Connecting device, conveyor and conveying system

Abstract

The application relates to a connecting device, a conveyor and a conveying system. The connecting device comprises a plurality of connecting pieces, a plurality of locking pieces and a plurality of driving limit pieces, and the plurality of locking pieces, the plurality of connecting pieces and the plurality of driving limit pieces are arranged one by one in a one-to-one correspondence. The distal end of each connecting piece is provided with a locking groove. When the locking groove is in a locked state and the driving limit piece is relatively static with the corresponding connecting piece, under the action of an external force, each locking piece can independently slide along the axial direction of the corresponding connecting piece to the first direction to open the locking groove. When the external force disappears, the corresponding driving limit piece drives the locking piece to slide along the axial direction of the connecting piece to the second direction opposite to the first direction to lock the locking groove, and the locking piece is limited in the first direction and the second direction by the corresponding driving limit piece. When the plurality of driving limit pieces can be simultaneously acted on and respectively moved to the first direction along the plurality of connecting pieces, the plurality of locking pieces can be simultaneously driven to slide to the first direction along the plurality of connecting pieces to open the locking groove.

Description

Technical Field

[0001] This invention relates to the technical field of medical devices, and more particularly to a connecting device, a conveyor, and a conveying system. Background Technology

[0002] This section provides only background information relevant to this disclosure and is not necessarily prior art.

[0003] Interventional therapy is a minimally invasive treatment method that uses puncture needles, catheters, and other interventional devices to deliver specific instruments to the lesion site through the body's natural orifices or tiny incisions, under the guidance and monitoring of medical imaging equipment such as digital subtraction angiography, CT, ultrasound, and MRI.

[0004] Interventional therapy includes two categories: interventional but non-implantable and implantable. Implantable refers to the delivery and release of an implant (e.g., a vascular stent, cardiac occluder, etc.) to a target site (e.g., a blood vessel, heart, etc.) via a delivery device. The delivery device typically includes a delivery sheath and a pusher. The pusher is detachably connected to the implant and can be axially movably housed within the delivery sheath to contain the implant. Upon reaching the target site, the implant is pushed out of the delivery sheath and released at the target site. Finally, the connection between the pusher and the implant is released, and the pusher and delivery sheath are withdrawn from the body, completing the procedure.

[0005] To achieve a detachable connection between the implant and the delivery device, a connection mechanism is typically required. This connection mechanism should meet the following requirements: 1) easy connection, enabling quick connection between the implant and the delivery device; 2) reliable connection with the implant, preventing premature or inaccurate release; and 3) easy release, allowing for quick disengagement when the implant needs to be released. Summary of the Invention

[0006] Therefore, it is necessary to provide a connection device that can reliably connect to the implant and is convenient to connect and disconnect.

[0007] Furthermore, a conveyor and conveying system using the above-described connecting device are provided.

[0008] A connecting device for connecting an implant in a delivery unit includes: a plurality of connectors, a plurality of locking members, and a plurality of driving limiting members, wherein the plurality of locking members are configured in a one-to-one correspondence with the plurality of connectors, the plurality of driving limiting members are configured in a one-to-one correspondence with the plurality of locking members, and the plurality of connectors are configured in a one-to-one correspondence with the plurality of driving limiting members.

[0009] Each connector has a locking groove at its distal end. When the locking groove is in the locked state and the driving limiting member is relatively stationary with respect to the corresponding connector, under the action of an external force, each locking member can independently slide along the axial direction of the corresponding connector in a first direction to open the locking groove. When the external force disappears, the corresponding driving limiting member drives the locking member to slide along the axial direction of the connector in a second direction opposite to the first direction to lock the locking groove, and the locking member is limited by the corresponding driving limiting member in the first and second directions.

[0010] When the plurality of driving limiting members can be acted simultaneously and moved along the plurality of connecting members in the first direction, they can simultaneously drive the plurality of locking members to slide along the plurality of connecting members in the first direction to open the locking groove.

[0011] When using the above-described connecting device, each locking member can be applied force independently, causing each locking member to slide independently along the axial direction of the corresponding connector in a first direction to open the locking groove, allowing the implant's connecting structure to extend into the locking groove. When the external force disappears, the corresponding drive limiter automatically drives the locking member to slide along the axial direction of the connector in a second direction to close the locking groove. The locking member is also limited by the corresponding drive limiter, preventing the locking groove from being unintentionally opened and causing detachment, thus achieving a reliable connection between the implant and the connector. Because each locking member and its corresponding drive limiter can operate independently, the locking groove can be locked immediately after each connection between the implant's connecting structure and the connector is completed, without having to wait until all connecting structures and connectors are connected before operating all the locking members to lock all the locking grooves. Thus, when multiple connectors are sequentially connected to multiple connecting structures of the implant, previously connected connecting structures and connectors can be prevented from detaching. Therefore, the connection can be completed in one step, without detachment requiring reconnection. Furthermore, during installation, once the external force disappears, the corresponding drive limit component automatically drives the locking component to slide and close the locking groove, making installation relatively convenient.

[0012] When release is required, multiple drive limiting members can simultaneously drive multiple locking members to slide along multiple connectors in the first direction to open all locking slots, which can simultaneously detach multiple connection structures of the implant from multiple connectors, making release relatively convenient.

[0013] A connection device for connecting an implant in a delivery system, comprising:

[0014] Multiple connectors, each connector having a locking groove at its distal end, and each connector having a guide rail, the guide rail including an axially extending guide rail and a radial protrusion communicating with the guide rail;

[0015] Multiple locking components correspond one-to-one with the multiple connecting components. Each locking component is sleeved on the corresponding connecting component, and each locking component is provided with a slide rail that extends obliquely along the axial direction of the locking component.

[0016] Multiple driving limiting components correspond one-to-one with the multiple locking components, and the multiple connecting components also correspond one-to-one. The distal end of each driving limiting component is radially inserted through the slide rail of the corresponding locking component, and the proximal end extends along the axial direction of the corresponding connecting component.

[0017] When the locking groove is in the locked state, the distal end face of the driving limiting member is located at the distal end of the distal end face of the radial protrusion, and the proximal end inner wall of the driving limiting member and the slide rail abuts against the proximal end of the locking member. The locking groove cooperates with the driving limiting member to limit the locking member in the first and second axially opposite directions.

[0018] When the driving limiting member moves in the first direction until the far end of the driving limiting member is aligned radially with the radial protrusion, the locking member is slid in the first direction by an external force to open the locking groove. When the external force disappears, the corresponding driving limiting member drives the locking member to slide in the second direction opposite to the first direction to lock the locking groove.

[0019] When the plurality of driving limiting members can be acted simultaneously and moved along the plurality of connecting members in the first direction, they can simultaneously drive the plurality of locking members to slide along the plurality of connecting members in the first direction to open the locking groove.

[0020] During the use of the aforementioned connecting device, multiple driving limiting members are simultaneously pulled during loading to align their distal ends radially with their corresponding radial protrusions. Then, each member individually acts on a locking member, causing it to slide in a first direction to open the locking groove and connect with the implant. After release, the driving limiting member automatically drives the locking member to slide in a second direction to lock the locking groove, completing the loading process. Because each locking member and its corresponding driving limiting member can operate independently, multiple connectors are sequentially connected to multiple connection structures of the implant. This prevents previously connected structures from detaching when multiple connectors are sequentially connected to multiple connection structures, allowing for a one-time connection without the need for reconnection. Furthermore, it can be operated by a single person, making connection convenient. When it is necessary to release the implant, pulling multiple driving limiting members in the first direction simultaneously opens the locking groove, making release convenient.

