Conveying device and hemostatic clip

Abstract

The utility model discloses a conveying device and a hemostatic clip, and belongs to the field of medical instruments.The conveying device comprises a main body structure and an auxiliary body structure, the main body structure comprises a handle mechanism and a transmission mechanism which are connected, and the end, away from the handle mechanism, of the transmission mechanism is used for being connected with a clip assembly; the protective sleeve is arranged on the main body structure and provided with a containing hole, and the containing hole is used for containing the clamp assembly; the end, away from the handle mechanism, of the transmission mechanism can be inserted into the containing hole to be connected with the clamp assembly. According to the conveying device, the protective sleeve is arranged on the main body structure of the conveying device, the containing hole is formed in the protective sleeve, and the clamp assembly can be contained in the containing hole. In the actual assembling process, an operator only needs to operate the handle mechanism with one hand, hold the end, away from the handle mechanism, of the transmission mechanism with the other hand and insert the end into the containing hole, the assembly with the clamp assembly can be achieved, the operation difficulty is low, and the assembling efficiency is effectively improved.

Description

Technical Field

[0001] This application belongs to the field of medical device technology, specifically relating to a delivery device and a hemostatic clamp. Background Technology

[0002] Hemostatic clips are common surgical instruments used to control bleeding in many surgeries, such as gastrointestinal and respiratory surgeries. Hemostatic clips are typically single-use, meaning the clip assembly and delivery system are integrated; after the clip assembly is released, the delivery system is also discarded. While this design ensures product hygiene and safety, it also results in higher usage costs.

[0003] For some designs where the clamp assembly is intended for single use but the delivery device is intended for reusability, a receiving device also needs to be designed for the clamp assembly. In actual use, doctors need to insert the delivery device into the receiving device and then connect the clamp assembly from the receiving device, which is a very inconvenient operation. Utility Model Content

[0004] The purpose of this utility model is to provide a conveying device to solve the technical problem of inconvenient operation of connecting clamp components from a receiving device; another purpose of this application is to provide a hemostatic clamp.

[0005] Technical solution: The present application provides a conveying device for conveying clamp assemblies, the conveying device comprising:

[0006] The main structure includes a handle mechanism and a transmission mechanism connected to each other, wherein the end of the transmission mechanism away from the handle mechanism is used to connect to the clamp assembly;

[0007] A protective sleeve is provided on the main structure, and the protective sleeve has a receiving hole for receiving the clip assembly;

[0008] The end of the transmission mechanism away from the handle mechanism is configured to be inserted into the receiving hole for connection with the clip assembly.

[0009] In some embodiments, the protective sleeve includes a constraint structure disposed at the receiving hole, the constraint structure having a constrained state and a released state;

[0010] Under the constrained state, the constraint structure, through mechanical constraint, is able to hold the clamp assembly within the receiving hole;

[0011] When the transmission mechanism is inserted into the receiving hole, the mechanical constraint of the constraint structure is released, and the structure enters the released state.

[0012] In some embodiments, when the transmission mechanism is inserted into the receiving hole, the constraint structure is compressed and elastically deformed outward, entering the released state.

[0013] In some embodiments, the wall of the receiving hole is provided with a plurality of deformation grooves along the axial direction, the deformation grooves penetrating the wall and being distributed at intervals in the circumferential direction;

[0014] The constraint structure includes an elastic arm and a constraint portion. In the circumferential direction, the elastic arm is disposed between two adjacent deformation grooves, and the constraint portion is disposed on the elastic arm and protrudes toward the receiving hole.

[0015] In some embodiments, the constraint structure further includes a guide protrusion disposed on the elastic arm and located on the side of the constraint portion near the opening of the receiving hole;

[0016] In the constrained state, the constraining part constrains the clamp assembly by the elastic force of the elastic arm retracting into the receiving hole;

[0017] When the transmission mechanism is inserted into the receiving hole, the transmission mechanism abuts against the guide protrusion, driving the elastic arm to elastically deform outward.

[0018] In some embodiments, the guide protrusion protrudes into the receiving hole by a dimension L1, and the constraint portion protrudes into the receiving hole by a dimension L2, satisfying: L1≥L2.

[0019] In some embodiments, the constraint portion is disposed at the opening of the receiving hole.

[0020] In some embodiments, the constraint structure includes a destructible constraint layer covering the opening of the receiving hole;

[0021] Under the constrained state, the destructible constraint layer is able to enclose the clip assembly within the receiving hole;

[0022] When the transmission mechanism is inserted into the receiving hole, the destructible constraint layer is destroyed, and the constraint structure enters the released state.

[0023] In some embodiments, the protective sleeve further includes an observation window communicating with the receiving hole, the observation window being used to expose at least a portion of the clip assembly when the clip assembly is located within the receiving hole.

[0024] In some embodiments, the conveying device includes a plurality of protective sleeves, which are spaced apart on the main structure.

[0025] In some embodiments, the transmission mechanism includes a sheath assembly on which the protective sleeve is disposed.

