Spring coil mechanical release device and aneurysm embolization system

Abstract

The application discloses a spring ring mechanical release device and an aneurysm embolization system, relates to the technical field of aneurysm embolization devices, and comprises a push rod and a release mechanism. The distal end of the push rod is provided with a mechanical locking mechanism. The mechanical locking mechanism has a locking state and a loosening state. The mechanical locking mechanism is used for detachable connection with the proximal end of a spring ring. The distal end of the release mechanism is connected with the mechanical locking mechanism. The proximal end of the release mechanism is a force applying end. The locking state and the loosening state of the mechanical locking mechanism can be switched by controlling the force applying end. The application can realize controllability of a spring ring release time, and avoids the problems of spring ring misrelease and poor controllability.

Description

Technical Field

[0001] This invention relates to the field of aneurysm embolization devices, and more particularly to a coil mechanical release device and an aneurysm embolization system. Background Technology

[0002] Implant surgery is a type of surgical procedure that involves inserting implants made of artificial or biological materials (such as prostheses, stents, lenses, electrodes, etc.) into the human body to repair damaged tissues, replace organ function, or correct physiological defects. Its core purpose is to restore normal physiological function and improve the patient's quality of life through the synergistic effect of the implanted foreign body and human tissues. It is widely used in various medical fields such as orthopedics, cardiology, ophthalmology, and otolaryngology, and is one of the important means of modern surgical treatment.

[0003] Artificial prostheses are important devices in implantable treatments. A wide variety of medical materials are used, mainly including biomedical materials and medical artificial prostheses, each with different properties and applied to different surgical procedures. Coils are most commonly used for vascular diseases.

[0004] Embolization coils are interventional medical devices used for the embolization treatment of peripheral aneurysms, arteriovenous malformations, and arteriovenous fistulas. Coil embolization is a minimally invasive interventional treatment technique primarily used to block blood flow in abnormal blood vessels or cavities, and is widely applied in neurointerventional and peripheral vascular interventional fields. Its core principle is to induce thrombus formation by inserting a mechanical occluder (coil) into the target blood vessel, thereby permanently occluding the vessel or cavity.

[0005] Its main mechanisms of action are as follows: First, mechanical occlusion: The coils are made of metals such as platinum and tungsten, possessing shape memory and biocompatibility. When released into the target blood vessel (such as an aneurysm sac, arteriovenous malformation, or bleeding vessel), the coils will restore their preset three-dimensional shape (such as a spiral or complex shape), coiling locally to form a physical barrier that directly blocks the blood flow channel. Second, promoting thrombus formation: The metal surface of the coils can act as a scaffold for platelet and fibrin attachment, rapidly activating the coagulation cascade. The coiled coils significantly slow down local blood flow (creating blood stasis), further promoting thrombus formation. Ultimately, the coiled coils and the stable thrombus formed within them together constitute a permanent embolism, achieving vascular occlusion. Third, hemodynamic alteration: In aneurysm treatment, the coils not only fill the aneurysm cavity but, more importantly, reshape blood flow at the aneurysm neck. It acts like a "shunt," guiding blood flow away from the aneurysm cavity and directly into the distal aneurysm-bearing artery, thereby significantly reducing intra-aneurysm pressure and blood flow impact, preventing rupture or regrowth.

[0006] Coil embolization is the mainstream minimally invasive interventional method for treating arterial aneurysms. However, the current methods for releasing coils are mainly electrolytic release and mechanical release. Electrolytic release relies on the conductivity of blood, resulting in slow release speed, poor controllability of the release process, and a high risk of release failure. Traditional mechanical release structures also have relatively poor controllability, with the risk of premature release or difficulty in release.

[0007] Therefore, there is an urgent need for a precise and reliable operating device. Summary of the Invention

[0008] The purpose of this invention is to provide a mechanical release device for spring coils and an aneurysm embolization system to solve the problems existing in the prior art, enabling controllability of the timing of spring coil release and avoiding problems such as accidental release of spring coils and poor controllability.

[0009] To achieve the above objectives, the present invention provides the following solution:

[0010] A mechanical release device for a spring coil includes a push rod and a release mechanism. The distal end of the push rod is provided with a mechanical locking mechanism, which has a locked state and an unlocked state. The mechanical locking mechanism is used for detachable connection with the proximal end of the spring coil. The distal end of the release mechanism is connected to the mechanical locking mechanism, and the proximal end of the release mechanism is a force-applying end. By operating the force-applying end, the locked state and unlocked state of the mechanical locking mechanism can be switched.

