Wire binding device and method for restraining wire of alimentary canal stent, conveying system and application

Abstract

The invention provides a wire binding device and method for a restraint wire of a digestive tract stent, a conveying system and application, and relates to the technical field of medical instruments. The binding wire fixing seat is arranged, the binding wire fixing seat can be connected with the conveying device, and the traction wire in the conveying device is led out to the binding wire fixing seat of the binding wire device and contained in the first binding wire groove, so that the traction wire is prevented from slipping off due to stress and being separated from fixation of the binding wire device. Due to the fact that the wire binding device is arranged, force borne by the restraining wire can act on the wire binding device preferentially, connection between the operating handle and the restraining wire fixing piece cannot be directly affected, and therefore the fixing stability of the restraining wire can be improved in the mode that the restraining wire firstly passes through the wire binding device and then is limited through the operating handle and the restraining wire fixing piece. And the traction wire is prevented from slipping.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a wire binding device, method, conveying system and application of a restraining wire of a digestive tract stent. Background Art

[0002] A digestive tract stent is an auxiliary medical device that can be implanted in the digestive tract, and a common one is a gastric bypass stent. A gastric bypass stent generally includes a stent part in the body and a delivery system for delivering the stent part into the body. The structure used to connect the stent part in the delivery system is a restraining line, one end of which is fixed to the stent part, and the other end is fixed outside the body, so that the stent part of the gastric bypass stent can be stably, safely and conveniently delivered to the corresponding position in the stomach.

[0003] The existing method of fixing the restraint wire on the outside of the body is mainly to place the restraint wire between the operating handle and the fixing knob, and to achieve the fixing on the outside of the body through the threaded connection process of the operating handle and the fixing knob. However, this connection method is not stable. When the restraint wire is pulled by force, it is very easy to cause the threaded connection between the operating handle and the fixing knob to loosen, and the fixing knob is unscrewed, so that the position of the stent part in the body cannot be stably controlled.

[0004] In view of this, the present invention is proposed. Summary of the invention

[0005] The object of the present invention is to provide a wire binding device, method, conveying system and application of a digestive tract stent's restraining wire, which can stably fix the restraining wire, thereby stably controlling the position of the stent part in the body, and the wire binding method is simple and firm.

[0006] The embodiment of the present invention is achieved as follows:

[0007] In a first aspect, the present invention provides a wire binding device for a digestive tract stent, comprising a wire binding fixing seat, a telescopic member, a pushing member and an elastic component;

[0008] The wire binding fixing seat comprises a fixing seat body and a connecting piece, one end of the connecting piece is fixed to the lower surface of the fixing seat body, and the other end opposite thereto is configured to be connected to a conveying device of the digestive tract stent, and the axis of the fixing seat body intersects with the axis of the conveying device;

[0009] A first wire binding groove is provided on the side surface of the fixing seat body;

[0010] The upper surface of the fixing seat body is provided with a mounting groove along the axial direction of the fixing seat body, and the two ends of the fixing seat body along the axial direction are an open end and a blind end respectively, and the mounting groove is connected with the end surface of the open end;

[0011] The telescopic member includes a telescopic member body, the telescopic member body can selectively slide in the installation groove, the axis of the telescopic member body is parallel to the axis of the fixed seat body, the two axial ends of the telescopic member body are respectively a first telescopic end and a second telescopic end, the second telescopic end is located on a side close to the blind end of the fixed seat, the end surface of the second telescopic end is provided with a first positioning groove, the side surface of the second telescopic end close to the end surface is provided with a first limiting groove, the upper surface of the second telescopic end close to the end surface is provided with a positioning protrusion, and the line connecting the positioning protrusion and the first positioning groove is parallel to the axis of the telescopic member body;

[0012] The pusher is placed on the upper surface of the telescopic member, and the pusher includes a pusher body, and a push-pull boss protruding in the radial direction is arranged on the side surface of the pusher body, and the push-pull boss protrudes from the side surface of the fixed seat body, and a trapezoidal groove is provided on the side surface of the pusher body away from the push-pull boss, and a second positioning groove is provided on the end surface of the pusher body close to the blind end, and a third positioning groove is provided on the end surface of the pusher body away from the blind end, and the third positioning groove, the second positioning groove and the first positioning groove are all located on the same axis of the pusher body;

[0013] The elastic component includes a first elastic member and a first positioning member and a second positioning member respectively connected to both ends of the first elastic member, the first elastic member is located on the upper surface of the pushing member, the first positioning member is accommodated in the second positioning groove and / or the first positioning groove and is limited, and one end of the second positioning member away from the first elastic member is accommodated in the third positioning groove or contacts with the positioning protrusion;

[0014] A second limiting groove is provided on a side of the groove wall of the installation groove corresponding to the first limiting groove on the telescopic member, and there are at least two second limiting grooves which are spaced apart along the axial direction of the installation groove;

[0015] Each second limiting groove accommodates a limiting assembly, which includes a second elastic member and a second limiting member. One end of the second elastic member is fixed to the bottom of the second limiting groove, and the other opposite end is fixed to the second limiting member. The second elastic member drives the second limiting member to selectively extend out of the second limiting groove and contact the side surface of the pushing member having a trapezoidal groove.

[0016] In an optional embodiment, one of the groove walls of each second limiting groove is a bevel, and the second limiting member is arranged along the bevel;

[0017] Preferably, the notch width of the second limiting groove is smaller than the groove bottom width;

[0018] Preferably, the number of the second limiting grooves is two, and the hypotenuse of each second limiting groove is close to a side of the adjacent second limiting groove;

[0019] Preferably, the groove wall of the first limiting groove close to the first telescopic end is also a beveled edge.

[0020] In an optional embodiment, the first telescopic end of the telescopic member body is further provided with a first stopper, and the first stopper protrudes from the end surface of the first telescopic end in the axial direction and / or radial direction;

[0021] Preferably, the first stopper is in the shape of a semi-cylindrical or prism;

[0022] Preferably, a second wire binding groove is formed on the side surface of the first limiting member, and two ends of the second wire binding groove are respectively connected to two ends of the first wire binding groove on the end surface of the open end of the fixing seat body.

