Hemostatic clip and hemostatic instrument set

Abstract

A hemostatic clip and hemostatic device assembly are disclosed. The hemostatic clip includes: a retention end unit comprising a locking tube, a claw assembly, and a connector. The claw assembly includes claws connected to the connector located within the locking tube. At least one claw is provided with a first stop portion capable of forming a stop with the locking tube. The connector is slidably mounted on the locking tube and is provided with a first hook. The locking tube is provided with a second hook. An operating end unit comprises an operating tube, an operating inner core, a locking block, and a locking block. A second stop portion is provided at one axial end of the operating tube. The operating inner core includes a core body and a core head. The core body is inserted into the operating tube, and the core head is located on the outside of the operating tube. The locking block is located on the inside of the operating tube and is fixedly connected to the core body. The locking block is slidably connected to the core body and is located between the core head and the locking block. The locking block includes a first engaging portion and a second engaging portion capable of abutting against the second stop portion. The hemostatic clip has a docking state and a disengaged state.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a hemostatic clip and a hemostatic device assembly. Background Technology

[0002] Hemostatic clips are commonly used in conjunction with endoscopes to mechanically clamp and stop bleeding in the upper and lower digestive tracts. In these techniques, hemostatic clips are typically disposable instruments, making reuse difficult, resulting in significant waste and high costs.

[0003] Therefore, how to provide a solution to overcome or alleviate the above-mentioned defects remains a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] The purpose of this invention is to provide a hemostatic clip and a hemostatic device assembly. The hemostatic clip has a relatively simple structure and is relatively easy to operate. Furthermore, the operating end unit of the hemostatic clip can be reused multiple times, which can reduce waste and lower costs.

[0005] To solve the above-mentioned technical problems, the present invention provides a hemostatic clip, comprising: a retention end unit, including a locking tube, a claw assembly, and a connecting body; the claw assembly includes at least two claws, the tail of each claw being located inside the locking tube and connected to the connecting body located inside the locking tube; at least one claw having a first stop portion on its portion outside the locking tube, the first stop portion being able to form a stop with the locking tube; the connecting body being slidably assembled to the locking tube, the connecting body having a first hook, and the locking tube having a second hook; and an operating end unit, including an operating tube, an operating inner core, a locking block, and a locking block; one axial end of the operating tube having a second stop portion; and the operating inner core including a core body and a core head. The core portion is inserted into the operating tube, the core head is located on the outside of the operating tube, the locking block is located on the inside of the operating tube, the locking block is fixedly connected to the core portion, the locking block is slidably connected to the core portion, and the locking block is located between the core head and the locking block. The locking block includes a first locking portion and a second locking portion arranged axially. The second locking portion is located inside the operating tube and can abut against the second stop portion. The hemostatic clamp has a docking state and a disengaged state. In the docking state, the core head is engaged with the first hook, and the first locking portion is engaged with the second hook. In the disengaged state, the operating end unit and the retention end unit can be disengaged.

[0006] Optionally, the locking tube has a front end plate and an outer peripheral plate, the outer peripheral plate is provided with a third hook, and the connecting body is provided with a third stop; the gripper assembly has an open release state and a retracted clamping state; in the open release state, the third stop is located between the front end plate and the third hook; in the retracted clamping state, the first stop and the locking tube abut against each other, the third stop is located on the side of the third hook away from the front end plate, and the third stop and the third hook abut against each other.

[0007] Optionally, the connector includes a substrate and at least two first hooks, each of the first hooks being located on the same side of the substrate.

[0008] Optionally, the connector further includes a connecting shaft and two ear plates, the two ear plates being located on the side of the base plate opposite to the first hook, the number of grippers being two, the tails of the two grippers being disposed between the two ear plates, and the connecting shaft being inserted and fixed to the two ear plates and the tails of the two grippers.

[0009] Optionally, the gripper includes a shank section and a curved connecting section, the end of the curved connecting section away from the shank section forming the tail, and the first stop portion being formed on the shank section.

[0010] Optionally, the locking tube includes an outer peripheral plate, which is provided with a groove-shaped or hole-shaped clearance structure, which is used to avoid deformation of the first hook.

[0011] Optionally, the core part includes a separate operating core and a connecting core, wherein the connecting core is connected to the core head or is an integral structure, and the connecting core and the operating core are connected by the locking block.

[0012] Optionally, the operating tube includes a rigid tube and a flexible tube, the rigid tube having a second stop portion, the flexible tube being located at one end of the rigid tube opposite to the second stop portion, and the flexible tube being connected to the rigid tube.

[0013] Optionally, in the docking state, the core head and the retention end unit can rotate synchronously.

[0014] The present invention also provides a hemostatic device assembly, including a hemostatic clip and a hemostatic box, wherein the hemostatic clip is the hemostatic clip described above, and the retention end unit is housed in the hemostatic box.

[0015] Optionally, the hemostatic box has a receiving chamber, a receiving channel, and an inlet / outlet channel, wherein the receiving channel is connected to the receiving chamber, and the inlet / outlet channel is connected to the receiving channel; the locking tube is located in the receiving channel, the gripper assembly in the open / released state is located in the receiving chamber, the cavity wall of the receiving chamber can support the gripper in the open / released state, and the operating end unit can be inserted into the inlet / outlet channel.

[0016] Optionally, a limiting structure is provided in the receiving chamber. When the hemostatic clamp is in the docking state and the operating end unit drives the clamping claw assembly to retract, the limiting structure can abut against each of the clamping claws to limit the clamping claw assembly to a retracted, unclamped state. The clamping claw assembly in the retracted, unclamped state can detach from the hemostatic box through the receiving channel and the inlet / outlet channel.

