 further includes a third member 143, when the safety mechanism 130 is in the first position, the third member 143 is disengaged from the third operating member 401 to unlock the catch mechanism 400 such that the catch 402 can be moved from the coupled position with the cartridge assembly 300 to the uncoupled position with the cartridge assembly 300 to uncouple the stapler 100 from the cartridge assembly 300 in response to the third operating member 401 being operated, and the first mating surface 111 is engaged with the first stop surface 141 such that the first operating member 10 is in the first engaged state such that the tab 40 and the suturing needle 3 cannot be driven to perform a corresponding movement; when the safety mechanism 130 is in the second position, the third member 143 engages the third operating member 401 to lock the latch mechanism 400 to retain the latch 402 in connection with the collar assembly 300, and the first engagement surface 111 is disengaged from the first stop surface 141 such that the first operating member 10 is in the first disengaged state, the tab 40 moves from the closed position to the open position in response to the first operating member 100 performing the first movement; when the wing 40 is in the open position, the first engagement surface 111 engages the second stop surface 142 such that the first operating member 10 is in the second engagement state to prevent movement of the needle 30; in the third position, the third component 143 is combined with the locking mechanism 130 to lock the locking mechanism 400, and the first mating surface 111 is separated from the second limiting surface 142, so that the first operating member 10 is in the second separated state.

More specifically, in an embodiment, as shown in fig. 3 to 7 and 42 to 47, the first member 110 is a first protrusion extending downward in the axial direction, a lower surface of the first protrusion is a first mating surface 111, the second member 140 is a second protrusion extending upward in the axial direction in a stepped shape, an upper surface of the second protrusion located at a proximal side is a first limiting surface 141, and an upper surface located at a distal side is a second limiting surface 142. The number of the third members 143 is two, and the two third members 143 are disposed at intervals along the circumferential side of the safety mechanism 130, specifically, the third members 143 are third protrusions disposed on the circumferential side of the safety mechanism 130 body. The latch mechanism 400 further includes a second protrusion 406 disposed between the two first protrusions 405. As shown in fig. 42 and 43, the safety mechanism 130 includes a second operating member 131, and in the initial state, the safety mechanism 130 is in the first position, and the two third parts 143 are separated from the latch mechanism 400, at which time the latch mechanism 400 can be operated to separate the stapler 100 from the cannula assembly 300, and as described above, the movement of the first operating member 10 is limited, and the movement of the wing 40 and the needle 30 cannot be driven. The second operating member 131 is operated in a second direction to move from the first position to the second position in which the first operating member 10 is unlocked, enabling the tab 40 to be driven from the closed position to the open position, and when moved to the open position, the first operating member 10 is again locked, disabling the needle 30 from being driven, and one of the third members 143 (relatively far from the second operating member 131 in the second direction) engages the second protrusion 406 of the latch mechanism 400 to prevent movement of the latch mechanism 400, as shown in fig. 44 and 45, when the latch mechanism 400 is not operated, the stapler 100 maintains the connection of the cannula assembly 300. Continuing to operate the second operating member 131 in the second direction to move from the second position to the third position, in which the first operating member 10 is again unlocked to enable movement of the needle 30, as seen in fig. 46 and 47, wherein a further third member 143 (relatively adjacent to the second operating member 131 in the second direction) engages the first protrusion 405 of the latch mechanism 400 to prevent movement of the latch mechanism 400, at which time the latch mechanism 400 cannot be operated, and the stapler 100 remains connected to the cannula assembly 300. It will be understood, of course, that the two third parts 143 may be integrally formed as one part, and that the third parts 143 may also function with other parts of the third operating member 401, so long as they are separated from the locking mechanism 400 when the safety mechanism 130 is in the first position, and combined with the locking mechanism 400 when the safety mechanism 130 is in the second and third positions, which is not limited herein.

In another embodiment, the first component 110 is a stepped first protrusion extending downward along the axial direction, the lower surface of the first protrusion located on the distal side is a first limiting surface 141, and the lower surface located on the proximal side is a second limiting surface 142; the second member 140 is a second protrusion extending upward in the axial direction, the upper surface of the second protrusion is the first mating surface 111, and the third member 143 is a third protrusion disposed on the circumferential side of the body of the safety mechanism 130. In this embodiment, the safety mechanism 130 is matched with the locking mechanism 400 through the third protrusion 143, and the matching relationship between the safety mechanism 130 and the locking mechanism 400 is the same as that of the above embodiment, and will not be described herein.

