Conveying device and conveying system

Abstract

The utility model relates to a conveying device and a conveying system. The conveying device comprises a shell, a mounting cavity is formed in the shell, and a fixing part is arranged at the end, along a first shaft, of the mounting cavity; at least part of the pushing part is arranged in the mounting cavity, and the pushing part is configured to be capable of moving in the direction, facing the fixing part, of the first shaft; the elastic supporting piece is arranged in the mounting cavity and arranged on one side of the pushing piece along a second shaft, the second shaft intersects with the first shaft, and part of the elastic supporting piece abuts against the pushing piece. According to the conveying device, the pushing piece can be prevented from retreating during injection, so that smooth and stable glue injection is guaranteed, the enough glue output amount is completed, and then closing of the vein is achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of medical apparatus and instruments, and particularly relates to a conveying device and conveying system. BACKGROUND

[0002] Varicosis of lower extremity mainly refers to syndrome caused by poor venous blood return and high venous pressure due to abnormal structure or function of veins, and varicosis of great saphenous vein is most common. Its clinical manifestations are heavy and painful lower limbs, edema, tortuous veins, skin state change and venous ulcer, and it can be complicated with rupture and hemorrhage or thrombotic superficial phlebitis, and even cause fatal pulmonary embolism. Therefore, varicosis of lower extremity not only affects the quality of life of patients, but also even threatens life when being serious.

[0003] In recent years, with the progress of technology and the popularization of clinical application, the treatment of varicosis has gradually shifted from traditional traumatic open surgery to endovascular closure surgery. Compared with energy ablation technology, the normal temperature closure technology represented by vein glue can ensure the closure rate while avoiding heat damage, and does not need to inject swelling anesthetic. In addition, it also has the advantages of short learning curve, short operation time, small patient damage and fast recovery to normal life. Endovascular closure of vein glue is to completely close the functionally insufficient vein lumen by injecting medical glue into the vein lumen, so as to achieve the purpose of eliminating reflux. By closing the superficial vein with vein closure glue, permanent treatment of varicosis can be achieved. UTILITARIAN CONTENT

[0004] The utility model aims at solving the problem of how to avoid the retreat of the pusher during injection, thereby ensuring smooth and stable glue injection and completing sufficient glue output, and further realizing the closure of the vein. The purpose is achieved in the following way:

[0005] The first aspect of the utility model proposes a conveying device, which comprises:

[0006] A housing, an installation cavity is formed in the interior of the housing, and the installation cavity is provided with a fixed part at one end of a first shaft;

[0007] A pusher, at least part of the pusher is arranged in the installation cavity, and the pusher is configured to be movable along the first shaft towards the direction of the fixed part;

[0008] An elastic support, the elastic support is arranged in the installation cavity and on one side of the pusher along a second shaft, the second shaft intersects the first shaft, and part of the elastic support abuts against the pusher.

[0009] In addition, the conveying device according to the utility model can also have the following additional technical features:

[0010] In some embodiments of the utility model, the elastic support piece includes a body part, a first support part and a second support part, the first support part extends from the body part to a side away from the pushing piece and abuts with the inner wall of the mounting cavity, the second support part extends from the body part to a side close to the pushing piece and abuts with the pushing piece, at least one first support part extends to a direction non-perpendicular to the first axis, at least one second support part extends to a direction non-perpendicular to the first axis.

[0011] In some embodiments of the utility model, the first support part is provided with a first end part abutting with the inner wall of the mounting cavity, the size of the first end part along the third axis is greater than the size of the first end part along the first axis, the plane where the first axis and the second axis are located intersects with the third axis.

[0012] And / or, the second support part is provided with a second end part abutting with the pushing piece, the size of the second end part along the third axis is greater than the size of the second end part along the first axis, the plane where the first axis and the second axis are located intersects with the third axis.

[0013] In some embodiments of the utility model, the second axis intersects perpendicularly with the first axis, a plane along the first axis and perpendicular to the second axis is defined as a first plane, the number of the first support parts is multiple, the multiple first support parts include a first proximal end support part and a first distal end support part, the first proximal end support part is arranged at the proximal end of the body part along the first axis and extends towards the proximal end of the conveying device, the first distal end support part is arranged at the distal end of the body part along the first axis and extends towards the distal end of the conveying device, the extension direction of the first proximal end support part is arranged at a third non-right angle with the first plane, and / or the extension direction of the first distal end support part is arranged at a fourth non-right angle with the first plane.

[0014] In some embodiments of the utility model, the second axis intersects perpendicularly with the first axis, a plane along the first axis and perpendicular to the second axis is defined as a first plane, the number of the second support parts is multiple, the multiple second support parts include a second proximal end support part and a second distal end support part, the second proximal end support part is arranged at the proximal end of the body part along the first axis and extends towards the proximal end of the conveying device, the second distal end support part is arranged at the distal end of the body part along the first axis and extends towards the distal end of the conveying device, the extension direction of the second proximal end support part is arranged at a first non-right angle with the first plane, and / or the extension direction of the second distal end support part is arranged at a second non-right angle with the first plane.

[0015] In some embodiments of the utility model, the surface of the pusher towards the elastic support is provided with a first limiting rib, the first limiting rib extends along the first shaft, the free ends of at least two of the second support portions along the third axis are provided on both sides of the first limiting rib, and the plane where the first shaft and the second shaft are located intersects the third axis.

[0016] In some embodiments of the utility model, the conveying device further comprises a trigger assembly, the trigger assembly comprises a trigger and a connecting piece, the trigger is provided on the other side of the pusher along the second axis, part of the trigger is placed in the mounting cavity, and the other part of the trigger extends to the outside of the shell, the part of the trigger placed in the mounting cavity is connected with the connecting piece, the connecting piece can be drivingly connected with the pusher, and the trigger is configured to drive the connecting piece to move and drive the pusher to move towards the fixed portion through the connecting piece.

[0017] In some embodiments of the utility model, the conveying device further comprises a pressing piece, at least part of the pressing piece is provided in the mounting cavity and is provided on the side, away from the pusher, of the elastic support along the second axis, the elastic support is provided with a supporting column towards the pressing piece, the pressing piece is sleeved outside the supporting column and can reciprocate along the second axis, the pressing piece is provided with an abutting portion, and the pressing piece is configured to abut against the connecting piece through the abutting portion and separate the connecting piece from the pusher during movement of the pressing piece towards the pusher along the second axis.

[0018] In some embodiments of the utility model, the elastic support is provided with an avoiding opening at both ends along the third axis, the abutting portion is arranged in the avoiding opening, and the plane where the first shaft and the second shaft are located intersects the third axis.

[0019] In some embodiments of the utility model, a plurality of first guide ribs are arranged in the mounting cavity, the plurality of first guide ribs are arranged in a circumferential direction of the first shaft, and the end faces of the plurality of first guide ribs enclose a guide cavity, the guide cavity extends along the first shaft, and the pusher is arranged in the guide cavity in a slidable manner.

[0020] In some embodiments of the utility model, a plurality of first guide ribs are arranged in the mounting cavity, a guide groove is formed between two adjacent first guide ribs, and part of the pusher is embedded in the guide groove and can move along the first shaft.

[0021] In some embodiments of the utility model, the pusher is provided with a head, the head is arranged in the guide cavity in a way that can slide along the first shaft, the end surface of the first guide rib is matched with the outer profile surface of the head, and the outer profile surface of the head is in abutment or spaced apart from the outer profile surface of the head.

[0022] In some embodiments of the utility model, the pusher comprises a plate body part and a head, the plate body part extends along the first shaft, and the head is arranged at one end close to the fixed part; the plate body part comprises an embedded part which protrudes from the head in a direction perpendicular to the first shaft.

[0023] In some embodiments of the utility model, the trigger is connected to the shell in a rotatable manner, the connecting piece is connected to the part of the trigger arranged in the mounting cavity in a rotatable manner, the pusher is provided with a plurality of first tooth-shaped parts along the surface of the second shaft away from the elastic support, the plurality of first tooth-shaped parts are arranged in sequence along the first shaft, the connecting piece is provided with at least one second tooth-shaped part along the second shaft in the direction of the pusher, and the second tooth-shaped part is in meshing transmission connection with the first tooth-shaped part.

[0024] The second aspect of the utility model further proposes a conveying system, comprising the conveying device of any one of the above, and the conveying system further comprises:

[0025] The syringe comprises a tube body and a push rod, the tube body is connected to the fixed part, the push rod is arranged in the mounting cavity, and part of the push rod is inserted into the tube body, and the pusher is arranged on the side of the push rod away from the tube body along the first shaft;

[0026] The glue feeding guide pipe is connected to the liquid outlet end of the tube body.

[0027] The conveying sheath pipe is sleeved outside the glue feeding guide pipe, and the end of the glue feeding guide pipe away from the syringe extends to the outside of the conveying sheath pipe.

[0028] The conveying device and the conveying system according to the application can provide friction force to the pusher by arranging the elastic support in the mounting cavity and abutting the elastic support with the pusher, so as to avoid the pusher from retreating during injection, improve the position accuracy of the pusher during injection, improve the control of injection precision, ensure smooth and stable glue injection and complete enough glue output, realize the closure of the vein, and reduce the occurrence of medical accidents.

