An embolization spring coil assembly

Abstract

This invention relates to the field of medical device technology and discloses an embolization coil assembly. The embolization coil assembly includes a coil and a release assembly. A connecting rod is connected to the proximal end of the coil, and a clamp is connected to the proximal end of the connecting rod. The release assembly includes a tube body and a release element. The release element includes at least two jaws arranged circumferentially along the tube body, with the proximal ends of all jaws interconnected. Through holes are formed on the jaws along the radial direction of the tube body. The release element has a clamped state inside the tube body and a released state outside the tube body. When the release element is in the clamped state, at least two jaws can clamp the connecting rod, and the clamp at least partially extends into the through hole. When the release element is in the released state, the distal ends of the jaws move away from each other to release the clamp and connecting rod. This invention achieves mechanical release of the coil, preventing displacement of the coil located within the aneurysm and avoiding incorrect release of the coil, thus ensuring treatment effectiveness and surgical safety.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to an embolization spring coil assembly. Background Technology

[0002] In current technology, aneurysms are generally treated by implanting coils for embolization. The main methods for coil release are electrical release, hydrolysis, and mechanical release.

[0003] Electrolytic release involves electrolysis breaking the connection between the coil and the guidewire, thus releasing the coil and leaving it within the aneurysm. The coil and guidewire are typically connected by welding, but uneven welding can lead to uncontrollable electrolytic release times, ranging from tens of seconds to several minutes. Prolonged release times can introduce additional risks to the procedure. Hydrolytic release involves injecting an aqueous solution into the delivery catheter to release the coil from the guidewire. This method suffers from poor stability and low controllability. Mechanical release involves pushing the coil into position using a push rod, then a mechanical structure engages a locking or limiting mechanism between the push rod and the coil to release it.

[0004] Most current mechanical detachment mechanisms consist of a delivery tube and a limiting wire. The delivery tube has an opening in its distal wall or a circular step inside its distal end. The coil has a spherical protrusion at its proximal end, located inside the distal end of the delivery tube. The limiting wire is located inside the delivery tube and extends beyond its distal end. When the limiting wire is removed, the spherical protrusion of the coil can be detached from the delivery tube. However, in practice, the coil has already reached the aneurysm before the limiting wire is removed. Furthermore, the spherical protrusion on the coil is subjected to force during removal, which may cause the coil to shift, affecting the treatment outcome. Moreover, even after the limiting wire is removed, although the protrusion of the coil has been detached, the coil remains within the delivery tube. There is still a certain probability of coil shifting during the removal of the delivery tube, introducing additional risks to the surgery and reducing its safety.

[0005] Therefore, there is an urgent need for a plug spring coil assembly to solve the problems mentioned above. Summary of the Invention

[0006] The purpose of this invention is to provide an embolization coil assembly to achieve mechanical release of the coil, and to ensure that the coil can be completely separated from the tube after release, preventing the coil located in the aneurysm from shifting, avoiding the coil from being released to the wrong position, ensuring the treatment effect, reducing surgical risks, and ensuring the safety of the operation.

[0007] To achieve this objective, the present invention adopts the following technical solution:

[0008] An embolization spring coil assembly, comprising:

[0009] A spring coil, with a connecting rod connected to its proximal end, and a clamp connected to the proximal end of the connecting rod;

[0010] A release assembly includes a tube body and a release member. The release member includes at least two grippers arranged circumferentially along the tube body. The proximal ends of all the grippers are connected to each other. Through holes are provided on the grippers radially along the tube body. The release member has a clamping state inside the tube body and a releasing state outside the tube body.

[0011] When the release element is configured in the clamping state, the distal ends of at least two of the jaws are close to each other and capable of clamping the connecting rod, the chuck is located between at least two of the jaws and at least partially extends into the through hole, and when the release element is configured in the releasing state, the distal ends of at least two of the jaws are far apart to release the chuck and the connecting rod.

