Continuous clip applier

Abstract

The utility model discloses a continuous clip applier. The continuous clip applier comprises a tube body assembly, a jaw assembly, a cutting knife and a handle assembly, the tube body assembly is provided with a near end and a far end and comprises an inner tube assembly and an outer tube assembly arranged on the outer side of the inner tube assembly in a sleeving mode, and the inner tube assembly and the outer tube assembly are controlled to move relatively in the axis direction of the tube body assembly; the jaw assembly is connected to the far end of the tube body assembly and comprises a first clamp head and a second clamp head which are connected to the inner tube assembly and arranged oppositely. The cutting knife is movably connected to the far end of the inner tube assembly; the handle assembly is connected to the near end of the tube body assembly and is configured to control the inner tube assembly and the outer tube assembly to move relatively in the axis direction, so that the outer tube assembly abuts against the first forceps head and the second forceps head, and closing and opening of the first forceps head and the second forceps head and movement of the cutting knife are controlled. The clip applier is simple to operate, easy to control and safer to use.

Description

Technical Field

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

[0002] Laparoscopy, endoscopy, and other minimally invasive surgical techniques enable surgeons to perform complex surgeries inside the body through small incisions. Many surgical procedures require ligating blood vessels or tissues during the surgery. 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, a surgeon may wish to temporarily ligate a blood vessel to reduce the blood flow to the surgical site during the surgery. In other cases, a surgeon may wish to permanently ligate a blood vessel.

[0003] Ligation of blood vessels or tissues can be achieved by using ligating clips to close or suturing with sutures. Using sutures for ligation requires complex operations on the needle and suture material to form the knots required for ligation. 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 closing blood vessels or tissues with ligating clips is simpler and more reliable, and an applier can be used to control the closing and opening actions of the ligating clips.

[0004] However, in traditional operating methods, only one ligating clip can be picked up and clamped each time. If multiple ligating clips are needed, the applier needs to be removed from the cavity, pick up the ligating clips again outside the cavity, and then re-insert them into the cavity to clamp the ligating clips. Clinically, each surgical procedure often requires several ligating clips. Repeatedly picking up ligating clips greatly reduces the surgical efficiency and increases the surgical risk.

[0005] In some embodiments, a method of continuous clip firing can be used, that is, multiple ligating clips are loaded on an applier, so that the operator can continuously clamp multiple ligating clips without withdrawing the applier from the cavity.

[0006] However, in the current methods of using an applier to control the continuous clip firing, problems often exist. For example, multiple ligating clips are blocked in the track for delivering the ligating clips, resulting in the failure of closing the ligating clips; the deformation of the material of the ligating clip itself easily causes the ligating clip to not be effectively fixed at the clamping jaws of the applier.

[0007] In summary, the existing appliers have several defects in continuous clip firing, and a better structure is needed to safely and reliably deliver and close the ligating clips in sequence, and to minimize the damage to blood vessels. Summary of the Utility Model

[0008] Aiming at the deficiencies of the prior art, the present invention aims to provide a continuous clip applier for delivering and clamping multiple ligating clips, and solve technical problems such as the failure of closing the ligating clips caused by the easy blockage of multiple ligating clips in the delivery track.

[0009] At least one embodiment of the present disclosure provides a continuous firing clip applicator, which includes a tube body assembly, a jaw assembly, a cutting knife, and a handle assembly; the tube body assembly has a proximal end and a distal end, and includes an inner tube assembly and an outer tube assembly sleeved outside the inner tube assembly, wherein the inner tube assembly and the outer tube assembly are configured to move relatively along the axis of the tube body assembly in a controlled manner; the jaw assembly is connected to the distal end of the tube body assembly and includes a first jaw head and a second jaw head that are connected to the inner tube assembly and are oppositely arranged; the cutting knife is movably connected to the distal end of the inner tube assembly; the handle assembly is connected to the proximal end of the tube body assembly and is configured to control the relative movement of the inner tube assembly and the outer tube assembly along the axis direction, so that the outer tube assembly abuts against the first jaw head and the second jaw head respectively, to control the closing and opening of the first jaw head and the second jaw head and the movement of the cutting knife.

[0010] For example, in the clip applicator provided by at least one embodiment of the present disclosure, the jaw assembly includes a first mating surface that cooperates with the outer tube assembly, and the first mating surface is configured to abut against and slide relatively with the outer tube assembly when the outer tube assembly moves relative to the inner tube assembly, so as to realize the closing and opening of the first jaw head and the second jaw head.

[0011] For example, in the clip applicator provided by at least one embodiment of the present disclosure, the cutting knife is rotatably connected to the distal end of the inner tube assembly, and the cutting knife includes a second mating surface, and the second mating surface is configured to abut against and slide relatively with the outer tube assembly when the outer tube assembly moves relative to the inner tube assembly, so as to drive the cutting knife to rotate.

[0012] For example, in the clip applicator provided by at least one embodiment of the present disclosure, the cutting knife includes a first knife body and a second knife body that are opposite to each other, the first knife body and the second knife body are oppositely arranged and rotatably connected to the inner tube assembly, and the first knife body and the second knife body are configured to rotate relative to the inner tube assembly when the outer tube assembly moves relative to the inner tube assembly.

[0013] For example, in the clip applicator provided by at least one embodiment of the present disclosure, the cross-sections of the first knife body and the second knife body along the axis direction are respectively in a V shape, the V shape includes a first linear portion and a second linear portion that are connected to each other, and the second linear portion includes the second mating surface; the end of the first linear portion away from the second linear portion is formed as a cutting portion, and the end of the second linear portion away from the first linear portion is hinged to the inner tube assembly to form the rotational connection.

[0014] For example, in the clip applicator provided by at least one embodiment of the present disclosure, a clearance space is provided between the proximal ends of the first jaw and the second jaw, and the first blade body and the second blade body are configured to rotate within the clearance space when the outer tube assembly moves relative to the inner tube assembly.

[0015] For example, in the clip applicator provided by at least one embodiment of the present disclosure, the first blade body and the second blade body further respectively include blade body limiting portions, the blade body limiting portions are connected to the ends of the second linear portions of the first blade body and the second blade body that are far from the first linear portions, and in a cross-section along the axis direction, the blade body limiting portions and the second linear portions form an obtuse angle.