[0029] The above description is only a summary of the technical solutions of the present application. In order to make the technical means of the present application more clearly understood and implemented according to the content of the specification, and in order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0030] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of the preferred embodiments and are not meant to limit the present application. Moreover, the same reference numerals in the different drawings represent the same or similar elements. Among them:

[0031] Figure 1 Structure schematic diagram of a conveying system according to an embodiment of the present application;

[0032] Figure 2 Structure schematic diagram of a conveying system in Figure 1 after removing part of the shell;

[0033] Figure 3 Structure schematic diagram of a conveying device in Figure 1 after removing part of the shell;

[0034] Figure 4 Exploded structure schematic diagram of a conveying device in Figure 1 ;

[0035] Figure 5 Partly cross-sectional structure schematic diagram of a conveying device in Figure 1 ;

[0036] Figure 6 Enlarged structure schematic diagram of part A in Figure 2 ;

[0037] Figure 7 Enlarged structure schematic diagram of part B in Figure 5 ;

[0038] Figure 8 Structure schematic diagram of an elastic support in Figure 4 ;

[0039] Figure 8a Structure schematic diagram of another embodiment of an elastic support;

[0040] Figure 9 Enlarged structure schematic diagram of part C in Figure 7 ;

[0041] Figure 10 Structure schematic diagram of a trigger in Figure 4 ;

[0042] Figure 11 is a structural schematic view of the connecting piece in Figure 4

[0043] Figure 12 is a structural schematic view of the pressing piece in Figure 4

[0044] Figure 13 is a structural schematic view of the pushing piece in Figure 4

[0045] Figure 14 is a structural schematic view of the first housing part in Figure 4

[0046] Figure 15 is a structural schematic view of the D-D cross section in Figure 1

[0047] Figure 16 is an assembled structural schematic view of the glue inlet guide pipe and the conveying sheath pipe in Figure 1 In the drawings, various reference numerals represent the following items:

[0048] 1000, conveying system;

[0049] 100, conveying device;

[0050] 10, outer shell; 11, first housing part; 12, second housing part; 13, fixed part; 14, first positioning rib; 15, first guide rib; 151, guide groove; 16, partition plate; 17, second guide rib; 18, mounting cavity; 181, first chamber; 182, second chamber; 19, guide cavity;

[0051] 20, pushing piece; 21, plate body part; 211, embedding part; 22, first limiting rib; 23, head part; 24, first tooth-shaped part; 241, first side surface;

[0052] 30, elastic support piece; 31, body part; 32, first support part; 321, first end part; 322, first proximal end support part; 323, first distal end support part; 33, second support part; 331, second end part; 332, second proximal end support part; 333, second distal end support part; 34, reinforcing part; 35, support column; 36, protruding part; 37, avoiding opening; 38, reinforcing connecting piece;

[0053]

[0054] ​​​​​​40, trigger assembly; 41, trigger; 411, first arc surface; 412, second arc surface; 413, first insertion hole; 414, second insertion hole; 42, connecting piece; 421, support frame; 422, third insertion hole; 423, extending end; 424, second toothed portion; 4241, second side surface; 43, first pin shaft; 44, first torsion spring; 45, second pin shaft; 46, second torsion spring;

[0055] 50, pressing piece; 51, pressing portion; 52, abutting portion; 53, sleeve portion;

[0056] 200, syringe; 201, tube body; 202, push rod;

[0057] 300, glue inlet conduit; 301, first joint;

[0058] 400, delivery sheath; 401, second joint;

[0059] X, first axis; Y, second axis; Z, third axis. DETAILED DESCRIPTION

[0060] Exemplary embodiments of the present application will be described herein below with reference to the accompanying drawings. While exemplary embodiments of the present application are illustrated, it should be understood that the present application can be embodied in many forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the application to those skilled in the art.

[0061] It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises", "comprising", "includes", "including" and "has" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order

[0062] Although the terms first, second, third, etc. can be used herein to describe various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can be only used to distinguish one element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates otherwise, terms such as "first," "second," and the like can be used herein to describe a variety of elements, components, regions, layers and / or sections. Thus, the first element, component, region, layer or section discussed below can be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

[0063] Spatially relative terms can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. Spatially relative terms can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. These spatially relative terms are intended to encompass different positions of the devices in use or operation in which the devices are oriented in different directions. For example, if a device is turned over, a dependency described as "below" or "beneath" another element or feature would then be oriented "above" or "over" the other element or feature. Thus, the example term "below" can encompass both an orientation of above and below. The terms "above" and "below" can include vertical positions as well as horizontal positions.

[0064] In order to more clearly describe the structure of the present application, the terms "proximal end" and "distal end" are defined herein as terms commonly used in the field of interventional medicine. Specifically, "distal end" refers to the end that is far from the operator during the operation, "proximal end" refers to the end that is close to the operator during the operation, "axial direction" refers to the length direction, and "radial direction" refers to the direction perpendicular to the "axial direction".

[0065] In recent years, with the progress of technology and the popularity of clinical application, the treatment of varicose veins has gradually shifted from traditional traumatic open surgery to endovascular closure surgery. Compared with energy ablation technology, room temperature closure technology represented by vein glue can ensure closure rate while avoiding thermal damage, and does not require injection of swelling anesthetic. In addition, it also has the advantages of short learning curve, short operation time, small patient damage and fast recovery to normal life. Venous glue endovascular closure is to completely close the functional vein lumen by injecting medical glue into the vein lumen, so as to eliminate reflux. By sealing the superficial vein with vein closure glue, permanent treatment of varicose veins can be achieved.

[0066] To solve the problem of how to inject medical glue into the vein, the application provides a delivery device and a delivery system comprising the delivery device, which can realize the injection of medical glue into the vein, and can reduce or avoid the movement of the push rod of the syringe in the direction away from the syringe under the action of the injection liquid, thereby improving the accuracy of the position determination of the pusher and the push rod during the injection process, improving the accuracy of the determination of the glue injection amount, ensuring the smoothness of the injection process, and reducing the occurrence of medical accidents. Meanwhile, compared with the non-elastic support, the elastic support can reduce the resistance of the pusher to the pusher, so that the process of pushing the pusher by pressing the trigger assembly is more labor-saving, thereby reducing the energy consumption of the doctor during the mechanical labor process.

[0067] In combination Figures 1 to 7 The first aspect of the utility model discloses a delivery device 100, wherein it comprises a shell 10, a pusher 20, an elastic support 30 and a trigger assembly 40, the inside of the shell 10 is formed with a mounting cavity 18, the mounting cavity 18 is provided with a fixed part 13 at one end along a first axis X, at least part of the pusher 20 is arranged in the mounting cavity 18, the pusher 20 is configured to be movable in the direction of the fixed part 13 along the first axis X, the elastic support 30 is arranged in the mounting cavity 18 and is arranged on one side of the pusher 20 along a second axis Y, and the second axis Y intersects the first axis X, in the embodiment, the second axis Y is perpendicular to the first axis X, part of the elastic support 30 abuts against the pusher 20, a plane along the first axis and perpendicular to the second axis is defined as a first plane, and the elastic support 30 provides the pusher 20 with an elastic force non-parallel to the first plane.

[0068] At least part of the trigger assembly 40 is arranged in the mounting cavity 18 and is arranged on the other side of the pusher 20 along the second axis Y, the trigger assembly 40 is configured to drive the pusher 20 to move in the direction of the fixed part 13, and in the initial state of the movement of the pusher 20 driven by the trigger assembly 40, the elastic support 30 is extruded and deformed.

[0069] The syringe 200 can be used for the injection of various injection liquids, and for the convenience of description, the application embodiment only takes the injection of medical glue by the syringe 200 as an example for description.

[0070] Specifically, the shell 10 forms the overall appearance structure of the delivery device 100, and the inside of the shell 10 is provided with a mounting cavity 18 for mounting various components. In order to facilitate the mounting of various components into the mounting cavity 18, the shell 10 optionally comprises a first shell part 11 and a second shell part 12 which are detachably connected, and the first shell part 11 and the second shell part 12 can be symmetrical structures and can be connected by clamping, gluing or bolting.

[0071] The fixing part 13 is arranged at one end of the installation cavity 18 along the first axis X, and is used to install the barrel 201 of the syringe 200. The syringe 200 generally comprises the barrel 201 and a push rod 202 inserted into the barrel 201. The barrel 201 has an internal cavity for accommodating medical glue, and the push rod 202 is inserted into the internal cavity in a manner that the push rod 202 can move along the axis of the barrel 201. The barrel 201 is connected to the fixing part 13, and the push rod 202 is arranged in the installation cavity 18 in a manner that the push rod 202 can move along the first axis X. The axis of the barrel 201 is consistent with the first axis X. When the push rod 202 moves along the first axis X and reduces the size of the push rod 202 outside the barrel 201, the push rod 202 can push the medical glue in the barrel 201 to flow out of the barrel 201 from the end away from the push rod 202, so as to enter the glue inlet conduit connected with the syringe 200, thereby realizing injection of the medical glue.

[0072] The outer circumferential surface of the barrel 201 at the end close to the push rod 202 is provided with a fixing protrusion, and the two fixing protrusions of the barrel 201 form an elliptical structure. The fixing part 13 can be a groove formed by an elliptical hole and a circular hole spaced from the elliptical hole at the spacing position. The first shell part 11 and the second shell part 12 are respectively provided with part of the groove, and when the first shell part 11 and the second shell part 12 are assembled, a complete annular groove is formed. The fixing protrusion on the barrel 201 matches the elliptical hole, so that the fixing protrusion on the barrel 201 can be embedded in the groove after rotating ninety degrees after being placed in the elliptical hole, and the fixing protrusion is fixed in the annular groove, thereby connecting the barrel 201 to the shell 10 and placing the push rod 202 in the installation cavity 18, and realizing quick installation and disassembly of the syringe 200.

