Conveying device, clamp device and assembling method

Abstract

The invention discloses a conveying device, clamp equipment and an assembling method, and belongs to the field of medical instruments.In the embodiment of the invention, a sheath assembly is provided with a lateral hole, a connecting assembly is arranged in the sheath assembly in a connected mode, when a transmission assembly moves into a far-end clamping base along a channel, the connecting assembly can be extruded, and the connecting assembly is extruded by the transmission assembly, so that the transmission assembly is driven to rotate; and a part of the elastic part can protrude out of the sheath assembly from the lateral hole and is connected with the clamping seat. Namely, by controlling the transmission assembly to act, the conveying device and the clamp assembly can be smoothly connected, so that the conveying device and the clamp assembly can be arranged to be of a split structure, the conveying device and the clamp assembly can be transported and stored respectively, and occupied space and transportation and storage cost are reduced. After the clamp assembly is released, the conveying device can be connected with another clamp assembly in the same connection mode, so that repeated use is achieved, and the use cost is reduced.

Description

Technical Field

[0001] This application belongs to the technical field of medical devices, and particularly relates to a delivery device, a clip device, and an assembly method. Background Art

[0002] In the field of medical devices, especially in the field of surgical instruments, the application of endoscope technology is becoming more and more widespread. An endoscope is a medical device with illumination and observation functions. By inserting it into the body, doctors can observe the internal situation and thus carry out diagnosis or treatment. In many surgeries, such as gastrointestinal surgeries, respiratory surgeries, etc., hemostatic clips are needed to control bleeding. A hemostatic clip is a common surgical instrument. By sending the clip into the body and then controlling the clip to clamp blood vessels or tissues, the purpose of hemostasis can be achieved.

[0003] Currently, the hemostatic clip is a disposable integral structure. Although this design is simple and convenient, the cost is relatively high, which is not conducive to reducing the surgical cost. Summary of the Invention

[0004] Object of the Invention: Embodiments of this application provide a delivery device, aiming to solve the technical problem of the relatively high cost of disposable use of the currently integral-structured hemostatic clip; another object of the embodiments of this application is to provide a clip device; another object of the embodiments of this application is to provide an assembly method.

[0005] Technical Solution: A delivery device described in an embodiment of this application is used to deliver a clip assembly, and the clip assembly includes a fixture and a clip seat for accommodating at least a part of the fixture; the delivery device includes:

[0006] A sheath assembly having a channel and a lateral hole, the channel penetrating through the proximal end and the distal end of the sheath assembly, and the lateral hole communicating with the channel;

[0007] A connection assembly disposed in the channel and connected to the sheath assembly;

[0008] A transmission assembly penetrating through the channel;

[0009] The distal end of the sheath assembly can be inserted into the clip seat, and the transmission assembly can move along the channel towards the inside of the clip seat to be connected to the fixture;

[0010] When the transmission assembly moves towards the inside of the clip seat, the transmission assembly can squeeze the connection assembly, so that part of the connection assembly protrudes from the lateral hole to the outside of the sheath assembly and is connected to the clip seat.

[0011] In some embodiments, the transmission assembly can also move along the channel towards the proximal end of the sheath assembly to be separated from the fixture;

[0012] When the transmission assembly moves proximally toward the sheath assembly, the connection assembly can be separated from the clamping seat.

[0013] In some embodiments, the connection assembly includes:

[0014] An elastic part having a fixed end and a movable end arranged oppositely, and the fixed end is fixed on the sheath assembly;

[0015] A lug part, which is connected to the movable end and extends from the movable end toward the lateral hole;

[0016] When the transmission assembly moves into the clamping seat, the transmission assembly can squeeze the elastic part to cause elastic deformation thereof, so as to drive the lug part to protrude out of the sheath assembly from the lateral hole and connect with the clamping seat.

[0017] In some embodiments, the sheath assembly has a central axis O;

[0018] The distance between the fixed end and the central axis O is greater than the distance between the movable end and the central axis O.

[0019] In some embodiments, the lug part has a shoulder located inside the sheath assembly;

[0020] The shoulder can contact the side wall of the sheath assembly.

[0021] In some embodiments, the sheath assembly further has an assembly hole communicating with the channel;

[0022] The connection assembly further includes a bending part, which is connected to the fixed end, is arranged in the assembly hole and abuts against the hole wall of the assembly hole.

[0023] In some embodiments, the sheath assembly has a plurality of the lateral holes arranged along its circumferential direction;

[0024] The conveying device includes a plurality of the connection assemblies, and the lug part of each connection assembly is correspondingly arranged with one of the lateral holes.

[0025] In some embodiments, the sheath assembly further has an avoidance groove communicating with the channel, the avoidance groove is located on opposite sides of the sheath assembly in its radial direction and extends along the extension direction of the sheath assembly; the conveying device further includes:

[0026] An auxiliary fitting is arranged to be movable along the extending direction of the sheath assembly. The auxiliary fitting is provided with a clamping portion, and the clamping portion is arranged opposite to the avoidance groove. The clamping portion is arranged so that when being extruded, it can enter the channel through the avoidance groove to clamp the transmission assembly.

[0027] In some embodiments, the auxiliary fitting includes a main body portion. The main body portion is sleeved on the sheath assembly and can move along the extending direction of the sheath assembly. The clamping portion is connected to the main body portion.

[0028] The main body portion has a relief groove, and the relief groove is arranged corresponding to the avoidance groove.

[0029] At least part of the clamping portion is arranged in the relief groove, and the clamping portion is arranged so that when being extruded, at least part of it can pass through the relief groove and enter the avoidance groove.

[0030] In some embodiments, the clamping portion includes:

[0031] A driving arm having a connecting end and a free end arranged opposite to each other. The connecting end is connected to the main body portion. From the connecting end to the free end, at least part of the driving arm extends along a direction gradually away from the transmission assembly.

[0032] A pressing head is connected to the free end and extends from the free end towards the transmission assembly.

[0033] In some embodiments, the sheath assembly includes a sheath body and a transition cap which are arranged in sequence from its proximal end to its distal end and are connected to each other. The transmission assembly penetrates through the sheath body and the transition cap. The side hole is opened on the transition cap, and at least part of the connecting assembly is located in the transition cap.

[0034] In some embodiments, one end of the transition cap away from the sheath body is the distal end of the sheath assembly. The transition cap is provided with a limiting step, and the side hole is located on one side of the limiting step close to the distal end.

[0035] When the distal end of the sheath assembly is inserted into the clamping seat, the side hole is located in the clamping seat, and the limiting step is opposite to the edge of the clamping seat.

[0036] In some embodiments, the transmission assembly includes a cable and a transmission head which are connected to each other. The cable is arranged to drive the transmission head to move along the channel. The transmission head is arranged to be able to extrude the connecting assembly and can be connected to the fixture.

[0037] In some embodiments, the transmission head includes:

[0038] A conical head, configured to be insertable into the fixture;

[0039] A base, connected to the cable and spaced apart from the conical head;

[0040] A joint portion, connected between the base and the conical head;

[0041] When the conical head is inserted into the fixture, at least a part of the fixture is located between the conical head and the base and fits against the joint portion.

[0042] Correspondingly, a clip device according to an embodiment of the present application includes:

[0043] A conveying device as described in any one of the above embodiments, and,

[0044] A clip assembly, the clip assembly and the conveying device being provided as a split structure;

[0045] A protective shell, the protective shell being used to assemble the clip assembly and the conveying device, the protective shell including a positioning component;

[0046] The clip assembly can be received in the protective shell, and the conveying device can be inserted into the protective shell and cooperate with the positioning component for positioning so as to be connected to the clip assembly.

[0047] In some embodiments, the clip assembly includes a fixture and a clip seat that houses at least a part of the fixture. The fixture is configured to be connected to a transmission component of the conveying device. A limiting groove is provided on the inner circumferential surface of the clip seat, and a connection component of the conveying device can be embedded in the limiting groove to be connected to the clip seat.

[0048] In some embodiments, the fixture includes a clip element and a pull buckle connected to each other. The pull buckle includes at least two holding units arranged around its central axis M. One end of the holding unit away from the clip element has a holding portion;

[0049] The transmission head of the transmission component can be inserted between the at least two holding units, and the holding portion is used to limit the transmission head so that the transmission head is connected to the pull buckle.

[0050] In some embodiments, the internal space of the clip seat has a first section and a second section arranged in sequence along its axis. The first section is located on the side of the second section away from the clip element, and the radial dimension of the first section is greater than the radial dimension of the second section;

[0051] When the holding portion is located in the first section, the holding portions of the at least two holding units can move away from each other under the extrusion force of the transmission head;

[0052] When the holding part is located within the second section, the inner peripheral surface of the clip seat can come into contact with the holding unit to prevent the holding parts of the at least two holding units from moving away from each other.

[0053] In some embodiments, a receiving groove is defined between the at least two holding units, and the driving head can be inserted into the receiving groove; the holding part is disposed at the notch of the receiving groove and protrudes inward in the radial direction.