[0023] In an optional embodiment, it further includes an upper cover, which is fixedly connected to the wire binding fixing seat, and an elastic component limiting groove is provided on one side of the upper cover close to the wire binding fixing seat, and the elastic component is accommodated in the elastic component limiting groove;

[0024] Preferably, a push member limiting groove is also provided on one side of the upper cover close to the wire binding fixing seat, the elastic component limiting groove is located in the push member limiting groove, the push member can be selectively moved or limited in the push member limiting groove, and a limiting opening is provided in the push member limiting groove corresponding to the push-pull boss, and the push-pull boss extends out of the limiting opening.

[0025] In an optional embodiment, the connecting piece of the wire binding fixing seat is configured such that one end connected to the delivery device of the digestive tract stent is a connecting end, and a connecting component is provided on the connecting end;

[0026] The connection assembly includes a locking member and a locking adjustment member, the locking adjustment member is provided with a first mounting portion configured to be connected to a conveying device of a digestive tract stent, the locking adjustment member is also provided with a first locking adjustment opening, and the connection end is provided with a second locking adjustment opening, and the locking member is inserted into the first locking adjustment opening and the second locking adjustment opening for limiting position;

[0027] Preferably, the surface of the connection end having the second locking adjustment port is provided with a second mounting portion, the first mounting portion and the second mounting portion are both openings, and the conveying device is clamped and fixed in the opening formed by the first mounting portion and the second mounting portion;

[0028] Preferably, the connecting end has a notch, and an adjustment groove is provided on the surface of the notch where the second locking adjustment opening is not provided, and a locking protrusion is provided on the locking adjustment member, and the locking protrusion can selectively slide in the adjustment groove;

[0029] Preferably, the adjustment groove is a dovetail groove, and the locking protrusion is a dovetail boss;

[0030] Preferably, the locking member comprises a locking handle and a locking rod connected to each other, a thread is provided at one end of the locking rod away from the locking handle, and a thread matching with the locking handle is provided in the first locking adjustment opening and / or the second locking adjustment opening;

[0031] Preferably, the shape of the connecting member is L-shaped, and the connecting end is located at one end of the connecting member in the horizontal direction.

[0032] In a second aspect, the present invention provides a conveying system for a restraining wire of a digestive tract stent, comprising a conveying device, an operating handle, a restraining wire fixing piece and a wire binding device as described in any of the aforementioned embodiments, wherein a connecting piece of a wire binding fixing seat is fixed to an end of the conveying device configured to extend out of the body, and the end of the conveying device configured to extend out of the body is also fixedly connected to the operating handle, and the restraining wire fixing piece is installed at an end of the operating handle away from the conveying device.

[0033] In an optional embodiment, the tie-down line fixing member is a tie-down line fixing knob, and the tie-down line fixing knob is threadedly connected to the operating handle;

[0034] Preferably, a restraining line fixing inner hole is provided inside the restraining line fixing knob.

[0035] In a third aspect, the present invention provides a method for tying a restraining line of a digestive tract stent, which is applicable to a conveying system as described in the aforementioned embodiment, comprising winding the restraining line extended from the conveying device around a first binding groove on the side surface of a fixing seat body for at least one circle, and then crimping the restraining line between an operating handle and a restraining line fixing member.

[0036] In an optional embodiment, the restraining wire passes through the restraining wire fixing inner hole inside the restraining wire fixing member at least once;

[0037] Preferably, the restraining wire is crimped by the operating handle and the restraining wire fixing piece at least three times.

[0038] In a fourth aspect, the present invention provides a use of a wire binding device according to any one of the aforementioned embodiments in a restraining wire for fixing a digestive tract stent.

[0039] The beneficial effects of the embodiments of the present invention are:

[0040] The present invention provides a wire binding device, method, conveying system and application of a restraining wire of a digestive tract stent. By providing a wire binding fixing seat, the wire binding fixing seat can be connected to a conveying device, and the restraining wire in the conveying device is led out to the wire binding fixing seat of the wire binding device, and accommodated in a first wire binding groove, so as to prevent the restraining wire from slipping due to force and breaking away from the fixation of the wire binding device. Since the wire binding device is provided, the force on the restraining wire will first act on the wire binding device, and will not directly affect the connection between the operating handle and the restraining wire fixing piece. Therefore, the restraining wire first passes through the wire binding device, and then the operating handle and the restraining wire fixing piece are limited in a manner that can improve the stability of the restraining wire fixation and prevent the restraining wire from slipping. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0042] Figure 1 An exploded view of the structure of a wire binding device for a digestive tract stent provided in an embodiment of the present invention;

[0043] Figure 2 A schematic diagram of the structural assembly of a wire binding device for a digestive tract stent provided in an embodiment of the present invention;

[0044] Figure 3 A schematic diagram of the structure of a wire binding fixing seat provided in an embodiment of the present invention;

[0045] Figure 4 A top view of a telescopic member provided in an embodiment of the present invention;

[0046] Figure 5 A front view of a telescopic member provided in an embodiment of the present invention;

[0047] Figure 6 A top view of a pusher provided in an embodiment of the present invention;

[0048] Figure 7 A schematic diagram of the structure of an elastic component provided by an embodiment of the present invention;

[0049] Figure 8 A top view of a wire binding fixing seat provided in an embodiment of the present invention;

[0050] Fig. 9 A schematic diagram of the structure of a limiter assembly provided in an embodiment of the present invention;

[0051] Fig.10 A schematic diagram of the structure of an upper cover provided by an embodiment of the present invention;

[0052] Fig.11 A schematic diagram of the structure of a locking member provided in an embodiment of the present invention;

[0053] Fig.12 A schematic diagram of the structure of a locking adjustment member provided in an embodiment of the present invention;

[0054] Fig.13 A schematic diagram of the installation of a wire binding fixing seat and a connecting assembly provided in an embodiment of the present invention;

[0055] Fig.14 A schematic diagram of the working principle of the wire binding device for the digestive tract stent provided by an embodiment of the present invention;

[0056] Fig.15 A schematic diagram of the working principle of the wire binding device for the digestive tract stent provided by an embodiment of the present invention;

[0057] Fig.16 A schematic diagram of the working principle of the wire binding device for the digestive tract stent provided by an embodiment of the present invention;

[0058] Fig.17 A schematic diagram of the working principle of the wire binding device for the digestive tract stent provided by an embodiment of the present invention;

[0059] Fig.18 A schematic diagram of the structure of a conveying system for a restraining line of a digestive tract stent provided in an embodiment of the present invention;

[0060] Fig.19 A front view of a conveying system for a restraining line of a digestive tract stent provided by an embodiment of the present invention;

[0061] Fig. 20 A cross-sectional view of a restraining wire fixing member provided by an embodiment of the present invention;

[0062] Fig.21 A schematic diagram of a method for tying a restraining line provided in an embodiment of the present invention.

