Multi-shot treatment device for endoscope and method of using the same

Abstract

A multiple-shot treatment device (100) for an endoscope comprises at least two treatment units (11), a delivery assembly and an operation assembly. The treatment unit (11) comprises a capsule (111) and a clamp arm (112), and the proximal end of the capsule (111) comprises a first limiting portion (40, 40a, 40b) that can be deformed or invalidated under the action of an external force. The distal end of the delivery tube (21) and / or the proximal end of the capsule (111) also comprises a second limiting portion (50, 50a, 50b, 50c, 50d) that can expand and contract along the radial direction of the delivery tube (21). The multiple-shot treatment device (100) for an endoscope not only strengthens the connection between the capsule (111) and the delivery tube (21), facilitating the opening and closing operation of the clamp arm (112), but also prevents the treatment unit from interfering with or getting stuck on the inner wall of the delivery tube (21) due to the outwardly expanded first limiting portion (40, 40a, 40b), thereby ensuring that the treatment unit (11) moves smoothly in the delivery tube (21), thereby enabling the treatment unit (11) to be effectively repeatedly opened and closed before being released. A method for using the multiple-shot treatment device (100) for an endoscope is also provided.

Description

[0001] This application claims the priority of the Chinese patent application filed on November 14, 2019, with application number 201911111454.5, and invention name “Multi-shot processing device for endoscope and method of use thereof”; and this application claims the priority of the Chinese patent application filed on February 18, 2020, with application number 202010099167.3, and invention name “Multi-shot processing device for endoscope and method of use thereof”; all the contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of medical equipment, and in particular to a multi-shot processing device for an endoscope and a method of using the same. Background Art

[0003] Over the past 50 years, endoscopes have gone through the stages from disease diagnosis to disease treatment. They are very effective and reliable for the treatment of some diseases. Among them, flexible endoscopes have been widely used in the fields of digestion, gynecology, urology, respiratory tract, and cardiovascular and cerebrovascular diseases because they do not require surgical laparotomy and are minimally invasive. At the same time, technical requirements for the combination of miniaturization, operability, and high flexibility are proposed for surgical instruments that cooperate with flexible endoscopes. The stomach and intestines of organisms often cause bleeding or mucosal damage or even perforation due to various diseases or accidental injuries or injuries during endoscopic diagnosis and treatment. In clinical practice, mechanical compression can be used to stop bleeding through hemostatic clips. Hemostatic clips can grab the tissue around the wound and temporarily hold the wound edges together to close the wound. They are also used for wound suture. Sometimes more than one hemostatic clip is required during surgery, and frequent instrument switching will reduce surgical efficiency and increase patient risks.

[0004] Since the diameter of the endoscopic instrument channel is between 2.8mm and 3.2mm, and it will bend more than 180° during the reverse endoscope surgery, how to ensure the precise combination of the functions of free rotation, delivery, front and back switching and repeated opening and closing of the minimally invasive multiple hemostatic clips under the above-mentioned extreme bending posture is a problem that traditional multiple hemostatic clips need to overcome. Traditional multiple hemostatic clips have multiple clip units in their delivery tubes. The rear clip unit may be stuck due to the interference of the front clip unit. At the same time, since multiple clip units are housed inside the delivery tube, they cannot pass through the curved delivery tube cavity smoothly under the extreme bending posture, and cannot achieve stable repeated opening and closing after the clip unit extends out of the delivery tube.

[0005] Application Contents

[0006] According to a first aspect of the present application, there is provided a multiple-shot treatment device for an endoscope, comprising: at least two treatment units, the treatment units comprising a capsule and a clamp arm, the clamp arm being accommodated in the capsule and being movable between an open configuration and a closed configuration, the proximal end of the capsule having a first limit portion capable of being deformed or invalidated under the action of an external force; a delivery assembly comprising a delivery tube for accommodating the treatment units, the distal end of the delivery tube having a stopper extending toward the axis of the delivery tube, and a manipulation member penetrating the delivery tube, the manipulation member being capable of driving the treatment units to switch from a configuration in which the most distal treatment unit is combined with the distal end of the delivery tube to a configuration in which the most distal treatment unit is separated from the distal end of the delivery tube and released; an operating assembly comprising a handle portion combined with the proximal end of the delivery tube, and a sliding portion sleeved on the handle portion and combined with the proximal end of the manipulation member, the sliding portion being used to drive the manipulation member to move; wherein the distal end of the delivery tube and / or the proximal end of the capsule also have a second limit portion for abutting against the stopper and capable of expanding and contracting along the radial direction of the delivery tube.

[0007] In one embodiment, the second limiting portion is disposed at the distal end of the delivery tube. In the combined configuration, the second limiting portion is located at the proximal end of the baffle, and the first limiting portion has an inwardly retracted portion close to the axis of the capsule body, and the inwardly retracted portion is used to abut against the second limiting portion and limit the capsule body.

[0008] In one embodiment, in the released configuration, the outer diameter of the first limiting portion is smaller than the smaller one of the diameter of the first through hole formed by the stopper and the inner diameter of the second limiting portion.

[0009] In one embodiment, the first limiting portion has an extension portion for accommodating the second limiting portion, and an elastic member sleeved on the proximal side of the extension portion, the inner side surface of the elastic member abuts against the outer side surface of the extension portion and is used to retract the inner portion.

[0010] In one embodiment, the first limiting portion includes a first base and a first protrusion, the first base is accommodated at the proximal end of the capsule, the first protrusion is connected to the first base and extends outward, the first protrusion extends out of the side wall of the capsule and is limited to the proximal side of the stopper.

[0011] In one embodiment, the surface angle between the first base and the first protrusion is less than or equal to 30°, and a deformation-inducing portion is provided on the proximal end surface of the first base, and the deformation-inducing portion is used to deform or fail the first base when the first base is subjected to force.

[0012] In one embodiment, the change-inducing portion penetrates the proximal end surface of the first base portion.

[0013] In one embodiment, a head is radially protruded from the distal end of the manipulation member, a second through hole is formed at the center of the first base, and the second through hole allows the head to pass through, and the minimum inner diameter of the second through hole is smaller than the maximum outer diameter of the head.

[0014] In one embodiment, the processing unit further includes a base, which is fixed to the proximal end of the capsule, and has a receiving cavity for accommodating the first base, and a third through hole for the first protrusion to extend is formed on the side wall of the base.

[0015] In one of the embodiments, in the combined configuration, the first limiting portion is located inside the stop platform and is engaged with the stop platform, and in the released configuration, the first limiting portion is deformed or fails under the action of the operating member and is disengaged from the stop platform, and the diameter of the first through hole formed by the stop platform is larger than the distal outer diameter of the first limiting portion and smaller than the proximal outer diameter of the second limiting portion.

[0016] In one embodiment, the inner diameter of the second limiting portion decreases from the proximal end of the delivery tube toward the distal end of the delivery tube.

[0017] In one embodiment, the second limiting portion is arranged at the distal end of the conveying tube and is accommodated on the proximal side of the baffle. When not subjected to radial force, the distal inner diameter of the second limiting portion is smaller than the outer diameter of the processing unit, and the proximal inner diameter of the second limiting portion is larger than the outer diameter of the processing unit.

[0018] In one of the embodiments, in the engaged configuration, the distal end of the second limiting portion abuts against the retracted portion, and the proximal end of the baffle abuts against the distal end surface of the first limiting portion, and the operating member can move the clamp arm between the open configuration and the closed configuration; in the released configuration, the proximal side of the sliding portion moves to release the engagement relationship between the operating member, the processing unit and the first limiting portion, thereby invalidating the engagement between the first limiting portion and the baffle.

[0019] In one embodiment, the second limiting portion is arranged at the distal end of the delivery tube, and the second limiting portion includes a plurality of teeth arranged at intervals along the circumference of the delivery tube and gathered toward the distal end of the delivery tube, the distal end surface of the teeth is used to abut against the inwardly retracted portion, and the proximal side of the teeth is used to abut against the outwardly expanded first limiting portion.

[0020] In one embodiment, the second limiting portion includes a second base and a second protrusion, the second base is accommodated in the capsule, the second protrusion is connected to the second base and extends outward, the second protrusion extends out of the side wall of the capsule and limits the stopper.

[0021] In one embodiment, the number of the second protrusions is set to be multiple, and they are arranged at intervals along the circumferential direction of the second base.

[0022] In one embodiment, a first opening capable of providing a deformation margin is provided on the side wall of the second limiting portion, and the first opening penetrates the side wall of the second limiting portion; and / or a second opening is also provided on the side wall of the second limiting portion, and the second opening extends from the proximal end surface of the side wall of the second limiting portion to the side wall of the second limiting portion, and the number of the second openings is set to be multiple, and the multiple second openings are arranged at intervals along the circumference of the second limiting portion.

[0023] In one embodiment, the distal side of the manipulation member is constructed as a head, a recessed portion and a shoulder; and the proximal side of the clamp arm has a clamping piece for the recessed portion to pass through and fix, the clamping piece is respectively abutted against the proximal side of the head and the distal side of the shoulder, and the clamping piece fails when subjected to a predetermined force.

[0024] In one embodiment, the clamping member includes a pair of pin pieces passing through the proximal side of the clamp arm, the pin piece includes a first end and a second end, the second end is a movable end, the first end is integrally formed into a U shape or a baffle is provided on the first end, the baffle is used to limit the pin piece and fix the first end to the clamp arm.

[0025] In one embodiment, the distal end of the shoulder is tilted inwardly toward the central axis to ensure that the manipulation member is clamped to the proximal end of the clamping member, thereby driving the processing unit to rotate.

[0026] In one embodiment, the clamping member includes a folded portion formed by transitioning inwardly from the arm surface of the clamping arm, and the folded portion and the clamping arm are arranged around and form two end surfaces for clamping against the inner recess.

[0027] In one embodiment, the processing unit further includes a limiting structure disposed between the two clamp arms. In a closed configuration, the operating member passes through the limiting structure and is limited by the limiting structure to a direction in which the head is proximally pressed against the clamping member.

[0028] In one embodiment, part of the side wall at the proximal end of the clamp arm extends outward and forms a locking portion, part of the side wall of the capsule body is bent inward and a hole portion is formed on the side wall of the capsule body, and the hole portion is adapted to the locking portion and can limit the movement of the clamp arm toward the distal end of the capsule body.

[0029] In one embodiment, the delivery tube includes a first tube relatively located at the distal end and a second tube relatively located at the proximal end, the first tube is fixed to the second tube, the first tube is formed by winding a flat wire, the second tube is formed by winding a round wire, and the first tube is used to accommodate the processing component.

[0030] According to a second aspect of the present application, a multiple-shot processing device for an endoscope is provided, comprising: a processing assembly, comprising more than two processing units, the proximal end of the processing unit having a first limit portion that can be deformed or failed under the action of an external force; a delivery assembly, comprising a delivery tube for accommodating the processing assembly, a push tube passing through the delivery tube, and a manipulation member passing through the push tube, wherein the distal end of the push tube abuts against the proximal processing unit; an operating assembly, comprising a handle portion combined with the proximal end of the delivery tube; a sliding portion combined with the proximal end of the manipulation member to control the opening, closing and release of the distal processing unit; and a pushing assembly arranged on the handle portion, wherein the pushing assembly comprises a fixed seat fixed to the proximal end of the push tube; wherein the handle portion is provided with a slide groove for the fixed seat to slide, and the handle portion is provided with a mark along the slide groove that cooperates with the fixed seat and indicates the number of the processing units.

