Medical instrument for interventional therapy

Abstract

A medical instrument for interventional therapy. An implant delivery mechanism (1000) comprises a puncture needle (1010) and a needle actuator (1020), and the needle actuator (1020) is connected to the puncture needle (1010) and moves synchronously in the axial direction of the puncture needle (1010); and a trigger mechanism (2000) is detachably connected to the implant delivery mechanism (1000), the trigger mechanism (2000) comprises a force storage release member (2010), and the force storage release member (2010) is connected to the needle actuator (1020) and moves synchronously.

Description

A medical device for interventional therapy

[0001] Related applications

[0002] This application claims the benefit of priority from the following Chinese patent application, the entire contents of which are incorporated by reference:

[0003] The application date is September 1, 2023, the application number is 202311119401.4, and the name is “A delivery system and medical device”;

[0004] The application date is September 4, 2023, the application number is 202311127211.7, and the name is “A delivery system and medical device”;

[0005] The application date is September 4, 2023, the application number is 202311126855.4, and the name is “A delivery system and medical device”;

[0006] The application date is September 5, 2023, the application number is 202311138868.3, and the name is "A medical device for interventional treatment." Technical Field

[0007] The present application relates to the technical field of medical devices, and in particular to a medical device for interventional treatment. Background Art

[0008] Benign prostatic hyperplasia (BPH) is one of the most common medical diseases affecting men, especially older men. It causes the internal area of ​​the prostate to squeeze the urethra, leading to clinical symptoms such as urinary retention, renal insufficiency, recurrent urinary tract infections, incontinence, hematuria and bladder stones.

[0009] Currently, BPH can be treated surgically. For example, an implant is inserted into the body using a device that uses its supportive properties to separate the two lobes of the prostate, freeing them from obstruction. Specifically, this device first inserts the implant into the body using a needle, then withdraws the needle, releases the proximal anchor, and finally uses a shearing mechanism to shear off any excess connectors on the implant.

[0010] However, existing delivery systems can only complete a single cycle of needle release, needle retraction, proximal anchor release, and shear mechanism actuation. A single surgical procedure typically requires multiple cycles to place multiple implants, requiring multiple instrument changes to complete the procedure. This complicates the operation, increases surgical difficulty, and prolongs surgical time. It also increases the space required to store instruments on the operating table and generates excessive medical waste. Furthermore, each instrument change requires removing the endoscope from the previous instrument and installing it on the next, increasing the risk of endoscope damage and shortening its lifespan.

[0011] In addition, existing instruments have numerous operating buttons, which makes it difficult for medical staff to master them due to the long learning curve.

[0012] Summary of the Invention

[0013] An embodiment of the present application provides a medical device for interventional treatment, which integrates functions such as puncture, retraction, tightening and releasing proximal anchors, and adopts a single trigger mechanism to reduce the number of instruments during surgery, reduce the difficulty of operation, shorten the operation time and improve the surgical effect.

[0014] An embodiment of the present application provides a medical device for interventional treatment, which is used to implant an implant into human tissue. The implant includes a distal anchor and a connector connected to each other. The device for interventional treatment includes:

[0015] An implant delivery mechanism, comprising a puncture needle and a needle actuator, wherein the puncture needle is used to accommodate the distal anchor and the connector, and the needle actuator is connected to the puncture needle and moves synchronously along the axial direction of the puncture needle;

[0016] A trigger mechanism is detachably connected to the implant delivery mechanism, wherein the trigger mechanism includes a force-storage release member connected to the needle actuator and moves synchronously.

[0017] The details of one or more embodiments of the present application are set forth in the accompanying drawings and the description below, and other features, objects, and advantages of the present application will be apparent from the description, the drawings, and the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] FIG1 is a schematic structural diagram of an apparatus for interventional treatment in some embodiments of the present application;

[0019] FIG2 is a disassembled schematic diagram of the implant delivery mechanism and the trigger mechanism;

[0020] FIG3 is a schematic diagram of the implant structure;

[0021] FIG4 is a partial schematic diagram of an implant delivery mechanism in some embodiments of the present application;

[0022] FIG5a is a schematic diagram of the structure of the installation locking mechanism in some embodiments of the present application;

[0023] FIG5 b is a schematic diagram showing a partial installation of the locking mechanism from another angle in some embodiments of the present application;

[0024] FIG6 is a partial schematic diagram of a trigger mechanism in some embodiments of the present application;

[0025] FIG7 is a schematic diagram of a reset mechanism in some embodiments of the present application;

[0026] FIG8 is a schematic diagram of another reset mechanism in some embodiments of the present application;

[0027] FIG9 is a schematic diagram of a state where a locking mechanism is installed to restrict a needle actuator in some embodiments of the present application;

[0028] FIG10 is a schematic diagram of a state in which a locking mechanism is installed to release the restriction of a needle actuator in some embodiments of the present application;

[0029] FIG11 is a schematic diagram of a force-storage release member in a restricted state in some embodiments of the present application;

[0030] FIG12 is a schematic diagram of a force-accumulating release member in a released state in some embodiments of the present application;

[0031] FIG13 is a schematic diagram of a limiting pin in a restricted state in some embodiments of the present application;

[0032] FIG14 is a schematic diagram of a limit pin releasing state in some embodiments of the present application;

[0033] FIG15 is a partial schematic diagram of a trigger mechanism in some embodiments of the present application;

[0034] FIG16 is an exploded view of the structure shown in FIG15;

[0035] FIG17 is a schematic diagram of a partial assembly of an implant delivery mechanism and a trigger mechanism in some embodiments of the present application;

[0036] FIG18 is a schematic structural diagram of an apparatus for interventional treatment in some embodiments of the present application;

[0037] FIG19 is a schematic diagram of a partial structure of an implant delivery mechanism in some embodiments of the present application.

[0038] FIG20 is a schematic structural diagram of a delivery system in some embodiments of the present application;

[0039] FIG21 is an enlarged schematic diagram of the structure shown in FIG20 at point M;

[0040] FIG22 is a schematic diagram of the structure shown in FIG20 from another angle;

[0041] FIG23 is a schematic diagram of the assembly of a needle actuator and a wire actuator in some embodiments of the present application;

[0042] FIG24 is a schematic structural diagram of a limiting mechanism in some embodiments of the present application;

[0043] FIG25 is a schematic diagram of the limiting state of the limiting mechanism shown in FIG24;

[0044] FIG26 is a schematic diagram of a limit release state of the limit mechanism shown in FIG24;

[0045] FIG27 is a schematic diagram of a partial structure of the limiting mechanism shown in FIG24;

[0046] FIG28 is a schematic diagram of a partial structure of the limiting mechanism shown in FIG24 from another angle;

[0047] FIG29 is a schematic structural diagram of another limiting mechanism in some embodiments of the present application;

[0048] FIG30 is a schematic diagram of the limiting state of the limiting mechanism shown in FIG29;

[0049] FIG31 is a schematic diagram of the limiting mechanism shown in FIG29 in a state where the limiting mechanism is released when moving toward the proximal end;

[0050] FIG32 is a schematic diagram of the limiting mechanism shown in FIG29 in the state of releasing the limiting mechanism when moving toward the distal end.

[0051] FIG33 is a schematic structural diagram of a delivery system in some embodiments of the present application;

[0052] FIG34 is an exploded view of the structure shown in FIG33;

[0053] FIG35 is a schematic diagram of a partial structure of the structure shown in FIG33;

[0054] FIG36 is a schematic diagram of another state of the structure shown in FIG35;

[0055] FIG37 is a schematic diagram of the force-accumulating release member shown in FIG33 moving from the distal end to the proximal end;

[0056] FIG38 is a schematic structural diagram of a delivery system in some other embodiments of the present application;

[0057] FIG39 is a schematic structural diagram of a delivery system in some other embodiments of the present application;

[0058] Figure 40 is a schematic structural diagram of the conveying system in other embodiments of the present application.

[0059] FIG41 is a schematic structural diagram of a delivery system in some embodiments of the present application;

[0060] FIG42 is an exploded view of the structure shown in FIG41;

[0061] FIG43 is a schematic diagram of a partial structure of the structure shown in FIG41;

[0062] FIG44 is a schematic diagram of another state of the structure shown in FIG43;

[0063] FIG45 is a schematic diagram of the proximal anchor actuator wheel shown in FIG41;

[0064] FIG46 is a schematic diagram of the proximal anchor actuator wheel shown in FIG41 triggering the proximal anchor release mechanism;

[0065] FIG47 is a schematic structural diagram of another transmission mechanism in other embodiments of the present application;

[0066] FIG48 is a schematic structural diagram of yet another transmission mechanism in other embodiments of the present application;

[0067] Figure 49 is a structural schematic diagram of another transmission mechanism in other embodiments of the present application.

[0068] Description of reference numerals:

[0069] 1000 implant delivery mechanism, 1001 first shell, 10011 cover plate, 10012 opening, 10013 locking tongue channel, 10014 through hole, 10015 knob limit pin, 10016 limit slot, 1002 first inner cavity, 1003 delivery pipe, 1004 endoscope pipe, 1005 sheath, 1006 proximal loading tube, 1007 push rod, 1008 push rod push block, 1009 push rod limiter, 1010 puncture needle, 1011 loading tube connector, 1012 tension spring, 1013 shear limiter, 10131 limiter shaft, 1020 needle actuator, 1021 first limit slot, 1022 protrusion, 1040 connector, 1050 distal anchor, 1060 proximal anchor,

[0070] 2000 trigger mechanism, 2001 second shell, 2002 second inner cavity, 2003 mounting groove, 2010 power storage release member, 20101 notch, 2011 limiting groove, 2012 actuating protrusion, 2013 slot, 2014 second limiting claw, 2015 reset elastic member, 2020 driving loader, 2021 rotating shaft, 2023 transmission gear, 2024 first limiting claw, 2030 driving elastic member, 2031 transmission wheel, 2032 lever, 2040 proximal anchoring actuating wheel; 2041 torsion spring, 2042 tension spring, 2043 traction rope, 2044 column, 2050 actuating lever,

[0071] 3001 knob, 3002 lock tongue, 3003 first slot, 3004 second slot, 3005 center hole, 3007 protrusion, 3008, 3009 first guide groove,

[0072] 4001 first limiting rod, 4002 second limiting rod, 4003 limiting pin, 40031 flange, 40032 limiting step, 4004 limiting plate, 40041 fixed rotating shaft, 40042 pushing end, 40043 limiting end.

[0073] 21a first mounting hole, 22a outer surface of the needle actuator,

[0074] 1030 wire actuator, 31a second mounting hole,

[0075] 41a Connector guide tube,

[0076] 511a slide groove, end portion of 5111a slide groove, 512a protrusion, 52a first reset elastic member, 53a guide rod, 531a one end of the guide rod, 532a the other end of the guide rod,

[0077] 611a first limiting claw, 612a limiting slot, 622a boss, 631a second resetting elastic member, 641a second limiting claw, 642a limiting tooth, 651a buckle plate, 6511a slideway.

[0078] 101b notch, 102b rack, 102ab ridge, 103b slot,

[0079] 21b shaft,

[0080] 31b drives one end of the elastic member, and 32b drives the other end of the elastic member.

[0081] 41b driving wheel, 411b driving wheel cover, 412b inner wall, 42b driven wheel, 421b gear teeth, 421ab protrusion, 422b guide bar, 43b shift lever, 44b protrusion, one side of 441b protrusion,

[0082] 50b reset elastic member,

[0083] 60b limit claw, 61b pin,

[0084] 70b limit rod.

[0085] 41c actuating protrusion, 42c slot, 43c gear teeth,

[0086] 21c shaft,

[0087] 31c transmission wheel, 311c inner wall of transmission wheel cover, 32c lever,

[0088] 40c limit claw,

[0089] 50c reset elastic member,

[0090] 61c worm, 62c worm wheel, 63c cam,

[0091] 71c balance wheel, 72ac, 72bc pawls,

[0092] 90c Release lever. DETAILED DESCRIPTION

[0093] In order to make the purpose, features and beneficial effects of the present application more obvious and easy to understand, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. It will be understood that the specific embodiments described below are only used to explain the present application and are not intended to limit the present application. In addition, the same or similar reference numerals may be used in the figures to refer to the same or similar elements in different embodiments, and the descriptions of the same or similar elements in different embodiments and the descriptions of related technical elements, features, effects, etc. may be omitted. In the description of the present application, "proximal end" represents the end close to the operator, and "distal end" represents the end away from the operator; "implantation" and "intervention" have the same meaning. In the description of the present application, "counterclockwise", "clockwise", "left" and "right" are all referenced to the directions in Figure 1.

[0094] 1 to 3 , an embodiment of the present application provides a medical device for interventional treatment. The medical device for interventional treatment is used to deliver an implant to a specified position in the patient's body. For example, the implant includes a distal anchor 1050, a connector 1040, and a proximal anchor 1060 ( FIG. 3 ). After implantation into the prostate, the implant mechanically separates the left lobe of the prostate from the right lobe of the prostate, and pushes the prostate hyperplasia tissue that compresses the urethra back to a distant location to treat benign prostatic hyperplasia. The specific operation of the implant intervention is as follows: First, release the puncture needle 1010 to pierce the prostate tissue through the puncture needle 1010. Among them, the distal anchor 1050 and the connector 1040 fixedly connected thereto are arranged in the puncture needle 1010 and released synchronously with the puncture needle 1010; secondly, the puncture needle 1010 is withdrawn so that the distal anchor 1050 is anchored on the outer wall of the prostate tissue away from the urethra; again, the proximal anchor 1060 is released so that the proximal anchor is fixedly connected to the connector 1040 and the proximal anchor 1060 is anchored on the inner wall of the urethra; finally, the excess connector 1040 on the implant is cut off; the intervention is completed.

[0095] Specifically, the medical devices used for interventional treatment include:

[0096] Implant delivery mechanism 1000, implant delivery mechanism 1000 includes a puncture needle 1010 and a needle actuator 1020, the puncture needle 1010 is used to accommodate the interconnected distal anchor 1050 and connector 1040; the needle actuator 1020 is connected to the puncture needle 1010 and moves synchronously along the axial direction of the puncture needle 1010, and the movement of the puncture needle 1010 toward the distal end drives the distal anchor 1050 and connector 1040 to move toward the distal end, wherein, the release of the puncture needle 1010 in the distal direction means that the puncture needle 1010 enters the human body, and the distal anchor 1050 and connector 1040 pass through the human tissue along with the puncture needle 1010.