[0026] In some embodiments, the sheath assembly has a first end and a second end opposite to each other, the first end being connected to the handle mechanism and the second end being used to connect to the clip assembly;

[0027] The distance between the protective sleeve on the sheath assembly and the first end is less than the distance between the protective sleeve and the second end, so that the second end can be inserted into the receiving hole when the sheath assembly is bent.

[0028] In some embodiments, the protective cover is provided on the handle mechanism.

[0029] In some embodiments, the transmission mechanism includes a sheath assembly and a cable assembly passing through the sheath assembly, and the handle mechanism includes:

[0030] The base is connected to the sheath assembly;

[0031] An operating component is movably mounted on the base and connected to the cable assembly, and a protective sleeve is fixedly connected to the operating component.

[0032] In some embodiments, the operating element includes a slider movably fitted onto the base and finger sleeves connected to both sides of the slider;

[0033] The protective sleeve is disposed on both sides of the slider and connected to the side of the finger sleeve near the transmission mechanism.

[0034] In some embodiments, the transmission mechanism includes a sheath assembly, a connecting assembly disposed within the sheath assembly, and a cable assembly passing through the sheath assembly, wherein the sheath assembly is provided with a lateral hole;

[0035] Driven by the handle mechanism, the cable assembly can move outward toward the sheath assembly and press the connecting assembly, causing a portion of the connecting assembly to protrude from the lateral hole to the outside of the sheath assembly for connecting the clip assembly.

[0036] Accordingly, a hemostatic clip as described in the embodiments of this application includes:

[0037] The conveying device as described in any of the above embodiments; and,

[0038] A clamp assembly, the clamp assembly being configured to be received in a receiving hole of the conveying device;

[0039] The transmission mechanism of the conveying device can be connected to the clamp assembly and bring the clamp assembly out of the receiving hole.

[0040] In some embodiments, the clamp assembly includes a clamp and a clamp seat that receives at least a portion of the clamp, the inner wall of the clamp seat being provided with a limiting groove;

[0041] The cable assembly of the conveying device, driven by the handle mechanism, can move toward the clamp to connect the clamp.

[0042] As the cable assembly moves toward the clamp, the cable assembly presses against the connecting assembly, causing a portion of the connecting assembly to protrude outside the sheath assembly and embed into the limiting groove to connect to the clamp.

[0043] Beneficial Effects: The conveying device provided in this application embodiment is used to convey clamp assemblies. The conveying device includes: a main structure, including a handle mechanism and a transmission mechanism connected to each other, with one end of the transmission mechanism away from the handle mechanism for connecting to the clamp assembly; a protective sleeve disposed on the main structure, the protective sleeve having a receiving hole for receiving the clamp assembly; and the end of the transmission mechanism away from the handle mechanism being configured to be inserted into the receiving hole for connection to the clamp assembly. In this application embodiment, by providing a protective sleeve with a receiving hole on the main structure of the conveying device, the clamp assembly can be received in the receiving hole. In actual assembly, the operator only needs to operate the handle mechanism with one hand and hold the end of the transmission mechanism away from the handle mechanism with the other hand, inserting it into the receiving hole to achieve assembly with the clamp assembly. The operation is simple and effectively improves assembly efficiency.

[0044] The hemostatic clip of this application embodiment can have all the technical features and effects of the above-mentioned delivery device, which will not be repeated here. Attached Figure Description

[0045] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0046] Figure 1 This is a schematic diagram of the hemostatic clip provided in Embodiment 1 of this application;

[0047] Figure 2 for Figure 1 A magnified schematic diagram of a portion of region E in the middle;

[0048] Figure 3 For along Figure 2 Cross-sectional view of the structure after being cut along the CC line;

[0049] Figure 4This is a partially enlarged structural diagram of Embodiment 2 of this application;

[0050] Figure 5 For along Figure 4 Cross-sectional view of the structure after being cut along the DD line;

[0051] Figure 6 This is a partially enlarged structural diagram of Embodiment 3 of this application;

[0052] Figure 7 For along Figure 6 Cross-sectional view of the structure after being cut along the middle EE line;

[0053] Figure 8 This is a schematic diagram of the conveying device provided in Embodiment 4 of this application;

[0054] Figure 9 This is a schematic diagram of the conveying device provided in Embodiment 4 of this application;

[0055] Figure 10 for Figure 1 A magnified schematic diagram of a portion of region A in the middle;

[0056] Figure 11 This is a side view of the conveying device provided in Embodiment 4 of this application;

[0057] Figure 12 for Figure 11 A magnified schematic diagram of a portion of region B in the middle;

[0058] Figure 13 The conveying device provided in Embodiment 4 of this application is along Figure 11 Schematic diagram of the cross-sectional structure along line AA;

[0059] Figure 14 for Figure 13 A magnified schematic diagram of a portion of region C in the middle;

[0060] Figure 15 for Figure 13 A magnified schematic diagram of a portion of region D in the middle;

[0061] Figure 16 This is a schematic diagram of the main structure of the conveying device provided in the embodiments of this application;

[0062] Figure 17 A partial cross-sectional view of the conveying device provided in the embodiment of this application in the retracted state of the cable assembly;

