Conveying device and conveying system

Abstract

The invention relates to the technical field of medical instruments, in particular to a conveying device and a conveying system. The conveying device comprises: a housing; the adjusting mechanism is installed on the shell, the adjusting mechanism is connected with the other end of the adjusting line, and the adjusting mechanism can drive the adjusting line to move towards the near end in the axial direction of the shell; and the take-up mechanism is installed on the shell, the take-up mechanism can be connected with the other end of the locking line, and the take-up mechanism can take up the locking line to lock the adjusting line. According to the conveying device provided by the embodiment of the invention, after the implantable instrument is conveyed to a target position, the adjusting wire is driven by the adjusting mechanism to move towards the near end in the axial direction of the shell, the shape of the body can be driven to change, then the locking wire is wound by the take-up mechanism, the adjusting wire can be locked and cannot continue to move, and at the moment, the implantable instrument is conveyed to the target position. The form of the implantable device is locked. The conveying device can be used for adjusting and locking the implantable instrument, so that the application range of the implantable instrument is wider.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a delivery device and a delivery system. Background Art

[0002] What is provided in this section is only background information related to the present disclosure, and it is not necessarily prior art.

[0003] Minimally invasive therapies are increasingly widely used in the treatment of cardiovascular diseases. For example, in a minimally invasive manner, an implantable device is delivered and released to a diseased site through a delivery sheath. Conventional implantable devices are usually made of elastic or shape memory materials. When the implantable device is delivered to the diseased site and released from the delivery sheath, the implantable device can return to a radially expanded form and be anchored to the diseased site. However, for implantable devices made of non-elastic or non-shape memory materials, such as polymer materials, etc., they cannot maintain the desired shape by themselves and usually need to be locked by means of a locking structure so that the implantable device can be anchored at the diseased site.

[0004] For example, a cardiac occluder with a double-disk structure usually has two symmetrically arranged occluding disks on the left and right and a waist. The two occluding disks respectively occlude the defect site from opposite sides of the defect site, and the waist connects the two occluding disks and is accommodated in the defect site. When the occluder is made of a polymer material, such as a polylactic acid material, the two occluding disks cannot self-lock (the distance between the two occluding disks remains fixed), and a locking structure is needed to lock the shape of the occluder.

[0005] The locking structure can be a rigid structure or a flexible structure such as a wire rope. When a flexible structure is used, it is necessary to tighten and lock the flexible structure to lock the shape of implantable devices such as occluders.

[0006] Therefore, it is necessary to provide a special delivery device for delivering it. Summary of the Invention

[0007] Based on this, it is necessary to provide a delivery device capable of locking the shape of an implantable device.

[0008] Furthermore, a delivery system capable of locking the shape of an implantable device is also provided.

[0009] A delivery device is used to deliver an implantable device, the implantable device includes a body, an adjustment wire and a locking wire, one end of the adjustment wire is connected to the body, and one end of the locking wire is connected to the body. The delivery device includes: a shell; an adjustment mechanism installed on the shell, the adjustment mechanism is connected to the other end of the adjustment wire, and the adjustment mechanism can drive the adjustment wire to move proximally along the axial direction of the shell; and a wire reel mechanism installed on the shell, the wire reel mechanism can be connected to the other end of the locking wire, and the wire reel mechanism can reel in the locking wire to lock the adjustment wire.

[0010] In one embodiment, the adjustment mechanism includes: a first operating member, which is slidably assembled with the shell along the axial direction of the shell; a first winding group, which is installed on the first operating member, and the first winding group includes a first winding wheel, and the other end of the adjustment wire is fixed to the shell after being wound and reversed by the first winding wheel.

[0011] In one embodiment, the first winding group includes at least two first winding wheels, the adjustment mechanism also includes a second winding group, the second winding group is installed on the shell, the second winding group includes a plurality of second winding wheels, and the adjustment line forms a fold between the first winding wheel and the second winding wheel.

[0012] In one of the embodiments, the adjustment mechanism also includes a first locking component for releasably locking the first operating member on the shell, the first locking component including: a first clamping member installed on the shell, a first clamping member having a first clamping slot; a first locking block connected to the first operating member and movably accommodated in or removed from the first clamping slot; and a first elastic member, one end of which is connected to the first locking block and the other end of which is connected to the first operating member, the first elastic member providing a driving force for the first clamping member to accommodate the first locking block in the first clamping slot.

[0013] In one embodiment, the adjustment mechanism also includes a fixed seat, which includes: a first fixed block installed on the shell; a second fixed block installed on the first fixed block, and the second fixed block can rotate unidirectionally relative to the first fixed block, and the other end of the adjustment line is fixed on the second fixed block after winding and reversing by the first winding wheel or after winding and reversing by the second winding wheel.

[0014] In one embodiment, the wire take-up mechanism includes: a reversing member connected to the housing, with the other end of the locking wire axially extending in the housing and then connected to the reversing member. The reversing member allows the locking wire to be wound around it to change the extending direction, causing the locking wire to extend in the radial direction; a wire take-up member disposed on the housing, where the wire take-up member can fix the locking wire after its extending direction is changed; and a driving member connected to the housing and also connected to the wire take-up member. The driving member can drive the wire take-up member to rotate around the longitudinal central axis of the housing to wind up the locking wire and lock the adjusting wire.

[0015] In one embodiment, an installation seat is provided on the housing. The wire take-up member is rotatably connected to the installation seat, and the wire take-up member can rotate around its own central axis on the installation seat. The driving member is a driving knob rotatably assembled with the housing, and the driving knob is connected to the wire take-up member.

[0016] In one embodiment, the wire take-up mechanism further includes a direction limiting component for restricting the one-way rotation of the driving knob. The direction limiting component includes: a first annular inclined rack installed on the housing; a locking block provided with a second annular inclined rack that can mesh with the first annular inclined rack; and a first elastic member, with one end connected to the locking block and the other end connected to the driving knob. The first elastic member provides a driving force for the locking block to make the first annular inclined rack and the second annular inclined rack tightly engage.

[0017] In one embodiment, the wire take-up mechanism further includes an overload protection component for restricting the rotation stroke of the driving knob. The overload protection component includes: a first annular rack installed on the wire take-up member; a force-relieving block provided with a second annular rack that can mesh with the first annular rack; and a second elastic member, with one end connected to the force-relieving block and the other end connected to the driving knob. The second elastic member is used to provide a driving force for the force-relieving block to make the first annular rack and the second annular rack tightly engage.

[0018] A delivery system includes: an implantable device, which includes a body, an adjusting wire, and a locking wire. One end of the adjusting wire is connected to the body, and one end of the locking wire is connected to the body. The locking wire is used to lock the adjusting wire; a delivery device as described in any one of the above embodiments, where the adjusting mechanism is connected to the other end of the adjusting wire, and the wire take-up mechanism is connected to the other end of the locking wire.

[0019] In one embodiment, the implantable device is a occluder. The body includes a first occluding disc and a second occluding disc which are oppositely arranged. One end of the adjusting wire is connected to the first occluding disc, and the other end passes through the second occluding disc and is connected to the adjusting mechanism. A preformed knot sleeving the adjusting wire is formed on the locking wire, and the preformed knot is located on the side of the second occluding disc away from the first occluding disc.

[0020] In one embodiment, the delivery device further includes a wire cutting mechanism, which is installed on the housing and located at the distal ends of the adjusting mechanism and the wire winding mechanism. The wire cutting mechanism can cut the adjusting wire and the locking wire.

