Plugging device conveying device and system

Abstract

The utility model relates to an occluder conveying device and system. The conveying device is composed of a conveying part, a handle part, a push rod part and a locking part. The clamping jaw is used for being connected with a ball head of the plugging device, and in the initial natural state, the positioning spring in the handle part can continuously provide axial thrust for the push rod part, so that the storage sheath connected with the push rod part can move towards the far end, the clamping jaw is stored and limited in the circumferential direction, and the situation that the clamping jaw penetrates out of the storage sheath to release the plugging device is avoided; meanwhile, the locking part can axially limit the push rod part, so that the push rod part cannot move front and back, the clamping jaw is in a locked state, and the situation that the plugging device is released due to accidental exposure of the clamping jaw in the conveying process is avoided.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments for interventional surgery, and in particular to an occluder delivery device and system. Background Art

[0002] The main treatments for congenital heart diseases such as patent foramen ovale, atrial septal defect, and ventricular septal defect include surgical treatment, interventional treatment, and conservative drug treatment. Currently, the most commonly used and effective implantable device in minimally invasive treatment is the occluder.

[0003] The existing occluder delivery system mostly uses a delivery cable with a threaded head, which can only be used to deliver occluders with threaded connectors. In addition, occluders with a threaded structure are not easy to endothelialize after being implanted in the heart, and the occlusion effect is not ideal. Therefore, an occluder with a ball head design at the end can effectively solve the problem of unsatisfactory occlusion effect.

[0004] However, most of the existing occluder delivery systems are suitable for occluders with threaded structures, which have complex structures and are inconvenient to operate. Therefore, how to provide an occluder delivery system suitable for a ball-head connection design has become a technical problem that needs to be solved urgently. Utility Model Content

[0005] The utility model discloses an occluder conveying device and a system, aiming to solve the technical problems existing in the prior art.

[0006] The utility model adopts the following technical solutions:

[0007] On the one hand, an embodiment of the utility model provides an occluder delivery device, comprising a delivery portion, a handle portion, and a push rod portion;

[0008] The delivery part includes a storage sheath and a delivery steel cable and a clamping claw arranged therein. The storage sheath can move axially relative to the delivery steel cable. The proximal end of the delivery steel cable is connected to the handle part, and the distal end of the delivery steel cable is connected to the clamping claw. The clamping claw is used to clamp the delivery connecting piece of the occluder. The clamping claw can release the delivery connecting piece after being exposed from the distal end of the storage sheath.

[0009] The push rod part is axially movably arranged on the handle part, and the push rod part is connected to the proximal end of the receiving sheath. The push rod part can drive the receiving sheath to move axially to receive or expose the clamping claws.

[0010] As a preferred technical solution, the handle portion is provided with:

[0011] - A handle window, which is opened along the axial direction of the handle portion and allows the push rod portion to slide therein;

[0012] - A handle rail groove is axially arranged below the handle window and is slidably matched with the push rod portion to allow the push rod portion to move axially along the handle rail groove.

[0013] As a preferred technical solution, the length of the handle rail groove is not less than the length of the clamping claw.

[0014] As a preferred technical solution, the push rod portion is provided with grooves, and the grooves are slidably arranged in the handle rail grooves.

[0015] As a preferred technical solution, a steel cable connector is provided inside the proximal end of the handle portion, and the steel cable connector is connected to the proximal end of the conveying steel cable.

[0016] As an optimal technical solution, the distal end of the push rod is connected to the proximal end of the storage sheath, and a positioning spring is provided between the proximal end of the push rod and the steel cable connector, and the two ends of the positioning spring respectively abut the proximal end of the push rod and the steel cable connector.

[0017] As a preferred technical solution, it also includes a locking part, which is annularly sleeved on the outside of the handle part, the locking part is provided with an internal thread, and the handle part is provided with an external thread, and the two threads are matched;

[0018] The external thread is arranged at the proximal end of the handle window. When the locking part rotates to the distal end of the external thread, the locking part is used to axially limit the push rod part. When the locking part rotates toward the proximal end of the external thread, the locking part releases the axial limitation of the push rod part.