[0073] The push member 20 is arranged in the installation cavity 18. The push member 20 extends out of the proximal end (close to the user during use) of the shell, and is convenient for repeated use. When the push member 20 moves along the first axis X towards the fixing part 13, the push member 20 abuts against the push rod 202 and can push the push rod 202 to move in the barrel 201, thereby realizing injection of the medical glue in the syringe 200.

[0074] The elastic support 30 is arranged in the mounting cavity 18 and on one side of the pusher 20 along the second axis Y intersecting the first axis X. In the embodiment, the second axis Y intersects the first axis X perpendicularly. Part of the elastic support 30 abuts against the pusher 20 and is configured to provide a friction force along the first axis X to the pusher 20, which is configured to counteract the reverse thrust of the push rod 202 under the action of the pressure difference inside and outside the tube 201 when the push rod 202 abuts against the pusher 20. The second axis Y can be perpendicular to the first axis X. The elastic support 30 can be fixed in the mounting cavity 18 and abut against the pusher 20 and be deformed or have a tendency to be deformed along the second axis Y during abutment, thereby being able to provide a friction force perpendicular to the second axis Y, i.e., a friction force along the first axis X, to the pusher 20, thereby preventing the push rod 202 from retreating. On the one hand, the push rod 202 can generate a reverse thrust towards the pusher 20 under the action of the medical glue in the tube 201 during injection. If the push rod 202 is not subjected to other external forces except the action of the medical glue due to the pressure difference at this time, the push rod 202 and the pusher 20 move away from the tube 201, which can cause the push rod to be pushed back by a certain distance without completely injecting the unit amount of glue, thereby affecting the accuracy of the doctor's judgment of the position of the push rod 202 and the pusher 20 and the judgment accuracy of the injection amount during re-injection, and further reducing the accuracy of injection amount control and the safety of the operation. The friction force provided by the elastic support is configured to counteract the reverse thrust of the push rod 202 under the action of the injection liquid in the tube 201 when the pusher 20 abuts against the push rod 202, i.e., the friction force is greater than the reverse thrust that the medical glue can provide to the push rod 202, thereby preventing the pusher 20 and the push rod 202 from moving away from the barrel 201 of the syringe 200 during injection, thereby ensuring smooth and stable injection and sufficient injection amount, and further achieving the closure of the vein.

[0075] On the other hand, when injecting medical glue, the medical glue is relatively viscous, so the push rod 202 needs to be pressed hard, i.e. the trigger 41 of the delivery device needs to be pressed hard when the delivery device is used. Meanwhile, when injecting medical glue, 3 mL of glue needs to be injected 30 times, 0.1 mL each time, and each time the trigger 41 is pressed to inject glue, the trigger 41 needs to be held for a few seconds (if not held and immediately released, because the glue is viscous and flows slowly, 0.1 mL of glue cannot be completely injected out of the syringe, the push rod of the syringe does not advance 0.1 mL of glue stroke, and after the connecting piece pushes the push piece forward, the push plate may not have advanced far enough to enter the next tooth, so that after the trigger is released, the connecting piece cannot enter the next tooth and slides back into the original tooth), so that 0.1 mL of viscous glue can be slowly injected out of the syringe 200. For repeated 30 times of hard injection, the doctor will spend too much energy and physical strength in mechanical labor, and for intravenous closure intervention surgery, labor-saving design during glue injection is necessary. The plane along the first axis and perpendicular to the second axis is defined as the first plane, the elastic support 30 provides an elastic force to the push piece 20 which is not parallel to the first plane, the elastic support 30 provides an elastic deformation space on the second axis, which can play a labor-saving role when the trigger assembly 40 is pressed, and in one embodiment, as shown in Figures 2-3 the push piece 20 is provided as a push plate structure with a toothed bottom surface, the first axis X is the extension direction of the push plate surface length, the second axis Y is the direction perpendicular to the push plate surface, and the first plane is the plane parallel to the push plate surface.

[0076] At least part of the trigger assembly 40 is arranged in the mounting cavity 18 and on the other side of the push piece 20 along the second axis Y. The trigger assembly 40 can abut the push piece 20 and be used to drive the push piece 20 to move in the direction of the fixed part 13, i.e. along the first axis X. Figure 7The arrow S indicates the direction of the push rod 202, so as to extrude the push rod 202 and inject the medical glue. In the initial state of the trigger assembly 40 driving the pusher 20 to move, the trigger assembly 40 is in the state of being embedded and abutting the pusher 20, or the trigger assembly 40 is in the state of being separated from the pusher 20 from the last separation to the abutting state, and the elastic support 30 is extruded and deformed. Because the elastic support 30 provides the pusher 20 with the elastic force non-parallel to the first surface, the elastic support 30 provides the elastic deformation space on the second axis, and the elastic support can be slightly deformed in the direction away from the pusher 20, so as to reduce the extrusion support of the elastic support 30 on the pusher 20 in the process of the trigger assembly 40 being in contact with the pusher 20, and further reduce the resistance of the elastic support 30 on the pusher 20 in the process of the trigger assembly 40 being in contact with the pusher 20 and pushing the pusher 20 to move forward (because the trigger assembly 40 is in contact with the pusher 20 at this time, the pusher 20 will not retreat under the reverse thrust of the push rod 202 at this time, that is, in the process of the trigger assembly 40 being in contact with the pusher 20, the push rod is not prevented from retreating by the friction force), so as to make the pushing more labor-saving; when the trigger assembly 40 (the connecting piece 42) is separated from the pusher 20, the trigger assembly 40 is no longer in contact with the pusher 20 at this time, and the trigger assembly 40 has no force on the pusher 20, and has no component force on the second axis at this time, the elastic support 30 is in interference fit with the pusher 20 at this time, and provides the static friction force and the support force on the pusher 20, so that the static friction force of the elastic support 30 on the pusher 20 prevents the push rod from retreating.

[0077] According to the delivery device 100 of the present application, the fixed part 13 is arranged at one end of the installation cavity 18 along the first axis X, the tube body of the syringe 200 is connected to the shell 10 through the fixed part 13, and the push rod 202 of the syringe 200 is arranged in the installation cavity 18 in a movable manner along the first axis X, and the pusher 20 is inserted into the installation cavity 18 and can move along the first axis X towards the push rod 202, so as to push the push rod 202 to move along the first axis X, so as to realize the injection of the syringe 200. When the medical glue is stored in the syringe 200, the push rod 202 can be pushed by the pusher 20 to realize the injection of the medical glue into the vein, and can be used for vein closure.

[0078] Meanwhile, the elastic support 30 is arranged in the mounting cavity 18 of the shell 10 and abuts against the pushing member 20 to provide a friction force to the pushing member 20. When no external force is applied to the pushing member 20 to push the push rod 202 during the injection process, the friction force can counteract the reverse thrust of the push rod 202, so that the pushing member 20 and the push rod 202 are prevented from moving away from the barrel 201 of the syringe 200 under the action of the medical adhesive, thereby improving the accuracy of the position determination of the pushing member 20 and the push rod 202 during the injection process, improving the accuracy of the injection amount determination, ensuring the smoothness of the injection process, and reducing the occurrence of medical accidents. Meanwhile, when the pushing member 20 needs to be pushed towards the push rod 202, the elastic support 30 is deformed under compression, which can reduce the resistance of the elastic support 30 to the pushing member 20 compared with a support without elastic deformation, so that the process of pushing the pushing member 20 by the trigger assembly is more labor-saving, thereby reducing the energy consumption of the doctor during the mechanical labor process.

[0079] In combination Figures 2 to 8 As shown in some embodiments of the present application, the elastic support 30 includes a body portion 31, a first support portion 32 and a second support portion 33. The first support portion 32 extends from the body portion 31 towards a side away from the pushing member 20 and abuts against the inner wall of the mounting cavity 18. The second support portion 33 extends from the body portion 31 towards a side close to the pushing member 20 and abuts against the pushing member 20. At least one first support portion 32 extends towards a direction non-perpendicular to the first face, and at least one second support portion 33 extends towards a direction non-perpendicular to the first face, so that the elastic support 30 has elasticity in the second axis. In one embodiment, the pushing member 20 is provided with a pushing plate structure including a tooth-shaped bottom face. The first axis X is the extension direction of the length of the pushing plate face, and the body portion 31 is arranged in parallel with the pushing member 20, i.e., the plate face of the body portion 31 is parallel to the pushing plate face, as shown in Figure 5 In combination Figures 7-8 As shown in some embodiments of the present application, the elastic support 30 includes a body portion 31, a first support portion 32 and a second support portion 33. The first support portion 32 extends from the body portion 31 towards a side away from the pushing member 20 and abuts against the inner wall of the mounting cavity 18. The second support portion 33 extends from the body portion 31 towards a side close to the pushing member 20 and abuts against the pushing member 20. At least one first support portion 32 extends towards a direction non-perpendicular to the first face, and at least one second support portion 33 extends towards a direction non-perpendicular to the first face, so that the elastic support 30 has elasticity in the second axis. In one embodiment, the pushing member 20 is provided with a pushing plate structure including a tooth-shaped bottom face. The first axis X is the extension direction of the length of the pushing plate face, and the body portion 31 is arranged in parallel with the pushing member 20, i.e., the plate face of the body portion 31 is parallel to the pushing plate face, as shown in

[0080] In some embodiments of the present application, the elastic support 30 comprises a body portion 31 and first and second support portions 32 and 33 connected to the body portion 31, the first and second support portions 32 and 33 being respectively arranged on opposite sides of the body portion 31 along the second axis Y, wherein the first support portion 32 abuts against the inner wall of the mounting cavity 18, and the second support portion 33 abuts against the pushing member 20, so that the elastic support 30 is clamped between the inner wall of the mounting cavity 18 and the pushing member 20, and deformed or has a tendency to be deformed, thereby providing the pushing member 20 with a friction force along the first axis X and an elastic force along the second axis Y through the elastic support 30.