[0017] Optionally, the hemostatic box has a stepped surface formed between the receiving channel and the inlet / outlet channel, the stepped surface being used to abut against the operating tube.

[0018] Optionally, the hemostatic box includes a separate first box and a second box.

[0019] When the hemostatic clip provided in this embodiment of the invention is initially used, the hemostatic clip may be in a detached state, and each jaw in the jaw assembly may be in an open and released state.

[0020] When needed, the operating unit and the retaining unit can be connected first. Specifically, the operating tube of the operating unit and the locking tube of the retaining unit can be brought into contact, and a driving force can be applied to the operating core, causing the operating core to move into the locking tube, thereby achieving the engagement of the core head and the first hook. Furthermore, during the movement, the operating core can also drive the locking block through the locking block, causing the locking block to also move into the locking tube, thereby achieving the engagement of the first locking part and the second hook. In this way, the hemostatic clip can be switched to the docking state. When the hemostatic clip is in the docking state, there can be two locking engagements between the operating unit and the retaining unit, which can improve the connection reliability between the retaining unit and the operating unit.

[0021] When mechanical clamping is required to stop bleeding at the patient's bleeding site, a driving force can still be applied to the operating core, causing the core head to move towards the operating tube. The core head can then move the connecting body via the first latch, thereby allowing the grippers to enter the locking tube further and switch the gripper assembly to a contracted clamping state, thus achieving mechanical clamping hemostasis at the patient's bleeding site. At this time, the first stop can abut against the locking tube to limit further displacement of the gripper assembly into the locking tube.

[0022] Subsequently, a driving force can be continued to be applied to the operating core, allowing the core head to continue moving towards the operating tube. Because the gripper assembly is limited by the locking tube, the connector can no longer move synchronously with the core head, allowing the core head to overcome the locking limitation of the first hook and disengage from it. Furthermore, the core head can then abut against the locking block, generating a driving force that causes the first locking part to overcome the locking limitation of the second hook, disengaging the first locking part from the second hook. This decoupling between the operating end unit and the retention end unit is achieved. The retention end unit can remain at the patient's bleeding site, while the operating end unit can be removed for repeated use, thus reducing waste.

[0023] As can be seen from the above description, the switching between the docking and disengaging states of the hemostatic clip, and the switching between the open / released and retracted / clamped states of the gripper assembly, can all be achieved simply by manipulating the inner core. Therefore, the hemostatic clip provided by this invention also has the technical advantages of being simple to operate and convenient to use.

[0024] In addition, the number of components contained in the retention end unit and the operating end unit of the hemostatic clip is relatively small. The operating core can drive the card block to engage or disengage through the core head and the locking block. The structure is also relatively simple. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of a hemostatic clamp in a docking state according to an embodiment of the present invention, wherein the clamping claw assembly is in an open and released state; Figure 2 for Figure 1 A cross-sectional view; Figure 3 for Figure 1 Another axial section view; Figure 4 for Figure 1 Exploded view; Figure 5 This is a schematic diagram of the locking tube structure; Figure 6 for Figure 5 A cross-sectional view; Figure 7 A connection structure diagram of the gripper assembly and the connector; Figure 8 for Figure 7 Exploded view; Figure 9 This is a schematic diagram of the structure of the operation terminal unit; Figure 10 for Figure 9 Axial section view; Figure 11 for Figure 9 Exploded view; Figure 12A for Figure 1 A cross-sectional view of the hemostasis clip, in which the operating end unit and the retention end unit have just come into contact, and the core head has not yet entered the first latch; Figure 12B for Figure 12A Another axial section view of the hemostasis clip; Figure 13 for Figure 1 A cross-sectional view of the hemostatic clip, in which the core head begins to enter the first latch, and the first latch begins to deform; Figure 14A for Figure 1 A cross-sectional view of the hemostatic clip, in which the core head enters the first latch; Figure 14B for Figure 14A Another axial cross-sectional view of the hemostatic clip shows that the first locking part begins to enter the second locking hook, and the second locking hook begins to deform; Figure 15 for Figure 1 A cross-sectional view of a hemostatic clip, wherein the first locking part enters the second locking hook; Figure 16A A cross-sectional view of the hemostatic clamp, wherein the clamping claw assembly is in a retracted clamping state, and the core head is still engaged with the first hook; Figure 16B for Figure 16A Another axial cross-sectional view of the hemostasis clip shows the engagement of the first locking part and the second locking hook; Figure 17 This is a cross-sectional view of a hemostatic clip, in which the jaw assembly is in a retracted clamping state and the core head begins to disengage from the first hook; Figure 18 A cross-sectional view of a hemostatic clamp, wherein the clamping jaw assembly is in a retracted clamping state, and the first locking part and the second locking hook are disengaged; Figure 19 A schematic diagram of the structure of a blood-stopping box; Figure 20 This is a structural diagram of the first box. Figure 21 This is a schematic diagram of the structure of the second box. Figure 22 An exploded view of the hemostatic box and the retention end unit; Figure 23 A schematic diagram of the hemostasis device assembly; Figure 24 The diagram shows the relative positions of the first box and the hemostatic clip, where the gripper assembly is in the open and released state. Figure 25The diagram shows the relative positions of the first box and the hemostatic clip, where the clamping claw assembly is in a retracted, unclamped state. Figure 26 for Figure 25 Cross-sectional view; Figure 27 This is a schematic diagram of the structure when the first box and the hemostatic clamp are separated, wherein the clamping claw assembly is in a retracted and unclamped state.

