Bendable clip applier

Abstract

The utility model discloses a bendable clip applier. The clip applier comprises a tube body assembly, a jaw assembly and a handle assembly, the tube body assembly is provided with a near end and a far end and comprises an inner tube assembly, the inner tube assembly at least comprises a first part and a second part, and the first part and the second part are rotationally connected; the jaw assembly is connected to the far end of the tube body assembly and is connected with the first part; the handle assembly is connected to the near end of the tube body assembly and comprises a bending control button, and the bending control button is configured to control the first part to bend relative to the second part. The clip applier can perform bending operation, and is more flexible to operate, easy to control and safer to use.

Description

Technical Field

[0001] Embodiments of the present disclosure relate to a bendable clip applier. Background Art

[0002] Laparoscopy, endoscopy, and other minimally invasive surgical techniques enable surgeons to perform complex surgeries inside the body through tiny incisions. Many surgical procedures require ligating blood vessels during the operation. For example, many surgical procedures require cutting blood vessels (such as veins or arteries), and these blood vessels may need to be ligated to reduce bleeding. In some cases, surgeons may wish to temporarily ligate blood vessels to reduce the blood flow to the surgical site during the operation. In other cases, surgeons may wish to permanently ligate blood vessels.

[0003] Vascular ligation can be achieved by using ligating clips to close blood vessels or suturing blood vessels with sutures. Using sutures for vascular ligation requires complex operations on needles and suture materials to form the knots required for ligating blood vessels. Such complex operations are very time-consuming and difficult to perform, especially in laparoscopic surgeries, where the difficulty of such operations increases significantly. The operation of using ligating clips to close blood vessels is simpler and more reliable, and clip appliers can be used to control the closing and opening actions of ligating clips.

[0004] The jaws of current clip appliers cannot be bent, and doctors cannot accurately position the jaws, resulting in limited surgical space. Summary of the Utility Model

[0005] At least one embodiment of the present disclosure provides a bendable clip applier, which includes a tube body assembly, a jaw assembly, and a handle assembly; the tube body assembly has a proximal end and a distal end, and includes an inner tube assembly, wherein the inner tube assembly at least includes a first part and a second part, and the first part and the second part are rotatably connected; the jaw assembly is connected to the distal end of the tube body assembly and is connected to the first part; the handle assembly is connected to the proximal end of the tube body assembly and includes a bending control knob, wherein the bending control knob is configured to control the bending of the first part relative to the second part.

[0006] For example, in the clip applier provided by at least one embodiment of the present disclosure, the tube body assembly further includes at least one bending connection assembly connecting the first part and the bending control knob, and the bending control knob is configured to control the displacement of the at least one bending connection assembly along the axial direction of the tube body assembly to control the bending of the first part relative to the second part.

[0007] For example, in the clip applier provided by at least one embodiment of the present disclosure, the at least one bending connection assembly includes a first bending connection member and a second bending connection member. The first bending connection member and the second bending connection member respectively include opposite first ends and second ends. The first ends of the first bending connection member and the second bending connection member are respectively connected to opposite sides of the first portion, and the second ends of the first bending connection member and the second bending connection member are respectively connected to different positions of the bending control knob. The bending control knob is configured to control the relative movement of the first bending connection member and the second bending connection member along the axial direction by rotation, so as to control the bending of the first portion relative to the second portion.

[0008] For example, in the clip applier provided by at least one embodiment of the present disclosure, the bending control knob includes a connection member control portion. The connection member control portion includes a first sliding guide track and a second sliding guide track. The second ends of the first bending connection member and the second bending connection member are respectively connected to the first sliding guide track and the second sliding guide track. The bending control knob is configured to control the sliding of the first bending connection member and the second bending connection member on the first sliding guide track and the second sliding guide track by rotation, so as to control the relative movement of the first bending connection member and the second bending connection member along the axial direction.

[0009] For example, in the clip applier provided by at least one embodiment of the present disclosure, the first bending connection member and the second bending connection member are respectively connected to the first sliding guide track and the second sliding guide track through a first sliding seat and a second sliding seat. The bending control knob is configured to control the sliding of the first sliding seat and the second sliding seat on the first sliding guide track and the second sliding guide track by rotation, so as to control the relative movement of the first bending connection member and the second bending connection member along the axial direction.

[0010] For example, in the clip applier provided by at least one embodiment of the present disclosure, the first sliding guide track and the second sliding guide track respectively extend along the axial direction and a direction angled with respect to the axial direction.

[0011] For example, in the clip applier provided by at least one embodiment of the present disclosure, the first sliding guide track and the second sliding guide track are arc-shaped, and the arc shape has at least two different radii along its extending direction.

[0012] For example, in the clip applier provided by at least one embodiment of the present disclosure, the arc shapes of the first sliding guide track and the second sliding guide track have gradually increasing radii in the clockwise or counterclockwise direction.

[0013] For example, in the clip applicator provided by at least one embodiment of the present disclosure, the handle assembly further includes a first movement guide plate and a second movement guide plate. The first movement guide plate and the second movement guide plate respectively include a limit track extending along the axial direction. The first slide seat and the second slide seat are respectively connected to the connecting member control part through the first movement guide plate and the second movement guide plate to limit the movement distance of the first slide seat and the second slide seat along the axial direction.

[0014] For example, in the clip applicator provided by at least one embodiment of the present disclosure, the limit track of the first movement guide plate includes a first guide hole extending along the axial direction. The first slide seat passes through the first guide hole and is connected to the first sliding guide track of the connecting member control part. The limit track of the second movement guide plate includes a second guide hole extending along the axial direction. The second slide seat passes through the second guide hole and is connected to the second sliding guide track of the connecting member control part. The first movement guide plate further includes a first fixing part, and the second movement guide plate further includes a second fixing part. The first fixing part is slidably connected to the second sliding guide track, and the second fixing part is slidably connected to the first sliding guide track.

[0015] For example, in the clip applicator provided by at least one embodiment of the present disclosure, the inner tube assembly further includes a third part. The first part, the second part, and the third part are arranged in sequence along the axial direction. The second part and the third part are rotatably connected. The inner tube assembly is configured as follows: the first part rotates relative to the second part around a first rotation axis, and the second part rotates relative to the third part around a second rotation axis. The second rotation axis is parallel to the first rotation axis.

[0016] For example, in the clip applicator provided by at least one embodiment of the present disclosure, the handle assembly further includes a handle base and a rotating head connected to the handle base. Wherein, at least part of the rotating head is sleeved on the tube body assembly. The rotating head is arranged to rotate around the axis of the tube body assembly and is configured to controllably drive the tube body assembly and the jaw assembly to rotate around a third rotation axis relative to the handle base. The third rotation axis is parallel or coincident with the axial direction of the tube body assembly.

[0017] For example, in the clip applicator provided by at least one embodiment of the present disclosure, the bending control button is arranged on one side of the rotating head.

[0018] For example, in the clip applicator provided by at least one embodiment of the present disclosure, the tube body assembly further includes an outer tube assembly sleeved on the outside of the inner tube assembly. At least part of the rotating head is sleeved on the outside of the outer tube assembly and is fixedly connected to the tube body assembly.

[0019] For example, in the clamp applier provided by at least one embodiment of the present disclosure, the handle assembly also includes a first push tube structure disposed in the handle base, the rotating head includes a first rotating portion, the tube body assembly is connected to the first push tube structure, and the first rotating portion is configured to rotate relative to the first push tube structure, thereby causing the tube body assembly and the jaw assembly to rotate as a whole around the axis of the tube body assembly.

[0020] Compared with the prior art, the advantageous effect of the clip applier provided by at least one embodiment of the present disclosure is that the clip applier has both bending and rotating functions, can achieve a large range of bending in a limited space, has higher stability, and is not restricted by rotational motion. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present disclosure, but are not intended to limit the present disclosure.