[0097] The trigger mechanism 2000 is connected to the implant delivery mechanism 1000. The trigger mechanism 2000 includes a force release member 2010. The movement of the force release member 2010 drives the synchronous movement of the puncture needle 1010. The force release member 2010 retracts in the proximal direction, that is, the puncture needle 1010 retracts outward from the human tissue, and the distal anchor 1050 is left in the body.

[0098] Specifically, the implant delivery mechanism 1000 is detachably connected to the trigger mechanism 2000 .

[0099] In some embodiments of the present application, the implant delivery mechanism 1000 also includes a first shell 1001, and the trigger mechanism 2000 also includes a second shell 2001; the first shell 1001 is provided with a first inner cavity 1002 (refer to Figure 4); the second shell 2001 is provided with a second inner cavity 2002 (refer to Figures 7 and 8); the first shell 1001 is detachably installed in the installation groove 2003 of the second shell 2001.

[0100] Referring to Figures 2, 17, and 18, first housing 1001 includes a delivery conduit 1003, which communicates with first inner cavity 1002 and is configured to accommodate puncture needle 1010. Puncture needle 1010 and needle actuator 1020 are connected within first inner cavity 1001. When needle actuator 1020 moves distally or proximally, puncture needle 1010 synchronously moves distally or proximally along delivery conduit 1003. The distal end of delivery conduit 1003 is provided with a first opening through which the distal end of puncture needle 1010 extends.

[0101] The interventional therapy medical device also includes an endoscope channel 1004, which is connected to the second housing 2001 and is used to accommodate the endoscope 5000. When the first housing 1001 is mounted on the second housing 2001, the endoscope channel 1004 is arranged parallel to the delivery conduit 1003. By placing the endoscope channel 1004 on the trigger mechanism 2000, the endoscope does not need to be removed after each implant is implanted, thus preventing damage to the endoscope during disassembly and installation.

[0102] The medical device used for interventional treatment also includes a sheath 1005, which is suitable for being placed on the outside of the endoscope channel 1004 and the delivery pipe 1003 when the first shell 1001 is installed on the second shell 2001. On the one hand, it plays a role in protecting the human urethra and the instrument, and on the other hand, it limits the relative movement of the endoscope and the delivery pipe 1003, ensuring that the entire implantation process is carried out visually.

[0103] 2 , in some embodiments of the present application, the medical device for interventional therapy further includes a mounting locking mechanism, which is disposed on one of the first housing 1001 and the second housing 2001. Considering that the second housing 2001 will contain a large number of components to implement the corresponding functions of the trigger mechanism 2000, it is preferred that the mounting locking mechanism be disposed on the first housing 1001 to achieve a more reasonable layout and miniaturization of the interior of the second housing 2001.

[0104] 5a and 5b , the mounting locking mechanism includes a knob 3001 and a lock tongue 3002. The lock tongue 3002 has a protrusion 3007, and the bottom of the knob 3001 has a first guide groove 3008 that cooperates with the protrusion 3007. Since the first guide groove 3008 limits the protrusion 3007, rotation of the knob 3001 can cause the protrusion 3007 to move in the first guide groove 3008. The first housing 1001 includes a cover plate 10011. The knob 3001 is mounted in an opening 10012 on the cover plate 10011. A lock tongue channel 10013 is provided in the opening 10012 for accommodating the lock tongue 3002. The lock tongue channel 10013 defines a first slot 3003 on the side wall of the cover plate 10011. As the protrusion 3007 moves back and forth in the first guide groove 3008, the lock tongue 3007 moves in the lock tongue channel 10013 and extends and retracts at the first slot 3003. Preferably, the first guide groove 3008 is an arcuate groove, and the lock tongue channel 10013 is a straight channel. When the lock tongue 3007 is restrained by both, the reciprocating rotational motion of the knob 3001 is converted into the linear extension and retraction motion of the lock tongue 3007. A through hole 10014 is provided at the bottom of the lock tongue channel 10013 , and the knob limiting pin 10015 passes through the through hole 10014 and docks with the central hole 3005 at the bottom of the knob 3001 to achieve the installation of the knob 3001 on the cover plate 10011 .

[0105] The second housing 2001 is provided with a second slot 3004 adapted to accommodate the locking tongue 3002. Once the implant delivery mechanism 1000 is installed, the first slot 3003 and the second slot 3004 are aligned. In one embodiment, when the knob 3001 is rotated clockwise, the locking tongue 3002 extends from the first slot 3003 and inserts into the second slot 3004, restricting movement of the first housing 1001 relative to the second housing 2001. When the knob 3001 is rotated counterclockwise, the locking tongue 3002 is removed from the second slot 3004, releasing the restriction on the first housing 1001. In this state, the first housing 1001 can be removed from the mounting slot 2003 of the second housing 2001. It will be appreciated that in other embodiments, the knob 3001 can be rotated clockwise to retract the locking tongue 3007, or counterclockwise to extend it.

[0106] Preferably, in order to improve the stability of the installation and locking, the locking tongues 3007 can be two symmetrically arranged, and accordingly, the first guide grooves 3008 / 3009, the first slot 3003, and the second slot 3004 can also be two symmetrically arranged.

[0107] 9 and 10 , in some embodiments of the present application, the mounting locking mechanism further comprises a first limiting rod 4001, which is connected to the knob 3001 and rotates synchronously, i.e., the clockwise and counterclockwise rotation of the knob 3001 drives the first limiting rod 4001 to rotate in the same direction. When the implant delivery mechanism 1000 is mounted on the trigger mechanism 2000, the first housing 1001 is first placed in the mounting groove 2003 of the second housing 2001. At this time, the knob 3001 is in an unlocked state, i.e., the locking tongue 3002 is not extended and the first housing 1001 can be removed from the second housing 2001. In this state, the first limiting rod 4001 is locked in the first limiting groove 1021 of the needle actuator 1020 of the implant delivery mechanism 1000 to limit the movement of the needle actuator 1020, ensuring that the puncture needle 1010 will not be accidentally released when the knob 3001 is unlocked, thereby improving safety. After placing the implant delivery mechanism 1000, rotate the knob 3001 clockwise to complete the installation of the implant delivery mechanism 1000. At this time, the locking tongue 3002 is inserted into the first slot 3003 and the second slot 3004, the first shell 1001 and the second shell 2001 are locked, and the first limiting rod 4001 is disengaged from the first limiting slot 1021 as the knob 3001 rotates, thereby releasing the restriction on the needle actuator 1020 and turning the puncture needle 1010 into a releasable state.

[0108] In some embodiments of the present application, the mounting locking mechanism further includes a second limiting rod 4002, which is connected to and rotates synchronously with the knob 3001. Clockwise and counterclockwise rotation of the knob 3001 drives the second limiting rod 4002 to rotate in the same direction. A limiting groove 10016 is provided on the cover plate 10011 to accommodate and allow movement of the second limiting rod 4002. The second limiting rod 4002 is adapted to abut against one end of the limiting groove 10016 after the knob 3001 is locked in place, thereby limiting further clockwise rotation of the knob 3001 and preventing damage to the device caused by excessive rotation of the knob 3001. It is understood that if the mounting locking mechanism is provided on the second housing 2001, the limiting groove 10016 may also be provided on the trigger mechanism 2000.

[0109] Preferably, the first limiting rod 4001 can also be accommodated in the limiting groove 10016 and can move therein.

[0110] 6 , in some embodiments of the present application, the trigger mechanism 2000 includes a driving loader 2020 , a transmission gear 2023 , and a force-storage release member 2010 that are sequentially connected.

[0111] Force release member 2010 is provided with a notch 20101. Force release member 2010 is connected to puncture needle 1010 via notch 20101. Specifically, needle actuator 1020 is provided with a bump 1022 that mates with notch 20101. Notch 20101 snaps onto bump 1022, connecting force release member 2010 to needle actuator 1020 and thereby indirectly connecting force release member 2010 to puncture needle 1010. It is understood that to ensure the stability of the connection between notch 20101 and bump 1022, at least one of them may be designed accordingly, such as by adding a groove structure to facilitate snap-fit ​​connection, designing a rough surface to increase friction, or utilizing magnetic attraction to increase coupling force. The force release member 2010 is adapted to reciprocate between the distal end and the proximal end. Specifically, the force release member 2010 can be released in the distal direction or withdrawn in the proximal direction, thereby driving the puncture needle 1010 to be synchronously released in the distal direction or withdrawn in the proximal direction. When the implant delivery mechanism 1000 is mounted on the trigger mechanism 2000, the protrusion 1022 of the needle actuator 1020 is docked with the recess 20101 of the force release member 2010. Optionally, the needle actuator 1020 and the force release member 1022 can be connected within the first housing 1001, within the second housing 2001, or in the gap between the first housing 1001 and the second housing 2001. In the embodiment shown in the drawings of this application specification, the needle actuator 1020 and the force release member 1022 are connected within the second housing 2001.

[0112] The driving loader 2020 is connected to the force release member 2010 via a transmission gear 2023, and the three are transmitted through a sawtooth structure. The driving loader 2020 is sleeved on the rotating shaft 2021 and can be rotated and pressed in a first direction around the rotating shaft 2021 to drive the transmission gear 2023 and the force release member 2010. Considering that the implantation process is a multi-step operation, in order to improve the convenience of operation, it is a preferred solution to enable the driving loader 2020 to perform multiple functions through a single action. Therefore, the driving loader 2020 can also be rotated in the opposite direction of the first direction to reset, which will be described in detail later. For the embodiments shown in the drawings of this application specification, the first direction is counterclockwise.

[0113] Once implant delivery mechanism 1000 is in place, the implantation process can be completed sequentially. First, puncture needle 1010 is released. During this process, puncture needle 1010 and force release member 2010 move synchronously from proximal to distal. To achieve this, the outer periphery of transmission gear 2023 includes adjacent limiting and non-limiting portions, where the limiting portions are gear teeth and the non-limiting portions are toothless surfaces. Trigger mechanism 2000 also includes a drive elastic member 2030, the distal end of which is fixedly mounted to second housing 2001, while the proximal end is connected to force release member 2010 and moves synchronously. During the step of releasing the puncture needle 1010, at least one gear tooth on the edge of the limiting portion engages with the serrations of the force release member 2010, and the driving elastic member 2030 is in a stretched state. After the implant delivery mechanism 1000 is installed, the driving loader 2020 is pressed, and the transmission gear 2023 rotates, releasing the engagement between the limiting portion and the force release member 2010, and the non-limiting portion contacts the force release member 2010. Due to the lack of a limit, the driving elastic member 2030 contracts from the stretched state to the unstretched state, and the proximal end of the driving elastic member 2030 pulls the force release member 2010 toward the distal end, thereby releasing the puncture needle 1010. The driving elastic member 2030 may be a spring, a rubber band, a rubber ring, etc.

[0114] The puncture needle 1010 is released, allowing it to carry the distal anchor 1050 and connector 1040 through the prostate tissue. The puncture needle 1010 is then withdrawn, leaving the distal anchor 1050 on the outer wall of the prostate tissue. After the puncture needle 1010 is released, the limiting portion and the force-accumulating release member 2010 contact each other again, returning to the engaged limiting state. To retract the puncture needle, the drive loading member 2020 must be pressed again. During this process, the limiting portion of the transmission gear 2023 remains in contact with the force-accumulating release member 2010, driving the force-accumulating release member 2010 toward the proximal end and simultaneously stretching the drive elastic member 2030. Because the operation of withdrawing the puncture needle 1010 also accumulates force for the drive elastic member 2030, when a new implant delivery mechanism 1000 is replaced after a set of implants is implanted, the puncture needle 1010 can be fired directly without recharging force.

[0115] It is understandable that when the device leaves the factory, in order to ensure the service life of the driving elastic member 2030, the driving elastic member 2030 is usually shipped on the shelf in an unstretched state or a slightly stretched state. In this case, it is necessary to first press the driving loader 2020 to stretch the driving elastic member 2030 to store force, and at the same time move the force release member 2010 to the installation position, and then install the implant delivery mechanism 1000 to the trigger mechanism 2000 before the puncture needle 1010 can be fired.

[0116] 11 and 12 , in some embodiments of the present application, the trigger mechanism 2000 further includes a limit pin 4003, which is adapted to limit the maximum proximal distance of the force-accumulating release member 2010 when the puncture needle 1010 is retracted. Specifically, the limit is achieved by a flange 40031 on the limit pin 4003 being engaged with a limit groove 2011 of the force-accumulating release member 2010. When the force-accumulating release member 2010 moves proximally to the flange 40031, it indicates that the elastic member 2030 has completed force accumulation. The limit pin 4003 prevents the force-accumulating release member 2010 from continuing to move proximally and disengaging from the limit portion of the transmission gear 2023, thereby causing an accidental firing of the puncture needle 1010. Next, the operator applies external force to press or lift the limit pin 4003 to move it a certain distance, and the flange 40031 disengages from the limit groove 2011 to release the restriction on the force release member 2010. The operator presses the drive loader 2020 again to rotate it counterclockwise, and drives the force release member 2010 to continue moving toward the proximal end. The force release member 2010 is disengaged from the transmission gear 2023 and is released toward the distal end under the drive of the elastic potential energy of the drive elastic member 2030.

[0117] 13 , in some embodiments of the present application, the trigger mechanism 2000 further includes a limit plate 4004, which is translationally disposed in the second inner cavity 2002 and adapted to be engaged with the limit step 40032 of the limit pin 4003 when the lock tongue 3002 is not inserted into the second slot 3004, thereby limiting the movement of the limit pin 4003. Referring to FIG14 , the limit plate 4004 includes a pushing end 40042 and a limiting end 40043. When the lock tongue 3002 is inserted into the second slot 3004, the pushing end 40042 of the limit plate 4004 is pushed by the lock tongue 3002 to translate leftward, and the limiting end 40043 disengages from the limiting step 40032, thereby releasing the limit pin 4003 from its restriction. That is, when the first housing 1001 is not locked to the second housing 2001, the limit pin 4003 is blocked by the limit plate 4004 and cannot move, preventing the device from being accidentally touched before use, thereby affecting the sequential operation of the implantation process and improving safety. When the first housing 1001 is locked to the second housing 2001, the limit plate 4004 releases the lock on the limit pin 4003, and the limit pin 4003 can move under the pressure or pull of medical personnel to disengage the flange 40031 from the limit groove 2011. The limit plate 4004 also includes a fixed shaft 40041, on which a reset torsion spring is sleeved. When the limit plate 4004 is pushed and translated by the lock tongue 3002, the reset torsion spring is compressed. When the lock tongue 3002 is pulled out of the second slot 3004, the limit plate 4004 is driven to translate and reset to re-engage the limit step 40032 of the limit pin 4003.