[0081] Meanwhile, since the first and second support portions 32 and 33 are respectively arranged on opposite sides of the body portion 31 along the second axis Y, the elastic support 30 can provide an elastic force along the second axis Y, thereby facilitating the deformation of the elastic support 30 along the second axis Y and providing a friction force along the first axis X.

[0082] In combination Figures 2 to 8 As shown in the drawings, in some embodiments of the present application, the number of the second support portions 33 is plural, and the plural second support portions 33 comprise a second proximal end support portion 332 and a second distal end support portion 333, the second proximal end support portion 332 being arranged at the proximal end of the body portion 31 along the first axis X, extending towards the proximal end of the delivery device 100, and extending obliquely towards the proximal end, and the second distal end support portion 333 being arranged at the distal end of the body portion 31 along the first axis X, extending towards the distal end of the delivery device 100, and extending obliquely towards the distal end, the extension direction of the second proximal end support portion 332 being arranged at a first non-right angle with the first axis X, and / or the extension direction of the second distal end support portion 333 being arranged at a second non-right angle with the first axis X, so that the elastic support provides an elastic deformation along the second axis. In other embodiments, the extension direction of the second proximal end support portion 332 is arranged at a first non-right angle with the first surface, and / or the extension direction of the second distal end support portion 333 is arranged at a second non-right angle with the first surface, so that the second support portion provides an elastic deformation along the second axis, thereby making the elastic support provide an elastic deformation along the second axis. In the present embodiment, the body portion is a plate-shaped structure, the plate surface of the body portion is arranged parallel to the first surface, the extension direction of the second proximal end support portion 332 is arranged at a first non-right angle with the plate surface of the body portion, and / or the extension direction of the second distal end support portion 333 is arranged at a second non-right angle with the plate surface of the body portion.

[0083] In some embodiments of the utility model, the number of second support parts 33 can be four, four second support parts 33 are arranged on the side of body part 31 along second axis Y towards pusher 20, and four second support parts 33 are symmetrically arranged on both ends of body part 31 along first axis X. Among them, four second support parts 33 include two second proximal end support parts 332 and two second distal end support parts 333, as shown in Figure 8 In combination Figure 3 As shown in the figure, two second proximal end support parts 332 are arranged on the proximal end of body part 31 along first axis X, two second proximal end support parts 332 are arranged at intervals along third axis Z and extend towards the proximal end of conveying device 100 respectively. Two second distal end support parts 333 are arranged on the distal end of body part 31 along first axis X respectively, two second distal end support parts 333 are arranged at intervals along third axis Z and extend towards the distal end of conveying device 100 respectively, and the extension direction of second proximal end support part 332 is arranged at a first included angle with first axis X, and the extension direction of second distal end support part 333 is arranged at a second included angle with first axis X, so that the second proximal end support part 332 and the second distal end support part 333 are in abutment with the pusher 20, and the installation stability of the elastic support part 30 is improved. Among them, the plane where first axis X and second axis Y are located intersects with third axis Z. Optionally, first axis X, second axis Y and third axis Z are perpendicular to each other.

[0084] In some other embodiments of the application, the number of second support parts 33 can be two or more, and two or more second support parts 33 are symmetrically arranged on both ends of body part 31 along first axis X, and the extension direction of any second support part 33 is arranged at an included angle with first axis X respectively, and the extension direction of at least one second support part 33 is arranged at a non-perpendicular included angle with the first plane.

[0085] In combination Figures 2 to 8 As shown in the figure, in some embodiments of the application, the range of the first included angle is 30° to 60°, and / or the range of the second included angle is 30° to 60°. By setting the range of the first included angle to 30° to 60°, and the range of the second included angle to 30° to 60°, the frictional force requirement between the second support part 33 and the pusher 20 can be met, and the elastic deformation of the elastic support part 30 along the second axis Y can be ensured, so as to reduce the pushing force. Optionally, the first included angle can be 45°, and the second included angle can also be 45°.

[0086] In combination Figures 2 to 8 As shown in the figure, in some embodiments of the application, along first axis X, the abutment between trigger assembly 40 and pusher 20 is located between second proximal end support part 332 and second distal end support part 333, as shown in Figure 3 In combination Figure 5 As shown in the figure.

[0087] In some embodiments of the present application, the trigger assembly 40 comprises a trigger 41 and a connecting member 42, the trigger 41 is arranged on the other side of the pushing member 20 along the second axis Y, part of the trigger 41 is arranged in the mounting cavity 18, and the other part of the trigger 41 extends to the outside of the housing 10, the part of the trigger 41 arranged in the mounting cavity 18 is connected with the connecting member 42. The trigger 41 is used to drive the connecting member 42 to rotate, and the connecting member 42 can abut against the pushing member 20 during the rotation, thereby pushing the pushing member 20 to move towards the fixed part 13. Wherein, when the connecting member 42 abuts against the pushing member 20, the abutting position of the two along the first axis X is arranged between the second proximal support part 332 and the second distal support part 333, that is, the abutting position of the connecting member 42 and the pushing member 20 is arranged opposite to the elastic support member 30 along the second axis Y. According to the principle of lever, when the connecting member 42 provides a pushing force towards the pushing member 20 along the second axis Y, the moment is the smallest, and the force transmitted to the pushing member 20 is larger, thereby the elastic support member 30 can produce a larger deformation along the second axis Y. Conversely, when the deformation of the elastic support member 30 is certain, the connecting member 42 can provide a smaller pushing force towards the pushing member 20 along the second axis Y, and thus it is more labor-saving when driving the pushing member 20 to move towards the fixed part 13 along the first axis X.

[0088] In combination Figures 2 to 8 As shown in the drawings, in some embodiments of the present application, the number of the first support parts 32 is multiple, and the multiple first support parts 32 comprise a first proximal support part 322 and a first distal support part 323, the first proximal support part 322 is arranged at the proximal end of the body part 31 along the first axis X and extends towards the proximal end of the delivery device 100, the first distal support part 323 is arranged at the distal end of the body part 31 along the first axis X and extends towards the distal end of the delivery device 100, and the extension direction of the first proximal support part 322 is arranged at a third non-right angle with the first axis, and / or the extension direction of the first distal support part 323 is arranged at a fourth non-right angle with the first axis X, thereby the elastic support member provides elastic deformation along the second axis. In other embodiments, the extension direction of the first proximal support part 322 is arranged at a third non-right angle with the first surface, and / or the extension direction of the first distal support part 323 is arranged at a fourth non-right angle with the first surface, so as to facilitate the first support part to provide elastic deformation along the second axis, thereby the elastic support member provides elastic deformation along the second axis. In the present embodiment, the body part is a plate structure, the plate surface of the body part is arranged parallel to the first surface, the extension direction of the first proximal support part 322 is arranged at a third non-right angle with the plate surface of the body part, and / or the extension direction of the first distal support part 323 is arranged at a fourth non-right angle with the plate surface of the body part.

[0089] In some embodiments of the utility model, the number of first support parts 32 can be two, two first support parts 32 are respectively arranged on the side of body part 31 away from pushing piece 20 along second axis Y, and two first support parts 32 are symmetrically arranged on both ends of body part 31 along first axis X. Among them, two first support parts 32 are respectively first proximal end support part 322 and first distal end support part 323, first proximal end support part 322 is arranged on the proximal end of body part 31 along first axis X and extends towards the proximal end of conveying device 100. First distal end support part 323 is arranged on the distal end of body part 31 along first axis X and extends towards the distal end of conveying device 100, and the extension direction of first proximal end support part 322 is arranged at a third included angle that is not a right angle with first axis, and / or the extension direction of first distal end support part 323 is arranged at a fourth included angle that is not a right angle with first axis X, and each support part of the elastic support piece is arranged in the structure design of the inclined support leg, which can make the elastic support piece 30 provide elasticity, and at the same time, the elastic size of the elastic support piece is designed to meet the elastic demand; first proximal end support part 322 and first distal end support part 323 are in abutment with the inner wall of mounting cavity 18, which improves the mounting stability, ensures the stability of interference fit and stress stability.

[0090] In some other embodiments of the application, the number of first support parts 32 can be more, and more first support parts 32 are symmetrically arranged on both ends of body part 31 along first axis X, and the extension direction of any first support part 32 is respectively arranged at an included angle with first axis X.

[0091] In combination Figures 2 to 8 As shown in the drawings, in some embodiments of the application, the range of the third included angle is 30° to 60°, and the range of the fourth included angle is 30° to 60°. By setting the range value of the third and fourth included angles to 30° to 60°, the friction requirement between the first support part 32 and the inner wall of the mounting cavity 18 can be met, and the elastic support piece 30 along the second axis Y can also have sufficient elastic deformation. Optionally, in one of the embodiments, the third included angle is 45°, and the fourth included angle is also 45°.