[0016] For example, in the clip applicator provided by at least one embodiment of the present disclosure, the axis direction is the first direction, the rotation axes of the first blade body and the second blade body extend along the second direction, the first jaw and the second jaw are rotatably connected to the inner tube assembly, the rotation axes of the first jaw and the second jaw extend along the third direction, the first direction is perpendicular to the second direction and perpendicular to the third direction, and the second direction is perpendicular to the third direction.

[0017] For example, in the clip applicator provided by at least one embodiment of the present disclosure, the outer tube assembly includes a push blade structure opposite to the second mating surface, and the push blade structure is configured to abut against the second mating surface when the outer tube assembly moves relative to the inner tube assembly to drive the cutting blade to rotate.

[0018] For example, in the clip applicator provided by at least one embodiment of the present disclosure, the push blade structure includes a protrusion provided on the inner wall of the outer tube assembly, and the protrusion matches the second mating surface.

[0019] For example, the clip applicator provided by at least one embodiment of the present disclosure further includes a feeding assembly and at least two connected ligating clips; the feeding assembly is provided within the inner tube assembly; the at least two connected ligating clips are accommodated within the feeding assembly, and the at least two connected ligating clips are configured to be cut and separated by the cutting blade.

[0020] Compared with the prior art, the beneficial effects of the continuous-firing clip applicator provided by the embodiments of the present disclosure are as follows: The clip applicator provided by at least one embodiment of the present disclosure can be used to push and clamp multiple connected ligating clips. During the pushing process, the tail end of each ligating clip is connected and restricted by the ligating clip behind, avoiding the surgical safety risks caused by the ligating clip falling off, shifting or deforming from the clip applicator. Moreover, the clip applicator can conveniently and efficiently disconnect the multiple connected ligating clips and sequentially perform clamping, improving the operation convenience and reliability of the clip applicator. 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 continuous clip applier provided by at least one embodiment of the present disclosure;

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

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

[0025] Figure 4 A schematic cross-sectional view of a blade body of a multi-shot 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 and adjacent components of the burst clip applier;

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

[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 burst clip applier provided by at least one embodiment of the present disclosure;

[0030] Figure 9 A partial three-dimensional schematic diagram of a feeding assembly of a burst clip applier provided by at least one embodiment of the present disclosure;

[0031] Figure 10 A schematic top view of a feed assembly of a burst clip applier provided in at least one embodiment of the present disclosure;

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

[0033] Figure 12 A schematic diagram of the structure of a feed handle of a burst clip applier provided by at least one embodiment of the present disclosure;

[0034] Figure 13 A schematic diagram of a radius variation curve of a first push tube control portion of a rapid-fire clip applier provided in at least one embodiment of the present disclosure;

[0035] Figure 14 Exploded view of a partial structure of the handle assembly of a continuous-firing clip applier provided by at least one embodiment of the present disclosure;

[0036] Figure 15 Exploded view of a partial structure inside the handle assembly of a continuous-firing clip applier provided by at least one embodiment of the present disclosure;

[0037] Figure 16 Another exploded view of a partial structure of the handle assembly of a continuous-firing clip applier provided by at least one embodiment of the present disclosure;

[0038] Figure 17 Schematic diagram of a partial structure of the handle assembly of a continuous-firing clip applier provided by at least one embodiment of the present disclosure;

[0039] Figure 18 Schematic diagram of a partial structure of the handle assembly of a continuous-firing clip applier provided by at least one embodiment of the present disclosure; and

[0040] Figures 19 - 22 Schematic diagram of the process from one-time feeding to clamping of a continuous-firing clip applier 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. Apparently, 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 protection scope of the present disclosure.

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

[0043] In an embodiment of the present disclosure, the term "proximal" refers to a part of the component or structure involved that is close to the clinician, and the term "distal" refers to a part of the 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 applicator (or ligating forceps) is usually used to carry 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 applicator is controlled outside the body to close the ligating clip.

[0045] At least one embodiment of the present disclosure provides a multi-shot clip applicator, which includes a tube body assembly, a jaw assembly, a cutting blade, and a handle assembly; the tube body assembly has a proximal end and a distal end, and includes an inner tube assembly and an outer tube assembly sleeved outside the inner tube assembly, wherein the inner tube assembly and the outer tube assembly are arranged to move relative to each other controllably along the axis of the tube body assembly; the jaw assembly is connected to the distal end of the tube body assembly and includes a first jaw head and a second jaw head that are connected to the inner tube assembly and are oppositely arranged; the cutting blade is movably connected to the distal end of the inner tube assembly; the handle assembly is connected to the proximal end of the tube body assembly and is configured to control the relative movement of the inner tube assembly and the outer tube assembly along the axis direction, so that the outer tube assembly abuts against the first jaw head and the second jaw head respectively, to control the closing and opening of the first jaw head and the second jaw head and the movement of the cutting blade.

[0046] The multi-shot clip applicator provided by the embodiment of the present disclosure is simple to operate and easy to control, and the outer tube assembly can abut against different parts of the first jaw head and the second jaw head when moving, so as to restrain the first jaw head and the second jaw head, and further restrain the ligating clip inside the jaw assembly, which can avoid the shedding of the ligating clip and is safer to use.

[0047] The multi-shot clip applicator provided by the embodiment of the present disclosure will be described below through several specific examples.

[0048] At least one embodiment of the present disclosure provides a multi-shot clip applicator, Figure 1 showing a perspective structural view of the multi-shot clip applicator, Figure 2 showing an exploded view of the multi-shot clip applicator. As Figure 1 and Figure 2 shown, the multi-shot clip applicator includes a tube body assembly 10, a jaw assembly 20, a handle assembly 30, etc.

[0049] 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. The inner tube assembly 11 and the outer tube assembly 12 can be controlled to move relative to each other along the axis direction (that is, Figure 2relatively move in the first direction R1).

[0050] For example, in some embodiments, the tube body assembly 10 further includes a feeding assembly 13 located within the inner tube assembly 11. The feeding assembly 13 is capable of accommodating at least one ligating clip A, such as accommodating a plurality of ligating clips A, for pushing and use. For example, the feeding assembly 13 houses at least two connected ligating clips, and the at least two connected ligating clips are configured to be separated by a cutter (detailed later).

[0051] 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 the jaw assembly, 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 3 shown, the first jaw 21 and the second jaw 22 of the jaw assembly 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.

[0052] 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. For details, 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.

