Rope pusher assembly and knot pusher

Abstract

The present application relates to a rope-pushing and knot-pushing assembly, comprising a knot-pushing device and a binding wire. The binding wire comprises a main body segment and a movable segment connected to the main body segment, and one end of the movable segment away from the main body segment is looped on the main body segment and arranged as a knot, so that the movable segment forms a movable loop. The knot-pushing device is provided with a threading channel, which passes through the opposite ends of the knot-pushing device and forms a first through-hole and a second through-hole respectively. The main body segment is movably arranged in the threading channel, and the knot-pushing device is also provided with a first pushing surface, which can be against the knot, so that the main body segment moves in the direction from the first through-hole to the second through-hole, and the ring size of the movable loop is reduced. In this way, the movable knot can be pushed by the knot-pushing device to reduce the ring size of the movable loop, and the artificial blood vessel and the outlet pipe of the blood pump can be positioned quickly and stably, thereby improving the consistency of the binding effect. The present application also provides a knot-pushing device.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a knot pusher assembly and a knot pusher. Background Art

[0002] Artificial blood vessels are substitutes for many severely narrowed or occluded blood vessels. They are mostly artificially made of synthetic materials such as nylon, polyester, and polytetrafluoroethylene (PTFE). Artificial blood vessels can be used for vascular bypass surgery throughout the body. The clinical application of large-caliber and medium-caliber artificial blood vessels has achieved relatively satisfactory results. In some surgeries, the use of artificial blood vessels needs to be connected to the outlet tube of the blood pump. The conventional connection method is to bind the artificial blood vessels with a thin wire, and then connect the artificial blood vessels to the outlet tube of the blood pump. However, the manual binding method involves the differentiation of operating techniques. Due to the uneven operating techniques and technologies, the binding effect is also differentiated, and it is easy to have various problems such as not being tied tightly, too many binding joints, and the clamp cannot be installed. These are all caused by inconsistent binding effects. Summary of the invention

[0003] Based on this, it is necessary to provide a rope knot pusher assembly and knot pusher that can improve the consistency of binding effect in order to address various technical problems such as inconsistent manual binding effects between artificial blood vessels and the outlet tubes of blood pumps, which lead to loose binding, too many binding joints, and insufficient clamping parts.

[0004] In a first aspect, the present application provides a rope-pushing and knot-pushing assembly, the rope-pushing and knot-pushing assembly comprising:

[0005] A binding line, the binding line comprising a main line segment and a movable line segment connected to the main line segment, one end of the movable line segment away from the main line segment is looped on the main line segment and arranged into a movable knot, so that the movable line segment forms a movable loop; and

[0006] A knot pusher, wherein the knot pusher is provided with a threading channel, the threading channel passes through the opposite ends of the knot pusher and respectively forms a first through opening and a second through opening, the main body line segment is movably passed through the threading channel, and the knot pusher is provided with a first pushing surface, the first pushing surface can be abutted against the movable knot to reduce the ring size of the movable ring when the main body line segment moves from the first through opening to the second through opening.

[0007] In one embodiment, the knot pusher comprises a main body tube and a push piece assembled at the end of the main body tube, wherein:

[0008] The first pushing surface is provided on the push member, and the first through-hole is opened on the push member; or the second through-hole is opened on the push member.

[0009] In one embodiment, the push member has a head end and a tail end opposite to each other, and the tail end of the push member can be connected to the end of the main body tube, wherein the cross-sectional area of ​​the push member gradually decreases from the tail end to the head end.

[0010] In one embodiment, the threading channel includes a first through hole and a second through hole that are connected to each other, and the first through hole and the second through hole are both arranged on the push member. The first through hole passes through one end of the push member to form one of the first through opening and the second through opening, and the aperture of the second through hole gradually decreases from the tail end to the head end.

[0011] In one embodiment, the knot pusher includes a main body tube and a push piece assembled at an end of the main body tube, and the main body tube and the push piece are detachably connected.

[0012] In one embodiment, the push member has a head end and a tail end relative to each other, the head end of the push member is provided with one of the first through opening and the second through opening, and the tail end of the push member is provided with a plug-in tube, and the plug-in tube is plug-fitted with the end of the main body tube.