[0031] In one embodiment, the pushing assembly also includes a locking member and a reset member, the locking member is connected to the fixing seat, the reset member is arranged between the fixing seat and the locking member, and is held against the locking member, the locking member is provided with a first locking portion, and the handle portion is provided with a second locking portion, the first locking portion can engage or disengage with the second locking portion to lock or unlock the locking member and the handle portion.

[0032] In one embodiment, a marking portion is provided on the handle portion, and the number of the marking portions is set to be a plurality of portions arranged equidistantly along the moving direction of the fixing seat; the marking portion is a digital mark, and the digital mark is used to indicate the number of the remaining processing units.

[0033] In one embodiment, the fixing seat is provided with a guide column extending toward the locking member, the locking member is provided with a guide groove for the guide column to extend into, and the locking member can move relative to the locking member along the axial direction of the guide column.

[0034] In one of the embodiments, the locking member is further provided with a protruding portion that can protrude from the side wall of the handle portion in a locked configuration, and the side wall of the handle portion is correspondingly provided with a sliding groove for the protruding portion to extend and slide.

[0035] In one of the embodiments, the pushing assembly further includes a crimping piece, which is sleeved on the pushing tube and fixedly connected to the fixing seat.

[0036] In one embodiment, the number of the crimping members is set to two, and the two crimping members are respectively fixed at two ends of the fixing seat.

[0037] According to a third aspect of the present application, a method for using a multi-shot treatment device for an endoscope is provided. Based on the multi-shot treatment device for an endoscope, the multi-shot treatment device for an endoscope includes a treatment component, a conveying component and a pushing component, wherein the treatment component includes more than two treatment units, the pushing component includes a conveying tube for accommodating the treatment component, a pushing tube inserted in the conveying tube, and a manipulation member inserted in the pushing tube, wherein the distal end of the pushing tube abuts against the treatment unit on the proximal side; the pushing component is fixedly connected to the proximal end of the pushing tube; the method for using the multi-shot treatment device includes the following steps: after releasing the treatment unit at the farthest end of the conveying tube, driving the manipulation member proximally relative to the conveying tube until obtaining a first user feedback indicating that the next treatment unit is combined with the far end of the manipulation member; further driving the pushing component distally relative to the conveying tube, moving the treatment unit toward the far end of the conveying tube through the pushing tube fixed to the pushing component, until obtaining a second user feedback indicating that the next treatment unit is combined with the far end of the conveying tube; after obtaining the second user feedback, driving the manipulation component to freely open and close the farthest treatment unit to obtain a desired action posture.

[0038] In one of the embodiments, the method for using the multi-shot treatment device for an endoscope also includes: the pushing assembly includes a fixing seat, a locking member and a reset member, the reset member is held between the fixing seat and the locking member, the locking member is provided with a first locking portion that cooperates with a second locking portion on the handle, when the pushing tube is moved, the locking member is pressed to unlock the first locking portion and the second locking portion; after moving to the expected position, the locking member is released to restore the locking of the first locking portion and the second locking portion.

[0039] Compared with the conventional technology, the beneficial effect of the present application is that: a first limiting portion that can be deformed or invalidated under the action of external force is provided at the proximal end of the capsule, a stopper that is engaged with the first limiting portion is provided at the distal end of the delivery tube, and when the first limiting portion is engaged with the stopper, the clamp arm can switch between the open and closed configurations. A second limiting portion that is abutted against the stopper is provided at the distal end of the delivery tube and / or the proximal end of the capsule, and the second limiting portion is correspondingly located on the inner side or the outer side of the stopper, and can enable the distal end of the capsule to pass through the stopper by expanding or contracting, on the one hand, enhancing the engagement between the first limiting portion and the delivery tube, and on the other hand, limiting the movement of the capsule relative to the proximal end of the delivery tube. The multi-shot treatment device for endoscopes can ensure that the treatment unit moves smoothly in the delivery tube, and the first limiting portion that expands outward will not interfere with or jam the inner wall of the delivery tube, and can also achieve effective repeated opening and closing of the treatment unit before being released through the action of the first limiting portion.

[0040] Since the operating member can effectively load each treatment unit, especially the next treatment unit, and can be repeatedly opened and closed, the release process of each treatment unit can be guaranteed to be stable and reliable. Moreover, once the multi-treatment device for endoscope is inserted, multiple treatment units can be released to clamp the lesion site, which can greatly reduce the operation time and reduce the discomfort during the operation.

[0041] In addition, the present application also provides a multi-shot processing device for an endoscope, which can act on the push tube and drive the push tube to move synchronously through a pushing assembly arranged in the handle portion, so that the processing unit relatively located at the proximal end of the delivery tube can move toward the distal direction, so that the operating component can effectively load and operate the processing unit located outside its loading stroke, thereby increasing the number of processing units accommodated in the delivery tube and ensuring that each processing unit can be effectively loaded.

[0042] The present application also provides a method for using a multi-shot processing device for an endoscope that can effectively perform repeated opening and closing operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to better describe and illustrate the embodiments and / or examples of the inventions disclosed herein, reference may be made to one or more drawings. The additional details or examples used to describe the drawings should not be considered as limiting the scope of any of the disclosed inventions, the embodiments and / or examples currently described, and the best modes of these inventions currently understood.

[0044] Figure 1 A schematic structural diagram of a multi-shot processing device for an endoscope at a first viewing angle provided in one of the embodiments.

[0045] Figure 2 for Figure 1 A cross-sectional view of a multi-shot treatment device for an endoscope is shown.

[0046] Figure 3 for Figure 1 The structure diagram of the multi-shot processing device for endoscope shown in the second viewing angle.

[0047] Figure 4 for Figure 3 A cross-sectional view of a multi-shot treatment device for an endoscope is shown.

[0048] Figure 5 for Figure 4 An enlarged schematic diagram of part A in FIG.

[0049] Figure 6 for Figure 5 A schematic diagram of the structure in another embodiment.

[0050] Figure 7 A schematic structural diagram of a mounting portion provided in one embodiment.

[0051] Figure 8 This is a schematic diagram of the structure of the multi-shot processing device for endoscope with some structures hidden.

[0052] FIG. 9( a ) is a schematic diagram of the three-dimensional structure of the first limiting portion provided in one embodiment.

[0053] FIG9( b ) is a schematic diagram of the first limiting portion provided in one embodiment in one of the use states.

[0054] FIG9( c ) is a schematic diagram of the first limiting portion provided in one embodiment in one of the use states.

[0055] Fig.10 A schematic structural diagram of a manipulation component provided in one embodiment.

[0056] Fig.11 A schematic structural diagram of a second limiting portion provided in one embodiment.

[0057] Fig.12 A schematic structural diagram of a second limiting portion provided in one embodiment.

[0058] Fig.13 A schematic structural diagram of a second limiting portion provided in one embodiment.

[0059] Fig.14 A schematic diagram of assembling the processing unit, the first limiting portion, and the second limiting portion provided in one embodiment.

[0060] Fig.15 A schematic diagram of the assembly of the capsule body and the first limiting portion provided in one embodiment.

[0061] Fig.16 A schematic diagram of the three-dimensional structure of a base provided in one embodiment.

[0062] Fig.17 A schematic structural diagram of a second limiting portion provided in one embodiment.

[0063] Fig.18 A schematic diagram of assembling the processing unit, the first limiting portion, and the second limiting portion provided in one embodiment.

[0064] Fig.19 for Fig.18 Schematic diagram from another perspective.

[0065] Fig. 20 A cross-sectional view of a multi-shot treatment device for an endoscope provided in accordance with one embodiment.

[0066] Fig.21 for Fig. 20 An enlarged schematic diagram of part B in FIG.

[0067] Fig. 22 A schematic diagram of the assembly of the capsule body and the first limiting portion provided in one embodiment.

[0068] Fig.23 A schematic diagram of the assembly of the capsule body and the first limiting portion provided in one embodiment.

[0069] Fig.24 A schematic structural diagram of a limiting structure provided in one of the embodiments.

[0070] Fig.25 A schematic structural diagram of a limiting structure provided in one of the embodiments.

[0071] Fig.26 A schematic structural diagram of a clamping arm provided in one embodiment.

[0072] Fig. 27 for Fig.26 The schematic diagram of the structure of the clamp arm shown in another perspective.

[0073] Fig.28 A schematic diagram of the assembly structure of a clamping member, a processing unit, and a manipulation member provided in one embodiment.

[0074] Fig.29 A schematic diagram of the structure of a card firmware provided in one embodiment.

[0075] Fig.30 A schematic diagram of the assembly structure of a clamping member, a processing unit, and a manipulation member provided in one embodiment.

[0076] Fig.31 A schematic structural diagram of a clamping arm provided in one embodiment.

[0077] Fig.32 A schematic structural diagram of a clamping arm in an active state provided in one embodiment.

[0078] Fig.33 A schematic structural diagram of a clamp arm in a self-locking state provided in one of the embodiments.

[0079] Fig.34 A schematic structural diagram of a clamping arm in an active state provided in one embodiment.

[0080] Fig.35 A schematic structural diagram of a processing unit in a self-locking state provided in another embodiment.

[0081] Fig.36A schematic structural diagram of a multi-shot processing device for an endoscope provided in one embodiment.

[0082] Fig.37 for Fig.36 The structure diagram of the multi-shot processing device for endoscope shown in the first perspective.

[0083] Fig.38 for Fig.37 Schematic cross-sectional view of .

[0084] Fig.39 for Fig.36 The structure diagram of the multi-shot processing device for endoscope shown in the second viewing angle.

[0085] Fig.40 for Fig.39 Schematic cross-sectional view of .

[0086] Fig.41 A cross-sectional view of a multi-shot treatment device for an endoscope in use according to one embodiment.

[0087] Fig.42 for Fig.41 Enlarged schematic diagram of part C.

[0088] Fig.43 for Fig.41 Enlarged schematic diagram of part D in the figure.

[0089] Fig.44 This is a cross-sectional view of part C in another usage state.

[0090] Fig.45 A schematic diagram of an exploded view of a push component provided for one of the embodiments.

[0091] Fig.46 A schematic structural diagram of a fixing base provided in one embodiment.

[0092] Fig.47 A schematic structural diagram of a locking member provided in one embodiment.

[0093] Fig.48 A schematic structural diagram of a handle portion provided in one embodiment.

[0094] Fig.49 A schematic diagram of the usage status of the multi-shot processing device for an endoscope provided in one of the embodiments.

[0095] Fig.50 A schematic diagram of the usage status of the multi-shot processing device for an endoscope provided in one of the embodiments.

[0096] Fig.51A schematic diagram of the usage status of the multi-shot processing device for an endoscope provided in one of the embodiments.

[0097] Fig.52 for Fig.51 Enlarged schematic diagram of part E in the middle.

[0098] Fig.53 A schematic diagram of the usage status of the multi-shot processing device for an endoscope provided in one of the embodiments.

[0099] Fig.54 A schematic diagram of the usage status of the multi-shot processing device for an endoscope provided in one of the embodiments.

[0100] Fig.55 A schematic diagram of the usage status of the multi-shot processing device for an endoscope provided in one of the embodiments.