[0053] As Figure 1 and Figure 2 shown, the handle assembly 30 is connected to the proximal end 10A of the tube body assembly, and is configured to control the outer tube assembly 12 to move relative to the inner tube assembly 11, so that the outer tube assembly 12 can abut against the first jaw 21 and the second jaw 22 through relative movement, such as abutting against different parts of the first jaw 21 and the second jaw 22, to control the closing and opening of the first jaw 21 and the second jaw 22, that is, to control the closing and opening of the jaw assembly.

[0054] 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 at least part of the inner tube assembly 11, the outer tube assembly 12, and the feeding assembly 13 in the tube body assembly 10 along the axial direction of the tube body assembly 10 ( Figure 2relative movement in the first direction R1) to control the feeding assembly 13 to apply ligating clips to the clip applicator (for example, by controlling the movement of at least some components in the feeding assembly 13 relative to the inner tube assembly 11) and / or to control the closing and opening of the jaw assembly (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 implement the feeding process and the clamping process of the ligating clip, realizing 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.

[0055] For example, as Figure 3 shown, the connecting portion 203 includes a first mating surface 203A that mates with the outer tube assembly 12. The first mating surface 203A is configured to be able to abut against 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 realize the closing and opening of the first jaw 21 and the second jaw 22 by the extrusion of the outer tube assembly 12 on the first jaw 21 and the second jaw 22.

[0056] For example, in some embodiments, as Figure 3 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, and the second mating surface 23A is configured to be able to abut against and slide relative to the outer tube assembly 12 when the outer tube assembly 12 moves relative to the inner tube assembly 11, so as to realize the cutting action by the rotation of the cutting blade 23.

[0057] For example, as Figure 3 shown, the cutting blade 23 includes opposite first blade bodies 24 and second blade bodies 25. The first blade bodies 24 and the second blade bodies 25 are symmetrically rotatably connected to the inner tube assembly 11. For example, the first blade bodies 24 and the second blade bodies 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

[0058] For example, Figure 4 shows a schematic axial cross-sectional view of the first blade body 24, or Figure 2 the top view of the first blade body 24 along the second direction R2 in Figure 4 . As Figure 4 shown, the axial cross-sections of the first blade body 24 and the second blade body 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 (i.e., the distal end) of the first linear portion 241 away from the second linear portion 242 is formed as a cutting portion. As Figure 3 shown by the dashed circle in Figure 4The position indicated by reference numeral 244 or a position near it, i.e., the proximal end portion, is hinged to the inner tube assembly 11.

[0059] For example, as Figure 3 shown, the second linear portion 242 includes a second mating surface 23A. For example, Figure 5 shows Figure 3 a top view schematic diagram of the jaw assembly in FIG. along the second direction R2. As Figure 5 shown, when the outer tube assembly 12 moves relatively, the distal inner wall of the outer tube assembly 12 will abut against the second mating surface 23A and slide distally along the second mating surface 23A in the axial direction. Thus, the first blade body 24 and the second blade body 25 can rotate relative to the inner tube assembly 11 about the rotation axis 251 to perform a cutting action on the component to be cut in the jaw assembly (for example, the connecting portion between ligating clips, which will be introduced in detail later).

[0060] For example, as Figure 5 shown, the distal end of the inner wall of the outer tube assembly 12 can be chamfered, as shown by the dotted circle in Figure 5 . This helps to have a larger contact surface when the outer tube assembly 12 moves relative to the inner tube assembly and abuts against the surface of the clip applicator, avoiding local excessive pressure and fully squeezing the first jaw 21 and the second jaw 22 of the clip applicator to close the ligating clip.

[0061] For example, Figure 6 shows Figure 3 a top view schematic diagram of the jaw assembly in FIG. along the third direction R3. As Figure 6 shown, the connecting portion 203 includes a blade body avoidance space 26 located inside the connecting portion 203, and the first blade body 24 and the second blade body 25 are located at the blade body avoidance space 26. For example, the blade body avoidance spaces 26 of the first jaw 21 and the second jaw 22 are respectively grooves whose profiles are similar to the outer shapes of the first blade body 24 and the second blade body 25 but whose sizes are slightly larger than those of the first blade body 24 and the second blade body 25. Thus, the first blade body 24 and the second blade body 25 have sufficient rotation space and can fully act on the component to be cut (for example, the connecting member between ligating clips) located between the first jaw 21 and the second jaw 22 to achieve a sufficient cutting effect.

[0062] For example, as Figure 3 and Figure 4 shown, the first blade body 24 and the second blade body 25 also respectively include blade body limiting portions 243. The blade body limiting portions 243 are connected to the ends of the second linear portions 242 of the first blade body 24 and the second blade body 25 that are far from the first linear portion 241. And in cross-section, as Figure 4 shown, the blade body limiting portion 243 forms an obtuse angle a with the second linear portion 242.

[0063] For example, the blade limit portion 243 is located between the inner tube assembly 11 and the outer tube assembly 12. When the first blade body 24 and the second blade body 25 are in an open state (non-cutting state), the blade limit portion 243 can be against the inner tube assembly 11. When the first blade body 24 and the second blade body 25 are in a closed state (cutting state), the blade limit portion 243 can gradually turn to 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 blade body 24 and the second blade body 25, so as to make the control of the first blade body 24 and the second blade body 25 safer.

[0064] For example, Figure 4 As 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 blade body 24 and the second blade body 25 can be fully turned to the part to be cut in the clamp by a small range rotation of the first blade body 24 and the second blade body 25 to achieve cutting.

[0065] For example, in some embodiments, Figure 3 As 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.

[0066] 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. The push knife structure 28 is configured to abut against the second mating surface 23A when the outer tube assembly 12 moves relative to the inner tube assembly 11, so as to drive the cutting knife 23 to rotate relative to achieve the cutting action of the conjoined ligation clamp.

[0067] For example, the pusher structure 28 includes a protrusion disposed on the inner wall of the outer tube assembly 12. The protrusion matches the second mating surface 23A and can control the cutting action of the cutting blade 23. For example, the protrusion can be a block structure fixed to the inner wall of the outer tube assembly 12, such as a pusher block or a pin formed by welding or assembly; or, the protrusion can also be a structure formed by stamping or other means and integrated with the outer tube assembly 12. In this case, the outer wall (appearance) of the outer tube assembly 12 has a concave structure, such as Figure 3 and Figure 6 shown.