[0013] In one embodiment, there are two push members, which are respectively assembled at opposite ends of the main body tube, one of which is provided with the first through opening and the first pushing surface located at the periphery of the first through opening; the other push member is provided with the second through opening and the second pushing surface located at the periphery of the second through opening.

[0014] In one embodiment, the number of the movable line segments is two, the main line segment is connected between the two movable line segments, each of the movable line segments is provided with a movable knot and a movable ring, the first pushing surface can be abutted against one of the movable knots, and the second pushing surface can be abutted against the other movable knot.

[0015] In one of the embodiments, an anti-slip portion is provided on the outer peripheral surface of the knot pusher.

[0016] In a second aspect, the present application further provides a knot pusher capable of reducing the size of a movable loop of a binding wire, wherein the binding wire comprises a main wire segment and a movable wire segment connected to the main wire segment, and one end of the movable wire segment away from the main wire segment is looped on the main wire segment and arranged to form a movable knot, so that the movable wire segment forms a movable loop;

[0017] The knot pusher is provided with a threading channel for the main line segment of the binding line to be movably passed through the threading channel, and the threading channel passes through the opposite ends of the knot pusher and respectively forms a first through opening and a second through opening; the knot pusher is provided with a first pushing surface, and the first pushing surface can be abutted against the movable knot, so that when the main line segment moves from the first through opening to the second through opening, the ring size of the movable ring is reduced.

[0018] In the above-mentioned rope push-knot assembly, one end of the movable line segment away from the main body line segment is looped on the main body line segment and is set to a movable knot, so that the movable line segment can form a movable loop; the main body line segment is movably arranged in the threading channel opened by the pusher, and the first pushing surface of the pusher is against the movable knot. When the medical staff pulls the main body line segment to move from the first through-hole to the second through-hole, the ring size of the movable loop can be reduced. When the rope push-knot assembly is used to fix an artificial blood vessel, the medical staff can put the movable loop on the periphery of the artificial blood vessel and the outlet tube under the condition that the artificial blood vessel is set on the outlet tube, and then pull the main body line segment to reduce the ring size of the movable loop, thereby fixing the artificial blood vessel to the outlet tube of the blood pump. After the movable loop fixes the artificial blood vessel to the outlet tube of the blood pump, the binding line can be cut from the movable knot. Therefore, by using the rope push knot assembly to reduce the size of the active ring, the artificial blood vessel and the outlet tube of the blood pump can be quickly and stably positioned, avoiding differentiated operating techniques and improving the consistency of the binding effect. Moreover, after the fixation is completed, the binding wire is cut off from the active knot, so that the binding wire left on the artificial blood vessel has only one active knot (joint), which will not affect the installation of the clamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A stereoscopic view of a rope-pushing and knot-pushing assembly provided for one embodiment of the present application.

[0020] Figure 2 A plan view of a rope push knot assembly provided for one embodiment of the present application.

[0021] Figure 3 For Figure 2 The cross-sectional view of the rope push knot assembly along the AA direction is shown.

[0022] Figure 4 For Figure 2 The cross-sectional view of the rope push knot assembly along the BB direction is shown.

[0023] Figure 5 An exploded view of a rope-pushing and knot-pushing assembly provided in accordance with one embodiment of the present application.

[0024] Figure Number:

[0025] 100, rope knot pushing assembly; 1000, knot pusher; 2000, binding wire; 1001, first through hole; 1002, first pushing surface; 1003, second through hole; 1004, second pushing surface; 1000a, threading channel; 1100, main body tube; 1200, push piece; 1300, plug-in tube; 1110, anti-slip part; 1201, first through hole; 1202, second through hole; 1210, head end; 1220, tail end; 2100, movable rope knot; 2200, movable ring; 2000a, main body line segment; 2000b, movable line segment. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0027] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0028] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0029] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0030] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0031] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0032] See also Figures 1 to 5As shown, the present application provides a rope push-knot assembly 100, which includes a pusher 1000 and a binding line 2000. The binding line 2000 includes a main line segment 2000a and an active line segment 2000b connected to the main line segment 2000a, and one end of the active line segment 2000b away from the main line segment 2000a is looped on the main line segment 2000a and is set to form an active knot 2100, so that the active line segment 2000b forms an active loop 2200. The knot pusher 1000 is provided with a threading channel 1000a, which passes through the opposite ends of the knot pusher 1000 and respectively forms a first through hole 1001 and a second through hole 1003. The main line segment 2000a of the binding line 2000 is movably arranged in the threading channel 1000a. The knot pusher 1000 is also provided with a first pushing surface 1002, which can be abutted against the movable knot 2100 to reduce the ring size of the movable ring 2200 when the main line segment 2000a moves in the direction from the first through hole 1001 to the second through hole 1003.

