A mechanical release embolization coil device

Abstract

The present invention belongs to the technical field of medical devices, and discloses a mechanical detachment embolization coil device, which includes: a push tube, a coil, a clamping block, a clamping member, and a release assembly. The coil is arranged at the distal end of the push tube and partially extends into the push tube; the clamping block is arranged at the proximal end of the coil; the clamping member is rotatably connected to the distal end of the push tube, and the clamping member has a notch for the clamping block to slide in or out, and the cross-sectional area of the clamping block is larger than the cross-sectional area of the notch. In the application of this mechanical detachment embolization coil device, the coil is quickly released through the cooperation of the release assembly and the clamping member, reducing the possibility of the coil being clamped with the push tube after release, ensuring that the coil stays smoothly at the designated position, so as to effectively improve the success rate of the operation.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly relates to a mechanical detachment embolization coil device. Background Art

[0002] An embolization coil is a medical device used for treating aneurysms. It is delivered to the lesion site using a corresponding delivery system, and then the connection between the delivery system and the embolization coil is detached using a specific detachment method, so as to retain the embolization coil at the lesion site.

[0003] In the prior art, this device mainly includes a catheter, a claw disposed within the catheter, and a coil connected to the claw. During delivery, the catheter is used to push the claw and the coil to the lesion site, and the catheter is separated from the claw. After the claw is separated from the catheter, it will automatically expand and separate from the coil, completing the separation of the coil.

[0004] However, in the above process, the claw occupies a relatively large space during the automatic expansion process, and the limited space within the blood vessel results in a limited expansion amplitude of the claw. Moreover, during release, part of the structure of the coil is still in the middle of the claw, which may cause the claw to catch the coil when the claw is retracted, resulting in the failure of the operation. Summary of the Invention

[0005] The purpose of the present invention is to provide a mechanical detachment embolization coil device, which solves the problem that the coil is still prone to being caught by the claw after detachment in the prior art, resulting in the failure of the operation.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] A mechanical detachment embolization coil device, which includes: a push tube, a coil, a block, a clamping member, and a release assembly. The coil is disposed at the distal end of the push tube and partially extends into the push tube; the block is disposed at the proximal end of the coil; the clamping member is rotatably connected to the distal end of the push tube, and the clamping member has a notch for the block to slide in or out, and the cross-sectional area of the block is larger than the cross-sectional area of the notch. The release assembly is disposed within the push tube and extends out of the proximal end of the push tube, and the release assembly is connected to the clamping member to drive the clamping member to rotate, so that the block slides out of the notch to release the coil.

[0008] Optionally, the clamping member includes: a clamping rod fixed within the push tube; and a clamping plate rotatably connected to the clamping rod, one side of the clamping plate is connected to the release assembly, and the notch is disposed on the other side of the clamping plate.

[0009] Optionally, the block is a sphere.

[0010] Optionally, the release assembly includes a release rod, the distal end of the release rod is movably connected to the clamping member, and the proximal end of the release rod extends out of the push tube.

[0011] Optionally, the release assembly includes an abutting portion that partially extends into the push tube and abuts against the clamping member; and a push rod that is slidably connected in the push tube and selectively abuts against the proximal end of the clamping member.

[0012] Optionally, the abutting portion is an abutting rope, and the proximal end of the abutting rope extends out of the push tube.

[0013] Optionally, the release assembly includes a release cap that is slidably connected to the proximal end of the push tube; a release rope, the proximal end of the release rope is connected to the release cap, and the distal end of the release rope is connected to the clamping member; and an elastic member that is respectively connected to the clamping member and the push tube to limit the movement of the clamping member.

[0014] Optionally, the release assembly further includes a connecting block that is movably connected to the proximal end of the clamping member, and the elastic member is fixedly connected to the connecting block.

[0015] Optionally, the release assembly further includes a fixing block that is fixed on the inner wall of the push tube and fixedly connected to the proximal end of the elastic member.

[0016] Optionally, the release cap is threadedly connected to the push tube.