[0011] As one embodiment, the mechanical locking mechanism includes at least two jaws evenly spaced along the circumference of the push rod; the plurality of jaws are used to clamp the proximal end of the spring coil; the release mechanism is capable of controlling the interval between the plurality of jaws to switch between a locking state and a releasing state achieved by the engagement of the plurality of jaws.

[0012] As one embodiment, each of the grippers is provided with a through hole, and the release mechanism includes a traction wire. The traction wire passes through the through holes on all the grippers in sequence. By adjusting the force applied to the traction wire, the locking and unlocking states achieved by the cooperation of multiple grippers can be switched.

[0013] The present invention also provides an aneurysm embolization system, comprising a catheter, a guide tube, coils, and a coil mechanical release device as described above; along the length direction, at least two balloons are spaced apart at the distal end of the catheter, and an exchange port is provided on the catheter wall between adjacent balloons; the catheter has a main lumen and at least one media lumen arranged in parallel, the media lumen communicating with the balloons; the exchange port communicating with the main lumen of the catheter; the guide tube is movably inserted into the main lumen; a push rod in the coil mechanical release device drives the coils to move through the guide tube, and the proximal end of the release mechanism is exposed from the proximal end of the guide tube.

[0014] As one embodiment, imaging rings are provided at both ends of the balloon and at the distal end of the guide tube.

[0015] In one embodiment, the spring coil includes a spring body, a connecting ball, a guide ball, and a connecting wire; the connecting ball is fixed to the proximal end of the spring body and is detachably connected to the mechanical locking mechanism; the guide ball is fixed to the distal end of the spring body; and the two ends of the connecting wire are respectively connected to the connecting ball and the guide ball.

[0016] As one embodiment, it also includes a handle connected to the proximal end of the conduit. The handle is provided with a guide tube pushing mechanism, a push rod pushing mechanism, and a force application mechanism. The guide tube pushing mechanism is connected to the guide tube and can push the guide tube; the push rod pushing mechanism is connected to the push rod and can push the push rod; the force application mechanism is connected to the proximal end of the release mechanism and is used to apply force to the release mechanism to control the connection state between the mechanical locking mechanism and the spring coil.

[0017] As one embodiment, both the guide tube pushing mechanism and the push rod pushing mechanism are wheel-type pushing mechanisms. The wheel-type pushing mechanism includes a first rotating wheel and a second rotating wheel, with a feeding interval formed between the first rotating wheel and the second rotating wheel. The guide tube or the push rod is located in the feeding interval and abuts against the first rotating wheel and the second rotating wheel.

[0018] As one embodiment, the proximal end of the guide tube has a guide tube seat, which can abut and limit the guide tube pushing mechanism.

[0019] As one embodiment, a sealing ring is also provided in the inner wall of the proximal end of the guide tube, and the sealing ring is in a sealed fit with the outer wall of the push rod.

[0020] Compared with the prior art, the present invention has the following technical effects:

[0021] The spring coil mechanical release device of the present invention is provided with a mechanical locking mechanism connected to the proximal end of the spring coil, and the state of the mechanical locking mechanism is controlled by the release mechanism. The release mechanism can select the release time of the mechanical locking mechanism without delay, realize the controllability of the release time of the spring coil, and avoid the problems of accidental release of the spring coil and poor controllability.

[0022] The aneurysm embolization system of the present invention, by placing at least two balloons at intervals on the catheter and using the two balloons across the aneurysm neck, can locate the catheter and provide active and controllable protection for wide-necked aneurysms, reducing the risk of coil escape. Moreover, combined with immediate balloon assistance, it helps to achieve denser and more stable aneurysm cavitation, which is especially suitable for aneurysms with complex morphology. In addition, this embodiment has an exchange hole on the outer wall of the catheter between the two balloons for the guide tube to pass through. The balloons will not obstruct the placement of the coils, ensuring the patency of coil placement. It realizes a single-system operation of "access establishment - aneurysm neck protection - embolization release", reducing instrument exchanges and shortening operation time. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of a spring coil mechanical release device in one embodiment of the present invention;

[0025] Figure 2 for Figure 1 Enlarged schematic diagram of region A in the middle;

[0026] Figure 3 This is a schematic diagram of the aneurysm embolization system in the spring coil unreleased state according to one embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of the aneurysm embolization system in the coil-free state according to one embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the guide tube in one embodiment of the present invention;