[0022] Figure 1 A schematic diagram of the three-dimensional structure of a clip applier provided in at least one embodiment of the present disclosure;

[0023] Figure 2 An exploded view of a clip applier provided in at least one embodiment of the present disclosure;

[0024] Figure 3 An exploded view of a jaw assembly and adjacent components of a clip applier provided for at least one embodiment of the present disclosure;

[0025] Figure 4 A schematic cross-sectional view of a blade body of a clip applier provided in at least one embodiment of the present disclosure;

[0026] Figure 5 for Figure 3 A top view of the jaw assembly of the clip applier and its adjacent components;

[0027] Figure 6 for Figure 3 A side view of the jaw assembly of the clip applier and its adjacent components;

[0028] Figure 7 A schematic diagram of the three-dimensional structure of a conjoined ligation clip provided in at least one embodiment of the present disclosure;

[0029] Figure 8 A schematic diagram of the internal structure of a handle assembly of a clip applier provided in at least one embodiment of the present disclosure;

[0030] Figure 9 A partial perspective schematic diagram of a feeding assembly of a clip applier provided in at least one embodiment of the present disclosure;

[0031] Figure 10 The top view schematic diagram of the feeding component of the clip applicator provided by at least one embodiment of the present disclosure;

[0032] Figure 11 Another schematic diagram of the internal structure of the handle assembly of the clip applicator provided by at least one embodiment of the present disclosure;

[0033] Figure 12 The structural schematic diagram of the feeding handle of the clip applicator provided by at least one embodiment of the present disclosure;

[0034] Figure 13 The schematic diagram of the radius change curve of the first push tube control part of the clip applicator provided by at least one embodiment of the present disclosure;

[0035] Figure 14 The disassembled schematic diagram of a part of the structure of the handle assembly of the clip applicator provided by at least one embodiment of the present disclosure;

[0036] Figure 15 The disassembled schematic diagram of a part of the structure inside the handle assembly of the clip applicator provided by at least one embodiment of the present disclosure;

[0037] Figure 16 Another disassembled schematic diagram of a part of the structure of the handle assembly of the clip applicator provided by at least one embodiment of the present disclosure;

[0038] Figure 17 The schematic diagram of a part of the structure of the handle assembly of the clip applicator provided by at least one embodiment of the present disclosure;

[0039] Figure 18 The schematic diagram of a part of the structure of the handle assembly of the clip applicator provided by at least one embodiment of the present disclosure; and

[0040] Figures 19 - 22 The schematic diagram of the process from the first feeding to the clamping of the clip applicator provided by at least one embodiment of the present disclosure. Detailed implementation manners

[0041] To make the objectives, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are some but not all of the embodiments of the present disclosure. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present disclosure without creative efforts shall fall within the scope of protection of the present disclosure.

[0042] Unless otherwise defined, technical terms or scientific terms used in this disclosure shall have the ordinary meanings as understood by those of ordinary skill in the art to which this disclosure pertains. The terms "first", "second" and similar words used in this disclosure do not denote any order, quantity or importance, but are only used to distinguish different components. Words such as "comprising" or "including" mean that the elements or items appearing before this word cover the elements or items listed after this word and their equivalents, without excluding other elements or items. Words such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. Words such as "upper", "lower", "left", "right" are only used to indicate relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0043] In embodiments of the present disclosure, the term "proximal" refers to a part of a component or structure involved that is close to the clinician, and the term "distal" refers to a part of a component or structure involved that is away from the clinician. The term "plurality" means two or more. The term "at least one" means one or more.

[0044] During the process of closing a blood vessel with a ligating clip, a clip applier (or ligating forceps) is usually used to insert the ligating clip through a trocar into a designated position in the body cavity. In use, the ligating clip can be positioned on the blood vessel to be ligated, and the clip applier is controlled outside the body to close the ligating clip.

[0045] However, in traditional operating methods, only one ligating clip can be picked up and clamped each time. If multiple ligating clips are needed, the clip applier needs to be taken out of the cavity, the ligating clip is picked up again outside the cavity, and then reinserted into the cavity to clamp the ligating clip. Clinically, each surgical operation often requires several ligating clips. Repeatedly picking up ligating clips greatly reduces the surgical efficiency and increases the surgical risk.

[0046] In some embodiments, a method of continuous firing of ligating clips can be used, that is, multiple ligating clips are loaded on one clip applier, so that the operator does not need to withdraw the clip applier from the cavity and can continuously clamp multiple ligating clips.

[0047] However, in the current methods of controlling the continuous firing of ligating clips using a clip applier, there are often many problems. For example, when the ligating clip is not properly placed in the jaws of the clip applier, the clip may fall off from the jaws or the closing may fail; multiple ligating clips are blocked in the track for delivering the ligating clip, resulting in the failure of closing the ligating clip; the deformation of the material of the ligating clip itself easily causes the ligating clip to not be effectively fixed in the jaws of the clip applier; when operating the handle, it needs to be in a specific order and cannot be operated reversely, otherwise the clamping cannot be performed; the jaws of the clip applier cannot be bent, resulting in limited surgical operating space.

[0048] In summary, there are several deficiencies in the ligating clip during sequential clip application, and a better structure is needed to safely and reliably convey and close the ligating clips in sequence, and to minimize damage to blood vessels.

[0049] A bendable clip applicator provided by at least one embodiment of the present disclosure includes a tube body assembly, a jaw assembly, and a handle assembly; the tube body assembly has a proximal end and a distal end and includes an inner tube assembly, wherein the inner tube assembly includes at least a first part and a second part, and the first part and the second part are rotatably connected; the jaw assembly is connected to the distal end of the tube body assembly and is connected to the first part; the handle assembly is connected to the proximal end of the tube body assembly and includes a bending control knob, wherein the bending control knob is configured to control the bending of the first part relative to the second part.

[0050] The clip applicator provided by the embodiment of the present disclosure can perform a bending operation, with more flexible operation, easier control, and safer use.

[0051] The clip applicator provided by the embodiment of the present disclosure will be described below through several specific examples.

[0052] At least one embodiment of the present disclosure provides a bendable clip applicator, Figure 1 A perspective structural view of the clip applicator is shown, Figure 2 An exploded view of the clip applicator is shown. As Figure 1 and Figure 2 shown, the clip applicator includes a tube body assembly 10, a jaw assembly 20, a handle assembly 30, etc.

[0053] As Figure 1 and Figure 2 shown, the tube body assembly 10 has a proximal end 10A and a distal end 10B and includes an inner tube assembly 11 and an outer tube assembly 12 sleeved outside the inner tube assembly 11, and the inner tube assembly 11 and the outer tube assembly 12 can be controlled to move relative to each other along the axial direction (i.e., the first direction R1 in Figure 2 ).

[0054] For example, in some embodiments, the tube body assembly 10 further includes a feeding assembly 13 located inside the inner tube assembly 11, and the feeding assembly 13 can accommodate at least one ligating clip A, for example, accommodate a plurality of ligating clips A, for pushing and use.

[0055] As Figure 1 and Figure 2 shown, the jaw assembly 20 is connected to the distal end 10B of the tube body assembly and includes a first jaw 21 and a second jaw 22 that are connected to the inner tube assembly 11 and are oppositely arranged. The first jaw 21 and the second jaw 22 form a clip applying forceps, which can open and close the ligating clip. Figure 3 An exploded view of the jaw assembly and its adjacent structures is shown. As Figure 3As shown, the first jaw 21 and the second jaw 22 of the clip applicator respectively include a tail portion 201 connected to the inner tube assembly 11, a head portion 202 opposite to the tail portion 201, and a connecting portion 203 between the tail portion 201 and the head portion 202.

[0056] It should be noted that, in Figure 3 , the first jaw 21 is taken as an example for numbering and showing. It can be understood that the second jaw 22 may have the same or similar structure as the first jaw 21. Specifically, reference can be made to the description of the first jaw 21, which will not be elaborated here. For example, in some embodiments, the first jaw 21 and the second jaw 22 are symmetrically structured.

[0057] As Figure 1 and Figure 2 shown, the handle assembly 30 is connected to the proximal end 10A of the tube assembly and is configured to control the relative movement of the inner tube assembly 11 and the outer tube assembly 12, so that the outer tube assembly 12 can abut against different parts of the first jaw 21 and the second jaw 22 through relative movement, thereby controlling the closing and opening of the first jaw 21 and the second jaw 22, that is, controlling the closing and opening of the clip applicator.