[0033] Specifically, the medical staff can position the knot pusher 1000, and then pull the main body line segment 2000a to move it in the direction from the first through hole 1001 to the second through hole 1003, so that the first pushing surface 1002 pushes the movable knot 2100 to move, thereby reducing the size of the active ring 2200. Alternatively, the medical staff can position the main body line segment 2000a, and then use the knot pusher 1000 to push the movable knot 2100 to move, so that the main body line segment 2000a moves relative to the knot pusher 1000 in the direction from the first through hole 1001 to the second through hole 1003, thereby reducing the size of the active ring 2200. It can be understood that the main body segment 2000a is movably arranged in the threading channel 1000a, which means that the opposite ends of the main body segment 2000a respectively pass through the first through hole 1001 and the second through hole 1003 and extend outward, and the main body segment 2000a can move relative to the knot pusher 1000, so that medical personnel can pull the main body segment 2000a to move it in the direction from the first through hole 1001 to the second through hole 1003.

[0034] In the above-mentioned rope-pushing and knot-pushing assembly 100, one end of the movable line segment 2000b away from the main line segment 2000a is looped on the main line segment 2000a and is arranged to form a movable knot 2100, so that the movable line segment 2000b can form a movable loop 2200; the main line segment 2000a is movably arranged in the threading channel 1000a opened by the knot-pushing device 1000, and the first pushing surface 1002 of the knot-pushing device 1000 can be against the movable knot 2100, so that when the first pushing surface 1002 is against the movable knot 2100, the medical staff can position the knot-pushing device 1000, and then pull the main line segment 2000a to move along the direction from the first through hole 1001 to the second through hole 1003, so that the first pushing surface 1002 pushes the movable knot 2100 to move, thereby reducing the ring size of the movable loop 2200. When the rope push knot assembly 100 is used to fix an artificial blood vessel, medical personnel can put the movable loop 2200 on the periphery of the artificial blood vessel and the outlet tube under the condition that the artificial blood vessel is placed on the outlet tube, and then push the movable knot 2100 to reduce the ring size of the movable loop 2200, thereby fixing the artificial blood vessel to the outlet tube of the blood pump.

[0035] After the movable collar 2200 fixes the artificial blood vessel to the outlet tube of the blood pump, the binding wire 2000 can be cut off from the movable knot 2100. Therefore, by using the collar and knot assembly 100 to reduce the ring size of the movable collar 2200, the artificial blood vessel and the outlet tube of the blood pump can be positioned quickly and stably, avoiding differentiated operation techniques and improving the consistency of the binding effect. Moreover, after the fixation is completed, the binding wire 2000 is cut off from the movable knot 2100, so that the binding wire 2000 left on the artificial blood vessel has only one movable knot 2100, which will not affect the installation of the clamp.

[0036] Specifically, the threading channel 1000a can be a straight channel, a curved channel or a channel of other regular or irregular shapes. The function of the threading channel 1000a is to allow a part of the binding wire 2000 to pass through it. Therefore, as long as a part of the binding wire 2000 can be passed through the threading channel 1000a and the binding wire 2000 can move in the threading channel 1000a, technical personnel in this field can set the shape and size of the threading channel 1000a according to actual needs, and no limitation is made here.

[0037] It should be noted that the main line segment 2000a and the movable line segment 2000b are different sections distinguished from the binding line 2000, rather than two independent line segments connected to each other to form the binding line 2000.