[0054] In some embodiments, the snap fastener further includes a hinge seat hinged to the clip element, and the holding unit is disposed on a side of the hinge seat away from the clip element;

[0055] The holding unit further includes a first holding arm and a second holding arm respectively connected to the hinge seat. The holding part is disposed on sides of the first holding arm and the second holding arm away from the hinge seat and connects the first holding arm and the second holding arm.

[0056] In some embodiments, when the driving head is inserted between the at least two holding units, the holding part is located between the tapered head and the base of the driving head and fits with the engaging part.

[0057] In some embodiments, the driving head can drive the clip assembly to rotate relative to the connection assembly.

[0058] In some embodiments, the snap fastener is configured as an elastic structure.

[0059] In some embodiments, the clip element includes a first clip and a second clip hinged to the snap fastener. The first clip and the second clip are both provided with sliding grooves; a pin shaft is disposed in the clip seat and passes through the sliding grooves.

[0060] The sliding groove is provided with an open position A, a closed position B, and a locked position C. The transmission assembly drives the clip element to move through the snap fastener so that the pin shaft can reciprocate between the open position A and the closed position B; in the open position A, the first clip and the second clip are opened, and in the closed position B, the first clip and the second clip are closed.

[0061] The locking position C is located on a side of the closing position B away from the opening position A. A first convex portion is provided in the sliding groove of the first clip, and a second convex portion opposite to the first convex portion is provided in the sliding groove of the second clip. The first convex portion and the second convex portion are located between the locking position C and the closing position B. The transmission assembly drives the clip element to move towards the proximal end through the buckle, so that the pin shaft presses the first convex portion and the second convex portion and moves to the locking position C. At the locking position C, the first clip and the second clip are locked.

[0062] In some embodiments, the first clip is provided with a first avoidance notch, and the second clip is provided with a second avoidance notch. When the pin shaft presses the first convex portion and the second convex portion, the first convex portion can be deformed towards the first avoidance notch, and the second convex portion can be deformed towards the second avoidance notch.

[0063] In some embodiments, the protective shell further includes:

[0064] A shell assembly having a receiving groove and an assembly groove inside. The receiving groove is used for placing the clip assembly, and the assembly groove is for the conveying device to be inserted into the receiving groove through it;

[0065] The positioning assembly is connected to the shell assembly and includes a first positioning portion and a second positioning portion arranged oppositely. The first positioning portion and the second positioning portion are arranged between the receiving groove and the assembly groove. The first positioning portion and the second positioning portion are used to cooperate with the sheath assembly in the conveying device to position the sheath assembly when the conveying device is inserted into the receiving groove.

[0066] Correspondingly, an embodiment of the present application further provides an assembling method for the clip device described in any one of the above embodiments. The assembling method includes:

[0067] Insert the conveying device into the protective shell so that the positioning assembly of the protective shell cooperates with the conveying device to position the conveying device;

[0068] Manipulate the handle mechanism of the conveying device to insert the transmission assembly of the conveying device into the clip seat of the clip assembly and connect it to the fixture. The clip assembly is received in the protective shell in a closed state;

[0069] Pull out the conveying device from the protective shell to take out the clip assembly together to complete the assembly.

[0070] Beneficial effects: The conveying device provided by the embodiment of the present application is used to convey a clip assembly, and the clip assembly includes a fixture and a clip seat that houses at least part of the fixture; the conveying device includes: a sheath assembly having a channel and a lateral hole, the channel penetrating through the proximal end and the distal end of the sheath assembly, and the lateral hole communicating with the channel; a connecting assembly disposed in the channel and connected to the sheath assembly; a transmission assembly passing through the channel; the distal end of the sheath assembly can be inserted into the clip seat, and the transmission assembly can move along the channel into the clip seat to be connected to the fixture; when the transmission assembly moves into the clip seat, the transmission assembly can squeeze the connecting assembly so that part of the connecting assembly protrudes out of the sheath assembly from the lateral hole and is connected to the clip seat. In the embodiment of the present application, the sheath assembly has a lateral hole, and a connecting assembly is connected and arranged inside the sheath assembly. When the transmission assembly moves along the channel into the distal clip seat, it can squeeze the connecting assembly. The connecting assembly is squeezed by the transmission assembly, and part of it can protrude out of the sheath assembly from the lateral hole and is connected to the clip seat. That is to say, by controlling the action of the transmission assembly, the conveying device can be smoothly connected to the clip assembly. Therefore, the conveying device and the clip assembly can be set as a split structure, and the conveying device and the clip assembly can be transported and stored separately, reducing space occupation and transportation and storage costs. After releasing the clip assembly, the conveying device can be connected to another clip assembly by the same connection method to achieve repeated use and reduce the use cost.

[0071] The clip device of the embodiment of the present application can have all the technical features and technical effects of the above-mentioned conveying device, which will not be elaborated here. Description of the Drawings

[0072] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0073] Figure 1 It is a schematic structural diagram of the clip assembly and the conveying device in the clip device provided by an embodiment of the present application;

[0074] Figure 2 It is a schematic structural diagram of the clip assembly in an embodiment of the present application;

[0075] Figure 3 For Figure 2 It is a schematic cross-sectional structural diagram of the clip assembly along the E-E line;

[0076] Figure 4 It is a partial schematic structural diagram of the conveying device provided by an embodiment of the present application;

[0077] Figure 5 ForFigure 4 Partial enlarged structural schematic diagram of area A in

[0078] Figure 6 is Figure 5 Cross-sectional structural schematic diagram of the structure in along line A-A;

[0079] Figure 7 Partial cross-sectional structural schematic diagram of the connection component of the conveying device provided in an embodiment of the present application in the extended state;

[0080] Figure 8 Partial structural schematic diagram of the connection state between the conveying device and the clamp seat of the clamp assembly provided in an embodiment of the present application;

[0081] Figure 9 is Figure 8 Cross-sectional structural schematic diagram of the structure in along line C-C when the holding part is in the first section state;

[0082] Figure 10 is Figure 8 Cross-sectional structural schematic diagram of the structure in along line C-C when the holding part is in the second section state;

[0083] Figure 11 Partial structural schematic diagram of the clip device provided in an embodiment of the present application in the open state of the clip assembly;

[0084] Figure 12 is Figure 11 Cross-sectional structural schematic diagram of the structure in along line B-B;

[0085] Figure 13 Structural schematic diagram of the connection component in the conveying device provided in an embodiment of the present application;

[0086] Figure 14 Structural schematic diagram of the connection component in the conveying device provided in another embodiment of the present application;

[0087] Figure 15 Partial structural schematic diagram of the connection component of the conveying device provided in an embodiment of the present application in the extended state;

[0088] Figure 16 is Figure 15 Side view of the structure in ;

[0089] Figure 17 is Figure 16 Cross-sectional structural schematic diagram of the structure in along line D-D;

[0090] Figure 18 Partial structural schematic diagram of the conveying device provided in an embodiment of the present application;

[0091] Figure 19 isFigure 18 Schematic side view of the local structure at the auxiliary fitting in the embodiment;

[0092] Figure 20 Is Figure 19 Schematic diagram of the partial structure of the sheath assembly after removing the auxiliary fitting in the embodiment;

[0093] Figure 21 Schematic cross-sectional view of the partial structure in the connection state of the transmission component and the clip component of the conveying device in an embodiment of the present application;

[0094] Figure 22 Schematic diagram of the structure of the drive head in an embodiment of the present application;

[0095] Figure 23 Schematic diagram of the structure of the clip component in an embodiment of the present application;

[0096] Figure 24 Schematic diagram of the connection structure between the drive head and the buckle in an embodiment of the present application;

[0097] Figure 25 Is Figure 24 Schematic diagram of the connection structure between the drive head and the buckle from another perspective;

[0098] Figure 26 Is Figure 24 Schematic side view of the connection structure between the drive head and the buckle;

[0099] Figure 27 Is along Figure 26 One cross-sectional structure diagram along the F-F line in;

[0100] Figure 28 Is along Figure 26 Another cross-sectional structure diagram along the F-F line in;

[0101] Figure 29 Is along Figure 26 The third cross-sectional structure diagram along the F-F line in;

[0102] Figure 30 Is along Figure 26 The fourth cross-sectional structure diagram along the F-F line in;

[0103] Figure 31 Is along Figure 26 The fifth cross-sectional structure diagram along the F-F line in;

[0104] Figure 32 Schematic diagram of the buckle structure in another embodiment of the present application;

[0105] Figure 33Schematic cross-sectional view of a partial structure in a state where a fixture of a transmission assembly and a clip assembly of a conveying device according to an embodiment of the present application are connected;

[0106] Figure 34 Schematic structural view of a protective case of a clip device according to an embodiment of the present application;

[0107] Figure 35 Schematic exploded view of parts during the assembly process of a clip device according to an embodiment of the present application;

[0108] Description of reference numerals: 100 - conveying device; 110 - sheath assembly; 111 - sheath body; 112 - transition cap; 1121 - side wall; 1122 - limiting step; 1123 - limiting recess; 113 - channel; 114 - lateral hole; 115 - proximal end; 116 - distal end; 117 - assembly hole; 1171 - hole wall; 118 - avoidance groove; 120 - connection assembly; 121 - elastic part; 1211 - fixed end; 1212 - movable end; 122 - tongue part; 123 - bending part; 1221 - shoulder; 130 - transmission assembly; 131 - cable; 132 - transmission head; 1321 - conical head; 1322 - joint part; 1323 - base; 140 - auxiliary fitting; 141 - clamping part; 1411 - driving arm; 1412 - pressing head; 1413 - connection end; 1414 - free end; 142 - main body part; 1421 - relief groove; 150 - handle mechanism; 200 - clip assembly; 210 - fixture; 211 - clip element; 211a - first clip; 211b - second clip; 212 - pull buckle; 2121 - outer peripheral surface; 2122 - receiving groove; 2123 - notch; 213 - holding unit; 2131 - holding part; 2132 - first holding arm; 2133 - second holding arm; 217 - hinge seat; 214 - sliding groove; 215a - first protrusion; 215b - second protrusion; 216a - first avoidance notch; 216b - second avoidance notch; 220 - clip seat; 221 - inner peripheral surface; 222 - limiting groove; 223 - first section; 224 - second section; 225 - pin shaft; 300 - protective case; 310 - case assembly; 311 - receiving groove; 312 - assembly groove; 3121 - guiding surface; 320 - positioning assembly; 321 - first positioning part; 322 - second positioning part. Detailed Description of the Invention

[0109] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present application.