[0058] For example, as Figure 1 and Figure 2 shown, the handle assembly 30 includes a feeding handle 31, and the feeding handle 31 is configured to control the relative movement of at least part of the inner tube assembly 11, the outer tube assembly 12, and the feeding assembly 13 in the tube assembly 10 along the axial direction of the tube assembly 10 ( Figure 2 the first direction R1 in

[0059] ), so as to control the feeding assembly 13 to apply a ligation clip to the clip applicator (for example, by controlling the movement of at least part of the components in the feeding assembly 13 relative to the inner tube assembly 11) and / or control the closing and opening of the clip applicator (for example, by controlling the relative movement of the inner tube assembly 11 and the outer tube assembly 12). Thus, the feeding handle 31 can simultaneously realize the feeding process and the clamping process of the ligation clip, and realize the linkage of the feeding process and the clamping process. The specific structure of the feeding handle 31 and its control process will be introduced in detail later. Figure 3 shown, the connecting portion 203 includes a first mating surface 203A that mates with the outer tube assembly 12, and the first mating surface 203A is configured to be able to abut against and relatively slide with the outer tube assembly 12 during the relative movement of the inner tube assembly 11 and the outer tube assembly 12, so as to realize the closing and opening of the first jaw 21 and the second jaw 22 through the extrusion of the outer tube assembly 12 on the first jaw 21 and the second jaw 22.

[0060] For example, in some embodiments, as Figure 3As shown, the jaw assembly 20 may further include a cutting blade 23 rotatably connected to the inner tube assembly 11. The cutting blade 23 includes a second mating surface 23A configured to abut and slide relative to the outer tube assembly 12 when the inner tube assembly 11 and the outer tube assembly 12 move relative to each other, so as to achieve a cutting action by relative rotation with the inner tube assembly 11.

[0061] For example, as Figure 3 shown, the cutting blade 23 includes opposite first and second blade bodies 24 and 25, and the first and second blade bodies 24 and 25 are symmetrically rotatably connected to the inner tube assembly 11. For example, the first and second blade bodies 24 and 25 are respectively rotatably connected to the inner tube assembly 11 through a rotating shaft 251. For example, the extending direction of the rotating shaft 251 is Figure 3 the second direction R2 in

[0062] For example, Figure 4 shows a cross-sectional schematic view of the first blade body 24, or Figure 2 a top view of the first blade body 24 along the second direction R2 in Figure 4 . As Figure 4 shown, the cross-sections of the first and second blade bodies 24 and 25 are respectively V-shaped. The V-shape includes a first linear portion 241 and a second linear portion 242 connected to each other. The end of the first linear portion 241 away from the second linear portion 242 is formed as a cutting portion, as shown by the dotted circle in Figure 3 . The end of the second linear portion 242 away from the first linear portion 241 (i.e., the position indicated by reference numeral 244 in Figure 4 or a position near it) is hinged to the inner tube assembly 11.

[0063] For example, as Figure 3 shown, the second linear portion 242 includes the second mating surface 23A. For example, Figure 5 shows Figure 3 a top view of the jaw assembly in Figure 5 along the second direction R2. As

[0064] shown, when the inner tube assembly 11 and the outer tube assembly 12 move relative to each other, the outer tube assembly 12 will abut the second mating surface 23A and slide along the second mating surface 23A, so that the first and second blade bodies 24 and 25 can rotate relative to the inner tube assembly 11 about the rotating shaft 251 to achieve a cutting action on an object to be cut in the clamping pliers (such as the connecting portion between ligation clips, which will be introduced in detail later).

[0064] For example, as Figure 5 shown, the distal end of the inner wall of the outer tube assembly 12 can be chamfered, as Figure 5As shown by the dashed circle, it helps to have a larger contact surface against the surface of the clip applicator when the outer tube assembly 12 moves relative to the inner tube assembly, avoiding the generation of locally large pressure and fully squeezing the first jaw 21 and the second jaw 22 of the clip applicator to close the ligating clip.

[0065] For example, Figure 6 shows Figure 3 a top view schematic diagram of the jaw assembly in [the figure] along the third direction R3, as Figure 6 shown, the connecting portion 203 includes a tool body avoidance portion 26 located inside the connecting portion 203, and the first tool body 24 and the second tool body 25 are located at the tool body avoidance portion 26. For example, the tool body avoidance portions 26 of the first jaw 21 and the second jaw 22 are respectively grooves with a contour similar to the outer shape of the first tool body 24 and the second tool body 25 but with a slightly larger size than the first tool body 24 and the second tool body 25. Thus, the first tool body 24 and the second tool body 25 have sufficient rotation space and can fully act on the object to be cut (such as the connecting member between the ligating clips) located between the first jaw 21 and the second jaw 22 to achieve the effect of full cutting.

[0066] For example, as Figure 3 and Figure 4 shown, the first tool body 24 and the second tool body 25 also respectively include tool body limiting portions 243. The tool body limiting portions 243 are connected to the ends of the second linear portions 242 of the first tool body 24 and the second tool body 25 that are far from the first linear portions 241, and in cross-section, as Figure 4 shown, the tool body limiting portions 243 and the second linear portions 242 form an obtuse angle a.

[0067] For example, the tool body limiting portions 243 are located between the inner tube assembly 11 and the outer tube assembly 12. When the first tool body 24 and the second tool body 25 are in the open state (non-cutting state), the tool body limiting portions 243 can abut against the inner tube assembly 11. When the first tool body 24 and the second tool body 25 are in the closed state (cutting state), the tool body limiting portions 243 can gradually turn towards the outer tube assembly 12, for example, contacting the inner wall of the outer tube assembly 12, thereby limiting the rotation range of the first tool body 24 and the second tool body 25 to make the control of the first tool body 24 and the second tool body 25 safer.

[0068] For example, as Figure 4 shown, an acute angle b is formed between the first linear portion 241 and the second linear portion 242, so that the cutting portions of the first tool body 24 and the second tool body 25 can be fully turned towards the object to be cut in the clip applicator through a small range of rotation of the first tool body 24 and the second tool body 25 to achieve cutting.

[0069] For example, in some embodiments, as Figure 3As shown, the axial direction of the tube body assembly 10 is along the first direction R1, the rotation axis 251 of the first blade body 24 and the second blade body 25 is along the second direction R2, the first clamp head 21 and the second clamp head 22 are rotatably connected to the inner tube assembly 11, for example, rotatably connected to the inner tube assembly 11 through a pin 27, the rotation axis of the first clamp head 21 and the second clamp head 22 is a third direction R3, the first direction R1 is perpendicular to the second direction R2, and perpendicular to the third direction R3, and the second direction R2 is perpendicular to the third direction R3.

[0070] For example, in some embodiments, Figure 3 and Figure 6 As shown, the outer tube assembly 12 includes a push knife structure 28 opposite to the second mating surface 23A, and the push knife structure 28 is configured to be able to interfere with the second mating surface 23A when the inner tube assembly 11 and the outer tube assembly 12 move relative to each other, so as to drive the cutting knife 23 to rotate and realize the cutting action.

[0071] For example, the pusher structure 28 includes a protrusion disposed on the inner wall of the outer tube assembly 12. For example, the protrusion may be a block structure fixed to the inner wall of the outer tube assembly 12, such as a push block or a pin formed by welding or assembly; or, the protrusion may be a structure formed by stamping or the like and integrated with the outer tube assembly 12, in which case the outer wall (appearance) of the outer tube assembly 12 has a concave structure, such as Figure 3 and Figure 6 shown.

[0072] For example, Figure 7 A one-piece ligation clip is shown, such as Figure 7 As shown, the conjoined ligation clamp includes a plurality of ligation clamps A, each ligation clamp A includes a first beam A1, a second beam A2, and an elastic connection portion A3 connecting the first beam A1 and the second beam A2, and the elastic connection portion A3 is configured to allow the first beam A1 and the second beam A2 to have an open state ( Figure 7 Each ligation clip A has a hollow portion A31 at the elastic connection portion A3, and the hollow portion A31 is in the form of a crescent or a strip, so that the elastic connection portion A3 can be elastically deformed accordingly when the elastic connection portion A3 is in the open state and the closed state.

[0073] For example, each ligation clip A can be closed on a blood vessel or tissue in a controllable manner to achieve hemostasis and sealing effects.

[0074] For example, Figure 7 As shown, every two adjacent ligation clips A are connected by a connector B, and the connection method of the two adjacent ligation clips A is basically the same. For example, the connector B can be made of a flexible material, such as silicone rubber, thermoplastic elastomer (TPE) or cotton thread, or the connector B can also be made of a hard material, such as plastic.