[0092] In combination Figures 2 to 8 As shown in the drawings, in some embodiments of the application, all first support parts 32 have a first abutment area with the inner wall of the mounting cavity 18, all second support parts 33 have a second abutment area with the pushing piece 20, and the sum of the first abutment area and the second abutment area can be 10mm 2 -20mm 2 , and the first abutment area is smaller than the second abutment area, which can ensure that the elastic support piece provides sufficient friction to the pushing plate, and at the same time, does not lose too much elasticity.

[0093] In combination Figures 2 to 8As shown, in some embodiments of the present application, the first support portion 32 is provided with a first end portion 321 abutting the inner wall of the mounting cavity 18, the dimension of the first end portion 321 along the third axis Z is greater than the dimension of the first end portion 321 along the first axis X, and the plane where the first axis X and the second axis Y are located intersects the third axis Z. Optionally, the first axis X, the second axis Y and the third axis Z are perpendicular to each other.

[0094] In some embodiments of the present application, the part of the first support portion 32 abutting the inner wall of the mounting cavity 18 is the first end portion 321, the first end portion 321 is curved at the tail end of the first support portion 32 and is arranged parallel to the pushing member 20, and the first end portion 321 and the inner wall of the mounting cavity 18 can be in surface contact or line contact. When in surface contact, the dimension of the abutting surface along the third axis Z is greater than the dimension along the first axis X. When in line contact, the abutting line is a line segment extending along the third axis Z. Optionally, two first proximal support portions and two first distal support portions are provided, and the first end portion 321 and the inner wall of the mounting cavity 18 can be in surface contact, wherein the dimension of the contact surface between the first end portion 321 and the mounting cavity 18 along the first axis X is 0.5 mm, and the dimension along the third axis Z is 5.0 mm, so the total first abutting area is 5 mm Figure 7 and Figure 8 As shown, one first proximal support portion and one first distal support portion are provided, and two first support portions are provided in total, and the first end portion 321 and the inner wall of the mounting cavity 18 can be in surface contact, wherein the dimension of the contact surface between the first end portion 321 and the mounting cavity 18 along the first axis X is 0.5 mm, and the dimension along the third axis Z is 5.0 mm, so the total first abutting area is 5 mm 2 .

[0095] In combination Figures 2 to 8 As shown, in some embodiments of the present application, the second support portion 33 is provided with a second end portion 331 abutting the pushing member 20, the second end portion 331 is curved at the tail end of the second support portion 33 and is arranged parallel to the pushing member 20, the dimension of the second end portion 331 along the third axis Z is greater than the dimension of the second end portion 331 along the first axis X, and the plane where the first axis X and the second axis Y are located intersects the third axis Z. Optionally, the first axis X, the second axis Y and the third axis Z are perpendicular to each other.

[0096] In some embodiments of the present application, the part of the second support portion 33 abutting the pushing member 20 is the second end portion 331, the second end portion 331 is curved at the tail end of the second support portion 33 and is arranged parallel to the pushing member 20, and the second end portion 331 and the pushing member can be in surface contact or line contact. When in surface contact, the dimension of the abutting surface along the third axis Z is greater than the dimension along the first axis X. When in line contact, the abutting line is a line segment extending along the third axis Z. Optionally, two second proximal support portions and two second distal support portions are provided, and four second support portions are provided in total, and the second end portion 331 and the pushing member 20 can be in surface contact, wherein the dimension of the contact surface between the second end portion 331 and the pushing member 20 along the first axis X is 0.5 mm, and the dimension along the third axis Z is 5.4 mm, so the total second abutting area is 10.8 mm 2This ensures that the elastic support near the push plate has sufficient contact area with the push plate to provide enough friction and prevent the push plate from moving backward due to the stickiness of the glue and the negative pressure of the syringe.

[0097] Combination Figures 2 to 8 As shown, in some embodiments of this application, with the body portion 31 as the boundary, the total support strength of the elastic support member 30 on the side away from the pusher 20 is less than the total support strength of the elastic support member 30 on the side closer to the pusher 20. That is, the support strength provided by all the first support portions 32 is less than the support strength provided by all the second support portions 33. In other words, with the body portion 31 as the boundary, the elastic capacity of the elastic support member 30 on the side away from the pusher 20 is greater than the elastic capacity of the elastic support member 30 on the side closer to the pusher 20. When the elastic support member 30 is pressed by a flat plate parallel to the first surface along the second axis Y, and the same pressing force is applied from top to bottom, the body portion 31 shifts towards the direction where the first support portion is located.

[0098] By setting the total support strength of the first support part 32 to be less than that of the second support part 33, when the elastic support member 30 is compressed along the second axis Y, the first support part 32 is more susceptible to compression deformation than the second support part 33, and the deformation on one side of the first support part 32 is greater than that on one side of the second support part. This ensures that the elastic support member 30 has elasticity and elastic deformation on the second axis, which can save effort during injection, and also ensures that the friction between the elastic support member 30 and the pusher 20 is not greatly lost.

[0099] Combination Figures 2 to 8 As shown, in some embodiments of this application, the thickness of the first support portion 32 is between 1.7 mm and 2.3 mm in a direction perpendicular to the extension direction of the first support portion 32; and / or, the thickness of the second support portion 33 is between 1.7 mm and 2.3 mm in a direction perpendicular to the extension direction of the second support portion 33.

[0100] In some embodiments of this application, the thickness of the first support portion 32 can be any value between 1.7 mm and 2.3 mm, thereby making the first support portion 32 easily deformable and providing elastic force. Optionally, the thickness of the first support portion 32 can be 2.0 mm. The thickness of the second support portion 33 can be any value between 1.7 mm and 2.3 mm, thereby making the second support portion 33 easily deformable and providing elastic force. Optionally, the thickness of the second support portion 33 can be 2.0 mm.

[0101] Combination Figures 2 to 8As shown, in some embodiments of the present application, the elastic support 30 is in interference fit with the inner wall of the mounting cavity 18 and the pusher 20, and the interference amount is 0.3mm to 0.8mm, and optionally, the interference amount is 0.5mm. The interference amount here refers to the height of the elastic support 30 on the second axis Y (the maximum height between the upper abutting surface and the lower abutting surface) when the elastic support 30 is not placed in the natural state in the mounting cavity, and the height difference between the upper and lower abutting positions of the elastic support in the mounting cavity on the second axis Y.

[0102] In some embodiments of the present application, the elastic support 30 is clamped between the inner wall of the mounting cavity 18 and the pusher 20 and is extruded to deform, that is, the elastic support 30 is in interference fit with the inner wall of the mounting cavity 18 and the pusher 20.

[0103] In combination Figures 2 to 8 As shown, in some embodiments of the present application, in order to improve the supporting strength of the elastic support 30, the elastic support 30 is further provided with a reinforcing portion 34. Optionally, the first supporting portion 32 is provided with the reinforcing portion 34 at one end connected with the body portion 31, and the reinforcing portion 34 is arranged on the inner side of the first supporting portion 32. The reinforcing portion 34 can increase the thickness dimension of the connecting part of the first supporting portion 32 and the body portion 31, thereby improving the supporting strength of the first supporting portion 32, keeping the end of the first supporting portion 32 away from the body portion 31 elastic, and avoiding the deformation amount of the first supporting portion 32 on the second axis Y from being too large, avoiding the first supporting portion 32 providing too much elastic deformation, and avoiding the risk of failure of the elastic support due to aging.

[0104] In one embodiment, as Figure 8aAs shown, the two second support parts opposite on the first axis X are provided with a reinforcing connector 38, that is, the second proximal end support part 332 and the second distal end support part 333 are connected by the reinforcing connector 38, the reinforcing connector 38 can relatively enhance the stability of the relative position of the two second support parts connected on the first axis X, reduce the deformation of the second support part, that is, the deformation of the second support part exists in the part of the second support part from the reinforcing connector 38 to the second support part between the reinforcing connector 38 and the pushing piece 20, thereby improving the support strength of the second support part, keeping the end of the second support part 33 close to the pushing plate elastic, but not too large in the deformation amount on the second axis Y, and ensuring that the total support strength of the elastic support piece 30 away from the pushing piece 20 side is less than that of the elastic support piece 30 close to the pushing piece 20 side, thereby facilitating the extrusion of the elastic support piece 30 along the second axis Y, making one side of the first support part 32 more easily deformed than the other side of the second support part 33, and making the deformation amount of the first support part 32 side larger than that of the second support part side, thereby ensuring that the elastic support piece 30 has a spring force and elastic deformation on the second axis, can save more power during injection, and the friction between the elastic support piece 30 and the pushing piece 20 is not lost much.

[0105] In combination Figures 2 to 11 As shown, in some embodiments of the present application, the trigger assembly 40 includes a trigger 41 and a connector 42, the trigger 41 is rotatably connected with the shell 10, the connector 42 is rotatably connected with the part of the trigger 41 arranged in the mounting cavity 18, the pushing piece 20 is provided with a plurality of first tooth-shaped parts 24 away from the surface of the elastic support piece 30 along the second axis Y, the plurality of first tooth-shaped parts 24 are arranged in sequence along the first axis X, the connector 42 is provided with at least one second tooth-shaped part 424 away from the surface of the pushing piece 20 along the second axis Y, and the second tooth-shaped part 424 is in meshing and transmission connection with the first tooth-shaped part 24. In other embodiments, the connector 42 is provided with at least two second tooth-shaped parts 424 away from the surface of the pushing piece 20 along the second axis Y, such as Figure 9 In combination Figure 11 As shown, three second tooth-shaped parts are arranged, which can increase the contact between the connector 42 and the pushing piece 20, and make the pushing more labor-saving.