[0110] In the description of the present application, it should be understood that the terms "proximal end" and "distal end" are referenced with respect to the operator (doctor). Among them, the "proximal end" is the end closer to the operator, and the "distal end" is the end farther from the operator relative to the "proximal end", that is, the end closer to the patient. The orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application. The meaning of "a plurality" is two or more, and at least one means it can be one, two, or more, unless otherwise specifically defined. The terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the communication inside two components or the interaction relationship between two components, unless otherwise specifically defined. The terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0111] As an introduction to the present application, a hemostatic clip will be introduced first. It is composed of a clip assembly and a delivery device, and these two parts are an integral whole for single-use. Although this design is simple and convenient, in actual use, since both the clip assembly and the delivery device are for single-use, the cost is relatively high, which is not conducive to the large-scale use of the product. Moreover, since the clip assembly and the delivery device are integrated, during use, if the clip assembly is damaged, the entire hemostatic clip needs to be replaced, which undoubtedly increases the medical cost. Furthermore, since the clip assembly and the delivery device are integrated, a relatively large space is required during transportation and storage, which also increases the transportation and storage costs.

[0112] In addition, for assembled hemostatic clips, there are also quite a few problems with the current solutions. For example, in patent CN100475165C, there are several problems with this solution:

[0113] 1) In the process of assembling the clip assembly in this technology, it is necessary to press the protective shell by hand so as to fix the delivery device to the clip assembly, and then perform the action of pushing the connecting head to complete the assembly. This method is relatively complex to operate, especially in a tense clinical surgical environment, and it is even more difficult to operate, increasing the assembly difficulty;

[0114] 2) The clip in this solution cannot be opened and closed repeatedly (because there is no elastic piece to connect the conveying device and the clip assembly in this solution), which will greatly increase the difficulty and inconvenience of the operation in actual use.

[0115] 3) The clip in this solution cannot be rotated, which will greatly increase the difficulty of the operation and reduce the operation efficiency in actual use.

[0116] 4) When replacing the second clip assembly, since the front end of the connector still has the clip assembly left from the previous time, it needs to be manually removed. Only after removal can the next clip assembly be assembled, which also increases the assembly difficulty and reduces the operation efficiency;

[0117] In addition, as in the patent: CN103989500B, there are several problems with this solution:

[0118] 1) The clip assembly cannot be reloaded repeatedly, which does not conform to the concept of sustainable development under the current background of advocating green environmental protection. Especially when the EU has put forward the PPWR regulations, requiring to reduce packaging waste and promote the recycling and reuse of packaging materials. Therefore, if the solution described in CN103989500B is adopted, after the clip assembly is used up, the remaining conveying device will be discarded soon. This not only does not conform to sustainable development but also increases the burden on patients.

[0119] In view of this, the embodiment of the present application provides a clip device, which can be applied to endoscopic surgery for clamping and closing tissues and wounds. As Figure 1 shown, the clip device mainly includes a conveying device 100 and a clip assembly 200. The conveying device 100 and the clip assembly 200 are of a split structure, and the conveying device 100 is arranged to be able to be connected to the clip assembly 200 so as to be able to convey the clip assembly 200. Specifically, by taking the clip assembly 200 and the conveying device 100 as two independent parts, where the clip assembly 200 is for single use and the conveying device 100 is for repeated use, the product cost can be greatly saved. And it also solves the problem that when the clip assembly 200 is damaged, the whole clip device needs to be replaced. By setting the clip assembly 200 and the conveying device 100 as two independent parts, when the clip assembly 200 is damaged, only the clip assembly 200 needs to be replaced, without the need to replace the whole clip device, and the conveying device 100 can be retained for continued use, thereby reducing the medical cost. Moreover, it also solves the problem that the integration of the clip assembly 200 and the conveying device 100 occupies a large space during transportation and storage. By setting the clip assembly 200 and the conveying device 100 as two independent parts, they can be transported and stored separately, thereby reducing the transportation and storage costs.

[0120] Specifically, Figure 1The state in which the conveying device 100 is connected to the clip assembly 200 is shown. The conveying device 100 and the clip assembly 200 can also be in a separated state from each other and can be stored and transported separately. When in need of use, the conveying device 100 is connected to the clip assembly 200. For example, the clip assembly 200 is received and fixed in a protective shell, and the conveying device 100 is inserted into the protective shell to be connected to the clip assembly 200. After the conveying device 100 is connected to the clip assembly 200, it can be used to convey the clip assembly 200 through the endoscope channel to the patient's body to clamp the wound / tissue to be treated.

[0121] Please first refer to Figure 2 and Figure 3 , the clip assembly 200 includes a clamp 210 and a clip seat 220. At least a part of the clamp 210 is received in the clip seat 220. The clamp 210 includes clip elements 211 for clamping tissue / wound and a pull tab 212 connected to the clip elements 211.

[0122] Please also refer to Figure 4 , Figure 5 and Figure 6 , an embodiment of the present application also provides a conveying device 100 for conveying the clip assembly 200. In an embodiment of the present application, the conveying device 100 mainly includes a sheath assembly 110, a connection assembly 120, and a transmission assembly 130.

[0123] One end of the sheath assembly 110 is its proximal end 115, and the other end is its distal end 116. The sheath assembly 110 is used to convey the clip assembly 200 located at its distal end 116 after assembly through the endoscope channel to the patient's body. The sheath assembly 110 has a channel 113 and a side hole 114. The channel 113 is a cavity formed in the sheath assembly 110, which penetrates the proximal end 115 and the distal end 116 of the sheath assembly 110, making the sheath assembly 110 generally in a tubular structure. Thus, the channel 113 of the sheath assembly 110 can be used to thread the transmission assembly 130, and the sheath assembly 110 can guide and protect the transmission assembly 130 threaded in its channel 113. The side hole 114 is formed on the side wall 1121 of the sheath assembly 110, which can extend substantially along the radial direction of the sheath assembly 110, or can also be extended and arranged according to the required inclination angle. The side hole 114 communicates with the channel 113 and penetrates through the side wall 1121 of the sheath assembly 110.

[0124] The connecting component 120 is disposed within the channel 113 and is connected to the sheath assembly 110, that is, the connecting component 120 is mounted on the sheath assembly 110 and can move within the endoscopic forceps channel following the sheath assembly. The connecting component 120 is used to cooperate and connect with the seat 220 of the clip assembly 200 so as to be able to connect the clip assembly 200 to the distal end 116 of the sheath assembly 110. Specifically, a part of the structure of the connecting component 120 (such as the tongue portion 122) can penetrate out of the lateral hole 114 and protrude outside the sheath assembly 110 to be able to cooperate with the seat 220.

[0125] Please also refer to Figure 6 、 Figure 7 、 Figure 9 and Figure 10 , wherein the distal end 116 of the sheath assembly 110 can be inserted into the seat 220, and the transmission component 130 can move along the channel 113 towards the inside of the seat 220 so that one end of the transmission component 130 is connected to the clamp 210 of the clip assembly 200. When the transmission component 130 moves towards the inside of the seat 220, the transmission component 130 can squeeze the connecting component 120 so that a part of the connecting component 120 protrudes out of the lateral hole 114 to the outside of the sheath assembly 110 and is connected to the seat 220.