[0075] For example, as Figure 7 shown, the first beam A1 includes a first boss A4, which can be used for limiting in the applicator. When the ligating clip is pushed to the clamping jaws of the applicator, the first boss A4 can also be used for positioning at the jaws of the clamping jaws. The second beam A2 includes a second boss A5. When the ligating clip is closed, the second boss A5 can be used to limit the hook portion (shown by the dotted circle in the figure) of the first beam A1 at the gap of the second boss A5, so as to make the closing more stable. In addition, when the ligating clip is pushed to the clamping jaws of the applicator, the second boss A5 is used for limiting in the applicator and can also be used for positioning at the jaws of the clamping jaws of the applicator.

[0076] For example, the above-mentioned connected ligating clips can be accommodated in the feeding assembly 13 of the applicator. Each ligating clip can be sequentially and controllably pushed into the clamping jaws and used. For example, the cutting knife 23 of the applicator is used to cut the connecting member B between two adjacent ligating clips A, so that each ligating clip A can be used independently. In the applicator, the plurality of ligating clips are connected through the connecting member B, so that the distance between adjacent ligating clips A can be controlled, and they can be moved simultaneously without causing adverse phenomena such as blockage, making the pushing and use of the ligating clips more orderly and safe.

[0077] The specific structure of the handle assembly 30 and its control process will be introduced in detail below.

[0078] For example, Figure 8 shows a schematic internal structure diagram of the handle assembly. As Figure 8 shown, the handle assembly 30 further includes a handle base 30A and a first push tube structure 33 disposed within the handle base 30A. The first push tube structure 33 is respectively connected to the tube body assembly 10 and the feeding handle 31. The feeding handle 31 is configured to control the first push tube structure 33 to control the relative movement of at least a part of the inner tube assembly 11, the outer tube assembly 12, and the feeding assembly 13 in the tube body assembly 10.

[0079] For example, as Figure 8 shown, the first push tube structure 33 includes a first pushing portion 331, which can also be referred to as a feeding pushing portion, for controlling the feeding operation. Figure 9 shows a partial perspective view of the feeding assembly, Figure 10 shows Figure 9 the top view of the feeding assembly in Figure 9 and Figure 10 shown. The feeding assembly 13 includes a pushing structure 131. The first pushing portion 331 is connected to the pushing structure 131. The feeding handle 31 is configured to control the movement of the first pushing portion 331 in the axial direction to push the pushing structure 131 to apply the ligating clip.

[0080] For example, asFigure 9 and Figure 10 As shown, the pusher structure 131 is integrally sheet-shaped, for example, in the form of a resilient sheet, and includes a plurality of pushing branches 131A. The plurality of pushing branches 131A are respectively inclined inward (i.e., inclined towards the space for accommodating the ligating clips), so that the plurality of pushing branches 131A can be respectively used to push a plurality of ligating clips A. For example, in the Figure 9 and Figure 10 example, the plurality of pushing branches 131A are arranged in two upper and lower rows to respectively act on the first protrusion A4 and the second protrusion A5 of the plurality of ligating clips A, so as to push the plurality of ligating clips A simultaneously on the upper and lower sides, ensure the uniform force on the plurality of ligating clips A, and further ensure the pushing form of the plurality of ligating clips A.

[0081] For example, as Figure 9 and Figure 10 shown, the feeding assembly 13 further includes a limiting structure 132. For example, the limiting structure 132 is integrally sheet-shaped, for example, in the form of a resilient sheet. The limiting structure 132 includes a plurality of limiting portions 132A. The structures of the plurality of limiting portions 132A are substantially the same as those of the plurality of pushing branches 131A, but are slightly offset relative to the plurality of pushing branches 131A. As Figure 10 shown, the plurality of limiting portions 132A are respectively more forward relative to the corresponding pushing branches 131A, that is, closer to the distal end, so that the plurality of limiting portions 132A can be respectively used to limit the plurality of ligating clips A pushed to the limiting portions 132A by the pushing branches 131A.

[0082] For example, the limiting structure 132 is a fixed structure and will not be moved. The pusher structure 131 is a controllable movable structure. When the pusher structure 131 is pushed by the first pusher 331, the pusher structure 131 moves along the axial direction relative to the limiting structure 132.

[0083] For example, the pusher structure 131 has an initial position and a pushing-out position. As Figure 9 and Figure 10As shown, during the process of pushing the pusher structure 131, the pusher structure 131 starts from the initial position and moves relative to the limiting structure 132, causing the pushing branch 131A to abut against the rear ends (the right side in the figure) of the first protrusion A4 and the second protrusion A5, so as to push a plurality of ligating clips A towards the distal end of the tube assembly 20. The ligating clips A respectively squeeze the limiting portion 132A, causing the limiting portion 132A to elastically deform. When a plurality of ligating clips A are pushed by a pitch (for example, the length occupied by one ligating clip and one connecting member B), the ligating clip A reaches the limiting portion 132A in front of it and is limited by the limiting portion 132A in front of it. At this time, the limiting portion 132A rebounds, so that the ligating clip A cannot retreat. At this time, the pusher structure 131 reaches the pushing-out position, thereby realizing one feeding operation. After that, the pusher structure 131 can be controlled to retreat to the initial position. Due to the limiting effect of the limiting portion 132A, the ligating clip A will no longer move, and the ligating clip A has been pushed by a pitch.

[0084] For example, the ligating clip A loaded in the feeding assembly 13 is in a semi-closed state. In some cases, due to being in the semi-closed state for a long time, the ligating clip A may not be able to return to the fully open state by its own elasticity. During the above feeding process, through the thrust transmitted by the pusher structure 131, when the ligating clip is pushed to the clip applicator, since the first boss A4 and the second boss A5 of the ligating clip A are limited, the thrust transmitted by the pusher structure 131 can promote the opening of the ligating clip, so that the ligating clip A can be smoothly opened, thereby avoiding the ligating clip from falling off when the clip applicator is opened, and increasing the safety of the ligating clip A.

[0085] For example, the clip applicator is connected to the inner tube assembly 11. Figure 11 Another schematic diagram showing the internal structure of the handle assembly is shown, as Figure 11 shown, the first push tube structure 33 further includes a second pushing portion 332, which can also be called an outer tube pushing portion, for controlling the movement of the outer tube assembly 12 relative to the inner tube assembly 11, thereby realizing the control of the clip applicator and the cutter.

[0086] For example, the second pushing portion 332 is connected to the outer tube assembly 12, and the feeding handle 31 is configured to control the movement of the second pushing portion 332 in the axial direction, so as to control the relative movement of the outer tube assembly 12 relative to the inner tube assembly 11 in the axial direction, so that the outer tube assembly 12 can abut against the clip applicator and control the clip applicator to close or open.

[0087] For example, the second pushing portion 332 is sleeved on the first pushing portion 331. For example, the second pushing portion 332 is sleeved on the outside of the first pushing portion 331. At this time, Figure 11 Relative to Figure 10 it is the case where the second pushing portion 332 is sleeved on the outside of the first pushing portion 331.

[0088] For example, as Figure 8 shown, the feeding handle 31 includes a first engaging portion 333 that cooperates with the first pushing portion 331 and a second engaging portion 334 that cooperates with the second pushing portion 332. The feeding handle 31 is configured to simultaneously control the first engaging portion 333 and the second engaging portion 334 in a controlled manner to respectively control the movement of the first pushing portion 331 and the second pushing portion 332, thereby simultaneously controlling the feeding operation and the opening and closing operations of the clamping pliers. Thus, the linkage between the feeding operation and the opening and closing operations of the clamping pliers can be achieved, and the correlation between feeding and clamping can be automatically controlled, with simple and reliable operation.

[0089] For example, at least one of the first engaging portion 333 and the second engaging portion 334 is an engaging part.

[0090] For example, in some examples, both the first engaging portion 333 and the second engaging portion 334 are engaging parts, and the first engaging portion 333 and the second engaging portion 334 can be provided on the same component. For example, Figure 12 shows a schematic structural diagram of the feeding handle 31. As Figure 12 shown, the first engaging portion 333 and the second engaging portion 334 are continuously provided engaging parts, such as tooth-shaped engaging parts; or rather, the first engaging portion 333 and the second engaging portion 334 are respectively different parts of the tooth-shaped engaging portion of the feeding handle 31.

[0091] For example, in other embodiments, the first engaging portion 333 and the second engaging portion 334 can also be independent components or other cooperating components other than the engaging parts.