[0063] Figure 18 A partial cross-sectional view of the conveying device provided in the embodiment of this application with the cable assembly extended;

[0064] Figure 19This is a partial cross-sectional view of the conveying device provided in Embodiment 5 of this application;

[0065] Figure 20 This is a schematic diagram of the structure of a clip assembly provided in an embodiment of this application;

[0066] Figure 21 For along Figure 21 Schematic diagram of the cross-sectional structure of the middle BB line;

[0067] Figure 22 A partial cross-sectional view of the hemostatic clip provided in an embodiment of this application;

[0068] Reference numerals: 10-Conveying device; 100-Main structure; 110-Handle mechanism; 111-Base; 112-Operating component; 1121-Slider; 1122-Finger sleeve; 120-Transmission mechanism; 121-Sheath assembly; 1211-Sheath body; 1212-Transition section; 1213-First end; 1214-Second end; 1215-Side hole; 122-Cable assembly; 1221-Cable body; 1222 - Connecting head; 123 Connecting assembly; 130 Protective sleeve; 131 Receiving hole; 1310 Orifice; 1311 Hole wall; 132 Observation window; 133 Constraint structure; 134 Elastic arm; 135 Constraint part; 136 Guide protrusion; 137 Deformation groove; 138 Destructible constraint layer; 20 Clamp assembly; 21 Clamp; 22 Clamp seat; 211 Clamp piece; 212 Pull buckle; 210 Limiting groove. Detailed Implementation

[0069] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0070] In the description of this application, it should be understood that the terms "proximal" and "distal" are relative to the operator (doctor). "Proximal" refers to the end closer to the operator, and "distal" refers to the end further away from the operator relative to the "proximal," i.e., closer to the patient. The terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or apparatus referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. "Multiple" means two or more, and "at least one" can mean one, two, or more, unless otherwise explicitly specified. The terms "installed," "connected," and "linked" should be interpreted broadly, for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two devices or the interaction between two devices, unless otherwise explicitly specified. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0071] Endoscopic hemostatic clips are a common medical device, typically consisting of a clip assembly and a delivery system. In practice, doctors often need to select different models of hemostatic clips based on the patient's specific condition, resulting in a large usage volume. While disposable hemostatic clips ensure hygiene and safety, they also lead to higher operating costs. To address this issue, some manufacturers have begun to separate the clip assembly and delivery system; the clip assembly is disposable, while the delivery system is reusable. This approach reduces operating costs while maintaining product hygiene and safety.

[0072] As a starting point for this application, current hemostatic clip products with disposable clip components and reusable delivery devices still require a separate receiving shell. This receiving shell is used to pre-clamp and fix the clip component, and the doctor needs to insert the delivery device into the receiving shell to complete the product assembly. This process requires the doctor to hold the handle mechanism with one hand and the distal end of the delivery device with the other, and also requires assistance from others to hold the receiving shell. During assembly, it is difficult to align the distal end of the delivery device with the receiving shell, resulting in high assembly difficulty and low efficiency. Furthermore, this receiving shell is a separate component, which is easily lost in actual use.

[0073] In view of this, the delivery device 10 and the hemostatic clip having the delivery device 10 provided in the embodiments of this application are intended to solve the above-mentioned technical problems.

[0074] Please see Figure 1 , Figure 1 The diagram illustrates the structure of a hemostatic clip according to Embodiment 1 of this application. The hemostatic clip includes a delivery device 10 and a clip assembly 20, which are configured as separate structures capable of being interconnected. In use, the two are assembled together to form a hemostatic clip, which can then be applied to surgical procedures. The clip assembly 20 is for single use, while the delivery device 10 can be reused, reducing usage costs.

[0075] like Figure 1 As shown, the conveying device 10 includes a main structure 100 and a protective sleeve 130. The main structure 100 includes a handle mechanism 110 and a transmission mechanism 120 connected together. The end of the transmission mechanism 120 away from the handle mechanism 110 is used to connect to the clamp assembly 20. The handle mechanism 110 is the structure that the operator holds during operation. It is connected to the transmission mechanism 120. By operating the handle mechanism 110, the transmission mechanism 120 can be driven to move, thereby driving the clamp assembly 20 to complete operations such as opening, clamping, locking, and releasing.

[0076] Please combine Figure 1 and Figure 2 The protective sleeve 130 is disposed on the main structure 100, and the protective sleeve 130 has a receiving hole 131 for receiving the clip assembly 20. Figure 16 As shown, the end of the transmission mechanism 120 away from the handle mechanism 110 is configured to be inserted into the receiving hole 131 for connection with the clip assembly 20.

[0077] like Figure 3 As shown, by accommodating the clamp assembly 20 within the receiving hole 131, the clamp assembly 20 can be temporarily stored for later use, and it can also be pre-fixed for easy connection. Specifically, when the clamp assembly 20 is placed within the receiving hole 131, the hole wall 1311 of the receiving hole 131 contacts the clamp assembly 20, thus constraining and fixing the clamp assembly 20. By inserting the end of the transmission mechanism 120 away from the handle mechanism 110 into the receiving hole 131, the conveying device 10 and the clamp assembly 20 can be assembled and connected.