[0106] In some embodiments of the present application, part of the trigger 41 is inserted into the mounting cavity 18 and used to install the connector 42, and the connector 42 can be in transmission connection with the pushing piece 20 under the drive of the trigger 41, thereby driving the pushing piece 20 to move towards the fixed part 13, and then driving the push rod 202 to move towards the fixed part 13 through the pushing piece 20, to realize the liquid injection process of the injector 200.

[0107] Among them, as shown in Figures 2-4 In combination Figure 6 andFigure 10 As shown, part of the trigger 41 is inserted into the mounting cavity 18 and rotatably connected to the outer casing 10. Another part of the trigger 41 is located outside the outer casing 10 for ease of operation. The portion of the trigger 41 located outside the outer casing 10 has a first arc-shaped surface 411 and a second arc-shaped surface 412 for easy gripping and operation. The portion of the trigger 41 located inside the mounting cavity 18 has a first insertion hole 413 and a second insertion hole 414. The first insertion hole 413 is used to insert a first pin 43 and is rotatably fitted onto the outside of the first pin 43. The first pin 43 is fixed inside the mounting cavity 18, thereby enabling the rotation of the trigger 41. A first torsion spring 44 is also sleeved on the outside of the first pin 43. One end of the first torsion spring 44 abuts against the inner wall of the mounting cavity 18, and the other end abuts against the trigger 41. When the trigger 41 is pressed, it compresses the first torsion spring 44, causing it to elastically deform. When the trigger 41 loses its pressing force, the first torsion spring 44 can return to its original shape through its own elastic force, and drive the trigger 41 back to its original position so that it can be pressed again. The second insertion hole 414 is used to insert the second pin 45 and to connect the second pin 45. The connecting member 42 is rotatably sleeved on the outside of the second pin 45, thereby realizing the rotation of the connecting member 42 relative to the trigger 41. Wherein, as Figure 11 As shown, the connector 42 includes a support frame 421, which is a frame structure with an opening in the center, into which part of the trigger 41 can be inserted. Third insertion holes 422 are respectively provided on opposite sides of the support frame 421. The second pin 45 can pass through the third insertion holes 422 and the second insertion hole 414, thereby achieving a rotatable connection between the support frame 421 and the trigger 41. A second torsion spring 46 is also sleeved on the outside of the second pin 45. One end of the second torsion spring 46 abuts against the trigger 41, and the other end abuts against the support frame 421. When the trigger 41 is pressed, it rotates and compresses the second torsion spring 46. The second torsion spring 46 is compressed and undergoes elastic deformation, simultaneously driving the connector 42 to move together, thereby driving the pusher 20 to move towards the distal end and compress the push rod 202. When the trigger 41 loses its pressing force, the first torsion spring 44 and the second torsion spring 46 return to their original state through their own elastic force, and drive the trigger 41 and the connecting member 42 back to their original position so that the push member 20 can be pressed again.

[0108] To facilitate the movement of the pusher 20 along the first axis X towards the distal end, the pusher 20 has multiple first toothed portions 24 on its surface facing away from the elastic support 30 along the second axis Y. Specifically, the surface of the pusher 20 facing the trigger 41 has multiple first toothed portions 24, arranged sequentially along the first axis X. The connecting member 42 has at least one second toothed portion 424 on its surface facing the pusher 20 along the second axis Y. The second toothed portion 424 meshes with and is connected to the first toothed portion 24. When the trigger 41 is pressed, the trigger 41 rotates around the first pin 43, driving the connecting member 42 to move along the first axis X towards the fixed part 13 via the second pin 45. The first toothed portion 24 and the second toothed portion 424 engage in a transmission relationship, thereby driving the pusher 20 to push the push rod 202 to achieve injection. When the trigger 41 is stopped, the trigger 41 drives the connecting member 42 to return to its original position via the second pin 45. During the separation of the connecting member 42 from the pusher 20, the pusher 20 will not move away from the fixed part 13 under the friction of the elastic support 30, thereby improving the positional accuracy of the pusher 20 and the push rod 202. Since multiple first toothed portions 24 are arranged sequentially along the first axis X, and adjacent first toothed portions are equally spaced, the pusher 20 can be quantitatively pushed by repeatedly pressing the trigger 41 and sequentially driving the second toothed portion 424 with the multiple first toothed portions 24, thereby improving the accuracy of injection. Optionally, there can be multiple second toothed portions 424, and multiple second toothed portions 424 can be arranged sequentially along the first axis X, which can increase the contact area between the connecting member 42 and the pusher 20, making pushing less effort and improving the transmission reliability between the connecting member 42 and the pusher 20.

[0109] Combination Figures 2 to 11 As shown, in some embodiments of this application, the first toothed portion 24 is provided with a first side surface 241 that abuts against the second toothed portion 424, and the second toothed portion 424 is provided with a second side surface 4241 that abuts against the first toothed portion 24, wherein at least one of the first side surface 241 and the second side surface 4241 is perpendicular to the first axis X.

[0110] In some embodiments of this application, such as Figure 7 Combination Figure 9As shown, the first side surface 241 and the second side surface 4241 can be perpendicular to the first axis X. That is, the first toothed portion 24 and the second toothed portion 424 abut and mesh at an angle perpendicular to the first axis X, thereby ensuring that the first toothed portion 24 and the second toothed portion 424 have the maximum contact stroke, which can maximize the contact time between the connecting member 42 and the pushing member 20, thus maximizing the pushing stroke of the pushing member 20 along the first axis X. When the meshing angle of the first side surface 241 and the second side surface 4241 with the first axis X is less than 90°, the maximum stroke of the pushing member 20 will be reduced. When the meshing angle of the first side surface 241 and the second side surface 4241 with the first axis X is greater than 90°, it will interfere with the meshing process, thus making transmission difficult.

[0111] Combination Figures 2 to 12 As shown, in some embodiments of this utility model, the conveying device 100 further includes a pressing member 50. At least a portion of the pressing member 50 is disposed in the mounting cavity 18 and is disposed along the second axis Y on the side of the elastic support member 30 away from the pusher member 20. The elastic support member 30 is provided with a support column 35 facing the pressing member 50. The pressing member 50 is sleeved on the outside of the support column 35 and can reciprocate along the second axis Y. The pressing member 50 is provided with an abutting part 52. The pressing member 50 is configured to abut against the connecting member 42 through the abutting part 52 during the movement of the pressing member 50 towards the pusher member 20 along the second axis Y, and push the connecting member 42 to separate from the pusher member 20.

[0112] In some embodiments of this utility model, the pressing member 50 includes a pressing part 51 and an abutting part 52. Part of the pressing part 51 is located outside the outer casing 10, while another part of the pressing part 51 is placed inside the mounting cavity 18 and sleeved onto the outside of the support column 35 for pressing operations. The abutting part 52 is located inside the mounting cavity 18 and abuts against the connecting member 42 during the pressing process of the pressing part 51, thereby pushing the connecting member 42 to move along the second axis Y in a direction away from the pushing member 20. This separates the connecting member 42 from the pushing member 20, facilitating manual retraction of the pushing member 20 and allowing the conveying device to be reused.

[0113] Specifically, pressing the pressing member 50 separates the first toothed portion 24 and the second toothed portion 424, thereby releasing the limiting effect of the second toothed portion 424 on the first toothed portion 24 along the first axis X, and allowing the pushing member 20 to move along the first axis X in a direction away from the push rod 202. The support frame 421 has an extended end 423 along the second axis Y towards the pushing member 20. The abutting portion 52 abuts against the extended end 423, thereby driving the connecting member 42 to rotate via the pressing member 51 and separating the connecting member 42 from the pushing member 20. To improve the stability of the pressing member 50 when pressing the connecting member 42, there are two abutting portions 52, which are arranged opposite each other along the third axis Z. The number of extended ends 423 is the same as the number of abutting portions 52, and they are arranged in a one-to-one correspondence with the abutting portions 52. Meanwhile, the dimension of the end of the abutting portion 52 that contacts the protruding end 423 is larger than the dimension of the end of the abutting portion 52 facing the pressing portion 51, thereby increasing the contact area between the abutting portion 52 and the protruding end 423 and improving the stability of the pressing process. The two protruding ends 423 are respectively located on both sides of the connecting member 42 along the third axis Z, extending to the side of the pushing member 20 along the second axis Y facing the pressing member 50, and abutting against the abutting portion 52, as shown below. Figures 11-12 Combination Figure 6 As shown.

[0114] Optionally, the support post 35 may be located at the center of the main body 31, and the pressing part 51 has a sleeve part 53 on its surface facing the support post 35. The sleeve part 53 has a cylindrical hole at its center, and the support post 35 is inserted into the cylindrical hole. In order to facilitate the pressing part 51 to automatically spring back to its original position after being pressed, a spring (not shown in the figure) is sleeved on the outside of the support post 35. One end of the spring abuts against the main body 31, and the other end abuts against the pressing part 50.