In accordance with another aspect of the present embodiment, there is provided a stapler assembly 1000, comprising a stapler 100 and a sleeve assembly 300; in this embodiment, the stapler 100 further comprises a clamping mechanism 400, and the stapler 100 is detachably connected to the cannula assembly 300 through the clamping mechanism 400; specifically, the clamping mechanism 400 includes a third operating member 401 and a clamping member 402 connected to the third operating member 401, and the stapler 100 is detachably connected to the cartridge assembly 300 through the clamping member 402; the first operating member 10 is coupled to the actuator for driving the actuator in motion; the stapler assembly 1000 has a locked state and an unlocked state; in the unlocked state, the safety mechanism 130 is disengaged from the third operating member 401 to enable the catch 402 to switch from the connected position with the ferrule assembly 300 to the disconnected position with the ferrule assembly 300 in response to the third operating member 401 being operated; in the locked state, the safety mechanism 130 cooperates with the third operating member 401 to lock the clamping mechanism 400 such that the clamping member 402 remains connected to the sleeve assembly 300; the safety mechanism 130 cooperates with the first operating member 10 such that the first operating member 10 is operated to drive movement of the actuator, such as the needle 30 and tab 40 described above, only in the locked state.

Because of the safety mechanism 130, when the stapler 100 and the cartridge assembly 300 are detachable, the movement of the first operating member 10 is restricted from driving the actuator, and the first operating member 10 can only be operated to drive the actuator to move when the safety mechanism 130 cooperates with the third operating member 401 to lock the locking mechanism 400 to maintain the connection of the locking member 402 with the cartridge assembly 300. That is, the safety mechanism 130 cooperates with the first operating member 10 such that the first operating member 10 is operated to drive the actuator to move only in the locked state. By the arrangement, when the actuating mechanism is driven to move, the clamping mechanism 400 is not operated by mistake, and the stitching instrument 100 is not separated from the sleeve assembly 300, so that the normal operation is effectively ensured. Meanwhile, the safety mechanism 130 can not only play a role in locking and unlocking the first operating member 10, but also play a role in locking and unlocking the clamping mechanism 400, so that the whole stitching instrument assembly 1000 is simple in structure, safe and reliable.

Referring to fig. 48 to 53, a fifth embodiment of the present invention is the same as the fourth embodiment, and the present embodiment relates to a stapler assembly.

This embodiment provides a stapler assembly 1000 that includes the stapler 100 and sleeve assembly 300 of the first and second embodiments. Suture instrument 100 further includes a clamping mechanism 400, suture instrument 100 being detachably coupled to cannula assembly 300 by clamping mechanism 400; specifically, the clamping mechanism 400 includes a third operating member 401 and a clamping member 402 connected to the third operating member 401, and the stapler 100 is detachably connected to the cartridge assembly 300 through the clamping member 402; the first operation piece 10 drives the suture needle 30 to move; the safety mechanism 130 includes a first position and a second position; in the first position, the safety mechanism 130 is combined with the first operation member 10 to lock the first operation member 10, thereby preventing the first operation member 10 from driving the suture needle 30 to move; safety mechanism 130 is disengaged from third operating member 401 to unlock clamping mechanism 400, and in response to third operating member 401 being operated, clamping member 402 moves from the coupled position with cannulation assembly 300 to the decoupled position with cannulation assembly 300 to decouple stapler 100 from cannulation assembly 300; in the second position, safety mechanism 130 is coupled to third operating member 401 to lock clamping mechanism 400 such that clamping member 402 remains coupled to ferrule assembly 300; the safety mechanism 130 is disengaged from the first operating member 10 to unlock the first operating member 10 and the suturing needle 30 performs a needle withdrawing movement in response to movement of the first operating member 10. In the present embodiment, the specific structure of the locking mechanism 400, the installation of the safety mechanism 130 and the installation of the sleeve assembly 300 are the same as those of the fourth embodiment, and will not be described herein.

