Integrated conveying device and embolism system

Abstract

The invention relates to an integrated conveying device which comprises an integrally-formed pushing part, a conveying part and a conveying part. The pushing piece comprises an assembling section, a conveying section and a fixing section which are sequentially arranged from the direction of the far end to the direction of the near end; the assembling section comprises a first notch communicated with the pushing cavity and a first positioning hole communicated with the first notch; the first notch is located between the pushing cavity and the first positioning hole; one end of the limiting release wire sequentially penetrates through the pushing cavity and the first notch into the first positioning hole, and the other end of the limiting release wire is fixedly connected with the fixed section; wherein the joint of the fixing section and the conveying section is broken, the fixing section is driven to drive the limiting release wire to move towards the near end, and when the end, located in the first positioning hole, of the limiting release wire sequentially passes through the limiting hole and the first notch, releasing of the implant is achieved. The invention also relates to an embolism system.

Description

Technical Field

[0001] The present invention relates to the technical field of aneurysm embolization, and in particular to an integrated delivery device and embolization system. Background Art

[0002] Aneurysms are a common vascular disease, typically forming an abnormally bulging structure due to localized weakness or damage in the arterial wall. The dangers of aneurysms primarily stem from the potential risk of rupture. Once ruptured, aneurysms can cause acute massive bleeding, a sudden increase in intracranial pressure, and even stroke, coma, or sudden death, seriously threatening the patient's life. Intracranial aneurysms, in particular, have extremely high rates of disability and mortality.

[0003] Currently, aneurysm treatments are primarily categorized into craniotomy and endovascular interventional therapy. Of these, endovascular embolization has become the preferred clinical option due to its minimally invasive nature, rapid recovery, and minimal complications. This method precisely delivers an embolization device into the aneurysm cavity via a catheter system. The device's physical filling action blocks blood flow, promoting thrombosis within the aneurysm cavity, thereby stabilizing the aneurysm wall and preventing rupture. This technique not only reduces the trauma of traditional craniotomy but also significantly improves the safety and reliability of treatment.

[0004] However, existing interventional devices for aneurysm embolization generally suffer from limitations such as complex structures and cumbersome operation. For example, some devices rely on multiple components working together or precise release mechanisms, which not only increase the difficulty of intraoperative operation but also may lead to risks such as inaccurate positioning and release failure due to structural redundancy, thus compromising treatment effectiveness. Summary of the Invention

[0005] In order to solve or at least partially solve the above technical problems, the present invention provides an integrated delivery device and embolization system.

[0006] The present invention provides an integrated conveying device, which includes an integrally formed pushing member and a limiting release wire, the pushing member having a pushing cavity; the pushing member includes an assembly section, a conveying section and a fixing section arranged in sequence from the distal end to the proximal end; the assembly section includes a first notch connected to the pushing cavity and a first positioning hole connected to the first notch; the first notch is located between the pushing cavity and the first positioning hole; one end of the limiting release wire is sequentially passed through the pushing cavity and the first notch to the first positioning hole, and the other end of the limiting release wire is fixedly connected to the fixing section; wherein, the limiting portion of the implant is arranged in the first notch, one end of the limiting release wire is sequentially passed through the pushing cavity, the first notch, and the limiting hole of the limiting portion to the first positioning hole to realize the assembly of the implant; the connection between the fixing section and the conveying section is broken, and the fixing section is driven to drive the limiting release wire to move toward the proximal end, and when the end of the limiting release wire located in the first positioning hole passes through the limiting hole and the first notch in sequence to realize the release of the implant.

[0007] Optionally, the pushing member has a tubular structure; a first notch is cut and formed on the assembly section in a direction perpendicular to the axis of the pushing member, the first notch is arranged close to the conveying section, the part of the assembly section close to the far end is the first convex portion, and the space within the first convex portion is the first positioning hole.

[0008] Optionally, a first incision is cut on the conveying section in a direction perpendicular to the axis of the pushing member, and the first incision is connected to the pushing cavity; a second convex portion with a second positioning hole is formed between the first incision and the first notch; the length of the first incision is longer than the length of the first notch.

[0009] Optionally, a second cut is formed on the fixed section along a direction perpendicular to the axis of the pushing member, and the second cut is communicated with the pushing cavity; the length of the second cut is longer than that of the first cut.

[0010] Optionally, at least one breaking opening is provided at the connection between the fixed section and the conveying section; when there is one breaking opening, the cross-sectional area of ​​the breaking opening is 1 / 4 to 3 / 4 of the cross-sectional area of ​​the pushing member; when there are multiple breaking openings, the multiple breaking openings are evenly distributed around the axis of the pushing member.

[0011] Optionally, the pushing member is formed by winding a braided wire; the pushing member has a first notch, a first incision, and a second incision; the first notch is located on the assembly section and is arranged close to the conveying section, the part of the assembly section close to the distal end is the first convex portion, and the space within the first convex portion is the first positioning hole; the first incision is located in the middle position of the conveying section, and a second convex portion with a second positioning hole is formed between the first incision and the first notch; the length of the first incision is longer than the length of the first notch; the second incision is located on the fixed section, and the length of the second incision is longer than the length of the first notch.

[0012] Optionally, the integrated conveying device further includes a developing member, which is sleeved on the first convex portion, or is disposed in the first positioning hole.

