Suture device

Abstract

The present invention discloses a suturing device comprising a handle and a sheath connected to each other. The suturing device also includes a suturing needle, a suturing arm, and a suture thread. At least one end of the suture thread can be located on the suturing arm, and the suturing arm has a mutually convertible conveying state and an expanded state. In the expanded state, the distal end of the suturing needle can be connected to the suturing arm, allowing at least one end of the suture thread to be withdrawn from the suturing arm. The suturing needle and suture thread are disposed within the sheath, the suturing arm is disposed at or near the distal end of the sheath, and the proximal end of the suturing needle is disposed on the handle.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a suturing device. Background Art

[0002] Patent foramen ovale (PFO) was previously considered a benign condition with no known harm. However, recent clinical research has led experts to agree that PFO is a cause of unexplained stroke, migraines, and paradoxical embolism. Therefore, PFO closure is necessary.

[0003] In the prior art, the purpose of treatment is achieved by placing an occluder to block the foramen ovale. Existing occluders generally include an integrated occluder body composed of two occluding discs, which are respectively located on both sides of the membrane wall to achieve the function of fixing and sealing the occluder relative to the membrane wall. There is contact friction between the two occluding discs and the membrane wall, which makes it difficult to adjust the position of the occluder relative to the membrane wall, affecting the occluder's blocking effect on the membrane wall defect. In addition, the distance between the two occluding discs of the integrated occluder body is constant and cannot be adjusted. If the membrane wall is thin, the occluder may not be able to block firmly. If the membrane wall is thick, it may cause excessive squeezing and damage to the membrane wall, increasing the risk of complications. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present application provides an interventional suturing device.

[0005] The present invention solves the technical problem by the following technical solutions:

[0006] The suturing device provided by an embodiment of the present invention includes a suturing needle, a suturing arm and a suturing thread, at least one end of the suturing thread is located on the suturing arm, and the distal end of the suturing needle can be connected to the suturing arm to withdraw at least one end of the suturing thread from the suturing arm. The suturing device also includes a handle, and the handle includes an actuating assembly, a needle seat, a sleeve-like structure, a handle housing and a sleeve-like structure housing.

[0007] The sleeve-like structure housing is arranged outside the sleeve-like structure and is connected to the sleeve-like structure, the sleeve-like structure is connected to the needle seat, the needle seat is connected to the proximal end of the suturing needle, the actuating assembly and the needle seat are detachably connected, the actuating assembly is arranged in the handle housing, and the actuating assembly controls the extension and retraction of the suturing needle through the needle seat. When the suturing needle is extended, the distal end of the suturing needle can be connected to the suturing arm.

[0008] The handle shell and the sleeve-like structure shell are detachably connected, and a release-aiding member is provided on at least one of the handle shell, the sleeve-like structure shell or the sleeve-like structure. When the sleeve-like structure shell and the handle shell begin to be released, the release-aiding member is used to move the handle shell away from the sleeve-like structure shell until the handle shell and the sleeve-like structure shell are completely released. The sleeve-like structure shell drives the needle seat to disengage from the actuating assembly through the sleeve-like structure, so that the suture needle is withdrawn from the handle.

[0009] The above-mentioned suturing device is provided with a release-aiding member. When the sleeve-like structure shell and the handle shell begin to release, the release-aiding member is used to move the handle shell away from the sleeve-like structure shell until the handle shell and the sleeve-like structure shell are completely released. The sleeve-like structure shell drives the needle seat to disengage from the actuating assembly through the sleeve-like structure, so that the suture needle is withdrawn from the handle. This arrangement facilitates the suture needle with the suture thread to be moved proximally until it is withdrawn from the handle after the suture needle in the suturing device completes suturing, so that the suture needle with the suture thread is immediately moved to the proximal end until it is withdrawn from the handle, which is convenient for capturing the free end of the suture thread for subsequent locking operations, and at the same time avoids the subsequent operations of the suturing device from causing pulling and tearing of the sutured tissue. Furthermore, due to the provision of the release-aiding member, the sleeve-like structure shell and the handle shell are released more conveniently and smoothly, so that the suture needle has less resistance to withdrawing from the handle, which can further reduce the pulling and tearing of the tissue, thereby causing suture failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0011] Figure 1 Schematic diagram of the structure of a suturing device according to one embodiment;

[0012] Figure 2 FIG1 is a partial structural schematic diagram of a suturing device with a suturing arm in an expanded state according to an embodiment;

[0013] Figure 3 This is a schematic diagram of the exploded structure of a suturing device according to one embodiment;

[0014] Figure 4 for Figure 3 Schematic diagram of the enlarged structure of part A;

[0015] Figure 5 is a partial structural schematic diagram of a suturing device according to an embodiment;

[0016] Figure 6 is a partial structural cross-sectional diagram of a suturing device having a first control member in an initial state according to one embodiment;

[0017] Figure 7 It is a partial structural cross-sectional schematic diagram of a suturing device with a first control member in a locked state according to one embodiment;

[0018] Figure 8a This is a schematic structural diagram of a slider assembly 8 according to an embodiment; Figure 8b Schematic diagram of the exploded structure of the slider assembly 8 according to one embodiment of the present invention;

[0019] Figure 9 This is a simplified structural diagram showing the motion relationship between the first control member and the first connecting member according to an embodiment;

[0020] Figure 10 is a simplified structural diagram illustrating the motion relationship between the first control member and the first connecting member according to another embodiment;

[0021] Figure 11 is a partial structural schematic diagram of a suturing device according to an embodiment;

[0022] Figure 12a It is a partial structural cross-sectional schematic diagram of a suturing device having a first control member in an initial state according to one embodiment; Figure 12b It is a partial structural cross-sectional schematic diagram of a suturing device with a first control member in a locked state according to one embodiment;

[0023] Figure 13 FIG1 is a partial structural schematic diagram of a suturing device with a suturing arm in an expanded state according to another embodiment;

[0024] Figure 14 is a partial structural schematic diagram of a suturing device according to an embodiment;

[0025] Figure 15a is a schematic cross-sectional view of a portion of the structure of a suturing device at a certain moment in an embodiment; Figure 15b is a schematic cross-sectional view of a portion of the structure of a suturing device of an embodiment at another moment; Figure 15c is a partial structural cross-sectional diagram of a suturing device at another moment in an embodiment;

[0026] Figure 16a A schematic diagram of a partial structure of a suturing device according to an embodiment from one perspective; Figure 16b A schematic diagram of a partial structure of a suturing device according to an embodiment from another perspective; Figure 16c A partial structural cross-sectional diagram of a suturing device according to an embodiment from another perspective;

[0027] Figure 17a A partial structural cross-sectional diagram of a suturing device according to an embodiment; Figure 17b for Figure 17a Schematic diagram of some structures in ;

[0028] Figure 18 This is a schematic diagram of the handle structure of a suturing device according to one embodiment;

[0029] Figure 19 This is a schematic structural diagram of a release aid according to an embodiment;

[0030] Figure 20a 、 Figure 20b and Figure 20c They are schematic structural diagrams of different states of a handle of a suturing device according to an embodiment;

[0031] Figure 21 This is a partial structural diagram of a handle housing of a suturing device according to one embodiment;

[0032] Figure 22a 、 Figure 22b and Figure 22c Schematic diagrams of the release process of the matching piece of the handle housing, the inclined surface structure and the connecting piece of the sleeve-shaped structure housing in one embodiment;

[0033] Figure 23a A partial structural cross-sectional diagram of a suturing device according to an embodiment; Figure 23b for Figure 23a A structural diagram of a thread cutter from one perspective; Figure 23c for Figure 23a A structural diagram of the thread trimmer from another perspective;

[0034] Figure 24a This is a structural diagram of the first control member in an initial state cooperating with the cable drum according to an embodiment; Figure 24b This is a structural diagram of the first control member in a locked state cooperating with the cable drum according to an embodiment; Figure 24c This is a schematic diagram of the connection between the suture coil and the suture thread according to one embodiment;

[0035] Figure 25 for Figure 3 Schematic diagram of the enlarged structure of part B;

[0036] Figure 26 This is a partial exploded schematic diagram of the structure of a suturing device according to one embodiment;

[0037] Figure 27a is a schematic structural diagram of a first control member in an initial state according to an embodiment; Figure 27b This is a structural schematic diagram of a first control member in a locked state according to an embodiment;

[0038] Figure 28a is a partial structural cross-sectional diagram of a suturing device having a first control member in an initial state according to one embodiment; Figure 28b for Figure 28a A schematic cross-sectional view of the first control member in an initial state; Figure 28c It is a partial structural cross-sectional schematic diagram of a suturing device with a first control member in a locked state according to one embodiment; Figure 28d for Figure 28c A cross-sectional schematic diagram of the first control member in a locked state;

[0039] Figure 29 A partial structural cross-sectional diagram of a suturing device according to an embodiment;

[0040] Figure 30a is a partial structural schematic diagram of a suturing device according to an embodiment; Figure 30b for Figure 30a Schematic diagram of the middle knob;

[0041] Figure 31a is a partial structural schematic diagram of a suturing device according to an embodiment; Figure 31b for Figure 31a Schematic diagram of part of the structure;

[0042] Figure 32 This is a partial exploded schematic diagram of the structure of a suturing device according to one embodiment;

[0043] Figure 33 This is a schematic diagram of the receiving structure of an embodiment;

[0044] Figure 34a This is a schematic diagram of the state of the suture line at a certain moment during the process of suturing the foramen ovale by a suturing device according to one embodiment; Figure 34b This is a schematic diagram of the state of the suture line at a certain moment during the process of suturing the foramen ovale by a suturing device according to one embodiment; Figure 34c This is a schematic diagram of the state of the suture line at a certain moment during the process of suturing the foramen ovale by a suturing device according to one embodiment. DETAILED DESCRIPTION

[0045] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, specific embodiments of the present invention are now described in detail with reference to the accompanying drawings.

[0046] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0047] It should be understood that the terms used herein are for the purpose of describing specific example embodiments only and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "comprise", "include", "contain" and "have" are inclusive and therefore specify the presence of stated features, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the specific order described or illustrated, unless the order of execution is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0048] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates otherwise, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teachings of the exemplary embodiments.