[0026] The annotations in the attached figures are explained as follows: 1000-Hemostatic clip; 1100-Retention end unit; 1110-Locking tube; 1111-Front end plate; 1112-Outer peripheral plate; 1112A-Second hook; 1112B-Third hook; 1112C-Avoidance structure; 1112C1-First avoidance part; 1112C2-Second avoidance part; 1112D-Mounting hole; 1120-Claw assembly; 1121-Claw; 1121A-Claw handle section; 1121A1-First stop part; 1121B-Bending connection section; 1130-Connector; 1131-Base plate; 1132-First latch; 1133-Connecting shaft; 1134-Ear plate; 1200-Operating end unit; 1210-Operating tube; 1211-Rigid tube; 1211A-Second stop; 1212-Flexible tube; 1220-Operating inner core; 1221-Core body; 1221A-Operating core; 1221B-Connecting core; 1222-Core head; 1222A-Conical surface; 1222B-Limiting surface; 1230-Locking block; 1240-Clamping block; 1241-First latching part; 1242-Second latching part; 2000 - Hemostatic box; 2100 - First box body; 2110 - First receiving cavity; 2120 - First receiving channel; 2130 - First inlet / outlet channel; 2140 - First limiting part; 2150 - First stepped surface; 2200 - Second box body; 2210 - Second receiving cavity; 2220 - Second receiving channel; 2230 - Second inlet / outlet channel; 2240 - Second limiting part; 2250 - Second stepped surface. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] In the description of the embodiments of the present invention, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," and "third" may explicitly or implicitly include one or more of that feature.

[0029] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection" and "linking" should be interpreted broadly. For example, "linking" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0030] In the description of embodiments of the present invention, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0031] Please refer to Figures 1-11 , Figure 1 This is a schematic diagram of the structure of a hemostatic clamp in a docking state according to an embodiment of the present invention, wherein the clamping claw assembly is in an open and released state; Figure 2 for Figure 1 A cross-sectional view; Figure 3 for Figure 1 Another axial section view; Figure 4 for Figure 1 Exploded view; Figure 5 This is a schematic diagram of the locking tube structure; Figure 6 for Figure 5 A cross-sectional view; Figure 7 A connection structure diagram of the gripper assembly and the connector; Figure 8 for Figure 7 Exploded view; Figure 9 This is a schematic diagram of the structure of the operation terminal unit; Figure 10 for Figure 9 Axial section view; Figure 11 for Figure 9 Exploded view.

[0032] like Figures 1-4 As shown, an embodiment of the present invention provides a hemostatic clip 1000, including a retention end unit 1100 and an operating end unit 1200.

[0033] The retention end unit 1100 includes a locking tube 1110, a gripper assembly 1120, and a connector 1130.

[0034] Combination Figure 5The locking tube 1110 is provided with a mounting hole 1112D. The gripper assembly 1120 includes at least two grippers 1121, each of which can be inserted and fitted into the locking tube 1110 through the mounting hole 1112D to achieve connection between the gripper assembly 1120 and the locking tube 1110. After connection, the tail of each gripper 1121 can be located inside the locking tube 1110 and can be connected to the connector 1130 located inside the locking tube 1110. Furthermore, at least one of the grippers 1121 has a first stop portion 1121A1 on the portion outside the locking tube 1110. The first stop portion 1121A1 can form a stop with the locking tube 1110 to limit the size of the portion of the gripper 1121 entering the locking tube 1110. The connector 1130 is slidably fitted into the locking tube 1110. The connector 1130 is provided with a first hook 1132, and the locking tube 1110 is provided with a second hook 1112A.

[0035] The operation unit 1200 includes an operation tube 1210, an operation inner core 1220, a locking block 1230, and a card block 1240.

[0036] A second stop 1211A is provided at one axial end of the operating tube 1210. The operating inner core 1220 includes a core body 1221 and a core head 1222. The core body 1221 is inserted into the operating tube 1210, and the core head 1222 is located on the outside of the operating tube 1210. The locking block 1230 is located on the inside of the operating tube 1210 and is fixedly connected to the core body 1221. The locking block 1240 is slidably connected to the core body 1221 and is located between the core head 1222 and the locking block 1230. The locking block 1240 includes a first locking part 1241 and a second locking part 1242 arranged axially; wherein, the second locking part 1242 is located inside the operating tube 1210 and can abut against the second stop 1211A to prevent the locking block 1240 from disengaging from the operating tube 1210.

[0037] In this embodiment of the invention, the hemostatic clip 1000 has a docking state and a disengaged state.

[0038] During initial use, the hemostatic clip 1000 can be in a detached state, that is, the operating end unit 1200 and the retention end unit 1100 are not yet connected, and each jaw 1121 in the jaw assembly 1120 can be in an open and released state. The jaw assembly 1120 in the open and released state can be found in [reference needed]. Figures 1-3 As shown.

[0039] When needed, the operating end unit 1200 and the retention end unit 1100 can be connected first. Specifically, the operating tube 1210 of the operating end unit 1200 and the locking tube 1110 of the retention end unit 1100 can be brought into contact, and a driving force can be applied to the operating core 1220, so that the operating core 1220 can be displaced into the locking tube 1110, thereby realizing the engagement of the core head 1222 and the first hook 1132; and, during the movement, the operating core 1220 can also drive the locking block 1240 through the locking block 1230, so that the locking block 1240 can also be displaced into the locking tube 1110, thereby realizing the engagement of the first engaging part 1241 and the second hook 1112A; in this way, the hemostatic clip 1000 can be switched to the docking state. As can be seen, in the docking state, the hemostatic clip 1000 provided in this embodiment of the invention can have two snap-fit ​​connections between the operating end unit 1200 and the retention end unit 1100, which can improve the connection reliability between the retention end unit 1100 and the operating end unit 1200.