[0013] The present invention provides an embolization system, which includes an implant and an integrated delivery device as described in any one of the above items, wherein the implant includes a limiting portion with a limiting hole and a second notch; wherein the limiting portion of the implant is arranged in the first notch and the part of the assembly section close to the distal end is arranged in the second notch, and one end of the limiting release wire is sequentially passed through the pushing cavity, the first notch, the limiting hole, the second notch to the first positioning hole to realize the assembly of the implant; the connection between the fixed section and the delivery section is broken, and the fixed section is driven to drive the limiting release wire to move toward the proximal end, and when the end of the limiting release wire is located in the first positioning hole, it passes through the second notch, the limiting hole, and the first notch in sequence to realize the release of the implant.

[0014] Optionally, the implant includes a limiting member and an embolic spring, the limiting member includes a limiting portion and a fixing portion having a fixing hole, a second notch is formed between the limiting portion and the fixing portion; one end of the embolic spring is disposed in the fixing hole.

[0015] Optionally, the fixing part has at least one assembly hole; when the number of the assembly hole is one, one end of the embolic spring is passed through the assembly hole to the outside of the fixing hole, and the fixing part is wound around; when the number of the assembly holes is multiple, one end of the embolic spring is passed through an assembly hole to the outside of the fixing hole, and after the fixing part is wound around, another assembly hole is passed through the fixing hole to the inside of the fixing hole.

[0016] Optionally, the fixing portion has multiple groups of assembly holes, which are arranged in sequence and at intervals along the axis of the fixing portion; each group of assembly holes includes multiple assembly holes, and the multiple assembly holes are evenly distributed around the axis of the fixing portion.

[0017] Optionally, the middle portion of the fixing portion is squeezed to form a pressing portion; the inner diameter of the pressing portion is smaller than the inner diameter of the fixing hole.

[0018] Optionally, the implant is formed by winding an embolic wire; from the distal end to the proximal end, the embolic wire is wound into an embolic spring, a second notch and a limiting portion in sequence, and the space within the limiting portion is a limiting hole.

[0019] Compared with the prior art, the technical solution of this embodiment adopts a simplified and integrated design concept, which not only simplifies the number of parts and components and avoids the need to set up multiple hooks for assembly with the implant. It also simplifies the structure of the conveying device. Only a simple cutting of the pipe is required to obtain an integrated push piece. This not only reduces the processing difficulty and manufacturing cost, but also reduces the loss of consumables. The integrated conveying device only needs to set a first notch on its assembly section to achieve clamping and fixation with the implant. There is no need to consider the friction between the implant and the hook, and it can also meet the needs of implant delivery. Unlike the prior art, the integrated conveying device avoids welding between parts, improves structural strength, and ensures safety during implant delivery. The implant is assembled, fixed and released by the cooperation of the limit release wire and the push piece, which ensures the passability of the integrated conveying device in tortuous blood vessels. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] To more clearly illustrate the embodiments of the present invention, the following briefly describes the relevant drawings. It should be understood that the drawings described below are only used to illustrate some embodiments of the present invention, and those skilled in the art can also obtain many other technical features and connection relationships not described herein based on these drawings.

[0021] Figure 1 This is a cross-sectional view of an embodiment of an integrated conveying device of the present invention. Figure 1 ; Figure 2 This is a partial cross-sectional view of an embodiment of a pusher of an integrated conveying device of the present invention. Figure 1 ; Figure 3 This is a cross-sectional view of an embodiment of an integrated conveying device of the present invention. Figure 2 ; Figure 4 is a cross-sectional schematic diagram of an embodiment of an embolization system of the present invention; Figure 5 It is a cross-sectional schematic diagram of an embodiment of a pushing member of an integrated conveying device of the present invention; Figure 6 It is a schematic diagram of an embodiment of a limit release wire of an integrated conveying device of the present invention; Figure 7 This is a partial cross-sectional view of an embodiment of a pusher of an integrated conveying device of the present invention. Figure 2 ; Figure 8 This is a cross-sectional view of an embodiment of a pusher of an integrated conveying device of the present invention. Figure 1 ; Figure 9 This is a cross-sectional view of an embodiment of a pusher of an integrated conveying device of the present invention. Figure 2 ; Figure 10 This is a schematic diagram of an embodiment of an integrated conveying device of the present invention. Figure 1 ; Figure 11 is a schematic cross-sectional view of an embodiment of a braided wire of an integrated conveying device of the present invention; Figure 12 This is a schematic diagram of an embodiment of an implant of an embolization system of the present invention. Figure 1 ; Figure 13 is a cross-sectional schematic diagram of an embodiment of a stopper of an embolization system of the present invention; Figure 14 This is a cross-sectional view of an embodiment of an implant of an embolization system of the present invention. Figure 1 ; Figure 15 This is a cross-sectional view of an embodiment of an implant of an embolization system of the present invention. Figure 2 ; Figure 16 This is a schematic diagram of an embodiment of an implant of an embolization system of the present invention. Figure 2 .