[0029] Figure 6 This is a schematic diagram of the catheter structure in one embodiment of the present invention;

[0030] Figure 7 This is a schematic diagram of the spring coil in one embodiment of the present invention;

[0031] Figure 8 This is a schematic diagram of the sheath structure in one embodiment of the present invention;

[0032] Figure 9 This is a schematic diagram of the handle structure in one embodiment of the present invention;

[0033] Figure 10 This is a schematic diagram of the aneurysm embolization system at the aneurysm site (with the spring coils not released) in one embodiment of the present invention;

[0034] Figure 11 This is a schematic diagram of the aneurysm embolization system at the aneurysm site (spring coil release) in one embodiment of the present invention.

[0035] Figure label:

[0036] 1. Push rod; 2. Mechanical locking mechanism; 201. Gripper; 202. Through hole; 3. Spring coil; 301. Spring body; 302. Connecting ball; 303. Guide ball; 304. Connecting wire; 305. Cilia; 4. Traction wire; 5. Catheter; 501. Balloon; 502. Exchange hole; 503. Imaging ring; 504. Catheter seat; 6. Guide tube; 601. Guide tube seat; 602. Sealing ring; 7. Sheath; 8. Handle; 801. Guide tube pushing mechanism; 802. Push rod pushing mechanism; 803. Force application mechanism; 804. Push rod storage compartment; 805. Sealing ring. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described 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.

[0038] The purpose of this invention is to provide a mechanical release device for spring coils and an aneurysm embolization system to solve the problems existing in the prior art, enabling controllability of the timing of spring coil release and avoiding problems such as accidental release of spring coils and poor controllability.

[0039] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0040] Example 1:

[0041] like Figures 1-11As shown, this embodiment provides a mechanical release device for a spring coil 3, including a push rod 1 and a release mechanism. A mechanical locking mechanism 2 is provided at the distal end of the push rod 1, and the mechanical locking mechanism 2 has a locked state and a released state. The mechanical locking mechanism 2 is used for detachable connection with the proximal end of the spring coil 3, and the proximal end of the spring coil 3 is usually provided with a connector for easy connection of the mechanical locking mechanism 2. When the mechanical locking mechanism 2 is in the locked state, it is connected to the proximal end of the spring coil 3; when it is in the released state, it is disconnected from the proximal end of the spring coil 3. The distal end of the release mechanism is connected to the mechanical locking mechanism 2, and the proximal end of the release mechanism is the force-applying end. The operator can switch the locked and released states of the mechanical locking mechanism 2 by manipulating the force-applying end, thereby fixing and releasing the spring coil 3.

[0042] In this embodiment, "proximal end" refers to the end closer to the surgeon, and "distal end" refers to the end farther from the surgeon, i.e., the end closer to the patient.

[0043] In use, the mechanical locking mechanism 2 at the distal end of the push rod 1 is fixedly connected to the proximal end of the spring coil 3. The release mechanism applies force to the mechanical locking mechanism 2, keeping it locked and preventing the spring coil 3 from being accidentally released. The push rod 1 and the spring coil 3 are inserted into the affected area via the catheter 5. The operator uses the release mechanism to change the mechanical locking mechanism from the locked state to the released state, thus releasing the spring coil 3.

[0044] Therefore, in this embodiment, the mechanical locking mechanism 2 is connected to the proximal end of the spring coil 3, and the state of the mechanical locking mechanism 2 is controlled by the release mechanism. The timing of the release of the mechanical locking mechanism 2 can be selected without delay, thus achieving controllability of the release timing of the spring coil 3 and avoiding the problems of accidental release and poor controllability of the spring coil 3.

[0045] like Figure 1 , Figure 2 As shown, in this embodiment, the mechanical locking mechanism 2 includes at least two grippers 201 evenly spaced along the circumference of the push rod 1; the multiple grippers 201 are used to clamp the proximal end of the spring coil 3; the release mechanism can control the interval between the multiple grippers 201 to switch between the locking state and the releasing state achieved by the cooperation of the multiple grippers 201.