[0118] Specifically, taking FIG6 as an example, to facilitate operation by the operator, the trigger mechanism 2000 may include a handle, and the drive loader 2020 is a pressing rod on the handle, so that the operator can hold it conveniently. During the operation, the operator holds the drive loader 2020 and applies a first external force F toward the proximal end to the drive loader 2020, thereby causing the drive loader 2020 to rotate counterclockwise about the rotation axis 2021. Preferably, the handle includes a handle housing (i.e., a second housing 2001), and the force release member 2010 and the rotation axis 2021 are disposed within the handle housing (i.e., a second inner cavity 2002).

[0119] In order to achieve the rotation and reset of the driving loader 2020 in the opposite direction of the first direction, in some embodiments of the present application, the trigger mechanism 2000 also includes a reset mechanism, which is suitable for driving the driving loader 2020 to rotate and reset around the rotating shaft 2021 after the first external force F is removed.

[0120] Referring to Figure 7, in a specific embodiment of the present application, the reset mechanism is a torsion spring 2041, and the two ends of the torsion spring 2041 are respectively connected to the rotating shaft 2021 and the driving loader 2020. When the driving loader 2020 is not subjected to force, the torsion spring 2041 is in a natural state without deformation. Pressing the driving loader 2020 to rotate it counterclockwise, the torsion spring 2041 is compressed. After the first external force F acting on the driving loader 2020 is removed, the elastic potential energy generated by the compression of the torsion spring 2041 is released, pushing the driving loader 2020 to rotate clockwise around the rotating shaft 2021 to reset.

[0121] Referring to Figure 8, in another specific embodiment of the present application, the reset mechanism includes a tension spring 2042 and a traction rope 2043 that are connected to each other. The lower end of the tension spring 2042 is fixedly connected to the second shell 2001, and the upper end of the traction rope 2043 is fixedly connected to the drive loader 2020, and the lower end of the traction rope 2043 is connected to the upper end of the tension spring 2042. When the drive loader 2020 rotates counterclockwise under the action of an external force, the upper end of the traction rope 2043 rotates counterclockwise synchronously, and the lower end is displaced upward, and the tension spring 2042 is stretched under the drive of the lower end of the traction rope 2043. After the external force acting on the drive loader 2020 is removed, the elastic potential energy generated by the stretching of the tension spring 2042 is released, and the drive loader 2020 is pulled by the traction rope 2043 to rotate clockwise around the rotating shaft 2021 to reset.

[0122] It is understood that to ensure that the lower end of the traction rope 2043 is sufficiently displaced to stretch the tension spring 2042, the traction rope 2043 is preferably inelastic or has minimal elasticity. To reduce wear between the traction rope 2043 and the second housing 2001 and to increase the travel of the lower end of the traction rope 2043, a column 2044 can be provided at an appropriate location so that the lower end of the traction rope 2043 is wound around the column before being connected to the tension spring 2042.

[0123] To prevent the transmission gear 2023 and the force release member 2010 from moving as the driving loader 2020 resets, the trigger mechanism 2000 further includes a first limiting pawl 2024. The first limiting pawl 2024 is mounted on the second housing 2001 and abuts against the teeth of the limiting portion of the transmission gear 2023. When the driving loader 2020 rotates about the rotation axis 2021 in a first direction to drive the transmission gear 2023, the first limiting pawl 2024 is configured to allow the limiting portion of the transmission gear 2023 to slide past the first limiting pawl 2024, thereby enabling the transmission gear 2023 to rotate in the opposite direction of the first direction. Furthermore, when the driving loader 2020 rotates in the opposite direction of the first direction to reset, the first limiting pawl 2024 is configured to engage the teeth of the limiting portion of the transmission gear 2023, thereby preventing the transmission gear 2023 from rotating in the first direction. This ensures that the force release member 2010 remains stationary and prevents the force release member 2010 from moving distally as the driving loader 2020 resets.

[0124] In this embodiment of the present application, the trigger mechanism 2000 is used to deliver the implant to a designated location within the patient's body. The release member 2010 is reciprocated between the distal and proximal ends to release and retract the puncture needle 1010. This integrates multiple steps into a single component (i.e., the drive loader 2020) for control, making the implant procedure smoother and more coherent, reducing operational difficulty and improving surgical outcomes.

[0125] The withdrawal of puncture needle 1010 completes the release of distal anchor 1050, and the operator then proceeds to implant proximal anchor 1060 into the human body. To achieve this, the delivery conduit 1003 on the first housing 1001 also houses a proximal loading tube 1006. Proximal loading tube 1006 is arranged in parallel with puncture needle 1010 and has a second opening (not shown) corresponding to the first opening of delivery conduit 1003. When puncture needle 1010 is fired, its distal end passes through the first opening and the second opening. After puncture needle 1010 is withdrawn, connector 1040 remains in the human tissue, with one end connected to distal anchor 1050 and the other end passing through the first opening and the second opening to connect to the proximal end of implant delivery mechanism 1000. The proximal anchor 1060 is loaded inside the proximal loading tube 1006 and is located on the side of the second opening close to the proximal end, with its V-shaped opening facing the distal end. After the proximal anchor 1060 is released, the V-shaped opening is clamped on the connector 1040, and the prostate tissue is suspended between the distal anchor 1050 and the proximal anchor 1060.

[0126] 20 , in order to release the proximal anchor 1060, the implant delivery mechanism 1000 further includes a push rod 1007 and a push rod push block 1008 connected to each other, and a push rod stopper 1009 abutting against the push rod push block 1008. The push rod push block 1008 and the push rod 1007 connected to each other can move synchronously, with the distal end of the push rod 1007 extending into the proximal loading tube 1006. The distal end of the push rod 1007 can be used to push the proximal anchor 1060 out of the proximal loading tube 1006, thereby completing the connection between the proximal anchor 1060 and the connector 1040. The push rod limiter 1009 limits the push rod push block 1008 to prevent the proximal anchor 1060 from being released at an inappropriate time. When the push rod limiter 1009 releases the limit on the push rod push block 1008, the push rod push block 1008 can move toward the distal end and drive the push rod 1007 to move together.

[0127] 16 and 17 , the trigger mechanism 2000 further includes a proximal anchor actuating wheel 2040 ; when the proximal anchor actuating wheel 2040 abuts against the push rod limiter 1009 and generates movement, the push rod limiter 1009 disengages from the push rod push block 1008 , and the push rod 1007 pushes the proximal anchor 1060 to connect to the connecting member 1040 .

[0128] The drive loader 2020 is connected to the proximal anchoring actuating wheel 2040. The drive loader 2020 is configured to reciprocate about a rotation axis 2021, as described above. The proximal anchoring actuating wheel 2040 is provided with gear teeth. The trigger mechanism 2000 also includes a second limiting pawl 2014 mounted on the second housing 2001. The second limiting pawl 2014 abuts against the gear teeth of the proximal anchoring actuating wheel 2040, allowing the proximal anchoring actuating wheel 2040 to rotate in only one direction under the action of the drive loader 2020. Specifically, during surgery, the operator grasps the drive loader 2020 and applies a proximal force F to the drive loader 2020, causing the drive loader 2020 to rotate counterclockwise about the rotation axis 2021. When the drive loader 2020 rotates counterclockwise about the rotation axis 2021, the proximal anchoring actuating wheel 2040 is driven to rotate synchronously. When the driving loader 2020 rotates clockwise around the rotation axis 2021 to reset, the proximal anchoring actuating wheel 2040 remains stationary.

[0129] In some embodiments, an actuating rod 2050 is provided on the push rod limiter 1009, and the free end of the actuating rod 2050 extends out of the first shell 1001. When the implant delivery mechanism 1000 is installed in place on the trigger mechanism 2000, the actuating rod 2050 extends into the second inner cavity 2002, thereby being able to come into contact with the proximal anchoring actuating wheel 2040 in the second inner cavity 2002.

[0130] In some embodiments, an actuating projection 2012 is provided on the proximal anchor actuating wheel 2040. As the driving loader 2020 drives the proximal anchor actuating wheel 2040, the actuating projection 2012 moves relative to the push rod stopper 1009. Because the implantation procedure includes multiple steps, and releasing the proximal anchor is only one of the steps, it is necessary to operate the driving loader 2020 to rotate and reset multiple times, gradually driving the proximal anchor actuating wheel 2040 to rotate, completing each step before releasing the proximal anchor 1060 and preventing premature release of the proximal anchor 1060. This is until the actuating projection 2012 moves to abut the actuating lever 2050. The actuating projection 2012 then actuates the free end of the actuating lever 2050, causing the push rod stopper 1009 to disengage from the push rod pusher 1008, and the push rod 1007 pushes the proximal anchor 1060 to connect to the connector 1040. The design of the proximal anchoring actuator wheel 2040 realizes the intermittent release of the proximal anchor, making the various operation steps of the implantation surgery smoother and more coherent. Combined with the control of the puncture needle 1010 by the aforementioned driving loader 2020, the purpose of completing multiple steps of the operation with a single component is achieved, which reduces the difficulty of operation and improves the surgical effect.

[0131] It is understandable that the contact position between the actuating protrusion 2012 and the actuating lever 2050 in the above embodiment may also be located in the first inner cavity 1002 , for example, the actuating protrusion 2012 extends out of the second shell 2001 and into the first inner cavity 1002 , and contacts the free end of the actuating lever 2050 in the first inner cavity 1002 .

[0132] The trigger mechanism 2000 also includes a proximal transmission mechanism, which drives the loader 2020 in transmission connection with the proximal anchoring actuating wheel 2040. Specifically, the proximal transmission mechanism includes a transmission wheel 2031 and a deflector 2032. The loader 2020 engages with the transmission wheel 2031 for transmission. The deflector 2032 is mounted on the transmission wheel 2031, and rotation of the transmission wheel 2031 drives the deflector 2032 to rotate synchronously. The proximal anchoring actuating wheel 2040 is provided with evenly distributed slots 2013 along its circumference. The deflector 2032 interacts with the slots 2013 to drive the proximal anchoring actuating wheel 2040 to rotate.

[0133] Specifically, when the driving loader 2020 rotates counterclockwise under the action of the force F applied by the operator, the transmission wheel 2031 rotates clockwise, thereby driving the shift rod 2032 to rotate synchronously, and the free end of the shift rod 2032 abuts against the slot 2013, pushing the proximal anchoring actuator wheel 2040 to rotate counterclockwise. When the driving loader 2020 rotates clockwise to reset, the driving transmission wheel 2031 rotates counterclockwise. The proximal anchoring actuating wheel 2040 cannot rotate clockwise due to the restriction of the second limiting claw 2014. The deflector rod 2032 is rotatably arranged relative to the transmission wheel 2031, and a reset elastic member 2015 (i.e., a torsion spring) is provided between the deflector rod 2032 and the transmission wheel 2031. When the deflector rod 2032 rotates counterclockwise with the transmission wheel 2031, the inner wall of the slot 2013 generates resistance against the deflector rod 2032. This resistance compresses the reset elastic member 2015 and pushes the deflector rod 2032 out of the slot 2013. When the transmission wheel 2031 rotates a certain angle, the deflector rod 2032 disengages the slot 2013, the reset elastic member 2015 releases its elastic force, and the deflector rod 2032 rotates to reset, and then abuts against the adjacent slot 2013.

[0134] The arrangement of the locking groove 2013 and the actuating protrusion 2012 corresponds to the steps of the implantation operation, that is, each time the driving loader 2020 is pressed, one step is completed and the shifting rod 2032 passes one locking groove 2013. When the step of releasing the proximal anchor 1050 is required, the actuating protrusion 2012 is rotated to the vicinity of the actuating shifting rod 2050.

[0135] Taking the accompanying drawings as an example, 13 slots 2013 are evenly distributed around the periphery of the proximal anchoring actuator wheel 2040, and four actuating bumps 2012 are provided on one side of the surface, allowing for four implantations. Each implantation actually requires three steps. Considering that the device is shipped unloaded, the first implantation requires charging the drive elastic member 2030, thus adding an additional step. This step is unnecessary if the device is shipped loaded. It is understood that other numbers of slots 2013 and actuating bumps 2012 can be used as needed.

[0136] The last step of the implantation operation is to cut off the connector 1040, which is achieved by using the second opening of the proximal loading tube 1006 as a blade to cut off the connector 1040. The proximal loading tube 1006 is retracted toward the proximal end, and the second opening drives the connector 1040 passing through it to be stuck on the edge of the first opening of the delivery pipe 1003, and then the edge of the second opening cuts off the connector 1040.

[0137] To achieve severing of connector 1040, referring to FIG20 , implant delivery mechanism 1000 further includes a loading tube connector 1011, a tension spring 1012, and a shear limiter 1013. The distal end of loading tube connector 1011 connects to proximal loading tube 1006, and the two move synchronously. The proximal end of loading tube connector 1011 is connected to push rod push block 1008 via tension spring 1012. Shear limiter 1013 is disposed between loading tube connector 1011 and push rod push block 1008. In an initial state where proximal anchor 1060 has not yet been released, tension spring 1012 is in a stretched state, and the distal end of shear limiter 1013 abuts loading tube connector 1011 to limit its displacement. The proximal end of shear limiter 1013 is spaced apart from push rod push block 1008, limiting its position. When the push rod push block 1008 is released from its restraint, it is acted upon by the tension spring 1012 to move distally and strike the proximal end of the shearing stopper 1013, causing the shearing stopper 1013 to rotate about the stopper shaft 10131, thereby releasing its restraint on the loading tube connector 1011. Driven by the tension spring 1012, the loading tube connector 1011 moves proximally, driving the proximal loading tube 1006 to move proximally and cut the connector 1040. As can be seen from the foregoing, although the release of the proximal anchor 1060 and the shearing of the connector 1040 are implantation steps that occur one after the other, they can be accomplished by a single press of the driver 220, i.e., the two implantation steps are completed in tandem, simplifying the operator's operation and making the device's structural design more concise and compact.