[0021] Furthermore, when the locking groove is in the locked state, the locking groove cooperates with the drive limiting member to limit the locking member in the first and second axial directions, thereby improving the reliability of the connection. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention, 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] in:

[0024] Figure 1 This is a schematic diagram of the structure of a conveying system according to one embodiment;

[0025] Figure 2 This is a schematic diagram of the connection structure of an implant according to one embodiment;

[0026] Figure 3 This is a schematic diagram of the structure of a conveyor according to one embodiment;

[0027] Figure 4 This is a schematic diagram of the structure of a connection device according to one embodiment;

[0028] Figure 5 This is a three-dimensional structural diagram of the connector of a connecting device according to one embodiment;

[0029] Figure 6 This is a partial planar structural schematic diagram of a connector according to one embodiment;

[0030] Figure 7 for Figure 6 A magnified view of a portion of the image;

[0031] Figure 8 This is a schematic diagram of the locking slot in the open state during the loading stage of a connecting device according to an embodiment;

[0032] Figure 9 This is a schematic diagram of the locking slot in the open state during the release phase of a connecting device according to an embodiment;

[0033] Figure 10 This is a schematic diagram of the structure of a drive limiting member in its natural state according to an embodiment;

[0034] Figure 11 for Figure 10 The diagram shows the state in which the drive limiting component is radially expanded.

[0035] Figure 12 This is a schematic diagram of the structure of the drive limiting member according to another embodiment;

[0036] Figure 13 A schematic diagram of the drive limiting member in its natural state according to another embodiment;

[0037] Figure 14 For inclusion Figure 13 The diagram shows the structure of the connecting device of the drive limiting member in the locked state of the locking groove;

[0038] Figure 15 To and Figure 13 The diagram shows the structure of the locking component used in conjunction with the drive limiting component;

[0039] Figure 16 for Figure 14 The diagram shows the connection device in the open state of the locking slot during the loading stage;

[0040] Figure 17 for Figure 14 The diagram shows the locking slot in the open state during the release phase of the connecting device.

[0041] Figure 18 This is a schematic diagram of the connector structure according to another embodiment;

[0042] Figure 19 This is a schematic diagram of the locking component according to another embodiment;

[0043] Figure 20 For inclusion Figure 18 The connectors shown Figure 19 The diagram shows the connection relationship of the locking device when the lock groove is in the locked state.

[0044] Figure 21 To be Figure 20 A schematic diagram of the state of the connecting device after the locking member is radially translated (the relative position in the axial direction remains unchanged);

[0045] Figure 22 for Figure 20 In the connecting device shown, during the loading stage, the locking groove is partially opened, but not to the open state (illustration).

[0046] Figure 23 To be Figure 22 A schematic diagram of the state of the connecting device after the locking member is radially translated (the relative position in the axial direction remains unchanged);

[0047] Figure 24 for Figure 20 The diagram shows the connection device in which the locking groove is fully open during the loading stage.

[0048] Figure 25 To be Figure 24 A schematic diagram of the state of the connecting device after the locking member is radially translated (the relative position in the axial direction remains unchanged);

[0049] Figure 26 for Figure 20The diagram shows the locking slot being fully open during the release phase of the connecting device.

[0050] Figure 27 To be Figure 26 A schematic diagram of the state of the connecting device after the locking member is radially translated (the relative position in the axial direction remains unchanged);

[0051] Figure 28 This is a schematic diagram of the locking component according to another embodiment;

[0052] Figure 29 This is a schematic diagram of the locking component according to yet another embodiment;

[0053] Figure 30 This is a schematic diagram of the locking component in another embodiment. Detailed Implementation

[0054] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0055] In the description of the embodiments of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element 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 on the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0056] 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, they can refer to a fixed connection, a replaceable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0057] In the field of interventional medical devices, the end of a medical device implanted in the human or animal body that is closer to the operator is generally called the "proximal end," and the end that is farther from the operator is called the "distal end." Based on this principle, the "proximal end" and "distal end" of any component of a medical device are defined. "Axial direction" generally refers to the length of the medical device during delivery, while "radial direction" generally refers to the direction of the medical device that is not parallel to its "axial direction." Based on this principle, the "axial direction" and "radial direction" of any component of a medical device are defined. "Circumferential direction" refers to the circumferential direction, that is, the axial direction surrounding a tubular structure or cylinder.

[0058] Please see Figure 1 One embodiment of the delivery system 100 includes an implant 1 and a delivery device 2, the delivery device 2 being used to deliver and release the implant 1 to a target site.

[0059] The implant 1 includes an expandable body 10 and a plurality of connecting structures 30 connected to the expandable body 10. The plurality of connecting structures 30 are distributed circumferentially at intervals along the expandable body 10. The implant 1 can be a valve prosthesis, a vena cava filter, a vascular stent, an occluder, or other device that can be implanted into a target object (e.g., a human or other animal).

[0060] Please see Figure 2 In one embodiment, the connection structure 30 includes a connecting portion 310 and a hook portion 320. One end of the connecting portion 310 is connected to the expandable body 10, and the other end is connected to the hook portion 320. The radial dimension W1 of the hook portion 320 is larger than the radial dimension W2 of the connecting portion 310.

[0061] Please see Figure 3 In one embodiment, the delivery device 2 includes an inner tube 20, a connecting device 40, and an outer tube 60. The connecting device 40 is connected to the inner tube 20 and is used to detachably connect the implant 1. The outer tube 60 is movably sleeved on the inner tube 20 and the connecting device 40 to accommodate the implant 1 in a radially compressed state. After reaching the target site, the outer tube 60 is retracted to allow part of the implant 1 to expand radially. When the connection between the implant 1 and the connecting device 40 is released, the implant 1 is released at the target site.

[0062] In one embodiment, a guide head 210 is provided at the distal end of the inner tube 20 to guide the delivery device 2 into the body.

[0063] Please see Figure 4 The connecting device 40 includes multiple connectors 410, multiple locking members 420, and multiple drive limiting members 430. The multiple locking members 420 correspond one-to-one with and are connected to the multiple connectors 410, the multiple drive limiting members 430 correspond one-to-one with and are connected to the multiple locking members 420, and the multiple drive limiting members 430 correspond one-to-one with and are connected to the multiple connectors 410.

[0064] Please see Figure 5 The connector 410 is generally cylindrical in shape. The connector 410 includes a body 411, with a locking groove 412 at its distal end. When the implant 1 is to be connected to the connector 410, the connecting structure 30 portion of the implant 1 extends into the locking groove 412, and the connecting structure 30 and the locking groove 412 hook axially to prevent the connecting structure 30 from detaching axially. The connector 410 has an internal cavity (not shown).

[0065] Please refer to the following: Figures 5-7 In one embodiment, the locking groove 412 includes a groove bottom 4121, a pushing surface 4122, and a separating surface 4123. The pushing surface 4122 and the separating surface 4123 are located on opposite axial sides of the groove bottom 4121, and the separating surface 4123 is located at the distal end of the pushing surface 4122. The pushing surface 4122 and the separating surface 4123 are spaced apart by a certain distance, so that the locking groove 412 has sufficient accommodating space to accommodate the extended portion of the connecting structure 30.

[0066] In one embodiment, the groove bottom 4121 is parallel to the longitudinal central axis of the connector 410, and the pushing surface 4122 forms a first angle A with the groove bottom 4121, the first angle A ranging from 80° to 100°, to prevent the connecting structure 30 from sliding proximally and sliding out of the locking groove 4121 along the pushing surface 4122. The separating surface 4123 forms a second angle B with the groove bottom 4121, the second angle B ranging from 30° to 60°, to prevent the separating surface 4123 from hooking onto the connecting structure 30 during the release of the implant 1, thus preventing release difficulties. Therefore, the selection of the size range of the first angle A and the second angle B is beneficial to the loading and release of the implant 1.