[0017] Advantages of the present invention:

[0018] When implanting the embolization coil, the push tube transports the coil to the designated position. Through the release assembly, the clamping member can be driven to rotate at the distal end of the push tube. As the clamping member rotates, the clamping block gradually slides out of the notch, and the coil is thus completely disengaged from the clamping member, smoothly leaving the coil at the designated position. In this way, the release of the coil is quickly completed through the cooperation of the release assembly and the clamping member, reducing the possibility of the coil being clamped to the push tube after release, ensuring that the coil stays smoothly at the designated position, and effectively improving the success rate of the operation. Description of the Drawings

[0019] Figure 1 Shown is a schematic structural diagram of a mechanical detachment embolization coil device in some embodiments of the present invention.

[0020] Figure 2 Shown is a schematic structural diagram of the clamping member of a mechanical detachment embolization coil device in some embodiments of the present invention.

[0021] Figure 3 Shown is a schematic structural diagram of the coil release of a mechanical detachment embolization coil device in some embodiments of the present invention.

[0022] Figure 4 The following is a schematic structural diagram of the coil and the block of the mechanical release embolization coil device in some embodiments of the present invention.

[0023] Figure 5 The following is a schematic structural diagram of the push rod and the abutting part of the mechanical release embolization coil device fixing the coil in some embodiments of the present invention.

[0024] Figure 6 The following is a schematic structural diagram of the push rod and the abutting part of the mechanical release embolization coil device releasing the coil in some embodiments of the present invention.

[0025] Figure 7 The following is a schematic structural diagram of fixing the coil in the third embodiment of the mechanical release embolization coil device in some embodiments of the present invention.

[0026] Figure 8 The following is a schematic structural diagram of releasing the coil in the third embodiment of the mechanical release embolization coil device in some embodiments of the present invention.

[0027] In the figure:

[0028] 100, push tube; 200, coil; 210, connecting rod; 300, block; 400, clamping member; 410, notch; 420, clamping rod; 430, clamping plate; 500, release assembly; 510, release rod; 520, abutting part; 530, push rod; 540, release cap; 550, release rope; 560, elastic member; 570, connecting block; 580, fixing block. Detailed implementation manners

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. Additionally, it should be noted that for the sake of description, only parts related to the present invention are shown in the drawings, rather than all the structures.

[0030] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0031] In the present invention, unless otherwise clearly specified or limited, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0032] In the description of this embodiment, the orientation or positional relationships such as "up", "down", "right", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0033] A coil is a medical device used to treat aneurysms. An aneurysm is a common disease, and generally aneurysms are small. In some patients, the aneurysm will not rupture throughout their lives and there is no life danger. However, once an aneurysm ruptures, it will present as primary subarachnoid hemorrhage (SAH), which will then cause acute stroke, and it is a common disease seriously endangering life.

[0034] The treatment methods for primary subarachnoid hemorrhage caused by aneurysm rupture are surgical clipping and endovascular embolization. With the progress of endovascular treatment technology, the indications of this treatment method are becoming wider and the effects are more certain. Comprehensive global treatment data on the use of this method show that the mortality and disability rates of endovascular treatment are significantly lower than those of surgical clipping, which is closely related to the development of new endovascular treatment technologies and new materials. Now more and more physicians and patients choose this minimally invasive and reliable treatment method.

[0035] Endovascular treatment for aneurysms refers to implanting embolization coils into blood vessels. The conventional process involves puncturing the femoral artery, inserting a guiding catheter, and under fluoroscopic imaging, sending the guiding catheter through the blood flow system into the parent artery of the aneurysm. A microcatheter is sent through the guiding catheter into the parent artery of the aneurysm. With the assistance of a microguide wire, the microcatheter is sent through the aneurysm opening into the aneurysm cavity. The distal end of the microcatheter is maintained at the 1 / 3 - 1 / 2 position near the aneurysm neck, and for smaller aneurysms, it can be placed at the aneurysm neck. Finally, coils are sent into the aneurysm cavity through the microcatheter to fill the aneurysm cavity. By utilizing the mechanical occlusion effect of the coils and the subsequent thrombus occlusion effect, the aneurysm is isolated from the blood circulation of the parent artery, blocking blood from flowing into the aneurysm, thereby achieving the purpose of preventing the aneurysm from rupturing and effectively preventing the possibility of cerebral hemorrhage stroke. For patients with aneurysms that have already bled, the minimally invasive therapy of aneurysm embolization can effectively prevent the aneurysm from bleeding continuously.