[0040] When mechanical clamping is required to stop bleeding at the patient's bleeding site, a driving force can still be applied to the operating core 1220, causing the core head 1222 to move towards the operating tube 1210. The core head 1222 can drive the connecting body 1130 to move via the first hook 1132, thereby driving the grippers 1121 to enter the locking tube 1110 further, switching the gripper assembly 1120 into a contracted clamping state, thus achieving mechanical clamping hemostasis at the patient's bleeding site. At this time, the first stop 1121A1 can abut against the locking tube 1110 to limit further displacement of the gripper assembly 1120 into the locking tube 1110.

[0041] Subsequently, a driving force can be continued to be applied to the operating core 1220, allowing the core head 1222 to continue to move towards the operating tube 1210. Since the gripper assembly 1120 is limited by the locking tube 1110, the connecting body 1130 can no longer move synchronously with the core head 1222. The core head 1222 can overcome the locking limitation of the first hook 1132, and the core head 1222 and the first hook 1132 can disengage. Furthermore, the core head 1222 can abut against the locking block 1240 to generate a driving force on the locking block 1240, thereby causing the first locking part 1241 to overcome the locking limitation of the second hook 1112A, and the first locking part 1241 and the second hook 1112A can disengage. In this way, the operating end unit 1200 and the retention end unit 1100 can be decoupled. The retention end unit 1100 can remain at the bleeding site of the patient, while the operating end unit 1200 can be removed for repeated use, thereby reducing waste.

[0042] As can be seen from the above description, the switching between the docking and disengaging states of the hemostatic clip 1000, and the switching between the opening and releasing state and the retracting and clamping state of the gripper assembly 1120, can all be achieved simply by manipulating the operating core 1220. Therefore, the hemostatic clip 1000 provided in this embodiment of the invention also has the technical advantages of being simple to operate and convenient to use.

[0043] In addition, the number of components included in the retention end unit 1100 and the operation end unit 1200 of the hemostatic clip 1000 is relatively small. The operation core 1220 can drive the card block 1240 to engage or disengage through the core head 1222 and the locking block 1230. The structure is also relatively simple.

[0044] In some implementations, such as Figure 5 and Figure 6 As shown, the locking tube 1110 can be a cup-shaped structure, including a front end plate 1111 and an outer peripheral plate 1112, with the outer peripheral plate 1112 located on one side of the front end plate 1111. The front end plate 1111 and the outer peripheral plate 1112 can be a one-piece structure formed integrally. Alternatively, the front end plate 1111 and the outer peripheral plate 1112 can be prepared separately and then assembled. Specific assembly processes can include welding, screw connection, etc., which are not limited here.

[0045] The aforementioned mounting hole 1112D can be formed on the outer peripheral plate 1112; or, the aforementioned mounting hole 1112D can also be formed on the front end plate 1111; or, the aforementioned mounting hole 1112D can also be formed on both the front end plate 1111 and the outer peripheral plate 1112. In short, it is acceptable as long as it enables the connection and assembly of the gripper 1121 and the locking tube 1110. When the gripper 1121 is inserted into the mounting hole 1112D, not only can the connection between the gripper 1121 and the locking tube 1110 be achieved, but also the gripper 1121 and the locking tube 1110 can rotate synchronously.

[0046] The outer peripheral plate 1112 may be provided with the aforementioned second hook 1112A, and the outer peripheral plate 1112 may also be provided with a third hook 1112B. Both the second hook 1112A and the third hook 1112B can be formed by cutting and bending the outer peripheral plate 1112, thus simplifying their formation. It should be understood that the aforementioned second hook 1112A and third hook 1112B can also be prepared separately and then connected to the outer peripheral plate 1112 through welding processes, which is also feasible.

[0047] The connector 1130 may be provided with a third stop. As previously described, the gripper assembly 1120 has an open release state and a retracted clamping state.

[0048] In the open / released state, the third stop can be located between the front end plate 1111 and the third hook 1112B. The third hook 1112B can stop the third stop, thereby limiting the installation position of the connector 1130 in the locking tube 1110. This helps to keep the gripper assembly 1120 in the aforementioned open / released state and can largely prevent the gripper assembly 1120 from switching to the retracted clamping state due to accidents or other factors.

[0049] When the operating core 1220 is driven, each gripper 1121 of the gripper assembly 1120 can enter more deeply into the locking tube 1110, allowing the gripper assembly 1120 to switch to a retracted clamping state. At this time, the first stop 1121A1 can abut against the locking tube 1110 to limit the gripper assembly 1120, thus limiting the size of the portion of each gripper 1121 entering the locking tube 1110. Furthermore, the third stop can also axially pass over the third hook 1112B. That is, in the retracted clamping state, the third stop can be located on the side of the third hook 1112B away from the front end plate 1111, and the third stop can also abut against the third hook 1112B axially to prevent the third stop from displacing towards the front end plate 1111. In other words, the gripper assembly 1120 can be stably kept in the retracted clamping state.

[0050] As can be seen, in this embodiment of the invention, by providing a third stop in the connecting body 1130 and a third hook 1112B in the locking tube 1110, and through the cooperation of the third stop and the third hook 1112B, the gripper assembly 1120 can be relatively stably in the open release state and the retracted clamping state.

[0051] Combination Figure 7 The gripper 1121 may include a gripper shank section 1121A and a curved connecting section 1121B. Specifically, the gripper 1121 may be inserted into the aforementioned mounting hole 1112D through the curved connecting section 1121B, thereby connecting with the locking tube 1110. The end of the curved connecting section 1121B away from the gripper shank section 1121A may form a tail.

[0052] The first stop portion 1121A1 may be formed in the clamping shank section 1121A.