[0019] As a preferred technical solution, an operation auxiliary portion is further provided on the outer side of the locking portion, and the operation auxiliary portion is used to provide friction force for the operator when rotating the locking portion.

[0020] As a preferred technical solution, a distal sleeve is provided at the distal end of the storage sheath, and the distal sleeve is used to accommodate the clamping claws and the delivery connector.

[0021] As a preferred technical solution, the clamping jaw is provided with a clamping groove, the contour of which matches the non-threaded conveying connection piece.

[0022] On the other hand, an embodiment of the present invention provides an occluder delivery system, comprising the occluder delivery device as described in any one of the above items, and also comprising an occluder.

[0023] As a preferred technical solution, a delivery connector is provided at the proximal end of the occluder, and the delivery connector is releasably connected to the occluder delivery device;

[0024] The delivery connection is configured as a non-threaded ball head.

[0025] The technical solution adopted by the utility model can achieve the following beneficial effects:

[0026] (1) The utility model provides an occluder delivery device, the structure of which is mainly composed of a delivery part, a handle part, a push rod part and a locking part; the clamping claw is used to connect with the ball head of the occluder. In the initial natural state, the positioning spring in the handle part can continuously provide axial thrust to the push rod part, so that the storage sheath connected to the push rod part can move toward the distal end and store the clamping claw to limit the circumferential position of the push rod part to prevent the clamping claw from penetrating from the storage sheath and releasing the occluder. At the same time, the locking part can limit the axial position of the push rod part so that the push rod part cannot move forward and backward, and the clamping claw is in a locked state to prevent the clamping claw from being accidentally exposed during the delivery process and releasing the occluder.

[0027] In the working state, the occluder delivery device together with the occluder is delivered to the target position in the body along the sheath tube, and the release angle of the occluder is appropriately adjusted as needed. When the occluder needs to be released subjectively, the locking part is rotated proximally to release the limit of the push rod part. At this time, the push rod part can drive the receiving sheath to move proximally to expose the clamping claws. After the clamping claws and the ball head of the occluder are exposed from the receiving sheath, the clamping claws automatically open and release the occluder, thus completing the release operation of the occluder.

[0028] After the release is completed, the storage sheath is elastically acted upon by the positioning spring to store the clamping claws again, and the locking part is rotated toward the distal end to lock the push rod part again, and the delivery device is moved out of the body along the sheath, thus completing the entire occluder implantation process.

[0029] (2) The occluder delivery device provided by the utility model can effectively deliver an occluder with a ball-type connection design without a threaded structure, and can effectively lock the ball head during the delivery process to prevent the occluder from being unexpectedly released before subjective release, thereby improving safety during delivery; and can quickly unlock the occluder when the occluder is subjectively released, making the use of the entire delivery device more convenient and quicker, thereby improving the surgical efficiency of medical personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the following is a brief introduction to the drawings required for the description of the embodiment, which constitute a part of the utility model. The schematic embodiment of the utility model and its description explain the utility model and do not constitute an improper limitation of the utility model. In the drawings:

[0031] Figure 1 It is a structural schematic diagram of an occluder delivery device disclosed in one implementation of Example 1 of the utility model;

[0032] Figure 2 This is a structural exploded view of an occluder delivery device disclosed in one implementation of Example 1 of the present utility model;

[0033] Figure 3 for Figure 2A in the enlarged view;

[0034] Figure 4 This is a diagram of the internal structure of the handle portion disclosed in one implementation of Example 1 of the utility model;

[0035] Figure 5 It is a structural diagram of a push rod portion disclosed in an implementation manner of Example 1 of the utility model;

[0036] Figure 6 This is a structural diagram of a locking portion disclosed in an implementation manner of Example 1 of the utility model;

[0037] Figure 7 It is a schematic diagram of a locking portion locking the push rod portion disclosed in an implementation manner of Example 1 of the utility model;

[0038] Figure 8 for Figure 7 Enlarged view of point B in the middle;

[0039] Fig. 9 It is a schematic diagram of the locking part unlocking the push rod part disclosed in one implementation of Example 1 of the utility model;

[0040] Fig.10 for Fig. 9 Enlarged view of point C in the middle;

[0041] Fig.11 This is a schematic diagram of the connection between the clamp and the occluder disclosed in one implementation of Example 1 of the utility model.