[0021] In one embodiment, the wire cutting mechanism includes: a wire fixing seat installed on the housing, and a through hole allowing the adjusting wire and the locking wire to pass through is formed on the wire fixing seat; a cutting knife which can move in the radial direction of the housing to cut the adjusting wire and the locking wire; a key which is slidably assembled with the housing in the radial direction of the housing, and the key is connected to the cutting knife; and a first reset member, one end of which is connected to the wire fixing seat and the other end of which is connected to the key. The key drives the cutting knife to move towards the side for cutting the adjusting wire and the locking wire by overcoming the elastic force of the first reset member.

[0022] In one embodiment, the wire cutting mechanism further includes an anti-misoperation component for locking or unlocking the key on the housing. The anti-misoperation component includes: a stop block which is in movable abutment with the key. When the stop block abuts against the key, the key and the housing are relatively fixed. When the stop block is separated from the key, the key can slide relative to the housing; a second reset member, one end of which is connected to the housing and the other end of which is connected to the stop block. The second reset member provides a driving force for the stop block to move in the axial direction of the housing so that the stop block is in movable abutment with the key; and a control member which is slidably assembled with the housing in the axial direction of the housing, and the control member is connected to the stop block. When the control member moves by overcoming the elastic force of the second reset member, the stop block is separated from the key.

[0023] In one embodiment, the delivery system further includes a knot protection mechanism for maintaining the preformed knot in an unlocked state. The knot protection mechanism includes: a protection tube which is a hollow tube and allows the adjusting wire to pass through. The preformed knot is sleeved outside the protection tube; and a second operating member which is slidably assembled with the housing in the axial direction of the housing, and the second operating member is connected to the proximal end of the protection tube. The second operating member can drive the protection tube to slide axially relative to the preformed knot.

[0024] In one embodiment, the conveying system further includes a second locking assembly for locking or unlocking the second operating member on the housing. The second locking assembly includes: a second engaging member mounted on the housing, with a second engaging groove formed thereon; a second engaging block connected to the second operating member and movably received in or disengaged from the second engaging groove; and a second elastic member having one end connected to the second engaging block and the other end connected to the second operating member. The second elastic member is configured to provide a driving force for the second engaging member to enable the second engaging block to be received in the second engaging groove.

[0025] In the conveying device provided by the embodiment of the present invention, after the implantable device is conveyed to the target position, the adjusting mechanism drives the adjusting wire to move proximally along the axial direction of the housing, so as to drive the change of the shape of the body connected to the adjusting wire. Then, the wire winding mechanism winds the locking wire, so that the adjusting wire can be locked and cannot move further. At this time, the shape of the implantable device is locked, and the body is stably anchored at the target position. The conveying device can complete the adjustment and locking of the implantable device, so that the application range of the implantable device is wider.

[0026] In the conveying system provided by the embodiment of the present invention, the implantable device includes a body, an adjusting wire, and a locking wire. By providing a conveying device that can be connected to the adjusting wire and the locking wire, after the body is delivered to the target position, the conveying device can drive the adjusting wire and the locking wire to move respectively, so as to complete the shape locking of the implantable device, enabling the implantable device to be anchored at the target site. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0028] Among them:

[0029] Figure 1 is a schematic structural diagram of a plugging system according to an embodiment of the present invention;

[0030] Figure 2 is a schematic structural diagram of a plugging device according to an embodiment of the present invention;

[0031] Figure 3 is a schematic structural diagram of a preformed knot according to an embodiment of the present invention;

[0032] Figure 4Schematic diagram of the adjustment mechanism in an embodiment of the present invention;

[0033] Figure 5 Schematic diagram of the adjustment mechanism in another embodiment of the present invention;

[0034] Figure 6 Schematic diagram of the fixed seat in an embodiment of the present invention;

[0035] Figure 7 Schematic diagram of the wire winding mechanism in an embodiment of the present invention;

[0036] Figure 8 Exploded view of the wire winding mechanism in an embodiment of the present invention;

[0037] Figure 9 Schematic diagram of the wire cutting mechanism in an embodiment of the present invention;

[0038] Figure 10 Schematic diagram of the wire knot protection mechanism in an embodiment of the present invention;

[0039] Figure 11 Schematic diagram of the plugging system in an embodiment of the present invention. Detailed implementation manners

[0040] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0041] In the description of the embodiments of the present invention, it should be noted that terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the embodiments of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0042] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly defined and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium; it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific situations.

[0043] In the field of interventional medical devices, generally, the end of a medical device implanted into the human body or an animal body that is closer to the operator is called the "proximal end", and the end that is farther from the operator is called the "distal end", and the "proximal end" and "distal end" of any component of the medical device are defined based on this principle. The "axial direction" generally refers to the length direction of the medical device when it is being delivered, and the "radial direction" generally refers to the direction that is not parallel to the "axial direction" of the medical device, and the "axial direction" and "radial direction" of any component of the medical device are defined based on this principle. The "circumferential direction" refers to the circumferential direction, that is, the direction around the axis of the lumen structure or the cylinder.

[0044] Please refer to Figure 1 , an embodiment of the present invention provides a delivery system 100, including an implantable device 1 and a delivery device 2. Among them, the implantable device 1 is used to occlude the patent foramen ovale, the delivery device 2 is connected to the implantable device 1, the delivery device 2 can be used to deliver the implantable device 1, and releasing the connection relationship between the delivery device 2 and the implantable device 1 can release the implantable device 1.

[0045] It can be understood that the implantable device 1 is not limited to occluding the patent foramen ovale. In other embodiments, the implantable device 1 can also be used to occlude other defects in the vascular system such as the patent ductus arteriosus, atrial septal defect, or ventricular septal defect. Or, the implantable device 1 can also be other devices that are fixed in shape by tightening a wire rope.

[0046] Please refer to Figure 2 , in one embodiment, the implantable device 1 includes a body 11, an adjustment wire 12, and a locking wire 13. Among them, the locking wire 13 is a wire rope used to connect the implantable device 1 and the delivery device 1.

[0047] Among them, the body 11 includes a first blocking disk 111 and a second blocking disk 112 which are oppositely arranged. The first blocking disk 111 and the second blocking disk 112 are respectively used to cover the opposite two openings of the foramen ovale or other defect sites. One end of the adjusting wire 12 is connected to the first blocking disk 111, and the other end extends towards the side where the second blocking disk 112 is located and passes through the second blocking disk 112 to form a free end. The locking wire 13 is connected to the second blocking disk 112, and a preformed knot 131 is formed on the locking wire 13 (the preformed knot 131 means that it has the preliminary form of a knot but has not formed a locked state, and by pulling the free end of the locking wire 13, the preformed knot 131 can be locked and transformed into a knot). The preformed knot 131 is sleeved outside the adjusting wire 12, and the preformed knot 131 is located on the side of the second blocking disk 112 away from the first blocking disk 111.

[0048] After the implantable device 1 is delivered to the defect of the vascular system, the first blocking disk 111 and the second blocking disk 112 can be respectively located on the opposite two sides of the defect of the vascular system first, so as to block the defect. Then, by pulling the free end of the adjusting wire 12, the distance between the first blocking disk 111 and the second blocking disk 112 can be adjusted, so that the distance between the first blocking disk 111 and the second blocking disk 112 is adapted to the anatomical structure of the corresponding patient. After the distance between the first blocking disk 111 and the second blocking disk 112 is adjusted to the appropriate position, by pulling the free end of the locking wire 13, the preformed knot 131 can be locked and transformed into a knot. Since the free end of the adjusting wire 12 is sleeved by the preformed knot 131, when the preformed knot 131 is locked and transformed into a knot, the free end of the adjusting wire 12 cannot move any more under the action of the knot. That is, at this time, the relative distance between the first blocking disk 111 and the second blocking disk 112 is fixed, the shape of the body 11 is locked, and the first blocking disk 111 and the second blocking disk 112 stably block the two sides of the defect site. The arrangement of the adjusting wire 12 and the locking wire 13 enables the implantable device 1 to adapt to the differences between the anatomical structures of different patients, making the application range of the implantable device 1 wider.