[0138] The above describes the process of releasing the puncture needle 1010, retracting the puncture needle 1010 to release the distal anchor 1050, releasing the proximal anchor 1060, and shearing the connector 1040. This process completes the implantation of a set of implants. Subsequently, the knob 3001 is rotated counterclockwise, and the locking tongue 3002 is pulled out of the second slot 3004, unlocking the installation locking mechanism and releasing the restraint on the first housing 1001. The first housing 1001 is then removed from the mounting slot 2003 of the second housing 2001, completing the disassembly of the implant delivery mechanism 1000. A new implant delivery mechanism 1000 is then placed in the mounting slot 2003 of the second housing 2001. The knob 3001 is then rotated clockwise, and the locking tongue 3002 is extended and inserted into the first slot 3003 and second slot 3004, restricting the movement of the first housing 1001 relative to the second housing 2001. This completes the assembly of the implant delivery mechanism 1000, and the implantation steps can be repeated to proceed with the implantation of the next set of implants.

[0139] As can be seen above, benign prostatic hyperplasia (BPH) can be treated by inserting an implant into the body, leveraging the implant's supporting properties to separate the two lobes of the prostate, preventing them from obstructing the urethra. Specifically, the delivery system first inserts the implant into the body using a puncture needle, then withdraws the needle, and finally uses the delivery system's shearing and pushing mechanism to shear off any excess connectors on the implant.

[0140] However, existing delivery systems use a disc-shaped spiral structure to provide puncture and retraction drive, which consumes a large portion of kinetic energy and increases friction, resulting in a low energy conversion ratio. The same output force requires a larger input force to achieve, so a drive spring with a larger output force is required to drive it. This places a higher test on the internal structural strength, fatigue resistance, and life of the device. When in use, the existing delivery system is prone to jamming during puncture and retraction due to device failure, resulting in implant release failure. These problems affect the reliability of the delivery system. On the other hand, traditional delivery systems provide a protective channel for the connector through the gap between the actuators, and the requirements for this gap are very high. If the fit between the actuators is too loose, the connector can easily fall out of the gap, resulting in the distal implant being unable to be released smoothly; if the fit between the actuators is too tight, when the connector is moved proximally by the movement of one of the actuators to tighten it, the overly tight fit between the actuators will cause the actuator that tightens the connector to be unable to move proximally, and the connector cannot be tightened, resulting in poor implantation effect.

[0141] Therefore, in order to solve the technical problems mentioned above, the present application further improves the structure involved in the conveying process. Referring to Figures 20 to 32, an embodiment of the present application provides a conveying system.

[0142] Specifically, the delivery system includes the aforementioned puncture needle 1010 and needle actuator 1020. The puncture needle 1010 is suitable for puncturing human tissue, such as the prostate, and is used to carry an interconnected implant and connector 1040 for implantation into the human tissue. The needle actuator 1020 is connected to the puncture needle 1010. The distal release or proximal retraction of the needle actuator 1020 can drive the puncture needle 1010 to be synchronously released distally or retracted proximally. Specifically, when the puncture needle 1010 is released distally, i.e., the puncture needle 1010 punctures the human tissue, and the interconnected implant and connector 1040 pass through the human tissue along with the puncture needle 1010. When the puncture needle 1010 is retracted proximally, i.e., the puncture needle 1010 is withdrawn from the human tissue, the interconnected implant and connector 1040 remain within the body. Preferably, the puncture needle 1010 is fixedly connected to the needle actuator 1020. For example, the puncture needle 1010 can be integrally injection-molded with the needle actuator 1020 to achieve synchronous movement of the two.

[0143] The wire actuator 1030 is connected to the needle actuator 1020 and is suitable for synchronous movement or relative movement with the needle actuator 1020; specifically, as the needle actuator 1020 drives the puncture needle 1010 to release in the distal direction, the wire actuator 1030 moves synchronously with the needle actuator 1020 in the distal direction under the drive of the needle actuator 1020, and when the needle actuator 1020 drives the puncture needle 1010 to retract in the proximal direction, the wire actuator 1030 lags behind the needle actuator 1020 in movement, and the movement is synchronous movement or relative movement with the needle actuator 1020 in the proximal direction generated under the drive of the needle actuator 1020; wherein, the drive of the wire actuator 1030 by the needle actuator 1020 can be direct drive or indirect drive, which is described in detail later.

[0144] The connecting member 1040 is connected to the wire actuator 1030 and is inserted into the puncture needle 1010. When the puncture needle 1010 is released in the distal direction, the driving connecting member 1040 moves in the distal direction, and when the wire actuator 1030 is withdrawn in the proximal direction, the driving connecting member 1040 moves in the proximal direction; preferably, the connecting member 1040 is fixedly connected to the wire actuator 1030.

[0145] In the embodiment of the present application, the delivery system is used to deliver an implant to a designated location within a patient's body. The coordinated operation of the needle actuator 1020 and the wire actuator 1030 simplifies the driving method for puncturing and withdrawing the puncture needle 1010 and tightening the connector 1040, reducing the force required for delivery. This allows for more consistent operation of the puncture needle 1010, withdrawing the puncture needle 1010, and tightening the connector 1040, thereby avoiding jamming during delivery and effectively improving delivery efficiency and accuracy.

[0146] The delivery system also includes a linkage mechanism, which is suitable for connecting the needle actuator 1020 and the wire actuator 1030, so that when the needle actuator 1020 drives the puncture needle 1010 to move in the distal direction, the wire actuator 1030 is driven to move in the distal direction, and when the needle actuator 1020 drives the puncture needle 1010 to move in the proximal direction, the wire actuator 1030 is driven to move in the proximal direction.

[0147] 20 to 23 , in some embodiments, the linkage mechanism includes a slide groove 511a and a protrusion 512a, one of the slide groove 511a and the protrusion 512a is arranged on the needle actuator 1020, and the other is arranged on the wire actuator 1030, and the protrusion 512a is suitable for being inserted into the slide groove 511a and can slide along the length direction of the slide groove 511a.

[0148] In one embodiment of the present application, a slide groove 511a is provided on the needle actuator 1020, and a protrusion 512a is provided on the wire actuator 1030. The protrusion 512a on the wire actuator 1030 is inserted into the slide groove 511a of the needle actuator 1020 for slidable assembly. When the needle actuator 1020 drives the puncture needle 1010 toward the distal end, the protrusion 512a abuts against the end 5111a of the slide groove, causing the needle actuator 1020 to drive the wire actuator 1030 toward the distal end.

[0149] In some embodiments, the delivery system further includes a limiting mechanism, which is suitable for limiting the movement of the wire actuator 1030 when the needle actuator 1020 moves in the distal direction or the proximal direction, and releasing the restriction on the wire actuator 1030 after the needle actuator 1020 moves a certain distance, so that the wire actuator 1030 moves in the distal direction or the proximal direction under the drive of the needle actuator 1020.

[0150] In some embodiments, the delivery system also includes a first reset elastic member 52a, which is located between the needle actuator 1020 and the wire actuator 1030, with both ends respectively connected to the needle actuator 1020 and the wire actuator 1030, and is suitable for being compressed or stretched when the wire actuator 1030 is restricted from moving, and driving the wire actuator 1030 to move after the restriction on the wire actuator 1030 is released.

[0151] In some embodiments, the delivery system further includes a guide rod 53a, one end 531 of which is connected to the needle actuator 1020 and the other end 532 of which is connected to the wire actuator 1030. This allows one of the needle actuator 1020 and the wire actuator 1030 to move synchronously with the guide rod 53a, while the other slides axially along the guide rod 53a. Specifically, one end 531 of the guide rod 53a is interference-fitted with the first mounting hole 21a of the needle actuator 1020, or the needle actuator 1020 and the guide rod 53a are injection-molded together, allowing the needle actuator 1020 and the guide rod 53a to move synchronously. The other end 532 of the guide rod 53a is connected to the wire actuator 1030, allowing the wire actuator 1030 to slide axially along the guide rod 53a. Preferably, the wire actuator 1030 is sleeved onto the guide rod 53a through the second mounting hole 31a, allowing it to slide along the guide rod 53a.

[0152] In some embodiments, the first resetting elastic member 52a is sleeved on the guide rod 53a, and its two ends are respectively connected to the needle actuator 1020 and the wire actuator 1030. When the needle actuator 1020 drives the puncture needle 1010 to move in the proximal direction or the distal direction, the needle actuator 1020 and the wire actuator 1030 move relative to each other along the axial direction of the guide rod 53a to compress or stretch the first resetting elastic member 52a.

[0153] In some embodiments, the delivery system further includes a connector guide tube 41a, which is sleeved over the connector 1040, with one end connected to the wire actuator 1030 and the other end inserted into the puncture needle 1010. The connector guide tube 41a provides support and protection for the proximal portion of the connector 1040, preventing this portion of the connector 1040 from bending during movement. Preferably, the connector guide tube 41a is fixedly connected to the wire actuator 1030, for example, by integral injection molding with the wire actuator 1030, so as to be adapted to move synchronously with the wire actuator 1030 under the drive of the wire actuator 1030.

[0154] 24 to 28 , in some specific embodiments, the limiting mechanism includes a first limiting claw 611a, which is disposed on one side of the wire actuator 1030. The wire actuator 1030 is provided with a limiting slot 612a that cooperates with the first limiting claw 611a. The first limiting claw 611a is adapted to be clamped in the limiting slot 612a when the needle actuator 1020 drives the puncture needle 1010 to start moving in the proximal direction, that is, as shown in FIG. 25 , to restrict the movement of the wire actuator 1030. After the needle actuator 1020 moves a certain distance in the proximal direction, the wire actuator 1030 is driven by the needle actuator 1020 to disengage from the limiting slot 612a, thereby releasing the limit on the wire actuator 1030. When the first limiting claw 611a is engaged in the limiting slot 612a, the linear actuator 1030 remains stationary, and the needle actuator 1020 retracts proximally along the axial direction of the guide rod 53a. The needle actuator 1020 and the linear actuator 1030 approach each other, compressing and accumulating energy in the first return elastic member 52a mounted on the guide rod 53a. After the needle actuator 1020 moves proximally a certain distance, the linear actuator 1030, driven by the needle actuator 1020, disengages the limiting slot 612a. The released linear actuator 1030, driven by the compressed first return elastic member 52a, moves proximally.

[0155] In some specific embodiments, the needle actuator 1020 is provided with a boss 622a, and the first limiting claw 611a elastically abuts against the outer surface 22a of the needle actuator and is adapted to rotate along the axis A. The boss 622a is provided on the outer surface 22. When the needle actuator 1020 is retracted a certain distance proximally along the axial direction of the guide rod 53a, as shown in FIG. 26 , the boss 622a on the outer surface 22 of the needle actuator 1020 moves to the first limiting claw 611a, lifting the first limiting claw 611a and pushing it to rotate in a direction D1 away from the outer surface 22, thereby disengaging from the limiting groove 612a, thereby releasing the limit of the linear actuator 1030. The compressed elastic force of the first return elastic member 52a is released, driving the linear actuator 1030 to move proximally, thereby tightening the connecting member 1040.

[0156] 26 and 27 , in some specific embodiments, the first limiting claw 611a is provided with a step 6111, so that the first portion 6111a of the step 6111 is adapted to be clamped in the limiting slot 612a to limit the movement of the linear actuator 1030, and the second portion 6111b of the step 6111 is adapted to abut against the outer surface 22a of the needle actuator and, when contacting the boss 622a, lift the first limiting claw 611a, thereby disengaging the first portion 6111a of the step 6111 from the limiting slot 612a. The design of the step 6111 allows the first limiting claw 611a and the needle actuator 1020 to be more compact and to fit more tightly together.

[0157] As shown in Figure 28, in some specific embodiments, the limiting mechanism also includes a second reset elastic member 631a, which is connected to the first limiting claw 611a and is suitable for applying pressure F1 to the first limiting claw 611a so that the first limiting claw 611a always maintains a tendency to rotate along the axis A in the direction D2 close to the outer surface 22, that is, to ensure that the first limiting claw 611a remains in contact with the outer surface 22.

[0158] As shown in Figures 29 to 32, in some other specific embodiments, the limiting mechanism includes a second limiting claw 641a disposed in the movement path of the wire actuator 1030. The wire actuator 1030 is provided with a limiting tooth 642a that cooperates with the second limiting claw 641a. When the second limiting claw 641a abuts the limiting tooth 642a of the wire actuator 1030, the movement of the wire actuator 1030 is restricted. When the wire actuator 1030 is restricted, it remains stationary. At this time, the movement of the needle actuator 1020 compresses or stretches the first return spring 52a. When the first return spring 52a is compressed or stretched to a predetermined pressure, the first return spring 52a drives the wire actuator 1030 out of the restraint of the second limiting claw 641a.

[0159] In some other specific embodiments, the second limiting claw 641a is adapted to engage the limiting tooth 642a when the needle actuator 1020 begins to move in the proximal direction, i.e., as shown in FIG30 , thereby limiting the movement of the wire actuator 1030. When the second limiting claw 641a is engaged with the limiting tooth 642a, the wire actuator 1030 remains stationary, and the needle actuator 1020 withdraws in the proximal direction along the axial direction of the guide rod 53a, i.e., moves toward the wire actuator 1030, compressing and storing energy in the first return elastic member 52a mounted on the guide rod 53a. When the first return spring 52a is compressed to a preset pressure, this pressure drives the limiting tooth 642a of the wire actuator 1030 to push the second limiting claw 641a, ultimately disengaging the second limiting claw 641a, as shown in FIG31 , thereby freeing the wire actuator 1030 from the restraint of the second limiting claw 641a and moving proximally. Similarly, the second limiting claw 641a is also adapted to engage the limiting tooth 642a when the needle actuator 1020 begins to move distally, thereby restricting the movement of the wire actuator 1030. When the second limiting claw 641a engages the limiting tooth 642a, the wire actuator 1030 remains stationary, and the needle actuator 1020 is released distally along the axial direction of the guide rod 53a, i.e., away from the wire actuator 1030, stretching and storing energy in the first return spring 52a mounted on the guide rod 53a. When the first return elastic member 52a is stretched to a preset pressure, the pressure can drive the limiting tooth 642a of the linear actuator 1030 to push the second limiting claw 641a, and finally disengage from the abutment of the second limiting claw 641a, as shown in FIG32 , thereby allowing the linear actuator 1030 to break free from the restriction of the second limiting claw 641a and move toward the distal direction. Preferably, regardless of whether the linear actuator 1030 moves toward the proximal direction or toward the distal direction, the outer surface of the second limiting claw 641a can be provided with a corresponding guide surface to allow the limiting tooth 642a to smoothly disengage from the abutment of the second limiting claw 641a.