[0078] Understandably, since the protective sleeve 130 is mounted on the main structure 100, the operator can keep the protective sleeve 130 stable simply by holding the main structure 100. Thus, the operator can hold the handle mechanism 110 with one hand and the end of the transmission mechanism 120 furthest from the handle mechanism 110 with the other, accurately inserting that end into the protective sleeve 130 to complete the assembly of the conveyor device 10 and the clamp assembly 20. No one else is needed to hold the protective sleeve 130, reducing assembly difficulty and improving installation and usage efficiency. Furthermore, since the protective sleeve 130 is mounted on the main structure 100 and is part of the conveyor device 10, it is less likely to be lost, ensuring safety during use.

[0079] Please refer to the following: Figures 1 to 7 In some embodiments, the protective sleeve 130 includes a constraint structure 133 disposed at the receiving hole 131, the constraint structure 133 for retaining the clip assembly 20 within the receiving hole 131 to maintain stable and reliable reception of the clip assembly 20. The constraint structure 133 has a constrained state and a released state; in the constrained state, the constraint structure 133 mechanically holds the clip assembly 20 within the receiving hole 131; when the transmission mechanism 120 is inserted into the receiving hole 131, the mechanical constraint of the constraint structure 133 is released, entering the released state.

[0080] Understandably, the constrained state refers to the constraint structure 133 applying physical restrictions to the clamp assembly 20 through its own mechanical properties (such as elastic contraction force, limiting structure, or closed structure) when it is not interfered with by external forces, preventing it from detaching from the receiving hole 131. The released state refers to the constraint structure 133 undergoing physical changes due to external forces (such as elastic expansion or structural damage) when the transmission mechanism 120 is inserted into the receiving hole 131, causing the physical restrictions on the clamp assembly 20 to be released, allowing the clamp assembly 20 to move out of the receiving hole 131 with the transmission mechanism 120. The two states are directly triggered by the insertion action of the transmission mechanism 120, and the state switching is accompanied by observable physical deformation or structural damage traces such as deformation of elastic components or perforation of the closed layer.

[0081] For example, please refer to again Figures 1 to 3 In Embodiment 1 of this application, the constraint structure 133 is an elastic structure. Utilizing its elastic contraction force, it can constrain the clamp assembly 20, allowing the clamp assembly 20 to be stably housed within the receiving hole 131, facilitating assembly and connection. When the transmission mechanism 120 is inserted into the receiving hole 131, the constraint structure 133 is compressed and elastically deformed outward, entering a release state.

[0082] Specifically, in Embodiment 1, the wall 1311 of the receiving hole 131 is provided with a plurality of deformation grooves 137 along the axial direction. The deformation grooves 137 penetrate the wall 1311 and are distributed at intervals in the circumferential direction. The constraint structure 133 includes an elastic arm 134 and a constraint part 135. In the circumferential direction, the elastic arm 134 is disposed between two adjacent deformation grooves 137, and the constraint part 135 is disposed on the elastic arm 134 and protrudes toward the receiving hole.

[0083] By creating multiple deformation grooves 137 circumferentially on the wall 1311 of the receiving hole 131, and ensuring that these grooves penetrate the wall 1311, the material stiffness in the region between adjacent deformation grooves 137 can be significantly reduced, thereby increasing the elastic deformation capacity of the elastic arm 134 located between two adjacent deformation grooves 137. The deformation grooves 137 extend axially along the receiving hole 131, which also limits the deformation freedom of the elastic arm 134 to some extent, allowing it to undergo outward elastic deformation around the end of the deformation groove 137 (i.e., the ungrooved position of the hole wall 1311 near the bottom of the hole), reducing random deformation and improving the reliability of switching between constrained and released states. Furthermore, the circumferentially spaced deformation grooves 137 evenly distribute the force, preventing excessive local stress that could lead to structural fracture.

[0084] The elastic arms 134 between adjacent deformation grooves 137 form a cantilever beam structure. The root (near the bottom of the hole) is the fixed end, and the free end (near the opening 1310) can be driven by external force to bend outward and generate elastic deformation. The constraint part 135 protrudes towards the receiving hole 131 and is used to directly contact the clamp assembly 20. In the constrained state, the constraint part 135 is limited by friction or mechanical engagement with the clamp assembly. When the elastic arm 134 bends outward, the constraint part moves outward synchronously with the elastic arm 134, disengaging from the clamp assembly 20, thereby releasing the constraint and entering the release state.

[0085] Here, axial direction refers to the extending direction of the receiving hole 131, that is, the straight line direction from the opening 1310 of the receiving hole 131 to the bottom of the hole. Circumferential direction refers to any closed loop around the center line of the receiving hole 131 in a plane perpendicular to the axial direction.