[0049] For ease of description, spatially relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figures, such as "inside," "outside," "inside," "outside," "below," "beneath," "above," and the like. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is flipped, an element described as "below" or "beneath" another element or feature would then be oriented as "above" or "above" the other element or feature. Thus, the example term "below" can encompass both above and below orientations. The device may be otherwise oriented (rotated 90 degrees or in other orientations) and the spatially relative descriptors used herein are interpreted accordingly.

[0050] It should be noted that the terms "distal" and "proximal" are commonly used in the field of interventional medical devices. "Distal" refers to the end away from the operator during surgery, while "proximal" refers to the end closer to the operator. Axial refers to the direction parallel to the line connecting the distal and proximal centers of the medical device; radial refers to the direction perpendicular to the axial direction.

[0051] The suturing device in the embodiment of the present invention includes but is not limited to being used for suturing patent foramen ovale, edge-to-edge suturing and repair of valves, suturing and repairing chordae tendineae, suturing blood vessels, etc.

[0052] See Figure 1 and Figure 2 This embodiment provides a suturing device 100, comprising a handle 1 and a sheath 2 connected to each other. The suturing device 100 further comprises a suturing needle 3, a suturing arm 4, and a suture thread 5. At least one end of the suture thread 5 can be located on the suturing arm 4. The suturing arm 4 has a mutually convertible conveying state and an expanded state. When in the expanded state, the distal end of the suturing needle 3 can be connected to the suturing arm 4, and at least one end of the suture thread 5 can be withdrawn from the suturing arm 4. The suturing needle 3 and the suture thread 5 are disposed within the sheath 2, the suturing arm 4 is disposed at or near the distal end of the sheath 2, and the proximal end of the suturing needle 3 is disposed on the handle 1. Figure 1 The suture arm 4 is in the transporting state, the suture arm 4 has not been deployed, and the suture needle 3 has not been extended; Figure 2 The suturing arm 4 is in the expanded state, the suturing needle 3 has been extended, and the distal end of the suturing needle 3 is about to be connected to the suturing arm 4 .

[0053] See Figures 3 to 7 In one embodiment, the suturing device 100 further includes a first connecting member 6, a second connecting member 7, a slider assembly 8 and a first control member 9. Figure 8a and Figure 8b As shown, the slider assembly 8 includes a first slider 81, a second slider 82 and an elastic member 83 connected to each other. The second slider 82 and the elastic member 83 are axially arranged in the first slider 81. The second slider 82 and the first slider 81 can move relative to each other. Figure 4 、 Figure 6 and Figure 7 As shown, the two ends of the first connecting member 6 are respectively connected to the first slider 81 and the first control member 9, and the two ends of the second connecting member 7 are respectively connected to the suturing arm 4 and the second slider 82, so that the movement of the first slider 81 is controlled by the first control member 9, and the first slider 81 drives the second slider 82 to move through the elastic member 83, thereby controlling the movement of the suturing arm 4, that is, switching from the conveying state to the unfolding state.

[0054] The first control member 9 has an initial state and a locked state. Figure 6 The first control element 9 is in the initial state, Figure 7The first control member 9 is in a locked state. During the movement of the first control member 9 from the initial state to the locked state, the suturing arm 4 is transformed from the conveying state to the deployed state. The first control member 9 drives the first slider 81 to move axially in the first direction a via the first connecting member 6, forming a first movement stroke relative to the handle housing. The first slider 81 drives the second slider 82 to move axially in the first direction a via the elastic member 83, forming a second movement stroke relative to the handle housing. The first movement stroke is greater than the second movement stroke, so that the elastic member 83 can generate elastic deformation within the first slider 81.

[0055] In this embodiment, see Figure 2 and Figure 4 The suturing arm 4 is converted from the transport state to the deployed state by moving the second connecting member 7 along the first direction a, driving the suturing arm 4 to move in the first direction a along the slide rail 11 on the inner wall of the sheath tube 2. The sheath tube 2 is also provided with an opening 12, so that the suturing arm 4 can slowly deploy through the opening 12 during the movement until the suturing arm 4 moves to abut against the inner wall of the opening 12 on the sheath tube 2. In this embodiment, the first direction a is from the distal end to the proximal end. In other embodiments, the first direction a can also be from the proximal end to the distal end.

[0056] It can be understood that since the second slider 82 is connected to the suturing arm 4 through the second connecting member 7, the second slider 82 moves axially in the first direction a, driving the second connecting member 7 and the suturing arm 4 to move axially in the first direction a until the suturing arm 4 moves to abut the inner wall of the opening 12 on the sheath 2. At this time, the second connecting member 7 and the suturing arm 4 can no longer move in the first direction a, and the suturing arm 4 is in an expanded state. It can be considered that the first control member 9 is in a pre-locking state at this time. The pre-locking state is a state between the initial state and the locked state. In the pre-locking state, the second slider 82 connected to the second connecting member 7 is also stationary relative to the outer shell because the second connecting member 7 cannot continue to move in the first direction a, that is, the second slider 82 has completed the second movement stroke. However, at this time, because the suturing arm 4 can still be restored to the conveying state under the action of external force, the suturing arm 4 is not in a true locked state, and the first control member 9 has only reached the pre-locking state but not the locked state. Next, if the first control member 9 continues to be moved along the original direction, the first connecting member 6 can drive the first slider 81 to continue to move axially in the first direction a, and finally the first movement stroke is greater than the second movement stroke, thereby causing the elastic member 83 between the first slider 81 and the second slider 82 to produce elastic deformation in the first slider 81. When the first control member 9 reaches the locked state, a force balance can be achieved between the force applied to the first slider 81 by the first control member 9 in the locked state, the force applied to the first slider 81 by the elastic member that generates the above-mentioned elastic deformation, and the friction force applied to the first slider 81 by the handle housing 10, so that the first control member 9, the first connecting member 6, the first slider 81, the elastic member 83, and the second slider 82 can all remain stationary relative to the handle housing 10, that is, the first control member 9, the first connecting member 6, the first slider 81, the elastic member 83, and the second slider 82 can remain relatively fixed, which can prevent the suturing arm 4 from rebounding back to the conveying state or an uncertain state between the conveying state and the unfolded state, thereby achieving relative fixation of the suturing arm 4 and the handle housing 10, that is, by locking the first control member 9, the suturing arm 4 in the unfolded state is locked, and the second slider 82 is prevented from moving uncertainly under the action of unexpected external force, thereby facilitating the connection between the suturing needle 3 and the suturing arm 4 and improving the success rate of the operation.

[0057] It is understood that the elastic member 83 may have a small initial compressive elastic deformation before the above-mentioned elastic deformation occurs. The elastic member 83 with the initial elastic deformation is placed in the first slider 81, and its two ends are respectively connected to the first slider 81 and the second slider 82. Due to the small initial elastic deformation, it cannot offset the static friction of the first slider 81 and the second slider 82, and cannot drive the suturing arm 4 to move. Therefore, before the above-mentioned elastic deformation occurs, it cannot drive the second slider 82 and the suturing arm 4 to move, so that the suturing arm 4 remains in the conveying state. In other embodiments, the elastic member 83 may be in a natural state before the above-mentioned elastic deformation occurs, without the initial elastic deformation. In this case, the elastic member may be located on the proximal side of the second slider, or on the distal side of the second slider. In other embodiments, the elastic member 83 may have a small initial tensile elastic deformation before the above-mentioned elastic deformation occurs. In this case, the second slider may be located on the distal side of the elastic member, with the proximal end of the elastic member connected to the first slider and the distal end of the elastic member connected to the second slider.

[0058] In this example, see Figure 5 The first control member 9 includes a first operating portion 91 and a main body 92 that are connected to each other. The first operating portion 91 is used for operator operation. Rotating the first operating portion 91 can drive the main body 92 to rotate. The first connecting member 6 is connected to the main body 92. In other embodiments, the first operating portion 91 may not be provided, and the main body 92 can be rotated directly. When locking is required, the main body 92 can be locked using a separate locking member or directly by hand.

[0059] See Figure 9 , Figure 9 A schematic diagram illustrating the trajectory of the first control member 9 from its initial state to its locked state shows the first connection point 61 between the first connector 6 and the main body 92, and the second connection point 62 between the first connector 6 and the first slider 81. As the main body 92 rotates, the first connection point 61 between the first connector 6 and the main body 92 rotates along direction b, moving from 61a to 61b and finally to 61c. The first connection point 61 moves in a circular arc on the main body 92, forming an arc path S. The second connection point 62 between the first connector 6 and the first slider 81 moves axially, from 62a to 62b and finally to 62c. This design converts circular motion into linear motion, enhancing operability and user experience.

[0060] Specifically, the arc path S includes a starting end 61a and an ending end 61c, and the arc path S also includes a transition point 61b, which is located between the starting end 61a and the ending end 61c in the arc path S. When the end of the first connecting member 6 connected to the main body 92 of the first control member 9 is located at the transition point 61b, the axial distance between the central rotation point O of the main body 92 of the first control member 9 and the first slider 81 is the largest. At this time, the axial movement distance of the first slider 81 is the farthest, and the degree of elastic deformation of the elastic member 83 is the largest. However, at this time, the first The control member 9 has not reached the locked position, that is, it has not reached the locked state. The first control member 9 continues to move in the original direction, driving the first slider 81 to move in the direction opposite to the first direction a. At this time, the elastic deformation of the elastic member 83 becomes slightly smaller until the first control member 9 reaches the locked position. In the locked position, the first control member 9 is limited or locked by other components (such as the handle housing), so that the elastically deformed elastic member 83 cannot drive the first slider 81 to move in the direction opposite to the first direction a, thereby ensuring the locked state of the first control member 9. It can be understood that the above-mentioned "elastically deformed elastic member 83 applies force to the first slider 81, thereby driving the first slider 81 to move in a direction opposite to the first direction a". In this process, even if the first slider 81 has moved a distance in the direction opposite to the first direction a, as long as the first movement stroke is still greater than the second movement stroke, that is, the distance the first slider 81 moves in the first direction a is still greater than the distance the second slider 82 moves in the first direction a, the elastic deformation force of the elastic member 83 still acts on the second slider 82 in the first direction a, so that the second slider 82 remains stationary and the suture arm 4 connected to the second slider 82 remains in the expanded state.