[0049] It can be understood that in other embodiments, the locking wire 13 can also be connected to the first blocking disk 111, and the connection position of the locking wire 13 is not limited, as long as it is ensured that the preformed knot 131 can be formed on the side of the second blocking disk 112 away from the first blocking disk 111.

[0050] In one embodiment, both the first occlusion disk 111 and the second occlusion disk 112 are formed by braiding filaments. It should be noted that the adjustment line 12 can be an independent cord, which is connected to the first occlusion disk 111 by knotting or melting. Alternatively, the adjustment line 12 can also be formed by deriving from the filaments of the first occlusion disk 111. The locking line 13 can also be an independent cord, which is connected to the first occlusion disk 111 or the second occlusion disk 112 by knotting or melting. Alternatively, the locking line 13 can also be formed by deriving from the filaments of the first occlusion disk 111 or the second occlusion disk 112.

[0051] Please continue to refer to Figure 3 , in one embodiment, the preformed knot 131 is formed as follows: First, the two ends of the locking line 13 are overlapped to form a first basic line loop 130a. Then, the free end of the locking line 13 passes through the first basic line loop 130a to form a second basic line loop 130b. Then, the free end of the locking line 13 passes through the second basic line loop 130b to form a third basic line loop 130c. Then, the locking line 13 is pulled so that the third basic line loop 130c remains, and the first basic line loop 130a and the second basic line loop 130b are tightened. The adjustment line 12 is adapted to pass through the third basic line loop 130c. When the free end of the locking line 13 is pulled to tighten the third basic line loop 130c, the preformed knot 131 is locked and transformed into a knot for fixing the adjustment line 12.

[0052] It can be understood that the knotting method of the preformed knot 131 is not limited, as long as it can satisfy that the adjustment line 12 can pass through the preformed knot 131, and the free end of the adjustment line 12 can be fixed after the preformed knot 131 is locked.

[0053] Please return to Figure 1 , in one embodiment, the delivery device 2 includes a housing 21, an adjustment mechanism 22, a wire winding mechanism 23, and a wire cutting mechanism 24.

[0054] Among them, the adjustment mechanism 22, the wire winding mechanism 23, and the wire cutting mechanism 24 are all installed on the housing 21. In the loading state, the implantable device 1 is connected to the housing 21 by a cord (which is the locking line 13 in this embodiment). The adjustment mechanism 22 can be connected to the free end of the adjustment line 12, and the adjustment mechanism 22 can drive the free end of the adjustment line 12 to move axially along the housing 21 toward the proximal side of the housing 21. The wire winding mechanism 23 can be connected to the free end of the locking line 13, and the wire winding mechanism 23 can wind up the free end of the locking line 13 to tighten the preformed knot 131 on the locking line 13. The wire cutting mechanism 24 is located at the distal ends of both the adjustment mechanism 22 and the wire winding mechanism 23 at the same time. The wire cutting mechanism 24 can cut the adjustment line 12 and the locking line 13, so as to separate the implantable device 1 from the delivery device 2, and further release the implantable device 1.

[0055] The above-mentioned delivery device 2, during the process of delivering the implantable device 1, the adjustment mechanism 22 is connected to the free end of the adjustment wire 12 on the implantable device 1, and the wire winding mechanism 23 is connected to the ligation wire 13. When the implantable device 1 is delivered to the defect of the vascular system and the first occlusion disc 111 and the second occlusion disc 112 are in the deployed state, the free end of the adjustment wire 12 can be first driven by the adjustment mechanism 22 to move axially along the housing 21 towards the proximal side of the housing 21, so that the first occlusion disc 111 moves towards the side close to the second occlusion disc 112 under the drive of the adjustment wire 12, thereby adjusting the distance between the first occlusion disc 111 and the second occlusion disc 112. Then, the free end of the ligation wire 13 is wound by the wire winding mechanism 23, so that the preformed knot 131 on the ligation wire 13 is tightened to form a knot. Under the action of the knot, the adjustment wire 12 can no longer move, so that the relative position between the first occlusion disc 111 and the second occlusion disc 112 is fixed. Finally, the adjustment wire 12 and the ligation wire 13 are cut by the wire cutting mechanism 24, and the release of the implantable device 1 can be completed.

[0056] It can be understood that the wire cutting mechanism 24 in this embodiment cuts the adjustment wire 12 and the ligation wire 13 outside the human anatomical structure, and its purpose is to separate the delivery device 2 from the implantable device 1. Therefore, after the wire cutting mechanism 24 cuts the adjustment wire 12 and the ligation wire 13, a wire trimming device is also required to perform secondary trimming on the adjustment wire 12 and the ligation wire 13 from a position close to the distal end of the knot, so as to remove the excess lengths of the adjustment wire 12 and the ligation wire 13 connected to the implantable device 1 to prevent the excess lengths of the adjustment wire 12 and the ligation wire 13 from floating into the blood vessel and causing blood vessel blockage. Among them, the wire trimming device belongs to the prior art, so it will not be elaborated here.

[0057] Please refer to Figure 4 , in one embodiment, the adjustment mechanism 22 includes a first operating member 221 and a first wire winding group 222.

[0058] Among them, the first operating member 221 is slidably assembled with the housing 21 in the axial direction of the housing 21. The first wire winding group 222 is installed on the first operating member 221. The first wire winding group 222 includes a first wire winding wheel 2221. The free end of the adjustment wire 12 is wound and redirected through the first wire winding wheel 2221 and then fixed on the housing 21.

[0059] In this way, the first winding group 222 is installed on the first operating member 221, so the first winding group 222 can slide along the axial direction of the shell 21 synchronously with the first operating member 221, and the free end of the adjusting wire 12 is wound and reversed by the first winding wheel 2221 and then fixed to the shell 21. Therefore, when the first operating member 221 is slid toward the proximal end, under the action of the first winding wheel 2221, the adjusting wires 12 located on both sides of the first winding wheel 2221 will move synchronously. Therefore, the moving speed of the distal end of the adjusting wire 12 (the end of the adjusting wire 12 assembled with the first blocking disk 111) is actually twice the moving speed of the first operating member 221. times, the moving stroke of the distal end of the adjustment wire 12 is also twice the moving stroke of the first operating member 221, that is, the setting of the first winding group 222 can make the first occluding disk 111 and the second occluding disk 112 approach each other faster, so that the first occluding disk 111 and the second occluding disk 112 can be quickly adjusted to a position adapted to the patient's anatomical structure, thereby shortening the operation time. At the same time, the sliding stroke of the first operating member 221 required to adjust the first occluding disk 111 and the second occluding disk 112 to a position adapted to the patient's anatomical structure can be shortened, thereby reducing the axial size of the shell 21 as much as possible.

[0060] It is understandable that in other embodiments, the first winding group 222 may be omitted. When the first winding group 222 is omitted, the free end of the adjustment wire 12 is directly fixed on the first operating member 221. At this time, the moving speed and moving stroke of the far end of the adjustment wire 12 are the same as those of the first operating member 221.

[0061] Please continue reading Figure 5 In another embodiment, the first winding group 222 includes three first winding wheels 2221. At this time, the adjusting mechanism 22 also includes a second winding group 223, and the second winding group 223 includes two second winding wheels 2231. The second winding group 223 is fixedly mounted on the shell 21, and the second winding group 223 is located between the fixed point of the adjusting line 12 on the shell 21 and the first winding group 222. The adjusting line 12 is folded between the first winding wheel 2221 and the second winding wheel 2231 in turn, and is finally fixed on the shell 21.