Because of the presence of safety mechanism 130, when stapler 100 and cannula assembly 300 are separable, first operating member 10 is restricted from moving needle 30, and first operating member 10 can only be operated to move needle 30 when safety mechanism 130 cooperates with third operating member 401 to lock catch mechanism 400 to maintain catch 402 in connection with cannula assembly 300. By the arrangement, the clamping mechanism 400 is not operated by mistake when the suture needle 30 is driven to move, and the suture instrument 100 is not separated from the sleeve assembly 300, so that the normal operation is effectively ensured. Meanwhile, the safety mechanism 130 can not only play a role in locking and unlocking the first operating member 10, but also play a role in locking and unlocking the clamping mechanism 400, so that the whole stitching instrument assembly 1000 is simple in structure, safe and reliable. In this embodiment, the locking mechanism 400 is prevented from being erroneously operated when the suture needle 30 performs a movement, and the suture device 100 is pulled proximally out of the sleeve assembly 300, so that the needle outlet is blocked by the sleeve assembly 300 to affect the needle outlet, the needle retaining opening 21 is blocked by the sleeve assembly 300 to affect the suture 31 to be out of line or the suture 31 to be locked between the suture device 100 and the sleeve assembly 300 to affect the normal operation of the operation.

In this embodiment, the stapler 100 includes the tab 40 and the safety mechanism 130 further has an initial position, wherein the initial position corresponds to the initial position in the first and second embodiments, the first position corresponds to the intermediate position in the first and second embodiments, and the second position corresponds to the end position in the first and second embodiments. At the initial position, the first operation member 10 is combined with the safety mechanism 130, and the safety mechanism 130 is separated from the third operation member 401 to unlock the clamping mechanism 400; in response to the movement of the safety mechanism 130 from the initial position to the first position, the first operation member 10 is switched from the first coupling state in which the safety mechanism 130 is coupled to the first uncoupling state in which the safety mechanism 130 is uncoupled; in the first disengaged state, the tab 40 moves from the closed position to the open position in response to movement of the first operating member 10; when the wing 40 is in the open position, the first operating member 10 is in a second engagement state with the safety mechanism 130 to be locked by the safety mechanism 130, thereby preventing the first operating member 10 from driving the suture needle 30 to move; in the first position, safety mechanism 130 is disengaged from third operating member 401 to unlock clamping mechanism 400, and in response to third operating member 401 being operated, clamping member 402 moves from the coupled position with cartridge assembly 300 to the decoupled position with cartridge assembly 300 to decouple stapler 100 from cartridge assembly 300. In response to movement of the safety mechanism 130 from the first position to the second position, the first operating member 10 is switched from a second engaged state in which the safety mechanism 130 is engaged to a second disengaged state in which the safety mechanism 130 is disengaged; in the second separated state, the suture needle 30 performs a needle-out movement in response to the movement of the first operating member 10; in the second position, safety mechanism 130 is coupled to third operating member 401 to lock catch mechanism 400 such that catch 402 remains coupled to ferrule assembly 300. Thus, the suture needle 30 is driven to move, the clamping mechanism 400 is not operated by mistake, the suture device 100 is not separated from the sleeve assembly 300, and the normal operation of the operation is effectively ensured; at the same time, the action logic of the wing piece 40 and the suture needle 30 is ensured, and the misoperation of the wing piece 40 and the suture needle 30 is prevented.