[0101] Fig.56 A schematic diagram of the usage status of a multi-shot processing device for an endoscope provided in another embodiment.

[0102] Fig.57 A schematic diagram of the usage status of a multi-shot processing device for an endoscope provided in another embodiment.

[0103] Fig.58 A schematic diagram of the usage status of a multi-shot processing device for an endoscope provided in another embodiment.

[0104] Fig.59 A schematic diagram of the usage status of a multi-shot processing device for an endoscope provided in another embodiment.

[0105] Fig.60 A schematic diagram of the usage status of a multi-shot processing device for an endoscope provided in another embodiment.

[0106] Fig.61 A schematic diagram of the usage status of a multi-shot processing device for an endoscope provided in another embodiment.

[0107] Endoscope multi-shot treatment device-100; treatment assembly-10; treatment unit-11; capsule-111; clamping hole-1111; opening-1112; clamping arm-112; locking part-1121; locking seat-1122; base-113; third through hole-1131; limiting structure-114; clamping member-12; pin-121; stop bar-1211; folding part-122; spacer-1 3; conveying assembly-20; conveying tube-21; first tube-211; second tube-212; operating member-22; head-221; inner recess-222; shoulder-223; mounting portion-23; first through hole-230; seat-231; stopper-232; tooth-233; fourth through hole-234; flange-235; push tube-25; operating assembly-30; handle-31; second locking part-311; slide groove-312; marking part-313; sliding part-32; connecting rod-321; sliding finger ring-322; thumb ring-323; first limiting part-40,40a,40b; cavity-400; extension part-41a; clamping part-42a; clamping convex part-42a1; inward part-43a; elastic member-44a; first base part-41b; second through hole-41b0; variable part-4 1b1; first protrusion-42b; second limiting portion-50, 50a, 50b, 50c, 50d; second base-51d; second protrusion-52d; first opening-53; second opening-54; pushing assembly-60; fixing seat-61; guide column-611; locking member-62; first locking portion-621; guide groove-622; extending portion-623; reset member-63; crimping member-64. DETAILED DESCRIPTION

[0108] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0109] It should be noted that when a component is considered to be "set on" another component, it can be directly set on the other component or there may be a central component at the same time. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be a central component at the same time. When a component is considered to be "fixed to" another component, it can be directly fixed to the other component or there may be a central component at the same time.

[0110] It should be understood that in the description of the present application, the orientation or positional relationship indicated by the directional words involved is usually based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description. Unless otherwise stated, these directional words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contour of each component itself.

[0111] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0112] It should be noted that "proximal" and "proximal side" are used in this article to refer to the end or side that is closer to the operator during the operation, and is the opposite position or direction of the terms "distal" and "distal side"; "distal" and "distal side" refer to the end or side that is farther from the operator during the operation, and is the opposite position or direction of the terms "proximal" and "proximal side".

[0113] Traditional endoscopic multi-shot treatment devices can continuously release multiple treatment units in the body, and grasp the tissue around the wound to clamp the edge of the wound and achieve the effect of closing the wound. Before the treatment unit is released, it is necessary to adjust the clamping of the lesion site by moving the treatment unit forward and backward and rotating it. When moving the treatment unit forward and backward, the distal end of the treatment unit can switch between the open and closed states to achieve repeated opening and closing of the treatment unit. When rotating the treatment unit, the clamping angle of the treatment unit can be adjusted, and the accuracy of the clamping operation can be improved, so that the lesion can be better aligned and effectively clamped.

[0114] The processing unit enters the body through a 1-2 meter flexible endoscope and is delivered to the lesion. The endoscope will bend at a large angle in the body, which may easily cause the processing unit of the traditional endoscope multi-shot processing device to be unable to turn or unable to transmit torque to the remote processing unit.

[0115] In addition, conventional treatment devices can also release multiple treatment units at one time to clamp multiple lesions, but after the previous treatment unit is released, it is difficult for the next treatment unit to be effectively loaded with the manipulator and repeatedly opened, resulting in multiple functional failures or limitations. Therefore, in order to ensure the clamping operation and stable release of each treatment unit, it is very important to be able to effectively load each treatment unit.

[0116] At present, the processing unit can be repeatedly opened and closed before being released by setting a limiting convex that can be elastically deformed at the proximal end. Specifically, the operating member abuts against the limiting convex and can make the limiting convex expand radially outward. When the operating member is separated from the limiting convex, the limiting convex can be radially contracted. The limiting convex cooperates with the distal end of the delivery tube through elastic deformation, so that when the processing unit repeatedly opens and closes to clamp the lesion, the limiting convex at its proximal end can be constrained by the distal end of the delivery tube. However, in the traditional multiple treatment device, if the degree of radial deformation of the limiting convex is large, the limiting convex after elastic deformation will interfere with the inner wall of the delivery tube, affecting the smooth movement of the processing unit in the delivery tube, and is not conducive to being released from the delivery tube into the biological body; if the degree of radial deformation of the limiting convex is small, it is easy to detach from the distal end of the delivery tube, which is not conducive to repeated opening and closing operations.

[0117] Please also read Figures 1 to 5 One of the preferred embodiments of the present application provides a multi-shot treatment device 100 for an endoscope, which does not interfere with the inner wall of the delivery tube 21 and can effectively perform repeated opening and closing operations. Figure 1 This is a schematic structural diagram of a multi-shot processing device 100 for an endoscope provided in one embodiment at a first viewing angle. Figure 2 for Figure 1 The cross-sectional view of the multi-shot treatment device 100 for an endoscope shown in FIG. Figure 3 for Figure 1 The structure diagram of the multi-shot processing device 100 for endoscope at a second viewing angle is shown in FIG. Figure 4 for Figure 3 The cross-sectional view of the multi-shot treatment device 100 for an endoscope shown in FIG. Figure 5 for Figure 4 An enlarged schematic diagram of .

[0118] The multi-shot treatment device 100 for endoscope includes a transport assembly, an operation assembly, a treatment unit 11, a first position-limiting portion 40b, and a second position-limiting portion 50c.

[0119] Specifically, the delivery assembly includes a delivery tube 21 , a manipulation member 22 and a mounting portion 23 .

[0120] At least one processing unit 11 is contained in the delivery tube 21, so that a plurality of processing units 11 can be continuously released when the delivery tube 21 is inserted into the organism at one time. Preferably, the number of the processing units 11 is set to 2-10.

[0121] The delivery tube 21 is preferably, but not limited to, a spring hose, and a sleeve may be provided on the outside thereof, which may be made of a flexible material. In this embodiment, the delivery tube 21 includes a first tube 211 and a second tube 212 coupled to the proximal end of the first tube 211, the first tube 211 being wound by a flat wire, and the second tube 212 being wound by a round wire. For example, the first tube 211 is wound by a metal wire having a quadrilateral cross section, and relative to the second tube 212 being wound by a metal wire having a round cross section, under the premise of having the same outer diameter, the first tube 211 has a smaller wall thickness and a larger inner diameter, which facilitates the movement of the processing unit 11 in the first tube 211, and at the same time, the first tube 211 has a stronger urging force, which facilitates the clamping operation of the distal end of the delivery tube 21 in the biological body.

[0122] In this embodiment, the first tube 211 and the second tube 212 are fixed by welding. It is understood that in other embodiments, the first tube 211 and the second tube 212 can also be fixed by other means such as screw connection, riveting, adhesive connection or clamping. The advantage of the segmented design is that it can reduce the overall manufacturing cost of the delivery tube 21 while ensuring the necessary driving force and accommodation space.

[0123] The manipulation member 22 is disposed in the delivery tube 21 and can drive the processing unit 11 to switch from the configuration in which the most distal processing unit 11 is combined with the distal end of the delivery tube 21 to the configuration in which the most distal processing unit 11 is separated from the distal end of the delivery tube 21. The manipulation member 22 is a rope, a tube or a single metal wire or tube wound with multiple metal wires having good torque transmission performance, and its diameter is 0.2 mm to 1.0 mm, which can achieve 1:1 torque transmission. The manipulation member 22 can move forward and backward and rotate in the delivery tube 21, and drive the processing unit 11 combined with it to move forward and backward and rotate synchronously.

[0124] The mounting portion 23 is fixed to the distal end of the delivery tube 21 and includes a stopper 232 extending toward the axis of the delivery tube 21. Each processing unit 11 accommodated in the delivery tube 21 needs to pass through the stopper 232 and engage with the stopper before being released, so that the clamp arm 112 can be opened, closed and rotated by the operating member 22. After the processing unit 11 is disengaged from the stopper, it will be released from the delivery tube 21 and enter the biological body.

[0125] The operating assembly includes a handle portion 31 and a sliding portion 32 sleeved on the handle portion 31. The handle portion 31 is combined with the proximal end of the delivery tube 21 to drive the delivery tube 21 to move synchronously. The sliding portion 32 is connected to the proximal end of the manipulation member 22 and drives the manipulation member 22 and the processing unit 11 to move synchronously. In this way, the user can adjust the angle and distance between the processing unit 11 and the lesion by moving the handle portion 31 and the sliding portion 32 according to the needs of the lesion, so as to better align the lesion and clamp the tissue.

[0126] The processing unit 11 has a capsule 111 and a clamp arm 112, and the proximal end of the clamp arm 112 is accommodated in the capsule 111. In the combined configuration, the proximal end of the clamp arm 112 is connected to the manipulation member 22, and can move forward and backward relative to the axial direction of the capsule 111 under the action of the manipulation member 22. At the same time, the distal end of the clamp arm 112 can switch between an open configuration and a closed configuration. After the clamping operation is completed, the processing unit 11 is in a closed configuration and fixed to the capsule 111.

[0127] In order to enable the distal end of the manipulation member 22 to be smoothly and effectively loaded with the subsequent processing unit 11 after releasing the previous processing unit 11, and to enable each processing unit 11 to be repeatedly opened and closed and operated to more efficiently clamp the lesion site, a first limiting portion 40b and a second limiting portion 50c are provided in the multi-shot processing device 100 for endoscope.

[0128] The first limiter 40b is disposed at the proximal end of the capsule 111 and can be elastically deformed or invalidated under the action of external force, corresponding to being engaged or disengaged with the stopper. The first limiter 40 is located proximal to the stopper 232 and is engaged with the stopper 232, and can limit the movement of the processing unit 11 toward the distal end of the delivery tube 21. In the combined configuration, the manipulation member 22 can move the clamp arm 112 between the open configuration and the closed configuration; in the released configuration, the first limiter 40 is deformed under the action of the manipulation member 22 and is disengaged from the stopper 232.

[0129] The first stopper 40b can be set with a relatively small outer diameter to effectively engage with the stopper, so that the processing unit 11 will not interfere with or get stuck on the inner wall of the delivery tube 21, and can ensure that the processing unit 11 moves smoothly in the delivery tube 21. The first stopper 40b and the capsule 111 can be set separately or integrally.

[0130] In this embodiment, the second limiting portion 50c is sleeved on the proximal end of the capsule 111, and passes through the stopper 232 together with the capsule 111, and the first limiting portion 40b is retained at the distal end of the delivery tube 21. In the combined configuration, the second limiting portion 50 located at the distal end of the stopper 232 abuts against the distal end of the stopper 232 to limit the movement of the capsule 111 toward the proximal end of the delivery tube 21; the first limiting portion is located in the stopper 232 and is clamped to the stopper 232, and the operating member 22 can move the clamp arm 112 between the open and closed configurations; in the released configuration, the first limiting portion is deformed under the action of the operating member 22 and is unclamped from the stopper 232. In this way, the first limiting portion 40 can be better clamped with the proximal end of the stopper 232 when expanding outward, avoiding the adverse effects caused by excessive or insufficient radial deformation of the first limiting portion 40.

