A cardiovascular interventional occlusion device delivery system

Abstract

The present application relates to the technical field of medical devices, in particular to a cardiovascular intervention occlusion device delivery system, comprising: an occlusion device body; a pushing device comprising a distal end mounting member, a pushing body and a proximal end wire clamping member connected in sequence, the occlusion device body being connected with the distal end mounting member, and a wire clamping portion being arranged on the proximal end wire clamping member; an auxiliary traction wire being knotted in a loop shape after being folded in half, the auxiliary traction wire comprising a folded distal end, a traction wire body and a proximal end knot, the folded distal end being connected with the occlusion device body in a sleeved manner, and the proximal end knot being connected with the wire clamping portion in a matched manner. By fixing the proximal end knot of the auxiliary traction wire by means of the proximal end wire clamping member of the occlusion device body, and connecting the folded distal end of the auxiliary traction wire with the occlusion device body in a matched manner, the traction wire body can be stably extended along the pushing body of the pushing device under the combined limiting action of the proximal end knot and the folded distal end, so as to ensure that the auxiliary traction wire will not be self-wound to cause a surgical risk when the occlusion device body is delivered in a blood vessel.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a cardiovascular intervention occlusion device delivery system. BACKGROUND

[0002] The cardiovascular intervention occlusion treatment is mainly used for congenital heart disease, mainly through percutaneous puncture of peripheral blood vessels, under the assistance of X-ray perspective guidance and echocardiography, a sheath tube is pushed to the corresponding position of a heart lesion, and then an occlusion device is pushed to the corresponding position of the heart lesion through a pushing device for occlusion treatment.

[0003] With the development of modern science and technology, the material of the occlusion device gradually changes from the traditional nickel-titanium alloy material to the degradable material. Since the elasticity of the degradable material is much weaker than that of the nickel-titanium alloy material, in order to facilitate the delivery of the occlusion device made of the degradable material, a forming locking device is used to deliver and release the occlusion device in the prior art. However, the traction line as an auxiliary forming device in the forming locking device is complex to assemble between the occlusion device and the locking device body during the operation process. During the delivery process, the traction line may be entangled with the locking device body, resulting in the risk that the traction line cannot be withdrawn. SUMMARY

[0004] Therefore, the technical problem to be solved by the present application is to overcome the defect that the traction line in the forming locking device for delivering the cardiovascular intervention occlusion device in the prior art has the risk of entanglement and cannot be withdrawn, so as to provide a cardiovascular intervention occlusion device delivery system.

[0005] In order to solve the above technical problems, the present application provides a cardiovascular intervention occlusion device delivery system, comprising:

[0006] an occlusion device body;

[0007] a pushing device comprising a distal end mounting member, a pushing body and a proximal end wire clamping member connected in sequence, the occlusion device body being connected with the distal end mounting member in cooperation, and the proximal end wire clamping member being provided with a wire clamping portion;

[0008] an auxiliary traction line, which is knotted in a ring shape after being folded in half, and comprises a folded distal end, a traction line body and a proximal end knot, the folded distal end being connected with the occlusion device body in a sleeved manner, and the proximal end knot being connected with the wire clamping portion in cooperation.

[0009] Optionally, the proximal end wire clamping member comprises a positioning rod and a positioning cap, the positioning rod being connected with the positioning cap in cooperation, and the wire clamping portion being a wire clamping groove reserved between the positioning rod and the positioning cap.

[0010] Optionally, the positioning rod and the positioning cap are connected in a snap-fit manner; or the positioning rod and the positioning cap are connected in a threaded manner.

[0011] Optionally, the proximal end clamping wire member comprises a clamping wire member body and a clamping wire portion provided on the clamping wire member body, the clamping wire portion being a clamping wire through hole, and the proximal end knot penetrates through the clamping wire through hole and is clamped and matched with the clamping wire through hole.

[0012] Optionally, the maximum outer diameter of the proximal end knot is not less than the inner diameter of the clamping wire through hole.

[0013] Optionally, the occluder body is provided with a locking member fixedly connected, and the folded distal end of the auxiliary traction line is connected through the locking member.

[0014] Optionally, the locking member is a locking ring or a locking hole or a locking hook.

[0015] Optionally, the occluder body is provided with a connecting column on the side facing the pushing device, and the connecting column is connected with the distal end mounting member.

[0016] Optionally, the connecting column is provided with an internal thread, the distal end mounting member is a cylindrical structure, the distal end mounting member is provided with an internal thread inside, and the connecting column is threadedly connected with the distal end mounting member; or, the connecting column is clamped and matched with the distal end mounting member.