[0042] Description of reference numerals:

[0043] The delivery part 10, the storage sheath 11, the distal sleeve 111, the proximal sleeve 112, the delivery cable 12, the clamping claw 13, the handle part 20, the cable connector 21, the handle window 22, the handle rail groove 23, the external thread 24, the push rod part 30, the proximal end 31 of the push rod part, the distal end 32 of the push rod part, the groove 33, the positioning spring 34, the locking part 40, the internal thread 41, the operation auxiliary part 42, the occluder 50, and the ball head 51. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in combination with the specific embodiments of the utility model and the corresponding drawings. In the description of the utility model, it should be noted that the term "or" is usually used in the sense of including "and / or", unless the content clearly indicates otherwise.

[0045] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification, so as to be understood and read by people familiar with this technology, and are not used to limit the limiting conditions that can be implemented in this utility model, so they have no substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that can be produced by the utility model and the purposes that can be achieved, should still fall within the scope of the technical contents disclosed in the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of narration, and are not used to limit the scope of implementation of the utility model. In the description of this application, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0047] In the field of interventional medical device technology, the direction close to the operator is generally defined as the proximal end, and the direction away from the operator is defined as the distal end. The direction of the central axis of an object such as a cylinder or a tube is defined as the axial direction. The radial direction refers to the direction passing through the central axis in the radial plane, for example, the straight line direction along the diameter or radius, or the straight line direction perpendicular to the central axis.

[0048] Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0049] Example 1

[0050] This embodiment 1 provides an occluder delivery device for connecting, delivering and releasing an occluder 50. The occluder 50 described in this embodiment refers to a device for implantation to treat congenital heart diseases such as patent foramen ovale, atrial septal defect, ventricular septal defect, etc.

[0051] In some embodiments, the occluder 50 includes an elastic braided mesh frame and a delivery connector; the elastic braided mesh frame further has two disks arranged opposite to each other on the left and right sides, and a waist-shaped flexible connector may be arranged between the two disks. After being implanted in the human body, the left and right disks can be positioned in the left heart and the right heart respectively, and the flexible connector can be positioned in the hole of the heart defect; the delivery connector is arranged at the end of one of the disks. In some embodiments, the delivery connector is configured as a ball head 51, such as Fig.11 The ball head 51 has a smooth surface and no thread structure to promote the endothelialization process after the occluder 50 is implanted.

[0052] In this embodiment, the specific structure or other configuration of the occluder 50 may refer to any implementation method disclosed in the prior art, and will not be described in detail here.

[0053] For ease of understanding, the occluder delivery device will be described in conjunction with the relevant structure of the occluder 50 in this embodiment, but the occluder delivery device does not include the occluder 50, but is merely a structure for delivering the occluder 50.

[0054] like Figure 1 — Figure 3 The occluder delivery device includes a delivery portion 10, a handle portion 20 and a push rod portion 30. The delivery portion 10 includes a storage sheath 11, a delivery cable 12 and a clamp 13. The distal end of the delivery cable 12 is connected to the clamp 13. The two are together inserted into the storage sheath 11 and can move axially relative to the storage sheath 11. The proximal ends of the storage sheath 11 and the delivery cable 12 are inserted into the handle portion 20. The push rod portion 30 is axially movably arranged on the handle portion 20. The push rod portion 30 is connected to the proximal end of the storage sheath 11. Through the movement of the push rod portion 30, the storage sheath 11 can be driven to move axially to store or expose the clamp 13; the clamp 13 is used to clamp the ball head 51 of the occluder 50, and can release the ball head 51 after being exposed from the distal end of the storage sheath 11.

[0055] In some embodiments, the inner diameter of the storage sheath 11 is larger than the outer diameter of the delivery cable 12 to ensure that the two can move freely axially; in some embodiments, similar to the sheath used in the field of interventional medicine, the storage sheath 11 can be configured as a multi-layer structure with reference to the structure of the sheath, specifically an inner layer, a braided layer and an outer layer can be provided, and reinforcing ribs can be further provided on the inner or outer side of the braided layer as needed, so that the storage sheath 11 can provide radial stiffness and axial flexibility at the same time, so as to avoid squeezing the delivery cable 12 and causing the two to be unable to move relative to each other.