[0036] Currently, there are four main methods for detaching coils: hydrolysis detachment, electrolysis detachment, thermal melting detachment, and mechanical detachment. Hydrolysis detachment is achieved by introducing a solvent into the delivery catheter to dissolve and detach the coil. It has the problem of unstable detachment method. Moreover, injecting too much solvent easily increases blood vessel pressure, and if the solvent injection volume is insufficient, it cannot reach the position where the coil is detached, making it difficult to achieve detachment. Electrolysis detachment is that the coil and the guide wire are welded together by electric welding. After the electric welding cools, the welded part will be uneven, easily generating a relatively high voltage, resulting in the detachment time of the coil from the microcatheter being difficult to control, and the detachment time ranges from 30 seconds to several minutes. Thermal melting detachment requires introducing current, wires, electrodes, etc., and generates heat through electricity. When the heat reaches a certain level, the thermal melting wire is melted to achieve coil detachment. Smoke will be generated during thermal melting, causing local damage in the human body and increasing the patient's pain.

[0037] The current mainstream method of mechanical detachment is the loop type, that is, an active connecting rod is added. The end of the active connecting rod has a spherical feature, the head end of the active connecting rod is connected to the coil, and the detachment wire is assembled with the active connecting rod and placed into the delivery catheter together. The coil is detached by retracting the detachment wire. However, during detachment, the detachment point is easily affected by mechanical force, resulting in deviation of the implant position, increasing the surgical risk for doctors, affecting the treatment effect, and even endangering the patient's life. In addition, this mechanical detachment structure is difficult to process and has a high cost.

[0038] In order to better achieve the rapid detachment of the coil, elastic jaws are added inside the delivery catheter. The jaws are squeezed against each other inside the delivery catheter to keep the jaws in a compressed state. At this time, the jaws are engaged with the coil. When the coil reaches the lesion site, the jaws are then pushed out of the delivery catheter, and the coil is pushed to the designated position. After the coil extends out of the delivery catheter, the jaws automatically expand to detach the coil, and the detachment of the coil can be quickly completed. However, the jaws are subject to significant friction from the delivery catheter when moving, so it is quite laborious to push the jaws, and it is difficult to accurately push the coil to the designated position. Moreover, when the jaws automatically expand, they will occupy more space, resulting in the jaws being prone to getting stuck with the previously placed coils and also being prone to contacting the blood vessel wall and damaging the blood vessel, increasing the possibility of accidents during the operation and reducing the success rate of the operation.

[0039] For the embolization coil provided by the present invention, before input, a rotatable engaging member is arranged inside the pusher tube to engage with the block of the coil, thereby fixing the coil. After the coil reaches the designated position, the release assembly is used to drive the engaging member to move, so that the block slides out of the notch of the engaging member, thereby separating the block from the engaging member, and the coil can be completely separated from the pusher tube. This not only prevents the engaging member from contacting the blood vessel, but also can effectively separate the coil from the engaging member, reducing the possibility of accidents during the operation and effectively improving the success rate of the operation.

[0040] After briefly introducing the implementation principle of the present invention, the following specifically introduces each embodiment of the present invention with reference to the accompanying drawings.

[0041] A mechanical detachment embolization coil device provided by the present invention.

[0042] Embodiment 1

[0043] Figure 1 The figure shows a schematic structural diagram of a mechanical detachment embolization coil device in some embodiments of the present invention. Figure 2 The figure shows a schematic structural diagram of the engaging member of the mechanical detachment embolization coil device in some embodiments of the present invention. Refer to Figure 1 and Figure 2As shown in the figure, the structure includes a push tube 100, a coil 200, a clamping block 300, a clamping member 400, and a release assembly 500. The coil 200 is disposed at the distal end of the push tube 100 and partially extends into the push tube 100. The clamping block 300 is disposed at the proximal end of the coil 200. The clamping member 400 is rotatably connected to the distal end of the push tube 100. The clamping member 400 has a notch 410 for the clamping block 300 to slide in or out. The cross-sectional area of the clamping block 300 is larger than that of the notch 410. The release assembly 500 is disposed in the push tube 100 and extends out of the proximal end of the push tube 100. The release assembly 500 is connected to the clamping member 400 to drive the clamping member 400 to rotate, so that the clamping block 300 slides out of the notch 410 to release the coil 200.