[0067] like Figure 5 As shown, each connector 410 also has a mounting hole 414 at its distal end. The mounting hole 414 is located at the distal end of the lock groove 412 and penetrates the side wall of the connector 410 and communicates with the lock groove 412 and the inner cavity of the connector 410.

[0068] Please combine Figure 2 , Figure 5 and Figure 7When the connecting structure 30 is connected to the connector 410, the connecting part 310 of the connecting structure 30 enters the locking groove 412 from the mounting hole 414, and the hook part 320 is located in the locking groove 412. Since W1 is greater than W2, the pushing surface 4122 and the separating surface 4123 limit the hook part 320 in the axial direction. The connecting structure 30, including the connecting part 310 and the hook part 320, cooperates with the locking groove 412 and the mounting hole 414, and the connection reliability is high, which can prevent the implant 1 from falling off in the axial direction. At the same time, it can also prevent the implant 1 from shifting in the axial direction and affecting the accuracy of the release position. Furthermore, it is beneficial to improve the smoothness of release. When the locking groove 412 is in the open state, the connecting structure 30 is radially ejected from the opening of the locking groove 412.

[0069] Understandably, in other embodiments, the connecting structure 30 may be in other forms, such as a collar structure, which is fitted onto the far end of the connector 410, and when the locking groove 412 is in a locked state, the collar structure is limited by the locking member 420.

[0070] Please return Figure 4 In one embodiment, the locking member 420 is a sleeve structure. The locking member 420 is slidably sleeved on the corresponding connecting member 410. When subjected to external force, each locking member 420 can independently slide along the axial direction of the connecting member 410. When the locking member 420 slides to cover the locking groove 412, the locking groove 412 is in a locked state; when the locking member 420 slides to expose the locking groove 412, the locking groove 412 is in an open state. Figure 4 As shown, when the locking groove 412 is in the locked state, the driving limiting member 430 abuts or hooks with the locking member 420 to form an axial limit on the locking member 420.

[0071] When the connecting device 40 is in such a state Figure 4 In the state shown, where the locking member 420 completely covers the locking groove 412 and the locking groove 412 is in a locked state, in order to connect with the implant 1, while keeping the driving limit member 430 and the connecting member 410 relatively stationary, firstly, the locking member 420 is pulled in the first direction F1, causing the locking member 420 to slide along the axial direction of the connecting member 410 in the first direction F1 to open the locking groove 412, as shown. Figure 8 As shown; then, the hook portion 320 and at least part of the connecting portion 310 of the connecting structure 30 are inserted into the locking groove 412; next, the locking member 420 is released, and the driving limit member 430 automatically drives the locking member 420 to slide along the axial direction of the connecting member 410 in the second direction F2 to the position covering the locking groove 412 to lock the locking groove 412 and lock the connection between the implant 1 and the connecting member 410, that is, the connecting device 40 returns to the original position. Figure 4The state is shown. Since the driving limiting member 430 and the corresponding locking member 420 are hooked on opposite sides in the axial direction, when the locking member 420 slides in the second direction F2 until it completely covers the locking groove 412, the locking member 420 is simultaneously limited by the driving limiting member 430 in the first direction F1 and the second direction F2. This prevents the locking member 420 from continuing to slide in the second direction F2 and slipping off the connecting member 410, and also prevents it from sliding in the first direction F1 when no external force is applied. Therefore, when no external force is applied, the locking member 420 remains in the position covering the locking groove 412, keeping the locking groove 412 in a locked state, thus ensuring reliable connection with the implant 1.

[0072] Furthermore, since each locking member 420 and its corresponding driving limit member 430 can operate independently, the locking groove 412 can be locked immediately after each connection structure 30 of the implant 1 is connected to the connector 410, without having to wait until all the connection structures 30 and connectors 410 are connected before operating all the locking members 420 to close all the locking grooves 412. Thus, when multiple connectors 410 are sequentially connected to multiple connection structures 30 of the implant 1, previously connected connection structures 30 and connectors 410 can be prevented from detaching. Therefore, the connection can be completed in one step without detachment requiring reconnection. Furthermore, during installation, after the external force disappears, the corresponding driving limit member 430 automatically drives the locking member 420 to slide in the second direction F2 to lock the locking groove 412, making the connection more convenient.

[0073] When it is necessary to release the connector 410 and the connecting structure 30, multiple driving limit members 430 are pulled in the first direction F1 at the same time, so as to drive multiple locking members 420 to slide in the first direction F1 along the axial direction of multiple connectors 410 and open all locking slots 412 at the same time, thereby releasing multiple connectors 410 and multiple connecting structures 30 at the same time, thereby realizing the release of implant 1.

[0074] By pulling the limiting member 430 to open the locking groove 412, as follows Figure 9 As shown. Comparison Figure 8 and Figure 9 The lock slot 412 can be opened smoothly by directly pulling the locking member 420 to slide it open, or by pulling the driving limit member 430 to slide the locking member 420 to open the lock slot 412. That is, the connection and release are relatively convenient.

[0075] It should be noted that the term "locked" in this document includes both completely closed and partially closed (i.e., the opening of the lock groove 412 is partially obstructed), as long as the connecting structure 30 cannot be disengaged from the lock groove 412. A situation where the lock groove 412 is partially closed but the connecting structure 30 can be disengaged from it is not considered a "locked" state. Similarly, the term "open" in this document includes both completely open (i.e., the opening of the lock groove 412 is unobstructed) and partially open (i.e., the lock groove 412 is partially obstructed), as long as the connecting structure 30 can detach from the lock groove 412. A situation where the lock groove 412 is partially open but the connecting structure 30 cannot detach from it is not considered an "open" state.

[0076] Multiple connectors 410 and multiple connecting structures 30 are simultaneously released, resulting in better coaxiality of the implant 1 at the implantation site, that is, the implant 1 does not deflect or become eccentric at the implantation site.

[0077] In one embodiment, the driving limiting member 430 has shape memory characteristics or elasticity. When the locking member 420 is subjected to an external force and slides along the axial direction of the corresponding connecting member 410 in the first direction F1, the locking member 420 acts on the driving limiting member 430, causing the driving limiting member 430 to deform. When the external force disappears, the driving limiting member 430 restores its deformation and drives the locking member 420 to slide along the second direction F2.

[0078] Please return Figure 4 One end of the driving limiting member 430 extends into the inner cavity of the connector 410 and extends proximally along the axial direction of the connector 410 before extending to the outside of the connector 410. When the locking groove 412 is in the locked state, the other end of the driving limiting member 430 abuts against the locking member 420, and the driving limiting member 430 has a first abutting portion 431 and abutting portion 432 that abut against the locking member 420. The first abutting portion 431 and the second abutting portion 432 are axially opposite each other. The first abutting portion 431 is located proximally to the second abutting portion 432.

[0079] The first abutting part 431 abuts against the locking member 420, so that when the locking member 420 is not subjected to external force, the first abutting part 431 abuts the locking member 420 against the position covering the locking groove 412, so that the locking groove 412 remains locked, thereby preventing the connecting structure 30 and the connecting member 410 from disengaging prematurely.

[0080] The second abutting part 432 abuts against the locking member 420, so that when it is necessary to release the implant 1, pulling the limiting member 430 in the first direction F1 can drive the locking member 420 to slide in the first direction F1 along the axial direction of the connecting member 410, thereby opening the locking groove 412 and releasing the implant 1.