[0062] With such a setting, the second winding group 223 is fixed on the housing 21. Therefore, the second winding wheel 2231 actually only serves the function of commutation. In this embodiment, since the adjusting wire 12 is first wound and commutated around the first winding wheel 2221, then wound and commutated around the second winding wheel 2231, and then wound and commutated around another first winding wheel 2221... and so on, successively winding all the adjusting wires 12 on the first winding wheels 2221 and the second winding wheels 2231. Therefore, in this embodiment, there are 3 first winding wheels 2221 that slide simultaneously with the first operating member 221, and the adjusting wire 12 is wound on all 3 first winding wheels 2221. Therefore, in this embodiment, the moving speed of the distal end of the adjusting wire 12 is actually 6 times that of the first operating member 221. That is, by setting the second winding group 223, the second winding group 223 plays the role of a fixed pulley for commutation, so that the adjusting wire 12 can be wound around multiple first winding wheels 2221 at the same time, enabling multiple first winding wheels 2221 to synchronously play the role of a movable pulley, thereby further increasing the moving speed of the distal end of the adjusting wire 12 and shortening the sliding stroke that the first operating member 221 needs to move.

[0063] It can be understood that in other embodiments, it can also be that the number of the first winding wheels 2221 is two, and the number of the second winding wheels 2231 is one, or the number of the first winding wheels 2221 is four, and the number of the second winding wheels 2231 is three, or the number of the first winding wheels 2221 is four, and the number of the second winding wheels 2231 is two. That is, the number of the first winding wheels 2221 and the number of the second winding wheels 2231 are not limited. When the number of the first winding wheels 2221 is one, the second winding wheel 2231 can be not provided. When the number of the first winding wheels 2221 is two or more, as long as the number of the second winding wheels 2231 is less than the number of the first winding wheels 2221, at least two first winding wheels 2221 can be wound by the adjusting wire 12 to play the role of a movable pulley. In addition, it can be understood that the number of the second winding wheels 2231 can also be greater than the number of the first winding wheels 2221. However, the numerical ratio relationship between the moving speed of the distal end of the adjusting wire 12 and the moving speed of the first operating member 221 is actually determined by the number of the first winding wheels 2221 that play the role of a movable pulley. For example, when the number of the first winding wheels 2221 is four and the number of the second winding wheels 2231 is two, at this time, only three first winding wheels 2221 can fully play the role of a movable pulley. Therefore, the moving speed of the distal end of the adjusting wire 12 is actually still six times the moving speed of the first operating member 221. That is, when the adjusting mechanism 22 includes the second winding group 223, the number of the second winding wheels 2231 is several, and "several" refers to an integer greater than or equal to 1.

[0064] It can also be understood that in other embodiments, the second winding group 223 can also be located on the distal side of the first winding group 222, or on the proximal side of the fixing point of the adjusting wire 12 on the housing 21. The positions of the first winding group 222 and the second winding group 223 only need to satisfy that the first winding wheel 2221 can play the role of a movable pulley, and the adjusting wire 12 will not detach from the first winding wheel 2221 and the second winding wheel 2231.

[0065] Please continue to refer to Figure 5 , in an embodiment, the housing 21 is a hollow structure, and a first sliding hole (not shown in the figure) extending along the axial direction of the housing 21 is formed in the side wall of the housing 21. The first operating member 221 includes a first sliding portion 2211 and a first operating portion 2212. Among them, the main portion of the first sliding portion 2211 is accommodated in the housing 21 and is slidably assembled with the housing 21. The end portion of the first sliding portion 2211 extends out of the housing 21 through the first sliding hole. The first operating portion 2212 is connected to the first sliding portion 2211, and the first operating portion 2212 is located outside the housing 21. By moving the first operating portion 2212, the first sliding portion 2211 can be driven to slide along the first sliding hole. The first winding group 222 is installed on the first sliding portion 2211.

[0066] In this embodiment, two first sliding holes are provided and symmetrically distributed on the side wall of the housing 21. Two corresponding first operating portions 2212 are also provided, so that the first operating member 221 can slide more stably along the first sliding hole. In other embodiments, the number of first sliding holes can also be set to an integer number such as three, four, six, etc., and the number of corresponding first operating portions 2212 can also be set to other integer numbers, so as to facilitate the operator to select the first operating portion 2212 on the most convenient side to push. In addition, in an embodiment, anti-slip ridges 22121 are further provided on the first operating portion 2212, so as to facilitate the operator to apply an external force to the first operating portion 2212.

[0067] Please refer to Figure 5-6 , in an embodiment, the free end of the adjusting wire 12 is fixed to the housing 21 through a fixing seat 25. The fixing seat 25 includes a first fixing block 251, a second fixing block 252, an assembly screw 253, and an elastic connecting member 254.

[0068] Among them, the first fixing block 251 is fixedly installed on the housing 21. On the side of the first fixing block 251 away from the housing 21, helical teeth (not shown in the figure) are provided along the circumferential direction. The second fixing block 252 meshes with the first fixing block 251 through the helical teeth, so that the second fixing block 252 can only rotate unidirectionally relative to the first fixing block 251. The assembly screw 253 is threadedly connected to the first fixing block 251. One end of the elastic connecting piece 254 is connected to the assembly screw 253, and the other end is connected to the second fixing block 252. The free end of the adjusting wire 12 is fixed to the second fixing block 252.

[0069] With such a setting, when assembling the implantable device 1 and the delivery device 2, the excess adjusting wire 12 can be wound by rotating the second fixing block 252, thereby avoiding the situation that the first operating member 221 needs a large movement stroke due to the too long length of the adjusting wire 12, or the free end of the adjusting wire 12 cannot be connected to the first operating member 221 due to the too short length of the adjusting wire 12. At the same time, since the second fixing block 252 can only rotate unidirectionally, it is possible to avoid the situation that the second fixing block 252 reverses and the adjusting wire 12 becomes loose under the tension of the adjusting wire 12 during the delivery process. It can be understood that in other embodiments, the adjusting wire 12 can also be directly fixed to the housing 21 by tying or gluing.

[0070] Please return to Figure 5 , in an embodiment, to prevent the first operating member 221 from being accidentally touched and driving the adjusting wire 12 to move in advance, a first locking assembly 224 is further provided in the adjusting mechanism 22. The first locking assembly 224 is used to lock or unlock the first operating member 221 on the housing 21.

[0071] In an embodiment, the first locking assembly 224 includes a first clamping member 2241, a first locking block 2242, and a first elastic member 2243. Among them, the first clamping member 2241 is installed on the housing 21, and a plurality of continuous first clamping grooves 22411 are provided on the first clamping member 2241. The plurality of first clamping grooves 22411 are evenly arranged along the axial direction of the housing 21. The first locking block 2242 is connected to the first sliding portion 2211 of the first operating member 221, and the first locking block 2242 is movably accommodated in the first clamping groove 22411. One end of the first elastic member 2243 is connected to the first locking block 2242, and the other end is connected to the first operating member 221. The first elastic member 2243 is used to provide a driving force for the first locking block 2242 so that the first locking block 2242 is accommodated in the first clamping groove 22411.

[0072] When the first locking block 2242 is received in the first card slot 22411, the first operating member 221 is locked on the housing 21. When a driving force is applied to the first operating member 221 such that the first operating member 221 can overcome the driving force provided by the first elastic member 2243 to the first locking block 2242, the first locking block 2242 slides out of the first card slot 22411, and the first operating member 221 is unlocked. Such a setting makes it necessary to apply a sufficiently large driving force to move the first operating member 221. When no external force is applied to the first operating member 221 or the external force is not sufficient to overcome the action of the first elastic member 2243, the first operating member 221 is locked and will not move by itself. Thus, it is possible to avoid the situation where the adjustment wire 12 moves prematurely before reaching the target position due to accidental contact with the first operating member 221.