[0022] Description of reference numerals: 1. Pushing member; 11. Pushing chamber; 12. Assembly section; 13. Conveying section; 14. Fixing section; 15. First notch; 16. First protrusion; 161. First positioning hole; 162. Developer tank; 17. First cutout; 18. Second protrusion; 181. Second positioning hole; 19. Second cutout; 21. Third protrusion; 211. Third positioning hole; 22. Breaking opening; 23. First connecting section; 24. Second connecting section ; 25. Third connecting section; 26. Crease; 31. Limiting release wire; 311. Flexible section; 32. Development piece; 4. Implant; 41. Limiting piece; 411. Second notch; 412. Fixing portion; 413. Fixing hole; 414. Limiting portion; 415. Limiting hole; 416. Assembly hole; 417. Limiting groove; 418. Pressing portion; 42. Embolic spring; 421. Reinforcement section; 422. Fourth connecting section. DETAILED DESCRIPTION

[0023] In order to be able to understand the features and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The accompanying drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the sake of convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0024] In the description and claims of the embodiments of the present disclosure, as well as in the accompanying drawings, the terms "first," "second," and the like are used to distinguish similar items and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate to describe the embodiments of the present disclosure herein. In addition, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions.

[0025] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to having a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0026] Furthermore, the terms "disposed," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean a fixed connection, a removable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediary, or an internal connection between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in the embodiments of this disclosure based on the specific circumstances.

[0027] Unless otherwise indicated, the term "plurality" means two or more and "plurality" means two or more.

[0028] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0029] In the present invention, the distal end refers to the end away from the operator during surgery, and the proximal end refers to the end close to the operator during surgery.

[0030] The inventors found that existing interventional devices used for aneurysm embolization have complex structures and cumbersome operations. Some of these devices rely on the coordinated work of multiple components or precise release mechanisms, which not only increases the difficulty of intraoperative operation, but also may lead to risks such as inaccurate positioning and release failure due to structural redundancy.

[0031] In view of this, the inventors of the present invention provide an integrated delivery device and embolization system to solve the above problems. Several specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0032] First embodiment The integrated conveying device mentioned in this embodiment is as follows: Figure 1As shown, the integrated conveying device includes a push member 1 and a limiting release wire 31. The push member 1 is made by cutting a pipe, so the push member 1 is an integrated molding structure, and the push member 1 is a tubular structure. The internal space of the push member 1 with a tubular structure can be regarded as the push cavity 11 of the push member 1. The push member 1 includes three parts, which are an assembly section 12, a conveying section 13 and a fixed section 14. The assembly section 12, the conveying section 13 and the fixed section 14 are arranged in sequence from the direction of the distal end to the direction of the proximal end. There is a first notch 15 on the assembly section 12. The first notch 15 is located at the end of the assembly section 12 close to the proximal end, and can also be regarded as the first notch 15 being located at the end of the assembly section 12 close to the conveying section 13. The rest of the assembly section 12 can be regarded as a first protrusion 16. The first protrusion 16 is located at the end of the assembly section 12 close to the distal end. The internal space of the first protrusion 16 can be regarded as a first positioning hole 161. First notch 15 is located between push chamber 11 and first positioning hole 161, and both push chamber 11 and first positioning hole 161 are connected to first notch 15. This can also be considered as push chamber 11 communicating with first positioning hole 161 via first notch 15. One end of limit release wire 31 passes through push chamber 11 and first notch 15, respectively, to first positioning hole 161. The other end of limit release wire 31 is fixedly connected to fixing section 14, thus completing the installation of the integrated conveying device.

[0033] Optionally, the pushing member 1 can be made of a polymer material. For example, the polymer material can be any one of PP, PI, POM, PSU, and PEEK. Of course, it can also be a mixture of any of the above materials.

[0034] Optionally, the pushing member 1 can be made of metal material, for example, the metal material can be made of stainless steel, nickel-titanium alloy, or platinum-iridium alloy.

[0035] In this embodiment, the integrated conveying device further includes a developing member 32. The configuration of the developing member 32 is as follows: Optional, such as Figure 1 As shown, the developing member 32 can be made of a developing material. In the present invention, the developing material can be any of platinum-iridium alloy, platinum-tungsten alloy, and tantalum alloy. The developing member 32 has an annular structure and is sleeved onto the first protrusion 16 of the pushing member 1. Specifically, a developing wire is passed through the first positioning hole 161 of the first protrusion 16. The developing wire is bent so that its ends are connected to form the annular developing member 32. This facilitates the operator to observe the position of the first protrusion 16 of the pushing member 1 during imaging.

[0036] Optional, such as Figure 2As shown, the difference from the above-mentioned technical solution lies in that the inner wall of the first positioning hole 161 of the first protrusion 16 is provided with a developing groove 162. The developing member 32 can be a developing spring, and the developing member 32 is disposed in the developing groove 162. Of course, the developing member 32 and the pushing member 1 can also be connected and fixed by welding. This facilitates the operator to observe the position of the first protrusion 16 of the pushing member 1 during imaging.

[0037] You can choose either of the two optional technical solutions above.

[0038] In this embodiment, an exemplary processing process of the integrated conveying device is as follows: like Figure 1 As shown, a first notch 15 is cut perpendicular to the axis of the pusher 1 on the assembly section 12. The remaining portion of the assembly section 12 forms a first protrusion 16, the interior space of which can be considered a first positioning hole 161. The first notch 15 is located at the end of the assembly section 12 near the conveying section 13, and the first protrusion 16 is located at the distal end of the assembly section 12. In this way, the pusher 1 can be fabricated by simply cutting a single piece of tubing. Subsequently, one end of the limit release wire 31 is sequentially passed through the pusher cavity 11, the first notch 15, and the first positioning hole 161. The other end of the limit release wire 31 is positioned within the pusher cavity 11 and bonded to the proximal end of the fixed section 14, or positioned outside the pusher cavity 11 and bonded to the outer wall of the fixed section 14. This completes the manufacturing of the integrated conveying device. Since the limit release wire 31 is fixedly connected to the pusher 1, it can also be considered as being integrally formed with the pusher 1.