[0081] Please see Figure 10 The drive limiting member 430 is generally a linear structure. In one embodiment, the drive limiting member 430 includes a drive segment 433, a limiting segment 434, a deformation segment 435, and a tension segment 436 connected in sequence from far to near.

[0082] In this embodiment, the driving segment 433 is a straight segment, the limiting segment 434 is an arc-shaped segment, and the deformation segment 435 and the tension segment 436 are both straight segments. Specifically, in its natural state, the driving segment 433 extends perpendicular to the longitudinal central axis of the connector 410; the limiting segment 434 extends radially outward from its end connected to the driving segment 433 and then bends radially inward; the tension segment 436 extends axially; and the deformation segment 435 tilts from its end connected to the limiting segment 434 toward the tension segment 436.

[0083] In one embodiment, there are two driving segments 433, two limiting segments 434, two deformation segments 435, and two pulling segments 436. One end of each driving segment 433, away from its corresponding limiting segment 434, is connected to one end of the other driving segment 433, also away from its corresponding limiting segment 434. The connection method is one known to those skilled in the art, including but not limited to welding and bonding. Alternatively, the two driving segments 433, two limiting segments 434, two deformation segments 435, and two pulling segments 436 can be a single integrated structure. For example, a wire with shape memory properties or elasticity can be shaped to form the driving limiting component 430. Specifically, a nickel-titanium alloy wire can be shaped to form the driving limiting component 430.

[0084] The first abutting portion 431 of the drive limiting member 430 is located at the intersection of the limiting segment 434 or the deformation segment 435. The second abutting portion 432 is located at the intersection of the drive segment 433 or the limiting segment 434.

[0085] Please return Figure 4 A slide rail 421 is provided on the locking member 420. The slide rail 421 extends along the axial direction of the locking member 420. The axial length of the slide rail 421 is less than the axial length of the locking member 420. Furthermore, the distal end of the slide rail 421 is located at the proximal end of the distal end of the locking member 420, and the proximal end of the slide rail 421 is located at the distal end of the proximal end of the locking member 420. Please return Figure 5 The connector 410 has a guide rail 413 on its body 411, which extends along the axial direction of the body 411. The guide rail 413 is located at the proximal end of the locking groove 412, and the proximal end of the guide rail 413 is located at the distal end of the proximal end of the body 411. The guide rail 413 is a through hole that penetrates the side wall of the body 411.

[0086] Please continue reading. Figure 4When the locking member 420 is sleeved on the connector 410 and the locking groove 412 is in the locked state, the slide rail 421 of each locking member 420 is axially opposite to the guide rail 413 of the corresponding connector 410, and the slide rail 421 and the guide rail 413 are at least partially radially opposite.

[0087] Please combine Figure 4 and Figure 10 The end of the driving section 433 of the driving limiting member 430 away from the corresponding limiting section 434 extends into the slide rail 421. The deformation section 435 away from the corresponding limiting section 434 extends from the guide rail 413 into the inner cavity of the connector 410. The pulling section 436 extends into the inner cavity of the connector 410 and extends axially towards the proximal end before extending out to the outside of the connector 410.

[0088] In one embodiment, the first abutting portion 431 abuts against the proximal end of the locking member 420, and the second abutting portion 432 abuts against the proximal inner wall of the slide rail 421.

[0089] In another embodiment, such as Figure 4 As shown, the locking member 420 has a recessed hole 422 that penetrates the side wall of the locking member 420. The recessed hole 422 is located near the end of the slide rail 421, and the recessed hole 422 and the slide rail 421 extend along the same straight line, but the recessed hole 422 and the slide rail 421 are not axially connected. The recessed hole 422 extends axially from one end near the slide rail 421 to the near end of the locking member 420. The recessed hole 422 is a U-shaped recessed hole, and the opening of the U-shaped recessed hole is located near the near end of the locking member 420.

[0090] The first abutting part 431 of the drive limiting member 430 abuts against the bottom wall (i.e. the bottom of the U-shape) of the clearance hole 422, and the second abutting part 432 abuts against the proximal inner wall of the slide rail 421.

[0091] In one embodiment, when there are two driving sections 433, two limiting sections 434, two deformation sections 435, and two pulling sections 436, there are two slide rails 421, located on opposite radial sides of the longitudinal central axis of the locking member 420. There are also two guide rails 413, located on opposite radial sides of the longitudinal central axis of the connecting member 410. Each slide rail 421 corresponds to one guide rail 413. Two driving sections 433 are respectively configured corresponding to the two slide rails 421, two limiting sections 434 are respectively configured corresponding to the two slide rails 421, and two deformation sections 435 are respectively configured corresponding to the two guide rails 413.

[0092] One end of each of the two drive segments 433 that is away from the corresponding limit segment 434 extends into the two slide rails 421 and is connected; or, one end of each of the two drive segments 433 that is away from the corresponding limit segment 434 extends into the two slide rails 421 but is not connected.

[0093] Understandably, when the ends of the two drive segments 433 that are away from the corresponding limiting segments 434 extend into the two slide rails 421 and are connected, the slide rails 421 are through-hole structures, that is, the slide rails 421 penetrate the side wall of the locking member 420 in the radial direction, and the ends of each drive segment 433 that are away from the limiting segments 434 pass through the slide rails 421 and the guide rails 413 in the radial direction in sequence, and the connecting ends of the two drive segments 433 are located in the inner cavity of the connecting member 410.

[0094] In such Figure 4 In the state shown, the drive limiter 430 is in its natural state, i.e. Figure 10 The state shown. In this state, the radial distance between the ends of the two deformable segments 435 connected to the corresponding tensioning segment 436 is less than the radial distance between the ends of the two deformable segments 435 away from the tensioning segment 436.

[0095] When connection with implant 1 is required, while keeping the drive limiting member 430 and the connector 410 relatively stationary, the locking member 420 is directly acted upon, causing the locking member 420 to slide along the connector 410 in the first direction F1 to open the locking groove 412. During the sliding of the locking member 420 in the first direction F1, the locking member 420 acts on the drive limiting member 430, increasing the radial distance between the ends of the two deformable segments 435 of the drive limiting member 430 connected to the corresponding traction segments 436, i.e., causing the two deformable segments 435 to deform. When the position of the locking member 420 corresponds to the open state of the locking groove 412, the two deformable segments 435 are radially opened, such as... Figure 11 As shown. After the connecting structure 30 of the implant 1 is inserted into the locking groove 412, the force on the locking member 420 is released, and the driving limiting member 430 is driven from... Figure 11 The state has been restored to Figure 10 The locking member 420 is driven to move in the second direction F2 to lock the locking groove 412 in the state shown.

[0096] In another embodiment, the ends of the two drive segments 433 that are away from the corresponding limiting segments 434 extend into the two slide rails 421 and are located inside the locking member 420. The ends of the two drive segments 433 that are away from the corresponding limiting segments 434 are not connected. Furthermore, as... Figure 12 As shown, each drive segment 433 has a limiting portion 437 at one end away from the limiting segment 434. The limiting portion 437 is located inside the locking member 420, and the radial dimension of the limiting portion 437 is larger than the width of the slide rail 421 to prevent the drive limiting member 430 from falling out of the locking member 420. In this embodiment, the limiting portion 437 is a spherical structure. It can be understood that in other embodiments, the limiting portion 437 is not limited to a spherical structure, and other structures that can prevent the drive limiting member 430 from disengaging from the locking member 420 are also acceptable.