[0012] As an optional technical solution for the embolization spring coil assembly, the release assembly further includes an operating lever, with the proximal ends of at least two of the grippers connected to the distal end of the operating lever. The operating lever is placed inside the tube and is movable relative to the tube along the axial direction of the tube to switch the release member between the clamping state and the release state.

[0013] As an alternative technical solution for the embolization spring coil assembly, the proximal end of the operating rod extends out of the tube body.

[0014] As an optional technical solution for an embolized spring coil assembly, the gripper includes an elastic segment and a clamping segment. The proximal ends of all the elastic segments are fixedly connected, and the distal ends of the elastic segments are connected to the clamping segment. The through hole is formed on the elastic segment. When the release member is configured in the released state, the distal ends of the elastic segments are far apart from each other and inclined away from the axis of the tube body. When the release member is configured in the clamping state, the distal ends of the elastic segments are close to each other, and the clamping segment can abut against the side wall of the connecting rod.

[0015] As an optional technical solution for the plug spring coil assembly, a groove is provided on the inner sidewall of the clamping section, the groove extending axially along the tube body and penetrating the distal end face of the clamping section and the wall of the through hole.

[0016] As an alternative technical solution for an embolization spring coil assembly, the gripper further includes a fixing section, the proximal end of the elastic section is connected to the fixing section, and all the fixing sections are interconnected.

[0017] As an optional technical solution for an embolized spring coil assembly, the clamps are provided in two parts, the fixing section is plate-shaped, and the two fixing sections are attached and connected.

[0018] As an optional technical solution for the embolization spring coil assembly, the embolization spring coil assembly further includes a push tube, which is coaxially sleeved outside the tube body, and the tube body and the push tube are arranged radially spaced apart.

[0019] As an optional technical solution for an embolized spring coil assembly, the clamp is cylindrical and coaxially connected to the connecting rod;

[0020] Alternatively, the clamp is spherical, with the center of the clamp located on the axis of the connecting rod.

[0021] As an optional technical solution for an embolization spring coil assembly, the tube body is made of metal or polymer material;

[0022] And / or, the release element is made of a metallic material.

[0023] The beneficial effects of this invention are:

[0024] The embolization spring coil assembly provided by this invention includes a spring coil and a release assembly. The release assembly includes a release member, which has at least two grippers whose distal ends can move closer or further apart. When the spring coil is being transported, the release member is in a clamped state within the tube, with the distal ends of the grippers approaching each other to clamp the connecting rod of the spring coil. The clamping head of the spring coil is located between the grippers, and at least a portion of the clamping head extends into a through-hole on the grippers. When the spring coil is being released, the release member is in a released state outside the tube, with the distal ends of the grippers moving further apart to release the clamping head and connecting rod, thereby disengaging the release member from the spring coil and achieving mechanical release of the spring coil. The embolization coil assembly provided by this invention enables mechanical release of the coil without relying on auxiliary structures such as fiber filaments. Furthermore, when the release element is in the released state, it is located outside the tube body, ensuring complete separation of the coil after release and preventing displacement. This guarantees the formation of intra-aneurysm embolization, ensures treatment effectiveness, and reduces surgical risks. Additionally, through-holes are provided in the clamps. During coil delivery, the release element is in a clamped state, with at least a portion of the clamp head extending into the through-hole. The edge of the through-hole stops the coil, preventing it from detaching from the release assembly during delivery. This avoids incorrect coil release, reduces the possibility of additional harm to the patient, lowers surgical risks, and ensures surgical safety. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the embolization spring coil assembly provided in an embodiment of the present invention;

[0026] Figure 2 This is a cross-sectional view of the plug spring coil assembly provided in the embodiment of the present invention when the release member is in the clamped state;

[0027] Figure 3 yes Figure 2 A magnified view of a section at point A in the middle;

[0028] Figure 4 This is a partial structural schematic diagram of the plug spring coil assembly provided in an embodiment of the present invention when the release member is in a clamped state;

[0029] Figure 5 This is a schematic diagram of the embolism spring coil assembly provided in the embodiment of the present invention when the release member is in the release state;

[0030] Figure 6 This is a schematic diagram of the gripper structure provided in an embodiment of the present invention;

[0031] Figure 7 This is a schematic diagram of the spherical chuck structure provided in an embodiment of the present invention.