[0039] In this embodiment, another exemplary processing of the integrated conveying device is as follows: like Figure 1 、 Figure 3 As shown, the difference from the above-described process lies in that after the first notch 15 is cut into the assembly section 12 of the pusher 1, the end of the fixed section 14 of the pusher 1 away from the conveying section 13 is cut to form a limit release wire 31. That is, the limit release wire 31 is integrally formed with the pusher 1. The end of the limit release wire 31 away from the pusher 1 is sequentially passed through the push cavity 11, the first notch 15, and the first positioning hole 161, thus completing the processing of the integrated conveying device.

[0040] An exemplary use process of the integrated conveying device disclosed in this embodiment: like Figure 1 、 Figure 3 、 Figure 4As shown, the implant 4 used in this embodiment is composed of a tail ring and a spring coil. The tail ring of the implant 4 can be regarded as the limiting portion 414 of the implant 4, and the ring hole of the tail ring can be regarded as the limiting hole 415 of the limiting portion 414. Before the limiting release wire 31 is set in the push member 1, the limiting portion 414 of the implant 4 is first set on one side of the assembly section 12 of the integrated delivery device, and then the limiting portion 414 is bent into the first notch 15. One end of the limiting release wire 31 passes through the push cavity 11 and enters the first notch 15. The other end of the limiting release wire 31 continues to pass through the limiting hole 415 of the limiting portion 414 to the first positioning hole 161. In this way, the assembly of the implant 4 is completed. When the implant 4 reaches the aneurysm, the connection between the fixing section 14 and the delivery section 13 is still outside the human body. Simply break the connection between the fixed segment 14 and the delivery segment 13. After separating the fixed segment 14 from the delivery segment 13, the fixed segment 14 is driven proximally, driving the limit release wire 31 proximally. When the limit release wire 31, located in the first positioning hole 161, passes through the limit hole 415 of the implant 4 and reaches the first notch 15, the implant 4 is released within the aneurysm without the restraint of the limit release wire 31.

[0041] Compared with the prior art, the technical solution of this embodiment adopts a simplified and integrated design concept, which not only simplifies the number of parts and components and avoids the need to set up multiple hooks for assembly with the implant. It also simplifies the structure of the conveying device. Only a simple cutting of the pipe is required to obtain an integrated push piece. This not only reduces the processing difficulty and manufacturing cost, but also reduces the loss of consumables. The integrated conveying device only needs to set a first notch on its assembly section to achieve clamping and fixation with the implant. There is no need to consider the friction between the implant and the hook, and it can also meet the needs of implant delivery. Unlike the prior art, the integrated conveying device avoids welding between parts, improves structural strength, and ensures safety during implant delivery. The implant is assembled, fixed and released by the cooperation of the limit release wire and the push piece, which ensures the passability of the integrated conveying device in tortuous blood vessels.

[0042] Second embodiment This embodiment also proposes an integrated conveying device. The second embodiment is a further improvement based on the first embodiment, and the main improvement lies in the structure of the pushing member 1. The specific solution is as follows: Optional, such as Figure 1 、 Figure 5As shown, a first cut 17 is cut in the conveying section 13 perpendicular to the axis of the pusher 1, forming the first cut 17. The first cut 17 is located in the middle of the conveying section 13 and is longer than the first notch 15. A second protrusion 18 is located between the first notch 17 and the first notch 15. The interior space of the second protrusion 18 can be considered a second positioning hole 181. The second positioning hole 181 is connected to the first notch 15, and the second positioning hole 181 and the pusher cavity 11 are also connected to the first notch 17. In this way, the pusher 1 can be manufactured by simply cutting a single tube and forming the first notch 15 and the first notch 17. One end of the limit release wire 31 passes through the pusher cavity 11, the first notch 17, the second positioning hole 181, the first notch 15, and finally into the first positioning hole 161. The other end of the limit release wire 31 is fixedly connected to the fixed section 14, thus completing the installation of the integrated conveying device. By providing the first incision on the conveying section of the pushing member, the flexibility of the pushing member can be further increased, making it more suitable for tortuous blood vessels.

[0043] Optional, such as Figure 1 、 Figure 5 As shown, a second cut 19 is cut on the fixed section 14 in a direction perpendicular to the axis of the push member 1. The second cut 19 is located in the middle of the fixed section 14 and is longer than the first notch 15. The portion of the fixed section 14 away from the conveying section 13 is the third protrusion 21, and the interior space of the third protrusion 21 can be considered as the third positioning hole 211. The third positioning hole 211 and the push chamber 11 are both connected to the second cut 19. In this way, the push member 1 can be made by simply cutting a pipe and making it have the first notch 15, the first notch 17, and the second notch 19. One end of the limit release wire 31 is passed through the second notch 19, the push chamber 11, the first notch 17, the second positioning hole 181, the first notch 15, and the first positioning hole 161 in sequence. The other end of the limit release wire 31 passes through the second notch 19 and into the third positioning hole 211. The other end of the limit release wire 31 is fixedly connected to the fixed section 14, thus completing the installation of the integrated conveying device. The second notch provided in the fixed section of the pusher facilitates the insertion and fixation of the limit release wire.