[0097] It should be noted that when the ends of the two drive segments 433 furthest from the corresponding limiting segments 434 are not connected, in the natural state, the connection method between each deformable segment 435 and the corresponding limiting segment 434 and the pulling segment 436 is the same as when the ends of the two drive segments 433 furthest from the corresponding limiting segments 434 are connected. That is, each deformable segment 435 tilts from the end connected to the corresponding limiting segment 434 toward the corresponding pulling segment 436. When the locking groove 412 is in the open state, the two deformable segments 435 are radially spread apart; during the process of the two deformable segments 435 returning from the radially spread state to the initial state, the driving locking member 420 slides in the second direction F2.

[0098] In another embodiment, regardless of whether the ends of the two corresponding driving segments 433 that are away from the corresponding limiting segment 434 are connected, the ends of the two pulling segments 436 that are away from the deformation segment 435 may or may not be connected.

[0099] It should also be noted that in other embodiments, the drive limiting member 430 may include only one drive segment 433, one limiting segment 434, one deformation segment 435, and one tension segment 436. For example, Figure 12 The structure shown constitutes a complete drive limiting element 430. Correspondingly, there is also one slide rail 421 and one guide rail 413.

[0100] Please see Figure 13 In another embodiment, the drive limiting member 430 includes a deformable segment 437, two transition segments 438, and two tension segments 439. The two transition segments 438 are respectively connected to both ends of the deformable segment 437, and the two tension segments 439 are respectively connected to the ends of the two transition segments 438 furthest from the deformable segment 437. The deformable segment 437 extends generally radially. Please refer to [further details omitted]. Figure 14 In its natural state, the deformable segment 437 is partially located outside the connector 410 and partially located within the connector 410. The deformable segment 437 is an arc-shaped bent rod, having a first bent portion 4371 located in the middle and two second bent portions 4372 respectively connected to both ends of the first bent portion 4371. The first bent portion 4371 is located within the inner cavity of the connector 410. Two tension segments 439 extend axially proximally within the inner cavity of the connector 410 and extend to the outside of the connector 410. Each transition segment 438 is inclined from the end connected to the deformable segment 437 towards the tension segment 439. In its natural state, the radial distance between the ends of the two transition segments 438 closest to the tension segment 439 is smaller than the radial distance between the ends furthest from the tension segment 439.

[0101] Please see Figure 15In one embodiment, a groove 423 is formed on the inner wall of the locking member 420. The opening of the groove 423 faces the longitudinal central axis of the locking member 420. In one embodiment, the groove 423 is a strip-shaped groove with a depth that gradually decreases from the proximal end to the distal end, and there are two grooves 423, which are symmetrical about the longitudinal central axis of the locking member 420. In another embodiment, the groove 423 is an annular groove, and the depth of the groove 423 gradually decreases from the proximal end to the distal end.

[0102] Please return Figure 14 The locking member 420 is sleeved on the connecting member 410 and the drive limiting member 430. When the locking groove 412 is covered by the locking member 420 and is in the locked state, the two second curved portions 4372 of the drive limiting member 430 abut against the bottom of the groove 423 at the proximal end.

[0103] While keeping the connecting member 410 and the driving limit member 430 relatively stationary, the locking member 420 is acted upon, causing the locking member 420 to slide along the connecting member 410 in the first direction F1, thereby opening the locking groove 412. Figure 16 As shown, in this state, the two second curved portions 4372 of the drive limiting member 430 abut against the bottom of the groove 423 at its distal end. Since the groove depth of the groove 423 gradually decreases from the proximal end to the distal end, relative to... Figure 14 When the locking groove 412 is locked, the drive limiting member 430 is in the following state: at this time, the deformable section 437 of the drive limiting member 430 is radially compressed, and the first bent portion 4371 and the two second bent portions 4372 are further bent. In this state, the connecting structure 30 of the implant 1 is connected to the connector 410. Then, the locking member 420 is released, the deformable section 437 returns to its deformed state, and the locking member 420 is driven to slide along the connector 410 in the second direction F2 to lock the locking groove 412. That is, the connection state of the connector 410, the locking member 420 and the drive limiting member 430 returns to normal. Figure 14 The state shown.

[0104] When the implant 1 is to be released, the drive limiting member 430 is pulled in the first direction F1. The two second curved portions 4372 of the drive limiting member 430 abut against the bottom of the groove 423, and the deformed section 437 is abutted by the proximal sidewall of the groove 423, so that the drive limiting member 430 can drive the locking member 420 to slide in the first direction F1, thereby opening the locking groove 412. Figure 17 As shown. Thus, implant 1 can be released.

[0105] It should be noted that, Figure 13 In the embodiment shown, the number of traction segments 439 can be only one, and one traction segment 439 is simultaneously connected to the end of the two transition segments 438 that is away from the deformation segment 437.

[0106] Please return Figure 4 In one embodiment, both the guide rail 413 and the slide rail 421 are strip-shaped structures. In another embodiment, the guide rail 413 includes a strip-shaped rail and a semi-circular portion located at the distal end of the strip-shaped rail. The slide rail 421 includes a strip-shaped portion and a semi-circular portion located at the proximal end of the strip-shaped portion. The drive limiting member 430 is formed by shaping a metal wire with a circular cross-section. Semi-circular portions are respectively provided at the distal end of the guide rail 413 and the proximal end of the slide rail 421. The diameter of the cross-section of the drive limiting member 430 is adapted to the diameter of the semi-circular portion and the bottom size of the clearance hole 422, so that the limiting section 434 and the driving section 433 of the drive limiting member 430 can abut well with the connecting member 410 and the locking member 420. During the release process, the locking member 420 can be smoothly pulled to smoothly open the locking groove 412. During the transportation process, the locking member 420 can be well limited, so that the implant 1 is reliably connected to the connecting device 40.

[0107] Please see Figure 18 In one embodiment, the guide rail 413 includes an axially extending guide rail 4131 and a radially extending protrusion 4132 communicating with the guide rail 4131, wherein the distance between the distal end of the radially extending protrusion 4132 and the distal end of the guide rail 4131 is greater than zero. The guide rail 4131 includes a strip rail and two semicircular portions located at both ends of the strip rail. The radially extending protrusion 4132 includes a rectangular portion connected to the strip rail of the guide rail 4131 and extending radially, and a semicircular portion connected to the end of the rectangular portion away from the strip rail.

[0108] Please see Figure 19 The slide rail 421 extends obliquely along the axial direction. The slide rail 421 has a distal end 421A and a proximal end 421B. The projection of the distal end 421A onto the plane containing the proximal end 421B and perpendicular to the longitudinal central axis of the locking member 420 does not coincide with the proximal end 421B. In this embodiment, the slide rail 421 includes a strip-shaped portion extending obliquely along the axial direction and two semicircular portions located at opposite ends of the strip-shaped portion. The distal end of the semicircular portion located at the distal end is the distal end 421A, and the proximal end of the semicircular portion located at the proximal end is the proximal end 421B.

[0109] Please see Figure 20 When the locking groove 412 is in the locked state, the drive limiting member 430 abuts against the inner wall of the proximal end of the slide rail 421, that is, against the arc-shaped inner wall of the semicircular portion located at the proximal end. Please refer to Figure 18 , Figure 20 and Figure 21The radial protrusion 4132 of the guide rail 413 is located at the proximal end of the proximal end face of the locking member 420. That is, in this state, the radial protrusion 4132 is not covered by the locking member 420. At this time, the distal end face of the drive limiting member 430 is located at the distal end of the distal end of the radial protrusion 4132. That is, the drive segment 433 is located axially at the distal end of the radial protrusion 4132.