[0017] Optionally, the distal end mounting member is provided with a mounting side hole on the side wall, and the folded distal end extends to the distal end mounting member inside and is connected with the occluder body through the mounting side hole.

[0018] The technical scheme of the present application has the following advantages:

[0019] 1. The cardiovascular intervention occluder delivery system provided by the present application comprises: an occluder body; a pushing device comprising a distal end mounting member, a pushing body and a proximal end clamping wire member connected in sequence, the occluder body being connected with the distal end mounting member, and the proximal end clamping wire member being provided with a clamping wire portion; an auxiliary traction line, which is folded and knotted in a ring shape, the auxiliary traction line comprising a folded distal end, a traction line body and a proximal end knot, the folded distal end being sleeved with the occluder body, and the proximal end knot being connected with the clamping wire portion.

[0020] By fixing the proximal end knot of the auxiliary traction line by using the proximal end clamping wire member of the occluder body, the folded distal end of the auxiliary traction line is connected with the occluder body, so that the traction line body can be stably extended along the pushing body of the pushing device under the combined limiting action of the proximal end knot and the folded distal end, and it is ensured that the auxiliary traction line will not be self-wound to cause surgical risk when the occluder body is delivered in the blood vessel.

[0021] 2. The cardiovascular intervention occluder delivery system provided by the present application, the proximal end wire clamping part comprises a positioning rod and a positioning cap, the positioning rod is connected with the positioning cap, and a wire clamping groove is reserved between the positioning rod and the positioning cap. During installation, first, the positioning cap is removed, then the proximal end knot of the auxiliary traction line is sleeved on the positioning rod, then the positioning cap is installed, the proximal end knot of the auxiliary traction line is clamped and installed in the wire clamping groove by the cooperation of the positioning rod and the positioning cap, and the auxiliary line body is taut under the action of the proximal end knot and the folded distal end, so that winding occurs in the delivery process.

[0022] 3. The cardiovascular intervention occluder delivery system provided by the present application, the proximal end wire clamping part comprises a positioning rod and a positioning cap, the positioning rod is connected with the positioning cap, and a wire clamping groove is reserved between the positioning rod and the positioning cap. During installation, first, the positioning cap is removed, then the proximal end knot of the auxiliary traction line is sleeved on the positioning rod, then the positioning cap is installed, the proximal end knot of the auxiliary traction line is clamped and installed in the wire clamping groove by the cooperation of the positioning rod and the positioning cap, and the auxiliary line body is taut under the action of the proximal end knot and the folded distal end, so that winding occurs in the delivery process. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the following specific embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0024] Figure 1 The structure schematic diagram of the cardiovascular intervention occluder delivery system provided in the embodiments of the present application.

[0025] Figure 2 The structure schematic diagram of the occluder body and the auxiliary traction line provided in the embodiments of the present application.

[0026] Figure 3 The structure schematic diagram of the auxiliary traction line provided in the embodiments of the present application.

[0027] Figure 4 The structure schematic diagram of the push device provided in the embodiments of the present application.

[0028] Figure 5 The structure schematic diagram of the distal end mounting part provided in the embodiments of the present application.

[0029] Figure 6 The internal structure schematic diagram of the distal end mounting part provided in the embodiments of the present application.

[0030] Figure 7 Structure diagram of the proximal wire clamping part provided in the embodiment of the present application.

[0031] Figure 8 Structure diagram of the auxiliary traction line cooperating with the proximal wire clamping part provided in the embodiment of the present application.

[0032] Figure 9 Structure diagram of the pusher, the auxiliary traction line and the loader tube provided in the embodiment of the present application.

[0033] Figure 10 Structure diagram of the proximal wire clamping part provided in another embodiment of the present application.

[0034] Figure 11 Structure diagram of the pusher, the auxiliary traction line and the loader tube provided in another embodiment of the present application.

[0035] Legend: 100, occluder body; 110, connecting column; 120, locking ring; 200, pusher; 210, distal mounting part; 211, mounting side hole; 212, internal thread; 220, pusher body; 230, proximal wire clamping part; 231, positioning rod; 232, positioning cap; 233, wire clamping groove; 234, wire clamping part body; 235, wire clamping through hole; 300, auxiliary traction line; 310, traction line body; 320, folded distal end; 330, proximal knot; 400, loader tube; 500, operation handle. DETAILED DESCRIPTION

[0036] The technical solutions of the present application will be described clearly and completely below in combination with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0037] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms “center”, “upper”, “lower”, “left”, “right”, “vertical”, “horizontal”, “inner”, “outer” and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms “first”, “second”, “third” are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0038] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "linking" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0039] In addition, the technical features involved in the different embodiments of the application described below can be combined with each other as long as there is no conflict.