[0053] It is known that the gripper 1121 has a certain degree of elasticity. When the inner core 1220 applies a driving force to the connecting body 1130 to move the gripper 1121 into the locking tube 1110, the gripper 1121 can undergo a certain deformation, thereby switching to the aforementioned contracted clamping state. When the gripper assembly 1120 has not switched to the contracted clamping state, for example, when each gripper 1121 has only contracted to a certain extent and has not clamped, and the third stop has not yet passed the third hook 1112B, if the inner core 1220 applies a reverse driving force to the connecting body 1130 to move the gripper 1121 out of the locking tube 1110, the gripper 1121 can also elastically reset and switch back to the open release state.

[0054] In some implementations, the outer peripheral plate 1112 may also be provided with a groove-shaped or hole-shaped clearance structure 1112C. The clearance structure 1112C is used to avoid the deformation of the first hook 1132, so as to avoid interference with the deformation of the first hook 1132.

[0055] It should be understood that the "hole type" here refers to the avoidance structure 1112C being a through hole structure, which can penetrate the outer peripheral plate 1112 radially; the "groove type" here refers to the avoidance structure 1112C being a non-through hole structure, which does not penetrate the outer peripheral plate 1112 radially. In this embodiment of the invention, the avoidance structure 1112C with the hole type is preferably adopted. With this configuration, under the condition that the deformation degree of the first hook 1132 is consistent, the radial dimension of the outer peripheral plate 1112 can be made smaller, so that the structural size of the retention end unit 1100 can be relatively small, which is beneficial to the delivery of the retention end unit 1100 to the patient's bleeding site.

[0056] In the implementation of the attached diagram, as follows: Figure 5 As shown, the avoidance structure 1112C may include a first avoidance portion 1112C1 and a second avoidance portion 1112C2 arranged at intervals along the axial direction; wherein, the first avoidance portion 1112C1 is relatively close to the front end plate 1111, and the second avoidance portion 1112C2 is relatively far away from the front end plate 1111. In conjunction with the foregoing description of the docking and separation process of the operating end unit 1200 and the retaining end unit 1100, the first avoidance portion 1112C1 is used to avoid deformation of the first hook 1132 during docking, and the second avoidance portion 1112C2 is used to avoid deformation of the first hook 1132 during separation.

[0057] It should be understood that in some other implementations of the present invention, the avoidance structure 1112C may also include only one avoidance part in the axial direction. In this case, the axial dimension of the avoidance part can be relatively large so as to avoid the deformation of the first hook 1132 during docking and the deformation of the first hook 1132 during separation.

[0058] In fact, in this embodiment of the invention, the outer peripheral plate 1112 may not be provided with the above-mentioned avoidance structure 1112C. In this case, the inner diameter of the outer peripheral plate 1112 can be set to be relatively large so that the outer peripheral plate 1112 will not interfere with the deformation of the first hook 1132, which is also feasible.

[0059] In some implementations, such as Figure 7 and Figure 8 As shown, the connector 1130 may include a substrate 1131 and at least two first hooks 1132. Both first hooks 1132 may be located on the same side of the substrate 1131.

[0060] The substrate 1131 and the first hook 1132 can be an integrally formed structure. In this case, the connector 1130 can be formed by cutting, bending, or other processes on the plate. Alternatively, the substrate 1131 and the first hook 1132 can be prepared separately and then assembled. The specific assembly process can be, for example, welding.

[0061] In some implementations, the connector 1130 may also include a connecting shaft 1133 and two ear plates 1134. The two ear plates 1134 may be located on the side of the substrate 1131 away from the first hook 1132, that is, the ear plates 1134 and the first hook 1132 may be located on opposite sides of the substrate 1131 respectively.

[0062] The substrate 1131 and the ear plate 1134 can be a one-piece structure. In this case, the connector 1130 can be formed by cutting, bending, or other processes on the plate. Alternatively, the substrate 1131 and the ear plate 1134 can be prepared separately and then assembled. The specific assembly process can be welding, for example.

[0063] In this embodiment of the invention, there can be two grippers 1121. The tails of both grippers 1121 can be disposed between the two ear plates 1134. The connecting shaft 1133 can be inserted and fixed to the two ear plates 1134 and the tails of the two grippers 1121 to realize the connection and assembly of the grippers 1121 and the connector 1130. Furthermore, the connecting shaft 1133 can also serve as the aforementioned third stop, for cooperating with the third hook 1112B to limit the position of the connector 1130 within the locking tube 1110.

[0064] In some implementations, such as Figures 9-11 As shown, the core part 1221 includes a separate operating core 1221A and a connecting core 1221B, so that the materials of the operating core 1221A and the connecting core 1221B can be adjusted as needed.

[0065] The connecting core 1221B and the operating core 1221A can be connected by the locking block 1230, so that the operating core 1221A and the connecting core 1221B can move synchronously. The connection method of the connecting core 1221B and the operating core 1221A and the locking block 1230 can be, for example, bonding, welding, fusion, etc., and is not limited here, as long as the reliability requirements of the connection can be met.

[0066] In practical use, the operating core 1221A can be displaced by applying a force to it. The operating core 1221A can be, for example, a steel wire.

[0067] The connecting core 1221B and the core head 1222 can be prepared separately and then joined together by bonding or other processes. Alternatively, the connecting core 1221B and the core head 1222 can also be a one-piece structure.

[0068] In some implementations, the operating tube 1210 can also be a split structure, including a rigid tube 1211 and a flexible tube 1212.

[0069] The rigid tube 1211 is used to abut against the locking tube 1110 to facilitate the abutment and positioning of the operating tube 1210 and the locking tube 1110. Furthermore, the rigid tube 1211 may also have the aforementioned second stop portion 1211A to ensure the structural strength of the second stop portion 1211A.