[0110] In this state, when the drive limiting member 430 and the connecting member 410 remain relatively stationary, since the projection of the distal end 421A of the slide rail 421 onto the plane where the proximal end 421B is located and which is perpendicular to the longitudinal central axis of the locking member 420 does not coincide with the proximal end 421B, the slide rail 421 cooperates with the drive limiting member 430 to form a double limit on the locking member 420. Figure 20 In the state shown, the locking member 420 cannot be slid in the first direction F1 to open the lock groove 412.

[0111] When the locking slot 412 is to be opened to connect the implant 1, the driving limiting member 430 is first pulled in the first direction F1 to move the driving limiting member 430 axially relative to the connecting member 410. Under the drive of the driving limiting member 430, the locking member 420 slides in the first direction F1. Please refer to the following: Figure 22 and Figure 23 When the locking member 420 slides to cover the radial protrusion 4132, and the driving segment 433 of the driving limit member 430 is aligned radially with the radial protrusion 4132, such that the driving segment 433 can enter the radial protrusion 4132 under force, the pulling of the driving limit member 430 stops. At this time, part of the locking groove 412 is exposed, but the degree of opening of the locking groove 412 is small and does not reach the open state.

[0112] Furthermore, maintaining the relative positions of the drive limiting member 430 and the connecting member 410 at this moment, a force is applied to the locking member 420 to pull the locking member 420 in the first direction F1. Since the driving segment 433 of the drive limiting member 430 is aligned radially with the radial protrusion 4132 at this time, the locking member 420, during its sliding in the first direction F1, acts on the driving segment 433, causing the driving segment 433 to enter the radial protrusion 4132, thereby overcoming the limiting effect of the drive limiting member 430 and allowing it to slide along the connecting member 410 in the first direction F1 to open the locking groove 412. Figure 24 and Figure 25 As shown.

[0113] exist Figure 24 In the indicated state, the locking slot 412 is in the open state, connecting the implant 1 to the connector 410. Then, the locking member 420 is released, the driving limit member 430 is reset, and the driving locking member 420 slides in the second direction F2. When it slides to... Figure 22In the indicated state, sliding in the second direction F2 cannot continue. At this time, although the locking groove 412 is not completely closed, the degree of partial closure is sufficient to prevent the implant 1 from detaching from the connector 410. That is, the locking groove 412 is in a locked state. Therefore, when multiple connectors 410 are sequentially connected to the multiple connecting structures 30 of the implant 1, the previously connected connecting structures 30 can be prevented from detaching from the connectors 410. Thus, the connection can be completed in one step without detachment requiring reconnection. Furthermore, it can be operated independently by a single person, making the connection relatively convenient.

[0114] Finally, to completely close the lock groove 412, multiple drive limiting members 430 are pushed in the second direction F2. Since the first abutting part 431 abuts against the locking member 420, the multiple drive limiting members 430 respectively drive the multiple locking members 420 to slide in the second direction F2 until the locking members 420 completely cover the lock groove 412, returning to the previous state. Figure 20 The state shown.

[0115] When the implant 1 is to be released, multiple drive limiting members 430 are simultaneously pulled in the first direction F1, thereby driving multiple locking members 420 to slide simultaneously in the first direction F1, thus simultaneously opening multiple locking slots 412, such as... Figure 26 and Figure 27 As shown. Thus, multiple connection structures 30 of the implant 1 are released simultaneously.

[0116] The slide rail 421, which extends axially and whose projection on the plane where its distal end 421A is located and is perpendicular to the longitudinal central axis of the locking member 420 does not coincide with the proximal end 421B, cooperates with the guide rail 413, which includes the guide rail 4131 and the radial protrusion 4132. This allows the drive limiting member 430 to automatically drive the locking member 420 to slide to a position where the locking groove 412 is locked after the connecting structure 30 is at least partially placed in the locking groove 412 and the locking member 420 is released, preventing the connecting structure 30 from falling off. This makes the connection more reliable and convenient. Furthermore, it allows for the simultaneous release of multiple connecting structures 30 and multiple connecting members 410, making release relatively convenient.

[0117] Simultaneously, the cooperation of the slide rail 421 and guide rail 413 ensures that when the locking member 420 is in a state of completely covering the locking groove 412, the locking groove 412 cooperates with the drive limiting member 430 to form a double limit on the locking member 420. Figure 20 In the indicated state, when the drive limiter 430 and the connector 410 remain relatively stationary, the locking member 420 cannot slide in the first direction F1 to open the locking groove 412. This further improves the reliability of the connection and prevents the locking member 420 from sliding in the first direction F1 due to undesirable forces during transport, thus avoiding premature release.

[0118] In other embodiments, the shape of the slide rail 421 is not limited to... Figure 19 The shape shown can be any other shape, satisfying that the projection of the distal end 421A onto the plane where the proximal end 421B is located and which is perpendicular to the longitudinal central axis of the locking member 420 does not coincide with the proximal end 421B; and, when the driving section 433 is radially aligned with the radial protrusion 4132, the locking member 420 can slide along the connecting member 410 in the first direction F1, any other shape of slide rail 421 is acceptable.

[0119] For example, such as Figure 28 and Figure 29 As shown, in other embodiments, the slide rail 421 is an arc-shaped rail, and the center of the circle corresponding to the arc-shaped rail can be located on the left or right side of the arc-shaped rail.

[0120] Please return Figure 21 The axial length of the bottom 4121 of the locking groove 412 is Y1. The axial distance from the connection between the separating surface 4123 and the bottom 4121 to the distal end face of the connector 410 is Y2. The axial distance from the distal end of the strip rail of the guide rail 4131 of the guide rail 413 to the distal end face of the connector 410 is Y3. The axial distance from the center position of the radial protrusion 4132 to the distal end face of the strip rail is Y4. The radial distance from the center position of the guide rail 4131 to the end of the rectangular portion of the radial protrusion 4132 away from the guide rail 4131 is X1.

[0121] The axial length of the strip portion of the slide rail 421 is Y5, the axial distance from the connection portion of the strip portion and the semicircular portion located at the proximal end to the distal end face of the locking member 420 is Y6, and the radial distance from the center of the semicircular portion at the distal end of the slide rail 421 to the proximal end 421B is X2.

[0122] Please combine Figure 20 and Figure 21 When the drive limiting member 430 abuts against the proximal inner wall of the slide rail 421, and the drive segment 433 (not shown) is located at the distal end of the radial protrusion 4132, when Y6 equals Y3, the distal end face of the locking member 420 is flush with the distal end face of the connector 410, and the locking groove 412 is completely covered by the locking member 420. When Y6 > Y3, the distal end face of the locking member 420 is located at the distal end of the distal end face of the connector 410, and the locking groove 412 is completely covered by the locking member 420. Therefore, Y6 ≥ Y3, which is beneficial for a reliable connection between the implant 1 and the connector 410.

[0123] Please combine Figure 22 and Figure 23Y2+Y6>Y3+Y4, such that when the drive limiting member 430 abuts against the proximal inner wall of the slide rail 421, and the drive section 433 and the radial protrusion 4132 are radially aligned, the locking member 420 can cover most of the opening of the locking groove 412 or completely cover the locking groove 412. Even if the locking groove 412 is in the locked state, the connection structure 30 of the implant 1 cannot be disengaged from the connector 410 when the drive section 433 and the radial protrusion 4132 are radially aligned.

[0124] Please combine Figure 24 and 25 Y6-Y5 < Y3+Y4-Y1-Y2, such that when the drive limit member 430 and the connecting member 410 are kept relatively stationary, acting alone on the locking member 420, the locking member 420 is moved from... Figure 22 The state shown is slid towards the first direction F1. Figure 24 When shown, the locking slot 412 is in the fully open state (i.e., the open state with the largest degree of opening), which means that the locking slot 412 can be opened smoothly to facilitate connection with the implant 1.