[0126] Specifically, please also refer to Figure 6 and Figure 7 , by driving the transmission component 130, it can be made to move along the channel 113 towards the side where the proximal end 115 of the sheath assembly 110 is located or towards the side where the distal end 116 is located. When the transmission component 130 moves towards the side where the distal end 116 is located, its front end can gradually move outside the channel 113 and squeeze the connecting component 120 located in the channel 113 during this process. As Figure 7 shown, the connecting component 120 is subjected to a radially squeezing force, and its tongue portion 122 can move radially outwards and penetrate out through the lateral hole 114, so as to be able to protrude outside the sheath assembly 110. Please also refer to Figure 8 and Figure 9, when assembling the conveying device 100 and the clip assembly 200, the distal end 116 of the sheath assembly 110 can be inserted into the clip seat 220. The transmission assembly 130 moves towards the side where the distal end 116 is located, squeezing the connection assembly 120 so that its tongue portion 122 protrudes from the lateral hole 114 to the outside of the sheath assembly 110 and is connected to the clip seat 220 in cooperation. Optionally, as the distal end 116 of the sheath assembly 110 is inserted into the clip seat 220, the lateral hole 114 also enters the inner cavity of the clip seat 220, and the tongue portion 122 can be embedded into the limiting groove 222 provided on the inner peripheral surface 221 of the clip seat 220 to achieve the connection in cooperation with the clip seat 220; or can be engaged with the limiting boss provided on the clip seat 220; or can be inserted into the limiting hole opened on the clip seat 220 to achieve the connection in cooperation with the clip seat 220. Please refer to Figure 9 and Figure 10 , as the transmission assembly 130 moves towards the side where the distal end 116 is located, its front end gradually moves into the clip seat 220, and it can be connected to the clamp 210 of the clip assembly 200. Furthermore, it can drive the clamp 210 to open and close to complete the operations required for the surgery.

[0127] It can be understood that in the embodiment of the present application, when the transmission assembly 130 moves along the channel 113 into the clip seat 220 at the distal end 116, the connection assembly 120 is squeezed. The connection assembly 120 is squeezed by the transmission assembly 130, and a part of its structure can protrude from the lateral hole 114 to the outside of the sheath assembly 110 and is connected to the clip seat 220. That is to say, when connecting the conveying device 100 and the clip assembly 200, by controlling the transmission assembly 130 to move towards the distal end 116, the conveying device 100 can be smoothly connected to the clip assembly 200. Therefore, the conveying device 100 and the clip assembly 200 can be set as a split structure and connected together when needed. The conveying device 100 and the clip assembly 200 can be transported and stored separately, reducing the space occupation and the transportation and storage costs. After releasing the clip assembly 200, the conveying device 100 can be connected to another clip assembly 200 by the same connection method to realize the reuse of the conveying device 100 and reduce the use cost.

[0128] Please refer to in sequence Figure 12 、 Figure 10 and Figure 9 , in some embodiments, the transmission assembly 130 can also move along the channel 113 towards the proximal end 115 of the sheath assembly 110 to separate from the clamp 210. Specifically, please combine Figure 12 、 Figure 11 、 Figure 10 、 Figure 9 and Figure 8, during the process that the transmission assembly 130 moves along the channel 113 towards the proximal end 115 of the sheath assembly 110, it can drive the clamp 210 from the open state to the closed state to clamp the tissue / wound. Then, as the transmission assembly 130 continues to move towards the proximal end 115, it gradually separates from the clamp 210 and gradually disengages from the inner cavity of the clip seat 220, and retracts from the distal end 116 into the channel 113. When the transmission assembly 130 moves towards the proximal end 115 of the sheath assembly 110, the extrusion force on the connection assembly 120 gradually decreases, causing the connection assembly 120 to gradually retract into the sheath assembly 110 to separate from the clip seat 220, completing the release of the clip assembly 200. Specifically, please refer to Figure 7 and Figure 6 . During the process that the transmission assembly 130 moves towards the proximal end 115, the extrusion force on the connection assembly 120 gradually decreases, enabling the tongue portion 122 of the connection assembly 120 to move towards the side where the channel 113 is located via the side hole 114, that is, gradually approaching the central axis O, gradually retracting into the side hole 114 or even retracting into the channel 113, thereby achieving separation from the clip seat 220. This can release the connected clip assembly 200, enabling the delivery device 100 to be reused and connected to another clip assembly 200 to deliver another clip assembly 200.

[0129] As Figure 1 shown, in some embodiments, the delivery device 100 further includes a handle mechanism 150. The handle mechanism 150 is connected to the proximal end 115 of the sheath assembly 110 and is connected to the transmission assembly 130. By manipulating the handle mechanism 150, the transmission assembly 130 can be driven to move towards the side where the proximal end 115 is located or towards the side where the distal end 116 is located. Thus, by manipulating the handle mechanism 150, the connection between the delivery device 100 and the clip assembly 200 can be achieved, and the clip assembly 200 can be conveyed along the endoscopic channel into the patient's body, further realizing actions such as opening, closing, locking, and releasing of the clip assembly 200.

[0130] Please refer to again Figure 4 , Figure 5 and Figure 6, in some embodiments, the sheath assembly 110 includes a sheath body 111 and a transition cap 112 that are arranged in sequence from its proximal end 115 to the distal end 116 and are connected to each other. Among them, the sheath body 111 can be a spring tube, that is, a pipe structure formed by helically winding metal wires. One end of it is connected to the handle mechanism 150, and the end connected to the handle mechanism 150 corresponds to the proximal end 115, and the other end of it is connected to the transition cap 112. The transition cap 112 can be made of materials such as metal or medical plastic, and the end thereof far from the sheath body 111 corresponds to the distal end 116. The channel 113 penetrates through the sheath body 111 and the transition cap 112 from the proximal end 115 to the distal end 116, that is, the channel 113 has at least two parts, one part is the internal space of the sheath body 111, and the other part is the internal space of the transition cap 112, and the two are connected to each other to form the channel 113. The transmission assembly 130 penetrates through the sheath body 111 and the transition cap 112. In this embodiment, the side hole 114 is opened on the transition cap 112, and at least part of the connecting assembly 120 is located inside the transition cap 112. By opening the side hole 114 on the transition cap 112, it is closer to the distal end 116, so that when the distal end 116 is inserted into the collet 220, the connecting assembly 120 passing through the side hole 114 can be more easily connected to the collet 220. And the transition cap 112 is generally more rigid than the sheath body 111. Opening the side hole 114 on the transition cap 112 is easier than opening it on the sheath body 111, which can significantly reduce the processing difficulty.

[0131] Optionally, please also combine Figure 6 and Figure 9 , the end of the transition cap 112 far from the sheath body 111 is the distal end 116 of the sheath assembly 110. The transition cap 112 is provided with a limiting step 1122, and the side hole 114 is located on the side of the limiting step 1122 close to the distal end 116. When the distal end 116 of the sheath assembly 110 is inserted into the collet 220, the side hole 114 is located inside the collet 220, and the limiting step 1122 is opposite to the edge of the collet 220. Among them, the edge of the collet 220 is Figure 9 the end face of the collet 220 close to the transition cap 112 side in Figure 9 . By setting the limiting step 1122, the cooperation between the limiting step 1122 and the edge of the collet 220 can be used to limit the distance that the distal end 116 of the transition cap 112 is inserted into the inner cavity of the collet 220, and further the side hole 114 can be aligned and positioned with the adapted assembly structure provided in the collet 220. For example

[0132] Please refer toFigure 6 , in some embodiments, the transmission assembly 130 includes a cable 131 and a transmission head 132 connected to each other. The cable 131 is arranged to drive the transmission head 132 to move along the channel 113. The transmission head 132 is arranged to be able to squeeze the connection assembly 120 and be able to connect to the clamp 210. One end of the cable 131 can be connected to the handle mechanism 150. The cable 131 is driven to move through the handle mechanism 150. The transmission head 132 is connected to the other end of the cable 131, and structures for connecting to the clamp 210 and structures for squeezing the connection assembly 120 are arranged thereon. Optionally, a protruding portion protruding (with a larger radial dimension) towards the side wall 1121 of the sheath assembly 110 is arranged on the peripheral wall of the transmission head 132. This protruding portion is used to squeeze the connection assembly 120. When the cable 131 moves towards the distal end 116, the transmission head 132 is pushed to move towards the distal end 116 together. The protruding portion on its peripheral wall contacts the connection assembly 120 and squeezes the connection assembly 120 as it moves, causing a part of its structure to protrude outwards from the side hole 114. Optionally, a connection structure similar to a bullet head is arranged at the front end of the transmission head 132. Through this connection structure, it is embedded into the receiving groove 2122 arranged at the tail of the buckle 212 of the clamp 210 to achieve mutual clamping connection.

[0133] Optionally, please refer to Figure 21 and Figure 22 , in some embodiments, the transmission head 132 includes a tapered head 1321, a coupling portion 1322, and a base portion 1323. The tapered head 1321 is generally in a tapered structure and can be inserted into the buckle 212 of the clamp 210 to connect to the clamp 210. The base portion 1323 is connected to the cable 131 and is spaced apart from the tapered head 1321. The coupling portion 1322 is arranged between the base portion 1323 and the tapered head 1321. The base portion 1323 is connected to the tapered head 1321 through the coupling portion 1322. The cross-section of the coupling portion 1322 perpendicular to the axis of the transmission assembly 130 is non-circular. In some embodiments, the cross-section of the coupling portion 1322 perpendicular to the axis of the transmission assembly 130 can also be circular. When the tapered head 1321 is inserted into the clamp 210, at least a part of the clamp 210 is located between the tapered head 1321 and the base portion 1323 and fits with the coupling portion 1322. Since the coupling portion 1322 is non-circular and at least a part of the clamp 210 fits on the coupling portion 1322, the transmission assembly 130 can transmit torque to the clamp 210, and thus can drive the clamp 210 to rotate, improving the convenience and flexibility of operation. The non-circular shape can specifically be a polygon, such as a square, a triangle, a hexagon, etc., or can also be a D shape, an oval shape, a star shape, a multi-tooth shape, etc., as long as it can cooperate with the clamp 210 to transmit torque. For example, Figure 27 as shown, the cross-section of the coupling portion 1322 is rectangular; Figure 28 as shown, the cross-section of the coupling portion 1322 is pentagonal;Figure 29 As shown, the cross-section of the joint portion 1322 is triangular; Figure 30 As shown, the cross-section of the joint portion 1322 is in a "+" shape; Figure 31 As shown, the cross-section of the joint portion 1322 is in a gear shape.