[0044] You can choose either of the two optional technical solutions above, and of course you can also combine the two optional technical solutions above.

[0045] In this embodiment, if Figure 1 、 Figure 5 、 Figure 6As shown, the position-limiting release wire 31 has been further improved. It includes a flexible segment 311 in a helical structure, and its outer diameter is smaller than the inner diameter of the delivery lumen 11. Optionally, the flexible segment 311 is positioned within the first incision 17, or within the delivery lumen 11, or within the second incision 19. By providing the position-limiting release wire with a helical flexible segment, the position-limiting release wire is not only more stably positioned within the delivery lumen due to the flexible segment, but also facilitates its application in tortuous blood vessels.

[0046] Third embodiment The inventors have discovered that since the pushing member 1 is made by cutting a pipe, it is not easy to separate the fixed section 14 from the conveying section 13 due to the structural strength of the pipe itself.

[0047] In view of this, this embodiment also proposes an integrated conveying device. The third embodiment is a further improvement based on the first or second embodiment. The main improvement is that a breaking opening 22 is provided at the connection between the fixed section 14 and the conveying section 13, as follows: Optional, such as Figure 1 、 Figure 7 、 Figure 8 As shown, the pushing member 1 has a breaking opening 22 , which is located at the connection between the fixing section 14 and the conveying section 13 . Figure 8 It is a cross-sectional view of the push member 1, from Figure 8 It can be observed that the cross-sectional area of ​​the break opening 22 accounts for 1 / 4 to 3 / 4 of the cross-sectional area of ​​the pusher 1. Preferably, the cross-sectional area of ​​the break opening 22 accounts for 1 / 2 of the cross-sectional area of ​​the pusher 1. By providing the break opening between the fixed section and the conveying section, the separation of the fixed section and the conveying section can be facilitated later.

[0048] Optional, such as Figure 9 As shown, the pusher 1 has multiple breakout openings 22, all located at the junction of the fixed section 14 and the conveying section 13. The breakout openings 22 are evenly spaced around the axis of the pusher 1. Providing the breakout openings between the fixed section and the conveying section facilitates subsequent separation of the fixed section from the conveying section.

[0049] You can choose any one of the two optional technical solutions mentioned above.

[0050] Fourth embodiment This embodiment also proposes an integrated conveying device. The differences between the fourth embodiment and any of the first to third embodiments are as follows: Optional, such as Figure 1 、 Figure 10As shown, the pusher 1 is formed by winding a braided wire. Optionally, the braided wire can be made of a developing material. Alternatively, the braided wire can be made of a metal material, for example, stainless steel or a nickel-titanium alloy. The braided wire is first wound sequentially around a fixed section 14 with a spiral structure and a conveying section 13 with a spiral structure. Then, a straight wire structure is maintained, which is the first connecting section 23. The first protrusion 16 with a spiral structure is then wound. The internal space of the fixed end and the conveying section 13 can be regarded as the pusher cavity 11, and the internal space of the first protrusion 16 can be regarded as the first positioning hole 161. The first connecting section 23 and the first protrusion 16 together constitute the assembly section 12. The space between the first protrusion 16 and the conveying section 13 can be regarded as the first notch 15. This completes the production of the pusher 1. One end of the limit release wire 31 is sequentially passed through the pusher cavity 11, the first notch 15, and the first positioning hole 161, while the other end of the limit release wire 31 is fixedly connected to the fixed section 14, thus completing the installation of the integrated conveying device. There is no need to cut the integrated delivery device, only the braided wire needs to be simply wound and shaped. Moreover, the fixed section, delivery section and first convex portion of the component all have a spiral structure. This arrangement can improve the flexibility of the integrated delivery device, making it more suitable for tortuous blood vessels.

[0051] Optional, such as Figure 10 As shown, the difference from the above technical solution is that the limit release wire 31 is integrally formed with the pushing member 1. Specifically, the braided wire includes two parts, one part of the braided wire is wound into the pushing member 1, and the other part of the braided wire can be regarded as the limit release wire 31. The end of the limit release wire 31 away from the pushing member 1 is passed through the pushing cavity 11, the first notch 15 to the first positioning hole 161 in sequence, and the processing of the integrated conveying device is completed. The structure of the integrated conveying device is simplified into a component, and the fixed section, conveying section and first convex portion of the component are all spiral structures. Such a setting can improve the flexibility of the integrated conveying device, making it more suitable for tortuous blood vessels.