[0032] In the picture:

[0033] 1. Spring coil; 2. Connecting rod; 3. Clamp; 4. Tube body;

[0034] 5. Release component; 51. Gripper; 511. Fixing section; 512. Elastic section; 513. Clamping section;

[0035] 6. Operating lever; 7. Through hole; 8. Groove. Detailed Implementation

[0036] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0040] This embodiment provides an embolization spring coil assembly. Specifically, as shown... Figures 1-7 As shown, the embolization spring coil assembly includes a spring coil 1 and a release assembly. A connecting rod 2 is connected to the proximal end of the spring coil 1, and a clamp 3 is connected to the proximal end of the connecting rod 2. The radial dimension of the clamp 3 along the connecting rod 2 is larger than the diameter of the connecting rod 2. The release assembly includes a tube body 4 and a release element 5. The release element 5 includes at least two jaws 51 arranged circumferentially along the tube body 4. The proximal ends of all jaws 51 are fixedly connected to each other. Through holes 7 are formed on the jaws 51 along the radial direction of the tube body 4. The release element 5 has a clamping state inside the tube body 4 and a releasing state outside the tube body 4. When the release element 5 is configured in the clamping state, the distal ends of the at least two jaws 51 approach each other and can clamp the connecting rod 2. The clamp 3 is located between the at least two jaws 51 and at least partially extends into the through hole 7. When the release element 5 is configured in the releasing state, the distal ends of the at least two jaws 51 move away from each other to release the clamp 3 and the connecting rod 2.

[0041] The embolized spring coil assembly provided in this embodiment includes a spring coil 1 and a release assembly. The release assembly includes a release member 5, which has at least two grippers 51 whose distal ends can move closer or further apart. When the spring coil 1 is being transported, the release member 5 is in a clamped state within the tube body 4, with the distal ends of the grippers 51 moving closer together to clamp the connecting rod 2 of the spring coil 1. The clamping head 3 of the spring coil 1 is located between the grippers 51, and at least a portion of the clamping head 3 extends into the through hole 7 on the gripper 51. When the spring coil 1 is being released, the release member 5 is in a released state outside the tube body 4, with the distal ends of the grippers 51 moving further apart to release the clamping head 3 and the connecting rod 2, thereby disengaging the release member 5 from the spring coil 1 and achieving mechanical release of the spring coil 1. The embolization coil assembly provided in this embodiment can achieve mechanical release of the coil 1, and avoids the need for auxiliary structures such as fiber filaments to assist in mechanical release. At the same time, when the release member 5 is in the released state, the release member 5 is located outside the tube body 4, ensuring that the coil 1 can be completely separated from the tube body 4 after release, preventing the coil 1 from shifting, ensuring the formation of intra-aneurysm embolization, ensuring the treatment effect, and reducing surgical risks. In addition, a through hole 7 is opened on the clamp 51. When the coil 1 is transported, the release member 5 is in the clamped state, and the clamp 3 extends at least partially into the through hole 7 on the clamp 51. The edge of the through hole 7 can stop the coil 1, preventing the coil 1 from detaching from the release assembly during transport, avoiding the coil 1 being released to the wrong position, reducing the possibility of additional harm to the patient, reducing surgical risks, and ensuring the safety of the operation.

[0042] It should be noted that in this embodiment, "proximal end" and "distal end" are relative to the operator. When the operator holds the plug spring coil assembly, the end closer to the operator is the proximal end, and the end farther from the operator is the distal end. Figure 1 Taking the direction in the middle as an example, the left side is the proximal end of the embolization spring coil assembly, and the right side is the distal end of the embolization spring coil assembly.

[0043] In this embodiment, the tube body 4 is characterized by being a metal or polymer material, which may be one of PEEK, PA, HDPE, PTFE, 304 stainless steel, 316 stainless steel, nickel-titanium alloy, platinum-tungsten alloy, or platinum-iridium alloy. The composition of the above materials is prior art and will not be described further here.