[0131] It should be noted that in other embodiments, the second limiting portion 50 can also be set at the distal end of the delivery tube 21, and be located at the proximal end of the baffle 232 in the combined configuration; alternatively, the number of the second limiting portions 50 is set to two, and are simultaneously located at the distal end of the delivery tube 21 and the proximal end of the capsule 111.

[0132] That is, the second limiting portion can be disposed at the distal end of the delivery tube 21 and located inside the stopper 232 in the combined configuration, or disposed at the proximal end of the capsule 111 and located outside the stopper 232 in the combined configuration, or disposed at both the distal end of the delivery tube 21 and the proximal end of the capsule 111, thereby playing a double limiting role. Specifically, in the combined configuration, the second limiting portion can expand or contract radially outwardly along the delivery tube 21 and abut against the stopper 232 to allow the capsule 111 to pass through, while the expanded first limiting portion is limited at the proximal end of the delivery tube 21, so that the processing unit 11 can be opened or closed.

[0133] Furthermore, the diameter of the through hole formed by the stopper 232 is larger than the outer diameter of the distal end of the first limiting portion and smaller than the outer diameter of the proximal end of the second limiting portion.

[0134] In the multi-shot treatment device 100 for endoscope, after the clamping operation is completed, the user can pull the sliding finger ring 322 toward the proximal end of the delivery tube 21 to close the clamp arms 112 and lock them in the capsule 111, and then continue to apply a driving force toward the proximal end of the delivery tube 21. When the applied driving force is greater than the preset driving force value, the distal end of the manipulation member 22 is disconnected from the clamp arms 112, the first limiting portion 40b is elastically retracted or deformed, and is disengaged from the engagement with the stopper, thereby completing the release of one treatment unit 11. Repeating this operation, the treatment units 11 accommodated in the delivery tube 21 are continuously released.

[0135] Figure 5 In the embodiment, the mounting portion 23 is fixed to the distal end of the delivery tube 21. The mounting portion 23 and the delivery tube 21 can be integrally formed or separately formed and fixed by screwing, welding, riveting, gluing or other methods.

[0136] The mounting portion 23 includes a seat body 231 and a stopper 232 formed by transitioning from the distal end of the seat body 231 to the axial side. The seat body 231 is sleeved on the distal end of the delivery tube 21 and an inner cavity (not shown) is formed in the seat body 231. A first through hole is opened on the stopper 232 for the bag body 111 and the second limiting portion 50c to pass through, and the first through hole is used to limit the first limiting portion.

[0137] Please also read Figure 6 , Figure 6 for Figure 5 A schematic diagram of the structure in another embodiment. Figure 6 and Figure 5The structures of the second stopper 50c are basically the same, except that the mounting portion 23 further includes a flange 235 disposed at the distal end of the stopper. The flange 235 extends from the distal end surface of the stopper 232 toward the distal end of the mounting portion 23, and a step surface (not shown) is formed between the inner side surface of the flange 235 and the distal end surface of the stopper 232 to limit excessive outward expansion of the proximal end of the second limiting portion 50c.

[0138] Specifically, when the processing unit 11 is in the combined configuration, the capsule 111 and the second limiting portion 50c are passed through the first through hole, and the second limiting portion 50c is held against the distal end surface of the stopper 232. Since the proximal end of the second limiting portion 50c is expanded outward relative to the distal end and has a larger outer diameter, the proximal end of the second limiting portion 50c does not contact the outer side wall of the capsule 111. When the driving force is applied toward the proximal end of the delivery tube 21, the second limiting portion 50c may shake, and the structure is not stable enough.

[0139] The flange 235 can be arranged so that the proximal end of the second limiting portion 50c can be accommodated at the distal end of the mounting portion 23. The inner side surface of the flange 235 can limit the proximal edge of the second limiting portion 50c to prevent it from shaking excessively. This structure is relatively stable.

[0140] Please also read Figure 7 and Figure 8 , Figure 7 A schematic diagram of the structure of the mounting portion 23 provided in one embodiment, Figure 8 The schematic diagram of the structure of the multi-shot treatment device 100 for endoscopes after hiding part of the structure. The mounting portion 23 also includes a tooth portion 233 formed by transitioning from the stopper 232 along the axial direction. A plurality of fourth through holes 234 are provided on the mounting portion 23. The plurality of fourth through holes 234 are arranged at intervals along the circumferential direction of the mounting portion 23. Each fourth through hole 234 passes through the distal end of the tooth portion 233 and transitions to the stopper 232 and the seat body 231, so that the tooth portion 233 can be radially extended and retracted. In this way, the plurality of fourth through holes 234 radially split the tooth portion 233 on the mounting portion 23, and the tooth portion 233 can expand outward when subjected to a radially outward holding force. The arrangement of the plurality of fourth through holes 234 makes it easier for the mounting portion 23 itself to deform elastically.

[0141] Further reading Figure 9(a) to Figure 9(c) Figure 9(a) is a schematic diagram of the three-dimensional structure of the first limiting portion provided in one of the embodiments; Figure 9(b) is a schematic diagram of the first limiting portion provided in one of the embodiments when it is under stress and deformed; Figure 9(c) is a schematic diagram of the first limiting portion provided in one of the embodiments when it is under stress and failed.

[0142] The first limiting portion 40b includes a first base portion 41b and a first convex portion 42b. The first base portion 41b is accommodated at the proximal end of the capsule 111. The first convex portion 42b extends outward from the first base portion 41b until it protrudes from the side wall of the capsule 111, thereby limiting the position near the stopper 232. Preferably, the number of the first convex portions 42b is set to two, and they are respectively connected to the two ends of the first base portion 41b. Considering the force balance of the first limiting portion 40b, in order to better limit the stopper 232, the two first convex portions 42b are located on the same axis and symmetrically arranged.

[0143] Preferably, the plane angle α between the first base 41b and the first convex portion 42b is less than or equal to 30°, and the first base 41b can be bent toward the proximal end or toward the distal end relative to the first convex portion 42b. In order to make the first limit portion 40b easy to deform, the first base 41b and the first convex portion 42b are preferably located in the same plane.

[0144] In order to facilitate the deformation or failure of the first limiting portion 40b so that the processing unit 11 can be separated from the limitation with the baffle 232 and released from the delivery tube 21, a deformation-causing portion 41b1 is provided on the proximal end face of the first base portion 41b, and the deformation-causing portion 41b1 is used to deform or fail the first base portion 41b when the first base portion 41b is subjected to force.

[0145] The changing portion 41b1 may be an opening or a slot provided on the first base portion 41b. Preferably, the changing portion 41b1 is roughly in the shape of a groove and penetrates the proximal end surface of the first base portion 41b. More preferably, the changing portion 41b1 is located on the central axis of the first base portion 41b and is perpendicular to the axial direction of the two first protrusions 42b. It should be noted that the changing portion 41b1 may also be provided at other positions on the proximal end surface of the first base portion 41b and may be in the shape of a non-penetrating hole or slot. Under the premise of not affecting the deformation or failure of the first limiting portion 40b under stress, the present application does not limit the structure and setting position of the changing portion 41b1.

[0146] A second through hole 41b0 is formed at the center of the first base 41b for the manipulation member 22 to pass through. The distal end of the manipulation member 22 passes through the second through hole 41b0 and is combined with the processing unit 11 to drive the processing unit 11 to move synchronously. The distal end of the manipulation member 22 does not rotate relatively in the second through hole 41b0. The distal section of the manipulation member 22 is set to a non-circular structure, and its cross section is roughly rectangular, and the proximal section of the manipulation member 22 is set to a cylindrical structure, which is convenient for synchronous movement in the delivery tube 21 and will not affect other unloaded processing units 11.

[0147] Please also read Fig.10 , Fig.10The schematic diagram of the structure of the manipulation member 22 provided in one embodiment. The distal end of the manipulation member 22 has a head 221, an inner recess 222 and a shoulder 223 in sequence from far to near, so that the manipulation member 22 can drive the processing unit 11 at the farthest end to move synchronously. The outer diameter of the parts of the manipulation member 22 except the head 221 is smaller than the inner diameter of the circular hole.

[0148] In order to facilitate the operation member 22 to pass from the proximal side to the distal side of the first base 41b and retain the changing effect of the first limit portion 40b, while improving the assembly efficiency, the shape of the second through hole 41b0 is adapted to the distal end of the operation member 22, the minimum inner diameter of the second through hole 22 is smaller than the maximum outer diameter of the head 221, and it is roughly a rectangular hole, and the two long sides on the cross section of the second through hole 41b0 are respectively convex and form a circular hole, the diameter of the circular hole is larger than the outer diameter of the proximal end of the operation member 22, so that the proximal end of the operation member 22 can rotate in the second through hole 41b0; the diameter of the circular hole is smaller than the maximum outer diameter of the head 221 of the operation member 22, thereby limiting the movement of the head 221 toward the proximal end of the first base 41b and the rotation in the second through hole 41b0. During assembly, the head 221 passes through the rectangular hole from the proximal side to the distal side of the first base 41b and then rotates the operating member 22. The outer diameter of the components of the operating member 22 other than the head 221 is smaller than the inner diameter of the circular hole, so that the operating member 22 can pass through; after the head 221 rotates a certain angle, the head 221 can abut against the peripheral wall of the second through hole 41b0, so that it cannot be withdrawn from the second through hole 41b0 in the reverse direction. It should be noted that the reverse withdrawal direction refers to the direction opposite to the direction of travel when the head 221 passes through the second through hole 41b0.

[0149] Please also read Figures 11 to 13 , are schematic diagrams of the structures of the second limiting portion 50 provided in different embodiments of the present application. Fig.11 The second limiting portion 50a provided in is a cylindrical spring. Fig.12 The second limiting portion 50 b provided in the embodiment may be a tower spring, the outer diameter of which gradually decreases along the direction toward the distal end of the delivery tube 21 . Fig.13 The second limiting portion 50c provided in the embodiment is provided with a first opening 53, and the first opening 53 transitions along the axial direction of the second limiting portion 50c to provide a deformation margin and facilitate radial elastic deformation of the second limiting portion 50c itself.

[0150] like Fig.12 and Fig.13 As shown, the inner diameter of the second limiting portion 50 b or 50 c decreases from the proximal end of the delivery tube 21 toward the distal end of the delivery tube 21 .

[0151] In one embodiment, the second limiting portion 50 is disposed at the distal end of the delivery tube 21 and is accommodated on the proximal side of the baffle 232. When there is no radial force, the distal inner diameter of the second limiting portion 50 is smaller than the outer diameter of the processing unit 11, and the proximal inner diameter of the second limiting portion 50 is larger than the outer diameter of the processing unit 11.