[0052] Optional, such as Figure 1 、 Figure 10As shown, based on one of the two optional technical solutions mentioned above, the pusher 1 is further improved. The pusher 1 also has a first notch 17. The braided wire is first wound around the fixed section 14 with a spiral structure, and then the conveying section 13 is wound. When winding the conveying section 13, the proximal end of the conveying section 13 and the distal end of the conveying section 13 are both spiral structures, and the middle part of the conveying section 13 maintains a straight wire structure. This straight wire structure serves as the second connecting section 24, thus forming a first notch 17 in the middle of the conveying section 13. The length of the first notch 17 is longer than the length of the first notch 15. The internal spaces of the fixed section 14 and the proximal end of the conveying section 13 together constitute the push chamber 11. The distal end of the conveying section 13 is located between the first notch 15 and the first notch 17. The distal end of the conveying section 13 can be regarded as the second protrusion 18, and the internal space of the distal end of the conveying section 13 can be regarded as the second positioning hole 181. One end of the release wire 31 passes sequentially through the delivery cavity 11, the first incision 17, the second positioning hole 181, the first notch 15, and finally into the first positioning hole 161. The other end of the release wire 31 is fixedly connected to the fixing section 14, thus completing the installation of the integrated delivery device. This arrangement further improves the flexibility of the integrated delivery device, making it more suitable for use in tortuous blood vessels.

[0053] Optional, such as Figure 1 、 Figure 10 As shown, based on the above solution, the pusher 1 is further improved, further comprising a second notch 19. The braided wire is first wound around the fixed section 14. During the winding of the fixed section 14, both the proximal end and the distal end of the fixed section 14 form a spiral structure, and a straight wire structure is maintained in the middle of the fixed section 14. This straight wire structure serves as the third connecting section 25, thus forming a second notch 19 in the middle of the fixed section 14. The length of the second notch 19 is longer than the length of the first notch 15. The internal space of the distal end of the fixed section 14 and the proximal end of the conveying section 13 together form the pusher cavity 11. The proximal end of the fixed section 14 can be considered the third protrusion 21, and the internal space of the proximal end of the fixed section 14 can be considered the third positioning hole 211. One end of the limit release wire 31 passes through the second notch 19, the pusher cavity 11, the first notch 17, the second positioning hole 181, the first notch 15, and finally into the first positioning hole 161. The other end of the limit release wire 31 passes through the second notch 19 and into the third positioning hole 211. The other end of the limit release wire 31 is fixedly connected to the fixed section 14, thus completing the installation of the integrated conveying device. The second notch provided in the fixed section of the pusher facilitates the insertion and fixation of the limit release wire.

[0054] Optional, such as Figure 10 、 Figure 11As shown, based on the above solution, the pusher 1 is further improved in that the braided wire wound around the pusher 1 has a fold 26, which is located at the connection between the fixed section 14 and the conveying section 13. By providing the fold on the braided wire, the separation of the fixed section and the conveying section is facilitated at a later stage.

[0055] You can choose any one of the five optional technical solutions mentioned above.

[0056] Fifth embodiment An embolization system mentioned in this embodiment, such as Figure 12 、 Figure 13 As shown, the embolization system includes an integrated delivery device disclosed in any one of the first to fourth embodiments and an implant 4. The implant 4 includes a stopper 41 and an embolization spring 42. The stopper 41 has a second notch 411 in its center. The distal end of the stopper 41 is a fixing portion 412, which is tubular in structure. The interior space of the fixing portion 412 can be considered a fixing hole 413. The proximal end of the stopper 41 is a stopper 414, which has a stopper hole 415. The second notch 411 is located between the stopper 414 and the fixing portion 412, and both the stopper hole 415 and the fixing hole 413 are connected to the second notch 411. The distal end of the embolization spring 42 is rounded, while the proximal end of the embolization spring 42 is disposed within the fixing hole 413. The embolization spring 42 is connected to the fixing portion 412 of the implant 4. For example, the embolic spring 42 and the fixing portion 412 of the implant 4 may be connected by welding.

[0057] An exemplary use process of the embolization system disclosed in this embodiment: like Figure 1 、 Figure 4 、 Figure 12 、 Figure 13As shown, before the release wire 31 is installed in the pusher 1, the implant 4's retaining portion 414 is first installed on one side of the assembly section 12 of the integrated delivery device. The retaining portion 414 is then positioned within the first notch 15, with the first protrusion 16 positioned within the second notch 411. One end of the release wire 31 sequentially passes through the second incision 19, the delivery cavity 11, the first incision 17, the second positioning hole 181, the first notch 15, the retaining hole 415 of the retaining portion 414, and the second notch 411, ultimately reaching the first positioning hole 161. Of course, to further enhance the stability of the connection between the implant 4 and the integrated delivery device, one end of the release wire 31 can also continue to pass through the first positioning hole 161 and into the fixing hole 413. The other end of the release wire 31 passes through the second notch 19 and into the third positioning hole 211. The other end of the release wire 31 is then fixedly connected to the fixing section 14, thus completing the assembly of the embolization system. When implant 4 reaches the aneurysm, the connection between fixation segment 14 and delivery segment 13 is still outside the body. Simply break the connection between fixation segment 14 and delivery segment 13. After separation, fixation segment 14 is driven proximally, driving release wire 31 proximally. When the end of release wire 31 located in first positioning hole 161 passes through second notch 411, then through implant 4's retaining hole 415, and finally through first notch 15, implant 4 is released within the aneurysm without the restraint of release wire 31.

[0058] Compared to existing technologies, the technical solution of this embodiment utilizes the coordinated cooperation of a pusher and a limit release wire to secure and release the implant. Simply pulling the limit release wire proximally releases the implant. This embodiment not only simplifies and improves the delivery device, but also further optimizes and improves the implant structure. By simplifying the implant structure into two components: a limiter and an embolic spring, implant processing is facilitated.