[0086] like Figure 3 As shown, the constraint structure 133 also includes a guide protrusion 136, which is disposed on the elastic arm 134 and located on the side of the constraint part 135 near the opening 1310 of the receiving hole 131. In the constrained state, the constraint part 135 is constrained by the elastic force of the elastic arm 134 retracting into the receiving hole 131 to form an elastic force constraint clamp assembly 20. When the transmission mechanism 120 is inserted into the receiving hole 131, the transmission mechanism 120 abuts against the guide protrusion 136 and drives the elastic arm 134 to elastically deform outward.

[0087] Under constrained conditions, the elastic force of the elastic arm 134 retracting into the receiving hole 131 is concentrated in the constrained part 135, and its protruding structure forms a stable clamping on the clamp assembly 20 to prevent unexpected detachment.

[0088] Furthermore, by positioning the guide protrusion 136 closer to the orifice 1310 than the constraint portion 135, when the transmission mechanism 120 is inserted into the receiving hole 131, it first contacts the guide protrusion 136 to form a force point, and squeezes the guide protrusion 136 to apply an outward force, transmitting the force to the root of the elastic arm 134 (the end away from the orifice 1310), forming a lever effect, which significantly reduces the operating force required to drive the elastic arm 134 to deform.

[0089] In addition, the surface of the guide protrusion 136 can be set as a smoothly transitioned arc surface, so that the contact surface between the guide protrusion 136 and the transmission mechanism 120 forms a sliding guide, so that the deformation direction of the elastic arm 134 is stably radially outward, reducing the incomplete release of constraints caused by twisting or deflection, and improving the reliability of assembly operations.

[0090] Please refer to it again. Figure 3 The guide protrusion 136 protrudes into the receiving hole 131 by a dimension L1, and the constraint part 135 protrudes into the receiving hole 131 by a dimension L2, satisfying: L1≥L2. Because the guide protrusion 136 has a larger protrusion dimension, it is preferentially abutted when the transmission mechanism 120 is inserted. Because the constraint part 135 has a smaller protrusion dimension, it can stay outside the movement path of the transmission mechanism 120 and the clamp assembly 20 during the release process, reducing friction and wear with the transmission mechanism 120 and ensuring the reliability of the constraint part 135 in limiting the clamp assembly 20.

[0091] Please refer to the following: Figure 4 and Figure 5 In Embodiment 2, unlike Embodiment 1, the constraint part 135 is located at the opening 1310 of the receiving hole 131, and is a limiting structure protruding towards the centerline of the receiving hole 131. When the clamp assembly 20 is placed in the receiving hole 131, the constraint part 135 is located on the side of the clamp assembly 20 closest to the opening 1310, blocking the clamp assembly 20 and reducing the possibility of it detaching on its own. During the process of inserting the transmission mechanism 120 into the receiving hole 131, the transmission mechanism 120 contacts the constraint part 135 first, forming a force point, squeezing the constraint part 135 to apply an outward force, transmitting the force to the root of the elastic arm 134 (the end away from the opening 1310), allowing the elastic arm 134 and the constraint part 135 to move outward, thereby entering the release state.

[0092] Optionally, the contact surface between the constraint part 135 and the transmission mechanism 120 is set as a smooth arc surface to form a sliding guide, which facilitates the insertion of the transmission mechanism 120 and improves the stability of the deformation direction of the elastic arm 134.

[0093] Please refer to the following: Figure 6 and Figure 7 In Embodiment 3, the constraint structure 133 includes a destructible constraint layer 138 covering the opening 1310 of the receiving hole 131. In the constrained state, the destructible constraint layer 138 can enclose the clip assembly 20 within the receiving hole 131. When the transmission mechanism 120 is inserted into the receiving hole 131, the destructible constraint layer 138 is destroyed, and the constraint structure 133 enters a released state. By fixing the destructible constraint layer 138 to the opening 1310, a physical barrier is formed over the clip assembly 20, ensuring that the clip assembly 20 cannot detach from the receiving hole 131 when not in use, while also reducing the entry of external contaminants into the receiving hole 131. In its intact state, the destructible constraint layer 138 resists the detachment force of the clip assembly 20 through its own structural strength (such as membrane tension), thus limiting the position of the clip assembly 20. When the transmission mechanism 120 is inserted, it directly penetrates or tears the destructible constraint layer 138 (e.g., through a membrane puncture), causing the constraint structure 133 to enter a released state.

[0094] It is understood that the destructible constraint layer 138 refers to an independent structural layer covering the orifice 1310 of the receiving hole 131. In the constrained state, it is a complete and continuous structure, and seals the orifice 1310 through its own physical strength, such as film tension and tensile strength, to prevent the clamp assembly 20 from detaching. In the process of entering the release state, the destructible constraint layer 138 must undergo irreversible physical damage, such as penetration, tearing, or rupture, due to the insertion of the transmission mechanism 120.

[0095] The destructible constraint layer 138 can be a mesh or film structure.

[0096] Optionally, in some embodiments, the constraint structure 133 may adopt any one or a combination of embodiments one, two, and three.

[0097] Please see Figure 8 and Figure 9 In the conveying device 10 provided in Embodiment 4 of this application, the main structure 100 mainly includes a handle mechanism 110 and a transmission mechanism 120. The handle mechanism 110 includes a base 111 and an operating member 112 movably disposed on the base 111.