[0044] Specifically, a dedicated delivery system, such as a delivery tube, is provided outside the push tube 100. The push tube 100 is disposed inside the delivery tube. A structure such as a radiopaque ring can also be provided at the distal end of the delivery tube to display the position under X-ray irradiation.

[0045] Figure 3 The figure shows a schematic structural diagram of the coil release of a mechanically detachable embolization coil device in some embodiments of the present invention. Figure 4 The figure shows a schematic structural diagram of the coil and the clamping block of a mechanically detachable embolization coil device in some embodiments of the present invention. Refer to Figure 3 and Figure 4 As shown in the figure, the coil 200 is located outside the distal end of the push tube 100. The clamping member 400 is located inside the push tube 100 and is disposed near the distal end of the push tube 100. The notch 410 is located on the side of the clamping member 400 close to the coil 200. A connecting rod 210 can be fixedly provided at the proximal end of the coil 200. The axis of the connecting rod 210 is collinear with the axis of the push tube 100. The connecting rod 210 and the coil 200 can be integrally formed, or can be fixedly connected by welding or bonding.

[0046] Refer to Figure 2 and Figure 3 As shown in the figure, the proximal end of the connecting rod 210 extends into the push tube 100 and passes through the notch 410. The clamping block 300 is disposed on the end face of the proximal end of the connecting rod 210, and the two can be fixedly connected together by welding or bonding. It should be understood that the connecting rod 210 may not be collinear with the axis of the push tube 100. For example, it can be inclined and the extension line of its axis can intersect with the axis of the push tube 100, as long as it can smoothly slide in and out of the notch 410. The specific setting angle and length of the connecting rod 210 can be designed according to the actual installation space, and the present invention does not make any limitations.

[0047] It should be noted that in the present invention, "proximal end" and "distal end" are relative to the operator. When the operator holds the push tube 100, the end close to the operator is the proximal end, and the end far from the operator is the distal end. Taking Figure 1 the direction in

[0048] as an example, the left side is the proximal end of the push tube 100, and the right side is the distal end of the push tube 100. When implanting the embolization coil 200, the push tube 100 transports the coil 200 to the designated position. Through the release assembly 500, the clamping member 400 can be driven to rotate at the distal end of the push tube 100. As the clamping member 400 rotates, the connecting rod 210 gradually slides out of the notch 410, and the clamping block 300 will disengage from the notch 410, and the coil 200 is completely disengaged from the clamping member 400, so as to smoothly retain the coil 200 at the designated position. In this way, through the cooperation of the release assembly 500 and the clamping member 400, the release of the coil 200 is quickly completed, reducing the possibility of the coil 200 being clamped to the push tube 100 after release, ensuring that the coil 200 is smoothly retained at the designated position, and the rotation of the clamping member 400 is completely completed inside the push tube 100, without occupying the space inside the blood vessel, effectively reducing the possibility of the clamping member 400 contacting the blood vessel, thereby improving the success rate of the operation.

[0049] Referring to Figure 2 and Figure 3 in some embodiments of the present invention, the clamping member 400 includes a clamping rod 420 and a clamping plate 430. The clamping rod 420 is fixed inside the push tube 100. The clamping plate 430 is rotatably connected to the clamping rod 420. One side of the clamping plate 430 is connected to the release assembly 500, and the notch 410 is provided on the other side of the clamping plate 430.

[0050] Specifically, the cross-section of the clamping rod 420 is cylindrical, its axis is perpendicular to the axis of the push tube 100, and the axis of the clamping rod 420 is located above the axis of the push tube 100. Both ends of the clamping rod 420 are fixedly connected to the inner wall of the push tube 100, and the fixing method can be bonding, welding, plugging, clamping, etc. The specific fixing method can be designed according to the production process difficulty, and the present invention does not make a limitation. The clamping plate 430 can be in the shape of "┌", and its folded corner part straddles the clamping rod 420. The inner wall of the clamping plate 430 is rotationally fitted with the clamping rod 420 to realize the rotational connection of the clamping plate 430. It should be understood that the angle of the folded corner part can also be not 90-degree angle, but set as an arc surface to facilitate the sliding fit of the clamping plate 430 and the clamping rod 420. And corresponding sliding rings can also be provided on the inner wall of the clamping plate 430, and the sliding rings are fitted with the lower side of the clamping rod 420 to limit the clamping rod 420 inside the clamping plate 430 and prevent the clamping plate 430 from disengaging from the clamping rod 420.