[0044] Preferably, the embolization coil assembly further includes a push tube, which is coaxially sleeved outside the tube body 4, and the tube body 4 and the push tube are radially spaced apart. Before the embolization coil assembly enters the patient's body, a guidewire can be inserted into the patient's body, and then the guidewire can be passed through the gap between the tube body 4 and the push tube. This allows for accurate movement along the guidewire to the aneurysm location, ensuring treatment effectiveness. It also allows the tube body 4 and the push tube to move relative to each other axially, enabling the spring coil 1 to be pushed out of the push tube. This ensures that the spring coil 1 can be completely separated from the push tube after release, preventing displacement of the spring coil 1, ensuring the formation of intra-aneurysm embolization, guaranteeing treatment effectiveness, and reducing surgical risks.

[0045] In this embodiment, two grippers 51 are provided. In other embodiments, the number of grippers 51 can be adjusted adaptively, and is not limited here.

[0046] As a preferred embodiment, the gripper 51 includes an elastic segment 512 and a clamping segment 513. The proximal ends of all elastic segments 512 are fixedly connected, and the distal ends of the elastic segments 512 are connected to the clamping segment 513. Through holes 7 are formed in the elastic segments 512. When the release member 5 is configured in the released state, the distal ends of the elastic segments 512 are far apart, and the elastic segments 512 are inclined axially relative to the tube body 4. When the release member 5 is configured in the clamping state, the distal ends of the elastic segments 512 are close together, and the clamping segment 513 can clamp the connecting rod 2. In other words, when the release element 5 is in the released state, the two grippers 51 are not constrained by the tube body 4, the distal ends of the two elastic segments 512 are far apart and inclined away from the axis of the tube body 4, and the two elastic segments 512 are V-shaped open, causing the two clamping segments 513 to move away from each other, releasing the clamp 3 and the connecting rod 2, and realizing the release of the spring coil 1; when the release element 5 is in the clamping state, the two grippers 51 are constrained by the tube body 4, the two elastic segments 512 are closed, causing the two clamping segments 513 to move closer to each other, clamping the connecting rod 2. With the above structural setting, the structure of the grippers 51 is relatively simple, and no other auxiliary structure is needed to move the grippers 51 to open and close, avoiding the displacement of the spring coil 1 caused by other structures disturbing the spring coil 1, ensuring the treatment effect, and reducing the surgical risk. In addition, by opening the through hole 7 on the elastic section 512, the rigidity of the elastic section 512 can be reduced to a certain extent, so that the elastic section 512 can produce elastic deformation, ensuring that the release member 5 switches between the clamping state and the release state, and ensuring that the plug spring coil assembly can mechanically release the spring coil 1.

[0047] Furthermore, a groove 8 is recessed on the inner wall of the clamping section 513. The groove 8 extends axially along the tube body 4 and penetrates the distal end face of the clamping section 513 and the wall of the through hole 7. The groove 8 facilitates determining the contact position between the connecting rod 2 and the clamping section 513, facilitates the assembly of the plug spring coil assembly, and ensures that the release member 5 reliably clamps the connecting rod 2 when it is in the clamped state, preventing the connecting rod 2 from disengaging from the gripper 51. This avoids the spring coil 1 being released to the wrong position, reduces the possibility of additional harm to the patient, lowers surgical risks, and ensures surgical safety. Specifically, the groove 8 can be formed by bending the clamping section 513 or by cutting; this is not limited here.

[0048] Preferably, the gripper 51 further includes a fixed section 511, the proximal end of the elastic section 512 is connected to the fixed section 511, and all fixed sections 511 are interconnected. By providing the fixed section 511, compared to a direct fixed connection at the proximal end of the elastic section 512, the connection area between the two grippers 51 is increased, ensuring the reliability of the connection at the proximal end of the grippers 51. This ensures that the grippers 51 can reliably clamp the connecting rod 2 when closed, further preventing the spring coil 1 from being released to the wrong position, reducing surgical risks, and ensuring the safety of the surgery.