[0068] For example, Figure 7 A one-piece ligation clip is shown, such as Figure 7As shown, the conjoined ligating clip includes a plurality of ligating clips A. Each ligating clip A includes a first beam A1, a second beam A2, and an elastic connecting portion A3 connecting the first beam A1 and the second beam A2. The elastic connecting portion A3 is configured to allow the first beam A1 and the second beam A2 to have an open state ( Figure 7 shown in the open state) and a closed state through elastic deformation. Each ligating clip A has a hollow portion A31 at the elastic connecting portion A3. The hollow portion A31 is in the form of a crescent or a strip, for example, to facilitate the corresponding elastic deformation of the elastic connecting portion A3 when achieving the open state and the closed state.

[0069] For example, each ligating clip A can be controlled to close on blood vessels or tissues to achieve the effects of hemostasis and closure.

[0070] For example, as Figure 7 shown, every two adjacent ligating clips A are connected by a connecting member B, and the connection methods of two adjacent ligating clips A are basically the same. For example, the connecting member B can be made of a flexible material, such as silicone rubber, thermoplastic elastomer (TPE), or cotton thread, etc. Or, the connecting member B can also be made of a hard material, such as plastic, etc.

[0071] For example, as Figure 7 shown, the first beam A1 includes a first boss A4, and the first boss A4 can be used for limiting in the applicator. When the ligating clip is pushed to the clamping forceps of the applicator, the first boss A4 can also be used for positioning in the jaws of the clamping forceps. 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 closure more stable. In addition, when the ligating clip is pushed to the jaw assembly, the second boss A5 is used for limiting in the applicator and can also be used for positioning in the jaw assembly of the applicator.

[0072] As Figure 2 shown, the above-mentioned conjoined ligating clips are accommodated in the feeding assembly 13 of the applicator. Each ligating clip can be controlled to be sequentially pushed into the jaw assembly and used. As Figure 3 shown, 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. And in the applicator, the plurality of ligating clips are connected by the connecting member B, so that the distance between adjacent ligating clips A is controllable 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.

[0073] The specific structure of the handle assembly 30 and its control process will be introduced in detail below.

[0074] For example, Figure 8 shows a schematic internal structure diagram of the handle assembly. AsFigure 8 As 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, and 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.

[0075] 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 (i.e., pushing the ligating clip) operation. Figure 9 A partial perspective view of the feeding assembly is shown, Figure 10 showing Figure 9 a top view of the feeding assembly in Figure 9 and Figure 10 as shown, the feeding assembly 13 includes a pushing structure 131. The first pushing portion 331 is connected to the pushing structure 131, and 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.

[0076] For example, as Figure 9 and Figure 10 shown, the pushing structure 131 is integrally sheet-shaped, for example, in the form of a spring piece, and includes a plurality of pushing branches 131A. The plurality of pushing branches 131A are respectively inclined inward (i.e., inclined toward the space for accommodating the ligating clip, inclined toward the central axis of the tube body assembly 10), 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 rows, upper and lower, 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, ensuring uniform force on the plurality of ligating clips A, and further ensuring the pushing form of the plurality of ligating clips A.

[0077] 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 spring piece. The limiting structure 132 includes a plurality of limiting portions 132A. The structure of the plurality of limiting portions 132A is, for example, substantially the same as that of the plurality of pushing branches 131A, but is slightly offset left and right (i.e., the proximal end and the distal end are offset) relative to the plurality of pushing branches 131A. As Figure 10 shown, the plurality of limiting portions 132A are respectively more forward, that is, closer to the distal end, relative to the corresponding pushing branches 131A, so that the plurality of limiting portions 132A can be respectively used to limit the plurality of ligating clips A pushed by the pushing branches 131A to the limiting portions 132A.

[0078] For example, the limiting structure 132 is a fixed structure and does not move along the axial direction. The material pushing structure 131 is a controllable movable structure. When the material pushing structure 131 is pushed by the first pushing part 331, the material pushing structure 131 moves relative to the limiting structure 132 along the axial direction.

[0079] For example, the material pushing structure 131 has an initial position and a pushing-out position. As Figure 9 and Figure 10 shown, during the process of pushing the material pushing structure 131, the material pushing structure 131 starts from the initial position and moves relative to the limiting structure 132, and the pushing branch 131A abuts against the rear ends (the right side in the figure) of the first protrusion A4 and the second protrusion A5 to push a plurality of ligation clips A towards the distal end of the tube assembly 20. The ligation clips A respectively squeeze the limiting part 132A to cause elastic deformation of the limiting part 132A. When a plurality of ligation clips A are pushed by a pitch (for example, the length occupied by one ligation clip and one connecting piece B), the ligation clip A reaches the limiting part 132A in front of it and is limited by the limiting part 132A in front of it. At this time, the limiting part 132A rebounds so that the ligation clip A cannot retreat (move towards the proximal end). At this time, the material pushing structure 131 reaches the pushing-out position, thereby realizing one feeding operation. After that, the material pushing structure 131 can be controlled to retreat to the initial position. Due to the limiting effect of the limiting part 132A, the ligation clip A will no longer move, and the ligation clip A is pushed by a pitch.

[0080] For example, the ligation 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 ligation 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 material pushing structure 131, when the ligation clip is pushed to the jaw assembly, since the first boss A4 and the second boss A5 of the ligation clip A are limited, the thrust transmitted by the material pushing structure 131 can promote the opening of the ligation clip to enable the ligation clip A to open smoothly, thereby avoiding the ligation clip from falling off when the clamping forceps are opened and increasing the safety of the ligation clip A.

[0081] For example, the clamping forceps are 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 part 332, which can also be called an outer tube pushing part, for controlling the movement of the outer tube assembly 12 relative to the inner tube assembly 11, and further realizing the control of the opening and closing of the jaw assembly and the cutting knife.

[0082] For example, the second pushing part 332 is connected to the outer tube assembly 12, and the feeding handle 31 is configured to control the movement of the second pushing part 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 closing or opening of the jaw assembly.

[0083] For example, the second pushing part 332 is sleeved on the first pushing part 331. For example, the second pushing part 332 is sleeved on the outside of the first pushing part 331. At this time, Figure 11 Relative to Figure 10 it is the case where the second pushing part 332 is sleeved on the outside of the first pushing part 331.

[0084] For example, as Figure 8 shown, the feeding handle 31 includes a first mating part 333 that mates with the first pushing part 331 and a second mating part 334 that mates with the second pushing part 332. The feeding handle 31 is configured to be controlled to simultaneously control the first mating part 333 and the second mating part 334, so as to respectively control the movement of the first pushing part 331 and the second pushing part 332, and further simultaneously control the operation of pushing the ligation clip A and the opening and semi-closing operations of the jaw assembly. Thus, the linkage between the operation of pushing the ligation clip and the opening and closing operations of the jaw assembly can be realized, and the correlation between feeding and clamping can be automatically controlled, and the operation is simple and reliable.