Specifically, as can be seen from the first and second embodiments described above, the stapler 100 includes a first member 110, the first member 110 being coupled to the first operating member 10; the safety mechanism 130 includes a second component 140; one of the first and second members 110, 140 includes a first mating surface 111, and the other includes a first stop surface 141 and a second stop surface 142. In this embodiment, the stapler 100 further includes a third member 143, when the safety mechanism 130 is in the initial position, the third member 143 is disengaged from the third operating member 401 to unlock the catch mechanism 400 such that the catch 402 can move from the coupled position with the cartridge assembly 300 to the decoupled position with the cartridge assembly 300 to disengage the stapler 100 from the cartridge assembly 300 in response to the third operating member 401 being operated, and the first mating surface 111 is engaged with the first stop surface 141 such that the first operating member 10 is in the first engaged state such that the tab 40 and the suturing needle 30 cannot be driven to perform a corresponding movement; when the safety mechanism 130 is in the first position, the third part 143 is separated from the third operating member 401 to unlock the latch mechanism 400, and the first mating surface 111 is separated from the first limiting surface 141 such that the first operating member 10 is in the first separated state, and the tab 40 moves from the closed position to the open position in response to the first operating member 100 performing the first movement; when the wing 40 is in the open position, the first engagement surface 111 engages the second stop surface 142 such that the first operating member 10 is in the second engagement state to prevent movement of the needle 30; in the second position, the third component 143 is combined with the locking mechanism 130 to lock the locking mechanism 400, and the first mating surface 111 is separated from the second limiting surface 142, so that the first operating member 10 is in the second separated state.

More specifically, in an embodiment, as shown in fig. 3 to 7 and 48 to 53, the first member 110 is a first protrusion extending downward in the axial direction, a lower surface of the first protrusion is a first mating surface 111, the second member 140 is a second protrusion extending upward in the axial direction in a stepped shape, an upper surface of the second protrusion located at a proximal side is a first limiting surface 141, and an upper surface located at a distal side is a second limiting surface 142. The third member 143 is one, and the third member 143 is provided along the circumferential side of the safety mechanism 130, specifically, the third member 143 is a third protrusion provided on the circumferential side of the safety mechanism 130 body. The latch mechanism 400 further includes a second protrusion 406 disposed between the two first protrusions 405. As shown in fig. 48 and 49, the safety mechanism 130 includes a second operating member 131, in an initial state, the safety mechanism 130 is in an initial position, the third member 143 is separated from the latch mechanism 400, at which time the latch mechanism 400 can be operated to separate the stapler 100 from the cartridge assembly 300, and the movement of the first operating member 10 is restricted and the movement of the wing 40 and the needle 30 cannot be driven, as shown in fig. 3 and 3 a. Operating the second operating member 131 in the second direction moves it from the initial position to the first position in which the first operating member 10 is unlocked as shown in fig. 4, enabling the flap 40 to be driven from the closed position to the open position; when moved to the open position, the first operating member 10 is again locked and cannot drive movement of the suturing needle 30, as shown in fig. 5, and as shown in fig. 50 and 51, the third member 143 remains disengaged from the catch mechanism 400, and the second operating member 131 is continued to be operated in the second direction from the first position to the second position, as shown in fig. 6 and 7, in which the first operating member 10 is again unlocked and can drive movement of the suturing needle 30, and as shown in fig. 52 and 53, the third member 143 engages the first tab 405 of the catch mechanism 400 to prevent movement of the catch mechanism 400, at which time the catch mechanism 400 cannot be operated and the suturing device 100 retains the attachment of the cannula assembly 300. It will be understood that the third member 143 may also be configured to act on other parts of the third operating element 401, such as the second protrusion 406, so long as it is configured to be separated from the locking mechanism 400 when the safety mechanism 130 is in the initial position and the first position, and to be coupled to the locking mechanism 400 when the safety mechanism 130 is in the second position, which is not limited herein.

Referring to fig. 54 to 57, which are sixth embodiment of the present invention, the present embodiment relates to a stapler assembly, which is the same as the fourth embodiment.