[0051] The notch 410 is provided on the side surface of the clamping plate 430, and the notch 410 is strip-shaped and extends to the end surface of the clamping plate 430. The side surface of the clamping plate 430 can be a plane or a curved surface. The clamping plate 430 with a curved surface can better fit the inner wall of the push tube 100 during rotation, thereby increasing the flipping angle of the clamping plate 430 to ensure that the connecting rod 210 completely slides out of the notch 410.

[0052] When the release assembly 500 drives the clamping plate 430 to rotate around the clamping rod 420, the notch 410 will gradually rotate from the vertical direction to the horizontal direction, which is equivalent to the connecting rod 210 gradually sliding out of the notch 410, thus successfully completing the release of the spring coil 200.

[0053] In some embodiments of the present invention, the clamping block 300 is a sphere. Specifically, the clamping block 300 is spherical, its diameter is larger than the size of the notch 410, and the spherical clamping block 300 has an arc-shaped outer surface. After releasing the spring coil 200, the possibility of the clamping block 300 being stuck to the clamping member 400 can be effectively reduced, thereby increasing the success rate of the operation.

[0054] Refer to Figure 3 As shown, in some embodiments of the present invention, the release assembly 500 includes a release rod 510. The distal end of the release rod 510 is movably connected to the clamping member 400, and the proximal end of the release rod 510 extends out of the push tube 100.

[0055] Specifically, the distal end of the release rod 510 is hinged to the clamping plate 430 of the clamping member 400. The hinge can be achieved through a hinge or a flexible connection part. The connection position is located at the end of the clamping plate 430 away from the clamping rod 420. The release rod 510 itself has a certain hardness and length, and a handle or a pull rope and other structures can be provided at its proximal end to facilitate the operator to operate the release rod 510.

[0056] When releasing the spring coil 200, by operating the proximal end of the release rod 510, the release rod 510 is inserted into the push tube 100, which can push the clamping plate 430 to rotate around the clamping rod 420, so that the clamping plate 430 on the side with the notch 410 is in the horizontal position, and the connecting rod 210 can smoothly slide out of the notch 410 to complete the release.

[0057] Embodiment Two

[0058] Figure 5 Shown is a schematic structural diagram of the push rod and the abutting part of the mechanical release embolization spring coil device in some embodiments of the present invention for fixing the spring coil. Figure 6 Shown is a schematic structural diagram of the push rod and the abutting part of the mechanical release embolization spring coil device in some embodiments of the present invention for releasing the spring coil. Refer to Figure 5 And Figure 6As shown, based on the first embodiment, the difference from the first embodiment is that the release component 500 includes an abutting portion 520 and a push rod 530. The abutting portion 520 partially extends into the push tube 100 and abuts against the engaging member 400. The push rod 530 is slidably connected within the push tube 100 and selectively abuts against the proximal end of the engaging member 400.

[0059] Specifically, when the clamping plate 430 faces downward, there is a certain gap between the end face of the clamping plate 430 and the inner wall of the push tube 100. The abutting portion 520 is located within this gap, and the thickness of the abutting portion 520 is greater than the thickness of this gap. At the same time, the abutting portion 520 has a certain elasticity. The upper side of the abutting portion 520 abuts against the end face of the clamping plate 430, and the lower side abuts against the inner wall of the push tube 100 to fix the position of the clamping plate 430 and at the same time can also close the notch 410. The proximal end of the abutting portion 520 extends out of the proximal end of the push tube 100 to facilitate the pulling by the operator. The specific dimensions of the abutting portion 520 can be designed according to the dimensions of the clamping plate 430. For example, the width of the abutting portion 520 can be greater than the width of the clamping plate 430, etc. The present invention does not specifically limit the dimensions of the abutting portion 520.

[0060] The push rod 530 is slidably connected within the push tube 100, and the push rod 530 is located above the abutting portion 520. The distal end face of the push rod 530 can abut against one side of the proximal end of the clamping plate 430, and the proximal end of the push rod 530 extends out of the push tube 100 for easy grasping by the operator. The push rod 530 has a certain hardness, and its material can be made of alloy. The specific material and dimensions of the push rod 530 can be designed according to the requirements of the application scenario, and the present invention does not make a limitation.