[0160] In these other embodiments, the limiting mechanism includes a pinch plate 651a, which is provided with a slideway 6511a. The linear actuator 1030 is disposed within the pinch plate 651a and is adapted to slide along the slideway 6511a in a distal or proximal direction. A second limiting claw 641a is disposed within the slideway 6511a. As shown in FIG30 , as the needle actuator 1020 is withdrawn or released axially along the guide rod 53a, the closer the needle actuator 1020 is to or away from the linear actuator 1030, and the greater the compression or tension stored in the first return elastic member 52a between the two. As the compressive or tensile force of the first return elastic member 52a increases, the force F2 exerted by the limiting tooth 642a on the linear actuator 1030 on the second limiting claw 641a also increases continuously. When this force reaches a certain threshold, the limiting tooth 642a pushes the second limiting claw 641a away, breaking out of the second limiting claw 641a, and releasing the limit on the linear actuator 1030. Referring to Figure 31, the compressive force of the first return elastic member 52a is released, driving the linear actuator 1030 in the proximal direction, thereby tightening the connecting member 1040. Referring to Figure 32, the tensile force of the first return elastic member 52a is released, driving the linear actuator 1030 in the distal direction. When the second limiting claw 641a and the limiting tooth 642a cooperate to limit, the force acting on the linear actuator 1030 is more uniform, avoiding position deviation caused by unilateral force on the linear actuator 1030, and further improving the stability of the conveying system.

[0161] Based on the same inventive concept, an embodiment of the present application further provides a medical device, which includes the delivery system and a handle as described above, and the handle drives the needle actuator 1020 and / or the wire actuator 1030 to move.

[0162] The medical device of the above embodiment relies on the corresponding delivery system in any of the above embodiments to simplify the driving mode of releasing, retracting the puncture needle 1010 and tightening the connecting member 1040, and has the beneficial effects of the corresponding delivery system embodiment, which will not be repeated here.

[0163] Compared with the related art, the technical solution of the present application has beneficial effects.

[0164] For example, through the coordinated linkage of the needle actuator and the wire actuator, the driving method of releasing, retracting and tightening the puncture needle and the connector is simplified, the energy loss in each step is reduced, and the force required for delivery is reduced, so that each operation step is smoother and more coherent, avoiding jamming during delivery, and effectively improving the delivery efficiency and accuracy.

[0165] For another example, when the needle actuator moves toward the proximal end, the wire actuator lags behind the needle actuator in movement, thereby ensuring normal tightening of the connector and effectively improving the implantation effect of the implant.

[0166] For another example, since the connector has a certain degree of flexibility, the connector can be protected by a connector guide tube to prevent the connector from bending or breaking, further improving the tightening effect and increasing the success rate of the operation.

[0167] For example, the traditional power-assisting technology that fundamentally changes the delivery system not only reduces the surgical risks of BPH patients, but also saves medical expenses.

[0168] As can be seen above, treatment for benign prostatic hyperplasia (BPH) involves inserting an implant into the human body via a delivery system. The implant's support properties separate the two lobes of the prostate, preventing them from obstructing the urethra. Specifically, the delivery system first inserts the implant into the body using a puncture needle. The needle is then withdrawn, leaving the distal anchor and connector loaded within the needle in place on the prostate tissue. The proximal anchor is then released onto the connector, suspending the prostate tissue between the distal and proximal anchors. Finally, the excess connector is sheared off to complete the implant.

[0169] However, the current delivery system has poor reliability in the two-step operation of releasing and retracting the puncture needle. The reason is that the force transmission process is completed by multiple parts. If any part is damaged or the contact between adjacent parts is unstable, the puncture needle may fail to release or be unable to be retracted. In addition, the delivery system that provides the puncture needle release drive still uses a one-time delivery method, that is, each delivery system can only implant an implant into a patient once at a time. If re-implantation is required during the operation, a new delivery system needs to be replaced, and it is impossible to use a single instrument to perform multiple consecutive implants. The above situations all lead to problems such as poor surgical stability, high cost, high difficulty, and long time.

[0170] Therefore, in order to solve the technical problems mentioned above, the present application further improves the structure involved in the conveying process. Referring to Figures 33 to 37, an embodiment of the present application provides a conveying system.

[0171] Specifically, in one embodiment, the delivery system includes:

[0172] The force release member 2010 is provided with a notch 101b. The force release member 2010 is connected to a puncture needle (not shown) via the notch 101b. The puncture needle is suitable for puncturing human tissue, such as the prostate, and is used to carry interconnected implants (specifically distal anchors) and connectors to be implanted into human tissue. The force release member 2010 is suitable for reciprocating between the distal end and the proximal end. The release of the force release member 2010 in the distal direction or the withdrawal in the proximal direction can drive the puncture needle to be synchronously released in the distal direction or withdrawn in the proximal direction. The release of the puncture needle in the distal direction means that the puncture needle punctures human tissue, and the interconnected implants and connectors pass through the human tissue along with the puncture needle. The withdrawal of the puncture needle in the proximal direction means that the puncture needle withdraws outward from the human tissue, and the interconnected implants and connectors are left in the body.

[0173] The driving loader 2020 is connected to the force releasing member 2010 and is rotatably mounted on the rotating shaft 21b. The driving loader 2020 can be rotated in a first direction to press and in a second direction to reset. The first direction and the second direction are opposite.

[0174] Rotating and pressing the drive loader 2020 in a first direction can cause the force release member 2010 to move distally or proximally. When the drive loader 2010 moves from distal to proximal, the puncture needle is retracted; when the drive loader 2010 moves from proximal to distal, the puncture needle is released. Specifically, taking Figure 33 as an example, the counterclockwise direction is the first direction, and the clockwise direction is the second direction. The "proximal end" representing the end closer to the operator is set to the right, and the "distal end" representing the end farther from the operator is set to the left. To facilitate operation by the operator, the delivery system can be a handle, and the drive loader 2020 is a pressing rod on the handle to facilitate the operator's holding. During the operation, the operator holds the drive loader 2020 and applies a proximal force F to the drive loader 2020, thereby causing the drive loader 2020 to rotate counterclockwise about the rotation axis 21b. It should be noted that releasing the puncture needle and retracting the puncture needle are two sequential steps that are performed in a cycle. The operator must press twice to perform these two steps respectively. To achieve multiple presses of the drive loader 220, the drive loader 220 needs to have a reset function. The implementation method is not limited here and can be any structure that can achieve reset in the relevant art. A common method is a structure designed to utilize the rebound force of an elastic member, such as a torsion spring installed on the rotating shaft 21b. The drive of the force-accumulating release member 210 by the drive loader 220 can be an indirect transmission, which is described in detail below.

[0175] The driving elastic member 2030 is connected to the force release member 2010 and is adapted to stretch or compress when the force release member 2010 moves from the distal end to the proximal end, thereby completing the energy storage of the force release member 2010 to accumulate kinetic energy for the release of the puncture needle. Preferably, the handle includes a handle housing, the force release member 2010 is slidably disposed within the handle housing, and the force release member 2010 has an inner cavity; at least a portion of the driving elastic member 2030 is accommodated in the inner cavity of the force release member 2010, one end 31b of the driving elastic member 2030 is fixedly mounted on the handle housing, and the other end 32b is connected to the force release member 2010. By arranging the driving elastic member 2030 in the inner cavity, on the one hand, the overall volume of the delivery system is saved, achieving miniaturization, and on the other hand, the shape change of the driving elastic member 2030 will not interfere with other structures within the handle housing, thereby improving the reliability of the device. Depending on actual needs, if the driving elastic member 2030 is configured to store energy by tension, one end 31b of the driving elastic member is positioned closer to the distal end relative to the force release member 2010. If the driving elastic member 2030 is configured to store energy by compression, one end 31b of the driving elastic member is positioned closer to the proximal end relative to the force release member 2010. As the force release member 2010 moves from the distal end to the proximal end, the driving elastic member 2030 stretches or compresses, generating elastic potential energy. When the driving loader 2020 is pressed to release the puncture needle, the elastic potential energy of the driving elastic member 2030 is released, driving the force release member 2010 to move from the proximal end to the distal end.

[0176] In this embodiment of the present application, the delivery system is used to deliver an implant to a desired location within a patient's body. The release member 2010 reciprocates between distal and proximal ends to release and retract the puncture needle. The multifunctional integration of the driver loader 2020 streamlines the implant procedure, reducing operational difficulty and improving surgical outcomes.

[0177] In some embodiments, the delivery system further comprises a first transmission mechanism, through which the drive loader 2020 is connected to the force release member 2010. During the operation of accumulating force in the drive elastic member 2030, the first transmission mechanism is adapted to, when the drive loader 2020 rotates counterclockwise and presses, drive the force release member 2010 from the distal end to the proximal end under the drive loader 2020's drive. The force release member 2010 is restrained from distal movement, thereby preventing the loss of elastic potential energy accumulated in the drive elastic member 2030. The restraint on the force release member 2010 remains until the force release member 2010 reaches a designated proximal position, ensuring that sufficient elastic potential energy is accumulated in the drive elastic member 2030. During the operation of releasing the puncture needle, the drive loader 2020 rotates counterclockwise and presses, releasing the force release member 2010. The drive elastic member 2030, with sufficient elastic potential energy, drives the force release member 2010 from the proximal end to the distal end, completing the release of the puncture needle. After the force release member 2010 completes the release from the proximal end to the distal end, it can continue to apply force F toward the proximal end to the driving loader 2020. The force release member 2010 released to the distal end is driven again and moves from the distal end to the proximal end, thereby completing the retraction of the puncture needle, and completing the two steps in this cycle.

[0178] Specifically, during the operation, it is only necessary to operate the driving loader 2020 to rotate it back and forth to repeatedly release and retract the puncture needle, thereby saving operation time and reducing operation costs.

[0179] Referring to Figures 33 to 37 , in some embodiments, the transmission from the driving loader 2020 to the force release member 2010 is a meshing transmission. Specifically, a first transmission mechanism includes a coaxially arranged driving wheel 41b and a driven wheel 42b. The driving loader 2020 is connected to the driving wheel 41b, and the rotation of the driving loader 2020 drives the driving wheel 41b to rotate. The driven wheel 42b is connected to the force release member 2010, and the rotation of the driven wheel 42b drives the force release member 2010 to move.

[0180] In a specific embodiment of the present application, the driving wheel 41b meshes with the driving loading member 2020 for transmission. The driven wheel 42b includes a toothed portion (i.e., a limiting portion) and a toothless portion (i.e., a free portion). The toothed portion is provided with gear teeth 421b, and the force release member 2010 is provided with a rack 102b. When the driven wheel 42b rotates, the gear teeth 421b of the toothed portion mesh with the rack 102b, driving the force release member 2010 from the distal end to the proximal end. Referring to Figure 37, when the force release member 2010 moves to a designated proximal position, the gear teeth 421b disengage from the rack 102b, and the force release member 2010 faces the toothless portion of the driven wheel 42b. The driven wheel 42b releases the restraint on the force release member 2010, and the driving elastic member 2030 drives the force release member 2010 from the proximal end to the distal end.

[0181] In a specific embodiment of the present application, when the elastic member 2030 is driven to store force, the loading member 2020 rotates counterclockwise under the action of a force F applied by the operator, thereby driving the driving wheel 41b to rotate clockwise. When the driving wheel 41b rotates clockwise, the driven wheel 42b rotates synchronously clockwise. The clockwise rotation of the driven wheel 42b drives the force release member 2010 to move from the distal end to the proximal end, and the elastic member 2030 stretches to generate potential energy to store energy in the force release member 2010. When the operator releases the pressure on the loading member 2020, the loading member 2020 rotates clockwise to reset under the action of an external force f opposite to the force F (e.g., the external force f provided by the reset elastic member 50b), driving the driving wheel 41b to rotate synchronously counterclockwise. Specifically, the external force f is provided by a reset mechanism. The reset mechanism stretches or compresses when the driving loader 2020 rotates counterclockwise about the rotation axis 21b under the action of force F. After the force F is removed, the driving loader 2020 rotates clockwise about the rotation axis 21b and resets. When the driving wheel 41b rotates counterclockwise, the limiting pawl 60b of the first transmission mechanism engages the gear teeth 421b of the driven wheel 42b, restricting the counterclockwise rotation of the driven wheel 42b and ensuring that the driven wheel 42b remains stationary. This, in turn, ensures that the force release member 2010 remains stationary, thereby limiting distal movement of the force release member 2010.

[0182] In a specific embodiment of the present application, the first transmission mechanism further includes a lever 43b and a protrusion 44b. One end of the lever 43b is rotatably connected to the driving wheel 41b, while the other end is allowed to deflect only toward one side and is prohibited from deflecting toward the other side. The protrusion 44b is disposed on the driven wheel 42b. There is a force interaction between the lever 43b and the protrusion 44b during the transmission process. Referring to Figures 33-36, the protrusions 44b are symmetrically arranged. When the driving wheel 41b rotates clockwise, one side of the lever 43b abuts against the inner wall 412b of the driving wheel cover 411b, which restricts the lever 43b from deflecting counterclockwise. The other side of the lever 43b maintains contact with a protrusion 44b, pushing the protrusion 44b to cause the driven wheel 42b to rotate synchronously with the driving wheel 41b. The loader 2020 is driven to reset clockwise, causing the driving wheel 41b to rotate counterclockwise. The lever 43b moves with the driving wheel 41b and disengages from one protrusion 44b, then contacts the other protrusion 44b. The driven wheel 42b remains stationary under the restraint of the limit pawl 60b. As the driving wheel 41b continues to rotate counterclockwise, the other protrusion 44b contacts and presses the lever 43b downward, causing the lever 43b to move relative to the driving wheel 41b, thereby preventing the protrusion 44b from restricting the driving wheel 41b from resetting counterclockwise. The driving wheel 41b continues to rotate counterclockwise, and the depressed lever 43b passes over the other protrusion 44b and is then lifted again, as described below.

[0183] In some embodiments, the conveying system further includes a resilient member 50b, the ends of which are connected to the lever 43b and the driving wheel 41b, respectively. The resilient member 50b is adapted to be compressed when the lever 43b rotates clockwise relative to the driving wheel 41b, and to drive the lever 43b to return and rise after the lever 43b passes over the protrusion 44b from one side 441b of the protrusion. Preferably, the resilient member 50b may be a torsion spring.