[0085] For example, at least one of the first mating part 333 and the second mating part 334 is an engaging part.

[0086] For example, in some examples, both the first mating part 333 and the second mating part 334 are engaging parts, and the first mating part 333 and the second mating part 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 mating part 333 and the second mating part 334 are continuously arranged engaging parts, such as tooth-shaped engaging parts; or rather, the first mating part 333 and the second mating part 334 are respectively different parts of the tooth-shaped engaging part of the feeding handle 31.

[0087] For example, in other embodiments, the first mating part 333 and the second mating part 334 can also be independent components or other mating components other than the engaging part.

[0088] For example, as Figure 8 shown, in this embodiment, the first pushing part 331 has an engaging part that meshes with the first mating part 333, such as a tooth-shaped engaging part, so as to be driven by the feeding handle 31. For example, as Figure 8 and Figure 11As shown, the handle assembly further includes a first push tube control part 335 and a second push tube control part 336. The first push tube control part 335 has an engaging part, such as a gear, that meshes with the second engaging part 334. The second engaging part 334 meshes with the gear of the first push tube control part 335 so that the second push tube control part 336 can be driven by the feeding handle 31.

[0089] For example, the first push tube control part 335 includes a curved guiding track. 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 part 336 is configured to be limited to the curved guiding track and can be driven by the first push tube control part 335 to move along the curved guiding track. The second push tube control part 336 includes a follower block 337. The follower block 337 is configured to be able to control the movement of the second pushing part 332 by abutting against the second pushing part 332.

[0090] For example, the outer contour of the first push tube control part 335 is a curve with a changing radius (reference can be made to the subsequent Figures 19 - 22 ), and the follower block 337 is fitted to the outer contour of the first push tube control part 335 to move along with the outer contour.

[0091] For example, as Figure 11 shown, the second pushing part 332 includes a protruding part 332A. The follower block 337 can act on the protruding part 332A to push the second pushing part 332.

[0092] Thus, when the feeding handle 31 is pulled to rotate, through the meshing of the first pushing part 331 and the first engaging part 333, the first pushing part 331 can be pushed to move distally, and drive the pushing structure 131 to move distally to realize the pushing of the ligation clip. At the same time, through the combination of the first push tube control part 335 and the second push tube control part 336, the second pushing 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 realize the control of the jaw assembly.

[0093] For example, in some examples, the first push tube control part 335 can be in the form of a cam. The outer contour of the cam is a closed curve with a changing radius relative to the rotation center of the cam. The outer contour of the cam 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 (i.e., the distal end and the proximal end). 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 pushing part 332 also moves backward, and the outer tube assembly 12 moves proximally, and the jaw assembly shows a tendency to gradually open; when the cam rotates in the direction of decreasing radius, the outer tube assembly 12 moves distally, and the follower block 337 is pushed distally (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 pushing part 332 moves forward, and the clamping pliers show a tendency to gradually close.

[0094] For example, Figure 13 A schematic diagram showing the radius change curve of the first push tube control part is shown, where the abscissa represents the rotation angle of the first push tube control part 335, and the ordinate represents the radius change of the curve guiding track. As Figure 13 shown, the curve of the curve guiding track includes a curve part with a gradually increasing radius and a curve part with a gradually decreasing radius, so that the follower block 337 can push the second pushing part 332 to move distally or proximally 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 distally to push the second pushing part 332 to control the outer tube assembly 12 to move distally to semi-close the ligating clip. After that, the follower block 337 moves proximally, and the second pushing part 332 and the outer tube assembly 12 retract (move proximally) to open the ligating clip.

[0095] 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 pushing force to the follower block 337 to maintain the stability and operability of the follower block 337.

[0096] 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 part 332 and the handle base 30A to provide a pulling force to the second pushing part 332 to maintain the stability and operability of the second pushing part 332.

[0097] For example, in some embodiments, as Figure 1 and Figure 2As shown, the handle assembly 30 further includes a clamping handle 32 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, enabling the outer tube assembly 12 to abut against the jaw assembly and controlling the jaw assembly to close (e.g., in a fully closed state) or open.

[0098] For example, Figure 14 The disassembled schematic diagram of a part of the handle assembly 30 is shown, such as Figure 14 As shown, the second pushing portion 332 includes a pushing protrusion 339, such as a pushing pin, and 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, so as 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, enabling the outer tube assembly 12 to abut against the jaw assembly and controlling the jaw assembly to close.

[0099] For example, the thrust 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.

[0100] For example, in some embodiments, the applicator may further have a bending function and a rotating function, which will be introduced in detail below.

[0101] For example, as Figure 3 shown, the inner tube assembly 11 includes a first portion 111 and a second portion 112 arranged in the axial direction (the first direction R1 in the figure). The first portion 111 and the second portion 112 are rotatably connected, such as hinged, and configured to be able to be controlled to rotate relative to each other along the first rotation axis Y1. The extending direction of the first rotation axis Y1 is different from the axial direction. For example, the first rotation axis extends along the second direction R2 in the figure, perpendicular to the first direction R1.

[0102] 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.

[0103] As Figure 1 and Figure 2As shown, the handle assembly 30 is connected to the proximal end 10A of the tube assembly 10 and includes a bending knob 50 configured to control the relative rotation of the first part 111 and the second part 112. For example, the bending knob 50 can control the bending of the first part 111 and the second part 112 in a plane perpendicular to the second direction R2.

[0104] For example, the inner tube assembly 11 further includes a third part 113. The first part 111, the second part 112, and the third part 113 are arranged in sequence along the axial direction, for example, in sequence along the direction from the distal end to the proximal end. The second part 112 and the third part 113 are rotatably connected, for example, hinged, and configured to be able to rotate relative to each other along the second rotation axis Y2 under control. 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.

[0105] For example, through the above settings, the tube assembly can at least achieve left - right bending from - 30° to + 30°. In some examples, it can achieve left - right bending from - 40° to + 40°, left - right bending from - 50° to + 50° or a larger angle range of bending.

[0106] For example, the first part 111 of the inner tube assembly 11 includes a distal component connected to the jaw assembly and has various structures for connecting to the jaw assembly and the cutting knife. The second part 112 is a bending structure, and the third part 113 is a straight inner tube. The straight inner tube can accommodate a feeding assembly 13, etc., to accommodate ligating clips, which will be introduced in detail later.