[0046] Specifically, in this embodiment, each gripper 201 is provided with a through hole 202. The release mechanism includes a traction wire 4, which passes through the through holes 202 on all grippers 201 in sequence. By adjusting the force applied to the traction wire 4, the locking and unlocking states achieved by the cooperation of multiple grippers 201 can be switched. In this embodiment, the traction wire 4 and the push rod 1 are arranged in parallel. The proximal end of the traction wire 4 is exposed from the proximal port of the conduit 5 device, allowing the operator to operate the traction wire 4. When the traction wire 4 is tightened, the multiple grippers 201 converge and are in a locked state, and the spring coil 3 cannot be released; when the traction wire 4 is relaxed, the multiple grippers 201 separate and are in an unlocked state, and the spring coil 3 is released.

[0047] In this embodiment, the proximal end of the gripper 201 can be fixedly connected to the distal end of the push rod 1. Based on the material properties and shape characteristics of the gripper 201, the gripper 201 can open and close to a certain extent, realizing the switching between locked and released states. For example, when the traction wire 4 is tightened, the force exerted by the traction wire 4 on the gripper 201 increases, and the gripper 201 undergoes a certain bending deformation. Multiple grippers 201 converge due to the bending deformation, thus fixing the proximal end of the spring coil 3. When the traction wire 4 is relaxed, the force exerted by the traction wire 4 on the gripper 201 decreases, and the gripper 201 returns to its original shape or deformed state. Multiple grippers 201 separate from each other, thus releasing the spring coil 3.

[0048] This embodiment utilizes the cooperation of the gripper 201 and the traction wire 4 to lock and release the spring coil 3. Its structure is simpler, its manufacturing cost is lower, and its control is more convenient, which is conducive to the smooth progress of the operation.

[0049] Example 2:

[0050] like Figures 1-11 As shown, this embodiment provides an aneurysm embolization system, including a catheter 5, a guide tube 6, a spring coil 3, and a mechanical release device for the spring coil 3 as described in Embodiment 1. Along its length, at least two balloons 501 are spaced apart at the distal end of the catheter 5, and exchange holes 502 are provided on the wall of the catheter 5 between adjacent balloons 501. The catheter 5 has a main lumen and at least one media lumen arranged in parallel. The media lumen communicates with the balloons 501 and is used to inflate or deflate the balloons 501, causing them to inflate or deflate. In this embodiment, one media lumen may correspond to multiple balloons 501, controlling the inflation of multiple balloons 501 through one media lumen; alternatively, a one-to-one correspondence may exist between the media lumen and balloons 501, with one media lumen controlling the inflation of one balloon 501. In this embodiment, a catheter seat 504 is provided at the proximal end of the catheter 5. The catheter seat 504 has multiple connection ports; in this embodiment, the catheter seat 504 has three connection ports, communicating with the main lumen and the two media lumens respectively.

[0051] In this embodiment, the exchange hole 502 is connected to the main lumen of the conduit 5; the guide tube 6 is movably inserted into the main lumen, with its distal end able to pass through the exchange hole 502 and its proximal end exposed from the proximal end of the main lumen, facilitating control of the guide tube 6 by the operator. The push rod 1 in the mechanical release device of the spring coil 3 drives the spring coil 3 to movably insert into the guide tube 6, with the proximal end of the release mechanism exposed from the proximal end of the guide tube 6, facilitating control of the release mechanism by the operator.

[0052] The aneurysm embolization system in this embodiment may also include a sheath 7, which has excellent torque transmission properties and is used to establish an initial vascular access. The catheter 5 is inserted into the body through the sheath 7.

[0053] In use, a guidewire is inserted via femoral artery puncture. Under the guidance of the guidewire, a sheath 7 is inserted, and then the guidewire is inserted through the exchange port 502. The entire aneurysm embolization system is then advanced along the guidewire to the aneurysm-bearing artery. The guidewire is withdrawn, and the catheter 5 is advanced through the sheath 7, allowing two balloons 501 to cross the aneurysm neck. The balloons 501 are then inflated and precisely positioned at the aneurysm neck.

[0054] The guide tube 6 is then pushed forward, allowing its distal end to penetrate into the aneurysm cavity. To facilitate this insertion, the distal end of the guide tube 6 can be designed with a curved structure. As the guide tube 6 travels within the catheter 5, its radius of curvature increases due to the confinement provided by the catheter 5, allowing it to move within the catheter 5. When the distal end of the guide tube 6 reaches the exchange port 502, the exchange port 502 no longer restricts its movement, and the distal end of the guide tube 6 returns to its curved shape, extending from the exchange port 502 towards the aneurysm cavity, thus facilitating its insertion into the cavity.

[0055] Specifically, the distal bending structure of the guide tube 6 can be made of shape memory alloy, or the entire guide tube 6 can be made of shape memory alloy.