[0073] It can be understood that the setting of multiple consecutive first card slots 22411 enables the first operating member 221 to be locked at any position along the length of the first engaging member 2241. In other embodiments, only one first card slot 22411 may be provided, or multiple first card slots 22411 may be provided at intervals. In this way, the locking and unlocking of the first operating member 221 can also be achieved. In addition, in this embodiment, two sets of first locking components 224 are provided and are respectively located on both sides in the radial direction of the housing 21, so that the sliding and locking of the first operating member 221 are more stable. In other embodiments, only one set of first locking components 224 may be provided, or the first locking components 224 may be provided in three sets, four sets or other integer sets.

[0074] Please continue to refer to Figure 7-8 , in one embodiment, the wire take-up mechanism 23 includes a reversing member 231, a wire take-up member 232, and a driving member 233.

[0075] Among them, the reversing member 231 is installed on the housing 21, and the free end of the locking wire 13 rotates around the reversing member 231, so that the extending direction of the locking wire 13 changes from the original axial extension along the housing 21 to the radial extension along the housing 21. The wire take-up member 232 is connected to the free end of the locking wire 13 after the extension direction is changed. The driving member 233 is installed on the housing 21, and the driving member 233 is connected to the wire take-up member 232. The driving member 233 is used to drive the wire take-up member 232 to rotate in the radial direction of the housing 21 to wind up the locking wire 13, so as to lock the preformed knot 131. By changing the extending direction of the locking wire 13 through the reversing member 231, and then using the driving member 233 to drive the wire take-up member 232 to rotate to wind up the locking wire 13, the axial movement of the locking wire 13 is converted into radial rotation. Therefore, compared with the method of tightening the preformed knot 131 by axial movement, the axial dimension of the wire take-up mechanism 23 in this embodiment will not affect the movable stroke of the locking wire 13, so that the overall size of the conveying device 2 can be reduced.

[0076] It can be understood that the wire take-up structure 23 in this embodiment is not limited to tightening the locking wire 13. In other embodiments, it can also be used to tighten the adjustment wire 12 or other wire ropes that need to move over a long distance.

[0077] Please continue to refer to Figure 7-8 , in one embodiment, two mounting seats 212 are provided on the housing 21. Assembly holes (not labeled in the figure) are formed in the two mounting seats 212. The wire take-up member 232 has a cylindrical structure, and both ends of the wire take-up member 232 are respectively inserted into the assembly holes and rotatably assembled with the mounting seats 212. The wire take-up member 232 can rotate around its own central axis on the mounting seats 212, so as to realize the winding of the locking wire 13. The driving member 233 is a driving knob 2330 rotatably assembled with the housing 21. The distal end of the driving knob 2330 is connected to the proximal end of the wire take-up member 232. By rotating the driving knob 2330, the wire take-up member 232 can be driven to rotate.

[0078] It can be understood that the arrangement of the mounting seats 212 makes the wire take-up member 232 not completely suspended in the housing 21. The mounting seats 212 can provide a supporting force for the wire take-up member 232, so that the wire take-up member 232 can rotate more stably, which is beneficial to winding the locking wire 13. In addition, the specific shape and number of the mounting seats 212 are not limited. The shapes of the mounting seats 212 can be different from each other. The mounting seats 212 can also be provided with an integer number such as three or four. The mounting seats 212 only need to be able to provide a supporting force for the wire take-up member 232. In other embodiments, the mounting seats 212 can also be omitted, and the wire take-up member 232 can be directly fixed on the driving member 233. In addition, by setting the driving member 233 as a driving knob 2330 rotatably connected to the housing 21, its structure is simple and easy to implement. In other embodiments, an electric driving method such as a micro motor can also be set.

[0079] Please continue to refer to Figure 7-8 , in one embodiment, a wire groove 2321 is formed on the cylindrical structure of the wire take-up member 232. The free end of the locking wire 13 is fixed to the bottom wall of the wire groove 2321, so that the wound locking wire 13 is all accommodated in the wire groove 2321, thereby preventing the locking wire 13 from slipping off the wire take-up member 232 during the winding process. In addition, it can be understood that convex ribs 2322 can also be provided on the bottom wall of the wire groove 2321, so as to further increase the friction force between the wire take-up member 232 and the locking wire 13 and facilitate the winding of the locking wire 13.

[0080] In one embodiment, a circular groove is provided at the proximal end of the housing 21, and a circular block is provided on the driving knob 2330. The driving knob 2330 is rotatably connected to the housing 21 by the engagement of the circular groove and the circular block. In other embodiments, it may also be that a circular block is provided on the housing 21 and a circular groove is provided on the driving knob 2330.

[0081] Please continue to refer to Figure 7-8 , in one embodiment, the wire winding mechanism 23 further includes a direction limiting component 234, and the direction limiting component 234 is used to limit the driving knob 2330 to rotate in only one direction.

[0082] Specifically, the direction limiting component 234 includes a first annular inclined rack 2341, a locking block 2342, and a first elastic member 2343. The first annular inclined rack 2341 is installed on the housing 21. A second annular inclined rack 23421 that can mesh with the first annular inclined rack 2341 is provided on the locking block 2342. One end of the first elastic member 2343 is connected to the locking block 2342, and the other end is connected to the driving knob 2330. The first elastic member 2343 is used to provide a driving force for the locking block 2342 so that the first annular inclined rack 2341 and the second annular inclined rack 23421 are tightly engaged. One end of the locking block 2342 abuts against the first annular inclined rack 2341, and the other end is connected to the driving knob 2330 through the first elastic member 2243 and is received in the driving knob 2330.

[0083] With such a setting, when the driving knob 2330 is rotated, and the driving knob 2330 moves in the direction where the single tooth slope of the second annular inclined rack 23421 increases, since the first annular inclined rack 2341 is fixed to the housing 21 and does not move, the single tooth of the second annular inclined rack 23421 will rotate along the inclined surface of the single tooth on the first annular inclined rack 2341, thereby compressing the first elastic member 2343 under an external force to achieve the rotation of the driving knob 2330. When the driving knob 2330 is rotated in the reverse direction, due to the blocking effect of the side wall of the single tooth, the driving knob 2330 cannot rotate. That is, under the action of the first annular inclined rack 2341 and the second annular inclined rack 23421, the driving knob 2330 can only rotate in one direction. Thus, after the driving knob 2330 rotates to the target position, even if the operator no longer applies a rotational force to the driving knob 2330, the driving knob 2330 will not rotate in the reverse direction under the tension of the locking wire 13. Therefore, the operator's hands can be liberated, facilitating the progress of other release steps. It can be understood that in this embodiment, the direction in which the single tooth slope of the second annular inclined rack 23421 increases is the clockwise direction. Therefore, in this embodiment, the driving knob 2330 can only rotate in the clockwise direction. In other embodiments, the direction in which the single tooth slope of the second annular inclined rack 23421 increases can also be the counterclockwise direction.

[0084] Please continue to refer to Figure 7-8 , in one embodiment, the wire take-up mechanism 23 further includes an overload protection assembly 235 for limiting the rotation stroke of the driving knob 2330.

[0085] The overload protection assembly 235 includes a first annular rack 2351, a force release block 2352, and a second elastic member 2353. The first annular rack 2351 is installed on the wire take-up member 232. The force release block 2352 is provided with a second annular rack 23521 that can mesh with the first annular rack 2351. One end of the second elastic member 2353 is connected to the force release block 2352, and the other end is connected to the driving knob 2330. The second elastic member 2353 is used to provide a driving force for the force release block 2352 to make the first annular rack 2351 and the second annular rack 23521 abut and mesh tightly. One end of the force release block 2352 abuts against the first annular rack 2351, and the other end is connected to the driving knob 2330 through the second elastic member 2353 and is received in the driving knob 2330.