[0092] For example, as Figure 8 shown, in this embodiment, the first pushing portion 331 has an engaging portion that meshes with the first engaging portion 333, such as a tooth-shaped engaging portion, so that it can be driven by the feeding handle 31. For example, as Figure 8 and Figure 11 shown, the handle assembly further includes a first push tube control portion 335 and a second push tube control portion 336. The first push tube control portion 335 has an engaging portion that meshes with the second engaging portion 334, such as a gear. The second engaging portion 334 meshes with the gear of the first push tube control portion 335 so that the second push tube control portion 336 can be driven by the feeding handle 31.

[0093] For example, the first push tube control portion 335 includes a curved guiding track, and the curved guiding track is a curve with a changing radius, such as a closed curve with a changing radius. The second push tube control portion 336 is configured to be limited to the curved guiding track and can be driven by the first push tube control portion 335 to move along the curved guiding track. The second push tube control portion 336 includes a follower block 337, and the follower block 337 is configured to be able to control the movement of the second pushing portion 332 by abutting against the second pushing portion 332.

[0094] For example, the outer contour of the first pusher control part 335 is a curve with a changing radius (refer to the subsequent Figures 19 - 22 ), and the follower block 337 is fitted to the outer contour of the first pusher control part 335 to move along with the outer contour.

[0095] For example, as Figure 11 shown, the second pusher part 332 includes a protruding part 332A, and the follower block 337 can act on the protruding part 332A to push the second pusher part 332.

[0096] Thus, when the feeding handle 31 is pulled to rotate, through the engagement of the first pusher part 331 and the first engaging part 333, the first pusher part 331 can be pushed forward, and the pushing structure 131 is driven to move forward to achieve feeding; at the same time, through the combination of the first pusher control part 335 and the second pusher control part 336, the second pusher part 332 can be pushed to move, so as to realize the movement of the outer tube 13 relative to the inner tube assembly 12 and achieve the control of the clamping pliers.

[0097] For example, in some examples, the first pusher control part 335 can be in the form of a cam, etc. The outer contour of the cam is a closed curve with a changing radius relative to the rotation center of the cam. This outer contour remains in contact with the follower block 337. When the cam rotates, due to the change in the radius of the cam, the distance between the contact point of the cam and the follower block 337 changes, causing the follower block 337 to move back and forth. When the cam rotates in the direction of increasing radius, the follower block 337 is pushed backward (to the right in the figure). At this time, due to the pulling force of the tension spring 340 (introduced later), the second pusher part 332 also moves backward, and the clamping pliers tend to gradually open; when the cam rotates in the direction of decreasing radius, the follower block 337 is pushed forward (to the left in the figure). Since the pushing force of the compression spring 338 is greater than the pulling force of the tension spring 340, the second pusher part 332 moves forward, and the clamping pliers tend to gradually close.

[0098] For example, Figure 13 shows a schematic diagram of the radius change curve of the first pusher control part, where the abscissa represents the rotation angle of the first pusher control part 335, and the ordinate represents the radius change of the curve guiding track. As Figure 13As shown, the curve of the curve guiding track includes a curve portion with a gradually increasing radius and a curve portion with a gradually decreasing radius, so that the follower block 337 can push the second pushing portion 332 forward or backward respectively. For example, during one clamping process of the feeding handle 31 (i.e., pressing the feeding handle 31 once in the same direction), the follower block 337 can first move forward to push the second pushing portion 332 to control the outer tube assembly 12 to move towards the distal end to semi-close the ligating clip. After that, the follower block 337 moves backward, and the second pushing portion 332 and the outer tube assembly 12 retract to open the ligating clip.

[0099] For example, in some embodiments, as Figure 11 shown, the handle base 30A includes a compression spring 338. The two ends of the compression spring 338 are respectively connected to the follower block 337 and the handle base 30A to provide a thrust force to the follower block 337 to maintain the stability and operability of the follower block 337.

[0100] For example, as Figure 11 shown, the handle base 30A further includes a tension spring 340. The two ends of the tension spring 340 are respectively connected to the second pushing portion 332 and the handle base 30A to provide a pulling force to the second pushing portion 332 to maintain the stability and operability of the second pushing portion 332.

[0101] For example, in some embodiments, as Figure 1 and Figure 2 shown, the handle assembly 30 further includes a clamping handle 32. The clamping handle 32 is configured to be connected to the second pushing portion 332 to control the movement of the second pushing portion 332 in the axial direction, so as to control the relative movement of the outer tube assembly 12 relative to the inner tube assembly 11 in the axial direction, so that the outer tube assembly 12 can abut against the clip applicator and control the clip applicator to close or open.

[0102] For example, Figure 14 shows an exploded schematic view of a part of the handle assembly 30. As Figure 14 shown, the second pushing portion 332 includes a pushing protrusion 339, such as a pushing pin. The clamping handle 32 includes a clamping control portion 321 that cooperates with the pushing protrusion 339. The clamping handle 32 is configured to be driven to control the clamping control portion 321 to push the pushing protrusion 339 to control the movement of the second pushing portion 332 in the axial direction, and further control the relative movement of the outer tube assembly 12 relative to the inner tube assembly 11 in the axial direction, so that the outer tube assembly 12 can abut against the clip applicator and control the clip applicator to close.

[0103] For example, the thrust force provided by the compression spring 338 is greater than the pulling force provided by the tension spring 340. Thus, the follower block 337 can fully abut against the protrusion 332A of the second pushing portion 332 and is controlled by the first push tube control portion 335, which is beneficial to the stability and operability of the structure.

[0104] For example, in some embodiments, the clip applicator may further have a bending function and a rotating function, which will be introduced in detail below.

[0105] For example, as Figure 3 shown, the inner tube assembly 11 includes at least a first portion 111 and a second portion 112. The first portion 111 and the second portion 112 are rotatably connected, for example, hinged, and configured to be able to rotate relative to each other along a first rotation axis Y1 under control. For example, the first portion 111 and the second portion 112 are arranged in the axial direction (the first direction R1 in the figure). For example, the extending direction of the first rotation axis Y1 is different from the axial direction. For example, the first rotation axis is along the second direction R2 in the figure, perpendicular to the first direction R1.

[0106] As Figures 1 - 3 shown, the jaw assembly 20 is connected to the distal end 10B of the tube body assembly 10. The first portion 111 is closer to the distal end 10B, that is, closer to the jaw assembly 20, than the second portion 112. At this time, the jaw assembly 20 is connected to the first portion 111.

[0107] As Figure 1 and Figure 2 shown, the handle assembly 30 is connected to the proximal end 10A of the tube body assembly 10 and includes a bending control knob 50. The bending control knob 50 is configured to control the relative rotation of the first portion 111 and the second portion 112, that is, to control the bending of the first portion 111 relative to the second portion 112. For example, the bending control knob 50 can control the first portion 111 and the second portion 112 to bend in a plane perpendicular to the second direction R2.

[0108] For example, the inner tube assembly 11 further includes a third portion 113. The first portion 111, the second portion 112, and the third portion 113 are arranged in sequence in the axial direction, for example, in sequence from the distal end to the proximal end. The second portion 112 and the third portion 113 are rotatably connected, for example, hinged. The inner tube assembly 11 is configured as follows: the first portion 11 rotates relative to the second portion 112 about the first rotation axis Y1, and the second portion 112 rotates relative to the third portion 113 about a second rotation axis Y2. The second rotation axis Y2 is parallel to the first rotation axis. Thereby, the bending range of the inner tube assembly 10 can be increased.

[0109] For example, through the above settings, the tube body assembly can at least achieve left and right bending from -30° to +30°. In some examples, it can achieve left and right bending from -40° to +40°, left and right bending from -50° to +50°, or a larger angle range of bending.

[0110] For example, the first part 111 of the inner tube assembly 11 includes a distal component connected to the clip applicator, having various structures for connecting to the clip applicator and the cutter. The second part 112 is a bent structure, and the third part 113 is a straight inner tube. The straight inner tube can accommodate a feeding assembly 13, etc., for accommodating ligating clips, which will be introduced in detail later.

[0111] For example, as Figure 3 shown, the outer tube assembly 13 correspondingly includes a first part 121, a second part 122, and a third part 123. The first part 121, the second part 122, and the third part 123 are arranged in sequence along the axial direction, for example, arranged in sequence from the distal end to the proximal end, and are respectively in corresponding positions with the first part 111, the second part 112, and the third part 113 of the inner tube assembly 11 to achieve corresponding bending operations. The first part 121 and the second part 122 are rotatably connected, for example, hinged, and the second part 122 and the third part 123 are rotatably connected, for example, hinged.