[0056] Push rod 1 to send the pre-installed spring coil 3 into the cavity, and control the mechanical locking mechanism 2 to release the spring coil 3 through the release mechanism.

[0057] If assistance is needed, an appropriate amount of contrast agent is injected into the side cavity to inflate balloon 501 and seal the aneurysm neck. If multiple coils 3 need to be inserted and released sequentially, during the process of re-inserting the plunger 1 after removing and installing coils 3, the catheter 5 is positioned by the inflated balloon 501, and its shape is fixed. This may cause significant resistance during the re-insertion of the plunger 1. Dynamically adjusting the inflation of balloon 501 can reduce the positioning effect of balloon 501, improve the compliance of catheter 5 in the blood vessel, and make it easier to re-insert the plunger 1. Furthermore, it is only necessary to withdraw the plunger 1, reinstall the coils 3 at the distal end of the plunger 1, and then re-insert the coils 3.

[0058] After embolization, the balloon 501 is depressurized, and after confirming that no coil 3 has come out, the entire system is removed from the body.

[0059] This embodiment, by placing at least two balloons 501 at intervals on the catheter 5, and using the two balloons 501 to span the aneurysm neck, can position the catheter 5 and provide active and controllable protection for wide-necked aneurysms, reducing the risk of coil 3 escape. Moreover, based on the positioning function of the balloons 501, combined with the curved structure of the distal end of the guide tube 6, the coil 3 can be pushed into the depth of the aneurysm cavity by the push rod 1, which helps to achieve denser and more stable aneurysm cavity packing, especially suitable for complex-shaped aneurysms. In addition, this embodiment provides an exchange hole 502 on the outer wall of the catheter 5 between the two balloons 501 for the guide tube 6 to pass through. The balloons 501 will not obstruct the insertion of the coil 3, ensuring the patency of coil 3 insertion. This realizes a single-system operation of "access establishment - aneurysm neck protection - packing release", reducing instrument exchanges and shortening the operation time.

[0060] To facilitate confirmation of the positions of the balloon 501 and the guide tube 6, in this embodiment, both ends of the balloon 501 and the distal end of the guide tube 6 are provided with radiopaque rings 503. A radiopaque ring 503 may also be provided at the distal end of the sheath 7.

[0061] like Figure 7 As shown, in this embodiment, the spring coil 3 includes a spring body 301, a connecting ball 302, a guide ball 303, and a connecting line 304. The connecting ball 302 is fixed to the proximal end of the spring body 301 and is detachably connected to the mechanical locking mechanism 2. Specifically, when the multiple jaws 201 in the mechanical locking mechanism 2 converge, they can clamp the connecting ball 302; when the multiple jaws 201 separate, the connecting ball 302 can disengage from the jaws 201, thus releasing the spring coil 3. The guide ball 303 is fixed to the distal end of the spring body 301 and is used to guide the spring body 301. The two ends of the connecting line 304 are connected to the connecting ball 302 and the guide ball 303, respectively, to maintain the shape of the spring body 301 and ensure that the spring body 301 will not unwind due to external force, causing the fibers 305 on the spring body 301 to fall off.

[0062] like Figure 9 As shown, this embodiment also includes a handle 8, which is connected to the proximal end of the conduit 5. The handle 8 is provided with a guide tube pushing mechanism 801, a push rod pushing mechanism 802, and a force application mechanism 803. The guide tube pushing mechanism 801 is connected to the guide tube 6 and can push the guide tube 6; the push rod pushing mechanism 802 is connected to the push rod 1 and can push the push rod 1; the force application mechanism 803 is connected to the proximal end of the release mechanism and is used to apply force to the release mechanism to switch the locking state and the unlocking state of the mechanical locking mechanism 2, that is, to control the connection state between the mechanical locking mechanism 2 and the spring ring 3.

[0063] The handle 8 also has a push rod storage compartment 804, which can be used to store longer push rods 1; the force application mechanism 803 is equipped with a release force detection module, which can detect the release force of the traction wire 4 to determine the release status of the spring coil 3. The distal end of the handle 8 is also equipped with a sealing ring 805, which plays a sealing role through the connection position between the conduit 5 and the handle 8 to prevent blood from flowing out from the gap between the conduit 5 and the handle 8.