[0038] Since the movable collar 2200 is a part of the binding wire 2000, its shape can be changed under the action of external force, that is, the movable collar 2200 has an indefinite shape. The ring size of the movable collar 2200 refers to the area enclosed by the movable collar 2200 when it is in a ring shape.

[0039] like Figure 5 In the exploded view shown, the movable knot 2100 can move along the main line segment 2000a and the movable line segment 2000b, and at any position on the binding line 2000, the movement of the movable knot 2100 can adjust the size of the ring of the movable ring 2200. When the movable knot 2100 moves along the movable line segment 2000b toward the side away from the main line segment 2000a, the size of the ring of the movable ring 2200 decreases; when the movable knot 2100 moves along the main line segment 2000a toward the side away from the movable line segment 2000b, the size of the ring of the movable ring 2200 increases. Specifically, the movable knot 2100 formed by tying a knot has an inner hole for the main line segment 2000a to penetrate, and when the main line segment 2000a moves in the inner hole of the movable knot 2100, the size of the ring of the movable ring 2200 will also change.

[0040] In one embodiment, the knot pusher 1000 comprises a main body tube 1100 and a push piece 1200 assembled on the end of the main body tube 1100. The main body tube 1100 and the push piece 1200 are detachably connected, so that the main body tube 1100 and the push piece 1200 can be manufactured by different processes respectively, and then the main body tube 1100 and the push piece 1200 are connected to form the knot pusher 1000, which reduces the production difficulty of the knot pusher 1000. In the present embodiment, the main body tube 1100 and the push piece 1200 can be connected by plugging or by threaded connection or other modes, and of course, other detachable connected modes can also be adopted.

[0041] In one embodiment, the first pushing surface 1002 is provided on the pushing member 1200, and the first through hole 1001 is provided on the pushing member 1200; or, the second through hole 1003 is provided on the pushing member 1200. Specifically, when the pushing member 1200 is used to push the movable knot 2100, the pushing member 1200 may be provided with the first pushing surface 1002 and the first through hole 1001, wherein the first pushing surface 1002 may be provided on the periphery of the first through hole 1001, that is, the first pushing surface 1002 may be provided around the first through hole 1001. When the pushing member 1200 is not used to push the movable knot 2100, that is, the pushing member 1200 does not have the function of pushing the movable knot 2100, the pushing member 1200 may only have the second through opening 1003, and no pushing surface for pushing the movable knot 2100 is provided. At this time, a pushing member (not shown) may be provided at the end of the main tube 1100 away from the pushing member 1200, and the first pushing surface 1002 and the first through opening 1001 may be provided on the pushing member.

[0042] In this embodiment, there are two push members 1200, which are respectively assembled at opposite ends of the main body tube 1100, one of which is provided with a first through hole 1001 and a first pushing surface 1002 located at the periphery of the first through hole 1001; the other push member 1200 is provided with a second through hole 1003 and a second pushing surface 1004 located at the periphery of the second through hole 1003. When the number of the movable knot 2100 and the movable ring 2200 are both one, one of the push members 1200 can be selected to push the movable knot 2100 to move. When the number of the movable knot 2100 and the movable ring 2200 are both two, one movable knot 2100 can be pushed to move by each of the two push members 1200.

[0043] The two push members 1200 can be detachably connected to the main body tube 1100, so that the two push members 1200 can form an integral body with the main body tube 1100, which is convenient for the binding wire 2000 to pass through the two push members 1200 and the main body tube 1100 in sequence, reducing the difficulty of the binding wire 2000 passing through the knot pusher 1000. In another embodiment, the two push members 1200 and the main body tube 1100 can also be integrally arranged to ensure the connection strength between the parts, and the manufacturing process of the knot pusher 1000 can be simplified.

[0044] In this embodiment, there are two push members 1200, two active line segments 2000b, the main line segment 2000a is connected between the two active line segments 2000b, each active line segment 2000b is provided with a movable knot 2100 and a movable ring 2200, the first pushing surface 1002 can be against one of the movable knots 2100, and the second pushing surface 1004 can be against the other movable knot 2100. In this way, the same rope push knot assembly 100 can be used twice during the operation, that is, each movable ring 2200 can be used once, thereby improving the utilization rate of the rope push knot assembly 100. In addition, when the first movable ring 2200 is used, the other movable ring 2200 can also be inserted by fingers to prevent slipping, so as to facilitate the operation of medical personnel and improve the reliability of the rope push knot assembly 100.