[0061] exist Figure 9In the pre-locking state, the first connection point between the first connecting member 6 and the main body 92 is located at the pre-locking point 61e, which can be located between the starting end 61a and the transition point 61b in the arc path S. During the process of the first connection point between the first connecting member 6 and the main body 92 moving from the starting end 61a to the pre-locking point 61e, the first slider 81 drives the second slider 82 to move together until the second slider 82 completes the second movement stroke, thereby driving the suturing arm 4 from the conveying state to the deployed state. However, the suturing arm 4 cannot be locked in the deployed state because there is no special design of a locking member other than the handle housing 10 to resist it. Therefore, it can still move toward the conveying state under unexpected external forces. During the process of the first connection point between the first connecting member 6 and the main body 92 moving from the pre-locking point 61e to the terminal end 61c, the elastic member 83 undergoes elastic deformation in the first slider 81 until the first control member 9 is in the locked state. At this time, the suturing arm 4 is also in the locked state and cannot move relative to the handle housing 10. Therefore, the first control member 9 can only be locked when the first connection point between the first connection member 6 and the main body 92 is located behind the pre-locking point 61e. It can be understood that the transition point 61b is located between the pre-locking point 61e and the terminal end 61c.

[0062] See Figure 3 and Figure 5 The handle 1 includes a handle housing 10, a slider assembly 8, a first connecting member 6, and a main body 92 disposed in the handle housing 10, and a first operating portion 91 passing through the handle housing 10 and disposed outside the handle housing 10. Figure 5 As shown, when the first operating portion 91 is in the locked state, the first operating portion 91 abuts against the handle housing 10. Figure 5 、 Figure 11 and Figure 24a The first operating part 91 includes a first arm 911, a second arm 912 and a connecting arm 913. The connecting arm 913 is respectively connected to one end of the first arm 911 and one end of the second arm 912. The other end of the first arm 911 and the other end of the second arm 912 are respectively connected to the main body 92. The operator can hold the connecting arm 913 to operate the movement of the first operating part 91. The connecting arm 913 is used to resist the handle housing 10.

[0063] Combine Figure 7 and Figure 9As shown, the first control member 9 continues to rotate in direction b until it abuts against the handle housing 10. The handle housing 10 prevents the first control member 9 from further rotating in direction b. The force generated by the elastic deformation of the elastic member 83 also prevents the first control member 9 from rotating in a direction opposite to direction b, thereby achieving a force balance and locking the first control member 9. In other embodiments, locking the first control member 9 can also be achieved by providing a separate locking member and connecting the locking member to the first control member 9 to lock the first control member 9.

[0064] Recombination Figure 9 In this embodiment, since no locking member other than the handle housing is separately designed to lock the first control member 9, the first control member 9 is mainly locked by the handle housing 10 and the first control member 9. In addition, when operating the first control member 9, it is necessary to rotate the first control member 9 from the initial state to the locked state. In this process, the end of the first connecting member 6 connected to the first control member 9 makes an arc motion on the first control member 9. Therefore, in this embodiment, when the first control member 9 is in the locked state, the end of the first connecting member 6 connected to the main body 92 of the first control member 9 needs to be located at the transition point 61b or at a position after the transition point 61b (for example, 61c) to ensure the locking performance. If the end of the first connecting member 6 connected to the main body 92 of the first control member 9 is located at a point Q before the transition point 61b without applying external force to the first control member 9, through the force analysis diagram, at point Q, the elastic member 83 that produces elastic deformation generates a force F on the main body 92 of the first control member 9 through the first connecting member 6. The force F has a component F1 in the circumferential direction and in the direction opposite to the direction b. The component F1 can drive the end of the first connecting member 6 connected to the main body 92 of the first control member 9 to move in the direction opposite to the direction b, which can easily make the end of the first connecting member 6 connected to the main body 92 of the first control member 9 return to the starting end 61a. Therefore, the force balance cannot be achieved at point Q, and the first control member 9 cannot reach the locked state.

[0065] The main body 92 has a central rotation point O, and the main body 92 rotates around the central rotation point O. When the end of the first connecting member 6 connected to the main body 92 of the first control member 9 is located at the transition point 61b, the first connection point 61b where the first connecting member 6 and the main body 92 are located, the second connection point 62b where the first connecting member 6 and the first slider 81 are located, and the central rotation point O are on the same straight line.

[0066] In other embodiments, when the first control member 9 reaches the locked position, the end of the first connecting member 6 connected to the main body 92 of the first control member 9 may also be exactly located at the transition point 61b, that is, the terminal end 61c coincides with the transition point 61b.

[0067] exist Figure 9 In one embodiment, the first connecting member 6 is in a straight line shape. Figure 10 , the first connecting member 6 as a whole can be in a broken line shape. In other embodiments, the first connecting member 6 as a whole can also be in a curved shape.

[0068] In one embodiment, the two ends of the first connecting member 6 are pivotally connected to the first control member 9 and the first slider 81 respectively, thereby having a more flexible connection method, which is conducive to the first connecting member 6 being connected to the first control member 9 and the first slider 81 at different angles, thereby facilitating the relative movement between the first control member 9, the first connecting member 6 and the first slider 81.

[0069] In one embodiment, again referring to Figure 7 and Figure 8b The second slider 82 is arranged in the first slider 81, and the fixing column 84 is arranged in the second slider 82. The proximal end of the second connecting member 7 first penetrates the first slider 81, then enters the second slider 82, passes through the fixing column 84, and then passes out of the second slider 82. By rotating the fixing column 84, the second connecting member 7 is wrapped around the fixing column 84, and finally the fixing column 84 is fixed with a screw 85, thereby fixing the second connecting member 7 to the second slider 82.

[0070] In one embodiment, the first direction a is the direction of movement from the first end to the second end. Figure 6 and Figure 7 In this embodiment, the first direction a is from the distal end to the proximal end, wherein the elastic member 83 is a compression-type elastic member, and the elastic member 83 is disposed on a side of the first slider 81 near the distal end. A compression-type elastic member (e.g., a compression spring) can be understood as compressing the elastic member, causing it to shorten and deform, and the elastic member has a tendency to recover from the deformation, thereby storing deformation energy. In another embodiment, the elastic member 83 is a tension-type elastic member, and the elastic member 83 is disposed on a side of the first slider 81 near the proximal end. A tension-type elastic member (e.g., a tension spring) can be understood as stretching the elastic member, causing it to elongate and deform, and the elastic member has a tendency to recover from the deformation, thereby storing deformation energy. It is understood that the first direction a can also be from the proximal end to the distal end.

[0071] The suturing device 100 includes a first control assembly (or suturing arm control assembly) 101 and a second control assembly (or needle seat control assembly) 102. Figure 6 and Figure 7 The first control assembly 101 includes the first connecting member 6, the second connecting member 7, the slider assembly 8 and the first control member 9. The first control assembly 101 is used to control the suture arm 4 to switch between the conveying state and the deployed state; see Figure 2 、 Figure 3 、 Figure 11 、 Figure 12a and Figure 12b The second control component 102 is connected to the suture needle 3 and is used to control the extension and retraction of the suture needle 3. When the suture needle 3 is extended, the distal end of the suture needle 3 can be connected to the suture arm 4.

[0072] The first control member 9 has an axially extending through-hole 93. When the first control member 9 is in a locked state, the second control member 102 penetrates the through-hole 93 and moves axially. When the first control member 9 is in an initial state, the second control member 102 is prevented from penetrating the through-hole 93, thereby restricting the axial movement of the second control member 102. This arrangement ensures that the suture needle 3 can be extended and connected to the suture arm 4 only when the suture arm 4 is in an expanded state. This ensures that the suture arm 4 must be expanded first before the suture needle 3 is extended, preventing the suture needle 3 from being extended before the suture arm 4 is expanded, thereby preventing the suture needle 3 from damaging tissue in the body.

[0073] In this embodiment, the first control component 9 is arranged on the distal side of the second control component 102, and the second control component 102 drives the suture needle 3 to extend distally, so that the distal end of the suture needle 3 passes through the through hole 93 and extends from the proximal end of the suture arm 4, further pulling at least one end of the suture thread 5 out from the suture arm 4.

[0074] In another embodiment, see Figure 13 The distal end of the suture needle 3 can be restrained by the sheath 2 in the delivery state. The second control assembly 102 drives the suture needle 3 to move proximally until it reaches the opening 12. The distal end of the suture needle 3 extends outward and assumes an outward-turned shape. The second control assembly 102 continues to drive the suture needle 3 proximally until the suture needle 3 is connected to the suture arm 4. The second control assembly 102 further drives the suture needle 3 proximally, and the distal end of the suture needle 3 is retracted in the direction C, thereby disengaging from the suture arm 4. At least one end of the suture thread 5 on the suture arm 4 is withdrawn until the distal end of the suture needle 3 reenters the sheath 2 and the outward-turned distal end of the suture needle 3 is straightened. It will be understood that in this embodiment, the first control member 9 is disposed on the proximal side of the second control assembly 102. Only when the first control member 9 is in the locked state can the proximal end of the second control assembly 102 penetrate the through hole 93 and perform axial movement.

[0075] See Figure 3 、 Figure 12a 、 Figure 12b and Figure 14The second control assembly 102 includes a first gear 1021, a first rack 1022, and a needle seat 103. The first gear 1021 and the first rack 1022 are meshed with each other. The needle seat 103 is connected to the suture needle 3 and the first rack 1022 respectively. The first gear 1021 is rotated to drive the needle seat 103 to move axially through the first rack 1022 to control the extension and retraction of the suture needle 3. When the suture needle 3 is extended, the distal end of the suture needle 3 is connected to the suture arm 4, thereby achieving precise control of the suture needle 3 and improving operability. Furthermore, the second control assembly 102 also includes a second operating part (or gear operating part) 1023. The second operating part 1023 is connected to the first gear 1021. Operating the second operating part 1023 drives the first gear 1021 to rotate.

[0076] In one embodiment, the first rack 1022 includes an engagement section 10221 and a connecting section 10222. The engagement section 10221 and the connecting section 10222 are axially connected, the engagement section 10221 cooperates with the first gear 1021, and the connecting section 10222 is connected to the proximal end of the suturing needle 3. The engagement section 10221 is a groove structure on the first rack 1022, and the first gear 1021 is restricted in movement within the groove structure.