[0064] In this embodiment, both the guide tube pushing mechanism 801 and the push rod pushing mechanism 802 are wheel-type pushing mechanisms. Each wheel-type pushing mechanism includes a first rotating wheel and a second rotating wheel, with a feeding interval formed between them. The guide tube 6 or push rod 1 is located within the feeding interval and abuts against the first and second rotating wheels. During operation, the first and second rotating wheels can rotate in opposite directions, pushing the guide tube 6 or push rod 1 further away or retracting it towards the near end.

[0065] The wheel-type pushing mechanism is a commonly used pushing structure in this field. The specific configuration of the first and second rotating wheels will not be described in detail in this embodiment.

[0066] like Figure 5 As shown, in this embodiment, the proximal end of the guide tube 6 has a guide tube seat 601, which can abut and limit the guide tube pushing mechanism 801. In this embodiment, a sealing ring 602 is also provided in the inner wall of the proximal end of the guide tube 6. The sealing ring 602 is sealed and fitted with the outer wall of the push rod 1 to prevent blood from flowing out from the gap between the push rod 1 and the guide tube 6.

[0067] Any adaptive changes made according to actual needs are within the scope of protection of this invention.

[0068] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A mechanical release device for a spring coil, characterized in that, include: A push rod, the distal end of which is provided with a mechanical locking mechanism, the mechanical locking mechanism having a locked state and an unlocked state; the mechanical locking mechanism is used for detachable connection with the proximal end of the spring coil; And a release mechanism, the distal end of which is connected to the mechanical locking mechanism, and the proximal end of which is the force-applying end, which can switch the locking and unlocking states of the mechanical locking mechanism by manipulating the force-applying end; The mechanical locking mechanism includes at least two jaws evenly spaced along the circumference of the push rod; the jaws are used to clamp the proximal end of the spring coil; the release mechanism can control the interval between the jaws to switch between a locking state and a releasing state achieved by the engagement of the jaws. Each of the grippers is provided with a through hole, and the release mechanism includes a traction wire. The traction wire passes through the through holes on all the grippers in sequence. By adjusting the force applied to the traction wire, the locking and unlocking states achieved by the cooperation of multiple grippers can be switched.

2. An aneurysm embolization system, characterized in that, include: Along its length, the distal end of the catheter is provided with at least two balloons spaced apart, and an exchange port is provided on the catheter wall between adjacent balloons. The catheter has a main lumen and at least one media lumen arranged in parallel, the media lumen communicating with the balloons; the exchange port communicating with the main lumen of the catheter. Guide tube, which is movably inserted into the main tube cavity; Spring coil; The spring coil mechanical release device as described in claim 1, wherein the push rod in the spring coil mechanical release device drives the spring coil to move through the guide tube, and the proximal end of the release mechanism is exposed from the proximal end of the guide tube.

3. The aneurysm embolization system according to claim 2, characterized in that, The balloon has imaging rings at both ends and at the distal end of the guide tube.

4. The aneurysm embolization system according to claim 2, characterized in that, The spring coil includes: Spring body; A connecting ball is fixed to the proximal end of the spring body and is detachably connected to the mechanical locking mechanism; A guide ball, which is fixed to the distal end of the spring body; And a connecting line, the two ends of which are connected to the connecting ball and the guide ball, respectively.

5. The aneurysm embolization system according to claim 2, characterized in that, It also includes a handle, which is connected to the proximal end of the catheter, and the handle is provided with: A guide tube pushing mechanism is connected to the guide tube and is capable of pushing the guide tube. A push rod pushing mechanism is connected to the push rod and is capable of pushing the push rod. The mechanism includes a force-applying mechanism connected to the proximal end of the release mechanism for applying force to the release mechanism to control the connection state between the mechanical locking mechanism and the spring coil.

6. The aneurysm embolization system according to claim 5, characterized in that, Both the guide tube pushing mechanism and the push rod pushing mechanism are wheel-type pushing mechanisms. The wheel-type pushing mechanism includes a first rotating wheel and a second rotating wheel, and a feeding interval is formed between the first rotating wheel and the second rotating wheel. The guide tube or the push rod is located in the feeding interval and abuts against the first rotating wheel and the second rotating wheel.

7. The aneurysm embolization system according to claim 5, characterized in that, The proximal end of the guide tube has a guide tube seat, which can abut and limit the guide tube pushing mechanism.

8. The aneurysm embolization system according to claim 2 or 7, characterized in that, A sealing ring is also provided in the inner wall of the near end of the guide tube, and the sealing ring is in a sealed fit with the outer wall of the push rod.

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