[0152] In one embodiment, a first opening 53 capable of providing a deformation margin is provided on the side wall of the second limiting portion 50 , and the first opening 53 penetrates the side wall of the second limiting portion 50 ; and / or,

[0153] A second opening 54 is also provided on the side wall of the second limiting portion 50. The second opening 54 extends from the proximal end surface of the side wall of the second limiting portion 50 to the side wall of the second limiting portion 50. The number of the second openings 54 is set to be multiple, and the multiple second openings 54 are arranged at intervals along the circumference of the second limiting portion 50.

[0154] The provision of the first opening 53 and / or the second opening 54 can reduce the radial reaction force of the distal end of the second limiting portion 50 when passing through the stopper 232, so as to facilitate the second limiting portion 50 to be pushed out of the delivery tube 21. It should be noted that after the second limiting portion 50 is pushed out from the stopper 232, its distal end resumes radial expansion to better abut against the distal side of the stopper 232.

[0155] Please also read Fig.14 , Fig.14 The first limiting portion 40b is accommodated at the proximal end of the capsule 111 to abut against the proximal end surface of the stopper 232, and the second limiting portion 50c is sleeved at the proximal end of the capsule 111.

[0156] Please also read Fig.15 and Fig.16 , Fig.15 A schematic diagram of assembling the capsule 111 and the first limiting portion 40b provided in one embodiment; Fig.16 A schematic diagram of the three-dimensional structure of the base 113 provided in one embodiment. In order to facilitate the assembly of the first limiting portion 40b, the processing unit 11 further includes a base 113, which is fixed to the proximal end of the capsule 111. The base 113 has a receiving cavity for receiving the first base portion 41b, and a third through hole 1131 is provided on the side wall of the base 113 for the first convex portion 42b to extend out. Preferably, the base 113 is fixed to the proximal end of the capsule 111 by welding.

[0157] Please also read Figures 17 to 19 , Fig.17 A schematic structural diagram of a second limiting portion 50d provided in one embodiment; Fig.18A schematic diagram of assembling the processing unit 11, the first limiter 40b, and the second limiter 50d provided in one embodiment; Fig.19 for Fig.18 Schematic diagram from another perspective.

[0158] When the second limiting portion 50d is disposed at the distal end of the stopper 232, in addition to the above presentation forms, there may also be the following presentation forms: Fig.14 The second limiting portion 50d includes a second base portion 51d and a second convex portion 52d, the second base portion 51d is accommodated in the capsule 111, the second convex portion 52d extends outward from the second base portion 51d until it extends out of the side wall of the capsule 111, and limits the stopper 232. The second base portion 51d is fixedly connected to the inner wall of the capsule 111, which can be fixed by welding, riveting, clamping, hinged, etc.

[0159] Further, the second base portion 51d may be provided with a first opening 53 to facilitate the second stop portion 50d to pass through the stopper 232. Preferably, the number of the second protrusions 52d is set to be multiple, and they are arranged in an interval inward direction along the circumference of the second base portion 51d. Accordingly, the side wall of the capsule 111 is provided with a plurality of openings 1112 for the second protrusions 52d to extend out.

[0160] Please also read Figure 20 to Figure 22 , Fig. 20 A cross-sectional view of a multi-shot treatment device 100 for an endoscope provided in one embodiment; Fig.21 for Fig. 20 An enlarged schematic diagram of part B in FIG. Fig. 22 A schematic diagram of the assembly of the capsule 111 and the first limiting portion 40a provided in one embodiment.

[0161] In order to enable the distal end of the manipulation member 22 to be able to smoothly and effectively load with the subsequent processing unit 11 after releasing the previous processing unit 11, and to enable each processing unit 11 to be repeatedly opened, closed and operated to clamp the lesion site more efficiently, the inner side surface of the first limiting portion 40a of the preferred embodiment is formed with a cavity 400 for the manipulation member 22 to pass through, the distal end of the manipulation member 22 passes through the cavity 400 and is connected to the processing unit 11, the first limiting portion 40a can be elastically deformed under the abutment of the manipulation member 22, and expand outward along the circumferential direction of the capsule 111 to engage with the distal end of the delivery tube 21; when the manipulation member 22 is driven toward the proximal end of the delivery tube 21 by a large pulling force, the manipulation member 22 will be separated from the cavity 400, the first limiting portion 40a can be contracted along the circumferential direction of the capsule 111 to release the engagement with the distal end of the delivery tube 21, and at this time, the capsule 111 and the first limiting portion 40a can be released from the distal end of the delivery tube 21.

[0162] Specifically, a cavity 400 for the manipulation member 22 to pass through is formed at the center of the first limiting portion 40a, the distal end of the manipulation member 22 passes through the cavity 400 and is connected to the processing unit 11, and the second limiting portion 50c is located at the distal end of the delivery tube 21 and proximal to the stopper 232.

[0163] In further details, the first limiting portion 40a includes an extension portion 41a, a clamping portion 42a and an inwardly-retracted portion 43a, wherein the extension portion 41a is connected to the side wall of the capsule 111, and the clamping portion 42a is connected to the proximal end of the extension portion 41a. The inner side surface of the clamping portion 42a extends inwardly and is formed with a clamping convex portion 42a1. The clamping convex portion 42a1 can be elastically deformed under the abutting action of the operating member 22, and expands outward along the radial direction of the capsule 111 to be clamped with the distal end of the second limiting portion 50c. The outer side surface of the inwardly-retracted portion 43a abuts against the inner side surface of the second limiting portion 50c, the distal end surface of the clamping portion 42a abuts against the proximal end surface of the second limiting portion 50c, and the proximal end surface of the extension portion 41a abuts against the distal end surface of the second limiting portion 50c.

[0164] With such a configuration, the capsule 111 can be relatively stably clamped to the distal end of the stopper 232 without increasing the outer diameter of the capsule 111. In addition, when the first limit portion 40a and the manipulation member 22 are not combined, the clamping portion 42a is elastically retracted, and will not interfere with or jam the inner wall of the delivery tube 21, which is conducive to the free delivery of the processing unit 11 in the cavity of the small delivery tube 21 when the endoscope forceps channel is bent to an extreme of more than 180 degrees.

[0165] Furthermore, the proximal end of the extension portion 41a is flush with the proximal end of the capsule 111, and there is a gap between the extension portion 41a and the side wall of the capsule 111. It is understandable that the extension portion 41a can also be connected to the proximal end of the capsule 111.

[0166] The proximal inner diameter of the central through hole of the second limiting portion 50c is smaller than the outer diameter of the clamping portion 42a and greater than or equal to the outer diameter of the capsule 111. At the same time, the inner diameter of the central through hole of the second limiting portion 50c decreases from the proximal end to the distal end, so that the processing unit 11 is driven to move distally and at the same time generates a driving force for radial expansion of the second limiting portion 50c. After the capsule 111 passes through the second limiting portion 50c, it cannot move forward and backward along the length direction of the delivery tube 21, so that the processing unit 11 is maintained at the distal end of the delivery tube 21 by the first limiting portion 40a and the second limiting portion 50c.

[0167] Furthermore, the inner diameter of the first through hole 230 is larger than the outer diameter of the distal end of the second limiting portion 50c, and smaller than the outer diameter of the proximal end of the second limiting portion 50c.

[0168] In the combined configuration, the distal end of the second limiting portion 50c abuts against the step surface between the clamping portion 42a and the retracted portion 43a, and the proximal end of the stop 232 abuts against the distal end surface of the first limiting portion 40a. The operating member 22 can move the clamping arm 112 between the open configuration and the closed configuration. The outer diameter of the first limiting portion 40a is greater than the larger of the diameter of the first through hole 230 and the inner diameter of the second limiting portion 50.

[0169] In the release configuration, the proximal side of the sliding portion 32 moves to release the combination relationship between the operating member 22 and the processing unit 11 and the first limiting portion 40a. When the operating member 22 is driven toward the proximal end of the delivery tube 21 by a large driving force, the operating member 22 will be separated from the cavity 400, and the first limiting portion 40a can shrink inwardly along the radial direction of the capsule 111 to release the clamping portion 42a from the distal end of the second limiting portion 50c, and the combination of the first limiting portion 40a and the stopper 232 fails. The outer diameter of the first limiting portion 40a is smaller than the smaller of the diameter of the first through hole 230 formed by the stopper 232 and the inner diameter of the second limiting portion 50. At this time, the capsule 111 and the first limiting portion 40a can be released from the distal end of the delivery tube 21.

[0170] The extension portion 41a and the side wall of the capsule body 111 may be integrally formed or separately provided, and connected to the side wall of the capsule body 111 by screwing, welding, riveting or other common fixing methods, which is not limited in this embodiment.

[0171] In this preferred embodiment, the number of first limiting portions 40a is set to be multiple, and the multiple first limiting portions 40a are centrally symmetrically arranged relative to the side wall of the capsule 111. Under the premise of not affecting the elastic expansion or contraction of the first limiting portions 40a, this application does not limit the number and arrangement of the first limiting portions 40a.

[0172] Of course, a plurality of first limiting portions 40a may also be arranged at intervals along the circumferential direction of the capsule 111. Preferably, the number of the first limiting portions 40a is set to two, and they are symmetrically arranged relative to the circumferential direction of the capsule 111. It is understandable that in other embodiments, the number of the first limiting portions 40a may be set to more than three, and the present application does not limit the number and arrangement of the first limiting portions 40a without affecting the elastic expansion and contraction of the first limiting portions 40a.

[0173] Please also read Fig.23 , Fig.23 The schematic diagram of the assembly of the capsule 111 and the first limiting portion 40a provided in one embodiment. In order to facilitate the first limiting portion 40a to be elastically retracted better when it is separated from the operating member 22, the processing unit 11 further includes an elastic member 44a sleeved on the retracted portion 43a, and the inner side surface of the elastic member 44a abuts against the outer side surface of the retracted portion 43a.

[0174] By providing the inwardly-retracted portion 43a on the first limiting portion 40a, the diameter of the first limiting portion 40a can be made smaller without causing interference or jamming to the inner wall of the delivery tube 21. This is beneficial for the processing unit 11 to be freely transported in the cavity of the thin delivery tube 21 when the endoscope clamp channel is bent to an extreme degree of more than 180°.

[0175] The elastic member 44a is preferably, but not limited to, an elastic ring. When the manipulation member 22 passes through the cavity 400 and is connected to the processing unit 11, the inner wall surface of the convex portion 42a1 abuts against the outer wall surface of the manipulation member 22, and the first limit portion 40a and the elastic member 44a are both in an elastically expanded state. When the manipulation member 22 is disconnected from the mutual connection with the processing unit 11 and detached from the cavity 400, the retracted portion 43a contracts radially inwardly under the elastic force of the elastic member 44a, so that the processing unit 11 passes through the stop 232. It is understandable that the first limit portion 40a can also be made of an elastic material and contract radially inwardly by its own resilience.

[0176] Furthermore, in order to ensure that the manipulation member 22 can be stably combined with the subsequent processing unit 11, the processing unit 11 further includes a limiting structure 114 (such as Fig. 20 As shown in the figure, in the closed configuration, the manipulator 22 passes through the limiting structure 114 and is limited by the limiting structure 114 in that the head 221 abuts against the clamping member 12 proximally, so that when the manipulator 22 moves toward the proximal end of the delivery tube 22, the circumferential rotation of the manipulator 22 in the clamp arm 112 is limited. Preferably, the limiting structure 114 is generally tubular, and the cross-sectional shape of the central cavity thereof matches the outer side of the manipulator 22. The radial maximum outer diameter of the limiting structure 114 is smaller than the minimum gap between the two clamp arms 112 in the closed configuration.