[0098] Please refer to the following: Figure 10 , Figure 11 and Figure 13 In embodiment four, the base 111 is a generally rod-shaped guide connection structure, mainly including a guide rod, a connecting sleeve disposed at the distal end of the guide rod, and a thumb sleeve disposed at the proximal end of the guide rod. The operating member 112 is sleeved on the guide rod of the base 111 and can slide back and forth along the guide rod of the base 111. Please refer to... Figure 15The transmission mechanism 120 includes a sheath assembly 121 and a cable assembly 122. The cable assembly 122 is movably inserted into the sheath assembly 121, that is, the sheath assembly 121 is fitted around the outer periphery of the cable assembly 122. The connecting sleeve is connected to the sheath assembly 121 of the transmission mechanism 120, and the operating member 112 is connected to the cable assembly 122 of the transmission mechanism 120. Thus, when the operating member 112 slides back and forth relative to the base 111, it can drive the cable assembly 122 to move back and forth along the sheath assembly 121. In this forward-moving state, it can connect with the clamp assembly 20 and drive the clamp assembly 20 to complete operations such as opening, clamping, and releasing through back and forth movement.

[0099] like Figure 10 As shown, a protective sleeve 130 is fixedly connected to the handle mechanism 110, so that the protective sleeve 130 can be effectively stabilized when the handle mechanism 110 is held, making it convenient for the distal end of the transmission mechanism 120 to be inserted into the receiving hole 131 of the protective sleeve 130 and accurately assembled with the clip assembly 20.

[0100] like Figure 9 As shown, the handle mechanism 110 is provided with multiple protective sleeves 130, which are spaced apart on the main structure 100. Each protective sleeve 130 can accommodate a clamp assembly 20, so that after releasing one clamp assembly 20, the operator can connect and assemble another clamp assembly 20, which facilitates the operation.

[0101] Please combine them together Figure 10 , Figure 12 and Figure 14 The protective sleeve 130 is fixedly connected to the operating member 112, and has a receiving hole 131 thereon, which can accommodate the clamp assembly 20. When the clamp assembly 20 is accommodated into the receiving hole 131, the wall of the receiving hole 131 can restrain the clamp assembly 20 to pre-fix the clamp assembly 20. The opening of the receiving hole 131 faces away from the base 111, so as to facilitate the insertion of the distal end of the transmission mechanism 120 into the receiving hole 131, which facilitates assembly.

[0102] Specifically, such as Figure 13As shown, the operating component 112 includes a slider 1121 movably fitted onto the base 111 and finger sleeves 1122 connected to both sides of the slider 1121. The slider 1121 is fitted onto the guide rod of the base 111 and connected to the cable assembly 122. The finger sleeves 1122 are fixedly mounted on both sides of the slider 1121. In use, the operator can insert their thumb into the thumb sleeve of the base 111 and their index and middle fingers into the finger sleeves 1122 on both sides of the slider 1121, facilitating operation of the operating component 112 and allowing it to move back and forth along the base 111. Protective sleeves 130 are located on both sides of the slider 1121 and connected to the side of the finger sleeves 1122 closest to the transmission mechanism 120. That is, the protective sleeves 130 are located at the distal end of the finger sleeves 1122, so that the fingers do not obstruct the protective sleeves 130 when gripping, facilitating assembly.

[0103] The protective sleeve 130 and the operating component 112 are designed as an integral structure, that is, the protective sleeve 130 and the operating component 112 are two parts of the same part, and the two parts are connected as one.

[0104] Please refer to it again. Figure 10 The protective sleeve 130 is also provided with an observation window 132 communicating with the receiving hole 131. The observation window 132 is used to expose at least a portion of the clamp seat 22 of the clamp assembly 20 when the clamp assembly 20 is located in the receiving hole 131. Thus, after the distal end of the transmission mechanism 120 is inserted into the receiving hole 131, the relative position of the transmission mechanism 120 and the clamp seat 22 can be directly observed through the observation window 132, further improving assembly efficiency.

[0105] Please refer to the following: Figure 15 , Figure 17 and Figure 18 The transmission mechanism 120 includes a sheath assembly 121, a connecting assembly 123 disposed within the sheath assembly 121, and a cable assembly 122 penetrating the sheath assembly 121. The sheath assembly 121 is provided with a lateral hole 1215.

[0106] Specifically, one end of the sheath assembly 121 is a first end 1213, and the other end is a second end 1214. The first end 1213 is connected to the connecting sleeve of the handle mechanism 110, and the second end 1214 is used to connect to the clip assembly 20. The sheath assembly 121 includes a sheath body 1211 and a transition portion 1212 arranged sequentially from the first end 1213 to the second end 1214. The first end 1213 is the proximal end of the sheath body 1211, the transition portion 1212 is connected to the distal end of the sheath body 1211, a lateral hole 1215 is formed on the transition portion 1212, and the second end 1214 is the distal end of the transition portion 1212.

[0107] The connecting component 123 is an elastic sheet structure, which is installed inside the transition part 1212. Its fixed end is connected to the transition part 1212, and at least part of its movable end is inserted in the lateral hole 1215.