[0134] Please refer to Figure 6 、 Figure 13 and Figure 14 Together. In some embodiments, the connecting component 120 includes an elastic portion 121 and a tongue portion 122. The elastic portion 121 has a fixed end 1211 and a movable end 1212 which are oppositely arranged. The fixed end 1211 is fixed to the sheath component 110, and the tongue portion 122 is connected to the movable end 1212 and extends from the movable end 1212 towards the side hole 114. Wherein, the fixed end 1211 is the end where the elastic portion 121 is fixedly connected to the sheath component 110, and the movable end 1212 is the end that can move when the elastic portion 121 is squeezed by the driving head 132 of the driving component 130. When the elastic portion 121 is not squeezed, the movable end 1212 is closest to the central axis O. When the elastic portion 121 is squeezed, the movable end 1212 drives the tongue portion 122 to protrude out of the side hole 114 along the radial direction away from the central axis O. When the elastic portion 121 is not squeezed, the tongue portion 122 can be completely located within the channel 113, or partially located within the side hole 114, or slightly protrude out of the side hole 114. In this embodiment, when the driving component 130 moves towards the inside of the clip holder 220, the driving component 130 can squeeze the elastic portion 121 to cause elastic deformation thereof, so that the movable end 1212 moves away from the central axis O along the radial direction, driving the tongue portion 122 to protrude out of the sheath component 110 from the side hole 114 and connect with the clip holder 220. When the driving component 130 moves towards the side where the proximal end 115 is located, the squeezing force on the elastic portion 121 gradually decreases, and the elastic deformation of the elastic portion 121 gradually recovers, causing the movable end 1212 to gradually approach the central axis O, and then driving the tongue portion 122 to retract towards the side hole 114, thereby separating from the clip holder 220. In this way, only by driving the driving component 130 can the connection and separation of the conveying device 100 and the clip assembly 200 be realized, which is more convenient for doctors to operate.

[0135] Optionally, the elastic portion 121 can be an elastic leaf spring structure and can be made of a medical metal material or other medical elastic materials. And the elastic portion 121 and the tongue portion 122 can be an integral structure, that is, the two are integrally processed and formed.

[0136] Optionally, as Figure 6 and Figure 13As shown, the elastic part 121 extends in a bent shape from the fixed end 1211 to the movable end 1212. Specifically, from the fixed end 1211 to the movable end 1212, the elastic part 121 extends in a bent shape with a tendency to approximate the central axis O of the sheath assembly 110.

[0137] Optionally, the distance between the fixed end 1211 and the central axis O is greater than the distance between the movable end 1212 and the central axis O.

[0138] Optionally, as Figure 14 shown, the elastic part 121 extends in a straight line from the fixed end 1211 to the movable end 1212.

[0139] Please refer to Figure 6 again. In some embodiments, the sheath assembly 110 further has an assembly hole 117 communicating with the channel 113, and the assembly hole 117 can be opened on the transition cap 112. The connection assembly 120 further includes a bent part 123, the bent part 123 is connected to the fixed end 1211, the bent part 123 is disposed in the assembly hole 117, and abuts against the hole wall 1171 of the assembly hole 117. By providing the bent part 123 at the fixed end 1211 and using the bent part 123 to abut against the hole wall 1171 of the assembly hole 117, the assembly of the connection assembly 120 and the sheath assembly 110 is made simpler and the structure is more stable. Among them, the bent part 123 can be a U-shaped structure formed by bending, and its own elasticity can hold the hole wall 1171 of the assembly hole 117 more stably, improving the stability of the assembly. Optionally, the elastic part 121, the tongue part 122 and the bent part 123 can be an integral structure, that is, the three are integrally processed and formed.

[0140] Please refer to Figure 13 、 Figure 15 、 Figure 16 and Figure 17 together. In some embodiments, the tongue part 122 has a shoulder 1221, and the shoulder 1221 is located inside the sheath assembly 110, that is, inside the channel 113. The shoulder 1221 can contact the side wall 1121 of the sheath assembly 110 to limit the tongue part 122. It can be understood that as Figure 16 shown and Figure 17 shown, the shoulder 1221 can limit the size L of the tongue part 122 protruding from the side hole 114 to the outside of the sheath assembly 110. Specifically, the shoulder 1221 is a protruding structure provided on the circumferential side of the tongue part 122, and it is located in the channel 113. When the elastic part 121 is squeezed to generate elastic deformation, the tongue part 122 protrudes outwards from the side hole 114, and the shoulder 1221 thereon can abut against the side wall 1121 of the sheath assembly 110, thereby limiting the protruding size L of the tongue part 122. Please refer to Figure 9, the size of the protruding tongue portion 122 is restricted by the shoulder 1221, thereby restricting the depth of insertion of the tongue portion 122 into the limiting groove 222, reducing the friction with the clip seat 220, and improving the rotational freedom of the clip assembly 200.

[0141] Please refer to again Figure 13 , shoulders 1221 are provided on both opposite sides of the tongue portion 122, and the shoulders 1221 can respectively abut against both opposite sides of the lateral hole 114, improving the stability of the limit. Optionally, the shoulder 1221 can also be set as a flange structure that circumferentially surrounds the tongue portion 122.

[0142] In some embodiments, the sheath assembly 110 has a plurality of lateral holes 114 arranged along its circumference, the conveying device 100 includes a plurality of connecting components 120, and each connecting component 120 is correspondingly arranged with a lateral hole 114. When the transmission component 130 moves towards the inside of the clip seat 220, the elastic portion 121 of each connecting component 120 is squeezed by the transmission component 130 and undergoes elastic deformation. By arranging a plurality of lateral holes 114 along the circumference of the sheath assembly 110, a plurality of connecting components 120 can be respectively passed through the corresponding lateral holes 114 to be connected with the clip seat 220, improving the connection stability between the conveying device 100 and the clip assembly 200. Moreover, each connecting component 120 corresponds to a lateral hole 114 in position, that is, a plurality of connecting components 120 are also arranged along the circumference of the sheath assembly 110. In this way, when the transmission component 130 moves, it can simultaneously apply a squeezing force to the elastic portions 121 of the plurality of connecting components 120 arranged in the circumference, making the interaction force between the elastic portion 121 and the transmission component 130 more balanced axially, maintaining the moving path of the transmission component 130, reducing its deviation, and thus improving the connection accuracy between the transmission component 130 and the fixture 210.

[0143] It can be understood that the number of the connecting components 120 and the lateral holes 114 is the same. Optionally, this number can be 1, 2, 3, 4 or even more, and can be specifically set according to needs. Optionally, a plurality of connecting components 120 and a plurality of lateral holes 114 can be respectively arranged evenly along the circumference of the sheath assembly 110.

[0144] Combined with the above embodiments, a plurality of assembly holes 117 can be provided on the sheath assembly 110, the plurality of assembly holes 117 are arranged along the circumference of the sheath assembly 110, and the bending portion 123 of each connecting component 120 is installed in an assembly hole 117.

[0145] Please refer to Figure 18 , Figure 19 and Figure 20, in some embodiments, the sheath assembly 110 further has an avoidance groove 118 communicating with the channel 113. The avoidance groove 118 is located on opposite sides of the sheath assembly 110 in its radial direction and extends along the extension direction of the sheath assembly 110. Optionally, the avoidance groove 118 is formed on opposite sides of the sheath body 111. In this embodiment, the conveying device 100 further includes an auxiliary fitting 140, which is arranged to be movable along the extension direction of the sheath assembly 110. The auxiliary fitting 140 is provided with a clamping portion 141, and the clamping portion 141 is arranged opposite to the avoidance groove 118. It can be understood that the clamping portion 141 includes two relatively arranged parts, and each part corresponds to an avoidance groove 118. The clamping portion 141 is arranged to be able to enter the channel 113 through the avoidance groove 118 under extrusion to clamp the transmission assembly 130.