[0059] Sixth embodiment This embodiment also proposes an embolization system. The sixth embodiment is a further improvement based on the fifth embodiment. The main improvement lies in the structure of the limiting member 41 of the implant 4, as follows: Optional, such as Figure 12 As shown, the fixing portion 412 has an assembly hole 416. Preferably, the assembly hole 416 is located at the end of the fixing portion 412 near the second notch 411. The end of the plug spring 42 disposed within the fixing hole 413 extends through the assembly hole 416 to the outside of the fixing hole 413. A reinforcing section 421 is spirally wound around the outer wall of the fixing portion 412. This arrangement enhances the structural strength between the stopper and the plug spring, reducing the risk of implant disintegration.

[0060] Optional, such as Figure 14 As shown, the fixing portion 412 has a plurality of assembly holes 416. Preferably, the plurality of assembly holes 416 are all located at one end of the fixing portion 412 near the second notch 411, and the plurality of assembly holes 416 are evenly distributed around the axis of the fixing portion 412. One end of the plug spring 42 disposed in the fixing hole 413 is penetrated with an assembly hole 416 extending to the outside of the fixing hole 413, and another assembly hole 416 is further penetrated to the inside of the fixing hole 413. Of course, it is also possible to continue to penetrate the fixing hole 413 and the third assembly hole 416 to the outside of the fixing hole 413, and to wind a reinforcing section 421 with a spiral structure along the outer wall of the fixing portion 412. Such a configuration not only facilitates the assembly between the limiter and the plug spring, but also further improves the structural strength between the limiter and the plug spring.

[0061] Optional, such as Figure 14 As shown, the fixing portion 412 has multiple groups of assembly holes 416, which are spaced apart along the axis of the fixing portion 412. Each group of assembly holes 416 includes multiple assembly holes 416, and within each group of assembly holes 416, the multiple assembly holes 416 are evenly distributed around the axis of the fixing portion 412. The assembly holes 416 can be arranged along the circumference of the fixing portion 412, or the axes of the assembly holes 416 can be arranged perpendicular to the axis of the fixing portion 412. Optionally, one end of the embolic spring 42 disposed within the fixing hole 413 is passed through an assembly hole 416 located near the proximal end to extend outside the fixing hole 413, and a reinforcing section 421 with a spiral structure is wound around the outer wall of the fixing portion 412. Finally, another assembly hole 416 located near the distal end is passed through the fixing hole 413. This arrangement not only facilitates assembly between the stopper and the embolic spring, but also further improves the structural strength between the stopper and the embolic spring.

[0062] Optional, such as Figure 13 、 Figure 14 As shown, based on any of the three optional technical solutions described above, a retaining groove 417 is formed on the outer wall of the fixing portion 412, and the reinforcement section 421 is located within the retaining groove 417. Of course, the retaining groove 417 can also be a spiral groove. By positioning the reinforcement section of the plug spring within the retaining groove of the retaining member, the reinforcement section can be stably positioned within the retaining groove, further enhancing the structural strength between the retaining member and the plug spring.

[0063] Optional, such as Figures 13 to 15As shown, the difference from the above technical solution is that after the proximal end of the embolic spring 42 is set in the fixing hole 413, the middle part of the fixing part 412 can be squeezed to form a pressing part 418. The inner diameter of the pressing part 418 is smaller than the inner diameter of the fixing hole 413. The pressing part 418 squeezes a part of the embolic spring 42, and the outer diameter of the squeezed part of the embolic spring is smaller than the outer diameter of the rest of the embolic spring. In this way, the fixing strength of the embolic spring and the limit member can be improved.

[0064] You can choose any one of the five optional technical solutions mentioned above.

[0065] Seventh embodiment This embodiment also proposes an embolization system. The difference between the seventh embodiment and the sixth embodiment lies in the structure of the implant 4, as follows: Optional, such as Figure 16 As shown, the implant 4 is formed by winding an embolic wire. Optionally, the embolic wire can be made of a metal material, for example, the metal material can be made of stainless steel or nickel-titanium alloy. Or the embolic wire can be made of a developing material. From the direction of the distal end to the direction of the proximal end, the embolic wire is first wound with an embolic spring 42 with a spiral structure, and the end of the embolic spring 42 close to the distal end is rounded. After that, a straight wire structure is maintained, which is the fourth connecting section 422. Then, a limiting portion 414 with a spiral structure is continued to be wound. The outer diameter of the limiting portion 414 is smaller than the inner diameter of the first positioning hole 161. The internal space of the limiting portion 414 can be regarded as a limiting hole 415, and the space between the limiting portion 414 and the embolic spring 42 can be regarded as a second notch 411. In this way, the production of the implant 4 is completed.

[0066] Optional, such as Figure 16 As shown, the difference from the above technical solution is that after the embolic wire is wound into the embolic spring 42, the embolic wire is further wound into a helical fixed portion 412. The outer diameter of the fixed portion 412 is larger than the outer diameter of the embolic spring 42, and the internal space of the fixed portion 412 can be regarded as a fixed hole 413. The outer diameter of the fixed portion 412 is the same as the outer diameter of the limiting portion 414.

[0067] Compared to existing technologies, this embodiment further simplifies the implant structure, eliminating the need for component machining, reducing both processing difficulty and manufacturing costs. The embolic wire only requires simple winding and shaping, and the implant's integrally molded structure further enhances its structural strength and reduces the risk of disintegration. The implant's embolic spring, fixing portion, and retaining portion all feature a helical structure. This design improves the implant's flexibility and enhances the embolic system's delivery capacity, making it more suitable for use within tortuous vessels and facilitating implant delivery to more distal locations within the vessel.