This embodiment provides a stapler assembly 1000 that includes the stapler 100 and sleeve assembly 300 of the third embodiment. Suture instrument 100 further includes a clamping mechanism 400, suture instrument 100 being detachably coupled to cannula assembly 300 by clamping mechanism 400; specifically, the clamping mechanism 400 includes a third operating member 401 and a clamping member 402 connected to the third operating member 401, and the stapler 100 is detachably connected to the cartridge assembly 300 through the clamping member 402; the first operation piece 10 drives the suture needle 30 to move; the safety mechanism 130 includes a first position and a second position; wherein the first position corresponds to an initial position in the third embodiment and the second position corresponds to a final position in the third embodiment. In the first position, the tab 40 moves from the closed position to the open position in response to movement of the first operating member 10; when the wing 40 is in the open position, the first operating member 10 is engaged with the safety mechanism 130 to be locked by the safety mechanism 130, thereby preventing the first operating member 10 from driving the needle 30 to move; and safety mechanism 130 is disengaged from third operating member 401 to unlock clamping mechanism 400, in response to third operating member 401 being operated, clamping member 402 moves from the coupled position with cannulation assembly 300 to the decoupled position with cannulation assembly 300 to decouple stapler 100 from cannulation assembly 300; in the second position, the safety mechanism 130 cooperates with the third operating member 401 to lock the clamping mechanism 400 such that the clamping member 402 remains connected to the sleeve assembly 300; and the safety mechanism 130 is disengaged from the first operating member 10 to unlock the first operating member 10, the suture needle 30 performs a needle withdrawing movement in response to the movement of the first operating member 10. In the present embodiment, the specific structure of the locking mechanism 400, the installation of the safety mechanism 130 and the installation of the sleeve assembly 300 are the same as those of the fourth embodiment, and will not be described herein.

Because of the presence of safety mechanism 130, when stapler 100 and cannula assembly 300 are separable, first operating member 10 is restricted from moving needle 30, and first operating member 10 can only be operated to move needle 30 when safety mechanism 130 cooperates with third operating member 401 to lock catch mechanism 400 to maintain catch 402 in connection with cannula assembly 300. By the arrangement, the clamping mechanism 400 is not operated by mistake when the suture needle 30 is driven to move, and the suture instrument 100 is not separated from the sleeve assembly 300, so that the normal operation is effectively ensured. Meanwhile, the safety mechanism 130 can not only play a role in locking and unlocking the first operating member 10, but also play a role in locking and unlocking the clamping mechanism 400, so that the whole stitching instrument assembly 1000 is simple in structure, safe and reliable. In this embodiment, the locking mechanism 400 is prevented from being erroneously operated when the suture needle 30 performs movement, and the suture instrument 100 is pulled proximally out of the sleeve assembly 300, so that the needle outlet is blocked by the sleeve assembly 300 to affect the needle outlet, the needle outlet 21 is blocked by the sleeve assembly 300 to affect the disconnection of the suture 31 or the suture 31 is locked between the suture instrument 100 and the sleeve assembly 300 to affect the normal operation of the operation.

Specifically, as can be seen from the third embodiment described above, the stapler 100 includes a first member 110, and the first member 110 is connected to the first operation member 10; the safety mechanism 130 includes a second component 140; in this embodiment, stapler 100 further includes a third member 143 that, when safety mechanism 130 is in the first position, moves wing 40 from the closed position to the open position in response to first operation member 10, and first member 110 moves from the position of disengagement from second member 140 to the position of engagement with second member 140 to inhibit movement of needle 30; the disengagement of third member 143 from third operating member 401 to unlock clamping mechanism 400 enables clamping member 402 to move from the coupled position with respect to cartridge assembly 300 to the uncoupled position with respect to cartridge assembly 300 to uncouple stapler 100 from cartridge assembly 300 in response to third operating member 401 being operated. When the safety mechanism 130 is in the second position, the third member 143 is coupled to the catch mechanism 130 to lock the catch mechanism 400, and the first member 110 is decoupled from the second member 140, and the suturing needle 30 performs a needle-out movement in response to the second movement of the first operating member 10.