[0063] Icons: 100-wire binding device; 110-wire binding fixing seat; 111-fixing seat body; 1111-open end; 1112-blind end; 112-connecting piece; 1121-second locking adjustment port; 1122-second mounting portion; 1123-adjusting groove; 113-mounting groove; 114-first wire binding groove; 115-second limiting groove; 120-telescopic piece; 121-first positioning groove; 122-first limiting groove; 123-positioning protrusion; 124-first limiting piece; 125-second wire binding groove; 130-pushing piece; 131-push-pull boss; 132-trapezoidal groove; 1321-first limiting groove wall; 1322-second limiting groove wall; 133-second positioning groove; 134-third positioning groove; 140-elastic component ;141-first elastic member;142-first positioning member;143-second positioning member;150-limiting assembly;151-second elastic member;152-second limiting member;160-upper cover;161-limiting groove of elastic member;162-limiting groove of pushing member;1621-first convex corner;1622-second convex corner;163-limiting opening;170-locking member;171-locking handle;172-locking rod;180-locking adjustment member;181-first mounting portion;182-first locking adjustment opening;183-locking protrusion;190-mounting hole of conveying device;10-conveyor system;200-conveyor device;300-operating handle;400-control line fixing member;410-control line fixing inner hole;500-control line. DETAILED DESCRIPTION

[0064] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0065] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0066] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0067] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0068] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0069] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0070] like Figure 1 and Figure 2 As shown, some embodiments of the present invention provide a wire binding device 100 for a digestive tract stent, comprising a wire binding fixing seat 110 , a telescopic member 120 , a pushing member 130 and an elastic component 140 .

[0071] like Figure 3 As shown, the wire binding fixing seat 110 includes a fixing seat body 111 and a connecting member 112 . A first wire binding groove 114 is formed on a side surface of the fixing seat body 111 for accommodating and fixing the restraining wire 500 .

[0072] One end of the connector 112 is fixed to the lower surface of the fixing seat body 111, and the fixing seat body 111 and the connector 112 are integrally formed; the other end of the connector 112 is configured to be connected to the conveying device 200 of the digestive tract stent, that is, the connecting end; the axis of the fixing seat body 111 is perpendicular to the axis of the conveying device 200, so that after the restraining line 500 extending from the conveying device 200 is connected to the first wire binding groove 114 on the fixing seat body 111, the force applied to the restraining line 500 by the inside of the conveying device 200 will be received by the wire binding device 100, thereby changing the force direction of the restraining line 500 at one end outside the body of the restraining line 500 near the wire head, thereby preventing the restraining line 500 from pulling the restraining line fixing member 400, causing the restraining line 500 to loosen.

[0073] In such Figure 3 In the illustrated embodiment, in order to facilitate the installation of the wire binding device 100 and the conveying device 200 and to facilitate the fixation of the restraining wire 500, the connecting member 112 is L-shaped, and the connecting end is located at one end of the connecting member 112 in the horizontal direction.

[0074] In order to facilitate the control of the position of the restraining wire 500, the wire binding device 100 provided by the present invention further includes the following structure:

[0075] The upper surface of the fixing seat body 111 is provided with a mounting groove 113 along the axial direction of the fixing seat body 111. The two ends of the fixing seat body 111 along the axial direction are respectively an open end 1111 and a blind end 1112. The mounting groove 113 is connected with the end surface of the open end 1111. The telescopic member 120 is accommodated in the mounting groove 113. The open end 1111 provided in the mounting groove 113 can facilitate the telescopic member 120 to move in the mounting groove 113 and partially extend out of the open end 1111, thereby realizing the control of the length of the restraining line 500.

[0076] Please refer to Figure 4 and Figure 5 The telescopic member 120 includes a telescopic member 120 body, which can selectively slide in the mounting groove 113. The axis of the telescopic member 120 body is parallel to the axis of the fixing seat body 111. The two axial ends of the telescopic member 120 body are respectively a first telescopic end and a second telescopic end. The second telescopic end is located on a side close to the blind end 1112 of the fixing seat. A first positioning groove 121 is provided on the end surface of the second telescopic end. A positioning protrusion 123 is provided on the upper surface of the second telescopic end close to the end surface. The line connecting the positioning protrusion 123 and the first positioning groove 121 is parallel to the axis of the telescopic member 120 body. Both the positioning protrusion 123 and the first positioning groove 121 can be used to position the elastic component 140.

[0077] Please refer to Figure 2 and Figure 6The pushing member 130 is placed on the upper surface of the telescopic member 120. The pushing member 130 includes a pushing member 130 body. The side surface of the pushing member 130 body is provided with a push-pull boss 131 protruding in the radial direction, and the push-pull boss 131 protrudes from the side surface of the fixed seat body 111. Therefore, the movement of the pushing member 130 on the surface of the telescopic member 120 can be achieved by applying external force to the push-pull boss 131.

[0078] A second positioning groove 133 is formed on the end surface of the push member 130 body close to the blind end 1112, and a third positioning groove 134 is formed on the end surface of the push member body away from the blind end 1112. The third positioning groove 134, the second positioning groove 133 and the first positioning groove 121 are all located on the same axis of the push member body, and the second positioning groove 133 and the first positioning groove 121 can selectively form a through groove.

[0079] Please refer to Figure 7 The elastic component 140 includes a first elastic member 141 and a first positioning member 142 and a second positioning member 143 respectively connected to the two ends of the first elastic member 141. The first elastic member 141 is located on the upper surface of the pushing member 130, the first positioning member 142 is accommodated in the second positioning groove 133 and / or the first positioning groove 121 and is limited, and the end of the second positioning member 143 away from the first elastic member 141 is accommodated in the third positioning groove 134 or contacts with the positioning protrusion 123.

[0080] In the initial state when the telescopic member 120 is not extended, the telescopic member 120 and the pushing member 130 are stacked, the first positioning groove 121 and the second positioning groove 133 are in contact and form a through groove, and the first positioning member 142 of the elastic component 140 is accommodated in the through groove formed by the first positioning groove 121 and the second positioning groove 133, and the first elastic member 141 naturally extends toward the open end 1111 of the wire binding fixing seat 110, so that the end of the second positioning member 143 away from the first elastic member 141 is accommodated in the third positioning groove 134.