[0177] Please also read Fig.24 and Fig.25 , which are schematic diagrams of the structure of the limiting structure 114 provided in different embodiments. Fig.24 A limiting structure 114a having a rectangular cross section is provided. Fig.25 A limiting structure 114b having an elliptical cross-section is provided.

[0178] After the previous treatment unit 11 is released, the manipulation member 22 is driven toward the proximal end of the delivery tube 21. Before the distal end of the manipulation member 22 and the subsequent treatment unit 11 are effectively loaded, if the manipulation member 22 can rotate freely in the delivery tube 21, it will be disadvantageous for the effective loading of the distal end of the manipulation member 22 and the subsequent treatment unit 11. Therefore, the manipulation member 22 can only move relative to the axial direction of the delivery tube 21 under the action of the limiting structure 114 until it is connected with the treatment unit 11. When the clamp arm 112 of the subsequent treatment unit 11 is in the open configuration, the limiting structure 114 can fall from the treatment unit 11 into the biological body.

[0179] It is understandable that the limiting structure 114 can be separately provided with the clamp arm 112, or can be integrally formed with the clamp arm 112. Fig.26 and Fig. 27 , a limiting structure 114c is provided which is integrally formed with the clamp arm 112. The limiting structure 114c is a protrusion provided on the inner side wall of the clamp arm 112, and the protrusion is formed by extending a part of the inner side wall of one clamp arm toward the other clamp arm opposite thereto, so as to reduce the gap between the two clamp arms, and make the gap between the limiting structures 114c smaller than the maximum outer diameter of the operating member 22, so as to limit the circumferential rotation of the operating member 22 relative to the clamp arm 112.

[0180] Please also read Fig.28 , is a schematic diagram of the assembly structure of the clamping member 12, the processing unit 11, and the operating member 22 provided in one embodiment. The processing unit 11 includes two clamping arms 112 that are arranged oppositely and spaced apart, and the processing unit 11 includes a clamping member 12 arranged between the two clamping arms 112. Among them, the inner recess 222 is fixed between the two clamping arms 112 through the clamping member 12, and the clamping member 12 is respectively abutted against the proximal side of the head 221 and the distal side of the shoulder 223. The clamping member 12 can deform outward or fail under a predetermined pressure to release the mutual connection between the inner recess 222 and the two clamping arms 112. When the clamping member 12 is subjected to a force exceeding a preset value, the connection between the clamping member 12 and the inner recess 222 will be slightly deformed or broken, and the operating member 22 will fall off the processing unit 11. Further, the distal end of the shoulder 223 is tilted inward toward the central axis to ensure that the operating member 22 is clamped to the proximal end of the clamping member 12, thereby driving the processing unit 11 to rotate.

[0181] Specifically, the clamping member 12 includes two pins 121, each of which penetrates two clamping arms 112. The pins 121 can clamp against two end surfaces of the inner concave portion 222 and limit the operating member 22. In this embodiment, the two pins 121 can adopt a split structure.

[0182] Furthermore, the pin piece 121 passes through the two clamping arms 112, and the pin piece 121 includes a first end and a second end, and a stop bar 1211 is provided on the first end, and the stop bar 1211 is used to limit the pin piece 121 and fix the first end on the clamping arm 112, and the second end is a movable end. In this way, when the clamping member 12 is subjected to force, the movable end can move toward the first end to provide a deformation margin, so as to facilitate the disconnection of the operating member 22 from the clamping member 12.

[0183] Please also read Fig.29 , is a schematic diagram of the structure of the clamping member 12 provided in one embodiment. In this embodiment, the two pins 121 are integrally formed and arranged in a U shape. Such an arrangement facilitates the installation of the clamping member 12 on the clamp arm 112.

[0184] Please also read Fig.30 , is a schematic diagram of the assembly structure of the clamping member 12, the processing unit 11, and the operating member 22 provided in one embodiment. The clamping member 12 includes a folding portion 122 formed and transitioning from the clamping arm 112 toward the operating member 22. Specifically, each clamping arm 112 is formed with a folding portion 122 transitioning toward two side surfaces of the inner recess 222. The folding portions 122 on the two clamping arms 112 cooperate with each other and are arranged between the clamping arms 112 to clamp against two end surfaces of the inner recess 222. In this preferred embodiment, the folding portion 122 and the clamping arm 112 are integrally formed, and the two folding portions 122 on each clamping arm 112 are formed by a portion of the middle position of the clamping arm 112 transitioning toward the inner recess 222.

[0185] Furthermore, considering that the processing unit 11 needs to remain in the clamping state and be released from the distal end of the delivery tube 21 after clamping the target tissue, it is necessary to set a self-locking function on the processing unit 11 so that the clamp arm 112 can be locked inside the capsule 111. The proximal end of the clamp arm 112 is movably accommodated inside the capsule 111. In the process of pushing the processing unit 111 from the inside of the delivery tube 21 to the outside through the operating member 22, the clamp arm 112 can move relative to the axial direction of the capsule 111 to adjust the distance and angle between the clamp arm 112 and the target tissue, as well as the opening angle of the clamp arm 112. After the clamp arm 112 has clamped the target tissue, the operating member 22 is operated proximally to drive the clamp arm 112 to move synchronously, so that the clamp arm 112 is accommodated in the capsule 111 and locked, and the clamp arm 112 is closed.

[0186] Please also read Figure 31 to Figure 33 , Fig.31 A schematic diagram of the structure of a clamp arm 112 provided in one embodiment; Fig.32 A schematic diagram of the structure of the clamp arm 112 in an active state provided in one embodiment; Fig.33 A schematic structural diagram of the clamp arm 112 in a self-locking state provided in one embodiment.

[0187] In this embodiment, part of the side wall at the proximal end of the clamp arm 112 extends outward and forms a locking portion 1121, part of the side wall of the capsule 111 is bent inward and forms a clamping hole 1111 on the side wall of the capsule 111, and the clamping hole 1111 is adapted to the locking portion 1121 and is used to limit the movement of the clamp arm 112 toward the distal end of the capsule 111. In the active state, the manipulation member 22 passes through the capsule 111 and is connected to the clamp arm 112, at which time the clamp arm 112 can move relative to the axial direction of the capsule 111, and in the self-locking state, the manipulation member 22 is disconnected from the clamp arm 112, and the distal end of the clamp arm 112 is closed and locked in the capsule 111.

[0188] Please also read Fig.34 , which is a schematic diagram of the structure of the clamp arm 112 in an active state provided in one of the embodiments. In this embodiment, by fixing a locking seat 1122 adapted to the proximal end of the clamp arm 112 on the inner wall of the capsule 111, when the operating member 22 is operated in the proximal direction, the proximal end of the clamp arm 112 is clamped to the locking seat by the driving force, and the self-locking of the clamp arm 112 can also be achieved. And the locking seat can be integrally formed with the inner wall of the capsule 111, or it can be set in a split manner. It should be noted that, under the premise of not affecting the self-locking effect of the clamp arm 112, the present application does not limit the self-locking method of the clamp arm 112.

[0189] A spacer 13 (such as Fig. 20 As shown in the figure, the spacer 13 separates two adjacent processing units 11, and the spacer 13 is sleeved on the operating member 22. In this way, each processing unit 11 is separated, which can prevent the processing units 11 from interacting with each other and being damaged; on the other hand, it can prevent the rear processing unit 11 from being overly exposed when the processing unit 11 is pushed out, causing the end surface of the capsule 111 to be unable to be retracted into the delivery tube 21, resulting in device failure. It is worth noting that the inner diameter of the spacer 13 is larger than the outer diameter of the operating member 22, so that the operating member 22 can smoothly reach the position of the next processing unit 11 from the inner hole of the spacer 13, so as to be able to control the next processing unit 11.

[0190] Furthermore, for a conventional multi-processing device for an endoscope, a plurality of processing units are disposed in the delivery tube, and a manipulation member can move forward and backward or rotate to drive the processing unit to switch between a combined configuration and a released configuration. An operating component located at the proximal end of the multi-processing device has a sliding portion that is combined with the proximal end of the manipulation member, and the sliding portion can drive the manipulation member to move. In particular, after the processing unit located at the distal end is released, the sliding portion is operated toward the proximal end to drive the manipulation member to move, so that the manipulation member is combined with the next processing unit until the processing unit is released, and then the manipulation member is repeatedly operated by moving the sliding portion to continue to release the next processing unit.

[0191] However, in actual application, the user operates the multi-shot treatment device for endoscope with one hand and operates the endoscope with the other hand, so the moving stroke s1 of the sliding part is limited by the span of the user's palm (the part connected between the thumb and the index finger), and considering the convenience of operation, the moving stroke s3 of the operating member that the sliding part can drive is relatively limited. In this way, for the treatment unit located relatively close to the proximal end in the delivery tube, it will be difficult to effectively combine with the operating member because its s2 is located outside the moving stroke of the operating member, which will result in that more treatment units cannot be accommodated in the delivery tube, limiting the further application of the multi-shot treatment device for endoscope.

[0192] In view of this, please also refer to Figures 36 to 40 One preferred embodiment of the present application provides a multi-shot processing device 100 for an endoscope that can accommodate more processing units 11 and enable each processing unit to be effectively loaded. The multi-shot processing device 100 for an endoscope includes:

[0193] The processing assembly 10 includes more than two processing units 11, and the proximal end of the processing unit 11 has a first limiting portion that can be deformed or invalidated under the action of an external force;

[0194] The conveying assembly 20 includes a conveying tube 21 for accommodating the processing assembly 11, a pushing tube 25 passing through the conveying tube 21, and a manipulation member 22 passing through the pushing tube 25, wherein the distal end of the pushing tube 25 abuts against the proximal processing unit 11;

[0195] The operating component 30 includes:

[0196] A handle portion 31 coupled to the proximal end of the delivery tube 21;

[0197] A sliding portion 32 coupled to the proximal end of the manipulation member 22 to control the opening, closing and release of the remote processing unit 11; and

[0198] A pushing assembly 60 disposed on the handle portion 31, wherein the pushing assembly 60 includes a fixing seat 61 fixed to the proximal end of the pushing tube 25;

[0199] The handle portion 31 is provided with a slide groove 312 for the support seat 61 to slide, and the handle portion 31 is provided with marks along the slide groove 312 that match with the fixing seat 61 and indicate the number of the processing units 11 .

[0200] Furthermore, a push tube 25 is provided in the delivery tube 21, and the manipulation member 22 runs through the push tube 25. The material of the push tube 25 includes at least one of PTFE (polytetrafluoroethylene), HDPE (high-density polyethylene), and Peek (polyetheretherketone), which can reduce the friction between the manipulation member 22 and the delivery tube 21, so that the manipulation member 22 can move freely in the delivery tube 21. The distal end of the push tube 25 is directly or through the spacer 13 (see Fig.53 ) is against the nearest processing unit 11. The push tube 25 has a small diameter and a limited driving force. In order to prevent the push tube 25 from bending during the pushing process, the spacer 13 can be used to indirectly act on the processing assembly 10.

[0201] By pushing the push tube 25 toward the distal end of the delivery tube 21, the processing unit 11 located at the proximal end of the delivery tube 21 can be moved toward the distal end, so that the operating member 22 can effectively load and operate the processing unit 11 located outside the original loading stroke s2.