[0086] With such a setting, before the locking wire 13 is locked, the locking wire 13 is in a relaxed state, and the torque applied to the wire take-up member 232 is small. Therefore, the wire take-up member 232 can rotate together with the force-releasing block 2352 under the engagement of the first annular rack 2351 and the second annular rack 23521 along with the driving knob 2330, thereby taking up the locking wire 13. When the locking wire 13 is locked, the locking wire 13 is in a tensioned state. At this time, if the driving knob 2330 is continuously rotated, the locking wire 13 will provide a relatively large torque to the wire take-up member 232. When this torque is greater than the torque applied by the driving knob 2330 to the force-releasing block 2352, continuously rotating the driving knob 2330 will cause the force-releasing block 2352 to slide by compressing the second elastic member 2353, that is, the first annular rack 2351 and the second annular rack 23521 are no longer continuously engaged, and the force-releasing block 2352 can no longer drive the wire take-up member 232 to rotate, resulting in a slipping phenomenon, thereby preventing the locking wire 13 from being broken due to excessive tension when the driving knob 2330 is continuously rotated after the locking wire 13 is locked.

[0087] Please continue to refer to Figure 7 , in an embodiment, a receiving groove 23301 is formed on the driving knob 2330. The locking block 2342 and the force-releasing block 2352 are both received in the receiving groove 23301, and the first elastic member 2342 and the second elastic member 2353 are both connected to the bottom wall of the receiving groove 23301. Moreover, one end of the wire take-up member 232 on which the first annular rack 2351 is installed extends into the locking block 2342, and one end of the force-releasing block 2352 on which the second annular rack 23521 is provided extends into the locking block 2342, thereby making the structure of the conveying device 2 more compact.

[0088] In this embodiment, both the first elastic member 2343 and the second elastic member 2353 are springs. To make the driving force direction provided when the spring is compressed more stable, a guiding column 23302 is further provided on the driving knob 2330. The first elastic member 2343 is sleeved on the guiding column 23302 and abuts against the bottom wall of the receiving groove 23301. The force-releasing block 2352 is received in the guiding column 23302. One end of the second elastic member 2353 extends into the force-releasing block 2352 and abuts against the force-releasing block 2352, and the other end extends out of the force-releasing block 2352 and abuts against the bottom wall of the receiving groove 23301.

[0089] In other embodiments, the first elastic member 2343 and the second elastic member 2353 can also be other elastic elements such as rubber pads or elastic sheets.

[0090] Please refer to Figure 9 , in an embodiment, the wire cutting mechanism 24 includes a wire fixing base 241, a cutter 242, a button 243, and a first reset member 244.

[0091] Among them, the wire fixing base 241 is installed on the housing 21. A through hole 2410 extending axially is formed on the wire fixing base 241. The through hole 2410 allows the adjusting wire 12 and the locking wire 13 to pass through ( Figure 9 wherein the adjusting wire 12 and the locking wire 13 overlap), the cutter 242 has a cutting edge, and the cutter 242 can slide along the radial direction of the housing 21 to cut the adjusting wire 12 and the locking wire 13. The button 243 is slidably assembled with the housing 21 along the radial direction of the housing 21, and the button 243 is connected to the cutter 242. One end of the first reset member 244 is connected to the wire fixing base 241, and the other end is connected to the button 243. The button 243 overcomes the elastic force of the first reset member 244 to drive the cutter 242 to move toward the side for cutting the adjusting wire 12 and the locking wire 13.

[0092] Before the preformed knot 131 is locked, the button 243 moves away from the wire fixing base 241 under the action of the elastic force of the first reset member 244. When the preformed knot 131 is locked, by applying a driving force to the button 243, the driving force is made greater than the elastic force provided by the first reset member 244, so that the button 243 moves toward the side close to the through hole 2410, and then drives the cutter 242 mounted on the button 243 to move toward the side close to the through hole 2410 until it abuts against the adjusting wire 12 and the locking wire 13 and cuts the adjusting wire 12 and the locking wire 13. After the cutting is completed, the driving force applied to the button 243 is released, and the button 243 moves away from the through hole 2410 under the action of the first reset member 244 to return to the initial position. The structure is simple and easy to implement.

[0093] Please continue to refer to Figure 9 , in an embodiment, the wire cutting mechanism 24 further includes an anti-misoperation component 245, and the anti-misoperation component 245 is used to lock or unlock the button 243 at a predetermined position on the housing 21.

[0094] The anti-misoperation component 245 includes a stopper 2451, a second reset member 2452, and a control member 2453. Among them, the stopper 2451 is movably abutted against the button 243. When the stopper 2451 abuts against the button 243, the button 243 is locked and cannot move relative to the housing 21. When the stopper 2451 is separated from the button 243, the button 243 is unlocked and can slide relative to the housing 21. One end of the second reset member 2452 is connected to the housing 21, and the other end is connected to the stopper 2451. The second reset member 2452 provides a driving force for the stopper 2451 to move along the axial direction of the housing 21 so that the stopper 2451 abuts against the button 243. The control member 2453 is slidably assembled with the housing 21 along the axial direction of the housing 21, the control member 2453 is connected to the stopper 2451, and when the control member 2453 moves against the elastic force of the second reset member 2452, the stopper 2451 is separated from the button 243.

[0095] When the anti-misoperation component 245 is in the initial state, the stopper 2451 abuts against the button 243 under the action of the second reset member 2452, and the button 243 is locked. At this time, the button 243 cannot be pressed. By applying an external force to the stopper 2451, when the stopper 2451 moves to the side that overcomes the elastic force provided by the second reset member 2452, the stopper 2451 is separated from the button 243, and the button 243 can be pressed. Then, the button 243 drives the cutter 242 to cut the adjustment wire 12 and the locking wire 13. The setting of the anti-misoperation component 245 can prevent the button 243 from being accidentally touched before the adjustment wire 12 reaches the target position or the preformed knot 131 is not locked, resulting in the adjustment wire 12 and the locking wire 13 being cut in advance and the implantable device 1 not being able to be used normally.

[0096] Please return to Figure 1 . In one embodiment, the conveying device 2 further includes a knot protection mechanism 26 for maintaining the preformed knot 131 in an unlocked state.

[0097] Please refer to Figure 10 . The knot protection mechanism 26 includes a protection tube 261 and a second operating member 262. Among them, the protection tube 261 is a hollow tube, and the adjustment wire 12 can pass through the protection tube 261. The preformed knot 131 is sleeved outside the protection tube 261. The second operating member 262 is slidably assembled with the housing 21 along the axial direction of the housing 21. The second operating member 262 is connected to the proximal end of the protection tube 261, and the second operating member 262 can drive the protection tube 261 to slide along the axial direction of the housing 21.

[0098] The setting of the knot protection mechanism 26 makes it that before the implantable device 1 is delivered to the target position, the preformed knot 131 is sleeved outside the protection tube 261. At this time, under the action of the protection tube 261, even if the free end of the locking wire 13 is pulled, the preformed knot 131 will not tighten. When the implantable device 1 is delivered to the target position, by controlling the sliding of the second operating member 262 to drive the protection tube 261 to move proximally along the housing 21, the preformed knot 131 is disengaged from the protection tube 261. At this time, by pulling the free end of the locking wire 13, the preformed knot 131 can be locked to fix the adjustment wire 12. Such a setting can avoid the situation that the preformed knot 131 is locked in advance due to accidental touching of the free end of the locking wire 13 before the implantable device 1 is delivered to the target position.