[0081] When an external force is applied to the pushing member 130 to push the pushing member 130 toward the open end 1111 of the wire binding fixing seat 110, the movement of the pushing member 130 toward the open end 1111 will drive the first elastic member 141 to stretch. Therefore, the first elastic member 141 can drive the telescopic member 120 below the pushing member 130 to move, pushing the telescopic member 120 toward the open end 1111 of the wire binding fixing seat 110, thereby pushing the telescopic member 120 out.

[0082] Please refer to Figure 6 In order to control the telescopic process of the telescopic member 120, a trapezoidal groove 132 is opened on the side surface of the pushing member 130 body away from the push-pull boss 131, and the two groove walls of the trapezoidal groove 132 are respectively a first limiting groove wall 1321 and a second limiting groove wall 1322.

[0083] A first limiting groove 122 is formed on the side surface of the second telescopic end of the telescopic member 120 body near the end surface; when the pushing member 130 and the telescopic member 120 are stacked and installed, the first limiting groove 122 and the trapezoidal groove 132 are located on the same side.

[0084] Please refer to Figure 6 A second limiting groove 115 is provided on the groove wall of the installation groove 113 at one side corresponding to the first limiting groove 122 on the telescopic member 120 . There are at least two second limiting grooves 115 , which are spaced apart along the axial direction of the installation groove 113 .

[0085] Please refer to Figure 8 and Fig. 9 Each second limiting groove 115 accommodates a limiting assembly 150, and the limiting assembly 150 includes a second elastic member 151 and a second limiting member 152. One end of the second elastic member 151 is fixed to the bottom of the second limiting groove 115, and the other opposite end is fixed to the second limiting member 152. The second elastic member 151 drives the second limiting member 152 to selectively extend out of the second limiting groove 115 and contact the side surface of the pushing member 130 having the trapezoidal groove 132.

[0086] When the telescopic member 120 is in the initial state where it is not extended, the limiting assembly 150 extends out of the second limiting groove 115. Therefore, the second limiting member 152 of the limiting assembly 150 can be in limiting contact with the first limiting groove 122, and the telescopic member 120 cannot be extended. When the push-pull boss 131 is pushed, the groove wall of the trapezoidal groove 132 contacts the second limiting member 152 during the movement of the push-pull boss 131. Since the groove wall of the trapezoidal groove 132 is a beveled edge, the second limiting member 152 can be gradually pressed into the second limiting groove 115 during the movement of the pushing member 130, and the telescopic member 120 is separated from the second limiting member 152. Limiting effect; during the movement of the pushing member 130, and when the telescopic member 120 has not yet broken away from the limiting effect of the second limiting member 152, since the telescopic member 120 is stationary, one end of the first positioning member 142 of the elastic component 140 is stationary, but one end of the second positioning member 143 will be pushed by the pushing member 130, so that the first elastic member 141 is stretched. When the telescopic member 120 breaks away from the limiting effect of the second limiting member 152, the stretched first elastic member 141 drives the telescopic member 120 to extend toward one side of the open end 1111 until the second positioning member 143 contacts the positioning protrusion 123, and the telescopic member 120 stops extending.

[0087] Please refer to Fig.10 Furthermore, in order to ensure the movement stability of the pushing member 130, the telescopic member 120 and the elastic component 140, and protect the internal structure at the same time, the wire binding device 100 also includes an upper cover 160, and the upper cover 160 is fixedly connected to the fixing seat body 111, and the connection method can be, for example, bonding or screw fixing.

[0088] In addition, the upper cover 160 can also serve as a limiting and guiding structure for the elastic component 140, so that the stretching and rebounding process of the elastic component 140 is more stable. Specifically, an elastic component limiting groove 161 is provided on one side of the upper cover 160 close to the wire binding fixing seat 110, and the elastic component 140 is accommodated in the elastic component limiting groove 161.

[0089] Furthermore, the upper cover 160 can also provide assistance for limiting the push member 130. A push member limiting groove 162 is also provided on the side of the upper cover 160 close to the wire binding fixing seat 110. The elastic component limiting groove 161 is located in the push member limiting groove 162 and can only move along the axial direction of the push member body. The push member 130 can be selectively moved or limited in the push member limiting groove 162, and a limiting opening 163 is provided at the push member limiting groove 162 corresponding to the push-pull boss 131, and the push-pull boss 131 extends out of the limiting opening 163.

[0090] like Fig.10 As shown, the shape of the pushing member limiting groove 162 is similar to that of the pushing member 130, and the limiting opening 163 on the pushing member limiting groove 162 is used to accommodate the push-pull boss 131. The two convex corners of the pushing member limiting groove 162 away from the limiting opening 163 are respectively the first convex corner 1621 and the second convex corner 1622, the first convex corner 1621 is used to accommodate the first limiting groove wall 1321, and to limit the first limiting groove wall 1321, and the second convex corner 1622 is used to accommodate the second limiting groove wall 1322, and to limit the second limiting groove wall 1322.

[0091] In this embodiment, the height of the boss between the first convex corner 1621 and the second convex corner 1622 is greater than the height of the protrusion on the side of the first convex corner 1621 or the second convex corner 1622 away from the boss.

[0092] In this embodiment, when the first elastic member 141 is in a natural state, the length of the elastic component 140 is approximately equal to the length of the push member 130, and the end surface of the push member 130 body away from the blind end 1112 is provided with a third positioning groove 134, and the third positioning groove 134 is arranged corresponding to the second positioning groove 133, so that the elastic component 140 is just overlapped on the surface of the push member 130, and the second positioning member 143 of the elastic component 140 is contacted and limited with the third positioning groove 134 of the push member 130. When the first elastic member 141 is stretched and rebounds, and drives the telescopic member 120 to partially extend out of the wire binding fixing seat 110, since the telescopic member 120 is quickly extended, the second positioning member 143 can contact and limit with the positioning protrusion 123 on the telescopic member 120, and the positioning function of the third positioning groove 134 is disengaged.

[0093] like Figure 4Furthermore, the first telescopic end of the telescopic member 120 body is also provided with a first limiting member 124, and the first limiting member 124 protrudes from the end surface of the first telescopic end in the axial direction and / or radial direction.