[0202] Please also read Figure 41 to Figure 44 In the figure, s1 represents the movement stroke of the sliding finger ring 322, and s3 represents the stroke within which the manipulation member 22 can effectively load the processing unit 11. Usually, s1=s3. However, s2 located at the proximal end of s3 indicates that the manipulation member 22 cannot effectively load the processing unit 11 located within this range by operating the sliding finger ring 322. Therefore, in this embodiment, the pushing tube 25 is moved toward the distal end of the delivery tube 21 to enable the processing units 11 located at s2 to be moved to s3 one by one.

[0203] Please also read Fig.45 The push assembly 60 of this embodiment includes a fixing seat 61, which is sleeved on the push tube 25 and fixedly connected to the push tube 25. The fixing seat 61 can drive the push tube 25 to move relative to the delivery tube 21 under the action of an external force. In this way, by operating the operating member 22 through the sliding finger ring 322 and operating the push tube 25 through the push assembly 60, multiple processing units 11 located in the delivery tube 21 can be effectively loaded.

[0204] The fixing seat 61 is sleeved on the push tube 25. Accordingly, the fixing seat 61 is provided with an axial hole (not shown) for the push tube 25 to pass through, and the fixing seat 61 can be fixed to the push tube 25 by gluing. In other embodiments, the fixing seat 61 and the push tube 25 can also be fixed by riveting, welding, clamping, etc. The fixing seat 61 can also be fixed to the outer wall of the push tube 25. Under the premise of not affecting the synchronous movement of the fixing seat 61 and the push tube 25, the present application does not limit the structure and setting position of the fixing seat 61.

[0205] Furthermore, the pushing assembly 60 also includes a locking member 62 and a reset member 63. The locking member 62 is connected to the fixing seat 61. The reset member 63 is arranged between the fixing seat 61 and the locking member 62 and abuts against the locking member 62. A first locking portion 621 is provided on the locking member 62, and a second locking portion 311 is provided on the handle portion 31. The first locking portion 621 can engage or disengage with the second locking portion 311 to lock or unlock the locking member 62 and the handle portion 31.

[0206] When the locking member 62 and the handle portion 31 are in a locked state, the push tube 25 cannot move. Since the distal end of the manipulation member 22 needs to be operated from the distal end of the delivery tube 21 to the proximal end when loading and combining with the corresponding treatment unit 11, it is necessary to ensure that the treatment unit 11 cannot move toward the proximal end of the delivery tube 21, otherwise the manipulation member 22 and the treatment unit 11 will move toward the proximal end at the same time, making it impossible for the manipulation member 22 to effectively load the treatment unit 11. Therefore, in this embodiment, when the push tube 25 is in a locked state, the treatment assembly 10 cannot move toward the proximal end of the delivery tube 21 due to the restriction of the push tube 25, so that the effective loading of each treatment unit 11 in the locked state can be ensured.

[0207] In this embodiment, the reset member 63 is disposed between the fixing seat 61 and the locking member 62, and one end of the reset member 63 abuts against the fixing seat 61, and the other end abuts against the locking member 62, so that the locking member 62 always has a tendency to engage with the second locking portion 311. It is understandable that in other embodiments, the first locking portion 621 and the second locking portion 311 can also be locked in other ways, such as snap connection, magnetic attraction, etc. Preferably, the first locking portion 621 on the locking member 62 is arranged in a rack.

[0208] In this embodiment, the locking member 62 and the handle portion 31 can be unlocked by pressing the locking member 62 toward the fixing seat 61, and the locking member 62 can be moved along the axial direction of the delivery tube 21, and the fixing seat 61 and the push tube 25 can be moved synchronously. After the pressing force is released, the locking member 62 moves toward the handle portion 31 under the action of the reset member 63, and resumes the lock with the second locking portion 311.

[0209] Further, the number of the second locking parts 311 is set to be multiple and arranged along the moving direction of the fixing seat 61, and is arranged in a continuous rack. In a preferred embodiment, the moving stroke of the first locking part 621 and the second locking part 311 after one unlocking, moving and re-locking corresponds to the length of one processing unit 11.

[0210] Please also read Fig.46 and Fig.47The fixing seat 61 is provided with a guide column 611 extending toward the locking member 62, and the locking member 62 is provided with a guide groove 622 for the guide column 611 to extend into, and the locking member 62 can move relative to the locking member 62 along the axial direction of the guide column 611. In this way, the movement of the locking member 62 is guided, and the unlocking and locking operations can be more stable and reliable.

[0211] The locking member 62 is also provided with an extension portion 623 that can extend from the side wall of the handle portion 31 in the locked configuration, and the side wall of the handle portion 31 is correspondingly provided with a slide groove 312 that matches and moves with the extension portion 623. Preferably, a knurling (not shown) is provided on the end surface of the extension portion 623 to increase the friction of the extension portion 623 and facilitate its movement operation.

[0212] Preferably, the second locking portion 311 is disposed on the inner wall of the handle portion 31, and the first locking portion 621 is located on the end surface of the locking member 62 facing the second locking portion 311. It is understandable that the second locking portion 311 can also be disposed on the side wall of the slide groove 312, and the first locking portion 621 is relatively located on the end surface of the locking member 62 facing the second locking portion 311.

[0213] Please also read Fig.48 For ease of use, a marking portion 313 is provided on the handle portion 31, and the number of the marking portions 313 is set to be more than one, and is used to mark the number of the remaining processing units 11 in the delivery tube 21. The arrangement and number of the marking portions 313 can be adjusted according to the number of the processing units 11 placed in the delivery tube 21. Preferably, the number of the marking portions 313 is set to be a plurality of equidistantly arranged along the moving direction of the fixing seat 61. Further, the marking portion 313 is marked with a number. It is understandable that the marking portion 313 can also be marked in other ways such as pattern marking.

[0214] Furthermore, in order to make the synchronous movement between the fixed seat 61 and the push tube 25 more stable and reliable, the push assembly 60 further includes a crimping piece 64, which is sleeved on the push tube 25 and fixedly connected to the fixed seat 61. Preferably, the number of the crimping pieces 64 is set to two, and the two crimping pieces 64 are respectively fixed to the two ends of the fixed seat 61.

[0215] Please also read Figures 49 to 61 , Figures 49 to 55 A schematic diagram of a multi-shot processing device for an endoscope in different use states provided in one embodiment, Figure 56 to Figure 61 A schematic diagram of the usage status of a multi-shot processing device for an endoscope provided in another embodiment.

[0216] In one embodiment, a method for using a multi-shot treatment device for an endoscope comprises the following steps:

[0217] In the first step, after releasing a processing unit at the distal end of the delivery tube, the manipulation member is driven toward the proximal end of the delivery tube until the manipulation member cannot be further driven toward the proximal end under a certain driving force, and the first user feedback of the combination of the processing unit and the manipulation member is obtained. The first user feedback includes the sound of the manipulation member combining with the processing unit and the operation that cannot be further pulled. At this time, the manipulation member can drive the processing unit to move synchronously;

[0218] In the second step, the manipulation member is driven toward the distal end of the delivery tube until the manipulation member cannot be further driven toward the distal end under a certain driving force, and a second user feedback is obtained that the first limit portion is engaged with the second limit portion. The second user feedback includes the sound of the first limit portion and the second limit portion being engaged and the operation of being unable to be further pulled. The manipulation member can drive the processing unit to move forward and backward and rotate relative to the capsule to repeatedly open, close and rotate the processing unit until the processing unit completes the clamping operation.

[0219] In the third step, after clamping the tissue, the operating member is driven toward the proximal end of the delivery tube, and the first limiting portion is deformed (such as Fig.52 as shown) or fails, releasing the processing unit.

[0220] In one embodiment, a method for using a multi-shot treatment device for an endoscope comprises the following steps:

[0221] The first step is to move the sliding part toward the distal end of the delivery tube so that the multiple processing units located within the moving range of the sliding part are driven by the operating member and released one by one;

[0222] The second step is to press the pushing assembly and move the pushing assembly toward the distal end of the delivery tube, so that the multiple processing units located outside the moving stroke of the sliding part are driven by the pushing tube and released one by one.

[0223] In one embodiment, the method for using the multi-shot processing device for an endoscope is based on the multi-shot processing device for an endoscope, wherein the multi-shot processing device for an endoscope includes a processing component, a conveying component and a pushing component, wherein the processing component includes more than two processing units, and the pushing component includes a conveying tube for accommodating the processing component, a pushing tube passing through the conveying tube, and a manipulation member passing through the pushing tube, wherein the distal end of the pushing tube abuts against the proximal processing unit; the pushing component is fixedly connected to the proximal end of the pushing tube.

[0224] The method of use comprises the following steps:

[0225] The first step is to release the processing unit at the most distal end of the delivery tube, and then drive the manipulation member proximally relative to the delivery tube until a first user feedback indicating that a subsequent processing unit is coupled to the distal end of the manipulation member is obtained;

[0226] Step 2: further driving the push assembly distally relative to the delivery tube, and moving the processing unit toward the distal end of the delivery tube through the push tube fixed to the push assembly, until a second user feedback indicating that the latter processing unit is combined with the distal end of the delivery tube is obtained;

[0227] Step 3: After obtaining the second user feedback, the operating component is driven to allow the processing unit at the farthest side to open and close freely to obtain the desired action posture.

[0228] Furthermore, the pushing assembly includes a fixing seat, a locking member and a reset member, the reset member is held between the fixing seat and the locking member, and the locking member is provided with a first locking portion that matches with a second locking portion on the handle; the second step also includes:

[0229] When the pushing tube is further moved distally relative to the delivery tube driving push assembly, the locking piece is pressed to unlock the first locking portion and the second locking portion; after obtaining second user feedback, the locking piece is released to restore the locking of the first locking portion and the second locking portion.

[0230] In this case, the method for using the multi-shot treatment device for an endoscope includes the following steps:

[0231] The first step is to release the processing unit at the most distal end of the delivery tube, and then drive the manipulation member proximally relative to the delivery tube until a first user feedback indicating that a subsequent processing unit is coupled to the distal end of the manipulation member is obtained;

[0232] Step 2: further drive the pushing assembly distally relative to the delivery tube, and when moving the pushing tube, press the locking piece to unlock the first locking portion and the second locking portion; after obtaining the second user feedback, release the locking piece to restore the locking of the first locking portion and the second locking portion;

[0233] Step 3: After obtaining the second user feedback, the operating component is driven to allow the processing unit at the farthest side to open and close freely to obtain the desired action posture.

[0234] By analogy, the processing units stored in the delivery tube can be released one by one. The user can release multiple processing units to clamp the lesion site by inserting the endoscope with a multi-shot processing device at one time. This can greatly reduce the operation time, buy rescue time for patients and medical staff, and greatly reduce labor intensity and discomfort during endoscopic detection.

[0235] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0236] The above-mentioned embodiments only express several embodiments of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application.