[0099] Please continue to refer to Figure 10, in one embodiment, a second sliding hole (not shown in the figure) extending along the axial direction of the housing 21 is further formed on the side wall of the housing 21. The second operating member 262 includes a second sliding portion 2621 and a second operating portion 2622. Among them, the main body portion of the second sliding portion 2621 is accommodated in the housing 21 and is slidably assembled with the housing 21. The end of the second sliding portion 2622 extends out of the housing 21 through the second sliding hole. The second operating portion 2621 is connected to the second sliding portion 2622, and the second operating portion 2621 is located outside the housing 21. By moving the second operating portion 2621, the second sliding portion 2622 can be driven to slide along the second sliding hole.

[0100] In this embodiment, there are two second sliding holes, and they are symmetrically distributed on the side wall of the housing 21. There are also two corresponding second operating portions 2622, so that the second operating member 262 can slide more stably along the second sliding hole. In other embodiments, the number of second sliding holes can also be set to an integer such as three, four, six, etc., and the number of corresponding second operating portions 2622 can also be set to other integers, so as to facilitate the operator to select the second operating portion 2622 on the most convenient side to push. In addition, in one embodiment, anti-slip ridges 26221 are further provided on the second operating portion 2622, so as to facilitate the operator to apply an external force to the second operating portion 2622. In this embodiment, an installation hole (not shown in the figure) is formed on the second sliding portion 2622. The end of the protection tube 261 is accommodated in the installation hole and is bonded to the second sliding portion 2622. In other embodiments, the protection tube 261 can also be connected to the second sliding portion 2622 by means of snap connection or threaded connection.

[0101] Please continue to refer to Figure 10 , in one embodiment, to prevent the second operating member 262 from being accidentally touched and driving the protection tube 261 to move in advance, a second locking assembly 263 is further provided in the knot protection mechanism 26. The second locking assembly 263 is used to lock or unlock the second operating member 262 on the housing 21.

[0102] In one embodiment, the second locking assembly 263 includes a second clamping member 2631, a second locking block 2632 and a second elastic member 2633. Among them, the second clamping member 2631 is installed on the housing 21, and a plurality of continuous second clamping grooves 26311 are formed on the second clamping member 2631. The plurality of second clamping grooves 26311 are evenly arranged along the axial direction of the housing 21. The second locking block 2632 is connected to the second sliding portion 2621 of the second operating member 262 and is movably accommodated in the second clamping groove 26311. One end of the second elastic member 2633 is connected to the second locking block 2632, and the other end is connected to the second operating member 262. The second elastic member 2633 is used to provide a driving force for the second locking block 2632 so that the second locking block 2632 is accommodated in the second clamping groove 26311.

[0103] When the second locking block 2632 is received in the second card slot 26311, the second operating member 262 is locked to the housing 21. When a driving force is applied to the second operating member 262 such that the second operating member 262 can overcome the driving force provided by the second elastic member 2633 to the second locking block 2632, the second locking block 2632 slides out of the second card slot 26311, and the second operating member 262 is unlocked. Such a setting makes it necessary to apply a sufficiently large driving force to move the second operating member 262. When no external force is applied to the second operating member 262 or the external force is not sufficient to overcome the action of the second elastic member 2633, the second operating member 262 is locked and will not move by itself. Thus, it is possible to avoid the situation where the protection tube 261 is prematurely withdrawn and the preformed knot 131 is prematurely locked before the implantable device 1 has been delivered to the target position due to accidental touching of the second operating member 262.

[0104] It can be understood that the setting of multiple consecutive second card slots 26311 enables the second operating member 262 to be locked at any position along the length of the second engaging member 2631. In other embodiments, only one second card slot 26311 may be provided, or multiple second card slots 26311 may be spaced apart. In this way, the locking and unlocking of the second operating member 262 can also be achieved. Additionally, in this embodiment, two sets of second locking assemblies 263 are provided and are respectively located on both sides in the radial direction of the housing 21, thereby making the sliding and locking of the second operating member 262 more stable. In other embodiments, only one set of second locking assemblies 263 may be provided, or the second locking assemblies 263 may be provided in three sets, four sets, or other integer sets.

[0105] Please return to Figure 1 , in one embodiment, the delivery device 2 further includes a holding tube 27. The proximal end of the holding tube 27 is connected to the housing 21, and the holding tube 27 is sleeved outside the protection tube 261. The distal end of the holding tube 27 abuts against the preformed knot 131.

[0106] The setting of the holding tube 27 can, on the one hand, be used to abut the second sealing disc 112 against the human anatomical structure when pulling the adjustment wire 12, thereby preventing the distance between the first sealing disc 111 and the second sealing disc 112 from not conforming to the human anatomical structure due to a certain distance between the second sealing disc 112 and the human anatomical structure, or preventing the second sealing disc 112 from moving along with the adjustment wire 12 during the movement of the adjustment wire 12. On the other hand, the holding tube 27 can also abut against the preformed knot 131, thereby preventing the preformed knot 13 from moving during the pulling of the locking wire 13 and causing the finally obtained knot to be in an undesired position.

[0107] It can be understood that in one embodiment, the abutting tube 27 is arranged as a multi-lumen tube, and the protection tube 261 is accommodated in one of the lumens. Such an arrangement can ensure that the abutting tube 27 has a large radial dimension on the basis of being able to abut against the preformed knot 13, thereby increasing the contact area with the second sealing disc 112 and playing a better abutting role on the second sealing disc 112. In other embodiments, the abutting tube 27 can also be arranged as a single-lumen tube, and it can also play an abutting role.

[0108] Please refer to Figure 11 , in one embodiment, the occlusion system 100 further includes an external sheath tube 3. The external sheath tube 3 is a hollow tube, one end of which abuts against the distal end of the housing 21, and the other end extends towards the side where the implantable device 1 is located. The implantable device 1 is accommodated in the external sheath tube 3 after being compressed. The external sheath tube 3 cooperates with the delivery device 2 to deliver the implantable device 1.

[0109] The specific delivery-release process of the implantable device 1 in this embodiment is as follows: First, the implantable device 1 is connected to the delivery device 2, and then the implantable device 1 is compressed and accommodated in the external sheath tube 3. The implantable device 1 is delivered to the defect of the vascular system under the cooperation of the delivery device 2 and the external sheath tube 3. Then, the external sheath tube 3 is withdrawn, so that the first sealing disc 111 and the second sealing disc 112 are respectively located at two opposite positions of the defect. After that, the second sealing disc 112 is abutted against the tissue of the vascular system by using the abutting tube 27. Then, the adjustment wire 12 is pulled, so that the first sealing disc 111 moves towards the side close to the second sealing disc 112 until the first sealing disc 111 also abuts against the tissue of the vascular system. Then, the protection tube 261 is withdrawn, so that the preformed knot 131 is in a state where it can be locked. Then, the locking wire 13 is wound up, so that the preformed knot 131 is locked to form a knot under the abutment of the abutting tube 27. Thus, the first sealing disc 111 and the second sealing disc 112 are stably located on opposite sides of the defect to occlude the defect. Then, the adjustment wire 12 and the locking wire 13 are cut by using the tangent mechanism 24, so as to separate the implantable device 1 from the delivery device 2, so that the delivery device 2 can be withdrawn from the human anatomical structure. Finally, the redundant adjustment wire 12 and locking wire 13 at the distal part of the knot are sheared by using the wire cutting device, and the entire release process of the implantable device 1 is completed.

[0110] It can be understood that the compressed implantable device 1 can be guided by the guiding sheath 4 to be accommodated in the external sheath tube 3. The guiding sheath 4 can be arranged as a tearable sheath, so that it can be removed after guiding the implantable device into the external sheath tube 3.

[0111] In addition, in other embodiments, an outer sheath tube that can slide relative to the housing 21 and a control assembly for controlling the movement of the outer sheath tube can also be directly added to the housing 21 of the delivery device 2. By controlling the sliding of the outer sheath tube through the control assembly, the restraint and release of the implantable device 1 can be completed, thereby making the delivery device 2 more integrated.