[0108] The cable assembly 122 includes a cable body 1221 and a coupling head 1222. The coupling head 1222 is connected to the distal end of the cable body 1221, and the proximal end of the cable body 1221 is connected to the operating element 112 of the handle mechanism 110. Figure 17 and Figure 18 Driven by the handle mechanism 110, the cable assembly 122 can move outward toward the sheath assembly 121 and press the connecting assembly 123, causing a portion of the connecting assembly 123 to protrude from the lateral hole 1215 to the outside of the sheath assembly 121. In other words, when the operating member 112 moves along the base 111 toward the distal end, it can drive the cable body 1221 to move toward the distal end, thereby causing the connecting head 1222 to press the connecting assembly 123, causing its movable end to protrude from the lateral hole 1215 to the outside of the sheath assembly 121, so that it can connect with the clamp seat 22 of the clamp assembly 20.

[0109] Please refer to the following: Figure 16 , Figures 17 to 18 During assembly, the operator holds the handle mechanism 110 with one hand and the sheath assembly 121 with the other, bending the sheath assembly so that its second end 1214 aligns with the receiving hole 131 and is inserted into the receiving hole 131. Then, by controlling the operating member 112 of the handle mechanism 110 to slide to the distal end, the cable body 1221 drives the connecting head 1222 to move into the clamp seat 22 of the clamp assembly 20, and presses the connecting assembly 123, causing a portion of the connecting assembly 123 to protrude from the lateral hole 1215 to the outside of the sheath assembly 121 and connect with the clamp seat 22. The connecting head 1222 connects with the clamp 21 of the clamp assembly 20, completing the assembly, and the clamp assembly 20 can be pulled out of the receiving hole 131.

[0110] It is understood that a protective sleeve 130 can also be provided on the base 111 in Embodiment 4. For example, the protective sleeve 130 can be fixed on the connecting sleeve, which can also achieve the above effect.

[0111] Please see Figure 19In Embodiment 5, a protective sleeve 130 is fixedly connected to the sheath assembly 121. Specifically, the distance between the protective sleeve 130 and the first end 1213 on the sheath assembly 121 is less than the distance between the protective sleeve 130 and the second end 1214, so that the second end 1214 can be inserted into the receiving hole 131 when the sheath assembly 121 is bent. Because the first end 1213 of the sheath assembly 121 is restrained by the connecting sleeve of the handle mechanism 110, the deformation of the portion of the sheath assembly 121 closer to the first end 1213 is smaller when the sheath assembly 121 is bent. By making the protective sleeve 130 on the sheath assembly 121 closer to the first end 1213, the protective sleeve 130 is less likely to wobble and is more stable, making it easier for the second end 1214 to be inserted into the receiving hole 131. Furthermore, the closer the protective sleeve 130 is to the first end 1213, the less likely it is to come into contact with the endoscope forceps channel during the operation, reducing the impact on the surgical procedure.

[0112] It is understood that in Embodiments 4 and 5, the protective cover 130 may also be provided with the constraint structure 133 of the aforementioned embodiments, which will not be described again here.

[0113] This application also provides a hemostatic clip, which includes a delivery device 10 as described in any of the above embodiments and a clip assembly 20. The clip assembly 20 is configured to be received in a receiving hole 131 of the delivery device 10 and to be connected to one end of a transmission mechanism 120 in the delivery device 10. The transmission mechanism 120 of the delivery device 10 can be connected to the clip assembly 20 and bring the clip assembly 20 out of the receiving hole 131.

[0114] Please refer to the following: Figure 20 , Figure 21 The clamp assembly 20 includes a clamp 21 and a clamp base 22 connected to each other, with at least a portion of the clamp 21 capable of being received within the clamp base 22. The clamp 21 includes a clamping piece 211 and a pull buckle 212 connected to the tail end of the clamping piece 211, the pull buckle 212 being used to engage with the coupling head 1222 of the cable assembly 122. A limiting groove 210 is provided on the inner wall of the clamp base 22, and the connecting component of the transmission mechanism 120 is embedded in the limiting groove 210 to engage with the clamp base 22.

[0115] For details, please refer to Figure 22 Driven by the handle mechanism 110, the cable assembly 122 of the conveying device 10 can move toward the clamp 22 to connect to the clamp 21. When the cable assembly 122 moves toward the clamp 22, the cable assembly 122 presses the connecting assembly 123, causing a portion of the connecting assembly 123 to protrude outside the sheath assembly 121 and be embedded in the limiting groove 210 to connect to the clamp 22.

[0116] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0117] The delivery device and hemostatic clip provided in the embodiments of this application have been described in detail above, and specific examples have been used to illustrate the principle and implementation of this application. The description of the above embodiments is only for the purpose of helping to understand the technical solution and core idea of ​​this application. Those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A conveying device, characterized in that, For conveying clamp assemblies, the conveying device includes: The main structure includes a handle mechanism and a transmission mechanism connected to each other, wherein the end of the transmission mechanism away from the handle mechanism is used to connect to the clamp assembly; A protective sleeve is provided on the main structure, and the protective sleeve has a receiving hole for receiving the clip assembly; The end of the transmission mechanism away from the handle mechanism is configured to be inserted into the receiving hole for connection with the clip assembly.