[0107] 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, in sequence along the direction 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. The first part 121 of the outer tube assembly 13 is connected to the first part 111 of the inner tube assembly 11; the third part 123 of the outer tube assembly 13 is connected to 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.

[0108] For example, the first part 121 of the outer tube assembly 13 can serve as an outer tube pusher, mainly used to push the jaw assembly and the cutting knife 23 at the distal end to achieve the opening and closing of the jaw assembly and the cutting operation of the cutting knife 23; the second part 122 can serve as an outer tube hinge for achieving bending operations; 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 of the clip applicator and the handle assembly 30.

[0109] For example, in some embodiments, as Figure 2 shown, the handle assembly 30 further includes at least one bending control assembly 14 connected between the first part 111 and the bending knob 50. The bending knob 50 is configured to control the displacement of the at least one bending control assembly 14 in the axial direction to control the rotational operation between the first part 111 and the second part 112, and also to control the rotational operation between the second part 112 and the third part 113, for example.

[0110] For example, in some examples, as Figure 2 shown, the at least one bending control assembly 14 includes a first bending pulling part 141 and a second bending pulling part 142. The first bending pulling part 141 and the second bending pulling part 142 respectively include opposite first ends 14A and second ends 14B. The first ends 14A of the first bending pulling part 141 and the second bending pulling part 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 respectively have hinge holes 111A to facilitate hinging with the first bending pulling part 141 and the second bending pulling part 142 through pins. For example, the second ends 14B of the first bending pulling part 141 and the second bending pulling part 142 are respectively connected to different positions of the bending knob 50. The bending knob 50 is configured to control the relative movement of the first bending pulling part 141 and the second bending pulling part 142 in the axial direction by rotation to control the rotational operation between the first part 111 and the second part 112, and the rotational operation between the second part 112 and the third part 113.

[0111] For example, in some embodiments, the first bending pulling part 141 and the second bending pulling part 142 can be in the form of bending pull rods, bending wires, bending ropes, bending sheets, etc., and the embodiments of the present disclosure do not make specific limitations thereto.

[0112] For example, in some examples, the first ends 14A of the first bending pulling part 141 and the second bending pulling part 142 can be respectively connected to opposite sides of the inner side of the first part 111. At this time, the first bending pulling part 141 and the second bending pulling part 142 are located inside the inner tube assembly 11; in other examples, the first ends 14A of the first bending pulling part 141 and the second bending pulling part 142 can be respectively connected to opposite sides of the outer side of the first part 111. At this time, the first bending pulling part 141 and the second bending pulling part 142 are located between the inner tube assembly 11 and the outer tube assembly 12.

[0113] For example, when the relative movement of the first bending pulling part 141 and the second bending pulling part 142 is controlled by the bending knob 50 to be relatively large, 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 realize a relatively large-angle bending of the jaw assembly; when the relative movement of the first bending pulling part 141 and the second bending pulling part 142 is controlled by the bending knob 50 to be relatively small, 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 of the jaw assembly can be realized.

[0114] For example, Figure 15 FIG. shows an exploded view of a part of the structure inside the handle assembly 30 and shows a part of the structure of the bending knob 50, such as Figure 15 shown, the bending knob 50 includes a pull rod control part 143 and a bending operation part C. The bending operation part C can be rotated to control the rotation state of the pull rod control part 143. The pull rod control part 143 takes the form of a disc, for example. The pull rod control part 143 includes a first sliding guide track 143A and a second sliding guide track 143B. The first bending pulling part 141 and the second bending pulling part 142 are respectively connected to the first sliding guide track 143A and the second sliding guide track 143B. The bending knob 50 is configured to control the sliding of the first bending pulling part 141 and the second bending pulling part 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 pulling part 141 and the second bending pulling part 142 along the axial direction.

[0115] For example, in some embodiments, as Figure 15 shown, the first bending pulling part 141 and the second bending pulling part 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 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 pulling part 141 and the second bending pulling part 142 along the axial direction.

[0116] For example, the opposite ends of the first sliding seat 144 and the second sliding seat 145 are respectively connected to the bending pulling part and the sliding guide track. For example, in Figure 15In the example, the overall extension direction of the first sliding seat 144 and the second sliding seat 145 is perpendicular to the extension direction of the first bending pulling part 141 and the second bending pulling part 142. The upper ends of the first sliding seat 144 and the second sliding seat 145 are fixedly connected to the first bending pulling part 141 and the second bending pulling part 142 respectively, and the lower ends of the first sliding seat 144 and the second sliding seat 145 are slidably connected to the first sliding guide track 143A and the second sliding guide track 143B respectively.

[0117] 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 sliding protrusions that cooperate with the sliding grooves respectively.

[0118] 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 with a changing radius. The arc shapes of the first sliding guide track 143A and the second sliding guide track 143B are basically the same, but the setting positions are opposite. 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. Thus, when the bending knob 50 rotates, the relative movement of the first bending pulling part 141 and the second bending pulling part 142 can be made stable and uniform, and the relative movement is larger within a limited space to achieve a large range of bending.

[0119] For example, in some embodiments, as Figure 16 shown, the handle assembly 30 may further include a first motion guiding plate 146 and a second motion guiding plate 147. The first motion guiding plate 146 and the second motion guiding plate 147 respectively include limiting tracks extending in the axial direction. The first sliding seat 144 and the second sliding seat 145 are respectively connected to the pull rod control part 143 through the first motion guiding plate 146 and the second motion guiding plate 147 to limit the axial movement of the first sliding seat 144 and the second sliding seat 145.

[0120] For example, as Figure 16As shown, the limiting track of the first movement guide plate 146 includes a first guide hole 146A extending in 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 in 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 pull rod 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 in the axial direction to avoid sliding offset. Moreover, each movement guide plate is simultaneously arranged on two sliding guide tracks, providing higher stability.

[0121] 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 whole of the tube assembly 10 and the jaw assembly 20 to rotate relative to the handle base 30A about a third rotation axis Y3 parallel to the axial direction of the tube assembly 10. The third rotation axis Y3 is parallel to the first direction R1.

[0122] That is to say, the rotating head 40 is used to control the rotation of the jaw body part including the tube assembly 10 and the jaw assembly 20 along the axis without angular limitation. When the whole jaw body rotates, all parts including the tube assembly 10 and the jaw assembly 20 rotate together. When rotating to any angle, the clamping pliers can be operated to bend without being restricted by the rotational movement.