[0040] Embodiment

[0041] Figures 1 to 9 A cardiovascular interventional occluder delivery system provided in the embodiment is shown, which comprises an occluder body 100, a pushing device 200, an auxiliary traction line 300, a loader tube 400 and an operation handle 500. The operation handle 500 is mounted at the proximal end of the loader tube. During delivery, the occluder body, the pushing device 200 and the auxiliary traction line 300 are collectively equipped into the loader tube. The auxiliary traction line 300 is connected at one end with the occluder body 100, then extends along the pushing device 200, is partially connected with the pushing device 200, and the tail part is connected with the operation handle 500.

[0042] The pushing device 200 comprises a distal mounting member 210, a pushing body 220 and a proximal line clamping member 230 connected in sequence. The occluder body 100 is connected with the distal mounting member 210 in a matching manner. The proximal line clamping member 230 is provided with a line clamping part. The auxiliary traction line 300 is folded and knotted in a loop shape. The auxiliary traction line 300 comprises a folded distal end 320, a traction line body 310 and a proximal knot 330. The folded distal end 320 is sleeved and connected with the occluder body 100. The proximal knot 330 is connected with the line clamping part in a matching manner.

[0043] In the embodiment, the proximal line clamping member 230 comprises a positioning rod 231 and a positioning cap 232. The positioning rod 231 is connected with the positioning cap 232 in a matching manner. The line clamping part is a line clamping groove 233 reserved between the positioning rod 231 and the positioning cap 232. The positioning rod 231 and the positioning cap 232 are connected in a threaded matching manner. In some other embodiments, the positioning rod 231 and the positioning cap 232 can also be connected in a clamping groove buckle structure.

[0044] A locking element is fixedly connected to the occluder body 100, and the folded distal end 320 of the auxiliary traction line 300 is threaded through and connected to the locking element. The locking element is a locking ring 120, a locking hole, or a locking hook. In this embodiment, a locking ring 120 is selected to facilitate the locking element's insertion into the distal mounting member 210 of the pushing device 200. A connecting post 110 is provided on the side of the occluder body 100 facing the pushing device 200, and the locking ring 120 is fixedly connected to the end of the connecting post 110. The connecting post 110 is connected to the distal mounting member 210. Specifically, the connecting post 110 is provided with an internal thread 212, and the distal mounting member 210 has a cylindrical structure with an internal thread 212 inside. The connecting post 110 and the distal mounting member 210 are threadedly engaged. In some other embodiments, the connecting post 110 and the distal mounting member 210 can also be engaged by a snap-fit ​​and slot structure.

[0045] To facilitate the auxiliary traction line 300 entering the inner cavity of the distal mounting component 210 and connecting with the locking ring 120, the side wall of the distal mounting component 210 is provided with a mounting side hole 211. The folded distal end 320 extends from the mounting side hole 211 into the distal mounting component 210 and connects with the plugger body 100.

[0046] In the cardiovascular interventional occluder delivery system provided in this embodiment, the proximal knot 330 of the auxiliary traction wire 300 is a certain distance L from the fixed end of the operating handle 500. Distance L is the cut-off position, which facilitates the doctor to remove the auxiliary traction wire 300 from the operating handle while ensuring that the auxiliary traction wire 300 is not loosened. On the distal mounting part 210 of the pushing device 200, the auxiliary traction wire 300 passes through the opening at the top of the distal mounting part 210, exits from the mounting side hole 211, and continues until the distal end 320 is folded and reaches the opening. The distal mounting part 210 is then fixed to the connecting post 110 on the occluder body 100 by threads.

[0047] When assembling the cardiovascular interventional occluder delivery system, loosening the positioning cap 232 on the pusher 200 will widen the wire-clamping groove 233. At this point, the proximal knot 330 of the auxiliary traction wire 300 is inserted into the wire-clamping groove 233, and then the positioning cap 232 is tightened to secure the proximal knot 330 of the auxiliary traction wire 300. Then, the proximal end of the pusher 200, with the auxiliary traction wire 300 secured, is inserted into the loader tube 400 from the distal end and exits from the proximal end, ensuring that the auxiliary traction wire 300 passes through the tube. This simplifies the assembly process. Furthermore, this process allows for the untangling of the auxiliary traction wire 300 before insertion into the loader tube 400, preventing tangling and avoiding surgical risks.