[0077] In one embodiment, the first rack 1022 includes a penetration section 10223 and a meshing section 10221. The penetration section 10223 is axially connected to the meshing section 10221. The meshing section 10221 cooperates with the first gear 1021. The penetration section 10223 is used to penetrate Figure 12a and Figure 12b The through hole 93 of the first control member 9 is formed in the middle portion.

[0078] In another embodiment, the first rack 1022 may include an engaging segment 10221 , a connecting segment 10222 , and a penetrating segment 10223 , which are axially connected in sequence.

[0079] In one embodiment, combining Figure 2 、 Figure 3 、 Figure 13 and Figure 14The suture needle 3 includes a first suture needle 31 and a second suture needle 32, and the needle seat 103 includes a first needle seat 1031 and a second needle seat 1032. The first suture needle 31 is connected to the first needle seat 1031, and the second suture needle 32 is connected to the second needle seat 1032. The second control component 102 also includes a second gear 2021 and a second rack 2022 that cooperate with each other. By rotating the first gear 1021, the first needle seat 1031 is driven to move axially through the first rack 1022 to control the extension and retraction of the first suture needle 31; by rotating the second gear 2021, the second needle seat 1032 is driven to move axially through the second rack 2022 to control the extension and retraction of the second suture needle 32, so that the first suture needle 31 and the second suture needle 32 can be operated separately, which is more flexible and improves operability.

[0080] Combine Figure 3 and Figure 14 The first rack 1022 and the second rack 2022 are arranged side by side in the handle housing 10, and the first gear 1021 and the second gear 2021 are connected by a connecting rod 3021. The connecting rod 3021 passes through the first gear 1021 and the second gear 2021. The two ends of the connecting rod 3021 are fixed to the handle housing 10, and the first gear 1021 and the second gear 2021 rotate around the connecting rod 3021 respectively.

[0081] In one embodiment, see Figure 15a 、 Figure 15b and Figure 15c The suturing device 100 also includes an actuating assembly 304, a first support member 301 and a second support member 302. The first support member 301 is movably connected to the needle seat 103. The actuating assembly 304 is used to control the extension and retraction of the suture needle 3 into the sheath. When the suture needle 3 is extended, the distal end of the suture needle 3 is connected to the suture arm 4, and the needle seat 103 is connected to the suture needle 3. The actuating assembly 304 and the needle seat 103 are detachably connected in a direction perpendicular to the axial direction.

[0082] When the actuating assembly 304 and the needle hub 103 are connected, the first support member 301 is located outside the needle hub 103, and the second support member 302 is located outside the actuating assembly 304. The axial straight line M of the first support member 301 and the axial straight line N of the second support member 302 are arranged perpendicularly to the axial direction, and are used to support the actuating assembly 304 and the needle hub 103 in the perpendicular axial direction. The interconnected actuating assembly 304 and the needle hub 103 can move axially between the first support member 301 and the second support member 302. When the first support member 301 moves proximally, the first support member 301 drives the needle hub 103 to move proximally, and the needle hub 103 drives the actuating assembly 304 to move proximally until the actuating assembly 304 and the needle hub 103 are separated. After the separation, the first support member 301 can still drive the needle hub 103 to continue to move proximally.

[0083] In this embodiment, the actuating assembly 304 may include a first gear 1021 and a first rack 1022 that mesh with each other. In this case, the first rack 1022 and the needle seat 103 are detachably connected in a direction perpendicular to the axial direction. Figure 15a As shown, the first support member 301 is located outside the needle hub 103 (i.e., below the needle hub 103 as shown in the figure), and the second support member 302 is located outside the first rack 1022 (i.e., above the first rack 1022 as shown in the figure). The axial straight line M of the first support member 301 and the axial straight line N of the second support member 302 are arranged relative to each other in a perpendicular direction to support the first rack 1022 and the needle hub 103 in the perpendicular direction, so that the interconnected first rack 1022 and the needle hub 103 can move axially between the first support member 301 and the second support member 302. When the first support member 301 moves proximally, the first support member 301 drives the needle hub 103 proximally, and the needle hub 103 drives the first rack 1022 proximally until the first rack 1022 and the needle hub 103 are disengaged. After the two are disengaged, the first support member 301 can still drive the needle hub 103 to continue moving proximally.

[0084] In other embodiments, the actuating assembly 304 may not adopt the gear rack engagement method. The actuating assembly 304 may be a connecting structure. By pulling or pushing the connecting structure, the axial actuation function is realized to control the extension and retraction of the suture needle 3. The connecting structure may be a rod-shaped, block-shaped or other structure.

[0085] In this embodiment, first, this embodiment is provided with a first support member 301 and a second support member 302. When the actuating assembly 304 and the needle seat 103 are connected, the first support member 301 is located outside the needle seat 103, and the second support member 302 is located outside the actuating assembly 304. The straight line M in the axial direction where the first support member 301 is located and the straight line N in the axial direction where the second support member 302 is located are arranged relative to each other in a perpendicular direction to support the actuating assembly 304 and the needle seat 103 in a perpendicular direction. That is, the first support member 301 is located outside the needle seat 103. 01 is used to support the needle seat 103, and the second support member 302 is used to support the actuating assembly 304. The first support member 301, the needle seat 103, the actuating assembly 304 and the second support member 302 support each other on the same plane perpendicular to the axial direction, so that the four remain inseparable in the perpendicular axial direction, but do not affect the interconnected actuating assembly 304 and the needle seat 103. The actuating assembly 304 and the needle seat 103 can move axially between the first support member 301 and the second support member 302, thereby not affecting the axial movement of the actuating assembly to control the extension and retraction of the suture needle 3.

[0086] Secondly, the first support member 301 is movably connected to the needle seat 103, and the actuating assembly 304 and the needle seat 103 are detachably connected in a direction perpendicular to the axial direction. When the first support member 301 moves toward the proximal end, the first support member 301 drives the needle seat 103 to move proximally. At this time, the first support member 301, the needle seat 103, the actuating assembly 304 and the second support member 302 still support each other on the same plane perpendicular to the axial direction. Even if there is axial displacement between the four, the four remain inseparable in the direction perpendicular to the axial direction, and the needle seat 103 can drive the actuating assembly 304 to move proximally. Since the actuating assembly 304 controls the extension and retraction of the suture needle 3 through the needle seat 103, before the actuating assembly 304 and the needle seat 103 are separated, the needle seat 103 can first drive the actuating assembly 304 to move proximally, thereby reducing the interference of the actuating assembly 304 on other components of the suturing device 100 and improving the operational performance.

[0087] Again, by setting the needle seat 103 to be connected with the suture needle 3, the actuating assembly 304 and the needle seat 103 can be disengaged, so that not only the suture needle 3 with the suture thread 5 (that is, the suture needle 3 with the suture thread 5 that has completed the suturing action in the body) can be pulled out of the body, but also the part of the suture thread 5 connected to the suture needle 3 can be withdrawn from the body by pulling the suture needle 3 out of the body, making it convenient for the operator to send the knotter into the body along the part of the suture thread 5 pulled out of the body, or the part of the suture thread 5 pulled out of the body can be directly knotted and pushed into the body to complete the suture fixation.

[0088] The above-mentioned "can first drive the actuating assembly 304 to move toward the proximal end, can reduce the interference of the actuating assembly 304 on other components of the suturing device 100", is applied to specific embodiments, including but not limited to the following situations: Figure 12b When the first control member 9 is in the locked state, the first rack 1022 of the second control assembly 102 penetrates the through hole 93 and moves axially until the second control assembly 102 controls the suturing needle 3 to complete the suturing action. At this time, the first rack 1022 needs to be withdrawn from the through hole 93, that is, the first rack 1022 needs to be driven to move proximally so that the first control member 9 can return to its initial state, thereby restoring the suturing arm 4 to the conveying state, so that it can be easily withdrawn from the body. Therefore, the process of withdrawing the suturing needle can drive the actuating assembly 304 to move proximally, which can reduce the interference of the actuating assembly 304 with other components of the suturing device 100, which has practical significance.

[0089] In one embodiment, see Figure 16a 、 Figure 16b and Figure 16cThe suturing device 100 further includes a sleeve-like structure 401, which includes a first support member 301. The sleeve-like structure 401 is movably connected to the needle hub 103. The proximal end of the needle hub 103 is disposed within the sleeve-like structure 401, and the distal end of the needle hub 103 can extend out of or into the sleeve-like structure 401. The first support member 301 can be a side wall of the sleeve-like structure 401, or a component disposed on the side wall of the sleeve-like structure 401.

[0090] In an embodiment, one of the sleeve-like structure 401 and the needle seat 103 is provided with a through-hole structure 1030, and the other one is provided with a fixing structure 1033. The fixing structure 1033 is restricted in movement within the through-hole structure 1030, thereby achieving a movable connection between the sleeve-like structure 401 and the needle seat 103, that is, a movable connection between the first support member 301 and the needle seat 103. In one embodiment, the sleeve-like structure 401 is provided with an elongated through-hole structure 1030, and the needle seat 103 is provided with a fixing structure 1033. The fixing structure 1033 is a hook-like structure 10331. The hook-like structure 10331 can abut against the inner wall 10301 of the through-hole structure 1030, so that the hook-like structure 10331 is restricted in axial movement within the elongated through-hole structure 1030. In another embodiment, see Figure 17a and Figure 17b The sleeve structure 401 is provided with a fixing structure 1033, which is a rod-shaped structure 10332. The needle hub 103 is provided with an elongated through-hole structure 1030. The rod-shaped structure 10332 is inserted into the elongated through-hole structure 1030 and can abut against the inner wall 10301 of the through-hole structure 1030, so that the rod-shaped structure 10332 is constrained within the elongated through-hole structure 1030 for axial movement. If multiple needle hubs 103 are provided, multiple fixing structures 1033 can be provided, each constrained in a different through-hole structure 1030, to achieve independent movement of the multiple needle hubs 103.

[0091] In other embodiments, the first support member 301 may not be provided on the sleeve-shaped structure 401 , and the first support member 301 may be a planar structure, such as a flat plate, rod, bar, or block of various shapes, etc. A connector is provided on the planar structure to be movably connected to the needle seat 103 .