[0056] In some embodiments, the storage sheath 11 may also be configured as any structure disclosed in the prior art, which will not be listed here one by one.

[0057] In some embodiments, the proximal end of the storage sheath 11 is provided with a proximal sleeve 112, and the distal end of the storage sheath 11 is provided with a distal sleeve 111, the proximal sleeve 112 is used to be fixedly connected to the distal end 32 of the push rod portion, and the inner diameter of the distal sleeve 111 is larger than the inner diameter of the storage sheath 11, and is preferably adapted to the outer diameter of the clamping claw 13 clamping the ball head 51 to accommodate the clamping claw 13 and the ball head 51. Specifically, the distal sleeve 111 can be made of metal material or other composite materials to provide sufficient structural strength to radially limit the clamping claw 13 clamping the ball head 51.

[0058] like Figure 3 In some embodiments, the clamping jaw 13 is provided with a clamping groove, which is configured as an arc-shaped hollow frame, and its arc-shaped profile matches the ball head 51 with a threadless structure. Inward protrusions or barbs can be provided at both ends of the clamping groove to ensure stable clamping of the ball head 51. In some embodiments, the clamping jaw 13 is made of shape memory metal and is heat-formed into an "eight"-shaped open structure. When the clamping jaw 13 is exposed from the distal sleeve 111, it loses radial limit and is automatically opened due to its shape memory property, and the ball head 51 is released.

[0059] In some embodiments, a steel cable connector 21 is provided inside the proximal end of the handle portion 20, and the proximal end of the delivery steel cable 12 is fixedly connected to the steel cable connector 21 to ensure that the delivery steel cable 12 can maintain its position when the storage sheath 11 is moved; optionally, the steel cable connector 21 can be configured as a long cylinder, with an axially arranged groove or blind hole inside, and the proximal end of the delivery steel cable 12 is passed therethrough, and the two can be fixedly connected by welding, bonding, threaded connection, etc.

[0060] like Figure 4 In some embodiments, the handle portion 20 is formed by splicing and assembling two left and right shells and fixing them together. The handle portion 20 is further provided with a handle window 22 and a handle rail groove 23. The handle window 22 is axially opened on the shell on one side of the handle portion 20. The push rod portion 30 protrudes out of the handle window 22 and can slide therein for the doctor to operate. The handle rail groove 23 is arranged below the handle window 22, and preferably the handle rail groove 23 is provided in both the left and right shells. Molars 33 are provided on both sides of the push rod portion 30, such as Figure 5 The groove teeth 33 are slidably disposed in the handle rail groove 23 , so that the push rod portion 30 can move axially along the handle rail groove 23 .

[0061] In some embodiments, the length of the handle rail groove 23 is not less than the length of the clamping jaw 13; when the push rod portion 30 moves, it can drive the axial movement of the storage sheath 11 together. When the push rod portion 30 moves proximally until the proximal position of the handle rail groove 23, the clamping jaw 13 can be fully exposed and release the ball head 51. When the push rod portion 30 moves distally until the distal position of the handle rail groove 23, the clamping jaw 13 can be fully received in the distal sleeve 111.

[0062] In some embodiments, the outer surface of the handle portion 20 is provided with "lock" and "unlock" marks, which can be configured as Chinese marks or English "LOCK", "UNLOCK" marks as needed. Taking the English mark as an example, "LOCK" is set at the proximal position of the handle rail groove 23. When the push rod moves to the position of the "LOCK" mark, the clamping claw 13 is completely received in the distal sleeve 111, such as Figure 7 , Figure 8 "UNLOCK" is also set at the proximal position of the handle rail groove 23, but is farther from the proximal side of the handle rail groove 23 than "LOCK". When the push rod moves to the position marked with "UNLOCK", the clamping jaw 13 is fully exposed and opened to release the ball head 51, such as Fig. 9 , Fig.10 .