Claims

1. A multi-shot treatment device for an endoscope, characterized in that: include: At least two processing units, including a most distal processing unit and at least one non-distal processing unit, each of the processing units including a capsule and a clamping arm, the clamping arm is accommodated in the capsule, and the proximal end of the capsule has a first limiting portion that can be deformed or invalidated under the action of an external force; A delivery assembly, comprising a delivery tube for accommodating the processing unit, the distal end of the delivery tube having a stop extending toward the axis of the delivery tube, and a manipulation member penetrating the delivery tube, the manipulation member being capable of driving the processing unit to switch from a combined configuration in which the most distal processing unit is combined with the distal end of the delivery tube to a released configuration in which the most distal processing unit is detached from the distal end of the delivery tube; as well as An operating assembly, comprising a handle portion coupled to the proximal end of the delivery tube, and a sliding portion sleeved on the handle portion and coupled to the proximal end of the operating member, the sliding portion being used to drive the operating member to move; Wherein, the distal end of the delivery tube and / or the proximal end of the capsule also has a second limiting portion for abutting against the stopper and capable of expanding and contracting along the radial direction of the delivery tube; The manipulation member can be loaded with each of the treatment units and can move in a direction from the distal end of the delivery tube to the proximal end to switch the most distal treatment unit to a release configuration and combine with a non-distal treatment unit adjacent to the most distal treatment unit; In the combined configuration, the manipulation member is capable of moving the clamp arm between an open configuration and a closed configuration, the manipulation member penetrates the non-distal processing unit and passes through the distal end of the first limiting portion of the most distal processing unit, the distal end of the first limiting portion abuts against and is clamped to the proximal end of the stopper, and the second limiting portion abuts against the stopper to limit the movement of the capsule toward the proximal end of the delivery tube; In the release configuration, the first limit portion is deformed or invalidated under the action of the operating member and is released from the blocking platform. After releasing the previous processing unit, the distal end of the operating member is loaded and combined with the next processing unit.

2. The multi-shot treatment device for endoscope according to claim 1, characterized in that: The second limiting portion is arranged at the distal end of the conveying tube. In the combined configuration, the second limiting portion is located at the proximal end of the stopper. The first limiting portion has an inwardly retracted portion close to the axis of the capsule body, and the inwardly retracted portion is used to abut against the second limiting portion and limit the capsule body.

3. The multi-shot treatment device for endoscope according to claim 2, characterized in that: In the released configuration, the outer diameter of the first limiting portion is smaller than the smaller one of the diameter of the first through hole formed by the stopper and the inner diameter of the second limiting portion; and / or, The first limiting portion has an elastic member sleeved on the retracted portion, the inner side surface of the elastic member abuts against the outer side surface of the retracted portion and is used to retract the retracted portion.

4. The multi-shot treatment device for endoscope according to claim 1, characterized in that: The first limiting portion includes a first base and a first convex portion, the first base is accommodated at the proximal end of the capsule, the first convex portion is connected to the first base and extends outward, the first convex portion extends out of the side wall of the capsule and is limited to the proximal side of the stopper.

5. The multi-shot treatment device for endoscope according to claim 4, characterized in that: The angle between the first base and the first convex portion is less than or equal to 30°, and a change-inducing portion is provided on the proximal end surface of the first base, and the change-inducing portion is used to deform or fail the first base when the first base is subjected to force, and the change-inducing portion passes through the proximal end surface of the first base, wherein: The processing unit further includes a base, which is fixed to the proximal end of the capsule, and has a receiving cavity for receiving the first base, and a third through hole for the first protrusion to extend out is formed on a side wall of the base; or, A head is radially protruded from the distal end of the manipulation member, a second through hole is formed at the center of the first base, the second through hole can allow the head to pass through, and the minimum inner diameter of the second through hole is smaller than the maximum outer diameter of the head.

6. The multi-shot treatment device for endoscope according to any one of claims 1 to 5, characterized in that: In the combined configuration, the first limiting portion is located in the stop platform and is clamped to the stop platform. In the released configuration, the diameter of the first through hole formed by the stop platform is larger than the distal outer diameter of the first limiting portion and smaller than the proximal outer diameter of the second limiting portion.

7. The multi-shot treatment device for endoscope according to claim 2, characterized in that: The inner diameter of the second limiting portion decreases from the proximal end of the delivery tube toward the distal end of the delivery tube. The second limiting portion is arranged at the distal end of the delivery tube and is accommodated on the proximal side of the baffle. In a state without radial force, the inner diameter of the distal end of the second limiting portion is smaller than the outer diameter of the processing unit, and the inner diameter of the proximal end of the second limiting portion is larger than the outer diameter of the processing unit.

8. The multi-shot treatment device for endoscope according to claim 2, characterized in that: In the combined configuration, the distal end of the second limit portion abuts against the retracted portion; in the released configuration, the proximal end side of the sliding portion moves to release the combined relationship between the manipulation member, the processing unit and the first limit portion, so that the combination between the first limit portion and the stopper fails; and / or, The second limiting portion is arranged at the distal end of the conveying tube, and the second limiting portion includes a plurality of teeth arranged at intervals along the circumference of the conveying tube and gathered toward the distal end of the conveying tube, the distal end surface of the teeth is used to abut against the inwardly retracted portion, and the proximal side of the teeth is used to abut against the outwardly expanded first limiting portion.

9. The multi-shot treatment device for endoscope according to claim 1, characterized in that: The second limiting portion includes a second base and a second protrusion, the second base is accommodated in the capsule, the second protrusion is connected to the second base and extends outward, the second protrusion extends out of the side wall of the capsule and limits the stop platform; the number of the second protrusions is set to multiple, and they are arranged at intervals along the circumferential direction of the second base.

10. The multi-shot treatment device for endoscope according to any one of claims 7 to 9, characterized in that: A first opening capable of providing a deformation margin is provided on the side wall of the second limiting portion, and the first opening penetrates the side wall of the second limiting portion; and / or, A second opening is also provided on the side wall of the second limiting portion, and the second opening extends from the proximal end surface of the side wall of the second limiting portion to the side wall of the second limiting portion. The number of the second openings is set to be multiple, and the multiple second openings are arranged at intervals along the circumference of the second limiting portion.

11. The multi-shot treatment device for endoscope according to claim 1, characterized in that: The distal end side of the manipulation member is configured as a head, an inner recess and a shoulder; and, The proximal side of the clamp arm is provided with a clamping piece for the inner concave portion to pass through and be fixed, the clamping piece is respectively abutted against the proximal side of the head and the distal side of the shoulder, and the clamping piece fails when subjected to a predetermined force.

12. The multi-shot treatment device for endoscope according to claim 11, characterized in that: The distal end of the shoulder is tilted inwardly toward the central axis to ensure that the manipulation member is clamped on the proximal end of the clamping member, thereby driving the processing unit to rotate.

13. The multi-shot treatment device for endoscope according to claim 11, characterized in that: The clamping member includes a pair of pins penetrating the proximal end of the clamp arm, the pins include a first end and a second end, the second end is a movable end, the first end is integrally formed into a U shape or a stop bar is provided on the first end, the stop bar is used to limit the pin and fix the first end to the clamp arm; or, The clamping member comprises a folded portion which transitions inwardly from the arm surface of the clamping arm and is formed, and the folded portion and the clamping arm are arranged around and form two end surfaces for clamping against the inner concave portion.

14. The multi-shot treatment device for endoscope according to claim 11, characterized in that: The processing unit further comprises a spacer disposed between the two clamp arms. In the closed configuration, the manipulation member is restricted by the spacer and moves through the spacer in a direction in which the head abuts against the clamping member proximally.

15. The multi-shot treatment device for endoscope according to claim 1, characterized in that: Part of the side wall at the proximal end of the clamp arm extends outward and forms a locking portion, and part of the side wall of the capsule body is bent inward and forms a clamping hole portion on the side wall of the capsule body, and the clamping hole portion is adapted to the locking portion and can limit the movement of the clamp arm toward the distal end of the capsule body; and / or, The baffle is provided with a through hole for the capsule body and the second limiting portion to pass through, the outer diameter of the proximal end of the second limiting portion is larger than the diameter of the baffle through hole, and the second limiting portion can pass through the baffle through hole with interference fit; and / or, At least two processing units are arranged in sequence along the length direction of the delivery tube, and the processing units can leave the inner cavity of the delivery tube one by one and be released from the distal end of the delivery tube one by one.

16. The multi-shot treatment device for endoscope according to claim 1, characterized in that: The delivery tube comprises a first tube relatively located at the distal end and a second tube relatively located at the proximal end, the first tube is fixed to the second tube, the first tube is wound by flat wire, the second tube is wound by round wire, and the first tube is used to accommodate the processing unit; and / or, The operating assembly can drive the non-remote processing units to move in a direction from the proximal end of the delivery tube to the distal end, so that the most distal one of the non-remote processing units reaches the distal end of the delivery tube.

17. A multi-shot treatment device for an endoscope, characterized in that: include: A processing assembly, comprising more than two processing units, at least two of the processing units comprising a most distal processing unit and at least one non-distal processing unit, wherein the proximal end of the processing unit has a first limiting portion that can be deformed or invalidated under the action of an external force; A conveying assembly, comprising a conveying tube for accommodating the processing assembly, a pushing tube passing through the conveying tube, and a manipulation member passing through the pushing tube, wherein the distal end of the pushing tube abuts against the processing unit at the proximal side; Operational components, including: a handle portion coupled to the proximal end of the delivery tube; a sliding portion coupled to the proximal end of the manipulation member to control the opening, closing and release of the distal processing unit; and A pushing assembly disposed on the handle portion, wherein the pushing assembly comprises a fixing seat fixed to the proximal end of the pushing tube; The handle is provided with a slide groove for the fixed seat to slide, and the handle is provided with marks along the slide groove that match the fixed seat and indicate the number of the processing units; The manipulation member can be loaded with each of the treatment units and can move in a direction from the distal end of the delivery tube to the proximal end to switch the most distal treatment unit to a release configuration and combine with a non-distal treatment unit adjacent to the most distal treatment unit; In the combined configuration, the manipulation member passes through the non-remote processing unit and passes through the distal end of the first limiting portion of the most distal processing unit; in the released configuration, the distal end of the manipulation member is loaded and combined with the subsequent processing unit after releasing the previous processing unit.

18. The multi-shot treatment device for endoscope according to claim 17, characterized in that: The pushing assembly further includes a locking member and a reset member, wherein the locking member is connected to the fixing seat, the reset member is disposed between the fixing seat and the locking member and abuts against the locking member, the locking member is provided with a first locking portion, the handle portion is provided with a second locking portion, the first locking portion can be engaged with or disengaged from the second locking portion, so that the locking member and the handle portion are locked or unlocked; wherein: The fixing seat is provided with a guide column extending toward the locking member, the locking member is provided with a guide groove for the guide column to extend into, and the locking member can move relative to the locking member along the axial direction of the guide column; or, The locking member is also provided with an extension portion which can extend out of the side wall of the handle portion in a locked configuration, and the side wall of the handle portion is correspondingly provided with a sliding groove for the extension portion to extend and slide.

19. The multi-shot treatment device for endoscope according to claim 17, characterized in that: The handle portion is provided with a marking portion, and the number of the marking portions is set to be a plurality of portions that are equidistantly arranged along the moving direction of the fixing seat; the marking portion is a digital mark, and the digital mark is used to indicate the number of the remaining processing units.

20. The multi-shot treatment device for endoscope according to claim 17, characterized in that: The pushing assembly also includes a crimping piece, which is sleeved on the pushing tube and fixedly connected to the fixing seat; the number of the crimping pieces is set to two, and the two crimping pieces are respectively fixed at two ends of the fixing seat.

Images