[0045] In one embodiment, the push member 1200 has a head end 1210 and a tail end 1220 opposite to each other, and the head end 1210 and the tail end 1220 can be used to determine the direction of the push member 1200, wherein the head end 1210 is an end of the push member 1200 away from the main body tube 1100, and the tail end 1220 is an end of the push member 1200 close to the main body tube 1100. The head end 1210 of the push member 1200 is provided with one of the first through hole 1001 and the second through hole 1003. The tail end 1220 of the push member 1200 can be used to connect with the end of the main body tube 1100.

[0046] In one embodiment, the cross-sectional area of ​​the push piece 1200 from the tail end 1220 to the head end 1210 gradually decreases, and the head end 1210 of the push piece 1200 is smaller and the tail end 1220 is larger, so as to more clearly show the movable knot 2100, which is convenient for medical personnel to observe the position of the movable knot 2100 in real time during operation (when the movable knot 2100 and the artificial blood vessel are pushed into place), and avoid the push piece 1200 being too large to block the field of vision. In addition, the cross-sectional area of ​​the push piece 1200 from the tail end 1220 to the head end 1210 gradually decreases, and the contact between the head end 1210 of the push piece 1200 away from the main tube 1100 and the artificial blood vessel is point contact, which ensures the squeezing force and further facilitates the fixation of the artificial blood vessel to the outlet tube of the blood pump.

[0047] In one embodiment, the push member 1200 may have a conical outer contour. In another embodiment, the push member 1200 may have a semi-ellipsoidal outer contour, which may be set according to actual conditions.

[0048] The threading channel 1000a includes a first through hole 1201 and a second through hole 1202 which are connected to each other. The first through hole 1201 and the second through hole 1202 are both arranged in the push member 1200 and are arranged in sequence from the tail end 1220 to the head end 1210. The first through hole 1201 passes through one end of the push member 1200 to form one of the first through opening 1001 and the second through opening 1003. The aperture of the second through hole 1202 gradually decreases from the tail end 1220 to the head end 1210, so that the gradual hole shape of the second through hole 1202 is adapted to the tapered outer contour of the push member 1200 and can facilitate the binding wire 2000 to pass through it smoothly. In the present application, the aperture of the first through hole 1201 remains unchanged. In other embodiments, the diameter of the first through hole 1201 may be gradually reduced from the tail end 1220 to the head end 1210 , and may be specifically set according to actual conditions.

[0049] In one of the embodiments, the tail end 1220 of the push piece 1200 is provided with a plug-in cylinder 1300, and the inner hole of the plug-in cylinder 1300 is connected to the second through hole 1202 of the push piece 1200. The tail end 1220 of the push piece 1200 can be plug-fitted with the end of the main tube 1100 through the plug-in cylinder 1300, that is, the tail end 1220 and the plug-in cylinder 1300 provided at the tail end 1220 are both in contact with the main tube 1100, which increases the contact area between the push piece 1200 and the main tube 1100, thereby increasing the reliability of the connection between the push piece 1200 and the main tube 1100.

[0050] In one embodiment, an anti-skid portion 1110 is provided on the outer circumference of the main body tube 1100, and the anti-skid portion 1110 can prevent slipping during the operation of the knot pusher 1000, thereby ensuring the reliability of the operation. The anti-skid portion 1110 can be a plurality of evenly distributed protrusions, grooves or other structures with anti-skid functions, which can prevent slipping during the operation of the knot pusher 1000.