[0146] It can be understood that after the clamping seat 220 is fixed to the transition cap 112 of the sheath assembly 110, it is necessary to push the slider on the handle mechanism 150 to move the transmission assembly 130 towards the distal end 116, so as to squeeze the connection assembly 120 and connect the conveying device 100 and the clamping seat 220 together. However, during the process of pushing the slider, because the sheath assembly 110 and the transmission assembly 130 are relatively long and the slider is far from the distal end 116, it is inconvenient to operate. By providing the auxiliary fitting 140, the transmission assembly 130 can be clamped through its clamping portion 141 passing through the avoidance groove 118, and the effect of moving the transmission assembly 130 can be achieved by moving the auxiliary fitting 140, greatly reducing the assembly difficulty and improving the assembly convenience.

[0147] Specifically, please refer to Figure 19 , the auxiliary fitting 140 includes a main body portion 142. The main body portion 142 is sleeved on the sheath assembly 110 and can move along the extension direction of the sheath assembly 110. The clamping portion 141 is connected to the main body portion 142. By providing the main body portion 142 sleeved on the sheath assembly 110, the sheath assembly 110 can be used to guide the main body portion 142, so that when the auxiliary fitting 140 is moved, the pushing direction of the auxiliary fitting 140 on the transmission assembly 130 is more accurate, and it is easier to complete the assembly of the conveying device 100 and the clip assembly 200.

[0148] Optionally, as Figure 19, the main body part 142 has a relief groove 1421, and the relief groove 1421 is correspondingly arranged with the avoidance groove 118; at least part of the clamping part 141 is arranged in the relief groove 1421, and the clamping part 141 is arranged such that at least part of it can pass through the relief groove 1421 and enter the avoidance groove 118 under extrusion. By arranging at least part of the clamping part 141 in the relief groove 1421, part of the structure of the main body part 142 is at the front end of the clamping part 141 and the other part is at the rear end of the clamping part 141, so that the sheath assembly 110 can be sleeved on both the front and rear sides of the clamping part 141, improving the stability of its movement. And during processing, the clamping part 141 can be directly stamped out on the main body part 142 to form the relief groove 1421.

[0149] In some embodiments, such as Figure 19 , the clamping part 141 includes a driving arm 1411 and a pressing head 1412. The driving arm 1411 has a connecting end 1413 and a free end 1414 which are oppositely arranged, and the connecting end 1413 is connected to the main body part 142; from the connecting end 1413 to the free end 1414, at least part of the driving arm 1411 extends along a direction gradually away from the transmission assembly 130; the pressing head 1412 is connected to the free end 1414 and extends from the free end 1414 towards the transmission assembly 130. By pressing the driving arm 1411, the pressing head 1412 can be pressed against the transmission assembly 130 to clamp the transmission assembly 130.

[0150] Correspondingly, the clip device provided by the embodiments of the present application includes a conveying device 100 and a clip assembly 200, and the conveying device 100 is used to convey the clip assembly 200. This clip device can have all the technical features and technical effects of the conveying device 100 in the above embodiments, and will not be repeated here.

[0151] It should be noted that in the clip device of the embodiments of the present application, the clip assembly 200 and the conveying device 100 are arranged as a split structure and are connected together for use when needed.

[0152] In order to assemble the clip assembly 200 and the conveying device 100, this clip device further includes a Figure 34 shown protective shell 300. The protective shell 300 is used to assemble the clip assembly 200 and the conveying device 100, and the protective shell 300 includes a positioning assembly 320; the clip assembly 200 can be received in the protective shell 300, and the conveying device 100 can be inserted into the protective shell 300 and cooperate with the positioning assembly 320 for positioning so as to be able to connect with the clip assembly 200.

[0153] In some embodiments, please refer to Figure 34 and Figure 35, the protective case 300 further includes: a case assembly 310, the interior of the case assembly 310 has a receiving groove 311 and an assembly groove 312, the receiving groove 311 is used to place the clip assembly 200, and the assembly groove 312 is used for the conveying device 100 to be inserted into the receiving groove 311 through it; a positioning assembly 320 is connected to the case assembly 310 and includes a first positioning portion 321 and a second positioning portion 322 arranged opposite to each other. The first positioning portion 321 and the second positioning portion 322 are disposed between the receiving groove 311 and the assembly groove 312. The first positioning portion 321 and the second positioning portion 322 are used to cooperate with the sheath assembly 110 in the conveying device 100 to position the sheath assembly 110 when the conveying device 100 is inserted into the receiving groove 311.

[0154] In some embodiments, the groove wall of the assembly groove 312 near the opening of the case assembly 310 is provided as a guiding surface 3121, and the guiding surface 3121 is generally conical, which can accurately guide the conveying device 100 to accurately insert the conveying device 100 into the interior of the protective case 300.

[0155] In some embodiments, the transition cap 112 of the sheath assembly 110 is provided with a matching structure, and the first positioning portion 321 and the second positioning portion 322 cooperate through the matching structure to realize the positioning of the sheath assembly 110. Optionally, the matching structure can be a limiting recess 1123 provided on the transition cap 112.

[0156] Please refer to Figure 2 and Figure 3 , the clip assembly 200 includes a clamp 210 and a clip seat 220 that houses at least part of the clamp 210. The clamp 210 is arranged to be connectable to the transmission assembly 130. A limiting groove 222 is provided on the inner peripheral surface 221 of the clip seat 220, and the connecting assembly 120 can be embedded in the limiting groove 222 to connect with the clip seat 220. By providing a shoulder 1221 on the lug portion 122 of the connecting assembly 120 and using the shoulder 1221 to control the depth of the lug portion 122 protruding from the side hole 114, the contact area between the lug portion 122 and the groove wall of the limiting groove 222 can be reduced, the friction force can be lowered, and the clip assembly 200 can rotate more flexibly.

[0157] Please refer to again Figure 2 and Figure 3 , in some embodiments, the clamp 210 includes a clip element 211 and a pull tab 212 connected to each other. Please combine Figure 32 , the pull tab 212 includes at least two holding units 213 arranged around its central axis M. One end of the holding unit 213 away from the clip element 211 has a holding portion 2131. As Figure 9As shown, the driving head 132 of the driving assembly 130 can be inserted between at least two holding portions 2131 of at least two holding units 213. The holding portions 2131 are used to limit the driving head 132 so that the driving head 132 is connected to the buckle 212.

[0158] Optionally, in Figure 32 the embodiment shown, the buckle 212 includes a hinge seat 217 and three holding units 213 connected to one end of the hinge seat 217. The hinge seat 217 is hinged to the clip element 211, and each holding unit 213 has a holding portion 2131. The three holding units 213 are arranged at intervals around the central axis M, and an accommodation groove 2122 is formed between the three holding units 213. The tapered head 1321 of the driving head 132 can be inserted into the accommodation groove 2122. The holding portion 2131 is provided at the notch 2123 of the accommodation groove 2122, and the three holding portions 2131 all protrude inward along the radial direction of the buckle 212. Please refer to Figure 9 , when the tapered head 1321 is inserted into the accommodation groove 2122, the holding portion 2131 can be stuck on one side of the tapered head 1321 close to the base 1323 to limit the tapered head 1321.

[0159] Optionally, in Figures 21 to 27 the embodiment shown, the buckle 212 includes a hinge seat 217 and two holding units 213 connected to one end of the hinge seat 217. The hinge seat 217 is hinged to the clip element 211. The two holding units 213 are respectively arranged on both sides of the central axis M and are spaced from each other. The holding unit 213 further includes a first holding arm 2132 and a second holding arm 2133 respectively connected to the hinge seat 217. The holding portion 2131 is provided on the sides of the first holding arm 2132 and the second holding arm 2133 away from the hinge seat 217 and connects the first holding arm 2132 and the second holding arm 2133. The hinge seat 217 includes two thin sheet-like structures, and pin holes are provided on the two thin sheet-like structures. The two thin sheet-like structures are hinged to the clip element 211 through the pin holes. One of the thin sheet-like structures connects the first holding arms 2132 of the two holding units 213, and the other thin sheet-like structure connects the second holding arms 2133 of the two holding units 213.

[0160] As Figure 26 and Figure 27, when the drive head 132 is inserted between at least two holding units 213, the holding portion 2131 is located between the tapered head 1321 and the base 1323 of the drive head 132 and fits against the engaging portion 1322. The cross-section of the engaging portion 1322 perpendicular to the axial direction of the drive head 132 is non-circular. In some embodiments, the cross-section of the engaging portion 1322 perpendicular to the axial direction of the drive assembly 130 may also be circular. This enables the drive assembly 130 to transmit torque to the fixture 210, thereby driving the clip assembly 200 to rotate. Specifically, the clip assembly 200 is driven to rotate relative to the connection assembly 120 by the drive head 132, improving the convenience and flexibility of the operation. Moreover, the rotation flexibility is further enhanced by the engaging shoulder 1221 controlling the depth of the tongue portion 122 protruding from the side hole 114. Specifically, a gap for accommodating the engaging portion 1322 is formed between the holding portions 2131 of the plurality of holding units 213. The shape of this gap is generally also non-circular, or it can be circular and achieve torque transmission through interference fit, which can be specifically selected according to actual use. Among them, the non-circular shape can specifically be a polygon, such as a square, a triangle, a hexagon, etc., or it can also be a D shape, an oval shape, a star shape, a multi-tooth shape, etc., as long as it can cooperate with the fixture 210 to transmit torque. For example, Figure 27 as shown, the cross-section of the engaging portion 1322 is rectangular; Figure 28 as shown, the cross-section of the engaging portion 1322 is pentagonal; Figure 29 as shown, the cross-section of the engaging portion 1322 is triangular; Figure 30 as shown, the cross-section of the engaging portion 1322 is a "+" shape; Figure 31 as shown, the cross-section of the engaging portion 1322 is gear-shaped.