[0094] like Figure 4 As shown, in this embodiment, the first limiting member 124 is semi-cylindrical in shape to achieve axial limiting of the main body of the telescopic member 120 and prevent the telescopic member 120 from continuously moving toward the blind end 1112 .

[0095] In this embodiment, in order to ensure that the restraining wire 500 is stably installed on the wire binding device 100, a second wire binding groove 125 is opened on the side surface of the first limiting member 124, and the two ends of the second wire binding groove 125 are respectively connected to the two ends of the first wire binding groove 114 on the end surface of the open end 1111 of the fixing seat body 111, so that the first wire binding groove 114 and the second wire binding groove 125 form a through groove.

[0096] like Figure 8 In this embodiment, in order to improve the stability of the second limiting member 152 and facilitate the pusher 130 to adjust the position of the second limiting member 152, one of the groove walls of each second limiting groove 115 is a bevel, and the second limiting member 152 is arranged along the bevel. When the second limiting member 152 is inserted into the first limiting groove 122, the bevel of the second limiting member 152 can form a triangular limiting structure in the first limiting groove 122, thereby improving the limiting stability. In addition, the groove wall of the trapezoidal groove 132 of the pusher 130 is inclined, and the second limiting member 152 is also inclined, so that the trapezoidal groove 132 can push the second limiting member 152 into the first limiting groove 122. The notch width of the second limiting groove 115 is smaller than the groove bottom width.

[0097] In this embodiment, the number of the second limiting grooves 115 is two, and the hypotenuse of each second limiting groove 115 is close to a side of the adjacent second limiting groove 115 .

[0098] Preferably, in order to match the structure of the first limiting groove and the structure of the second limiting member 152 , the groove wall of the first limiting groove 122 close to the first telescopic end is also a bevel.

[0099] When the second limiting member 152 is squeezed, the second limiting member 152 rotates around the end surface close to one end of the groove bottom as an axis, so that it can be accommodated in the first limiting groove 122 .

[0100] Please refer to Fig.11 and Fig.12 In this embodiment, in order to facilitate the connection between the wire binding device 100 and the conveying device 200, a connecting component is provided on the connecting end.

[0101] The connection assembly includes a locking member 170 and a locking adjustment member 180. The locking adjustment member 180 is provided with a first mounting portion 181 configured to be connected to the delivery device 200 of the digestive tract stent. The locking adjustment member 180 is also provided with a first locking adjustment opening 182. The connection end is provided with a second locking adjustment opening 1121. The locking member 170 is inserted into the first locking adjustment opening 182 and the second locking adjustment opening 1121 for position limiting. By controlling the position of the locking member 170 in the first locking adjustment opening 182 and the second locking adjustment opening 1121, the position between the locking adjustment member 180 and the connection end is controlled, so that the delivery devices 200 of multiple sizes can be accommodated.

[0102] like Fig.13 Preferably, the surface of the connecting end having the second locking adjustment port 1121 is provided with a second mounting portion 1122, the first mounting portion 181 and the second mounting portion 1122 are both openings, the openings of the first mounting portion 181 and the second mounting portion 1122 are combined into a conveying device mounting hole 190, and the conveying device 200 is clamped and fixed in the conveying device mounting hole 190.

[0103] In this embodiment, in order to reduce the volume of the wire binding device 100, the connecting end has a notch, and an adjustment groove 1123 is provided on the surface of the notch where the second locking adjustment port 1121 is not provided. A locking protrusion 183 is provided on the locking adjustment member 180, and the locking protrusion 183 can selectively slide in the adjustment groove 1123.

[0104] Furthermore, the adjustment groove 1123 is a dovetail groove, and the locking protrusion 183 is a dovetail-shaped boss.

[0105] Preferably, the locking member 170 includes a locking handle 171 and a locking rod 172 connected to each other, the locking rod 172 is provided with a thread at one end away from the locking handle 171, and the first locking adjustment port 182 and / or the second locking adjustment port 1121 are provided with threads matching the locking handle 171.

[0106] The wire binding device 100 and the conveying device 200 can be fixed by passing the locking rod 172 through the first locking adjustment opening 182 and the second locking adjustment opening 1121 and making the thread on the locking rod 172 cooperate with the thread of the first locking adjustment opening 182 or the second locking adjustment opening 1121.

[0107] Among them, the locking rod 172 cooperates with the first locking adjustment port 182 when the locking rod 172 penetrates from one side of the connecting member 112 toward the locking adjustment member 180; the locking rod 172 and the second locking adjustment port 1121 threaded cooperation is when the locking rod 172 penetrates from one side of the locking adjustment member 180 toward the connecting member 112.

[0108] The embodiment of the present invention provides a wire binding device 100 for a digestive tract stent, and its working principle is as follows:

[0109] like Figure 1 or Figure 2 As shown, first, the telescopic member 120 is installed in the installation groove 113, the second telescopic end of the telescopic member 120 is close to the blind end 1112 of the fixing seat body 111, and the first limiting groove 122 of the telescopic member 120 is located on the same side as the second limiting groove 115 of the installation groove 113. Then, the push member 130 is placed on the surface of the telescopic member 120, the second positioning groove 133 of the push member 130 is in contact with and connected to the first positioning groove 121 of the telescopic member 120, the elastic component 140 is placed on the surface of the push member 130, the first elastic member 141 is located on the surface of the push member 130, the first positioning member 142 is accommodated in the first positioning groove 121 and the second positioning groove 133, the second positioning member 143 is accommodated in the third positioning groove 134, and the end surface of the second positioning member 143 away from the first elastic member 141 is in contact with the upper surface of the telescopic member 120.

[0110] The push-pull boss 131 of the push member 130 is located on the opposite side of the second limiting groove. Then the upper cover 160 is fixedly connected to the fixing seat body 111, and the limiting opening 163 faces one side of the push-pull boss 131, so that the push-pull boss 131 extends out of the limiting opening 163. The push member 130 on the surface of the telescopic member 120 is accommodated in the push member limiting groove 162 of the upper cover 160, and the elastic component 140 is accommodated in the elastic component limiting groove 161 of the upper cover 160.

[0111] A second elastic member 151 is fixed to the bottom of the second limiting groove 115 . The other end of the second elastic member 151 is connected to a second limiting member 152 . The second limiting member 152 is disposed along the oblique side of the second limiting groove 115 .