[0092] See Figure 3 The handle includes a detachably connected handle shell 10 and a sleeve-shaped structure shell 13. Figure 16a and Figure 17aThe sleeve-like structure housing 13 is connected to the sleeve-like structure 401 and is disposed outside the sleeve-like structure 401. A connector 131 is disposed on the sleeve-like structure housing 13, which is inserted into the handle housing 10 to securely connect the handle housing 10 and the sleeve-like structure housing 13. A slit 132 is disposed in the sleeve-like structure housing 13 at the location where the connector 131 is disposed. The slit 132 enables the location where the connector 131 is disposed to move relative to other locations in the sleeve-like structure housing 13. When the handle housing 10 and the sleeve-like structure housing 13 need to be fixed together, the position where the connecting piece 131 is provided in the sleeve-like structure housing 13 is pressed inward perpendicularly to the axial direction, so that the connecting piece 131 can be easily inserted into the handle housing 10. After the connecting piece 131 is inserted into the handle housing 10, the connecting piece 131 can be restored to its original shape outward perpendicularly to the axial direction, so that it can be mutually engaged with the handle housing 10 in the perpendicular axial direction to achieve the fixation between the handle housing 10 and the sleeve-like structure housing 13. When the sleeve-like structure housing 13 needs to be released from the handle housing 10, the position where the connecting piece 131 is provided in the sleeve-like structure housing 13 is pressed inward perpendicularly to the axial direction, so that the connecting piece 131 can be easily released from the handle housing 10, and then the sleeve-like structure housing 13 is pulled out to achieve release.

[0093] In one embodiment, see Figure 18 At least one of the handle housing 10, the sleeve-like structure housing 13, or the sleeve-like structure 401 is provided with a release-assisting member 2201. When the sleeve-like structure housing 13 and the handle housing 10 begin to release, the release-assisting member 2201 is used to move the handle housing 10 away from the sleeve-like structure housing 13 until the handle housing 10 and the sleeve-like structure housing 13 are completely released. The sleeve-like structure housing 13, through the sleeve-like structure 401, drives the needle seat 103 to disengage from the actuating assembly 304, allowing the suture needle 3 to be withdrawn from the handle 1. In this embodiment, the handle 1 includes the actuating assembly 304, the needle seat 103, the sleeve-like structure 401, the handle housing 10, and the sleeve-like structure housing 13.

[0094] In this embodiment, a release aid 2201 is provided. When the sleeve-like structure housing 13 and the handle housing 10 begin to release, the release aid 2201 is used to move the handle housing 10 away from the sleeve-like structure housing 13 until the handle housing 10 and the sleeve-like structure housing 13 are completely released. The sleeve-like structure housing 13 drives the needle seat 103 to disengage from the actuating assembly 304 through the sleeve-like structure 401, so that the suture needle 3 is withdrawn from the handle. Such arrangement, on the one hand, makes it convenient for the suture needle 3 in the suturing device 100 to move the suture needle 3 with the suture thread 5 to the proximal end immediately after completing suturing until it is withdrawn from the handle 1, so as to capture the free end of the suture thread 5 for the subsequent locking operation. At the same time, it can avoid performing other subsequent operations of the suturing device 100 before the suture needle 3 with the suture thread 5 is withdrawn from the handle, which will cause pulling and tearing of the sutured tissue by the subsequent other operations of the suturing device 100. On the other hand, due to the arrangement of the release aid 2201, the sleeve-like structure shell 13 and the handle shell 10 can be released more conveniently and smoothly, so that the suture needle 3 has less resistance to withdrawing from the handle 1, which can further greatly reduce or avoid pulling and tearing of the tissue, thereby causing suturing failure.

[0095] Further, see Figure 18 、 Figure 19 、 Figure 20a 、 Figure 20b and Figure 20c The release aid 2201 includes a movable connecting member 2201a disposed on the sleeve-like structure 401 or the sleeve-like structure housing 13. The movable connecting member 2201a includes a connecting portion 22011, a pushing portion 22012, and a rotating portion 22013. The rotating portion 22013 is disposed between the connecting portion 22011 and the pushing portion 22012. The rotating portion 22013 is rotatably connected to the sleeve-like structure 401 or the sleeve-like structure housing 13. The connecting portion 22011 is detachably connected to the handle housing 10. When the sleeve-like structure housing 13 is separated from the handle housing 10, the connecting portion 22011 is pushed proximally to separate from the handle housing 10. The rotating portion 22013 rotates relative to the sleeve-like structure 401 or the sleeve-like structure housing 13, driving the pushing portion 22012 to push the handle housing 10 distally.

[0096] exist Figure 18 and Figure 19In the embodiment, the distal end of the sleeve-like structure 401 extends beyond the distal end of the sleeve-like structure housing 13, the movable connecting member 2201a is sleeved on the sleeve-like structure 401, and in the axial direction, the movable connecting member 2201a is disposed between the sleeve-like structure housing 13 and the handle housing 10. When the connecting portion 22011 and the handle housing 10 are fixedly connected to each other, the pushing portion 22012 abuts against the sleeve-like structure housing 13, thereby achieving fixation of the movable connecting member 2201a, the sleeve-like structure housing 13, and the handle housing 10. In other embodiments, the movable connecting member 2201a is sleeved on the sleeve-like structure housing 13, and the sleeve-like structure housing 13 is further provided with a supporting member (not shown). When the connecting portion 22011 and the handle housing 10 are fixedly connected to each other, the pushing portion 22012 abuts against the supporting member.

[0097] In one embodiment, the connecting portion 22011 includes a hook-shaped structure 22011a facing the handle housing 10. The handle housing is provided with a protrusion structure or a groove structure 10a on its exterior. The hook-shaped structure 22011a cooperates with the protrusion structure or the groove structure 10a to secure the handle. In other embodiments, the connecting portion 22011 and the handle housing 10 can be connected by various connection methods, such as a threaded connection, a snap-fit ​​connection, an interference fit connection, or a third connection method, as long as both connection and release functions can be achieved.

[0098] In one embodiment, the movable connecting member 2201a is an overall plate-like structure having an opening 2201M. The inner wall of the opening 2201M is provided with a rotating portion 22013. The movable connecting member 2201a is sleeved onto the sleeve-like structure 401 or the sleeve-like structure housing 13 through the opening 2201M. The rotating structure 22013 is rotatably connected to the sleeve-like structure 401 or the sleeve-like structure housing 13. In other embodiments, the movable connecting member 2201a may also be formed by connecting multiple rod-like structures.

[0099] In another embodiment, see Figure 21 、 Figure 22a 、 Figure 22b and Figure 22cThe release aid 2201 includes a sloped structure 2201b arranged in the handle shell 10, and the sloped structure 2201b is inclined from the radial outward toward the distal direction. A connecting piece 131 is provided on the sleeve-shaped structure shell 13, and a matching piece 10b is provided on the inner wall of the handle shell 10. The connecting piece 131 is inserted into the handle shell 10 from the proximal end to the distal end and is connected and fixed with the matching piece 10b. The connecting piece 131 has a free end 1310. When the connecting piece 131 is radially disengaged from the matching piece 10b, the free end 1310 of the connecting piece is against the sloped structure 2201b and can move from the distal end to the proximal end along the sloped structure 2201b. In this embodiment, the inclined surface structure 2201b is similar to a guiding structure. After the connecting member 131 is separated from the mating member 10b in the radial direction, the free end 1310 of the connecting member abuts against the inclined surface structure 2201b. The inclined surface structure 2201b can guide the free end 1310 of the connecting member to move along the surface of the inclined surface structure 2201b. As the sleeve-shaped structure shell 13 is pulled toward the proximal direction, the connecting member 131 is driven to move from the distal end to the proximal end, making the operation more convenient and labor-saving.

[0100] In order to further improve operability and save more effort, a slit 132 is provided in the sleeve-shaped structural shell 13 at the position where the connecting piece 131 is provided. The above embodiment has been described and will not be repeated here.

[0101] In this embodiment, the connecting member 131 includes a radially outward hook-shaped structure 1311, and the mating member 10b includes a protrusion structure or a groove structure. The hook-shaped structure 1311 and the protrusion structure or the groove structure cooperate with each other to secure. In other embodiments, the hook-shaped structure 1311 and the handle housing 10 can be connected by various connection methods, such as a threaded connection, a snap-fit ​​connection, an interference fit connection, or a separate third connection method, as long as both the connection and release functions can be achieved.

[0102] See Figure 15a 、 Figure 15b and Figure 15c In one embodiment, the second support member 302 is provided on the inner wall of the handle housing 10. A first groove 3041 is provided on the actuating assembly 304, and the second support member 302 can be accommodated in the first groove 3041. When the first support member 301 moves toward the proximal end, the first support member 301 drives the needle seat 103 to move toward the proximal end, and the needle seat 103 drives the actuating assembly 304 to move toward the proximal end until the second support member 302 is accommodated in the first groove 3041, so that the actuating assembly 304 and the needle seat 103 are disengaged. Specifically, as Figure 15aAs shown, at this time, the sleeve-shaped structure housing 13 and the handle housing 10 have not been released, the second support member 302 is not accommodated in the first groove 3041, and the first support member 301, the needle seat 103, the actuating assembly 304 and the second support member 302 support each other on the same plane perpendicular to the axial direction. The interconnected actuating assembly 304 and the needle seat 103 can move axially between the first support member 301 and the second support member 302. Figure 15b As shown, at this time, the sleeve-like structure housing 13 is pulled proximally, and the sleeve-like structure housing 13 is released from the handle housing 10, but the second support member 302 is not accommodated in the first groove 3041. The first support member 301, the needle seat 103, the actuating assembly 304 and the second support member 302 are still supporting each other on the same plane perpendicular to the axial direction. At this time, the actuating assembly 304 has been completely removed from the sleeve-like structure 401, and the needle seat 103 is still stationary relative to the housing 13. Figure 15c As shown, as the sleeve-shaped structure housing 13 is continuously pulled toward the proximal end, the sleeve-shaped structure 401 drives the needle seat 103 to move toward the proximal end, and the needle seat 103 drives the actuating assembly 304 to move toward the proximal end until the second support member 302 is accommodated in the first groove 3041. The force balance of the first support member 301, the needle seat 103, the actuating assembly 304 and the second support member 302 on the same plane perpendicular to the axial direction is gradually broken, especially the force provided by the second support member 302 on the part connected to the needle seat 103 The force of the actuating assembly 304 perpendicular to the axial direction and toward the actuating assembly 304 exerted by the needle seat 103 does not change significantly, so that the actuating assembly 304 takes the second support member 302 as a fulcrum, and the actuating assembly 304 tilts in the direction perpendicular to the axial direction (that is, the d direction) at the contact position between the needle seat 103 and the actuating assembly 304. Since the actuating assembly 304 has been completely removed from the sleeve-like structure 401, the actuating assembly 304 and the needle seat 103 can be disengaged very smoothly.