[0070] The flexible tube 1212 can be located at the end of the rigid tube 1211 away from the second stop portion 1211A. The flexible tube 1212 can be connected to the rigid tube 1211, and the specific connection method can be, for example, bonding or welding. The provision of the flexible tube 1212 allows the operating tube 1210 to be bent, which can better adapt to the curved structure of the human body cavity, so as to facilitate the delivery of the hemostatic clip 1000 into the human body cavity; and, the hemostatic clip 1000 can be easily stored and released by an automated instrument. Such automated instruments can be, for example, the flexible instrument delivery unit with application number 202211117678.9, etc., which will not be described in detail here.

[0071] It should be understood that in some other implementations of the present invention, the operating tube 1210 may also include only the rigid tube 1211 or the flexible tube 1212 described above, which is also feasible.

[0072] In some implementations, such as Figure 9 As shown, the core head 1222 may be provided with a conical surface 1222A, which can play a guiding role and can better realize the connection between the core head 1222 and the connector 1130.

[0073] In addition, the outer wall surface of the core head 1222 is provided with a limiting surface 1222B. This limiting surface 1222B can be a plane, for example, which cooperates with the inner wall surface of the first hook 1132 to achieve synchronous rotation of the core head 1222 and the retention end unit 1100 in the docked state. With this configuration, when a rotational driving force is applied to the operating core 1220, the cooperation between the core head 1222 and the first hook 1132 can also drive the connecting body 1130 (i.e., the retention end unit 1100) to rotate, thereby adjusting the usage posture of the gripper assembly 1120 and making it more conducive to the reliable clamping of the patient's bleeding site by the gripper assembly 1120.

[0074] The following embodiments of the present invention will describe the docking process between the retention end unit 1100 and the operation end unit 1200. Please refer to [link / reference needed] for details. Figures 12A-15 , Figure 12A for Figure 1 A cross-sectional view of the hemostasis clip, in which the operating end unit and the retention end unit have just come into contact, and the core head has not yet entered the first latch; Figure 12B for Figure 12A Another axial section view of the hemostasis clip; Figure 13 for Figure 1 A cross-sectional view of the hemostatic clip, in which the core head begins to enter the first latch, and the first latch begins to deform; Figure 14A for Figure 1 A cross-sectional view of the hemostatic clip, in which the core head enters the first latch; Figure 14B for Figure 14A Another axial cross-sectional view of the hemostatic clip shows that the first locking part begins to enter the second locking hook, and the second locking hook begins to deform; Figure 15 for Figure 1 A cross-sectional view of the hemostatic clip, in which the first locking part enters the second locking hook.

[0075] like Figure 12A and Figure 12B As shown, in the initial state, the gripper assembly 1120 can be in an open and released state, and the connecting shaft 1133 (third stop) can be located between the front end plate 1111 and the third hook 1112B. When it is necessary to dock the holding end unit 1100 and the operating end unit 1200, the rigid tube 1211 and the locking tube 1110 can be controlled to abut against each other along the axial direction, and an axial driving force can be applied to the operating inner core 1220 so that the core head 1222 can extend into the locking tube 1110 and abut against the first hook 1132.

[0076] like Figure 13As shown, when an axial driving force is continuously applied to the operating core 1220, the core head 1222 can drive the first hook 1132 to deform, and the first avoidance part 1112C1 can avoid the deformation of the first hook 1132.

[0077] like Figure 14A and Figure 14B As shown, by continuously applying an axial driving force to the operating core 1220, the core head 1222 can engage with the first latch 1132. At the same time, the locking block 1230 can generate a driving force on the latch block 1240, and the first latching portion 1241 of the latch block 1240 can drive the second latch 1112A to deform.

[0078] like Figure 15 As shown, by continuously applying an axial driving force to the operating core 1220, the first locking part 1241 can engage with the second locking hook 1112A. The retention end unit 1100 and the operating end unit 1200 are docked, and two axial locking fits can be formed between the retention end unit 1100 and the operating end unit 1200, resulting in high reliability of the connection.

[0079] It should be understood that in the above description of the docking process, the engagement of the core head 1222 and the first hook 1132 is performed first, and the engagement of the first engaging part 1241 and the second hook 1112A is performed later. In fact, the engagement of the core head 1222 and the first hook 1132, as well as the engagement of the first engaging part 1241 and the second hook 1112A, can also be performed simultaneously.

[0080] The following embodiments of the present invention will describe the separation process of the retention end unit 1100 and the operation end unit 1200. Please refer to the following for details. Figures 16A-18 , Figure 16A A cross-sectional view of the hemostatic clamp, wherein the clamping claw assembly is in a retracted clamping state, and the core head is still engaged with the first hook; Figure 16B for Figure 16A Another axial cross-sectional view of the hemostasis clip shows the engagement of the first locking part and the second locking hook; Figure 17 This is a cross-sectional view of a hemostatic clip, in which the jaw assembly is in a retracted clamping state and the core head begins to disengage from the first hook; Figure 18 This is a cross-sectional view of a hemostatic clamp, in which the clamping jaw assembly is in a retracted clamping state, and the first locking part and the second locking hook are disengaged.

[0081] In contrast to the above Figure 15 and combined Figure 16A and Figure 16BWhen it is necessary to separate the holding end unit 1100 and the operating end unit 1200, a driving force can be applied to the operating inner core 1220 in the direction of disengagement from the locking tube 1110. Since the core head 1222 and the first hook 1132 are in a snap-fit ​​relationship, when the driving force is initially applied to the operating inner core 1220, the operating inner core 1220 can apply a driving force to the connecting body 1130 through the first hook 1132, so that the connecting body 1130 can apply a driving force to the gripper assembly 1120, so that the gripper assembly 1120 can enter more into the locking tube 1110, and the gripper assembly 1120 can be switched to the retracted clamping state. At this time, the connecting shaft 1133 can pass over the third hook 1112B and abut against the third hook 1112B to keep the gripper assembly 1120 in the above-mentioned retracted clamping state. The first stop part 1121A1 can also abut against the locking tube 1110 to prevent the gripper assembly 1120 from continuing to enter the locking tube 1110.