[0112] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0113] The above-disclosed are only the preferred embodiments of the present invention. Of course, the scope of the rights of the present invention cannot be limited thereby. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A delivery device for delivering an implantable device, the implantable device comprising a body, an adjustment wire, and a ligation wire, one end of the adjustment wire being connected to the body, one end of the ligation wire being connected to the body, characterized in that, The conveying device comprises: case; an adjusting mechanism, mounted on the housing, the adjusting mechanism being connected to the other end of the adjusting wire, and the adjusting mechanism being capable of driving the adjusting wire to move toward the proximal end along the axial direction of the housing; and A wire taking-up mechanism is installed on the housing, and the wire taking-up mechanism can be connected to the other end of the locking wire, and the wire taking-up mechanism can reel in the locking wire to lock the adjustment wire.

2. The delivery device according to claim 1, characterized in that, The regulating mechanism comprises: A first operating member is slidably assembled with the housing along the axial direction of the housing; The first winding group is installed on the first operating member. The first winding group includes a first winding wheel. The other end of the regulating wire is fixed on the housing after being wound and reversed by the first winding wheel.

3. The delivery device according to claim 2, characterized in that, The first winding group includes at least two first winding wheels, and the adjustment mechanism also includes a second winding group, the second winding group is installed on the shell, the second winding group includes a plurality of second winding wheels, and the adjustment line forms a fold between the first winding wheel and the second winding wheel.

4. The delivery device according to claim 2 or 3, characterized in that, The adjustment mechanism further includes a first locking assembly for releasably locking the first operating member on the housing, the first locking assembly comprising: A first clamping member is mounted on the housing, and a first clamping slot is formed on the first clamping member; a first locking block connected to the first operating member and movably received in the first card slot or removed from the first card slot; and A first elastic member has one end connected to the first locking block and the other end connected to the first operating member. The first elastic member provides a driving force for the first clamping member to accommodate the first locking block in the first clamping groove.

5. The delivery device according to claim 2 or 3, characterized in that, The adjustment mechanism also includes a fixing seat, and the fixing seat includes: A first fixing block, mounted on the housing; The second fixed block is installed on the first fixed block, and the second fixed block can rotate unidirectionally relative to the first fixed block. The other end of the adjustment line is fixed on the second fixed block after being wound and reversed by the first winding wheel or after being wound and reversed by the second winding wheel.

6. The delivery device according to claim 1, characterized in that, The wire taking-up mechanism comprises: A reversing member connected to the housing, wherein the other end of the locking wire is axially extended in the housing and connected to the reversing member, and the reversing member can be used for winding the locking wire to change the extension direction so that the locking wire extends in a radial direction; A wire take-up member is disposed on the housing, and the wire take-up member can be used to fix the locking wire after the extension direction is changed; and A driving member is connected to the housing, and the driving member is connected to the wire taking-up member. The driving member can drive the wire taking-up member to rotate around the longitudinal center axis of the housing to reel in the locking wire and lock the adjustment wire.

7. The delivery device according to claim 6, characterized in that, The shell is provided with a mounting seat, the wire take-up member is rotatably connected to the mounting seat, the wire take-up member can rotate around its own central axis on the mounting seat, and the driving member is a driving knob rotatably assembled with the shell, and the driving knob is connected to the wire take-up member.

8. The delivery device according to claim 7, characterized in that, The wire taking-up mechanism further comprises a direction limiting component for limiting the unidirectional rotation of the driving knob, and the direction limiting component comprises: A first annular bevel rack, mounted on the housing; A locking block, on which a second annular helical rack that can mesh with the first annular helical rack is provided; and, A first elastic member, one end of which is connected to the locking block and the other end of which is connected to the driving knob. The first elastic member provides a driving force for the locking block so that the first annular helical rack and the second annular helical rack are tightly abutted and meshed.

9. The delivery device according to claim 7, characterized in that, The wire winding mechanism further includes an overload protection assembly for restricting the rotation stroke of the driving knob. The overload protection assembly includes: A first annular rack, which is installed on the wire winding member; A wire releasing block, on which a second annular rack that can mesh with the first annular rack is provided; and, A second elastic member, one end of which is connected to the wire releasing block and the other end of which is connected to the driving knob. The second elastic member is used to provide a driving force for the wire releasing block so that the first annular rack and the second annular rack are tightly abutted and meshed.

10. A conveying system, characterized in that, Including: An implantable device, which includes a body, an adjusting wire, and a locking wire. One end of the adjusting wire is connected to the body, one end of the locking wire is connected to the body, and the locking wire is used to lock the adjusting wire; The conveying device according to any one of claims 1-8, wherein the adjusting mechanism is connected to the other end of the adjusting wire, and the wire winding mechanism is connected to the other end of the locking wire.

11. The conveying system according to claim 10, characterized in that, The implantable device is a occluder. The body includes a first occluding disc and a second occluding disc that are oppositely arranged. One end of the adjusting wire is connected to the first occluding disc, and the other end passes through the second occluding disc and is then connected to the adjusting mechanism. A preformed knot sleeving the adjusting wire is formed on the locking wire, and the preformed knot is located on the side of the second occluding disc away from the first occluding disc.

12. The conveying system according to claim 10, characterized in that, The conveying device further includes a wire cutting mechanism, which is installed on the housing and is located at the distal ends of the adjusting mechanism and the wire winding mechanism. The wire cutting mechanism can cut the adjusting wire and the locking wire.

13. The conveying system according to claim 12, characterized in that, The wire cutting mechanism includes: A wire fixing seat, which is installed on the housing. A through hole through which the adjusting wire and the locking wire can pass is opened on the wire fixing seat; A cutting knife, which can move in the radial direction of the housing to cut the adjusting wire and the locking wire; A key, which is slidably assembled with the housing in the radial direction of the housing. The key is connected to the cutting knife; and, A first reset member, one end of which is connected to the wire fixing seat and the other end of which is connected to the key. The key overcomes the elastic force of the first reset member to drive the cutting knife to move towards the side for cutting the adjusting wire and the locking wire.

14. The conveying system according to claim 13, characterized in that, The wire cutting mechanism further includes an anti-misoperation component for locking or unlocking the key on the housing. The anti-misoperation component includes: A stop block, which is movably abutted against the key. When the stop block abuts against the key, the key and the housing are relatively fixed. When the stop block is separated from the key, the key can slide relative to the housing; A second reset member, one end of which is connected to the housing and the other end of which is connected to the stop block. The second reset member provides a driving force for the stop block to move in the axial direction of the housing so that the stop block is movably abutted against the key; and, The control member is slidably assembled with the housing along the axial direction of the housing. The control member is connected to the stopper. When the control member moves against the elastic force of the second restoring member, the stopper is separated from the button.

15. The conveying system according to claim 11, characterized in that, The conveying system further includes a knot protection mechanism for maintaining the preformed knot in an unlocked state. The knot protection mechanism includes: A protection tube, which is a hollow tube. The adjustment wire can pass through the protection tube, and the preformed knot is sleeved outside the protection tube; and A second operating member, which is slidably assembled with the housing along the axial direction of the housing. The second operating member is connected to the proximal end of the protection tube, and the second operating member can drive the protection tube to slide axially relative to the preformed knot.

16. The conveying system according to claim 15, characterized in that, The conveying system further includes a second locking assembly for locking or unlocking the second operating member on the housing. The second locking assembly includes: A second clamping member, which is installed on the housing, and a second clamping groove is formed on the second clamping member; A second clamping block, which is connected to the second operating member and can be movably received in or disengaged from the second clamping groove; and A second elastic member, one end of which is connected to the second clamping block, and the other end of which is connected to the second operating member. The second elastic member is used to provide a driving force for the second clamping member so that the second clamping block is received in the second clamping groove.

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