[0051] The present application also provides a knot pusher 1000, which can reduce the size of the loop of the active loop 2200 of the binding wire. The binding wire 2000 includes a main line segment 2000a and an active line segment 2000b connected to the main line segment 2000a. One end of the active line segment 2000b away from the main line segment 2000a is looped on the main line segment 2000a and is arranged to form an active knot 2100, so that the active line segment 2000b forms an active loop 2200;

[0052] The knot pusher 1000 is provided with a threading channel 1000a for the main line segment 2000a of the binding wire to be movably passed through the threading channel 1000a. The threading channel 1000a passes through the opposite ends of the knot pusher 1000 and respectively forms a first through opening 1001 and a second through opening 1003; the knot pusher 1000 is also provided with a first pushing surface 1002, and the first pushing surface 1002 can be abutted against the movable knot 2100, so that when the main line segment 2000a moves from the first through opening 1001 to the second through opening 1003, the ring size of the movable ring 2200 is reduced.

[0053] 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.

[0054] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, 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. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A rope push knot assembly, characterized in that: The rope-pushing and knot-pushing assembly comprises: A binding line, the binding line comprising a main line segment and a movable line segment connected to the main line segment, one end of the movable line segment away from the main line segment is looped on the main line segment and arranged into a movable knot, so that the movable line segment forms a movable loop; and A knot pusher, wherein the knot pusher is provided with a threading channel, wherein the threading channel passes through the opposite ends of the knot pusher and respectively forms a first through opening and a second through opening, wherein the main body line segment is movably arranged in the threading channel; the knot pusher is also provided with a first pushing surface, wherein the first pushing surface can be abutted against the movable knot so as to reduce the ring size of the movable ring when the main body line segment moves in the direction from the first through opening to the second through opening.

2. The rope push knot assembly according to claim 1, characterized in that: The knot pusher comprises a main body tube and a push piece assembled at the end of the main body tube, wherein: The first pushing surface is provided on the push member, and the first through-hole is opened on the push member; or the second through-hole is opened on the push member.

3. The rope push knot assembly according to claim 2, characterized in that: The push member has a head end and a tail end opposite to each other, and the tail end of the push member can be connected to the end of the main body tube, wherein the cross-sectional area of ​​the push member gradually decreases from the tail end to the head end.

4. The rope push knot assembly according to claim 3, characterized in that: The threading channel includes a first through hole and a second through hole that are connected to each other. The first through hole and the second through hole are both arranged on the push member. The first through hole passes through one end of the push member to form one of the first through opening and the second through opening. The aperture of the second through hole gradually decreases from the tail end to the head end.

5. The rope push knot assembly according to claim 1, characterized in that: The knot pusher comprises a main body tube and a push piece assembled at the end of the main body tube, and the main body tube and the push piece are detachably connected.

6. The rope push knot assembly according to claim 5, characterized in that: The push member has a head end and a tail end opposite to each other. The head end of the push member is provided with one of the first through opening and the second through opening. The tail end of the push member is provided with an insert tube, and the insert tube is plug-fitted with the end of the main body tube.

7. The rope push knot assembly according to claim 5, characterized in that: There are two push members, which are respectively assembled at the opposite ends of the main body tube. One of the push members is provided with the first through opening and the first pushing surface located at the outer periphery of the first through opening; the other push member is provided with the second through opening and the second pushing surface located at the outer periphery of the second through opening.

8. The rope push knot assembly according to claim 7, characterized in that: The number of the movable line segments is two, the main line segment is connected between the two movable line segments, each of the movable line segments is provided with a movable knot and a movable ring, the first pushing surface can be abutted against one of the movable knots, and the second pushing surface can be abutted against the other movable knot.

9. The rope push knot assembly according to any one of claims 1 to 8, characterized in that: The outer peripheral surface of the knot pusher is provided with an anti-slip portion.

10. A knot pusher capable of reducing the size of a movable loop of a binding wire, wherein the binding wire comprises a main wire segment and a movable wire segment connected to the main wire segment, and one end of the movable wire segment away from the main wire segment is looped on the main wire segment and arranged into a movable knot, so that the movable wire segment forms the movable loop; characterized in that: The knot pusher is provided with a threading channel for the main line segment of the binding line to be movably passed through the threading channel, and the threading channel passes through the opposite ends of the knot pusher to form a first through opening and a second through opening respectively; the knot pusher is also provided with a first pushing surface, which can be abutted against the movable knot, so that when the main line segment moves from the first through opening to the second through opening, the ring size of the movable ring is reduced.

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