[0048] As an alternative implementation method, such as Figure 10 andFigure 11 As shown, the proximal end clamping wire part 230 includes a clamping wire part body 234 and a clamping wire hole 235 provided on the clamping wire part. The proximal end knot 330 penetrates the clamping wire hole 235 and is clamped and matched with the clamping wire hole 235. The maximum outer diameter of the proximal end knot 330 is not less than the inner diameter of the clamping wire hole 235. The proximal end knot 330 of the auxiliary traction line 300 is penetrated through the clamping wire hole 235. Since the proximal end knot 330 of the auxiliary traction line 300 can be deformed under the action of a certain force, it can be penetrated out of the clamping wire hole 235 and clamped on the clamping wire hole 235. In order to clearly show the structure of the clamping wire hole 235, Figure 9 and Figure 10 The clamping wire hole 235 is enlarged in the above. The proximal end of the pushing device 200 for fixing the auxiliary traction line 300 is penetrated into the distal end of the loader tube 400 and penetrated out of the proximal end. Thus, the auxiliary traction line 300 can be ensured to be penetrated through the tube. The assembly process of the doctor is facilitated. Meanwhile, the auxiliary traction line 300 can be combed after being wound before being loaded into the loader tube 400 and then penetrated into the loader tube 400. Thus, the auxiliary traction line 300 cannot be wound to cause a surgical risk.

[0049] Obviously, the above embodiments are only examples for clearly illustrating but not limiting the embodiments. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. All the embodiments do not need to be exhausted and cannot be exhausted. The obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A cardiovascular interventional occluder delivery system, characterized in that, The utility model relates to a kind of occluder and auxiliary traction line, including: Occluder body (100); Pushing device (200), including sequentially connected far end mounting member (210), pushing body (220) and near end wire clamping member (230), the occluder body (100) is connected with the far end mounting member (210), wire clamping part is provided on the near end wire clamping member (230); Auxiliary traction line (300), it is looped after knot after folding, the auxiliary traction line (300) includes folding far end (320), traction line body (310) and near end knot (330), the folding far end (320) is connected with the occluder body (100), and the near end knot (330) is connected with the wire clamping part; The near end wire clamping member (230) includes positioning rod (231) and positioning cap (232), the positioning rod (231) is connected with the positioning cap (232), and the wire clamping part is the wire clamping groove (233) reserved between the positioning rod (231) and the positioning cap (232); Or, the near end wire clamping member (230) includes wire clamping member body (234) and wire clamping part on the wire clamping member body (234), and the wire clamping part is wire clamping through-hole (235), and the near end knot (330) is connected with the wire clamping through-hole (235) after being penetrated through the wire clamping through-hole (235).

2. The cardiovascular interventional occluder delivery system according to claim 1, characterized in that, The positioning rod (231) is connected with the positioning cap (232);Or, the positioning rod (231) is connected with the positioning cap (232) by thread.

3. The cardiovascular interventional occlusion device delivery system of claim 1, wherein, The maximum outer diameter of the near end knot (330) is not less than the inner diameter of the wire clamping through-hole (235).

4. The cardiovascular interventional occluder delivery system according to any one of claims 1 to 3, characterized in that, The occluder body (100) is provided with locking member, and the folding far end (320) of the auxiliary traction line (300) is connected with the locking member.

5. The cardiovascular interventional occlusion device delivery system of claim 4, wherein, The locking member is locking ring (120) or locking hole or locking hook.

6. The cardiovascular interventional occluder delivery system according to any one of claims 1 to 3, characterized in that, The occluder body (100) is provided with connecting column (110) on the side towards the pushing device (200), and the connecting column (110) is connected with the far end mounting member (210).

7. The cardiovascular interventional occlusion device delivery system of claim 6, wherein, The connecting column (110) is provided with external thread, the far end mounting member (210) is cylindrical structure, the far end mounting member (210) is provided with internal thread (212) in, and the connecting column (110) is connected with the far end mounting member (210) by thread;Or, the connecting column (110) is connected with the far end mounting member (210) by clamping.

8. The cardiovascular interventional occlusion device delivery system of claim 7, wherein, The far end mounting member (210) side wall is provided with installation side hole (211), and the folding far end (320) is connected with the occluder body (100) in the far end mounting member (210) from the installation side hole (211).

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