[0063] In some embodiments, the distal end 32 of the push rod portion is fixedly connected to the proximal sleeve 112 by welding, bonding, threaded connection, etc., and a positioning spring 34 is provided between the proximal end 31 of the push rod portion and the steel cable connector 21. The two ends of the positioning spring 34 respectively abut the proximal end 31 of the push rod portion and the steel cable connector 21. The positioning spring 34 can continuously provide axial thrust for the push rod portion 30, so that the storage sheath 11 connected to the push rod portion 30 remains in the distal position in a natural state, ensuring that the distal sleeve 111 can accommodate the clamp 13 and circumferentially limit it to prevent the clamp 13 from passing through the storage sheath 11 and releasing the occluder 50.

[0064] like Figure 6In some embodiments, a locking portion 40 is further provided on the outside of the handle portion 20. The locking portion 40 is annularly sleeved on the outside of the handle portion 20, and an external thread 24 is provided on the outer surface of the handle portion 20, and an internal thread 41 is provided on the inner surface of the locking portion 40, and the two threads are matched; in some embodiments, the external thread 24 is provided at the proximal end of the handle window 22. When the locking portion 40 rotates to the distal end of the external thread 24, the storage sheath 11 is located at the distal end due to the elastic action of the positioning spring 34. At this time, the locking portion 40 can axially limit the push rod portion 30, so that the push rod portion 30 cannot move toward the proximal end, thereby avoiding the release of the clamping claw 13 caused by the proximal movement of the storage sheath 11 relative to the conveying cable 12; when the locking portion 40 rotates to the proximal end of the external thread 24, the locking portion 40 releases the axial limitation of the push rod portion 30, and at this time the push rod portion 30 can drive the storage sheath 11 to move forward and backward.

[0065] In some embodiments, an operation auxiliary part 42 is further provided on the outer side of the locking part 40. The operation auxiliary part 42 is integrally formed with the locking part 40 or is adhesively fixed. The operation auxiliary part 42 can be configured as a protrusion, groove or rubber strip on the outer side of the locking part 40 to provide friction for the operator when rotating the locking part 40.

[0066] In this embodiment, the method of using the above-mentioned occluder delivery device is as follows:

[0067] In the initial natural state, the positioning spring 34 provided in the handle portion 20 provides an axial thrust to the push rod portion 30, so that the distal end of the storage sheath 11 connected to the push rod portion 30 can wrap the clamping claw 13, and the clamping claw 13 cannot be opened. At the same time, the distal edge of the locking portion 40 is aligned with the "LOCK" mark line on the handle portion 20, as shown in FIG. Figure 7 , Figure 8 , the push rod portion 30 cannot move forward and backward, and the clamping jaw 13 is in a locked state;

[0068] The operator manually rotates the locking portion 40 so that the distal edge thereof is aligned with the “UNLOCK” marking line on the handle portion 20. Fig. 9 , Fig.10 At this time, the push rod part 30 is manually slid toward the proximal end, so that the storage sheath 11 moves and the clamping claw 13 is exposed. The clamping claw 13 automatically opens in an "eight" shape. After the clamping claw 13 is engaged with the ball head 51 of the occluder 50, the push rod part 30 is released. Under the action of the positioning spring 34, the push rod part 30 drives the storage sheath 11 to move toward the distal end. The distal sleeve 111 wraps the clamping claw 13 that engages the ball head 51. The operator manually rotates the locking part 40 in the opposite direction until the distal edge of the locking part 40 is aligned with the "LOCK" mark line on the handle part 20. The push rod part 30 cannot move forward and backward, thereby locking the clamping claw 13 and the ball head 51;

[0069] The occluder delivery device together with the occluder 50 is delivered to the target position in the body along the sheath tube, and the release angle of the occluder 50 is appropriately adjusted as needed. When the occluder 50 needs to be released subjectively, the operator needs to manually rotate the locking portion 40 to align the distal edge of the locking portion 40 with the "UNLOCK" mark line on the handle portion 20, and then manually slide the push rod portion 30 proximally to move the receiving sheath 11 and expose the clamping jaws 13, which automatically open and release the ball head 51 to complete the release operation of the occluder 50;

[0070] Release the push rod portion 30 again, and rotate the locking portion 40 in the opposite direction until the distal edge of the locking portion 40 is aligned with the "LOCK" marking line on the handle portion 20, and move the occluder delivery device out of the body along the sheath, thus completing the implantation process of the occluder 50.