[0125] Please combine Figure 26 and Figure 27 X1 / X2*Y5+Y4+Y3>Y1+Y2+Y6, such that when the driving limit member 430 is pulled in the first direction F1, the locking member 420 is pulled from... Figure 20 The state shown is slid towards the first direction F1. Figure 26 When shown, the locking slot 412 is in the fully open state (i.e., the open state with the largest degree of opening), which means that the locking slot 412 can be opened smoothly to release the implant 1 smoothly.

[0126] It should be noted that when the locking groove 412 is in the locked state, the locking member 420 can completely cover the axial section of the locking groove 412 of the connecting member 410 in the circumferential direction. For example, as Figure 4 The locking element 420 shown completely covers the axial section where the locking groove 412 is located. In other embodiments, the locking element 420 may only cover the opening of the locking groove 412 in the circumferential direction, without covering the other areas of the axial section where the locking groove 412 is located. For example, as... Figure 15 The locking element 420 shown only covers the opening of the locking groove 412 in the circumferential direction.

[0127] In one embodiment, the locking member 420 is a sleeve structure, and a slide rail 421 is provided on the side wall of the sleeve structure. In another embodiment, the locking member 420 is a sleeve structure with a portion of its area cut off, such as... Figure 15 As shown.

[0128] Please see Figure 30In another embodiment, the locking member 420 includes a cover portion 423 and an extension portion 424 connected to the cover portion 423. The extension portion 424 extends proximally from one end connected to the cover portion 423, and a slide rail 421 is formed on the extension portion 424. The cover portion 423 is an arc-shaped housing used to cover the opening of the locking groove 412. In other embodiments, the cover portion 423 may be a collar structure. In this embodiment, in the locked state, the drive limiting member 430 abuts against the proximal inner wall of the slide rail 421 and the proximal end of the extension portion 424. The number of extension portions 424 corresponds to the number of slide rails 421, and can be two or one.

[0129] Please return Figure 4 In one embodiment, the connection structure 40 further includes a first connection base 440, a second connection base 450, and a drive tube 460.

[0130] The first connecting base 440 is sleeved and fixed on the inner tube 20. The proximal ends of a plurality of connectors 410 are fixedly connected to the first connecting base 440. The plurality of connectors 410 are spaced apart circumferentially along the first connecting base 440.

[0131] The second connecting base 450 is located at the proximal end of the first connecting base 440. The proximal end of the second connecting base 450 is connected to the distal end of the drive tube 460. The second connecting base 450 and the drive tube 460 are movably sleeved on the inner tube 20. The pulling section 436 of the drive limiting member 430 passes through the proximal end of the main body 411 of the corresponding connector 410 and extends axially to the second connecting base 450, and is fixedly connected to the second connecting base 440.

[0132] The first connecting base 440 is provided to facilitate the connection of multiple connectors 410 to the inner tube 20. The outer circle diameter of the multiple connectors 410 is less than or equal to the outer circle diameter of the first connecting base 440 to avoid the radial profile of the conveyor 2 being too large.

[0133] By setting the second connecting base 450 and the driving tube 460, the actions of multiple driving limit members 430 can be adjusted simultaneously by pulling or pushing the driving tube 460, so as to simultaneously release multiple connecting structures 30 of the implant 1 or simultaneously drive multiple locking members 420 to slide in the second direction F2.

[0134] In one embodiment, the opening of the locking groove 412 of each connector 410 faces outward radially. On the one hand, this facilitates connection with the implant 1 and avoids multiple connectors 410 blocking each other during the connection process. On the other hand, it avoids multiple connecting structures 30 interfering with each other during the release process. Thus, the release of multiple connecting structures 30 from their corresponding multiple connectors 410 can proceed smoothly, thereby successfully releasing the implant 1.

[0135] Please return Figure 3 In one embodiment, the conveyor 2 further includes a handle assembly 80. The handle assembly 80 includes a guide rail 810, a movable handle 820, a fixed handle 830, and a release actuator 840.

[0136] The proximal end of the outer tube 60 extends into the guide rail 810, and the movable handle 820 is movably sleeved on the guide rail 810. The movable handle 820 is fixedly connected to the outer tube 60, and the movable handle 820 can slide along the axial direction of the guide rail 810 to drive the outer tube 60 to slide along the axial direction, thereby accommodating the radially compressed implant 1 or releasing the radially compressed implant 1 to a partially radially expanded state.

[0137] The proximal end of the drive tube 460 extends axially and protrudes from the proximal end of the guide rail 810 to connect with the release actuator 840. The release actuator 840 can slide axially in two opposite directions relative to the guide rail 810 to pull or push the drive tube 460, thereby pulling or pushing the drive limiter 430.

[0138] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0139] The above description discloses only preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. Therefore, equivalent variations made in accordance with the claims of the present invention are still within the scope of the present invention.

Claims

1. A connecting device for connecting an implant in a delivery system, characterized in that, include: Multiple connectors, multiple locking components, and multiple drive limiting components are provided, wherein the multiple locking components are configured in a one-to-one correspondence with the multiple connectors, the multiple drive limiting components are configured in a one-to-one correspondence with the multiple locking components, and the multiple connectors are configured in a one-to-one correspondence with the multiple drive limiting components. Each connector has a locking groove at its distal end. When the locking groove is in the locked state and the driving limiting member is relatively stationary with respect to the corresponding connector, under the action of an external force, each locking member can independently slide along the axial direction of the corresponding connector in a first direction to open the locking groove. When the external force disappears, the corresponding driving limiting member drives the locking member to slide along the axial direction of the connector in a second direction opposite to the first direction to lock the locking groove. The locking member is also limited by the corresponding driving limiting member in the first and second directions. The connector has an inner cavity, and each locking member is movably sleeved on the corresponding connector. One end of the driving limiting member extends into the inner cavity of the corresponding connector and extends along the axial direction of the connector to protrude outside the connector. When the locking groove is in the locked state, the other end of the driving limiting member abuts against the locking member, and the driving limiting member and the locking member form a first abutting part and a second abutting part that are axially opposite to each other. When the plurality of driving limiting members can be acted simultaneously and moved along the plurality of connecting members in the first direction, they can simultaneously drive the plurality of locking members to slide along the plurality of connecting members in the first direction to open the locking groove.

2. The connecting device according to claim 1, characterized in that, The driving limiting member has shape memory characteristics or elasticity. When the driving limiting member and the corresponding connecting member are relatively stationary, the driving limiting member deforms during the process of the locking member sliding along the axial direction of the corresponding connecting member in the first direction under the action of external force. When the external force disappears, the driving limiting member restores its deformation and drives the locking member to slide in the second direction.

3. The connecting device according to claim 1, characterized in that, The opening of the locking groove faces the radially outward side of the connector. When the locking member slides to cover the opening in the circumferential direction, the locking groove is in a locked state; when the locking member slides to expose the opening in the circumferential direction, the locking groove is in an open state.

4. The connecting device according to claim 3, characterized in that, The locking groove includes a groove bottom, a pushing surface, and a separating surface. The pushing surface and the separating surface are located on opposite axial sides of the groove bottom, and the separating surface is located at the far end of the pushing surface. The groove bottom is parallel to the longitudinal central axis of the connector. The pushing surface and the groove bottom form a first angle, which ranges from 80° to 100°. The separating surface and the groove bottom form a second angle, which ranges from 30° to 60°.