[0112] For example, the first part 121 of the outer tube assembly 13 can serve as an outer tube pusher, mainly used to push the clip applicator and the cutter 23 at the distal end to achieve the opening and closing of the clip applicator and the cutting operation of the cutter 23; the second part 122 can serve as an outer tube hinge for achieving the bending operation; the third part 113 is a straight outer tube, and its length along the axial direction is relatively long, serving as the main connecting tube body between the clip applicator and the handle assembly 30.

[0113] For example, in some embodiments, as Figure 2 shown, the tube body assembly 10 further includes at least one bending connection assembly 14 connecting the first part 111 and the bending control knob 50. The bending control knob 50 is configured to control the displacement of the at least one bending connection assembly 14 along the axial direction of the tube body assembly 10 to control the rotational operation between the first part 111 and the second part 112, that is, to control the bending of the first part 111 relative to the second part 112. For example, it also controls the rotational operation between the second part 112 and the third part 113, that is, to control the bending of the second part 112 relative to the third part 113.

[0114] For example, in some examples, as Figure 2As shown, at least one bending connection component, the bending connector 14, includes a first bending connector 141 and a second bending connector 142. The first bending connector 141 and the second bending connector each include opposite first ends 14A and second ends 14B. The first ends 14A of the first bending connector 141 and the second bending connector 142 are respectively connected to opposite sides of the first part 111, for example, hinged to opposite sides of the first part 111. For example, opposite sides of the first part 111 each have a hinge hole 111A to facilitate hinging to the first bending connector 141 and the second bending connector 142 through pins. For example, the second ends 14B of the first bending connector 141 and the second bending connector 142 are respectively connected to different positions of the bending control knob 50. The bending control knob 50 is configured to control the relative movement of the first bending connector 141 and the second bending connector 142 along the axis by rotation, so as to control the rotational operation of the first part 111 and the second part 112, that is, to control the bending of the first part 111 relative to the second part 112, and the rotational operation between the second part 112 and the third part 113, that is, to control the bending of the second part 112 relative to the third part 113.

[0115] For example, in some embodiments, the first bending connector 141 and the second bending connector 142 may be in the form of bending wires, bending ropes, bending sheets, etc., and the embodiments of the present disclosure do not make specific limitations on this.

[0116] For example, in some examples, the first ends 14A of the first bending connector 141 and the second bending connector 142 may be respectively connected to opposite sides of the inner side of the first part 111. At this time, the first bending connector 141 and the second bending connector 142 are located inside the inner tube assembly 11; in other examples, the first ends 14A of the first bending connector 141 and the second bending connector 142 may be respectively connected to opposite sides of the outer side of the first part 111. At this time, the first bending connector 141 and the second bending connector 142 are located between the inner tube assembly 11 and the outer tube assembly 12.

[0117] For example, when the bending control knob 50 controls a relatively large relative movement of the first bending connector 141 and the second bending connector 142, the first part 111 and the second part 112 rotate relative to each other, and the second part 112 and the third part 113 also rotate relative to each other, so as to achieve a relatively large-angle bending; when the bending control knob 50 controls a relatively small relative movement of the first bending connector 141 and the second bending connector 142, the first part 111 and the second part 112 rotate relative to each other, and the second part 112 and the third part 113 may or may not rotate relative to each other. At this time, a relatively small-angle bending can be achieved.

[0118] For example, Figure 15Shows an exploded schematic view of a partial structure within the handle assembly 30 and shows a partial structure of the bending control knob 50, such as Figure 15 As shown, the bending control knob 50 includes a connector control portion 143 and a bending operation portion C. The bending operation portion C can be rotated to control the rotational state of the connector control portion 143. The connector control portion 143, for example, takes the form of a disc. The connector control portion 143 includes a first sliding guide track 143A and a second sliding guide track 143B. The second ends of the first bending connector 141 and the second bending connector 142 are respectively connected to the first sliding guide track 143A and the second sliding guide track 143B. The bending control knob 50 is configured to control the sliding of the first bending connector 141 and the second bending connector 142 on the first sliding guide track 143A and the second sliding guide track 143B by rotation, so as to control the relative movement of the first bending connector 141 and the second bending connector 142 along the axial direction.

[0119] For example, in some embodiments, such as Figure 15 As shown, the first bending connector 141 and the second bending connector 142 are respectively connected to the first sliding guide track 143A and the second sliding guide track 143B through a first sliding seat 144 and a second sliding seat 145. The bending control knob 50 is configured to control the sliding of the first sliding seat 144 and the second sliding seat 145 on the first sliding guide track 143A and the second sliding guide track 143B by rotation, so as to control the relative movement of the first bending connector 141 and the second bending connector 142 along the axial direction.

[0120] For example, the opposite ends of the first sliding seat 144 and the second sliding seat 145 are respectively connected to the bending connector and the sliding guide track. For example, in the Figure 15 example, the overall extending direction of the first sliding seat 144 and the second sliding seat 145 is perpendicular to the extending direction of the first bending connector 141 and the second bending connector 142. The upper ends of the first sliding seat 144 and the second sliding seat 145 are respectively fixedly connected to the first bending connector 141 and the second bending connector 142. The lower ends of the first sliding seat 144 and the second sliding seat 145 are respectively slidably connected to the first sliding guide track 143A and the second sliding guide track 143B.

[0121] For example, the first sliding guide track 143A and the second sliding guide track 143B are in the form of sliding grooves. At this time, the lower ends of the first sliding seat 144 and the second sliding seat 145 are respectively sliding protrusions that cooperate with the sliding grooves.

[0122] For example, in some embodiments, the first sliding guide track 143A and the second sliding guide track 143B extend along the axial direction and the direction angled with respect to the axial direction respectively and simultaneously, that is, the first sliding guide track 143A and the second sliding guide track 143B do not entirely extend along the axial direction but have an axial extension component.

[0123] For example, in some embodiments, as Figure 15 shown, the first sliding guide track 143A and the second sliding guide track 143B are arc-shaped, such as an arc-shaped with a varying radius, and this arc shape has at least two different radii along its extending direction, such as a variety of different radii. The arc shapes of the first sliding guide track 143A and the second sliding guide track 143B are substantially the same, but are arranged oppositely. For example, the arc shapes of the first sliding guide track 143A and the second sliding guide track 143B gradually increase in radius in the clockwise or counterclockwise direction, Figure 15 and it is shown in [reference] that the arc shapes of the first sliding guide track 143A and the second sliding guide track 143B gradually increase in radius in the clockwise direction. For example, in the clockwise direction, the starting points of the first sliding guide track 143A and the second sliding guide track 143B are located at the middle part of the connector control part 143, and the ending points are located at the edge part of the connector control part 143. The arc shapes of the first sliding guide track 143A and the second sliding guide track 143B gradually increase in radius from the starting point to the ending point in the clockwise direction. Thus, when the bending control knob 50 rotates, the relative movement of the first bending connector 141 and the second bending connector 142 can be made stable and uniform, and the relative movement is larger within a limited space to achieve a large range of bending.

[0124] For example, in some embodiments, as Figure 16 shown, the handle assembly 30 may further include a first motion guide plate 146 and a second motion guide plate 147. The first motion guide plate 146 and the second motion guide plate 147 respectively include a limit track extending along the axial direction. The first slide seat 144 and the second slide seat 145 are respectively connected to the connector control part 143 through the first motion guide plate 146 and the second motion guide plate 147 to limit the axial movement distance of the first slide seat 144 and the second slide seat 145.

[0125] For example, as Figure 16As shown, the limiting track of the first movement guide plate 146 includes a first guide hole 146A extending along the axial direction. The first movement guide plate 146 further includes a first fixing portion 146B. The first sliding seat 144 passes through the first guide hole 146A and is connected to the first sliding guide track 143A of the control portion. The limiting track of the second movement guide plate 147 includes a second guide hole 147A extending along the axial direction. The second movement guide plate 147 further includes a second fixing portion 147B. The second sliding seat 145 passes through the second guide hole 147A and is connected to the second sliding guide track 143B of the connecting member control portion 143. The first fixing portion 146B is slidably connected to the second sliding guide track 143B, and the second fixing portion 147B is slidably connected to the first sliding guide track 143A. Thus, the first sliding seat 144 and the second sliding seat 145 are limited to move along the axial direction to avoid sliding deviation. Moreover, each movement guide plate is simultaneously arranged on two sliding guide tracks, providing higher stability.