[0123] For example, in some embodiments, as Figure 1 and Figure 2 shown, the bending knob 50 is arranged on 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 control assembly 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 end and the distal end of the inner tube assembly 11 fixed all the time.

[0124] For example, the holes O1 and O2 have axial extension trajectories for mating with the pins 15, enabling the bending control assembly 14 and the outer tube assembly 12 to axially move along the axial trajectories defined by the holes O1 and O2. Thus, the bending control assembly 14 can achieve bending through relative movement with the inner tube assembly 11, and the outer tube assembly 12 can control the clamping forceps and the cutting knife through 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 control assembly 14 and the outer tube assembly 12.

[0125] 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 part 331A of the first push tube structure 33, facilitating 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 tube body assembly 10 is also rotatably connected to the second pushing part 332, for example, rotatably connected to the second rotating part 332B of the second pushing part 332 through the first rotating part 35, facilitating the overall rotation of the tube body assembly 10 and the jaw assembly 20 relative to the handle base 30A.

[0126] 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 part 35. Combining Figure 8 , for example, fixedly connected to the first rotating part 35 through the pin 35A and connected to the outer tube assembly 12 through the outer tube slot 34A. Thus, when the first rotating part 35 rotates with the second rotating part 332B of the second pushing part 332, it can drive the tube body assembly 10 and the jaw assembly 20 to rotate simultaneously.

[0127] For example, as Figure 8 shown, the first rotating part 35 also at least partially sleeves outside the third rotating part 331A of the first push tube structure 33 and can rotate relative to the third rotating part 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. In the traditional technology, this series of actions are solidified into one body. The user can only complete the operation from the start to clamping the clamping forceps of the jaw assembly at one time. Once the clamping forceps of the jaw assembly start to clamp, it can only continue to clamp and cannot open the clamping forceps of the jaw assembly again. When doctors actually use it, they often need to temporarily fine-tune the clamping position. However, if the clamping forceps of the jaw assembly have already been closed partially, it is difficult to move them again, which is rather passive. The technical solution provided by the embodiments of the present disclosure can solve this problem.

[0128] For example, Figures 19 - 22The figure shows a schematic diagram of the process from one-time feeding to clamping of the clip applicator provided by at least one embodiment of the present disclosure.

[0129] For example, as Figure 19 shown, the clip applicator is in an initial state, and each structure such as the feeding handle 31 and the clamping handle 32 is in an initial state. At this time, the conjoined ligating clip is accommodated in the feeding assembly 13, and each ligating clip accommodated in the feeding assembly 13 is in a semi-closed state. There is no ligating clip in the jaw assembly, and the jaw assembly is fully open.

[0130] For example, as Figure 20 shown, when the feeding handle 31 is pulled to the first position, for example, pulled counterclockwise to the Figure 20 position shown in the figure, the feeding handle 31 simultaneously drives the first pushing part 331 and the second pushing part 332. The feeding assembly 13 starts to feed. The first push tube control part 335 (such as a cam) rotates in the direction of decreasing radius, and the follower block 337 is pushed forward (to the left in the figure), so that the second pushing part 332 moves forward, and the jaw assembly shows a gradually closing trend and finally shows a semi-closed state. At this time, the most distal ligating clip is also in a semi-closed state, and this state is the state when the ligating clip is accommodated in the feeding assembly 13. Thus, the state of the jaw assembly adapts to the shape of the ligating clip to stably fix the ligating clip to the clip applicator jaws and prevent the ligating clip from falling off.

[0131] For example, as Figure 21 shown, continue to pull the feeding handle 31 to the second position, for example, pulled counterclockwise to the Figure 21 position shown in the figure. The feeding handle 31 simultaneously drives the first pushing part 331 and the second pushing part 332. The feeding assembly 13 feeds in place, that is, the most distal ligating clip is fed into the jaw assembly. The first push tube control part 335 (such as a cam) rotates in the direction of increasing radius, and the follower block 337 is pushed backward (to the right in the figure), so that the second pushing part 332 moves backward, and the jaw assembly shows a gradually opening trend and finally shows an open state. Correspondingly, the most distal ligating clip is also in an open state.

[0132] For example, as Figure 22As shown, since the outermost ligating clip has been pushed to the jaw assembly and the jaw assembly is in an open state, the ligating clip is in a state ready for use. At this time, the ligating clip can be operated, placed at the blood vessel or tissue to be clamped, and the clamping handle 32 is pulled, so that the clamping control part 321 pushes the pushing protrusion 339 to control the second pushing part 332 to move forward, enabling the outer tube assembly 12 to abut against the jaw assembly and controlling the jaw assembly to close; meanwhile, the cutting knife 23 is driven to cut the connecting piece between the outermost ligating clip and the adjacent ligating clip to disconnect the adjacent ligating clips. Thus, the linkage between the cutting action and the clamping action is achieved, that is, one action can simultaneously achieve the cutting action and the clamping action without multiple operations.

[0133] Thus, one feeding to the clamping operation is realized.

[0134] After that, the feeding handle 31 can be manually retracted to the initial position, and the clamping handle 32 can rely on the pulling force of the tension spring 340 to retract to the initial position to wait for the next operation.

[0135] In summary, in the embodiment 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 jaw assembly is also in a semi-closed state accordingly to adapt to the shape of the ligating clip and fix it to the jaw assembly. When the ligating clip is transported in place, the jaw assembly drives the ligating clip to open, and when needed, the clamping handle is used to achieve closing. The actions of pushing the ligating clip, the semi-closure of the jaw assembly, the feeding in place, and the opening of the jaw assembly have strict logic and timing control. The technical solution provided by the embodiment 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 logic, only needs to pinch the feeding handle to the end, and then use the clamping handle to clamp the ligating clip.

[0136] In addition, in the embodiment of the present disclosure, the feeding operation and the clamping operation are linked through the feeding handle. With the design of the first push tube control part, when the feeding is completed, the jaw assembly automatically opens, so that the ligating clip also automatically opens. At this time, before the clamping handle completely closes the ligating clip, the clamping 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 control in this state.