[0115] In some embodiments of this utility model, such as Figure 8 As shown, the main body 31 has a protrusion 36 on the side facing the pressing member 50. The protrusion 36 is arranged around the outside of the support column 35 and can be partially arc-shaped. The two ends of the protrusion 36 are respectively connected to two first support parts 32, which improves the connection strength of the first support parts 32, thereby preventing the first support parts 32 from being too elastic or breaking. It also facilitates the adjustment of the elasticity of the elastic support member 30, while maintaining the connection strength and avoiding elastic failure that may be caused by the aging of the elastic support member. After the spring is sleeved on the outside of the support column 35, the end of it that abuts against the main body 31 is located between the support column 35 and the protrusion 36, thereby limiting the radial direction of the spring through the support column 35.

[0116] In some embodiments of this utility model, the elastic support member 30 is provided with clearance openings 37 at both ends along the third axis Z, and the abutment portion 52 passes through the clearance openings 37. The plane containing the first axis X and the second axis Y intersects with the third axis Z. In some embodiments of this utility model, since the pressing member 50 and the connecting member 42 are respectively provided on both sides of the elastic support member 30 along the second axis Y, in order to prevent the elastic support member 30 from interfering with the abutment of the pressing member 50 and the connecting member 42, the body portion 31 of the elastic support member 30 is provided with clearance openings 37 at both ends along the third axis Z. The abutment portion 52 passes through the clearance opening 37 and can abut against the protruding end 423, or the protruding end 423 passes through the clearance opening 37 and can abut against the abutment portion 52, or the protruding end 423 abuts against the abutment portion 52 at the clearance opening 37.

[0117] Combination Figures 2 to 13 As shown, in some embodiments of this utility model, the surface of the pusher 20 facing the elastic support 30 is provided with a first limiting rib 22, the first limiting rib 22 extends along the first axis X, and the free ends of at least two of the plurality of second support portions 33 are provided on both sides of the first limiting rib 22 along the third axis Z. The plane containing the first axis X and the second axis Y intersects with the third axis Z.

[0118] In some embodiments of this utility model, the pusher 20 includes a plate portion 21, which is a generally plate-shaped structure. A first limiting rib 22 is provided on the surface facing the elastic support 30, extending along a first axis X. The second support portion 33 includes a fixed end and a free end. The fixed end is connected to the main body portion 31, and the free end abuts against the plate portion 21 and provides friction. Two second proximal support portions cross the first limiting rib 22, and two second distal support portions cross the first limiting rib 22, thereby cooperating with the second support portions 33 on both sides through the first limiting rib 22 to limit the elastic support 30 and the pusher 20 along a third axis Z. Optionally, the elastic support 30 includes two second proximal support portions 332 disposed at the proximal end and two second distal support portions 333 disposed at the distal end. The two second proximal support portions 332 are respectively disposed on both sides of the first limiting rib 22 along the third axis Z, and the two second distal support portions 333 are respectively disposed on both sides of the first limiting rib 22 along the third axis Z.

[0119] In some embodiments of this utility model, the number of first limiting ribs 22 can be two, and the two first limiting ribs 22 are spaced apart along the third axis Z. The number of second support parts 33 can be four. The main body part 31 is provided with two second proximal support parts and two second distal support parts, and the two second proximal support parts are spaced apart along the third axis Z. The two first limiting ribs 22 are spaced apart along the third axis Z, and the two second proximal support parts cross the two first limiting ribs 22, and the two second distal support parts cross the two first limiting ribs 22. That is, the two first limiting ribs 22 are spaced apart between the two proximal support parts, and the two first limiting ribs 22 are spaced apart between the two distal support parts. The free ends of the four second support parts 33 abut against the plate part 21.

[0120] Combination Figures 2 to 15 As shown, in some embodiments of this utility model, the mounting cavity 18 is provided with a plurality of first guide ribs 15, the plurality of first guide ribs 15 are arranged circumferentially along the first axis X, and the end faces of the plurality of first guide ribs 15 surround a guide cavity 19, the guide cavity 19 extends along the first axis X, and the distal end of the pusher 20 is slidably disposed in the guide cavity 19.

[0121] In some embodiments of this utility model, by providing a plurality of first guide ribs 15 in the mounting cavity 18, the plurality of first guide ribs 15 are spaced apart in the mounting cavity 18 along the first axis X, thereby the plurality of first guide ribs 15 facing one end of the pusher 20 together form a limiting structure in the circumferential direction, the limiting structure forming a guide cavity 19 for accommodating the pusher 20, thereby allowing the distal end of the pusher 20 to move along the first axis X in the guide cavity 19.

[0122] Combination Figures 2 to 15 As shown, in some embodiments of this application, the mounting cavity 18 is provided with a plurality of first guide ribs 15, and a guide groove 151 is formed between two adjacent first guide ribs 15 on the second axis Y, in combination with Figure 7 As shown, part of the pusher 20 is embedded in the guide groove 151 and can move along the first axis X.

[0123] In some embodiments of this utility model, combined with Figure 14As shown, the mounting cavity 18 is provided with multiple partitions 16. The surfaces of the partitions 16 are arranged along the second axis Y. The partitions 16 are connected to the inner wall of the mounting cavity 18, thereby improving the support strength of the outer shell 10. The mounting cavity 18 is divided into a first chamber 181 and a second chamber 182 along the first axis X. The end of the first chamber 181 facing away from the second chamber 182 is provided with a fixing part 13. The push rod 202 of the syringe 200 is located in the first chamber 181. The second chamber 182 is used to install the trigger assembly 40, the elastic support 30 and the pusher 20. Part of the pusher 20 can extend into the first chamber 181 and is used to push the push rod 202.

[0124] Optionally, the first chamber 181 is provided with a plurality of first guide ribs 15 on both sides of the third axis Z. Each first guide rib 15 extends along the first axis X, and a guide groove 151 is formed between two first guide ribs 15 on the same side. The plate body 21 of the pusher 20 can be embedded in the guide groove 151 on both sides of the third axis Z, so that the pusher 20 can only move along the first axis X under the action of the guide groove 151 and will not tilt, thereby ensuring the stability of the push.

[0125] Optionally, the second chamber 182 is provided with a plurality of second guide ribs 17 on both sides of the third axis Z. Each second guide rib 17 extends along the first axis X, and an extension guide portion along the guide groove 151 on the first axis is formed between two second guide ribs 17 on the same side, so that the pusher 20 can ensure its pushing stability throughout the entire stroke of the first axis X.

[0126] Optionally, the first chamber 181 is further provided with two first positioning ribs 14, which are arranged along the second axis Y, and a plurality of first guide ribs 15 are located between the two first positioning ribs 14. The dimension of the cavity formed between the two first positioning ribs 14 along the second axis Y is approximately equal to the dimension of the push rod 202 along the second axis Y. The push rod 202 of the syringe 200 is located between the two first positioning ribs 14, thereby reducing the shaking of the push rod along the second axis Y through the two first positioning ribs 14.

[0127] Combination Figures 2 to 15 As shown, in some embodiments of this utility model, the pusher 20 is provided with a head 23 (far end head). The head 23 is disposed in the guide cavity 19 in a manner that can slide along the first axis X. The end face of the first guide rib 15 is adapted to the outer contour surface of the head 23 and contacts the outer contour surface of the head 23 without pressure or spacing, so as to ensure that the pusher 20 is pushed smoothly.

[0128] like Figure 13As shown, the plate body 21 also includes an insert 211 for embedding in the guide groove 151. The insert 211 protrudes from the head 23 along the plate surface of the plate body 21 in a direction perpendicular to the first axis X. Optionally, the insert 211 protrudes from the head 23 along the third axis so that when the insert 211 is embedded in the guide groove 151, the head 23 can move smoothly along the guide cavity on the first axis X, while maintaining the stability of the push and preventing the distal head of the pusher 20 from tilting up.

[0129] In some embodiments of this utility model, the head 23 of the pusher 20 is inserted into the guide cavity 19 and abuts against the tail of the push rod 202. To allow the head 23 to push the push rod 202 more smoothly, the end face shape of the head 23 can be consistent with or match the end face shape of the tail of the push rod 202; optionally, the end face of the head 23 can be circular. The end face of the first guide rib 15 facing the head 23 matches the outer contour surface (circumferential surface around the first axis X) of the head 23 and contacts the outer contour surface of the head 23 without applying pressure or being spaced apart. When the end face of the first guide rib for guidance contacts the head 23 without applying pressure, it can limit the head 23 along the third axis Z, thereby allowing the pusher 20 to move along the first axis X, reducing or preventing the pusher 20 from wobbling and causing unstable pushing. Optionally, when the distal end face of the head 23 is circular, the outer contour surface of the head 23 is a circular surface, and the end face of the first guide rib 15 facing the head 23 can be a partially arc surface that matches the circular surface.

[0130] Combination Figures 1 to 16 As shown, the second aspect of this utility model also proposes a delivery system 1000, which includes the delivery device 100 of any of the above embodiments. The delivery system 1000 also includes a syringe 200, an adhesive inlet conduit 300, and a delivery sheath 400. The syringe 200 includes a tube body 201 and a push rod 202. The tube body 201 is fitted and connected to the fixing part 13. The push rod 202 is disposed in the mounting cavity 18, and part of the push rod 202 is inserted into the tube body 201. The pusher 20 is disposed along the first axis X on the side of the push rod 202 away from the tube body 201. The adhesive inlet conduit 300 is connected to the liquid outlet end of the tube body 201. The delivery sheath 400 is sleeved on the outside of the adhesive inlet conduit 300. The end of the adhesive inlet conduit 300 away from the syringe 200 extends to the outside of the delivery sheath 400 to facilitate direct injection of adhesive to the target position.