[0082] like Figure 17 As shown, since the gripper assembly 1120 has already made contact with and limited the locking tube 1110, when the driving force is continuously applied to the operating core 1220, the operating core 1220 will not be able to continue to move synchronously with the connecting body 1130. The core head 1222 can drive the first hook 1132 to deform, and the second avoidance part 1112C2 can avoid the deformation of the first hook 1132.

[0083] like Figure 18 As shown, after the core head 1222 and the first hook 1132 are disengaged, by continuously applying a driving force to the operating core 1220, the core head 1222 can also abut against the locking block 1240, so as to apply a driving force to the locking block 1240, so that the first locking part 1241 of the locking block 1240 can drive the second hook 1112A to deform, and finally the locking block 1240 and the second hook 1112A are disengaged. At this time, the operating end unit 1200 and the retention end unit 1100 are completely separated.

[0084] Please refer to Figures 19-27 , Figure 19 A schematic diagram of the structure of a blood-stopping box; Figure 20 This is a structural diagram of the first box. Figure 21 This is a schematic diagram of the structure of the second box. Figure 22 An exploded view of the hemostatic box and the retention end unit; Figure 23 A schematic diagram of the hemostasis device assembly; Figure 24 The diagram shows the relative positions of the first box and the hemostatic clip, where the gripper assembly is in the open and released state. Figure 25 The diagram shows the relative positions of the first box and the hemostatic clip, where the clamping claw assembly is in a retracted, unclamped state. Figure 26 for Figure 25 Cross-sectional view; Figure 27 This is a schematic diagram of the structure when the first box and the hemostatic clamp are separated, wherein the clamping claw assembly is in a retracted and unclamped state.

[0085] like Figures 19-24 As shown, this embodiment of the invention provides a hemostatic device assembly, including a hemostatic clip 1000 and a hemostatic box 2000. The hemostatic clip 1000 is the same as the hemostatic clip 1000 involved in the aforementioned implementations. Therefore, the hemostatic device assembly provided by this embodiment of the invention should also possess the technical effects that the hemostatic clip 1000 involved in the aforementioned implementations should possess, and will not be described again here.

[0086] The hemostatic clip 1000 includes a retention end unit 1100, which is housed in the hemostatic box 2000.

[0087] The hemostatic box 2000 can have a receiving chamber, a receiving channel, and an inlet / outlet channel. The receiving channel and the receiving chamber can be connected, and the inlet / outlet channel and the receiving channel can be connected. Figure 22 and Figure 24 The locking tube 1110 can be located in the receiving channel, and the gripper assembly 1120 in the open and released state can be located in the receiving chamber. The cavity wall of the receiving chamber can support the gripper 1121 in the open and released state to ensure that the retention end unit 1100 can be stably placed in the hemostatic box 2000, which can reduce the possibility of shaking.

[0088] Specifically, the operating end unit 1200 can be inserted through the inlet / outlet channel to dock with the dwell end unit 1100, thereby driving the dwell end unit 1100 to move in position.

[0089] In this embodiment of the invention, the hemostatic box 2000 includes a separate first box body 2100 and a second box body 2200. Figure 20 and Figure 21 The first box 2100 may be provided with a first receiving cavity 2110, and the second box 2200 may be provided with a second receiving cavity 2210. The first receiving cavity 2110 and the second receiving cavity 2210 can be connected to each other to form the aforementioned receiving chamber. The first box 2100 may also be provided with a first receiving channel 2120, and the second box 2200 may also be provided with a second receiving channel 2220. The first receiving channel 2120 and the second receiving channel 2220 can be connected to each other to form the aforementioned receiving channel. The first box 2100 may also be provided with a first inlet / outlet channel 2130, and the second box 2200 may also be provided with a second inlet / outlet channel 2230. The first inlet / outlet channel 2130 and the second inlet / outlet channel 2230 can be connected to each other to form the aforementioned inlet / outlet channel.

[0090] Combination Figures 24-27 In the initial state, the retention end unit 1100 may be located inside the hemostatic box 2000, and the gripper assembly 1120 of the retention end unit 1100 may be in an open and released state, and each gripper 1121 of the gripper assembly 1120 may be in contact with the inner wall of the receiving chamber. When the hemostatic clip 1000 needs to be used, the operating end unit 1200 can be inserted into the hemostatic box 2000 along the inlet / outlet channel, and then the operating core 1220 can be manipulated to allow the operating end unit 1200 and the retention end unit 1100 to dock. Afterwards, the operating core 1220 can be moved in the reverse direction, and the operating core 1220 can drive the gripper assembly 1120 to retract in the receiving chamber. When the gripper assembly 1120 retracts to a certain state, the operating end unit 1200 can be driven to drive the retention end unit 1100 to detach from the hemostatic box 2000 so that the retention end unit 1100 can be used.

[0091] A stepped surface may be provided between the inlet / outlet channel and the receiving channel, which can abut against the operating tube 1210 to limit the insertion depth of the operating end unit 1200 within the hemostatic box 2000 when it is docked with the retention end unit 1100. Specifically, as Figure 20 and Figure 21 As shown, the step surface may include a first step surface 2150 and a second step surface 2250. The first step surface 2150 may be formed between the first receiving channel portion 2120 and the first inlet / outlet channel portion 2130, and the second step surface 2250 may be formed between the second receiving channel portion 2220 and the second inlet / outlet channel portion 2230.

[0092] Furthermore, in this embodiment of the invention, a limiting structure may also be provided within the accommodating cavity.