[0071] Example 2

[0072] refer to Figure 1 — Fig.11 This embodiment 2 provides an occluder delivery system, including the occluder delivery device and the occluder 50 described in the above embodiment 1. The technical features already recorded in the above embodiment 1 are naturally inherited in this embodiment and will not be repeated.

[0073] In some embodiments, the proximal end of the occluder 50 in this embodiment is provided with a delivery connector, which is releasably connected to the clamp 13 of the occluder delivery device; in some further embodiments, the delivery connector is configured as a non-threaded ball head 51.

[0074] In this embodiment, the specific operation method of the occluder delivery system is the same as that of the above-mentioned embodiment 1, and will not be repeated here.

[0075] The embodiments of the utility model are described above in conjunction with the accompanying drawings, but the utility model is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the enlightenment of the utility model, ordinary technicians in this field can also make many forms without departing from the scope of protection of the utility model and the claims, all of which are within the protection of the utility model.

Claims

1. An occluder delivery device, characterized in that: It includes a conveying part, a handle part and a push rod part; The delivery portion includes a storage sheath and a delivery cable and a clamping claw disposed therein, the storage sheath can move axially relative to the delivery cable, the proximal end of the delivery cable is connected to the handle portion, the distal end of the delivery cable is connected to the clamping claw, the clamping claw is used to clamp the delivery connection piece of the occluder, and the clamping claw can release the delivery connection piece after being exposed from the distal end of the storage sheath; The push rod portion is axially movably arranged on the handle portion, the push rod portion is connected to the proximal end of the receiving sheath, and the push rod portion can drive the receiving sheath to move axially to receive or expose the clamping claw.

2. The occluder delivery device according to claim 1, characterized in that: The handle portion includes: - a handle window, which is opened along the axial direction of the handle portion and allows the push rod portion to slide therein; - A handle rail groove, axially arranged below the handle window, and slidingly matched with the push rod portion, so that the push rod portion can move axially along the handle rail groove.

3. The occluder delivery device according to claim 2, characterized in that: The length of the handle rail groove is not less than the length of the clamping claw.

4. The occluder delivery device according to claim 2, characterized in that: The push rod portion is provided with grooves, and the grooves are slidably arranged in the handle rail groove.

5. The occluder delivery device according to claim 1, characterized in that: A steel cable connector is provided inside the proximal end of the handle portion, and the steel cable connector is connected to the proximal end of the delivery steel cable.

6. The occluder delivery device according to claim 5, characterized in that: The distal end of the push rod portion is connected to the proximal end of the storage sheath, a positioning spring is provided between the proximal end of the push rod portion and the steel cable connector, and two ends of the positioning spring are respectively abutted against the proximal end of the push rod portion and the steel cable connector.

7. The occluder delivery device according to claim 2, characterized in that: It also includes a locking portion, which is annularly sleeved on the outside of the handle portion, the locking portion is provided with an internal thread, and the handle portion is provided with an external thread, and the two threads are matched; The external thread is arranged at the proximal end of the handle window. When the locking portion is rotated to the distal end of the external thread, the locking portion is used to axially limit the push rod portion. When the locking portion is rotated toward the proximal end of the external thread, the locking portion releases the axial limitation on the push rod portion.

8. The occluder delivery device according to claim 7, characterized in that: An operation auxiliary portion is also provided on the outer side of the locking portion, and the operation auxiliary portion is used to provide friction force for the operator when rotating the locking portion.

9. The occluder delivery device according to claim 1, characterized in that: A distal sleeve is provided at the distal end of the storage sheath, and the distal sleeve is used to accommodate the clamping claw and the delivery connecting piece.

10. The occluder delivery device according to claim 1, characterized in that: The clamping jaw is provided with a clamping groove, the contour of which matches the non-threaded conveying connection piece.

11. An occluder delivery system, characterized in that: It comprises the occluder delivery device as described in any one of claims 1 to 10, and also comprises an occluder.

12. The occluder delivery system according to claim 11, characterized in that: The proximal end of the occluder is provided with a delivery connection piece, and the delivery connection piece is releasably connected to the occluder delivery device; The delivery connection is configured as a non-threaded ball head.

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