More specifically, in one embodiment, as shown in fig. 33-36 and 54-57, the first member 110 is a first protrusion extending axially downward, and the second member 140 is a second protrusion extending axially upward; the third member 143 is a third protrusion provided on the peripheral side of the safety mechanism 130 body. The lower surface of the first protrusion is a first matching surface 111, and the upper surface of the second protrusion is a first limiting surface 141. The latch mechanism 400 further includes a second protrusion 406 disposed between the two first protrusions 405. As shown in fig. 54 and 55, the safety mechanism 130 includes a second operating member 131, in an initial state, the safety mechanism 130 is in a first position, the third member 143 is separated from the latch mechanism 400, the latch mechanism 400 is operable to separate the stapler 100 from the cartridge assembly 300, and the first member 110 is spaced apart from the second member 140, the first operating member 10 is operable, in response to the first operating member 10 being operated, to move the tab 40 from the closed position to the open position, as shown in fig. 33, wherein the first member 110 includes the first mating surface 111 and the second member 140 includes the first limiting surface 141; in the initial state, the first engagement surface 111 is separated from the first limiting surface 141, and the first operating member 10 can be operated to perform the first movement. When the wing 40 moves to the open position, the first part 110 moves from the position separated from the second part 140 to the position combined with the second part 140, and at this time, the first matching surface 111 is combined with the first limiting surface 141 to prevent the second movement of the first operating element 10, that is, the first operating element 10 is locked, so that the suture needle 30 cannot be driven to move, as shown in fig. 34, and the third part 143 is still separated from the clamping mechanism 400, as shown in fig. 54 and 55. The second operation member 131 is continuously operated in the second direction to move from the first position to the second position. In the second position, as shown in fig. 35 and 36, the second member 140 is disengaged from the first member 110, at which time the first engagement surface 111 is again disengaged from the first stop surface 141, such that the first operating element 10 is unlocked, allowing movement of the suture needle 30 to be driven, and, as shown in fig. 56 and 57, the third member 143 engages the first tab 405 of the latch mechanism 400 to prevent movement of the latch mechanism 400, at which time the latch mechanism 400 cannot be operated, and the suture 100 maintains the connection of the cannula assembly 300. It will be understood, of course, that the third member 143 may also function with other parts of the third operating element 401, such as the second protrusion 406, so long as it is separated from the locking mechanism 400 when the safety mechanism 130 is in the first position, and is coupled to the locking mechanism 400 when the safety mechanism 130 is in the second position, which is not limited herein.

It should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is for clarity only, and that the skilled artisan should recognize that the embodiments may be combined as appropriate to form other embodiments that will be understood by those skilled in the art.

The above list of detailed descriptions is only specific to practical embodiments of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent embodiments or modifications that do not depart from the spirit of the present invention should be included in the scope of the present invention.

Claims

1. A stapler, characterized in that the stapler comprises a first operation piece, a wing and a sewing needle which are connected with the first operation piece; a first movement of the first operating member in a first direction moves the tab from a closed position to an open position; a second movement of the first operating member in a first direction moves the suturing needle; the stapler further comprises a safety mechanism and a first part, wherein the first part is connected with the first operation piece, and the safety mechanism comprises a second operation piece and a second part connected with the second operation piece; when the tab is in the open position, the first member and the second member combine to prevent the first operator from performing the second movement, thereby preventing the needle from moving; in response to a third movement of the second operating member in a second direction, the second member is separated from the first member; after the second component is separated from the first component, the suture needle moves to perform a needle-out action in response to the first operation piece performing the second movement.

2. The stapler of claim 1, wherein in an initial state, the tab is in the closed position, the second member engages the first member to inhibit the first movement of the first operating member; the movement of the second operating member in the second direction further includes a fourth movement, the fourth movement being performed in response to the second operating member, the second component being separated from the first component to enable the first operating member to perform the first movement.

3. The stapler of claim 2, wherein one of the first member and the second member comprises a first mating surface, and wherein the other comprises a first stop surface and a second stop surface; the first matching surface is combined with the first limiting surface to prevent the first operation piece from executing the first movement in the initial state, and the first matching surface and the first limiting surface are switched from a first combined state to a first separated state in response to the fourth movement of the second operation piece; operating the first operating member to perform the first movement when in the first disengaged state;

the first engagement surface engaging the second stop surface to prevent the second movement of the first operating member when the tab is in the open position; in response to the third movement of the second operating member, the first mating surface and the second limiting surface switch from a second engaged state to a second disengaged state; in the second separated state, the first operating member is operated to perform the second movement.

4. The stapler according to claim 3, wherein said first member is a first protrusion extending axially downward, a lower surface of said first protrusion is said first mating surface, said second member is a second protrusion extending axially upward in a stepped shape, an upper surface of said second protrusion on a proximal side is said first stopper surface, and an upper surface on a distal side is said second stopper surface.