[0137] On the other hand, a continuous clip applier generally requires the manufacturer to load the ligation clip into the clip applier. Whether it is a traditional single ligation clip or a conjoined ligation clip used in the embodiment of the present disclosure, it is in a compressed state in the clip applier, that is, a semi-closed state. Limited by the industry standards for laparoscopic surgery, surgical instruments cannot exceed several specific diameters such as 5mm, 8mm or 10mm, and the pipe diameter of the clip applier cannot be expanded at will, resulting in the ligation clip being in a compressed state from the completion of assembly to the use, that is, a semi-closed state. Since most ligation clips are made of high molecular polymer materials, they have the characteristics of aging creep and will lose elasticity over a period of months to years. When the doctor uses the clip applier, the loaded ligation clip is almost solidified in a semi-closed state and cannot be restored to a fully open state through its own elasticity. At this time, the ligation clip can only be opened with the help of the clip applier. The conventional clip applier uses the movement of the clip applier to push the ligation clip open, but this method is less reliable and often fails, resulting in the ligation clip being unable to be opened, or even the clip applier is opened but the ligation clip is not opened, causing the ligation clip to be detached and fall into the patient's body. The clip applier provided by the disclosed embodiment does not have the risk of the ligation clip falling, and the ligation clip in a semi-closed state is opened by the thrust transmitted by the first push tube structure, that is, the first push tube structure transmits the thrust to the frontmost (distal) ligation clip through the feeding assembly and the connected ligation clip, so that the ligation clip is gradually opened, and the operation is more stable and reliable.

[0138] In addition, in the embodiment of the present disclosure, during the pushing and clamping process, the tail end of the ligation clip is always connected and restricted by the rear ligation clip, which also avoids the ligation clip falling off from the clip applier and causing surgical safety risks.

[0139] On the other hand, the embodiments of the present disclosure can jointly promote the one-piece ligation clamp, combining multiple parts into one, and utilizing the connection characteristics of the one-piece ligation clamp itself to increase the bending and rotation functions of the clamp applier. There is no need to set a transmission structure or a positioning structure for the ligation clamp at the bending position, which cannot be achieved by a single-body ligation clamp. In addition, it can also help the operator bend the clamp applier to enter some narrow gaps and bends to apply the ligation clamp, thereby increasing the freedom of movement of the instrument, greatly improving the doctor's operating convenience, and saving operation time.

[0140] There are a few points to note:

[0141] (1) The drawings of the embodiments of the present disclosure only involve structures related to some embodiments of the present disclosure, and other structures may refer to the general design.

[0142] (2) For the sake of clarity, in the drawings used to describe the embodiments of the present disclosure, the thickness of layers or regions may be enlarged or reduced, that is, these drawings are not drawn entirely according to the actual scale.

[0143] (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.

[0144] The above is only the specific implementation manner 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 continuous clip applier, characterized in that: include: A tube body assembly having a proximal end and a distal end, comprising an inner tube assembly and an outer tube assembly sleeved outside the inner tube assembly, wherein the inner tube assembly and the outer tube assembly are arranged to be controlled to move relative to each other along the axis direction of the tube body assembly; A jaw assembly connected to the distal end of the tube assembly, comprising a first jaw head and a second jaw head connected to the inner tube assembly and arranged opposite to each other; a cutting knife movably connected to the distal end of the inner tube assembly; and A handle assembly is connected to the proximal end of the tube body assembly and is configured to control the relative movement of the inner tube assembly and the outer tube assembly along the axial direction so that the outer tube assembly abuts against the first clamp head and the second clamp head respectively to control the closing and opening of the first clamp head and the second clamp head and the movement of the cutting knife.

2. The multi-shot clip applier according to claim 1, characterized in that: The jaw assembly includes a first mating surface that cooperates with the outer tube assembly, and the first mating surface is configured to abut and slide relatively with the outer tube assembly when the outer tube assembly moves relative to the inner tube assembly to achieve closing and opening of the first clamp head and the second clamp head.

3. The multi-shot clip applier according to claim 1, characterized in that: The cutting knife is rotatably connected to the distal end of the inner tube assembly. The cutting knife comprises a second mating surface, and the second mating surface is configured to abut against and slide relatively with the outer tube assembly when the outer tube assembly moves relative to the inner tube assembly, so as to drive the cutting knife to rotate.

4. The multi-shot clip applier according to claim 3, characterized in that: The cutting knife includes a first knife body and a second knife body relative to each other, wherein the first knife body and the second knife body are arranged relative to each other and are rotatably connected to the inner tube assembly, and the first knife body and the second knife body are configured to rotate relative to the inner tube assembly when the outer tube assembly moves relative to the inner tube assembly.

5. The multi-shot clip applier according to claim 4, characterized in that: The cross-sections of the first blade body and the second blade body along the axial direction are respectively V-shaped, the V-shape includes a first linear portion and a second linear portion connected to each other, and the second linear portion includes the second mating surface; An end of the first linear portion away from the second linear portion is formed as a cutting portion, and an end of the second linear portion away from the first linear portion is hinged to the inner tube assembly to form the rotational connection.

6. The multi-shot clip applier according to claim 4, characterized in that: An escape space is provided between the proximal ends of the first pliers head and the proximal ends of the second pliers head, and the first blade body and the second blade body are configured to rotate in the escape space when the outer tube assembly moves relative to the inner tube assembly.

7. The multi-shot clip applier according to claim 5, characterized in that: The first blade body and the second blade body further include a blade body limiting portion, respectively, the blade body limiting portion is connected to the end of the second linear portion of the first blade body and the second blade body away from the first linear portion, and In a cross section along the axial direction, the blade limiting portion and the second linear portion form an obtuse angle.

8. The multi-shot clip applier according to claim 4, characterized in that: The axis direction is a first direction, The rotation axes of the first blade body and the second blade body extend along a second direction, The first clamp head and the second clamp head are rotatably connected to the inner tube assembly, and the rotation axes of the first clamp head and the second clamp head extend along a third direction. The first direction is perpendicular to the second direction and perpendicular to the third direction, and the second direction is perpendicular to the third direction.

9. The multi-shot clip applier according to claim 3, characterized in that: The outer tube assembly includes a push knife structure opposite to the second mating surface, and the push knife structure is configured to abut against the second mating surface when the outer tube assembly moves relative to the inner tube assembly to drive the cutting knife to rotate.

10. The multi-shot clip applier according to claim 9, characterized in that: The push knife structure includes a protrusion arranged on the inner wall of the outer tube assembly, and the protrusion matches the second matching surface.

11. The multi-shot clip applier according to any one of claims 1 to 10, characterized in that: Also includes: A feeding assembly is arranged in the inner tube assembly; as well as At least two connected ligation clips are accommodated in the feeding assembly, and the at least two connected ligation clips are configured to be cut and separated by the cutting knife.

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