[0161] Please refer to again Figure 3 , the internal space of the clip seat 220 has a first section 223 and a second section 224 arranged in sequence along its axial direction. The first section 223 is located on the side of the second section 224 away from the clip element 211, and the radial dimension R of the first section 223 is greater than the radial dimension r of the second section 224. Among them, the "radial dimension" refers to the dimension of the inner contour of the structure in the direction perpendicular to the central axis of the clip assembly 200; this radial dimension does not depend on the cross-sectional shape of the clip assembly 200 (such as circular, polygonal or irregular), and only takes the central axis as the direction reference. For example, if the internal space is cylindrical, the radial dimension is the length in the diameter direction; if the internal space is polygonal, the radial dimension is twice the perpendicular distance from the central axis to any side wall.

[0162] Please combine with Figure 9 , Figure 21 and Figure 33 , when the holding portion 2131 is located in the first section 223, the holding portions 2131 of at least two holding units 213 can move away from each other under the extrusion force of the drive head 132. When the clip assembly 200 is atFigure 9 and Figure 33 When it is fixed in the protective shell 300 in the closed state as shown, the holding part 2131 is located in the first section 223. When the transmission assembly 130 moves towards the distal end 116 of the sheath assembly 110, it can squeeze the holding part 2131, causing the holding unit 213 to undergo elastic deformation, and the holding parts 2131 move away from each other. Therefore, the conical head 1321 of the transmission head 132 can be stuck between the holding units 213 to achieve connection with the buckle 212. When the clip element 211 is locked, the holding part 2131 is also located in the first section 223. When the transmission assembly 130 moves towards the proximal end 115 of the sheath assembly 110, it can squeeze the holding part 2131, causing the holding unit 213 to undergo elastic deformation, and the holding parts 2131 move away from each other. Therefore, the conical head 1321 of the transmission head 132 can be disengaged from the buckle 212 to release the clip assembly 200. Moreover, the conical head 1321 is set as a conical structure. When the transmission head 132 is inserted into the buckle 212, the conical surface of the conical head 1321 contacts the buckle 212 first, which can play a guiding role. Therefore, the force required to insert the buckle 212 is very small and it is relatively easy to insert into the buckle 212; when pulling out the transmission head 132 from the buckle 212, there is no conical surface guiding, so the pulling-out force value is larger, which can ensure that the clip element 211 enters the locked state.

[0163] In Figure 33 In the illustrated embodiment, the transition cap 112 is further provided with a limiting recess 1123. When the conveying device 100 is inserted into the protective shell 300, it can be positioned by the cooperation between the limiting recess 1123 of the transition cap 112 and the structure inside the protective shell 300.

[0164] Please refer to Figure 10 , when the holding part 2131 is located in the second section 224, the inner peripheral surface 221 of the clip seat 220 can contact the outer peripheral surface 2121 of the holding unit 213 to prevent the holding parts 2131 of at least two holding units 213 from moving away from each other. In this state, the buckle 212 is restricted by the inner peripheral surface 221 of the clip seat 220 and it is difficult to generate sufficient deformation. Therefore, the conical head 1321 of the transmission head 132 is not easily disengaged from the buckle 212, and thus it is very difficult for the transmission head 132 to prematurely disengage from the buckle 212. Thereby, it can effectively solve the pain points in clinical practice - the clip element 211 cannot be clipped or is clipped and broken, improve the reliability of clamping, ensure that the clip element 211 can clamp a larger wound surface, and guarantee the stability of the surgical operation. When releasing the clip assembly 200, it is also in the state as Figure 9 shown. The holding part 2131 of the buckle 212 is located in the first section 223. This part is not restricted by the inner peripheral surface 221 and is more likely to generate an outward expansion deformation, that is, move away from each other. In this state, the connection force between the transmission head 132 and the buckle 212 is smaller and it is easier to release.

[0165] Wherein, the snap 212 is arranged as an elastic structure, so that it can undergo elastic deformation during the process of the conical head 1321 being inserted into the snap 212, and can limit the conical head 1321 within the snap 212.

[0166] As Figure 2 shown, the clip elements 211 of the clip assembly 200 include a first clip 211a and a second clip 211b hinged to the snap 212, and both the first clip 211a and the second clip 211b are provided with sliding grooves 214. As Figure 33 shown, a pin shaft 225 is arranged in the clip seat 220, and the pin shaft 225 passes through the sliding grooves 214. The sliding grooves 214 are provided with an open position A, a closed position B, and a locking position C. When the pin shaft 225 is located at the open position A, the first clip 211a and the second clip 211b are opened, that is, the clip element 211 is in an open state; when the pin shaft 225 is located at the closed position B, the first clip 211a and the second clip 211b are closed, that is, the clip element 211 is in a closed state; when the pin shaft 225 is located at the locking position C, the first clip 211a and the second clip 211b are locked.

[0167] Specifically, the transmission assembly 130 drives the clip element 211 to move through the snap 212, so that the pin shaft 225 can reciprocate between the open position A and the closed position B. The locking position C is located on the side of the closed position B away from the open position A. A first convex portion 215a is arranged in the sliding groove 214 of the first clip 211a, and a second convex portion 215b opposite to the first convex portion 215a is arranged in the sliding groove 214 of the second clip 211b. The first convex portion 215a and the second convex portion 215b are located between the locking position C and the closed position B. The transmission assembly 130 drives the clip element 211 to move towards the proximal end 115 through the snap 212, so that the pin shaft 225 presses the first convex portion 215a and the second convex portion 215b and moves to the locking position C.

[0168] In some embodiments, the first clip 211a is provided with a first avoidance notch 216a, and the second clip 211b is provided with a second avoidance notch 216b. When the pin shaft 225 presses the first convex portion 215a and the second convex portion 215b, the first convex portion 215a can deform towards the first avoidance notch 216a, and the second convex portion 215b can deform towards the second avoidance notch 216b. Thus, it is easier for the pin shaft 225 to be inserted into the locking position C. When the pin shaft 225 is inserted into the locking position C, the holding portion 2131 of the snap 212 moves to the first section 223. The force required for the pin shaft 225 to pass through the first convex portion 215a and the second convex portion 215b and be inserted into the locking position C is less than the force required for the transmission head 132 to disengage from the snap 212.

[0169] The embodiment of the present application also provides an assembly method, which is used for the clip device in any of the above embodiments. The assembly method includes:

[0170] Insert the conveying device 100 into the protective housing 300 so that the positioning component 320 of the protective housing 300 cooperates with the conveying device 100 to position the conveying device 100;

[0171] Manipulate the handle mechanism 150 of the conveying device 100 to insert the transmission component 130 of the conveying device 100 into the seat 220 of the clip component 200 and connect it to the fixture 210. The clip component 200 is received in the protective housing 300 in a closed state;

[0172] By pulling out the conveying device 100 from the protective housing 300, the clip component 200 is taken out together to complete the assembly. Among them, the clip component 200 is received in the protective housing 300 in a closed state to facilitate the connection between the buckle 212 and the transmission head 132. Specifically, during the process of inserting the sheath component 110 and the transmission component 130 of the conveying device 100 into the protective housing 300 together, the transition cap 112 of the sheath component 110 presses the first positioning portion 321 and the second positioning portion 322, causing them to elastically deform and move away from each other. When the distal end 116 of the transition cap 112 is inserted into the receiving groove 311, the first positioning portion 321 and the second positioning portion 322 clamp the transition cap 112 under the action of the elastic restoring force to position it. Optionally, a limiting recess 1123 is provided on the transition cap 112, and the first positioning portion 321 and the second positioning portion 322 are snapped into the limiting recess 1123 to position it.

[0173] In the above embodiments, the descriptions of the various embodiments have their own emphases. For parts not detailed in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0174] The above has introduced in detail the conveying device 100, the clip device and the assembly method provided by the embodiments of the present application, and specific examples are used to illustrate the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the technical solution and its core idea of the present application; those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A conveying device, characterized in that, For conveying a clip assembly, the clip assembly including a fixture and a clip seat housing at least part of the fixture; the conveying device includes: A sheath assembly having a channel and a lateral hole, the channel penetrating through the proximal end and the distal end of the sheath assembly, and the lateral hole communicating with the channel; A connection assembly disposed within the channel and connected to the sheath assembly; A transmission assembly passing through the channel; The distal end of the sheath assembly can be inserted into the clip seat, and the transmission assembly can move along the channel into the clip seat to connect with the fixture; When the transmission assembly moves into the clip seat, the transmission assembly can squeeze the connection assembly so that a part of the connection assembly protrudes out of the sheath assembly from the lateral hole and connects with the clip seat.

2. The conveying device according to claim 1, wherein The transmission assembly can also move along the channel towards the proximal end of the sheath assembly to separate from the fixture; When the transmission assembly moves towards the proximal end of the sheath assembly, the connection assembly can be separated from the clip seat.