[0049] Furthermore, the fixing segment 511 is plate-shaped, and the two fixing segments 511 are attached and connected, which further ensures that there is a large connection area between the two fixing segments 511, ensuring that the clamp 51 can reliably clamp the connecting rod 2 when it is closed, avoiding the spring coil 1 from being released to the wrong position and reducing the surgical risk.

[0050] Preferably, the fixing section 511, the elastic section 512 and the clamping section 513 are integrally connected, that is, the clamp 51 is an integral structure, which is convenient for manufacturing and processing, and also avoids the occurrence of clamp 51 breakage due to low structural strength at the connection, ensuring the durability of the release part 5, while also avoiding additional harm to the patient, ensuring the treatment effect and the safety of the operation.

[0051] In this embodiment, the grippers 51 are made of metal, providing high structural strength and ensuring the durability of the release element 5. The metal material also makes the elastic segment 512 elastic, facilitating the movement of the distal ends of the grippers 51 towards and away from each other. The grippers 51 can be made of one of the following materials: 304 stainless steel, 316 stainless steel, nickel-titanium alloy, platinum-tungsten alloy, or platinum-iridium alloy. The composition of these materials is prior art and will not be described further here. Specifically, the fixing segments 511 of the two grippers 51 are connected by welding.

[0052] Furthermore, the release assembly also includes an operating lever 6, with the proximal ends of at least two grippers 51 connected to the distal end of the operating lever 6, i.e., the proximal end of the fixing section 511 is fixed to the operating lever 6. The operating lever 6 is placed inside the tube body 4 and can move relative to the tube body 4 along its axial direction, thereby switching the release element 5 between a clamping state and a releasing state. This structural configuration, through the relative movement between the operating lever 6 and the tube body 4, simplifies the release operation of the spring coil 1, shortens the surgical time, reduces the fatigue of the surgeon, and ensures the safety of the surgery.

[0053] Preferably, the proximal end of the operating rod 6 extends out of the tube body 4, allowing the doctor to directly grasp and operate the operating rod 6 through the proximal end. This further simplifies the release process of the spring coil 1, shortens the operation time, reduces the doctor's fatigue, and ensures the safety of the operation. It also avoids the need to use other driving components to move the operating rod 6, reducing the impact of vibration generated by the driving components on the surgical outcome. In addition, it reduces the weight of the embolization spring coil assembly, making it easier for the doctor to hold and further reducing the doctor's fatigue.

[0054] In this embodiment, the operating lever 6 is made of metal, which provides high structural strength and ensures its durability. The operating lever 6 can be made of one of the following materials: 304 stainless steel, 316 stainless steel, nickel-titanium alloy, platinum-tungsten alloy, or platinum-iridium alloy. The composition of these materials is prior art and will not be described further here.

[0055] In this embodiment, the operating lever 6 and the fixed section 511 are connected by welding. In other embodiments, the operating lever 6 and the fixed section 511 may be connected in other ways, which are not limited here.

[0056] In this embodiment, the chuck 3 is cylindrical and coaxially connected to the connecting rod 2. In this case, the radial dimension of the chuck 3 along the connecting rod 2 is its diameter; that is, the diameter of the chuck 3 is larger than the diameter of the connecting rod 2.

[0057] In some other embodiments, the chuck 3 is spherical, with its center located on the axis of the connecting rod 2. In this case, the radial dimension of the chuck 3 along the connecting rod 2 is its diameter; that is, the diameter of the chuck 3 is larger than the diameter of the connecting rod 2.

[0058] In other embodiments not mentioned, the chuck 3 may also be a cuboid or other structure, which is not limited here.

[0059] In this embodiment, the connecting rod 2 and the spring coil 1 are coaxially connected, which can be achieved by welding or bonding. Specific connection methods can be found in existing technologies and will not be elaborated further here. The clamp 3 and the connecting rod 2 can also be connected by welding or other methods, which are not limited here.