[0184] In summary, for the embodiments shown in Figures 33 to 37, when the driving loader 2020 is pressed to store force for the driving elastic member 2030, the driving loader 2020 rotates counterclockwise, driving the active wheel 41b to rotate clockwise, and the lever 43b on the active wheel 41b abuts and pushes a protrusion 44b on the driven wheel 42b, thereby causing the driven wheel 42b to rotate clockwise. At this time, the gear teeth 421b of the driven wheel 42b are engaged with the rack 102b of the force release member 2010. Driven by the driven wheel 42b, the force release member 2010 moves toward the proximal end, and the driving elastic member 2030 is stretched to store force. If the force release member 2010 is connected to the puncture needle at this time, the force storage process is also the process of retracting the puncture needle. Preferably, the conveying system also includes a limit rod 70b, which is arranged on the path of the force release member 2010 moving toward the proximal end to limit the maximum position of the force release member 2010 moving toward the proximal end, thereby avoiding the force release member 2010 being disengaged from the gear teeth 421b of the driven wheel 42b due to excessive movement distance, thereby preventing the puncture needle from being released prematurely. When the operator releases the pressure on the driving loader 2020, the driving loader 2020 rotates clockwise and resets under the action of the reset mechanism, driving the active wheel 41b to rotate counterclockwise, and the lever 43b on the active wheel 41b disengages from the abutment with one protrusion 44b and moves to abut against the other protrusion 44b. Since the deflection of the lever 43b in the clockwise direction is not restricted, and the driven wheel 42b cannot rotate counterclockwise under the restriction of the limit claw 60b, the other protrusion 44b can press the lever 43b down, and the lever 43b continues to move with the active wheel 41b and crosses the other protrusion 44b. Under the action of the reset elastic member 50b, the lever 43b is lifted again. When the operator presses the driving loader 2020 again, the lever 43b can continue to push the other protrusion 44b to realize transmission.

[0185] After completing the force storage step of the driving elastic member 2030, the operator can release the puncture needle by pressing it again. Specifically, the driving loader 2020 rotates counterclockwise, driving the active wheel 41b to rotate clockwise, and the lever 43b on the active wheel 41b abuts and pushes another protrusion 44b on the driven wheel 42b, thereby causing the driven wheel 42b to rotate clockwise. At this time, the gear teeth 421b of the driven wheel 42b are disengaged from the rack 102b of the force release member 2010, and the force release member 2010 is opposite to the toothless part. The driven wheel 42b can no longer limit the force release member 2010. Under the contraction force of the driving elastic member 2030, the force release member 2010 moves toward the distal end and drives the puncture needle to be released. It should be noted that if the delivery system is designed with a limit rod 70b, the operator must manually remove the limit rod 70b from the force release member 2010 before pressing the drive loader 2020. This will allow the force release member 2010 to move further proximally and disengage from the gear teeth 421b. When the operator releases the pressure on the drive loader 2020, the drive loader 220 and the driving wheel 41b return to their original position, while the driven wheel 42b remains stationary. Continuing to press the drive loader 2020 will allow the operator to repeat the above two steps in sequence.

[0186] Referring to FIG38 , in other specific embodiments, the driving loader 2020 engages with the driving wheel 41b for transmission. The driving wheel 41b and the driven wheel 42b are driven by a ratchet mechanism, and the driven wheel 42b rotates unidirectionally under the restriction of the limiting pawl 60b. That is, when the driving wheel 41b rotates clockwise, the driven wheel 42b rotates synchronously clockwise, and when the driving wheel 41b rotates counterclockwise, the driven wheel 42b remains stationary. The limiting pawl 60b can be connected to the handle housing via a pin 61b. The advantage of a ratchet mechanism transmission is that the device contains fewer parts, making it easier to assemble. However, during the ratchet transmission process, the teeth always remain in contact, causing wear during relative motion, resulting in a certain failure rate. In comparison, the transmission reliability of the embodiments shown in FIG33-35 using the shifting rod 43b and the protrusion 44b is higher.

[0187] In some other embodiments, the driven wheel 42b is provided with two guide bars 422b (i.e., limiting portions), with a breakpoint (i.e., free portion) between the two guide bars 422b. The force release member 2010 is provided with a chute 103b. During the process of accumulating force in the driving elastic member 2030, the driven wheel 42b rotates, and the guide bars 422b are inserted into and move along the chute 103b, thereby driving the force release member 2010 from the distal end to the proximal end. When releasing the puncture needle, the force release member 2010 moves to the proximal end, the guide bars 422b disengage from the chute 103b, and the force release member 2010 faces the breakpoint of the guide bars 422b. The driven wheel 42b releases the force release member 2010, and the driving elastic member 2030 drives the force release member 2010 from the proximal end to the distal end.

[0188] 39 , in some other specific embodiments, the driving loader 2020 and the driving wheel 41 b are driven by a connecting rod 45 to drive the driving wheel 41 b. The remaining structure is the same as the previous embodiment.

[0189] Referring to Figure 40 , in some other embodiments, the driven wheel 42b is a disk wheel comprising a protrusion 421ab portion and a gap portion. The protrusion 421ab portion is provided with a plurality of protrusions 421ab spaced circumferentially, and the force release member 2010 is provided with a plurality of ridges 102ab. During the process of charging the driving elastic member 2030, the driven wheel 42b rotates, and the protrusions 421ab of the protrusion 421ab portion cooperate with the ridges 102ab to drive the force release member 2010 from the distal end to the proximal end. To release the puncture needle, the force release member 2010 moves to the proximal end, the protrusions 421ab disengage from the ridges 102ab, and the force release member 2010 faces the gap portion of the disk wheel. The disk wheel releases the force release member 2010, and the driving elastic member 2030 drives the force release member 2010 from the proximal end to the distal end. In some other specific embodiments, the transmission structure from the driving loader 2020 to the driven wheel 42b is the same as that of the embodiment shown in Figure 33.

[0190] Based on the same inventive concept, an embodiment of the present application further provides a medical device, which includes the delivery system, puncture needle and implant as described above, and the driving loader 2020 drives the puncture needle to continuously release and retract to implant the implant into the human body.

[0191] The medical device of the above embodiment relies on the corresponding delivery system in any of the above embodiments to integrate the puncture needle release and puncture needle retraction to achieve continuous implantation function, reduce the operation difficulty and improve the surgical effect, which will not be repeated here.

[0192] Compared with the related art, the technical solution of the present application has beneficial effects.

[0193] For example, the release and retraction of the puncture needle are achieved by reciprocating the force-storing release part between the distal end and the proximal end. The implementation of the two steps is integrated into the drive loader, and the limiting part and the free part are set at intervals, so that the two steps can be performed in a cycle. During the process, multiple groups of implants can be continuously implanted without replacing new instruments, making the various operation steps of the implantation surgery smoother and more coherent, reducing the difficulty of operation, improving the surgical effect, saving operation time, and reducing surgical costs.

[0194] For example, the retraction of the puncture needle also accumulates force for the release of the next puncture needle, which improves the efficiency of the operation. The force of driving the elastic part to restore the deformation is used to fire the puncture needle, making the puncture faster, more accurate and stable, and avoiding the mistakes that may be caused by manual puncture.

[0195] For another example, the transmission is performed by abutting the shifting rod and the protrusion against each other, thereby avoiding the high failure rate that may exist in the meshing transmission and enhancing the reliability of the conveying system.

[0196] As can be seen from the above, the treatment of benign prostatic hyperplasia (BPH) can be achieved by implanting an anchoring device into the human body through a delivery system, utilizing the supporting properties of the anchoring device to separate the two lobes of the prostate so that they no longer block the urethra, wherein the anchoring device includes a distal anchor, a connector, and a proximal anchor connected in sequence. Specifically, the delivery system first releases a puncture needle to puncture the human body, and the distal anchor and the connector fixedly connected to the distal anchor are set in the puncture needle. The puncture needle is then withdrawn to release the distal anchor, thereby anchoring the distal anchor to the outer wall of the prostate tissue. Again, the proximal anchor is released to fix the proximal anchor to the connector and anchor the proximal anchor to the inner wall of the urethra, thereby completing the implantation of the anchoring device and tightening the prostate tissue between the distal anchor and the proximal anchor of the implant.

[0197] Therefore, completing the implantation of a set of implants involves at least three steps. Firstly, the related art requires different buttons for each step, which increases the learning curve for the operator and makes them prone to errors. Secondly, the final step of releasing the proximal anchor requires perfect coordination with the previous steps to avoid premature release and ensure reliable release. Furthermore, current delivery systems can only implant one set of implants at a time, while multiple implants are often required during surgery. Therefore, intermittent release of the proximal anchor cannot be achieved during these multiple implantations.

[0198] In the following description, "proximal end" refers to the end closer to the operator, and "distal end" refers to the end farther from the operator. In the description of this application, "counterclockwise", "clockwise", "left" and "right" are all referenced to the directions in Figure 1.

[0199] In surgical treatment of benign prostatic hyperplasia (BPH), the anchoring device is implanted as follows: First, the puncture needle is released to puncture the prostate tissue. The distal anchor and a connector fixedly connected to the distal anchor are positioned within the puncture needle. Next, the puncture needle is withdrawn, allowing the distal anchor to anchor to the outer wall of the prostate tissue, away from the urethra. Finally, the proximal anchor is released, allowing it to securely connect to the connector and anchor to the inner wall of the urethra, completing the implantation of the anchoring device.

[0200] As can be seen above, completing the implantation of a set of implants involves at least three steps. The delivery device required to perform these operations, when performing the final step of releasing the proximal anchor, must perfectly coordinate with the previous steps to avoid premature release and ensure reliable release.

[0201] 1 to 9 , an embodiment of the present application provides a conveying system, which includes:

[0202] a housing (not shown);

[0203] The proximal anchor actuator wheel 2040 is rotatably disposed within the housing. Rotation of the proximal anchor actuator wheel 2040 drives the distal release of the proximal anchor. The distal release of the proximal anchor refers to the fixed connection of the proximal anchor to the connector to anchor it in human tissue. The proximal anchor release can be accomplished by a proximal anchor release mechanism. The proximal anchor release mechanism can be disposed within the housing or can be an external device detachably connected to the housing. The proximal anchor release mechanism typically includes a release lever 32c, which serves as a triggering mechanism for the proximal anchor release. This application does not further define the proximal anchor release mechanism; it only requires that it meet its functional requirements. For example, the release lever 32c is connected to a limiter that limits the movement of the proximal anchor. When the release lever 32c is triggered by the proximal anchor actuator wheel 2040, the limiter is unlocked, and the proximal anchor is released.

[0204] The drive loader 2020 is at least partially disposed within the housing and is capable of reciprocating rotation about a rotating shaft 21c disposed within the housing. The drive loader 2020 is in transmission connection with the proximal anchoring actuating wheel 2040. Specifically, the drive loader 2020 is sleeved on the rotating shaft 21c. When the drive loader 2020 rotates about the rotating shaft 21c in a first direction, the proximal anchoring actuating wheel 2040 and the drive loader 2020 rotate synchronously. When the drive loader 2020 rotates about the rotating shaft 21c in a second direction to reset, the proximal anchoring actuating wheel 2040 remains stationary. Taking Figure 1 as an example, the counterclockwise direction is the first direction, and the clockwise direction is the second direction. The "proximal end," representing the end closer to the operator, is positioned to the right, while the "distal end," representing the end farther from the operator, is positioned to the left. To facilitate operation, the delivery system can be a handle, with the drive loader 2020 being a push rod on the handle for easy handholding by the operator. During surgery, the operator grasps the drive loader 2020 and applies a proximal force F to the drive loader 2020, thereby causing the drive loader 2020 to rotate counterclockwise about the rotation axis 21c. The drive loader 2020 drives the proximal anchoring actuator wheel 2040 indirectly, as described in detail below.

[0205] In an embodiment of the present application, the delivery system is used to deliver the proximal anchor to a designated location in the patient's body. By operating the driving loader 2020 to rotate and reset it multiple times, the proximal anchor actuator wheel 2040 can be gradually driven to rotate until it abuts the release lever 32c, thereby completing the various steps before releasing the proximal anchor. This prevents premature release of the proximal anchor and achieves intermittent release of the proximal anchor. This makes the various steps of the implant surgery smoother and more coherent, reduces operational difficulty, and improves surgical results. In order to achieve multiple pressing of the driving loader 2020, the driving loader 2020 needs to have a reset function. The implementation method is not limited here. It can be manual reset by an operator providing external force, or it can be any structure capable of achieving reset in the relevant art. A common method is a structure designed to utilize the rebound force of an elastic member, such as installing a torsion spring on the rotating shaft 21c.

[0206] In some embodiments, the delivery system further comprises a transmission mechanism, through which the drive loader 2020 is in transmission connection with the proximal anchoring actuating wheel 2040. The transmission mechanism is adapted to synchronously rotate the proximal anchoring actuating wheel 2040 when the drive loader 2020 rotates counterclockwise, and to restrict the proximal anchoring actuating wheel 2040 from rotating when the drive loader 2020 rotates clockwise to reset.

[0207] In some embodiments, the proximal anchor actuating wheel 2040 is provided with an actuating bump 41c, which is adapted to gradually approach and abut against the release lever 32c as the proximal anchor actuating wheel 2040 rotates, so as to drive the proximal anchor to move distally.

[0208] Referring to Figures 1 to 8 , in one embodiment of the present application, the transmission mechanism includes a transmission wheel 31c and a shift lever 32c. The drive loader 2020 engages and transmits power to the transmission wheel 31c. Rotation of the drive loader 2020 drives the transmission wheel 31c to rotate synchronously. The shift lever 32c is mounted on the transmission wheel 31c, and rotation of the transmission wheel 31c drives the shift lever 32c to rotate synchronously. The proximal anchoring actuating wheel 2040 is provided with slots 42c evenly distributed along its circumference. The fixed end of the shift lever 32c is connected to the transmission wheel 31c, while the free end interacts with the slots 42c to drive the proximal anchoring actuating wheel 2040 to rotate. The transmission mechanism also includes a limiting claw 40c, which is clamped on the gear teeth 43c of the proximal anchoring actuating wheel 2040. The limiting claw 40c allows the proximal anchoring actuating wheel 2040 to rotate counterclockwise, while limiting the proximal anchoring actuating wheel 2040 from rotating clockwise. Therefore, when the driving loader 2020 rotates clockwise to reset, the position of the actuating protrusion 41c on the proximal anchoring actuating wheel 2040 remains unchanged.