[0093] When the hemostatic clip 1000 is in the docked state and the operating end unit 1200 drives the gripper assembly 1120 to retract, the limiting structure can abut against each gripper 1121 to limit the gripper assembly 1120 to a retracted, unclamped state; combined with Figure 26 At this point, the core head 1222 has not passed the first latch 1132, and the connecting shaft 1133 has not passed the third latch 1112B, thus preventing the gripper assembly 1120 from accidentally clamping when switching to the retracted clamping state. Afterwards, by applying force to the operating tube 1210, the gripper assembly 1120, in its retracted and unclamped state, can be controlled to detach from the hemostatic box 2000 along the receiving channel and the inlet / outlet channel.

[0094] Combination Figure 20 and Figure 21In this embodiment of the invention, the limiting structure may include a first limiting part 2140 and a second limiting part 2240. The first limiting part 2140 may be disposed in the first receiving cavity 2110, and the second limiting part 2240 may be disposed in the second receiving cavity 2210. The first limiting part 2140 and the second limiting part 2240 can be combined to form the above-described limiting structure. It should be understood that in some other implementations of this invention, only one of the first limiting part 2140 and the second limiting part 2240 may be provided, which is also feasible.

[0095] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A hemostatic clip, characterized in that, include: The retention end unit includes a locking tube, a gripper assembly, and a connector. The gripper assembly includes at least two grippers, the tail of each gripper being located inside the locking tube and connected to the connector located inside the locking tube. At least one gripper has a first stop portion on its portion outside the locking tube, which can form a stop with the locking tube. The connector is slidably mounted on the locking tube and has a first hook. The locking tube has a second hook. The operating unit includes an operating tube, an operating inner core, a locking block, and a locking block. A second stop is provided at one axial end of the operating tube. The operating inner core includes a core body and a core head. The core body is inserted into the operating tube, and the core head is located on the outside of the operating tube. The locking block is located on the inside of the operating tube and is fixedly connected to the core body. The locking block is slidably connected to the core body and is located between the core head and the locking block. The locking block includes a first engaging portion and a second engaging portion arranged axially. The second engaging portion is located inside the operating tube and can abut against the second stop. The hemostatic clip has a docking state and a disengaged state; When switching from the separation state to the docking state, the operating core can drive the locking block through the locking block, causing the locking block to move into the locking tube; In the docking state, the core head engages with the first hook, and the first engaging part engages with the second hook; in the separating state, the operating end unit and the retaining end unit can detach from each other.

2. The hemostatic clip according to claim 1, characterized in that, The locking tube has a front end plate and an outer peripheral plate, the outer peripheral plate is provided with a third hook, and the connecting body is provided with a third stop. The gripper assembly has an open release state and a retracted clamping state; In the open and released state, the third stop is located between the front end plate and the third hook; in the contracted and clamped state, the first stop and the locking tube abut against each other, the third stop is located on the side of the third hook away from the front end plate, and the third stop and the third hook abut against each other.

3. The hemostatic clip according to claim 1, characterized in that, The connector includes a substrate and at least two first hooks, each of which is located on the same side of the substrate.

4. The hemostatic clip according to claim 3, characterized in that, The connector also includes a connecting shaft and two ear plates. The two ear plates are located on the side of the base plate opposite to the first hook. There are two grippers. The tails of the two grippers are disposed between the two ear plates. The connecting shaft is inserted and fixed to the two ear plates and the tails of the two grippers.

5. The hemostatic clip according to claim 1, characterized in that, The gripper includes a handle section and a curved connecting section, the end of the curved connecting section away from the handle section forming the tail, and the first stop portion is formed on the handle section.

6. The hemostatic clip according to claim 1, characterized in that, The locking tube includes an outer peripheral plate, which is provided with a groove-shaped or hole-shaped clearance structure, which is used to avoid deformation of the first hook.

7. The hemostatic clip according to any one of claims 1-6, characterized in that, The core part includes a separate operating core and a connecting core. The connecting core is connected to the core head or is an integral structure. The connecting core and the operating core are connected by the locking block.

8. The hemostatic clip according to any one of claims 1-6, characterized in that, The operating tube includes a rigid tube and a flexible tube. The rigid tube has a second stop portion. The flexible tube is located at one end of the rigid tube opposite to the second stop portion. The flexible tube and the rigid tube are connected.

9. The hemostatic clip according to any one of claims 1-6, characterized in that, In the docking state, the core head and the retention end unit can rotate synchronously.

10. A hemostatic device assembly, characterized in that, It includes a hemostatic clip and a hemostatic box, wherein the hemostatic clip is the hemostatic clip according to any one of claims 1-9, and the retention end unit is housed in the hemostatic box.

11. The hemostatic device assembly according to claim 10, characterized in that, The hemostatic box has a receiving chamber, a receiving channel, and an inlet / outlet channel. The receiving channel is connected to the receiving chamber, and the inlet / outlet channel is connected to the receiving channel. The locking tube is located in the receiving channel, the gripper assembly in the open and released state is located in the receiving chamber, the cavity wall of the receiving chamber can support the gripper in the open and released state, and the operating end unit can be inserted into the inlet and outlet channel.

12. The hemostatic device assembly according to claim 11, characterized in that, The receiving chamber is provided with a limiting structure. When the hemostatic clamp is in the docking state and the operating end unit drives the claw assembly to retract, the limiting structure can abut against each of the claws to limit the claw assembly to a retracted, unclamped state. The claw assembly in the retracted, unclamped state can detach from the hemostatic box through the receiving channel and the inlet / outlet channel.

13. The hemostatic device assembly according to claim 11, characterized in that, The hemostatic box has a stepped surface between the receiving channel and the inlet / outlet channel, and the stepped surface is used to abut against the operating tube.

14. The hemostatic device assembly according to any one of claims 10-13, characterized in that, The hemostatic box includes a separate first box and a second box.

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