[0112] The locking protrusion 183 of the locking adjustment member 180 is placed in the adjustment groove 1123 of the connection end, and the locking protrusion 183 is slidably matched in the adjustment groove 1123. The locking rod 172 passes through the second locking adjustment port 1121 and the first locking adjustment port 182 from one side of the connection end, and is threadedly connected with the first locking adjustment port 182, so that the second mounting portion 1122 on the locking adjustment member 180 and the first mounting portion 181 on the connection end form the conveying device mounting hole 190, and the conveying device 200 is fixedly connected and fixed to the conveying device mounting hole 190.

[0113] like Fig.14As shown, the wire binding device 100 is in an initial state, that is, the state where the telescopic member 120 is not extended (state A). At this time, the end faces of the telescopic member 120 and the push member 130 close to the blind end 1112 overlap, the first positioning groove 121 and the second positioning groove 133 contact and form a through groove, the first positioning member 142 of the elastic component 140 is accommodated in the first positioning groove 121 and the second positioning groove 133; the second positioning member 143 is accommodated in the third positioning groove 134, and the second limiting member 152 close to the side of the blind end 1112 extends into the first limiting groove 122, limiting the telescopic member 120 to prevent the telescopic member 120 from moving in the installation groove 113.

[0114] like Fig.15 As shown, when the wire binding device 100 is in the initial state, a thrust is applied to the pushing member 130 in the direction of the open end 1111 (state B). At this time, due to the limiting effect of the second limiting member 152 close to the blind end 1112 and the first limiting groove 122, the telescopic member 120 cannot move, but the pushing member 130 is forced to move toward the side close to the open end 1111. Therefore, the first positioning member 142 is disengaged from the second positioning groove 133 and is only accommodated in the first positioning groove 121, and one end of the first positioning member 142 remains stationary; the second positioning member 143 moves toward the open end 1111 as the pushing member 130 moves, so the first elastic member 141 is stretched.

[0115] As the pushing member 130 moves toward the open end 1111, the first limiting groove wall 1321 of the trapezoidal groove 132 gradually contacts the second limiting member 152 on the side of the blind end 1112 and is pressed down, so that the second elastic member 151 on the side of the blind end 1112 is compressed, and the second limiting member 152 connected thereto enters the second limiting groove 115. At this time, the second limiting member 152 on the side of the blind end 1112 is disengaged from the limiting of the first limiting groove 122, and the telescopic member 120 has the ability to extend out of the mounting groove 113.

[0116] like Fig.16 As shown, in the B state, since the second limiting member 152 on the side of the blind end 1112 is separated from the limiting position of the first limiting groove 122, and the first elastic member 141 is in an elongated state, the telescopic member 120 will quickly extend to the side close to the open end 1111 until the second positioning member 143 contacts the positioning protrusion 123, and the second positioning member 143 is limited by the elastic component limiting groove 161 of the upper cover 160, and the extension process of the telescopic member 120 stops; at this time, the end surface of the second telescopic end of the telescopic member 120 is just abutted against the second limiting member 152 on the side of the open end 1111 to prevent the telescopic member 120 from retracting, and the wire binding device 100 is in the extended C state. In the C state, the first positioning member 142 is accommodated in the second positioning groove 133.

[0117] like Fig.17As shown, in the C state, if the telescopic member 120 is to be retracted, the wire binding device 100 can be in the D state. In the process of resetting the telescopic member 120, it is necessary to push the push-pull boss 131 again, and push it in the direction close to the blind end 1112. The pushing member 130 moves in the direction of the blind end 1112, and the second limiting member 152 on the side of the open end 1111 contacts the second limiting groove wall 1322 of the trapezoidal groove 132 and is gradually pressed down by the second limiting groove wall 1322. The second elastic member 151 on the side of the open end 1111 is compressed, and its corresponding second limiting member 152 is accommodated in the corresponding second limiting groove 1112. 5, at this time, the second limiting member 152 on the side of the open end 1111 loses the limiting ability on the end surface of the second telescopic end of the telescopic member 120, because the process of the pushing member 130 moving toward the blind end 1112 will stretch the first elastic member 141, so after the limiting disappears, the telescopic member 120 quickly retracts toward the blind end 1112, and then the second limiting member 152 on the side of the blind end 1112 extends into the first limiting groove 122 for limiting, and the wire binding device 100 returns to the initial state, that is, state A.

[0118] During the D state, the first positioning member 142 is accommodated in the second positioning groove 133 and is accommodated in both the first positioning groove 121 and the second positioning groove 133 , and the second positioning member 143 is limited by contact with the positioning protrusion 123 and is returned to be accommodated in the third positioning groove 134 .

[0119] By repeating the four states A, B, C and D, the wire binding device 100 can be extended and retracted. Since the restraining wire 500 is fixed on the wire binding device 100, the restraining wire 500 can be tightened or relaxed through the above-mentioned result control, thereby controlling the position of the bracket part in the body.

[0120] like Fig.18 and Fig.19 In addition, the present invention also provides a conveying system 10 for the restraining wire of a digestive tract stent based on the above-mentioned wire binding device 100, including a conveying device 200, an operating handle 300, a restraining wire fixing piece 400 and the above-mentioned wire binding device 100, the connecting piece 112 of the wire binding fixing seat 110 is fixed to the end of the conveying device 200 configured to extend out of the body, and the end of the conveying device 200 configured to extend out of the body is also fixedly connected to the operating handle 300, and the restraining wire fixing piece 400 is installed at the end of the operating handle 300 away from the conveying device 200.

[0121] like Fig. 20 In this embodiment, the restraining line fixing member 400 is a restraining line 500 fixing knob, and the restraining line 500 fixing knob is threadedly connected to the operating handle 300.

[0122] In order to ensure that the restraining wire 500 can be stably fixed, a restraining wire fixing inner hole 410 is provided inside the fixing knob of the restraining wire 500. The restraining wire 500 can pass through the restraining wire fixing inner hole 410, thereby improving the fixing ability of the restraining wire 500.