[0209] In a specific embodiment of the present application, when the driving loader 2020 rotates counterclockwise under the force F applied by the operator, the transmission wheel 31c rotates clockwise, thereby driving the shift lever 32c to rotate synchronously. The free end of the shift lever 32c abuts the retaining slot 42c of the proximal anchoring actuating wheel 2040, and the transmission wheel 31c continues to rotate clockwise, pushing the retaining slot 42c counterclockwise via the shift lever 32c, thereby driving the proximal anchoring actuating wheel 2040 to rotate. When the driving loader 2020 drives the transmission wheel 31c to rotate counterclockwise to reset, the proximal anchoring actuating wheel 2040 cannot rotate clockwise due to the restriction of the limit pawl 40c. Therefore, the retaining slot 42c creates resistance to the rotation of the shift lever 32c with the transmission wheel 31c. The lever 32c is rotatably mounted relative to the transmission wheel 31c. One side of the lever 32c abuts the inner wall 311c of the transmission wheel cover, while the other side is unobstructed. Therefore, when the locking slot 42c exerts a force on the lever 32c, the lever 32c is prohibited from deflecting toward one side, while being permitted to deflect toward the other side. As the transmission wheel 31c returns to its original position, the resistance exerted by the locking slot 42c on the lever 32c pushes the lever 32c to rotate clockwise relative to the transmission wheel 31c, disengaging the lever 32c from the locking slot 42c.

[0210] In a specific embodiment of the present application, the delivery system further includes a resilient member 50c. The resilient member 50c is connected at both ends to the lever 32c and the transmission wheel 31c, respectively. The resilient member 50c is adapted to be compressed when the lever 32c rotates clockwise relative to the transmission wheel 31c. After the lever 32c disengages from the slot 42c of the proximal anchoring actuator wheel 2040, the lever 32c is driven to rotate counterclockwise relative to the transmission wheel 31c to reset, and the free end of the lever 32c then enters the adjacent slot 42c. Preferably, the resilient member 50c can be a torsion spring.

[0211] In the present application, the slot 42c can be a semi-enclosed structure as shown in Figure 1, or it can be a gap between two protrusions as shown in Figure 9. Multiple protrusions are evenly arranged on the circumference of the proximal anchoring actuator wheel 2040. The free end of the lever 32c extends into the gap between two adjacent protrusions and is transmitted through the abutment protrusions. When the driving loader 2020 is reset, the lever 32c passes over the protrusion and enters the adjacent gap.

[0212] In a specific embodiment of the present application, the operator presses the corresponding lever 32c on the drive loader 2020 once to drive the proximal anchoring actuator wheel 2040 to rotate the central angle angle α corresponding to a slot 42c, so the central angle angle α is determined by the number of slots 42c.

[0213] To ensure accurate implantation, the number of slots 42c is closely related to the number of steps in the implantation operation. The number of steps affects the number of presses of the driver loader 2020. With k being the number of presses of the driver loader 2020 required to complete the implantation of one set of implants, one rotation of the proximal anchoring actuator wheel 2040 can complete the implantation of n sets of implants. Therefore, the number m of slots 42c is:

[0214] According to the aforementioned embodiment, to complete the implantation of a group of implants, it is necessary to press the driving loader 2020 three times, that is, k=3, but it is not ruled out that different instruments have different k values. For example, the retraction of the puncture needle can be divided into two presses to complete, then k can be 4. For example, the retraction of the puncture needle can be combined with the release of the proximal anchor into one press to complete, then k can be 2.

[0215] It can be understood that for instruments that use the elastic force of an elastic part to drive the puncture needle, when the instrument leaves the factory, in order to ensure the service life of the corresponding elastic part, the elastic part is usually put on the shelf in an unstretched state or a slightly stretched state. In this case, it is necessary to first press the drive loader 2020 to stretch the elastic part and accumulate force before the puncture needle can be fired. Therefore, the number m of the slots 42c needs to be increased by 1 accordingly to the number required to complete n groups of implants to meet this type of situation.

[0216] After completing the implantation of a group of implants, continue pressing the drive loader 2020 to proceed with the next group of implants. Each group of implants requires the actuating protrusion 41c to trigger the release of the proximal anchor. Therefore, n actuating protrusions 41c are correspondingly set on the proximal anchor actuating wheel 2040, and the position of each actuating protrusion 41c corresponds to the position of the last slot 42c in a group of implants, so as to complete multiple cycles of implantation in one operation and intermittent release of the proximal anchor.

[0217] Taking FIG1 as an example, FIG1 is a state of the device using an elastic member to drive the puncture needle when it leaves the factory. The proximal anchoring actuating wheel 2040 starts to rotate from the position shown in FIG1. ​​The driving loader 2020 is pressed 4 times to complete the implantation of the first group of implants. The proximal anchoring actuating wheel 2040 rotates through the center angle 4*α corresponding to the first four slots 42c. When the proximal anchoring actuating wheel 2040 rotates through the center angle α corresponding to the first slot 42c, the driving loader 2020 accumulates force for releasing the elastic member of the puncture needle; the proximal anchoring actuating wheel 2040 rotates through the center angle 4*α corresponding to the first slot 42c. When the second locking groove 42c is rotated by the center angle α, the loader 2020 is driven to release the puncture needle. When the proximal anchor actuator wheel 2040 is rotated by the center angle α, the loader 2020 is driven to retract the puncture needle, releasing the distal anchor and simultaneously accumulating force for the elastic member that releases the puncture needle. When the proximal anchor actuator wheel 2040 is rotated by the center angle α, the activating protrusion 41c abuts the release lever 32c, driving the loader 2020 to release the proximal anchor. As can be seen from the above, the final step of releasing the proximal anchor perfectly coordinates with the previous step, preventing premature release and ensuring reliable release. Continuing to press the loader 2020 enters the next cycle of the implantation operation, with the other activating protrusion 41c gradually approaching the release lever 32c as the pressure is applied.

[0218] Preferably, n is not greater than 5. The larger n is, the more slots 42c are formed on the circumference of the proximal anchoring actuating wheel 2040, which increases the difficulty of processing and requires higher control accuracy of the device, which is not conducive to production and use.

[0219] Referring to Figure 7, in other specific embodiments, the transmission mechanism includes a transmission gear, a worm 61c, and a worm wheel 62c. The rotation of the drive loader 2020 is sequentially transmitted to the transmission gear, worm 61c, and worm wheel 62c through meshing. The transmission gear and worm 61c are fixedly connected, for example, as an integral structure, with their rotating shafts 21c perpendicular to the paper, and the rotating shaft 21c of the worm wheel 62c horizontally parallel to the paper. Pressing the drive loader 2020 drives the worm 61c to rotate clockwise, which in turn rotates the worm wheel 62c and drives the proximal anchoring actuator wheel 2040 via the cam 63c. Specifically, a ratchet transmission is used between the worm wheel 62c and the cam 63c to ensure that the cam 63c can only rotate in one direction, and their rotating shafts 21c coincide with each other. Cam 63c followers are evenly arranged around the circumference of the proximal anchoring actuator wheel 2040, and the cam 63c is provided with an oblique guide groove that cooperates with the cam 63c followers. When the driver loader 2020 rotates counterclockwise, the cam follower 63c moves within the oblique guide slot due to the abutment of the oblique guide slot, causing the proximal anchor actuator wheel 2040 to rotate counterclockwise. When the driver loader 2020 rotates clockwise to reset, the cam 63c remains stationary. Pressing the driver loader 2020 again pushes the cam follower 63c previously located within the oblique guide slot out of the slot. The adjacent cam follower 63c then enters the slot, and the above transmission process repeats.

[0220] Referring to FIG8 , in other specific embodiments, the transmission mechanism includes a balance wheel 71c. The drive loader 2020 meshes with the balance wheel 71c for transmission. Pressing the drive loader 2020 causes it to rotate counterclockwise, which in turn causes the balance wheel 71c to rotate clockwise. The balance wheel 71c and the proximal anchoring actuator wheel 2040 are driven by a left pawl 72ac and a right pawl 72bc. One end of the pawl is rotatably connected to the balance wheel 71c, while the other end abuts against a tooth 43c on the proximal anchoring actuator wheel 2040. The pawl permits counterclockwise rotation of the proximal anchoring actuator wheel 2040 and prohibits clockwise rotation. Accordingly, the two surfaces of the tooth 43c can be designed asymmetrically to achieve this. When the balance wheel 71c rotates clockwise, the other end of the pawl drives the gear teeth 43c, causing the proximal anchoring actuator wheel 2040 to rotate counterclockwise. When the balance wheel 71c returns to its original position with the driving loader 2020, the other end of the pawl slides out of the gear teeth 43c currently in contact and into the tooth groove of the adjacent gear teeth 43c. It will be understood that the pawl in this embodiment is equivalent to the lever 32c in the embodiment of FIG. 1 and also serves as the limiting function of the limiting pawl 40c. The gear teeth 43c are equivalent to the retaining grooves 42c in the embodiment of FIG. 1 , and the number of gear teeth 43c is arranged in the same manner as the retaining grooves 42c. A spring can be provided between the pawl and the housing to ensure that the pawl maintains contact with the proximal anchoring actuator wheel 2040.

[0221] Based on the same inventive concept, an embodiment of the present application also provides a medical device, which includes the delivery system, proximal anchor release mechanism and proximal anchor as described above, and the driving loader 2020 drives the proximal anchor to be intermittently released through the proximal anchor release mechanism to implant the proximal anchor into the human body.

[0222] The medical device in the above embodiment relies on the corresponding intermittent release of multiple proximal anchors in any of the above embodiments, without the need to replace a new delivery system, making the various operation steps of the implantation surgery smoother and more coherent, reducing the difficulty of operation and improving the surgical effect, which will not be repeated here.

[0223] Compared with the related art, the technical solution of the present application has beneficial effects.

[0224] For example, the operation of releasing the proximal anchor is integrated into the drive loader. During the operation, it is only necessary to operate the drive loader to rotate it back and forth, and the proximal anchor actuator wheel can be driven to rotate step by step. During the multiple cycles of implantation, multiple proximal anchors can be released intermittently. The various operation steps of the implantation operation are smoother and more coherent, which reduces the difficulty of operation and improves the surgical effect.

[0225] For example, when the delivery system performs the final step of releasing the proximal anchor, it can perfectly coordinate with the previous step, avoiding premature release and ensuring the reliability of the release.

[0226] For example, a delivery system can be used for multiple implants without the need to replace the delivery system, which reduces various costs, reduces medical waste, and saves operating table space.

[0227] Although specific embodiments have been described above, these embodiments are not intended to limit the scope of the present disclosure, even when only a single embodiment is described with respect to specific features. The feature examples provided in the present disclosure are intended to be illustrative, not limiting, unless otherwise stated. In specific implementations, the technical features of one or more dependent claims may be combined with the technical features of the independent claims, depending on actual needs and where technically feasible, and the technical features from the corresponding independent claims may be combined in any appropriate manner rather than solely through the specific combinations listed in the claims.

[0228] Although the present application is disclosed as above, the present application is not limited thereto. Any person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present application. Therefore, the scope of protection of the present application shall be based on the scope defined by the claims.

Claims

1. A medical device for interventional treatment, used for implanting an implant into human tissue, the implant comprising a distal anchor and a connector connected to each other, characterized in that: include: An implant delivery mechanism, the implant delivery mechanism comprising a puncture needle and a needle actuator, the puncture needle being used to accommodate the distal anchor and the connector, the needle actuator being connected to the puncture needle and synchronously moving along the axial direction of the puncture needle; A trigger mechanism is detachably connected to the implant delivery mechanism, wherein the trigger mechanism comprises a force storage release member, and the force storage release member is connected to the needle actuator and moves synchronously.

2. The medical device for interventional treatment according to claim 1, characterized in that: It also includes an installation locking mechanism; the installation locking mechanism includes a knob and a locking tongue, the knob is rotatably arranged on one of the implant delivery mechanism and the trigger mechanism; a protrusion is arranged on the locking tongue, and a first guide groove matching the protrusion is arranged on the knob; a locking tongue channel for accommodating the locking tongue is arranged on one of the implant delivery mechanism and the trigger mechanism, the opening of the locking tongue channel on one of the implant delivery mechanism and the trigger mechanism is a first slot, and the other of the implant delivery mechanism and the trigger mechanism is provided with a second slot at a position corresponding to the first slot; under the limitation of the protrusion by the first guide groove and the limitation of the locking tongue by the locking tongue channel, the back and forth rotation of the knob drives the locking tongue to extend and retract at the second slot.

3. The medical device for interventional treatment according to claim 2, characterized in that: The installation locking mechanism also includes a first limit rod, which is connected to the knob and rotates synchronously; a first limit slot is set on the needle actuator; when the lock tongue is not inserted into the second slot, the first limit rod abuts against the first limit slot to limit the movement of the needle actuator; when the lock tongue is inserted into the second slot, the first limit rod disengages from the first limit slot to release the restriction on the needle actuator.

4. The medical device for interventional treatment according to claim 2, characterized in that: The installation locking mechanism also includes a second limiting rod, which is connected to the knob and rotates synchronously; a limiting groove for accommodating the second limiting rod and allowing the second limiting rod to move therein is provided on one of the implant delivery mechanism and the trigger mechanism; and the second limiting rod limits the rotation of the knob when it abuts against the end of the limiting groove.

5. The medical device for interventional treatment according to claim 2, characterized in that: The trigger mechanism also includes a limit pin, which is arranged on the moving path of the force release member in the proximal direction; the force release member moves proximally until it abuts against the limit pin to limit the maximum distance of the force release member moving proximally; the limit pin disengages from the abutment with the force release member under the action of external force to release the restriction on the force release member.

6. The medical device for interventional treatment according to claim 5, characterized in that: The trigger mechanism also includes a limit plate, which is movably arranged inside the trigger mechanism; when the lock tongue is not inserted into the second slot, one end of the limit plate abuts against the limit pin to limit the movement of the limit pin; when the lock tongue is inserted into the second slot, the lock tongue abuts against and pushes the other end of the limit plate, so that the limit plate is disengaged from the abutment with the limit pin after a certain displacement, so as to release the restriction on the limit pin.

7. The medical device for interventional treatment according to claim 1, characterized in that: The trigger mechanism also includes: A driving loading component, wherein the driving loading component is connected to the force storage release component through a transmission gear, and the three are driven by a sawtooth structure; A driving elastic member, the distal end of which is fixed and the proximal end of which is connected to the force storage release member; The transmission gear includes a limiting portion and a non-limiting portion. When the limiting portion contacts the force storage release member, the driving loader drives the force storage release member to move toward the proximal end and stretches the driving elastic member; when the non-limiting portion contacts the force storage release member, the driving elastic member contracts and drives the force storage release member to move toward the distal end.