5. The stapler according to claim 3, wherein said first member is a first protrusion extending axially downward in a stepped manner, a distal lower surface of said first protrusion being said first stop surface, a proximal lower surface being said second stop surface; the second part is a second bulge extending upwards along the axial direction, and the upper surface of the second bulge is the first matching surface.

6. The stapler of claim 1, wherein in an initial state, the tab is in the closed position, the first member is spaced apart from the second member, the first movement is performed in response to the first operation member, and the tab moves from the closed position to the open position; the first component moves from a position spaced from the second component to a position engaged with the second component.

7. The stapler of claim 6, wherein the first member is a first protrusion extending axially downward and the second member is a second protrusion extending axially upward; the lower surface of the first protrusion is coupled with the upper surface of the second protrusion such that the first member is coupled with the second member.

8. The stapler of claim 1, wherein the first direction is axial and the second direction is circumferential.

9. The stapler of claim 1, wherein the first motion and the second motion are both linear motions and the motion along the second direction is a rotational motion.

10. The stapler of claim 1, wherein the first member abuts the second member in the first direction such that the first member is bonded to the second member.

11. The stapler of claim 1, further comprising a drive mechanism by which the first operating member drives the tab and the suturing needle into movement; the driving mechanism comprises a first driving part and a second driving part, the first driving part and the second driving part are arranged at intervals along the axial direction, the first driving part is used for driving the wing pieces to move, and the second driving part is used for driving the suture needles to move.

12. The stapler of claim 11, wherein the first drive portion comprises a first tooth portion and a second tooth portion, the second drive portion comprises a third tooth portion and a fourth tooth portion; the stitching instrument comprises two fins and two stitching needles, each fin comprises a fin gear, each stitching needle comprises a stitching needle gear, the first tooth part and the second tooth part are used for driving one fin gear to drive two fins to move respectively, and the third tooth part and the fourth tooth part are used for driving one stitching needle gear to drive two stitching needles to execute the needle outlet action respectively.

13. The stapler of claim 12, wherein the first and second teeth are laterally spaced apart, and the third and fourth teeth are laterally positioned between the first and second teeth.

14. The stapler of claim 11, wherein the needle and the tab are coaxially disposed in a lateral direction.

15. A stapler, characterized in that the stapler comprises a first operation piece, a wing and a sewing needle which are connected with the first operation piece; a first movement of the first operating member in a first direction moves the tab from a closed position to an open position; a second movement of the first operating member in a first direction moves the suturing needle; the stapler further includes a safety mechanism, the stapler having a first state, a second state, and a third state; in the first state, the first operating member is coupled to the safety mechanism to prevent the first operating member from performing the first movement; in the second state, the first operating member is separated from the safety mechanism; the tab moves from the closed position to the open position in response to a first movement of the first operating member; in the open position, the first operating member is coupled to the safety mechanism to prevent the first operating member from performing the second movement; in the third state, the first operating member is separated from the safety mechanism, and the suture needle moves to execute a needle-out action in response to the second movement of the first operating member; responsive to a fourth movement of the safety mechanism in a second direction, the stapler switches from the first state to the second state; responsive to a third movement of the safety mechanism in a second direction, the stapler switches the third state from the second state; the first direction is axial, and the second direction is circumferential.

16. A stapler, characterized in that the stapler comprises a first operation piece, a wing and a sewing needle which are connected with the first operation piece; a first movement of the first operating member in a first direction moves the tab from a closed position to an open position; a second movement of the first operating member in a first direction moves the suturing needle; the stapler further includes a safety mechanism, the stapler having a first state and a second state; in the first state, the first operating member is disengaged from the safety mechanism, and the tab moves from the closed position to the open position in response to a first movement of the first operating member; in the open position, the first operating member is coupled to the safety mechanism to prevent the first operating member from performing the second movement; in the second state, the first operating member is separated from the safety mechanism, and the suture needle moves to execute a needle-out action in response to the second movement of the first operating member; responsive to a third movement of the safety mechanism in a second direction, the stapler is switched from the first state to the second state; the first direction is axial, and the second direction is circumferential.

17. A stapler assembly comprising a sleeve assembly and a stapler according to any one of claims 1 to 16, the stapler being removably received in the sleeve assembly.