[0068] The above description and accompanying drawings sufficiently illustrate the embodiments of the present invention to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless expressly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present invention are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. An integrated conveying device, characterized in that: include: The push member is integrally formed and has a push cavity. The push member includes an assembly section, a conveying section, and a fixing section arranged in sequence from the distal end toward the proximal end. The assembly section includes a first notch communicating with the push cavity and a first positioning hole communicating with the first notch. The first notch is located between the push cavity and the first positioning hole. A limit release wire, one end of which passes through the push cavity, the first notch and the first positioning hole in sequence, and the other end is fixedly connected to the fixed section; Among them, the limiting part of the implant is arranged in the first notch, and one end of the limiting release wire passes through the pushing cavity, the first notch, the limiting hole of the limiting part to the first positioning hole in sequence to realize the assembly of the implant; the connection between the fixed section and the conveying section is broken, and the fixed section is driven to drive the limiting release wire to move toward the proximal end. When one end of the limiting release wire is located in the first positioning hole, it passes through the limiting hole and the first notch in sequence to realize the release of the implant.

2. The integrated conveying device according to claim 1, characterized in that: The pushing member has a tubular structure; a first notch is cut on the assembly section in a direction perpendicular to the axis of the pushing member, the first notch is arranged close to the conveying section, the part of the assembly section close to the far end is the first convex portion, and the space inside the first convex portion is the first positioning hole.

3. The integrated conveying device according to claim 2, characterized in that: A first incision is cut on the conveying section in a direction perpendicular to the axis of the pushing member, and the first incision is connected to the pushing cavity; a second convex portion with a second positioning hole is formed between the first incision and the first notch; the length of the first incision is longer than the length of the first notch.

4. The integrated conveying device according to claim 3, characterized in that: A second cut is formed on the fixed section along a direction perpendicular to the axis of the pushing member. The second cut is communicated with the pushing cavity. The length of the second cut is longer than that of the first cut.

5. The integrated conveying device according to any one of claims 2 to 4, characterized in that: At least one breaking opening is provided at the connection between the fixed section and the conveying section; When the number of the broken openings is one, the cross-sectional area of ​​the broken opening is 1 / 4 to 3 / 4 of the cross-sectional area of ​​the pushing member; When there are multiple breaking openings, the multiple breaking openings are evenly distributed around the axis of the pushing member.

6. The integrated conveying device according to claim 1, characterized in that: The pushing member is formed by winding a braided wire; The pushing member has a first notch, a first cut, and a second notch; the first notch is located on the assembly section and is arranged close to the conveying section, the part of the assembly section close to the far end is a first convex portion, and the space inside the first convex portion is a first positioning hole; the first notch is located in the middle position of the conveying section, and a second convex portion with a second positioning hole is formed between the first notch and the first notch; the length of the first notch is longer than the length of the first notch; the second notch is located on the fixed section, and the length of the second notch is longer than the length of the first notch.

7. The integrated conveying device according to claim 2 or 6, characterized in that: Also includes: The developing component is sleeved on the first convex portion or arranged in the first positioning hole.

8. An embolization system, characterized in that: include: The integrated conveying device according to any one of claims 1 to 7; The implant comprises a limiting portion having a limiting hole and a second notch; Among them, the limiting part of the implant is arranged in the first notch and the part of the assembly section close to the distal end is arranged in the second notch, and one end of the limiting release wire is sequentially passed through the pushing cavity, the first notch, the limiting hole, the second notch to the first positioning hole to realize the assembly of the implant; the connection between the fixed section and the conveying section is broken, and the fixed section is driven to drive the limiting release wire to move toward the proximal end. When the end of the limiting release wire is located in the first positioning hole, it passes through the second notch, the limiting hole, and the first notch in sequence to realize the release of the implant.

9. The embolization system according to claim 8, characterized in that Implants include: The limiting member includes a limiting portion and a fixing portion having a fixing hole, wherein a second notch is formed between the limiting portion and the fixing portion; One end of the plug spring is arranged in the fixing hole.

10. The embolization system according to claim 9, characterized in that The fixing portion has at least one assembly hole; When the number of the assembly hole is one, one end of the plug spring is passed through the assembly hole to the outside of the fixing hole, and the fixing portion is wound around; When there are multiple assembly holes, one end of the plug spring is passed through an assembly hole to the outside of the fixing hole, and another assembly hole is passed through the fixing hole after the fixing portion is wound.

11. The embolization system according to claim 9, characterized in that The fixing portion has a plurality of assembly holes, which are sequentially spaced along the axis of the fixing portion. Each group of assembly holes includes a plurality of assembly holes, and the plurality of assembly holes are evenly distributed around the axis of the fixing portion.

12. The embolization system according to claim 9, characterized in that The middle portion of the fixing portion is squeezed to form a pressing portion; the inner diameter of the pressing portion is smaller than the inner diameter of the fixing hole.

13. The embolization system according to claim 8, characterized in that The implant is formed by winding an embolic wire; from the distal end to the proximal end, the embolic wire is wound into an embolic spring, a second notch and a limiting portion in sequence, and the space inside the limiting portion is a limiting hole.

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