8. The medical device for interventional treatment according to claim 1, characterized in that: One of the needle actuator and the force storage release member is provided with a protrusion, and the other is provided with a recess matched with the protrusion.

9. The medical device for interventional treatment according to claim 7, characterized in that: The trigger mechanism also includes a reset mechanism, which includes a reset elastic member, one end of which is fixed, and the other end is connected to the driving loader; the driving loader rotates along a first direction under the action of an external force to cause the reset elastic member to deform, and after the external force is removed, the reset elastic member restores the deformation and drives the driving loader to rotate and reset in the opposite direction of the first direction.

10. The medical device for interventional treatment according to claim 9, characterized in that: The trigger mechanism also includes a first limit claw, which abuts against the transmission gear; when the driving loader rotates along the first direction to drive the transmission gear, the first limit claw allows the transmission gear to rotate, and when the driving loader rotates in the opposite direction of the first direction to reset, the first limit claw prevents the transmission gear from rotating.

11. The medical device for interventional treatment according to claim 9, characterized in that: The implant also includes a proximal anchor, which is connected to the connecting piece; the implant delivery mechanism also includes a push rod and a push rod limiter abutting each other; the trigger mechanism includes a proximal anchor actuating wheel, and the drive loader is transmission-connected to the proximal anchor actuating wheel; when the proximal anchor actuating wheel abuts against the push rod limiter under the drive of the drive loader, the push rod limiter disengages from the push rod, and the push rod pushes the proximal anchor to connect to the connecting piece.

12. The medical device for interventional treatment according to claim 11, characterized in that: An actuating protrusion is arranged on the proximal anchoring actuating wheel, and an actuating lever is arranged on the push rod limiting member; the driving loader drives the proximal anchoring actuating wheel to rotate, so that the actuating protrusion gradually approaches the actuating lever until it abuts against the actuating lever.

13. The medical device for interventional treatment according to claim 11, characterized in that: The trigger mechanism also includes a second limit claw, which abuts against the proximal anchor actuating wheel; when the drive loader rotates along the first direction to drive the proximal anchor actuating wheel, the second limit claw allows the proximal anchor actuating wheel to rotate, and when the drive loader rotates in the opposite direction of the first direction to reset, the second limit claw prevents the proximal anchor actuating wheel from rotating.

14. The medical device for interventional treatment according to claim 1, characterized in that: The implant delivery mechanism also includes a delivery pipeline, which is used to accommodate the puncture needle; the trigger mechanism also includes an endoscope channel, which is used to accommodate an endoscope; wherein, when the implant delivery mechanism is installed on the trigger mechanism, the endoscope channel is arranged parallel to the delivery pipeline.

15. The medical device for interventional treatment according to claim 14, characterized in that: It also includes a sheath tube, which is sleeved outside the endoscope channel and the delivery pipeline.

16. The medical device for interventional treatment according to claim 1, characterized in that: include: A wire actuator connected to the connecting member, wherein the movement of the wire actuator toward the proximal end drives the connecting member to move toward the proximal end; Wherein, the wire actuator is connected to the needle actuator, and when the needle actuator moves toward the distal end, the wire actuator and the needle actuator move synchronously; when the needle actuator moves toward the proximal end, the wire actuator moves lagging behind the needle actuator.

17. The medical device according to claim 16, characterized in that It also includes a limiting mechanism, which is suitable for limiting the movement of the wire actuator when the needle actuator moves toward the distal end or the proximal end, and releasing the limit on the wire actuator after the needle actuator moves a certain distance.

18. The medical device according to claim 17, characterized in that It also includes a first reset elastic member, the two ends of which are respectively connected to the needle actuator and the wire actuator, and are suitable for compressing or stretching when the wire actuator is restricted from moving, and driving the wire actuator to move after the restriction on the wire actuator is released.

19. The medical device according to claim 18, characterized in that The limiting mechanism comprises a first limiting claw, which is suitable for being clamped in the limiting slot of the wire actuator when the needle actuator starts to move in the proximal direction, and being driven by the needle actuator to disengage from the limiting slot after the needle actuator moves a certain distance.

20. The medical device according to claim 19, characterized in that The first limit claw abuts against the needle actuator; the needle actuator is provided with a boss, and after the needle actuator moves a certain distance in the proximal direction, the boss drives the first limit claw to disengage from the limit slot.

21. The medical device according to claim 20, characterized in that The limiting mechanism further comprises a second resetting elastic member, which is connected to the first limiting claw and is adapted to apply pressure to the first limiting claw so as to keep the first limiting claw in abutment with the needle actuator.

22. The medical device according to claim 18, characterized in that The limiting mechanism includes a second limiting claw, which is arranged on the moving path of the linear actuator. When the second limiting claw abuts against the limiting tooth of the linear actuator, it limits the movement of the linear actuator. After the first reset elastic member is compressed or stretched to a preset pressure, the first reset elastic member drives the linear actuator to break away from the restriction of the second limiting claw.

23. The medical device according to claim 22, characterized in that The limiting mechanism comprises a pinch plate, the pinch plate is provided with a slideway, the linear actuator is slidably arranged in the slideway; the second limiting claw is arranged in the slideway.

24. The medical device according to any one of claims 16 to 23, characterized in that: It also includes a slide groove and a protrusion, one of which is arranged on the needle actuator, and the other is arranged on the wire actuator, and the protrusion is slidably arranged in the slide groove; when the protrusion abuts against the end of the slide groove, the needle actuator and the wire actuator move synchronously.

25. The medical device according to any one of claims 18 to 23, characterized in that: It also includes a guide rod, both ends of which are connected to the needle actuator and the wire actuator respectively; one of the needle actuator and the wire actuator moves synchronously with the guide rod, and the other slides along the axial direction of the guide rod.

26. The medical device according to claim 25, characterized in that The first resetting elastic member is sleeved on the guide rod.

27. The medical device according to any one of claims 16 to 23, characterized in that: It also includes a connecting member guide tube, which is sleeved outside the connecting member, one end of which is connected to the wire actuator, and the other end of which penetrates into the puncture needle.

28. The medical device according to claim 1, characterized in that include: A force-storage release member connected to the puncture needle and adapted to reciprocate between a distal end and a proximal end, wherein movement of the force-storage release member toward the distal end or the proximal end drives the puncture needle to move in the same direction; A driving loading member connected to the force storage release member through a first transmission mechanism, wherein the driving loading member can be reciprocatingly rotated, wherein the reciprocating rotation is rotation in a first direction and rotation in a direction opposite to the first direction to reset; A driving elastic member, one end of which is fixed and the other end of which is connected to the force storage release member, and is suitable for stretching or compressing when the force storage release member moves from the distal end to the proximal end; When the driving loader rotates along the first direction to retract the puncture needle, the force release member moves from the distal end to the proximal end; when the driving loader rotates along the first direction to release the puncture needle, the force release member disengages from the first transmission mechanism and moves from the proximal end to the distal end under the drive of the driving elastic member to restore its deformation.

29. The medical device according to claim 28, characterized in that The first transmission mechanism includes a limiting portion and a free portion; when the limiting portion contacts the force release member, the force release member moves from the distal end to the proximal end under the drive of the first transmission mechanism; when the free portion is opposite to the force release member, the force release member is disengaged from the first transmission mechanism.

30. The medical device according to claim 29, characterized in that The first transmission mechanism includes a driving wheel and a driven wheel; the driving loader is connected to the driving wheel, and the rotation of the driving loader drives the driving wheel to rotate; the driving wheel is connected to the driven wheel, and when the driving loader rotates along a first direction, the driven wheel rotates synchronously with the driving wheel; when the driving loader rotates in the opposite direction of the first direction to reset, the driven wheel remains stationary.

31. The medical device according to claim 30, characterized in that The first transmission mechanism also includes a limit claw, which abuts against the driven wheel; when the driving loader rotates along the first direction, the limit claw allows the driven wheel to rotate; when the driving loader rotates in the opposite direction of the first direction to reset, the limit claw prohibits the driven wheel from rotating.

32. The medical device according to claim 31, characterized in that The first transmission mechanism also includes a lever and a protrusion, the lever is arranged on the driving wheel, and the protrusion is arranged on the driven wheel; when the driving loader rotates along the first direction, the lever abuts and pushes the protrusion to make the driven wheel rotate synchronously with the driving wheel; when the driving loader rotates in the opposite direction of the first direction to reset, the lever disengages from the protrusion to stop pushing the protrusion.

33. The medical device according to claim 32, characterized in that The lever is rotatably arranged relative to the driving wheel; there are at least two protrusions, which are distributed in the circumferential direction of the driven wheel; when the driving loader rotates and resets in the opposite direction of the first direction, the driving wheel drives the lever to rotate synchronously until it abuts against another protrusion, and the other protrusion presses the lever down until the rotation of the driving wheel drives the lever to pass over the other protrusion, and the lever is lifted again.

34. The medical device according to claim 33, characterized in that The first transmission mechanism also includes a reset elastic member, the two ends of which are respectively connected to the lever and the driving wheel; when the lever is pressed down by the other protrusion, the reset elastic member is compressed; after the lever passes over the other protrusion, the reset elastic member restores its deformation and drives the lever to be lifted again.

35. The medical device according to claim 31, characterized in that The driving wheel and the driven wheel are driven by a ratchet mechanism.

36. The medical device according to claim 31, characterized in that The driving wheel is meshed with the driving loading member for transmission or is driven through a connecting rod.

37. The medical device according to claim 30, characterized in that The limiting portion and the free portion are arranged at intervals along the circumferential direction of the driven wheel.

38. The medical device according to claim 37, characterized in that The limiting portion is a toothed portion, and the free portion is a toothless portion; the toothed portion is provided with gear teeth, and the force storage release member is provided with a rack; when the gear teeth are meshed with the rack, the force storage release member moves from the distal end to the proximal end under the drive of the driven wheel.

39. The medical device according to claim 37, characterized in that The limiting portion is a guide bar, the free portion is a guide bar breakpoint, and the force storage release member is provided with a slide groove; when the guide bar is inserted into the slide groove and moves along the slide groove, the force storage release member moves from the distal end to the proximal end driven by the driven wheel.

40. The medical device according to claim 37, wherein: The limiting portion is a convex portion, the free portion is a gap portion, the convex portion includes a plurality of convex points arranged at intervals, and the force storage release member is provided with a convex strip; when the convex point cooperates with the convex strip, the force storage release member moves from the distal end to the proximal end under the drive of the driven wheel.

41. The medical device according to claim 1, characterized in that include: A proximal anchoring actuating wheel, wherein the proximal anchoring actuating wheel is unidirectionally rotatable; An actuating bump is arranged on the proximal anchoring actuating wheel; A driving loader is drivingly connected to the proximal anchoring actuating wheel, and the driving loader is arranged to reciprocate in two directions; Wherein, a single rotation of the driving loader in a first direction drives the proximal anchoring actuating wheel to rotate a fixed angle; when the driving loader rotates and resets in a second direction, the proximal anchoring actuating wheel remains stationary; the first direction and the second direction are opposite; As the driving loader rotates toward the first direction for multiple times, the actuating protrusion gradually approaches the proximal anchor release mechanism until it abuts against and triggers the proximal anchor release mechanism.

42. The medical device according to claim 41, characterized in that A dividing structure is provided on the circumference of the proximal anchoring actuating wheel, and the dividing structure divides the circumference of the proximal anchoring actuating wheel into the fixed angle; the number of the dividing structures m=kn or kn+1, wherein k is the number of rotations of the driving loader in the first direction required to complete the implantation of a group of the implants, and n is the number of groups of the implants that can be implanted after one rotation of the proximal anchoring actuating wheel; there are n actuating protrusions, and during the implantation process of each group of the implants, the last rotation of the driving loader causes one of the actuating protrusions to abut against and trigger the proximal anchoring release mechanism.

43. The medical device according to claim 42, characterized in that It also includes a second transmission mechanism, through which the drive loader is connected to the proximal anchoring actuating wheel; the second transmission mechanism includes a transmission wheel and a transmission member; the drive loader is connected to the transmission wheel, and the two rotate synchronously; one end of the transmission member is connected to the transmission wheel, and when the drive loader rotates in the first direction, the interaction between the other end of the transmission member and one of the dividing structures drives the proximal anchoring actuating wheel to rotate; when the drive loader rotates and resets in the second direction, the transmission member disengages from one dividing structure and approaches an adjacent dividing structure.

44. The medical device according to claim 43, characterized in that The graduation structure is a slot, the transmission member is a lever, and when the driving loader rotates in the first direction, the other end of the lever abuts against one of the slots to drive the proximal anchoring actuating wheel to rotate.

45. The medical device according to claim 44, characterized in that The second transmission mechanism further comprises a limit pawl, which abuts against the gear teeth of the proximal anchoring actuating wheel. When the transmission wheel rotates and resets in the first direction, the limit pawl keeps the proximal anchoring actuating wheel stationary.

46. ​​The medical device according to claim 45, characterized in that The shifting rod is rotatably arranged relative to the transmission wheel; when the transmission wheel rotates and resets toward the first direction, the one clamping slot pushes the shifting rod to rotate and disengage from the one clamping slot.

47. The medical device according to claim 46, characterized in that It also includes a reset elastic member, the two ends of which are respectively connected to the lever and the transmission wheel, and are compressed when the one slot pushes the lever to rotate, and drive the lever to approach another slot adjacent to the one slot after the lever is separated from the one slot.

48. The medical device according to claim 43, characterized in that The second transmission mechanism includes a transmission gear, a worm and a worm wheel; the driving loader transmits the power to the worm and the worm wheel in sequence by meshing with the transmission gear; the transmission member is a cam, the dividing structure is a cam follower, and the worm wheel and the cam ratchet transmission enable the cam to rotate in one direction; when the driving loader rotates in a first direction, the cam abuts against one of the cam followers to drive the proximal anchoring actuator wheel to rotate, and when the driving loader rotates in a second direction to reset, the cam remains stationary.

49. The medical device according to claim 43, characterized in that The graduation structure is a gear tooth set on the proximal anchor actuating wheel, and the transmission member is a pawl; when the driving loader rotates in a first direction, the pawl abuts against one of the gear teeth to drive the proximal anchor actuating wheel to rotate, and when the driving loader rotates in a second direction to reset, the pawl disengages from the one gear tooth, and the proximal anchor actuating wheel remains stationary.

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