[0126] For example, in some embodiments, as Figure 1 shown, the handle assembly 30 includes a handle base 30A and a rotating head 40 rotatably connected to the handle base 30A. At least a part of the rotating head 40 is sleeved on the tube assembly 10 and is configured to be able to controllably drive the overall rotation of the tube assembly 10 and the jaw assembly 20 relative to the handle base 30A about a third rotation axis Y3. The third rotation axis Y3 is parallel to or coincides with the axial direction of the tube assembly 10, that is, the third rotation axis Y3 is parallel to the first direction R1.

[0127] That is, the rotating head 40 is used to control the axial rotation of the jaw body portion including the tube assembly 10 and the jaw assembly 20 without angular limitation. When the entire jaw body rotates, all parts including the tube assembly 10 and the jaw assembly 20 rotate together. At any rotated angle, the clamping pliers can be operated to bend without being restricted by the rotational movement. For example, when the entire jaw body rotates 360°, the operator can arbitrarily select the clamping angle of the jaw assembly through the bending and rotating operations of the applicator, achieving better clamping of blood vessels or tissues at a better position.

[0128] For example, in some embodiments, as Figure 1 and Figure 2 shown, the bending control knob 50 is arranged on one side of the rotating head 40. For example, at least a part of the rotating head 40 is sleeved outside the outer tube assembly 12 and is fixedly connected to the tube assembly 10. For example, as Figure 16 and Figure 17 shown, the proximal ends of the bending connecting member 14 and the outer tube assembly 12 respectively have holes O1 and O2. The rotating head 40 can be fixedly connected to the inner tube assembly 11 by pins 15 passing through the holes O1 and O2 respectively, thereby keeping the proximal and distal ends of the inner tube assembly 11 fixed all the time.

[0129] For example, the holes O1 and O2 have axial extension trajectories for mating with the pins 15, enabling the bending connector 14 and the outer tube assembly 12 to axially move along the axial trajectories defined by the holes O1 and O2. Thus, the bending connector 14 can be bent by relative movement with the inner tube assembly 11, and the outer tube assembly 12 can control the clamping pliers and the cutting knife by relative movement with the inner tube assembly 11. At the same time, the lengths of the holes O1 and O2 define the movement ranges of the bending connector 14 and the outer tube assembly 12.

[0130] For example, as Figure 16 shown, the tube body assembly 10 is rotatably connected to the first push tube structure 33, for example, rotatably connected to the third rotating portion 331A of the first push tube structure 33, so as to facilitate the overall rotation of the tube body assembly 10 and the jaw assembly 20 relative to the handle base 30A. For example, as Figure 17 shown, the rotating head 40 includes a first rotating portion 35, and the tube body assembly 10 is also rotatably connected to the second pushing portion 332, for example, rotatably connected to the second rotating portion 332B of the second pushing portion 332 through the first rotating portion 35, so as to facilitate the overall rotation of the tube body assembly 10 and the jaw assembly 20 relative to the handle base 30A.

[0131] For example, as Figure 18 shown, the handle assembly 30 further includes a connecting block 34. The distal end of the connecting block 34 is connected to the outer tube assembly 12, and the proximal end of the connecting block 34 is connected to the first rotating portion 35. Combining Figure 8 , for example, fixedly connected to the first rotating portion 35 through a pin 35A and connected to the outer tube assembly 12 through an outer tube card slot 34A. Thus, when the first rotating portion 35 rotates with the second rotating portion 332B of the second pushing portion 332, the tube body assembly 10 and the jaw assembly 20 can be driven to rotate simultaneously.

[0132] For example, as Figure 8 shown, the first rotating portion 35 also at least partially sleeved outside the third rotating portion 331A of the first push tube structure 33 and can rotate relative to the third rotating portion 331A of the first push tube structure 33, which helps the overall rotation of the tube body assembly 10 and the jaw assembly 20 relative to the handle base 30A.

[0133] For example, Figures 19 - 22 shows a schematic diagram of the feeding to clamping process of the applicator provided by at least one embodiment of the present disclosure.

[0134] For example, as Figure 19As shown, the clip applier is in an initial state, and various structures such as the feeding handle 31 and the clamping handle 32 are all in an initial state. At this time, the conjoined ligation clip is accommodated in the feeding assembly 13, and each ligation clip accommodated in the feeding assembly 13 is in a semi-closed state. There is no ligation clip in the clip applier, and the clip applier is fully open.

[0135] For example, Figure 20 As shown, when the feeding handle 31 is pulled to the first position, for example, it is pulled counterclockwise to the position shown in the figure, the feeding handle 31 drives the first pushing part 331 and the second pushing part 332 at the same time, and the feeding assembly 13 starts feeding, and the first push tube control part 335 (for example, a cam) rotates in the direction of decreasing radius, and the follower block 337 is pushed forward (left side in the figure), so that the second pushing part 332 moves forward, and the clamping forceps shows a tendency to gradually close, and finally presents a semi-closed state. At this time, the ligation clip is also in a semi-closed state, which is the state when the ligation clip is accommodated in the feeding assembly 13. Therefore, the state of the clamping forceps adapts to the shape of the ligation clip, so as to stably fix the ligation clip to the clamping forceps to prevent the ligation clip from falling off.

[0136] For example, Figure 21 As shown, continue to move the feeding handle 31 to the second position, for example, counterclockwise to the position shown in the figure, the feeding handle 31 simultaneously drives the first pushing portion 331 and the second pushing portion 332, the feeding assembly 13 feeds the material into place, that is, into the clamp, the first push tube control portion 335 (such as a cam) rotates in the direction of increasing the radius, and the follower block 337 is pushed backward (to the right side in the figure), so that the second pushing portion 332 moves backward, and the clamp shows a tendency to gradually open, and finally presents an open state, and accordingly, the ligation clamp is also in an open state.

[0137] For example, Figure 22 As shown, since the ligation clip has been pushed to the clamp and the clamp is in an open state, the ligation clip is in a ready-to-use state. At this time, the ligation clip can be operated to place the ligation clip on the blood vessel or tissue to be clamped, and the clamping handle 32 is turned, so that the clamping control part 321 pushes the pushing protrusion 339 to control the second pushing part 332 to move forward, so that the outer tube assembly 12 can resist the clamp and control the clamp to close; at the same time, the cutting knife 23 is driven to cut the connecting piece between adjacent ligation clips to disconnect the adjacent ligation clips. In this way, the linkage of the cutting action and the clamping action is realized, that is, one action can realize the cutting action and the clamping action at the same time, without multiple operations.

[0138] This achieves one-time feeding to clamping operations.

[0139] Afterwards, the feeding handle 31 can be manually returned to the initial position, and the clamping handle 32 can be returned to the initial position by relying on the pulling force of the tension spring 340 to wait for the next operation.

[0140] In summary, in the embodiments of the present disclosure, when the ligating clip is pushed to the clip applicator, the ligating clip is in a semi-closed state, and the clip applicator is also in a semi-closed state accordingly to adapt to the shape of the ligating clip and fix it to the clip applicator. After the ligating clip is transported in place, the clip applicator drives the ligating clip to open, and when needed, the closing handle is used to achieve closure. The actions of feeding, the clip applicator being semi-closed, the feeding being in place, and the clip applicator opening have a strict logic and timing control. In the traditional technology, this series of actions are solidified into one, and the user can only complete the operation from the start to closing the clip applicator at one time. Once the clip applicator starts to close, it can only continue to close and cannot open the clip applicator again. When doctors actually use it, they often need to temporarily fine-tune the closing position. However, if the clip applicator has already been partially closed, it is difficult to move it again, which is rather passive. The technical solution provided by the embodiments of the present disclosure can perfectly solve this problem. Through the linkage structure on the feeding handle, the occurrence timing of this series of actions is linked and controlled. The user does not need to master complex control logics, but only needs to squeeze the feeding handle to the end and then use the closing handle to close the ligating clip.

[0141] In addition, in the embodiments of the present disclosure, the feeding operation and the closing operation are linked through the feeding handle. With the design of the first push tube control part, when the feeding is completed, the clip applicator automatically opens, and thus the ligating clip also automatically opens. At this time, before the closing handle completely closes the ligating clip, the closing handle can still move freely back and forth, so that the opening degree of the ligating clip can be controlled, and the ligating clip is always limited at the clip applicator and will not fall off. The user can freely operate in this state.