5. The connecting device according to claim 1, characterized in that, Each of the locking members has a slide rail, and each of the connecting members has a guide rail. When the locking groove is in the locked state, the slide rail and the guide rail are at least partially opposite each other in the radial direction. The driving limiting member includes a driving section, a limiting section, a deformation section, and a pulling section connected in sequence from far to near. The end of the driving section away from the limiting section extends into the slide rail. The end of the deformation section away from the limiting section extends into the inner cavity of the connecting member through the guide rail. The pulling section extends axially in the inner cavity of the connecting member to protrude outside the connecting member. The driving section and the limiting section abut against the locking member to form a first abutting part and a second abutting part that are opposite each other in the axial direction.

6. The connecting device according to claim 5, characterized in that, The number of slide rails and guide rails is two in each case. The two slide rails are located on two radially opposite sides of the longitudinal central axis of the locking member, and the two guide rails are located on two radially opposite sides of the longitudinal central axis of the connecting member. The two slide rails correspond one-to-one with the two guide rails. The number of driving sections, limiting sections, deformation sections, and pulling sections is two in each case. The two limiting sections are respectively set to correspond to the two slide rails, the two deformation sections are respectively set to correspond to the two guide rails, and the two driving sections are respectively set to correspond to the two slide rails. The ends of the two driving sections that are away from the corresponding limiting sections extend into the two slide rails and are connected; or, the ends of the two driving sections that are away from the corresponding limiting sections extend into the two slide rails but are not connected.

7. The connecting device according to claim 6, characterized in that, When the ends of the two drive segments that are away from the corresponding limiting segments extend into the two slide rails respectively and are not connected, each drive segment has a limiting part at the end that is away from the corresponding limiting segment. The limiting part is located inside the locking member, and the radial dimension of the limiting part is greater than the width of the slide rail.

8. The connecting device according to claim 1, characterized in that, Each locking member has a groove on its inner wall, the opening of the groove facing the longitudinal central axis of the locking member, and the groove depth gradually decreasing from the proximal end to the distal end. Each connecting member has two guide rails located on opposite sides of the longitudinal central axis of the connecting member. The driving limiting member includes a pulling section, a deformation section, and two transition sections. The two ends of the deformation section are respectively connected to the two transition sections. The pulling section is connected to the end of the two transition sections away from the deformation section. The deformation section passes radially through the connecting member. The pulling section extends axially from the inner cavity of the connecting member to the outside of the connecting member. The locking member is movably sleeved on the connecting member and the driving limiting member, and the two ends of the deformation section abut against the bottom of the groove.

9. The connecting device according to claim 5, characterized in that, The locking member is a sleeve structure, and the slide rail is formed on the side wall of the sleeve structure; or, the locking member includes a cover portion and an extension portion connected to the cover portion, the extension portion extending axially from one end connected to the cover portion to the proximal end, and the slide rail is formed on the extension portion, the cover portion being a collar structure or an arc-shaped shell.

10. The connecting device according to claim 5, characterized in that, The guide rail includes an axially extending guide rail and a radial protrusion communicating with the guide rail, and the distance between the distal end of the radial protrusion and the distal end of the guide rail is greater than zero; the slide rail extends axially and has a distal end and a proximal end, and the projection of the distal end on the plane where the proximal end is located and which is perpendicular to the longitudinal central axis of the locking member does not coincide with the proximal end; When the locking groove is in the locked state, the driving limiting member abuts against the proximal inner wall of the slide rail, and the driving section is located at the distal end of the radial protrusion. The locking groove cooperates with the driving limiting member to limit the locking member, so that when the driving limiting member and the corresponding connecting member remain relatively stationary, the locking member cannot slide along the connecting member in the first direction.

11. The connecting device according to claim 10, characterized in that, When the drive limiting member is pulled in the first direction to cause the locking member to slide in the first direction until the drive segment and the radial protrusion are radially aligned, the locking groove is partially opened but the locking groove is still in the locked state; in this state, the drive limiting member and the corresponding connecting member are kept relatively stationary, and the locking member is acted upon to make the locking member slide in the first direction to open the locking groove; when the locking groove is in the open state, the drive segment abuts against the distal inner wall of the slide rail.

12. The connecting device according to claim 10, characterized in that, The axial length of the bottom of the locking groove is Y1, the axial distance from the connection point between the locking groove's separating surface and the bottom of the groove to the distal end face of the connector is Y2, the guide rail includes an axially extending strip rail and a semicircular portion connected to the distal end of the strip rail, the axial distance from the distal end of the strip rail to the distal end face of the connector is Y3, the axial distance from the center position of the radial protrusion to the distal end of the strip rail is Y4, the slide rail includes a strip portion and two semicircular portions respectively connected to both ends of the strip portion, the axial length of the strip portion is Y5, and the axial distance from the connection point between the strip portion and the proximal semicircular portion to the distal end face of the locking member is Y6; Y1, Y2, Y3, Y4, Y5, and Y6 satisfy the following relationship: Y6≥Y3; Y2+Y6>Y3+Y4; Y6-Y5<Y3+Y4-Y1-Y2.

13. The connecting device according to claim 12, characterized in that, The radial protrusion includes a rectangular portion connected to the guide rail and a semicircular portion connected to the rectangular portion. The radial distance from the center of the guide rail to the end of the rectangular portion away from the guide rail is X1, and the radial distance from the center of the semicircular portion at the far end of the slide rail to the proximal end is X2. Y1, Y2, Y3, Y4, Y5, and Y6 satisfy the following relationship with X1 and X2: X1 / X2*Y5+Y4+Y3>Y1+Y2+Y6.

14. A connecting device for connecting an implant in a delivery system, characterized in that, include: Multiple connectors, each connector having a locking groove at its distal end, and each connector having a guide rail, the guide rail including an axially extending guide rail and a radial protrusion communicating with the guide rail; Multiple locking components correspond one-to-one with the multiple connecting components. Each locking component is sleeved on the corresponding connecting component, and each locking component is provided with a slide rail that extends obliquely along the axial direction of the locking component. Multiple driving limiting components correspond one-to-one with the multiple locking components, and the multiple connecting components also correspond one-to-one. The distal end of each driving limiting component is radially inserted through the slide rail of the corresponding locking component, and the proximal end extends along the axial direction of the corresponding connecting component. When the locking groove is in the locked state, the distal end face of the driving limiting member is located at the distal end of the distal end face of the radial protrusion, and the proximal end inner wall of the driving limiting member and the slide rail abuts against the proximal end of the locking member. The locking groove cooperates with the driving limiting member to limit the locking member in the first and second axially opposite directions. When the driving limiting member moves in the first direction until the far end of the driving limiting member is aligned radially with the radial protrusion, the locking member is slid in the first direction by an external force to open the locking groove. When the external force disappears, the corresponding driving limiting member drives the locking member to slide in the second direction opposite to the first direction to lock the locking groove. When the plurality of driving limiting members can be acted simultaneously and moved along the plurality of connecting members in the first direction, they can simultaneously drive the plurality of locking members to slide along the plurality of connecting members in the first direction to open the locking groove.

15. A conveyor, characterized in that, It includes an inner tube, an outer tube, and a connecting device as described in claim 1 or 14, wherein a plurality of connecting members of the connecting device surround the inner tube and are fixedly connected to the inner tube, and the outer tube is slidably sleeved on the connecting device and the inner tube along the axial direction.

16. A conveying system, characterized in that, The device includes an implant and a delivery device as described in claim 15, wherein the implant includes a plurality of connection structures, each of which is detachably connected to a plurality of connectors of the connection device.

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