[0103] Furthermore, one of the actuating assembly 304 and the needle hub 103 is provided with a raised portion 22, and the other of the actuating assembly 304 and the needle hub 103 is provided with a recessed portion 33. The raised portion 22 and the recessed portion 33 cooperate with each other to allow the actuating assembly 304 and the needle hub 103 to be detachably connected in a direction perpendicular to the axial direction, thereby ensuring that an effective connection is achieved when one of the actuating assembly 304 and the needle hub 103 drives the other to move. In other embodiments, the raised portion 22 and the recessed portion 33 may not be provided, and the connection between the actuating assembly 304 and the needle hub 103 may be ensured solely by friction between the actuating assembly 304 and the needle hub 103. It is understood that a rough surface may be provided on the contact surface of the actuating assembly 304 or / and the needle hub 103.

[0104] In another embodiment, the sleeve structure 401 further includes a second support member 302, that is, the second support member 302 is also disposed on the sleeve structure 401. In this case, the contact point between the needle hub 103 and the actuating assembly 304 needs to be located within the sleeve structure 401. After the sleeve structure 401 is released, the needle hub 103 and the actuating assembly 304 can be released. Specifically, the sleeve structure 401 is pulled proximally, driving the needle hub 103 to move proximally, thereby causing the actuating assembly 304 to move proximally for a period of time until the actuating assembly 304 cannot move proximally any further. At this point, a retaining member 3040 can be provided to abut against the actuating assembly 304. For example, the retaining member 3040 within the handle housing 10 axially abuts against the protruding portion 10220 of the first rack 1022, thereby preventing the actuating assembly 304 from moving excessively proximally. The actuating assembly 304 then releases from the sleeve structure 401, thereby disengaging the needle hub 103 and the actuating assembly 304. In this embodiment, the above-mentioned protrusion 22 and recess 33 can also be provided. At this time, the protrusion 22 or the recess 33 can be an elastic structure. When the sleeve-like structure shell 13 is pulled proximally, the sleeve-like structure 401 drives the needle seat 103 to move proximally, and the needle seat 103 drives the actuating assembly 304 to move proximally. The sleeve-like structure shell 13 is continued to be pulled proximally until the connection position of the needle seat 103 and the actuating assembly 304 is separated from the sleeve-like structure 401. Since the protrusion 22 and the recess 33 are provided, the needle seat 103 and the actuating assembly 304 are still connected at this time. Since the protrusion 22 or the recess 33 is an elastic structure, the sleeve-like structure shell 13 is further pulled proximally. The protrusion 22 and / or the recess 33 are pulled axially, and the protrusion 22 can be easily separated from the recess 33, thereby realizing the separation between the needle seat 103 and the actuating assembly 304. In other embodiments, the raised portion 22 and the recessed portion 33 may not be provided, and the connection between the actuating assembly 304 and the needle seat 103 may be ensured only by the friction between the actuating assembly 304 and the needle seat 103. It is understandable that a rough surface may be provided on the surface in contact with the actuating assembly 304 and / or the needle seat 103.

[0105] In one embodiment, see Figure 23a 、 Figure 23b and Figure 23cThe suturing device 100 also includes a thread cutter 200, which is mounted on the suturing device 100. The thread cutter 200 includes a gripping portion 201 and a cutting portion 202, which are interconnected. The suture 5 passes through the cutting portion 202. The gripping portion 201 is pulled to bring the suture 5 into contact with the cutting portion 202, thereby shearing the suture 5. In this embodiment, the thread cutter 200 is mounted within the handle 1, with the gripping portion 201 disposed within the handle housing 10 and the cutting portion 202 disposed outside the handle housing 10. When the suture needle 3 is used to withdraw the suture 5, any remaining suture 5 outside the body can be shortened to prevent it from extending too long. The cutting portion 202 is provided with a strip-shaped hole 2020, the inner wall of which is provided with a blade 2023.

[0106] In one embodiment, combining Figure 3 、 Figure 24a 、 Figure 24b and Figure 24c The suturing device 100 also includes a wire drum 300, on which the suture thread 5 is wound. The wire drum 300 is rotated to release the suture thread 5. The first control member 9 controls the fixing or loosening of the wire drum 300. The wire drum 300 has a fixed state and a loose state. The first control member 9 has an initial state and a locked state.

[0107] See Figure 24a When the first control member 9 is in the initial state, the wire drum 300 is in a fixed state; see Figure 24b When the first control member 9 is in the locked state, the spool 300 is in the unwound state. The suture 5 is wound around the spool 300, with a portion of the suture 5 wound around the spool 300 and the remaining portion extending along the sheath 2 toward the suture arm 4, such that at least one end of the suture 5 is connected to the suture arm 4. In one embodiment, after the suture 5 is folded in half, both ends of the suture are connected to the suture arm 4, with the folded portion of the suture 5 located on the spool 300. In another embodiment, one end of the suture 5 is connected to the suture arm 4, while the other end of the suture 5 is located on the spool 300.

[0108] In one embodiment, see again Figure 24cThe wire drum 300 includes an upper bead 300a, a lower bead 300b, a wire winding portion 300c and a separator 300d. The wire winding portion 300c is located between the upper bead 300a and the lower bead 300b. The upper bead 300a and the lower bead 300b are used to limit the position where the suture 5 is wound. The lower bead 300b can also be used to cooperate with the first control member 9 to achieve the fixing or loosening of the wire drum 300 as described in the above embodiment. The lower bead 300b is also provided with a damping structure. For example, the outer surface of the lower bead 300b is set to a polyhedral surface 300b1 to increase the tightness of the cooperation between the lower bead 300b and the first control member 9. In addition, the separator 300d can be used to separate the wire winding portion 300c from the lower bead 300b to prevent the lower bead 300b from affecting the release of the suture 5 on the wire winding portion 300c when cooperating with the first control member 9. In another embodiment, refer to Figure 26 , the separator 300d may not be provided.

[0109] See Figure 24c The reel 300 is also provided with a hooking member 3001, wherein the hooking member 3001 can be provided at any position or multiple positions on the upper bead 300a, the lower bead 300b, the winding portion 300c and the separator 300d. When the suture 5 is folded in half, both ends of the suture 5 are connected to the suture arm 4, and the folded position 501 of the suture 5 is located on the reel 300. At this time, in order to facilitate the winding of the folded suture 5 onto the reel 300, the folded position 501 of the suture 5 is first hooked on the hooking member 3001, and then the folded position 501 of the suture 5 hooked on the hooking member 3001 is used as the starting point, and the folded suture 5 is wound around the reel 300 to complete the winding of the suture 5. Then, the other part of the suture 5 is passed through the threading hole 502 on the handle housing 10 (see FIG. 1 ). Figure 25 ), and then extends along the sheath tube 2 to the suturing arm 4 and is connected to the suturing arm 4. In this embodiment, the thread hooking member 3001 is a small bump 3001a. Specifically, a small bump 3001a is cut out of the upper bead 300a. The small bump 3001a is spaced apart from other parts of the upper bead 300a. In other embodiments, the thread hooking member 3001 can be a hook-like structure, a rod-like structure, etc. on the spool 300 or installed separately on the spool 300, as long as it can hook the folded position 501 of the suture thread 5.

[0110] In this embodiment, the first control member 9 can also be used to control the transition between the conveying state and the deployed state of the suturing arm 4. For the specific control process, please refer to the aforementioned embodiment. When the first control member 9 is in the initial state, the suturing arm 4 is in the conveying state and the wire drum 300 is in the fixed state; when the first control member 9 is in the locked state, the suturing arm 4 is in the deployed state and the wire drum 300 is in the relaxed state. In other embodiments, the first control member 9 can be used only to control the fixation and relaxation of the wire drum 300, and the suturing arm 4 can be controlled by another component, or the suturing arm 4 can be covered with a protective structure on the outside, and the suturing arm 4 is always in the deployed state. There is no need to control the state of the suturing arm 4, and the protective structure can be removed when the target position is reached.

[0111] In this embodiment, a first control member 9 having an initial state and a locked state is provided to control the transition between the fixed state and the relaxed state of the spool 300, thereby preventing the spool 300 from being in the relaxed state all the time and releasing too much suture thread 5. Excessive suture thread 5 is prone to accumulation and knotting, and is likely to interfere with other operations of the suturing device 100. The spool 300 can be relaxed when needed, which enhances operability and controllability.

[0112] In one embodiment, see Figure 24a and Figure 24b The first control member 9 includes a main body 92, which includes a first main body 921 and a second main body 922. The first main body 921 and the second main body 922 are arranged opposite each other, and the cable drum 300 is disposed between the first main body 921 and the second main body 922. The first main body 921 has a first main body inner wall 9210 on the side proximate to the cable drum 300, and the second main body 922 has a second main body inner wall 9220 on the side proximate to the cable drum 300. The cable drum 300 is disposed between the first main body 921 and the second main body 922 at a first position P. At the first position P, when the first control member 9 is in the initial state, the distance between the first main body inner wall 9210 and the second main body inner wall 9220 is smaller than the distance between the first main body inner wall 9210 and the second main body inner wall 9220 when the first control member 9 is in the locked state, thereby achieving the fixing and loosening of the cable drum 300 in the radial direction of the cable drum 300. When the distance between the inner wall 9210 of the first main body and the inner wall 9220 of the second main body is small, it can be used to clamp the wire drum 300, and the wire drum 300 remains in a fixed state; when the distance between the inner wall 9210 of the first main body and the inner wall 9220 of the second main body is large, it can be used to loosen the wire drum 300, and the wire drum 300 remains in a relaxed state.