[0131] In some embodiments of this invention, the syringe 200's tube 201 is fixed to the outer casing 10 by a fixing part 13. The syringe 200's plunger 202 is placed in the mounting cavity 18, facilitating its pushing by the pusher 20, thereby squeezing the medical adhesive inside the tube 201 for injection. Most of the tube 201 is located outside the outer casing 10, with its outlet end connected to an inlet catheter 300, allowing the medical adhesive to be injected into the body through the inlet catheter 300. To facilitate the delivery of the inlet catheter 300, the delivery system 1000 is equipped with a delivery sheath 400, which establishes a delivery channel. The inlet catheter 300 can enter the body along this channel, with one end of the inlet catheter 300 extending beyond the syringe 200. The portion of the inlet catheter 300 extending beyond the delivery sheath 400 is equipped with a contrast-enhancing structure, facilitating observation of the distal position of the inlet catheter 300 and improving the accuracy of the injection location.

[0132] Optionally, the delivery system 1000 further includes a first connector 301 and a second connector 401, which can be Luer connectors. The proximal end of the first connector 301 is connected to the syringe 200, and the distal end of the first connector 301 is connected to the glue inlet conduit 300, thereby achieving communication between the syringe 200 and the glue inlet conduit 300. The delivery sheath 400 is sleeved on the outside of the glue inlet conduit 300 and connected to the distal end of the first connector 301 via the second connector 401, thereby achieving connection between the delivery sheath 400 and the glue inlet conduit 300.

[0133] According to the delivery system 1000 of this application, a fixing part 13 is provided at one end of the mounting cavity 18 along the first axis X. The tube 201 of the syringe 200 can be connected to the outer shell 10 through the fixing part 13. The plunger 202 of the syringe 200 is disposed in the mounting cavity 18 in a manner movable along the first axis X. The pusher 20 is inserted into the mounting cavity 18 and can move along the first axis X toward the plunger 202, thereby pushing the plunger 202 to move along the first axis X to realize the injection of the syringe 200. When medical glue is stored in the syringe 200, the pusher 202 can be pushed by the pusher 20 to realize the injection of medical glue into the vein.

[0134] Meanwhile, an elastic support 30 is provided in the mounting cavity 18 of the outer casing 10, and the elastic support 30 abuts against the pusher 20 to provide friction to the pusher 20. When no external force acts on the pusher 20 to push the push rod 202 during the injection process, the friction can counteract the pushing force of the push rod 202, thereby preventing the push rod 202 and the pusher 20 from moving in a direction away from the tube 201 of the syringe 200. This improves the positional accuracy of the pusher 20 and the push rod 202 during the injection process, increases injection precision, and reduces the occurrence of medical accidents. Meanwhile, when it is necessary to push the pusher 20 toward the push rod 202, the elastic support 30 is compressed and deformed along the second axis Y. Compared with the support without elastic deformation, the resistance of the elastic support 30 to the pusher 20 can be reduced during the process of the trigger assembly 40 contacting the pusher 20 and pushing the pusher 20 forward, thus making the push easier. When the trigger assembly 40 (connector 42) separates from the pusher 20, the trigger assembly 40 no longer contacts the pusher 20, the trigger assembly 40 has no force on the pusher 20, and there is no component force on the second axis. At this time, the elastic support 30 is interference-fitted with the pusher 20, and at the same time provides static friction and support force to the pusher 20, so that the static friction of the elastic support 30 on the pusher 20 prevents the push rod from retracting.

[0135] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A conveying device, characterized in that, include: The outer casing has an internal mounting cavity, and a fixing part is provided at one end of the mounting cavity along the first axis; A pusher, at least a portion of which is disposed within the mounting cavity, is configured to be movable along the first axis toward the fixing portion; An elastic support is disposed within the mounting cavity and along a second axis on one side of the pusher, the second axis intersecting the first axis, and a portion of the elastic support abuts against the pusher.

2. The conveying device according to claim 1, characterized in that, The elastic support includes a body portion, a first support portion, and a second support portion. The first support portion extends from the body portion toward a side away from the pusher and abuts against the inner wall of the mounting cavity. The second support portion extends from the body portion toward a side close to the pusher and abuts against the pusher. At least one first support portion extends in a direction not perpendicular to the first axis, and at least one second support portion extends in a direction not perpendicular to the first axis.

3. The conveying device according to claim 2, characterized in that, The first support portion has a first end that abuts against the inner wall of the mounting cavity. The dimension of the first end along the third axis is greater than the dimension of the first end along the first axis. The plane containing the first axis and the second axis intersects the third axis. And / or, the second support portion has a second end that abuts against the pusher, the dimension of the second end along the third axis is greater than the dimension of the second end along the first axis, and the plane containing the first axis and the second axis intersects the third axis.

4. The conveying device according to claim 2, characterized in that, The second axis intersects the first axis perpendicularly. A plane along the first axis and perpendicular to the second axis is defined as the first surface. There are multiple first support portions, including a first proximal support portion and a first distal support portion. The first proximal support portion is disposed at the proximal end of the body portion along the first axis and extends toward the proximal end of the conveying device. The first distal support portion is disposed at the distal end of the body portion along the first axis and extends toward the distal end of the conveying device. The extension direction of the first proximal support portion is set at a third angle that is not right-angled with the first surface, and / or the extension direction of the first distal support portion is set at a fourth angle that is not right-angled with the first surface.

5. The conveying device according to claim 2, characterized in that, The second axis intersects the first axis perpendicularly. A plane along the first axis and perpendicular to the second axis is defined as the first surface. There are multiple second support portions, including a second proximal support portion and a second distal support portion. The second proximal support portion is disposed at the proximal end of the body portion along the first axis and extends toward the proximal end of the conveying device. The second distal support portion is disposed at the distal end of the body portion along the first axis and extends toward the distal end of the conveying device. The extension direction of the second proximal support portion is set at a first angle that is not right-angled with the first surface, and / or the extension direction of the second distal support portion is set at a second angle that is not right-angled with the first surface.

6. The conveying device according to claim 2, characterized in that, The surface of the pusher facing the elastic support is provided with a first limiting rib, the first limiting rib extends along the first axis, and the free ends of at least two of the plurality of second support portions are provided on both sides of the first limiting rib along the third axis, and the plane containing the first axis and the second axis intersects the third axis.

7. The conveying device according to any one of claims 1 to 6, characterized in that, The conveying device further includes a trigger assembly, which includes a trigger and a connector. The trigger is disposed on the other side of the pusher along the second axis. Part of the trigger is placed inside the mounting cavity, and another part of the trigger extends to the outside of the housing. The portion of the trigger disposed inside the mounting cavity is connected to the connector. The connector is capable of drivingly connecting with the pusher. The trigger is configured to drive the connector to move and, through the connector, drive the pusher to move toward the fixed part.

8. The conveying device according to claim 7, characterized in that, The conveying device further includes a pressing member, at least a portion of which is disposed within the mounting cavity and along the second axis on the side of the elastic support member opposite to the pushing member. The elastic support member has a support column facing the pressing member. The pressing member is sleeved on the outside of the support column and is capable of reciprocating along the second axis. The pressing member has an abutting portion. The pressing member is configured to abut against the connecting member through the abutting portion during its movement along the second axis toward the pushing member, thereby pushing the connecting member to separate from the pushing member.

9. The conveying device according to claim 8, characterized in that, The elastic support member has clearance openings at both ends along the third axis, and the abutment portion passes through the clearance openings. The plane containing the first axis and the second axis intersects with the third axis.

10. The conveying device according to any one of claims 1 to 6, characterized in that, The mounting cavity is provided with a plurality of first guide ribs, which are spaced apart circumferentially along the first axis, and the end faces of the plurality of first guide ribs enclose a guide cavity, which extends along the first axis, and the pusher is slidably disposed in the guide cavity.

11. The conveying device according to any one of claims 1-6, characterized in that, The mounting cavity is provided with a plurality of first guide ribs, and a guide groove is formed between two adjacent first guide ribs. Part of the pusher is embedded in the guide groove and can move along the first axis.

12. The conveying device according to claim 10, characterized in that, The pusher has a head, which is slidably disposed in the guide cavity along the first axis. The end face of the first guide rib is adapted to the outer contour surface of the head and abuts against or is spaced apart from the outer contour surface of the head.

13. The conveying device according to claim 1, characterized in that, The pusher includes a plate portion and a head, the plate portion extending along a first axis, and the head being disposed at one end near the fixing portion; the plate portion includes an insert portion that protrudes from the head in a direction perpendicular to the first axis.

14. The conveying device according to claim 7, characterized in that, The trigger is rotatably connected to the housing, and the connector is rotatably connected to the portion of the trigger located in the mounting cavity. The pusher has a plurality of first toothed portions on its surface away from the elastic support along the second axis, and the plurality of first toothed portions are arranged sequentially along the first axis. The connector has at least one second toothed portion along the second axis toward the pusher, and the second toothed portion meshes with the first toothed portion and is connected in a transmission manner.

15. A conveying system, characterized in that, The conveying system includes the conveying device according to any one of claims 1 to 14, and further includes: A syringe, comprising a tube and a plunger, wherein the tube is connected to the fixing part, the plunger is disposed in the mounting cavity and a portion of the plunger is inserted into the tube, and the pusher is disposed along the first axis on the side of the plunger opposite to the tube; A glue inlet conduit, which is connected to the liquid outlet end of the tube body; A delivery sheath is fitted over the outside of the glue inlet conduit, with one end of the glue inlet conduit extending beyond the syringe to the outside of the delivery sheath.

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