2. The conveying device according to claim 1, characterized in that, The protective sleeve includes a constraint structure disposed at the receiving hole, and the constraint structure has a constrained state and a released state. Under the constrained state, the constraint structure, through mechanical constraint, is able to hold the clamp assembly within the receiving hole; When the transmission mechanism is inserted into the receiving hole, the mechanical constraint of the constraint structure is released, and the structure enters the released state.

3. The conveying device according to claim 2, characterized in that, When the transmission mechanism is inserted into the receiving hole, the constraint structure is compressed and elastically deformed outward, entering the released state.

4. The conveying device according to claim 3, characterized in that, The wall of the receiving hole is provided with a plurality of deformation grooves along the axial direction, the deformation grooves penetrating the wall of the hole and being distributed at intervals in the circumferential direction; The constraint structure includes an elastic arm and a constraint portion. In the circumferential direction, the elastic arm is disposed between two adjacent deformation grooves, and the constraint portion is disposed on the elastic arm and protrudes toward the receiving hole.

5. The conveying device according to claim 4, characterized in that, The constraint structure further includes a guide protrusion, which is disposed on the elastic arm and located on the side of the constraint portion near the opening of the receiving hole; In the constrained state, the constraining part constrains the clamp assembly by the elastic force of the elastic arm retracting into the receiving hole; When the transmission mechanism is inserted into the receiving hole, the transmission mechanism abuts against the guide protrusion, driving the elastic arm to elastically deform outward.

6. The conveying device according to claim 5, characterized in that, The guide protrusion protrudes into the receiving hole by a dimension L1, and the constraint part protrudes into the receiving hole by a dimension L2, satisfying: L1≥L2.

7. The conveying device according to claim 4, characterized in that, The constraint part is disposed at the opening of the receiving hole.

8. The conveying device according to claim 2, characterized in that, The constraint structure includes a destructible constraint layer covering the opening of the receiving hole; Under the constrained state, the destructible constraint layer is able to enclose the clip assembly within the receiving hole; When the transmission mechanism is inserted into the receiving hole, the destructible constraint layer is destroyed, and the constraint structure enters the released state.

9. The conveying device according to claim 1, characterized in that, The protective sleeve is also provided with an observation window communicating with the receiving hole, the observation window being used to expose at least a portion of the clip assembly when the clip assembly is located in the receiving hole.

10. The conveying device according to claim 1, characterized in that, The conveying device includes a plurality of protective sleeves, which are spaced apart on the main structure.

11. The conveying device according to claim 1, characterized in that, The transmission mechanism includes a sheath assembly, on which the protective sleeve is disposed.

12. The conveying device according to claim 11, characterized in that, The sheath assembly has a first end and a second end opposite to each other, the first end being connected to the handle mechanism, and the second end being used to connect to the clip assembly; The distance between the protective sleeve on the sheath assembly and the first end is less than the distance between the protective sleeve and the second end, so that the second end can be inserted into the receiving hole when the sheath assembly is bent.

13. The conveying device according to claim 1, characterized in that, The protective cover is provided on the handle mechanism.

14. The conveying device according to claim 13, characterized in that, The transmission mechanism includes a sheath assembly and a cable assembly passing through the sheath assembly, and the handle mechanism includes: The base is connected to the sheath assembly; An operating component is movably mounted on the base and connected to the cable assembly, and a protective sleeve is fixedly connected to the operating component.

15. The conveying device according to claim 14, characterized in that, The operating component includes a slider movably fitted onto the base and finger sleeves connected to both sides of the slider; The protective sleeve is disposed on both sides of the slider and connected to the side of the finger sleeve near the transmission mechanism.

16. The conveying device according to claim 1, characterized in that, The transmission mechanism includes a sheath assembly, a connecting assembly disposed within the sheath assembly, and a cable assembly passing through the sheath assembly; the sheath assembly is provided with a lateral hole. Driven by the handle mechanism, the cable assembly can move outward toward the sheath assembly and press the connecting assembly, causing a portion of the connecting assembly to protrude from the lateral hole to the outside of the sheath assembly for connecting the clip assembly.

17. A hemostatic clip, characterized in that, include: The conveying device as described in any one of claims 1 to 16; as well as, A clamp assembly, the clamp assembly being configured to be received in a receiving hole of the conveying device; The transmission mechanism of the conveying device is connected and brings the clamp assembly out of the receiving hole.

18. The hemostatic clip according to claim 17, characterized in that, The clamp assembly includes a clamp and a clamp base that houses at least a portion of the clamp, the inner wall of the clamp base being provided with a limiting groove; The cable assembly of the conveying device, driven by the handle mechanism, can move toward the clamp to connect the clamp. As the cable assembly moves toward the clamp, the cable assembly presses against the connecting assembly, causing a portion of the connecting assembly to protrude outside the sheath assembly and embed into the limiting groove to connect to the clamp.

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