[0113] In this embodiment, recesses 9211 are provided in portions of the first main body inner wall 9210, thereby increasing the distance between the first main body inner wall 9210 and the second main body inner wall 9220. When the first control member 9 is in its initial state, at the first position P, the portion of the first main body inner wall 9210 not provided with the recesses 9211 abuts against the cable drum 300. When the first control member 9 is in its locked state, at the first position P, the portion of the first main body inner wall 9210 provided with the recesses 9211 abuts against the cable drum 300. In other embodiments, the second main body inner wall 9220 may also be provided with recesses, or only the second main body inner wall 9220 may be provided with recesses. In other embodiments, the overall thickness of the first main body 921 / the second main body 922 is uniform, and no recess is provided. It is sufficient that when the first control member 9 is in the initial state at the first position P, the distance between the first main body 921 and the second main body 922 is reduced, and when the first control member 9 is in the locked state, the distance between the first main body 921 and the second main body 922 is increased.

[0114] In this embodiment, operating the first operating portion 91 causes the interconnected first and second main members 921, 922 to rotate. In other embodiments, by providing a different operating portion, one of the first and second main members 921, 922 can be rotated, thereby fixing or releasing the cable drum 300 by changing the distance between the side walls of the two main members. In other embodiments, the operating portion may not be provided, and the first and / or second main members 921, 922 can be rotated directly.

[0115] Combine Figure 3 、 Figure 24a 、 Figure 24b 、 Figure 24c and Figure 25 In one embodiment, the cable drum 300 can be arranged outside the handle housing 10, and the main body 92 is arranged inside the handle housing 10. At the first position P, the handle housing 10 is provided with an opening 1011, and the inner wall 9210 of the first main body can be abutted against the cable drum 300 through the opening 1011. It can be understood that at the first position P, the handle housing 10 can also be provided with another opening 1011, and the inner wall 9220 of the second main body can be abutted against the cable drum 300 through the opening 1011. Figure 26 and Figure 28a In one embodiment, the suturing device 100 further includes a fixed cover 330, which covers the outside of the spool 300. Figure 27a 、 Figure 28a and Figure 28b When the first control member 9 is in the initial state, the first control member 9 presses against one end of the wire drum 300, and the other end of the wire drum 300 is fixed to the fixed cover 330; see Figure 27b 、 Figure 28cand Figure 28d When the first control member 9 is in the locked state, the other end of the cable drum 300 is disengaged from the fixed cover 330. This arrangement allows the cable drum 300 to be fixed and released in the height direction of the cable drum 300. In this embodiment, the fixed cover 330 is fixedly connected to the handle housing 10, so that the fixed cover 330 remains fixed.

[0116] In this embodiment, the first control member 9 includes an ejector 910 having an ejection portion 910a at one end. The first control member 9 is rotatable. When the first control member 9 is in an initial state, the ejection portion 910a is positioned close to one end of the cable drum 300 and presses against the cable drum 300, thereby securing the cable drum 300. When the first control member 9 is rotated to a locked state, the ejection portion 910a moves away from one end of the cable drum 300, thereby releasing the cable drum 300.

[0117] Furthermore, the suturing device 100 further includes an elastic member 311, the two ends of which are respectively connected to the fixed cover 330 and the thread drum 300. When the first control member 9 is in the initial state, the ejection portion 910a is close to one end of the thread drum 300 and presses against the thread drum 300, thereby fixing the thread drum 300. At this time, the elastic member 311 is compressed, storing elastic potential energy; when the first control member 9 is rotated to the locked state, the ejection portion 910a is away from one end of the thread drum 300, and the compressed elastic member 311 releases elastic potential energy, which acts on the thread drum 300, accelerating the separation of the thread drum 300 from the fixed cover 330, thereby accelerating the release of the thread drum 300.

[0118] Furthermore, a first fixing portion 111 is provided at the other end of the cable drum 300, and a second fixing portion 112 is provided at the fixing cover body 330. One of the first fixing portion 111 and the second fixing portion 112 is a groove, and the other is a protrusion, which is connected to the groove, thereby improving the fixing performance of the cable drum 300 and the fixing cover body 330.

[0119] In one embodiment, the aforementioned method can be used to simultaneously secure and release the cable drum 300 in both the radial direction and the height direction of the cable drum 300. Specifically, this can be achieved, but is not limited to, by disposing the ejector 910 on the main body 92. In other embodiments, either the radial direction or the height direction of the cable drum 300 can be used to secure and release the cable drum 300.

[0120] See again Figure 26 The wire drum 300 is at least partially disposed outside the handle housing 10 , and a first column 312 is provided on the handle housing 10 . The wire drum 300 is inserted into the first column 312 , and the wire drum 300 rotates around the first column 312 to release the suture 5 .

[0121] Combine Figure 26 and Figure 29 The cable drum 300 has an opening 313 at one end near the handle housing 10, and a first damping structure 314 is provided on the inner wall of the cable drum 300. Specifically, the first damping structure 314 is provided on the inner wall surrounding the opening 313, and the handle housing 10 has a second damping structure 315 that cooperates with the first damping structure 314. As the cable drum 300 rotates, the first damping structure 314 moves relative to the second damping structure 315, slowing down the rotation of the cable drum 300. In other embodiments, the outer wall of the cable drum 300 at one end near the handle housing 10 has a first damping structure 314, and the handle housing 10 has a second damping structure 315 that cooperates with the first damping structure 314.

[0122] During operation, when the distal end of the suturing needle 3 is connected to the suturing arm 4, at least one end of the suture thread 5 on the suturing arm 4 is withdrawn, and then the suturing needle 3 is displaced, the suture thread 5 is displaced, and the suture thread 5 drives the spool 300 to rotate, thereby releasing the suture thread 5 wound on the spool 300. Due to the inertia of the rotation of the spool 300, the spool 300 is likely to rotate too fast, resulting in excessive release of the suture thread 5 wound on the spool. Excessive release of the suture thread is likely to accumulate and knot, and is likely to interfere with other operations of the suturing device 100. Therefore, it is necessary to slow down the rotation speed of the spool 300 so that a reasonable amount of suture thread 5 can be released.

[0123] See Figure 30a 、 Figure 31a 、 Figure 31b and Figure 32 In one embodiment, the handle 1 also includes a supporting structure 122, which is fixedly connected to the sheath 2. The supporting structure 122 includes a first part 1221, which is against the handle housing 10. The first part 1221 is provided with a first matching structure 1222, and the handle housing 10 is provided with a second matching structure 1223. One of the first matching structure 1222 and the second matching structure 1223 is at least one protrusion structure 1221a, and the other of the first matching structure 1222 and the second matching structure 1223 is a plurality of recessed structures 1221b. The plurality of recessed structures 1221b are arranged along the circumferential direction. When the supporting structure 122 is rotated, the supporting structure 122 moves circumferentially relative to the handle housing 10, so that a protrusion structure 1221a moves in sequence in the plurality of recessed structures 1221b.

[0124] See Figure 32In this embodiment, a supporting structure 122 is provided, which is connected to the sheath tube 2. By rotating the supporting structure 122, the supporting structure 122 moves circumferentially relative to the handle shell 10. After the sheath tube is delivered into the body, the circumferential relative position of the supporting structure 122 and the handle shell 10 is adjusted to realize the rotation of the sheath tube 2 and adjust the circumferential position of the sheath tube 2, so as to adapt to the environment in the body more flexibly. At the same time, the other parts of the handle 1 can be kept stationary, which facilitates the operation of other parts of the handle 1. In addition, by respectively arranging the first matching structure 1222 and the second matching structure 1223 on the first part 1221 of the receiving structure 122 and the handle housing 10, one of the first matching structure 1222 and the second matching structure 1223 is at least one protrusion structure 1221a, and the other of the first matching structure 1222 and the second matching structure 1223 is a plurality of recessed structures 1221b, and the plurality of recessed structures 1221b are arranged circumferentially. The receiving structure 122 is rotated, and the receiving structure 122 moves circumferentially relative to the handle housing 10, so that a protrusion structure 1221a moves in sequence in the plurality of recessed structures 1221b, thereby achieving quantitative control of the circumferential rotation angle of the receiving structure 122 during the rotation process, so as to more accurately control the circumferential rotation angle of the sheath tube 2, improve the accuracy of the surgical operation process, and improve the success rate of the surgery. In this embodiment, the distal end of the sheath tube 2 has a curved portion, or does not have a curved portion. Figure 32 In the embodiment, the first matching structure 1222 is a concave structure 1221b, and the second matching structure 1223 is a convex structure 1221a; Figure 33 In another embodiment, the first matching structure 1222 is a convex structure 1221a, and it can be understood that the second matching structure 1223 is a concave structure 1221b.

[0125] In one embodiment, the recessed structure 1221b includes a first recessed portion 1221b1 and a second recessed portion 1221b2 connected to each other. The protruding block structure 1221a moves from the first recessed portion 1221b1 to the second recessed portion 1221b2 or vice versa, driving the sheath 2 to rotate clockwise or counterclockwise relative to the handle housing 10 by a first angle e. In this embodiment, the clockwise or counterclockwise rotation allows for more precise adjustment of the rotation angle of the sheath 2, facilitating reversible adjustment or correction to an appropriate angle during surgery if the sheath 2 rotates too far in one direction.

[0126] In one embodiment, the receiving structure 122 further includes a second portion 1224, which is fixedly connected to the sheath tube 2. The first portion 1221 is disposed on the outer surface of the second portion 1224, thereby facilitating the connection between the receiving structure 122 and the sheath tube 2 and not affecting the mating between the receiving structure 122 and the handle housing 10. Specifically, the second portion 1224 is at least partially disposed within the handle housing 10, the proximal end of the first portion 1221 abuts against the distal end of the handle housing 10, the proximal end of the first portion 1221 is provided with a first mating structure 1222, and the distal end of the handle housing 10 is provided with a second mating structure 1223. In other embodiments, the receiving structure 122 may not include the second portion 1224 and may include only the first portion 1221, wherein one end of the first portion 1221 may be connected to the sheath tube 2 and the other end of the first portion 1221 is mated with the handle housing 10.

[0127] See Figure 30a and Figure 30b In one embodiment, the handle 1 further includes a knob 123, which is sleeved and fixed on the receiving structure 122, so that the receiving structure 122 can be rotated by the knob 123. In other embodiments, the knob 123 may not be included, and the receiving structure 122 may be rotated directly.