[0060] For ease of understanding, the usage method of the plug spring coil assembly provided in this embodiment is described in detail below:

[0061] First, place the clamp 3 of the spring coil 1 and the connecting rod 2 between the two jaws 51 of the release element 5 in the released state, and pull the operating rod 6 to move the tube body 4 and the release element 5 axially relative to each other, so that the release element 5 is clamped. Second, insert the distal end of the guidewire into the aneurysm in the patient's body, and insert the proximal end of the guidewire into the gap between the push tube and the tube body 4. Third, move the distal end of the push tube along the guidewire to the aneurysm and withdraw the guidewire. Then, push the tube body 4 inside the push tube until the proximal end of the spring coil 1 is pushed out of the push tube and reaches the aneurysm. Finally, hold and fix the operating rod 6, pull back the tube body 4, and the release element 5 switches to the released state, achieving mechanical release of the spring coil 1.

[0062] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A plug spring coil assembly, characterized in that, include: A spring coil (1) is connected to a connecting rod (2) at its proximal end, and a clamp (3) is connected to the proximal end of the connecting rod (2). The release assembly includes a tube body (4) and a release member (5). The release member (5) includes at least two grippers (51). The at least two grippers (51) are arranged circumferentially along the tube body (4). The proximal ends of all the grippers (51) are connected to each other. A through hole (7) is provided on the gripper (51) along the radial direction of the tube body (4). The release member (5) has a clamping state inside the tube body (4) and a releasing state outside the tube body (4). When the release member (5) is configured in the clamping state, the distal ends of at least two of the jaws (51) are close to each other and can clamp the connecting rod (2), the chuck (3) is located between at least two of the jaws (51) and at least partially extends into the through hole (7), and when the release member (5) is configured in the releasing state, the distal ends of at least two of the jaws (51) are far apart from each other to release the chuck (3) and the connecting rod (2). The gripper (51) includes an elastic segment (512) and a clamping segment (513). The proximal ends of all the elastic segments (512) are fixedly connected, and the distal ends of the elastic segments (512) are connected to the clamping segment (513). The through hole (7) is opened on the elastic segment (512). When the release member (5) is configured to be in the release state, the distal ends of the elastic segments (512) are far apart from each other and inclined away from the axis of the tube body (4). When the release member (5) is configured to be in the clamping state, the distal ends of the elastic segments (512) are close to each other, and the clamping segment (513) can abut against the side wall of the connecting rod (2). The inner wall of the clamping section (513) is recessed with a groove (8), which extends along the axial direction of the tube body (4) and penetrates the distal end face of the clamping section (513) and the wall of the through hole (7). The gripper (51) further includes a fixed segment (511), the proximal end of the elastic segment (512) is connected to the fixed segment (511), and all the fixed segments (511) are interconnected.

2. The embolization spring coil assembly according to claim 1, characterized in that, The release assembly also includes an operating lever (6), with the proximal ends of at least two of the grippers (51) connected to the distal end of the operating lever (6). The operating lever (6) is placed inside the tube (4) and is movable relative to the tube (4) along the axial direction of the tube (4) to allow the release member (5) to switch between the clamping state and the release state.

3. The embolization spring coil assembly according to claim 2, characterized in that, The proximal end of the operating lever (6) extends out of the tube (4).

4. The embolization spring coil assembly according to claim 1, characterized in that, Two grippers (51) are provided, and the fixing segment (511) is plate-shaped. The two fixing segments (511) are attached and connected.

5. The embolization spring coil assembly according to any one of claims 1-4, characterized in that, The embolized spring coil assembly also includes a push tube, which is coaxially sleeved outside the tube body (4), and the tube body (4) and the push tube are arranged radially spaced apart.

6. The embolization spring coil assembly according to any one of claims 1-4, characterized in that, The clamp (3) is cylindrical and is coaxially connected to the connecting rod (2); Alternatively, the chuck (3) is spherical, and the center of the chuck (3) is located on the axis of the connecting rod (2).

7. The embolization spring coil assembly according to any one of claims 1-4, characterized in that, The tube body (4) is made of metal or polymer material; And / or, the release element (5) is made of metal.

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