[0123] Some existing methods of fixing the restraint line 500 are to pass the restraint line 500 through the restraint line fixing inner hole 410 and then tie a knot to fix the restraint line 500. However, with this fixing method, when the restraint line 500 needs to be released, it can only be achieved by cutting the knot. When cutting the knot, it is necessary to ensure that the end of the thread is located on the restraint line 500 fixing knob, otherwise the knot may enter the delivery device 200 in a movable manner, which may cause the knot to be blocked in the catheter, making the restraint line delivery system 10 invalid.

[0124] The present invention provides a wire binding device 100 which can stably fix the restraining wire 500. Therefore, the restraining wire 500 does not need to be knotted on the restraining wire fixing inner hole 410, and the restraining wire 500 will not fall off, nor will the restraining wire 500 fixing knob and the operating handle 300 rotate relative to each other and separate.

[0125] like Fig.21 The working principle of the conveying system 10 for the digestive tract stent restraining line provided by the present invention is as follows:

[0126] The end of the conveying device 200 away from the body is passed through the conveying device installation hole 190 of the wire binding device 100, and the locking piece 170 is tightened to fix the conveying device 200 and the wire binding device 100. The restraining wire 500 is led out of the conveying device 200, and the restraining wire 500 extends from the end of the conveying device 200, and then it is wound around the first wire binding groove 114 and the second wire binding groove 125 on the wire binding device 100, and then returned to the position where the restraining wire 500 extends from the conveying device 200, and the restraining wire 500 passes through the restraining wire fixing inner hole 410, and then the restraining wire fixing piece 400 is screwed onto the operating handle 300, and the three strands of the restraining wire 500 (the restraining wire 500 extending from the conveying device 200, the restraining wire 500 wound back by the wire binding device 100, and the end of the restraining wire 500) are all screwed and fixed by the restraining wire fixing piece 400 and the operating handle 300.

[0127] Based on the above-mentioned conveying system 10, the present invention provides a method for binding the restraining line 500 of the digestive tract stent, comprising winding the restraining line 500 extended from the conveying device 200 around the first binding groove 114 on the side surface of the fixing seat body 111 for at least one circle, and then crimping it between the operating handle 300 and the restraining line fixing piece 400.

[0128] Generally, the restraining wire 500 can be reliably fixed by winding it around the wire binding device 100 once. However, according to actual needs, the number of turns of the restraining wire 500 can also be set according to actual needs.

[0129] In an optional embodiment, the restraining wire 500 passes through the restraining wire fixing inner hole 410 inside the restraining wire fixing member 400 at least once to improve the fixing ability of the restraining wire 500. In this embodiment, the restraining wire 500 passes through the restraining wire fixing inner hole 410 only once when winding back from the wire binding device 100.

[0130] In this embodiment, the restraining wire 500 is crimped three times by the operating handle 300 and the restraining wire fixing piece 400. When the number of turns of the restraining wire 500 wrapped around the wire binding device 100 increases, the number of times the restraining wire 500 is crimped by the operating handle 300 and the restraining wire fixing piece 400 will also increase accordingly.

[0131] Using the above Figure 1 to Figure 17 The wire binding device 100 of the digestive tract stent shown in the figure is used to fix the restraining wire 500 in combination with the above-mentioned conveying system 10 and wire binding method, and then the pull-out force of the restraining wire 500 is tested. The experiment is repeated for 20 groups, and the results shown in Table 1 are obtained.

[0132] Table 1 Pull-off force of the tie wire 500 provided in the embodiment (N)

[0133] Number of groups Pull-off force Number of groups Pull-off force Number of groups Pull-off force Number of groups Pull-off force 1 48.559 6 49.006 11 53.831 16 42.62 2 41.287 7 51.662 12 44.813 17 45.79 3 48.139 8 50.886 13 48.681 18 47.359 4 43.04 9 46.339 14 37.183 19 49.144 5 46.9 10 40.086 15 41.546 20 42.601

[0134] As can be seen from Table 1, the wire binding device 100 and the wire binding method provided by the embodiment of the present invention make the average pull-out force of the restraining wire 500 be 45.974 N, the maximum pull-out force can reach 53.831 N, and the minimum pull-out force is 37.183 N. The wire binding device 100 and the wire binding method provided by the embodiment of the present invention can stably fix the restraining wire 500.

[0135] In order to compare the advantages of the wire binding device 100 and the wire binding method provided by the embodiment of the present invention, the applicant also verified the pull-out force of the restraining wire 500 when the existing restraining wire 500 fixing method was used, and obtained the results shown in Table 2.

[0136] Among them, the existing method of fixing the restraining line 500 is to not use the wire binding device 100, directly lead the restraining line 500 out of the conveying device 200, and then use the threaded connection between the operating handle 300 and the restraining line fixing member 400 to fix the restraining line 500.

[0137] Table 2 Pull-off force of the restraining wire 500 of the existing wire binding method (N)

[0138] Number of groups Pull-off force Number of groups Pull-off force Number of groups Pull-off force Number of groups Pull-off force 1 32.908 6 34.829 11 17.786 16 33.606 2 38.811 7 22.616 12 23.706 17 30.801 3 27.157 8 32.409 13 22.571 18 33.162 4 21.32 9 18.751 14 19.194 19 32.86 5 32.899 10 29.24 15 23.995 20 23.251

[0139] As can be seen from Table 2, the existing wire binding method makes the average pull-out force of the restraining wire 500 27.594N, the maximum pull-out force can reach 38.811N, and the minimum pull-out force is 17.786N. The pull-out force obtained by the wire binding device 100 and the wire binding method provided in the embodiment of the present invention is significantly greater than that of the existing method, indicating that the embodiment of the present invention has better stability for the restraining wire 500.