[0128] The knob 123 is provided with a knob stopper 1231, and the handle housing 10 is provided with a housing stopper 1232. The knob 123 is sleeved on the receiving structure 122. When the knob 123 is rotated in the first direction Q, the knob stopper 1231 and the housing stopper 1232 circumferentially stop each other, preventing the knob 123 from further rotating in the first direction Q. The first direction Q can be clockwise or counterclockwise.

[0129] The knob stopper 1231 includes a first knob stopper 1231a and a second knob stopper 1231b, between which the housing stopper 1232 moves. Alternatively, the housing stopper 1232 includes a first housing stopper 1232a and a second housing stopper (not shown), between which the knob stopper 1231 moves. This arrangement allows the circumferential rotation between the knob stopper 1231 and the housing stopper 1232 to be controlled within a certain range within the entire circumference, preventing the knob stopper 1231 from rotating a full circle relative to the housing stopper 1232. In other words, the knob 123 rotates within a certain range relative to the handle housing 10, thereby controlling the circumferential rotation angle of the sheath tube 2.

[0130] In another embodiment, the knob 123 has an initial state. The knob 123 is provided with a first positioning member 1233, and the receiving structure 122 is provided with a second positioning member 1234. When the knob 123 and the receiving structure 122 are connected to each other, the first positioning member 1233 and the second positioning member 1234 are connected and fixed to each other, so that the knob 123 is in the initial state when it is mated with the handle housing 10. During installation, the receiving structure 122 can be connected to the handle housing 10, and then the knob 123 is connected to the receiving structure 122 through the mating of the first positioning member 1233 and the second positioning member 1234. Therefore, by controlling the initial connection position of the knob 123 and the receiving structure 122, the initial connection position of the knob stopper and the handle housing 10 can be controlled, thereby controlling the circumferential distance between the knob stopper 1231 and the housing stopper 1232, thereby controlling the angular range of the knob 123 rotation, and further precisely controlling the angular range of the circumferential rotation of the sheath tube 2. In other embodiments, the first knob stop 1231a, the second knob stop 1231b, the first positioning member 1233 and the second positioning member 1234 can be set at the same time, or the first shell stop 1232a, the second shell stop (not shown), the first positioning member 1233 and the second positioning member 1234 can be set at the same time, so as to more accurately control the angular range of the circumferential rotation of the sheath tube 2.

[0131] In another embodiment, it can be understood that the stopper can also be provided on the supporting structure 122. Specifically, it can be understood that the supporting structure 122 can be provided with a supporting structure stopper, and the handle housing 10 can be provided with a housing stopper 1232. When the knob 123 is rotated in the first direction, the supporting structure stopper and the housing stopper 1232 stop each other circumferentially to prevent the supporting structure from continuing to rotate in the first direction.

[0132] See Figure 32 In order to better fix the receiving structure 122 and the handle housing 10 together, fixing elements 1225 and 1226 are respectively provided on the receiving structure 122 and the handle housing 10. The fixing element 1225 of the receiving structure 122 is a groove structure, and the fixing element 1226 of the handle housing 10 is a bump structure, and the groove structure and the bump structure are connected with each other. Figure 33 In one embodiment, the fixing element 1225 of the receiving structure 122 is a protrusion structure, and the fixing element 1226 of the handle housing 10 is a groove structure, and the groove structure and the protrusion structure are connected to each other in a cooperative manner.

[0133] In this embodiment, in the embodiment with the receiving structure 122, the receiving structure 122 can be applied to the suturing device 100. It can be understood that it can also be applied to any conveying device.

[0134] Take the suturing device 100 of this embodiment for suturing a patent foramen ovale as an example, wherein the number of the suturing needles 3 is two, namely the first suturing needle 31 and the second suturing needle 32. Figure 34a The two ends 5a and 5b of the suture 5 are respectively located on both sides of the suture arm 4, and the middle part 5c of the suture 5 extends along the sheath 2 toward the proximal end until it can be wound on the spool 300. The general operation process can be: the suture device 100 is delivered to the target position along the guide wire, the distal end of the suture device 100 passes through the oval foramen, and then the suture arm 4 is unfolded, and the two sides of the suture arm 4 are respectively against the primary septum 600 and the secondary septum 700 at the position of the oval foramen, and then refer to Figure 34b , extend the first suture needle 31 through the primary septum 600 and connect it to one side of the suture arm 4, thereby pulling out one end 5a of the suture thread 5 from the suture arm 4, extend the second suture needle 32 through the secondary septum 700 and connect it to the other side of the suture arm 4, thereby pulling out the other end 5b of the suture thread 5 from the suture arm 4, the first suture needle 31 and the second suture needle 32 respectively carry the two ends 5a and 5b of the suture thread 5 and slowly withdraw them proximally into the sheath tube 2 until they are withdrawn outside the body. At the same time, the middle part 5c of the suture thread 5 is slowly released from the wire drum 300, and then slowly moves toward the distal end until it reaches the position of the primary septum and the secondary septum (see Figure 34c ), and finally, the knotter is fed into the body along the two ends 5a and 5b of the suture line 5, and the excess part of the suture line 5 is cut to complete the suture of the patent foramen ovale. Figure 34a 、 Figure 34b and Figure 34c The first suture needle 31, the second suture needle 32, the suture arm 4, the sheath tube 2 and the thread drum 300 are not shown in the figure. For related structures, please refer to the aforementioned embodiments.

[0135] The foregoing description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be readily conceived by a person skilled in the art within the technical scope disclosed in the present invention are intended to be encompassed within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A suturing device comprising a suturing needle, a suturing arm, and a suturing thread, wherein at least one end of the suturing thread is located on the suturing arm, and the distal end of the suturing needle can be connected to the suturing arm to extract at least one end of the suturing thread from the suturing arm, characterized in that: The suturing device further comprises a handle, wherein the handle comprises an actuating assembly, a needle seat, a sleeve-like structure, a handle housing and a sleeve-like structure housing. The sleeve-like structure housing is arranged outside the sleeve-like structure and is connected to the sleeve-like structure, the sleeve-like structure is connected to the needle seat, the needle seat is connected to the proximal end of the suturing needle, the actuating assembly and the needle seat are detachably connected, the actuating assembly is arranged in the handle housing, and the actuating assembly controls the extension and retraction of the suturing needle through the needle seat. When the suturing needle is extended, the distal end of the suturing needle can be connected to the suturing arm. The handle shell and the sleeve-like structure shell are detachably connected, and a release-aiding member is provided on at least one of the handle shell, the sleeve-like structure shell or the sleeve-like structure. When the sleeve-like structure shell and the handle shell begin to be released, the release-aiding member is used to move the handle shell away from the sleeve-like structure shell until the handle shell and the sleeve-like structure shell are completely released. The sleeve-like structure shell drives the needle seat to disengage from the actuating assembly through the sleeve-like structure, so that the suture needle is withdrawn from the handle.

2. The suturing device according to claim 1, characterized in that The release aid includes an inclined surface structure arranged in the handle shell, and the inclined surface structure is inclined from the radial outward toward the distal direction. A connecting piece is provided on the sleeve-shaped structure shell, and a matching piece is provided on the inner wall of the handle shell. The connecting piece is inserted into the handle shell from the proximal end to the distal end and is connected and fixed to the matching piece. The connecting piece has a free end. When the connecting piece disengages from the distal end to the proximal end and disengages from the matching piece in the radial direction, the free end of the connecting piece abuts against the inclined surface structure and can move from the distal end to the proximal end along the inclined surface structure.

3. The suturing device according to claim 2, characterized in that A slit is provided at the position where the connecting piece is provided in the sleeve-like structural shell, and the slit enables the position where the connecting piece is provided in the sleeve-like structural shell to move relative to other positions in the sleeve-like structural shell.

4. The suturing device according to claim 3, characterized in that The connecting member includes a hook-shaped structure pointing radially outward, and the matching member includes a convex structure or a groove structure. The hook-shaped structure and the convex structure or the groove structure cooperate with each other and can be fixed.

5. The suturing device according to claim 1, characterized in that The release aid includes a movable connecting part arranged on the sleeve-like structure or the sleeve-like structure shell, and the movable connecting part includes a connecting part, a pushing part and a rotating part. The rotating part is arranged between the connecting part and the pushing part, and the rotating part is rotatably connected to the sleeve-like structure or the sleeve-like structure shell. The connecting part is detachably connected to the handle shell. When the sleeve-like structure shell is separated from the handle shell, the connecting part is pushed toward the proximal end to separate the connecting part from the handle shell. The rotating part rotates relative to the sleeve-like structure or the sleeve-like structure shell, driving the pushing part to push the handle shell toward the distal end.

6. The suturing device according to claim 5, characterized in that: The distal end of the sleeve-like structure extends beyond the distal end of the sleeve-like structure shell. The movable connecting piece is sleeved on the sleeve-like structure, and in the axial direction, the movable connecting piece is arranged between the sleeve-like structure shell and the handle shell. When the connecting portion and the handle shell are fixedly connected to each other, the pushing portion is against the sleeve-like structure shell.

7. The suturing device according to claim 5, characterized in that: The movable connecting piece is sleeved on the sleeve-like structural shell, and the sleeve-like structural shell is further provided with a supporting piece. When the connecting portion and the handle shell are fixedly connected to each other, the pushing portion and the supporting piece are abutted.

8. The suturing device according to claim 5, characterized in that The connecting portion includes a hook-shaped structure facing the handle housing, and a convex structure or a groove structure is provided on the outside of the handle housing. The hook-shaped structure cooperates with the convex structure or the groove structure and can be fixed.

9. The suturing device according to claim 5, characterized in that: The movable connecting member is a plate-shaped structure as a whole, the plate-shaped structure is provided with an opening, the inner wall of the opening is provided with the rotating part, the movable connecting member is sleeved on the sleeve-shaped structure or the outer shell of the sleeve-shaped structure through the opening, and the rotating part is rotatably connected to the sleeve-shaped structure or the outer shell of the sleeve-shaped structure.

10. The suturing device according to claim 1, characterized in that One of the sleeve-like structure and the needle seat is provided with a through-hole structure, and the other of the sleeve-like structure and the needle seat is provided with a fixing structure, and the fixing structure is restricted to move within the through-hole structure.

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