3. The conveying device according to claim 1 or 2, characterized in that, The connection assembly includes: An elastic part having a fixed end and a movable end disposed opposite to each other, the fixed end being fixed to the sheath assembly; A tongue part, the tongue part being connected to the movable end and extending from the movable end towards the lateral hole; When the transmission assembly moves into the clip seat, the transmission assembly can squeeze the elastic part to cause elastic deformation thereof, so as to drive the tongue part to protrude out of the sheath assembly from the lateral hole and connect with the clip seat.

4. The conveying device according to claim 3, wherein The sheath assembly has a central axis O; The distance between the fixed end and the central axis O is greater than the distance between the movable end and the central axis O.

5. The conveying device according to claim 3, characterized in that, The tongue part has a shoulder located within the sheath assembly; The shoulder can contact the side wall of the sheath assembly.

6. The conveying device according to claim 3, characterized in that, The sheath assembly further has an assembly hole communicating with the channel; The connection assembly further includes a bent part, the bent part being connected to the fixed end, the bent part being disposed within the assembly hole and abutting against the hole wall of the assembly hole.

7. The conveying device according to claim 3, characterized in that, The sheath assembly has a plurality of the lateral holes arranged along its circumferential direction; The conveying device includes a plurality of the connection assemblies, and the tongue part of each connection assembly is correspondingly arranged with one of the lateral holes.

8. The conveying device according to claim 1 or 2, characterized in that, The sheath assembly further has an avoidance groove communicating with the channel, the avoidance groove being located on opposite sides of the sheath assembly in its radial direction and extending along the extending direction of the sheath assembly; The conveying device further includes: An auxiliary fitting arranged to be movable along the extending direction of the sheath assembly, the auxiliary fitting being provided with a clamping part, the clamping part being arranged opposite to the avoidance groove, and the clamping part being arranged to be able to enter the channel through the avoidance groove under extrusion to clamp the transmission assembly.

9. The conveying device according to claim 8, characterized in that, The auxiliary fitting includes a main body part, the main body part being sleeved on the sheath assembly and being able to move along the extending direction of the sheath assembly, and the clamping part being connected to the main body part; The main body part has a relief groove corresponding to the avoidance groove; At least a portion of the clamping portion is disposed in the clearance groove, and the clamping portion is configured to be squeezed so that at least a portion of it can pass through the clearance groove and enter the avoidance groove.

10. The conveying device according to claim 9, characterized in that The clamping portion comprises: A driving arm having a connecting end and a free end arranged opposite to each other, wherein the connecting end is connected to the main body; from the connecting end to the free end, at least a portion of the driving arm extends in a direction gradually away from the transmission assembly; The pressure head is connected to the free end and extends from the free end toward the transmission assembly.

11. The conveying device according to claim 1 or 2, characterized in that, The sheath assembly includes a sheath body and a transition cap which are arranged in sequence from the proximal end to the distal end and are interconnected, the transmission assembly passes through the sheath body and the transition cap, the lateral hole is opened on the transition cap, and at least a portion of the connection assembly is located in the transition cap.

12. The conveying device according to claim 11, characterized in that, One end of the transition cap away from the sheath body is the distal end of the sheath assembly, the transition cap is provided with a limiting step, and the lateral hole is located on a side of the limiting step close to the distal end; When the distal end of the sheath assembly is inserted into the clamp seat, the lateral hole is located in the clamp seat, and the limiting step is opposite to the edge of the clamp seat.

13. The conveying device according to claim 11, characterized in that, The transmission assembly includes a connected cable and a transmission head, wherein the cable is configured to drive the transmission head to move along the channel, and the transmission head is configured to be able to squeeze the connection assembly and be connected to the clamp.

14. The conveying device according to claim 13, characterized in that, The transmission head comprises: A cone head configured to be inserted into the fixture; A base, connected to the cable and spaced apart from the cone head; A connecting portion connected between the base and the cone head; When the cone head is inserted into the fixture, at least a portion of the fixture is located between the cone head and the base, and is in contact with the coupling portion.

15. A clip device, characterized in that, include: The conveying device according to any one of claims 1 to 14, and A clamp assembly, wherein the clamp assembly and the conveying device are arranged as a separate structure; A protective shell, the protective shell is used to assemble the clamp assembly and the delivery device, the protective shell includes a positioning assembly; The clamp assembly can be accommodated in the protective shell, and the conveying device can be inserted into the protective shell and positioned in cooperation with the positioning assembly so as to be connected with the clamp assembly.

16. The clip device according to claim 15, wherein, The clamp assembly includes a clamp and a clamp seat that accommodates at least part of the clamp. The clamp is configured to be connectable to the transmission assembly of the conveying device. The inner circumferential surface of the clamp seat is provided with a limiting groove. The connecting assembly of the conveying device can be embedded in the limiting groove to be connected to the clamp seat.

17. The clip device according to claim 16, characterized in that, The clamp comprises a clip element and a buckle connected to each other, wherein the buckle comprises at least two holding units arranged around a central axis M thereof, and one end of the holding unit away from the clip element has a holding portion; The transmission head of the transmission assembly can be inserted between the at least two holding units, and the holding portion is used to limit the position of the transmission head so that the transmission head is connected to the buckle.

18. The clip device according to claim 17, characterized in that, The inner space of the clip seat has a first section and a second section arranged in sequence along its axial direction. The first section is located on the side of the second section away from the clip element, and the radial dimension R of the first section is greater than the radial dimension r of the second section; When the holding part is located in the first section, the holding parts of the at least two holding units can move away from each other under the extrusion force of the driving head; When the holding part is located in the second section, the inner peripheral surface of the clip seat can contact the holding unit to prevent the holding parts of the at least two holding units from moving away from each other.

19. The clip device according to claim 17, wherein, An accommodation groove is formed between the at least two holding units, and the driving head can be inserted into the accommodation groove; the holding part is arranged at the notch of the accommodation groove and protrudes inward in the radial direction.

20. The clip device according to claim 17, wherein The buckle further includes a hinge seat hinged to the clip element, and the holding unit is arranged on the side of the hinge seat away from the clip element; The holding unit further includes a first holding arm and a second holding arm respectively connected to the hinge seat. The holding part is arranged on the sides of the first holding arm and the second holding arm away from the hinge seat and connects the first holding arm and the second holding arm.

21. The clip device according to claim 17, wherein, In the case where the driving head is inserted between the at least two holding units, the holding part is located between the conical head and the base of the driving head and fits with the engaging part.

22. The clip device according to claim 21, wherein, The driving head can drive the clip assembly to rotate relative to the connection assembly.

23. The clip device according to any one of claims 17 to 22, characterized in that, The buckle is arranged as an elastic structure.

24. The clip device according to claim 17, wherein The clip element includes a first clip and a second clip hinged to the buckle. Both the first clip and the second clip are provided with sliding grooves; a pin shaft is arranged in the clip seat, and the pin shaft passes through the sliding grooves; The sliding groove is provided with an open position A, a closed position B and a locking position C. The transmission assembly drives the clip element to move through the buckle, so that the pin shaft can reciprocate between the open position A and the closed position B; In the open position A, the first clip and the second clip are opened. In the closed position B, the first clip and the second clip are closed; The locking position C is located on the side of the closed position B away from the open position A. A first convex part is arranged in the sliding groove of the first clip, and a second convex part opposite to the first convex part is arranged in the sliding groove of the second clip. The first convex part and the second convex part are located between the locking position C and the closed position B; the transmission assembly drives the clip element to move towards the proximal end through the buckle, so that the pin shaft squeezes the first convex part and the second convex part and moves to the locking position C. In the locking position C, the first clip and the second clip are locked.

25. The clip device according to claim 24, characterized in that, The first clip is provided with a first avoidance notch, and the second clip is provided with a second avoidance notch. When the pin shaft squeezes the first convex part and the second convex part, the first convex part can deform towards the first avoidance notch, and the second convex part can deform towards the second avoidance notch.

26. The clip device according to claim 15, wherein, The protective shell further includes: The housing assembly has a receiving groove and a fitting groove inside. The receiving groove is used to place the clip assembly, and the fitting groove is for the conveying device to insert into the receiving groove through it; The positioning assembly is connected to the housing assembly and includes a first positioning portion and a second positioning portion which are oppositely arranged. The first positioning portion and the second positioning portion are disposed between the receiving groove and the fitting groove. The first positioning portion and the second positioning portion are used to cooperate with the sheath assembly in the conveying device to position the sheath assembly when the conveying device is inserted into the receiving groove.

27. An assembly method, characterized in that, For the clip device according to any one of claims 15 to 26, the assembling method includes: Insert the conveying device into the protective housing so that the positioning assembly of the protective housing cooperates with the conveying device to position the conveying device; Manipulate the handle mechanism of the conveying device to make the transmission assembly of the conveying device insert into the seat of the clip assembly and connect with the fixture. The clip assembly is received in the protective housing in a closed state; Complete the assembly by pulling out the conveying device from the protective housing and taking out the clip assembly together.

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