[0140] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A wire binding device for a digestive tract stent, characterized in that: It includes a wire binding fixing seat, a telescopic member, a pushing member and an elastic component; The wire binding fixing seat comprises a fixing seat body and a connecting piece, one end of the connecting piece is fixed to the lower surface of the fixing seat body, and the other end opposite thereto is configured to be connected to a conveying device of the digestive tract stent, and the axis of the fixing seat body intersects with the axis of the conveying device; A first wire binding groove is formed on the side surface of the fixing seat body; The upper surface of the fixing seat body is provided with a mounting groove along the axial direction of the fixing seat body, and the two ends of the fixing seat body along the axial direction are an open end and a blind end respectively, and the mounting groove is connected with the end surface of the open end; The telescopic member comprises a telescopic member body, the telescopic member body can selectively slide in the installation groove, the axis of the telescopic member body is parallel to the axis of the fixing seat body, the two axial ends of the telescopic member body are respectively a first telescopic end and a second telescopic end, the second telescopic end is located on a side close to the blind end of the fixing seat, the end surface of the second telescopic end is provided with a first positioning groove, the side surface of the second telescopic end close to the end surface is provided with a first limiting groove, the upper surface of the second telescopic end close to the end surface is provided with a positioning protrusion, and the connecting line of the positioning protrusion and the first positioning groove is parallel to the axis of the telescopic member body; The pusher is placed on the upper surface of the telescopic member, the pusher includes a pusher body, the side surface of the pusher body is provided with a push-pull boss protruding in the radial direction, and the push-pull boss protrudes from the side surface of the fixing seat body, a trapezoidal groove is provided on the side surface of the pusher body away from the push-pull boss, a second positioning groove is provided on the end surface of the pusher body close to the blind end, and a third positioning groove is provided on the end surface of the pusher body away from the blind end, and the third positioning groove, the second positioning groove and the first positioning groove are all located on the same axis of the pusher body; The elastic component includes a first elastic member and a first positioning member and a second positioning member respectively connected to two ends of the first elastic member, the first elastic member is located on the upper surface of the pushing member, the first positioning member is accommodated in the second positioning groove and / or the first positioning groove and is limited, and one end of the second positioning member away from the first elastic member is accommodated in the third positioning groove or contacts with the positioning protrusion; A second limiting groove is provided on a side of the groove wall of the installation groove corresponding to the first limiting groove on the telescopic member, and the number of the second limiting grooves is at least two and they are spaced apart along the axial direction of the installation groove; Each of the second limiting grooves contains a limiting assembly, which includes a second elastic member and a second limiting member. One end of the second elastic member is fixed to the bottom of the second limiting groove, and the other opposite end is fixed to the second limiting member. The second elastic member drives the second limiting member to selectively extend out of the second limiting groove and contact the side surface of the pushing member having a trapezoidal groove.

2. The wire binding device according to claim 1, characterized in that: One of the groove walls of each of the second limiting grooves is a bevel, and the second limiting member is arranged along the bevel; Preferably, the notch width of the second limiting groove is smaller than the groove bottom width; Preferably, the number of the second limiting grooves is two, and the hypotenuse of each of the second limiting grooves is close to a side of the adjacent second limiting groove; Preferably, a groove wall of the first limiting groove close to the first telescopic end is also a beveled edge.

3. The wire binding device according to claim 1, characterized in that: The first telescopic end of the telescopic member body is further provided with a first limiting member, and the first limiting member protrudes from the end surface of the first telescopic end in the axial direction and / or radial direction; Preferably, the first stopper is in the shape of a semi-cylindrical or prism; Preferably, a second wire binding groove is formed on the side surface of the first limiting member, and two ends of the second wire binding groove are respectively connected to two ends of the first wire binding groove on the end surface of the open end of the fixing seat body.

4. The wire binding device according to claim 1, characterized in that: It also includes an upper cover, which is fixedly connected to the wire binding fixing seat, and an elastic component limiting groove is provided on one side of the upper cover close to the wire binding fixing seat, and the elastic component is accommodated in the elastic component limiting groove; Preferably, a push member limiting groove is also provided on one side of the upper cover close to the wire binding fixing seat, the elastic component limiting groove is located in the push member limiting groove, the push member can be selectively moved or limited in the push member limiting groove, and the push member limiting groove is provided with a limiting opening corresponding to the push-pull boss, and the push-pull boss extends out of the limiting opening.

5. The wire binding device according to claim 1, characterized in that: The connecting piece of the wire binding fixing seat is configured such that one end connected to the delivery device of the digestive tract stent is a connecting end, and a connecting component is provided on the connecting end; The connection assembly includes a locking member and a locking adjustment member, the locking adjustment member is provided with a first mounting portion configured to be connected to a conveying device of the digestive tract stent, the locking adjustment member is also provided with a first locking adjustment port, the connecting end is provided with a second locking adjustment port, and the locking member penetrates the first locking adjustment port and the second locking adjustment port to limit the position; Preferably, the surface of the connecting end having the second locking adjustment port is provided with a second mounting portion, the first mounting portion and the second mounting portion are both openings, and the conveying device is clamped and fixed in the opening formed by the first mounting portion and the second mounting portion; Preferably, the connecting end has a notch, and a surface of the notch where the second locking adjustment opening is not provided is provided with an adjustment groove, and a locking protrusion is provided on the locking adjustment member, and the locking protrusion can selectively slide in the adjustment groove; Preferably, the adjustment groove is a dovetail groove, and the locking protrusion is a dovetail boss; Preferably, the locking member comprises a locking handle and a locking rod connected to each other, the locking rod is provided with a thread at one end away from the locking handle, and the first locking adjustment opening and / or the second locking adjustment opening are provided with a thread matching with the locking handle; Preferably, the connecting member is L-shaped, and the connecting end is located at one end of the connecting member in the horizontal direction.

6. A delivery system for a digestive tract stent restraining line, characterized in that: It includes a conveying device, an operating handle, a restraining wire fixing piece and a wire binding device as described in any one of claims 1 to 5, wherein the connecting piece of the wire binding fixing seat is fixed to an end of the conveying device configured to extend outside the body, and the end of the conveying device configured to extend outside the body is also fixedly connected to the operating handle, and the restraining wire fixing piece is installed at an end of the operating handle away from the conveying device.

7. The conveying system according to claim 6, characterized in that The restraining wire fixing member is a restraining wire fixing knob, and the restraining wire fixing knob is threadedly connected to the operating handle; Preferably, a restraining wire fixing inner hole is provided inside the restraining wire fixing knob.

8. A method for tying a restraining line of a digestive tract stent, characterized in that: Suitable for the conveying system as described in claim 6 or 7, including winding the restraining wire extended from the conveying device around the first wire binding groove on the side surface of the fixing seat body for at least one circle, and then crimping it between the operating handle and the restraining wire fixing piece.

9. The wire binding method according to claim 8, characterized in that: The containment wire passes through the containment wire fixing inner hole inside the containment wire fixing member at least once; Preferably, the restraining wire is crimped by the operating handle and the restraining wire fixing piece at least three times.

10. Use of the wire binding device according to any one of claims 1 to 5 in fixing a restraining wire for a digestive tract stent.

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