[0142] On the other hand, for a continuous clip applier, generally the ligating clips need to be loaded into the applicator at the manufacturer. Whether it is a traditional single ligating clip or the continuous ligating clip used in the embodiments of the present disclosure, they are in a compressed state, that is, a semi-closed state, inside the applicator. Limited by the industry standards of laparoscopic surgery, the diameter of surgical instruments cannot exceed several specific diameters such as 5 mm, 8 mm or 10 mm, and the diameter of the pipeline of the applicator cannot be enlarged arbitrarily. As a result, the ligating clips are in a compressed state, that is, a semi-closed state, throughout the process from completion of assembly to use. Since most ligating clips are made of polymer materials and have the characteristics of aging and creep, they will lose elasticity in a period of several months to several years. When a doctor uses the applicator, the loaded ligating clips are almost solidified in the semi-closed state and cannot return to the fully open state by their own elasticity. At this time, the applicator has to be used to open the ligating clips. The traditional applicator uses the movement of the clip applier to push open the ligating clip, but this method has low reliability and often fails, resulting in the ligating clip not being able to open. Even when the clip applier is opened, the ligating clip may not open, leading to the ligating clip detaching and falling into the patient's body. However, the applicator provided by the embodiments of the present disclosure does not pose a risk of the ligating clip falling. The ligating clip in the semi-closed state is opened by the thrust transmitted through the first push tube structure. That is, the first push tube structure passes through the feeding assembly and the continuous ligating clip, and transmits the thrust to the ligating clip at the forefront (distal end), so that the ligating clip is gradually opened, and this operation is more stable and reliable.

[0143] In addition, in the embodiments of the present disclosure, during the pushing and clamping process of the ligating clip, its tail end is always connected and restricted by the ligating clip behind, which also avoids the surgical safety risk caused by the ligating clip falling off from the clip applier.

[0144] On the other hand, the embodiments of the present disclosure can jointly push the continuous ligating clip, combining multiple original parts into one. Utilizing the connection characteristics of the continuous ligating clip itself, the applicator is increased with bending and rotating functions. At the bending position, there is no need to set up a transmission structure or a positioning structure for the ligating clip anymore, which cannot be achieved by the single-piece ligating clip; in addition, it can also help the operator bend the clip applier to enter some narrow gaps and curved places to apply the ligating clip, increasing the freedom of movement of the instrument, greatly improving the convenience of the doctor's operation and saving the operation time.

[0145] There are also the following points to note:

[0146] (1) The drawings of the embodiments of the present disclosure only relate to the structures involved in the embodiments of the present disclosure, and other structures can refer to the general design.

[0147] (2) For the sake of clarity, in the drawings used to describe the embodiments of the present disclosure, the thickness of the layer or region is enlarged or reduced, that is, these drawings are not drawn according to the actual scale.

[0148] (3) Without conflict, the embodiments of the present disclosure and the features in the embodiments may be combined with each other to obtain new embodiments.

[0149] The above are only specific implementation manners of the present disclosure, but the protection scope of the present disclosure is not limited thereto. The protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims

1. A bendable clip applier, characterized in that: include: A tube assembly having a proximal end and a distal end, comprising an inner tube assembly, wherein the inner tube assembly comprises at least a first portion and a second portion, the first portion and the second portion being rotatably connected; a jaw assembly connected to the distal end of the tube assembly and connected to the first portion; and The handle assembly is connected to the proximal end of the tube assembly and includes a bending control button, wherein the bending control button is configured to control the bending of the first part relative to the second part.

2. The clip applier according to claim 1, wherein: The tube body assembly also includes at least one bending connection assembly connecting the first part and the bending control button, and the bending control button is configured to control the axial displacement of the at least one bending connection assembly along the tube body assembly to control the bending of the first part relative to the second part.

3. The clip applier according to claim 2, characterized in that The at least one bending connection assembly includes a first bending connection member and a second bending connection member, wherein the first bending connection member and the second bending connection member include a first end and a second end opposite to each other, The first ends of the first bending connecting member and the second bending connecting member are respectively connected to opposite sides of the first portion, The second ends of the first bending connection member and the second bending connection member are respectively connected to different positions of the bending control button, and the bending control button is configured to control the relative movement of the first bending connection member and the second bending connection member along the axial direction by rotation to control the bending of the first part relative to the second part.

4. The clip applier according to claim 3, wherein: The turning control button includes a connecting member control portion, and the connecting member control portion includes a first sliding guide track and a second sliding guide track. The second ends of the first bending connection member and the second bending connection member are respectively connected to the first sliding guide track and the second sliding guide track, and the bending control button is configured to control the sliding of the first bending connection member and the second bending connection member on the first sliding guide track and the second sliding guide track by rotation to control the relative movement of the first bending connection member and the second bending connection member along the axial direction.

5. The clip applier according to claim 4, characterized in that The first bending connection member and the second bending connection member are connected to the first sliding guide track and the second sliding guide track through a first sliding seat and a second sliding seat respectively. The bending control knob is configured to control the sliding of the first slide seat and the second slide seat on the first sliding guide track and the second sliding guide track by rotation, so as to control the relative movement of the first bending connection member and the second bending connection member along the axial direction.

6. The clip applier according to claim 4 or 5, characterized in that The first sliding guide track and the second sliding guide track extend simultaneously along the axial direction and in a direction which is angled with the axial direction, respectively.

7. The clip applier according to claim 6, wherein: The first sliding guide track and the second sliding guide track are in an arc shape, and the arc shape has at least two different radii along the extension direction thereof.

8. The clip applier according to claim 7, wherein: The arc shapes of the first sliding guide track and the second sliding guide track gradually increase in radius in a clockwise or counterclockwise direction.

9. The clip applier according to claim 5, wherein: The handle assembly further includes a first motion guide plate and a second motion guide plate. The first motion guide plate and the second motion guide plate respectively include limiting tracks extending along the axial direction, and the first slide seat and the second slide seat are respectively connected to the connecting member control part through the first motion guide plate and the second motion guide plate to limit the movement distance of the first slide seat and the second slide seat along the axial direction.

10. The clip applier of claim 9, wherein: The limiting track of the first motion guide plate includes a first guide hole extending along the axial direction, and the first slide seat is connected to the first sliding guide track of the connecting member control part through the first guide hole. The limiting track of the second motion guide plate includes a second guide hole extending along the axial direction, and the second slide seat passes through the second guide hole and is connected to the second sliding guide track of the connecting member control part; The first motion guide plate further includes a first fixing portion, and the second motion guide plate further includes a second fixing portion. The first fixing portion is slidably connected to the second sliding guide track, and the second fixing portion is slidably connected to the first sliding guide track.

11. The clip applier according to any one of claims 1 to 5, characterized in that: The inner tube assembly further includes a third part, the first part, the second part and the third part are arranged in sequence along the axial direction, the second part and the third part are rotatably connected, and the inner tube assembly is configured as follows: The first part rotates relative to the second part around a first rotation axis, and the second part rotates relative to the third part around a second rotation axis, wherein the second rotation axis is parallel to the first rotation axis.

12. The clip applier according to any one of claims 1 to 5, characterized in that: The handle assembly also includes a handle base and a rotating head connected to the handle base. Wherein, at least a portion of the rotating head is sleeved on the tube body assembly, the rotating head is configured to rotate around the axis of the tube body assembly, and is configured to controllably drive the tube body assembly and the jaw assembly to rotate around a third rotation axis relative to the handle base, and the third rotation axis is parallel to or coincides with the axial direction of the tube body assembly.

13. The clip applier of claim 12, wherein: The turning control button is arranged on one side of the rotating head.

14. The clip applier of claim 12, wherein: The tube body assembly further comprises an outer tube assembly sleeved on the outer side of the inner tube assembly, and at least a portion of the rotating head is sleeved on the outer side of the outer tube assembly and fixedly connected to the tube body assembly.

15. The clip applier of claim 12, wherein: The handle assembly also includes a first push tube structure arranged in the handle base, the rotating head includes a first rotating part, the tube body assembly is connected to the first push tube structure, and the first rotating part is configured to rotate relative to the first push tube structure, so that the tube body assembly and the jaw assembly rotate as a whole around the axis of the tube body assembly.

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