[0061] When the release of the coil 200 is required, first pull out the abutting portion 520 from the proximal end out of the push tube 100. At this time, the clamping plate 430 is in a rotatable state. Then insert the push rod 530, and use the push rod 530 to squeeze one side of the proximal end of the clamping plate 430, so that the other side of the clamping plate 430 flips towards the horizontal direction, and the connecting rod 210 can thus slide out of the notch 410 to complete the release.

[0062] In some embodiments of the present invention, the abutting portion 520 is an abutting rope. The proximal end of the abutting rope extends out of the push tube 100. Specifically, the abutting rope is woven and extends along the axial direction of the push tube 100. It can be provided with one or multiple. The specific number of the abutting ropes can be designed according to the application requirements, and the present invention does not make a limitation.

[0063] Embodiment Three

[0064] Figure 7 The figure shows a schematic structural diagram of the structure for fixing the coil in the third embodiment of the mechanical release embolization coil device in some embodiments of the present invention. Figure 8The following is a schematic structural diagram of releasing the detachable embolization coil in the third embodiment of the mechanical detachable embolization coil device according to some embodiments of the present invention. Refer to Figure 7 and Figure 8 As shown, based on the first embodiment, the difference from the first embodiment is that the release assembly 500 includes a release cap 540, a release rope 550, and an elastic member 560. The release cap 540 is slidably connected to the proximal end of the push tube 100; the proximal end of the release rope 550 is connected to the release cap 540, and the distal end of the release rope 550 is connected to the clamping member 400. The elastic member 560 is respectively connected to the clamping member 400 and the push tube 100 to limit the movement of the clamping member 400.

[0065] Specifically, the release cap 540 is coaxially arranged with the push tube 100, and the inner diameter of the release cap 540 is the same as the outer diameter of the push tube 100, that is, the distal end of the release cap 540 is sleeved on the push tube 100, and the release cap 540 can slide along the axis direction of the push tube 100. Specifically, the release cap 540 and the push tube 100 can be connected by a thread or an elastic structure such as a spring. The release rope 550 is made of a flexible material and is fixed at the middle position of the release cap 540, and the two can be fixedly connected by sewing or bonding. The distal end of the release rope 550 can be connected to the side of the clamping plate 430 away from the clamping rod 420 to facilitate pulling the clamping plate 430 to rotate. The elastic member 560 can be a spring, and the spring can be sleeved on the release rope 550, and the two ends of the spring are respectively connected to the clamping plate 430 and the inner wall of the push tube 100 to limit the rotation of the clamping plate 430. It should be understood that the elastic member 560 can also be other elastic structures, such as an elastic rod, etc., and its connection position with the clamping plate 430 can also be designed according to the actual application space as long as it can limit the rotation of the clamping plate 430, and the present invention does not make specific limitations on it.

[0066] When releasing the detachable embolization coil 200, by sliding the release cap 540, the release cap 540 moves relative to the push tube 100, the release rope 550 gradually changes from a taut state to a relaxed state, and the elastic member 560 will restore its deformation so that the clamping plate 430 automatically flips, and the connecting rod 210 will smoothly slide out of the notch 410 to complete the release.

[0067] Refer to Figure 7 and Figure 8 As shown, in some embodiments of the present invention, the release cap 540 is threadedly connected to the push tube 100. Specifically, internal threads are provided on the inner wall of the release cap 540, and external threads are provided on the outer wall of the push tube 100, and the internal threads and the external threads are meshed with each other. When moving the release cap 540, by driving the release cap 540 to rotate relative to the push tube 100, the release cap 540 can be pushed to move along the axis direction of the push tube 100.

[0068] In some embodiments of the present invention, the release component 500 further includes a connecting block 570 and a fixing block 580. The connecting block 570 is movably connected to the proximal end of the clamping member 400, and the elastic member 560 is fixedly connected to the connecting block 570. The fixing block 580 is fixed on the inner wall of the push tube 100 and fixedly connected to the proximal end of the elastic member 560.

[0069] Specifically, a hole can be formed in the proximal end of the clamping plate 430, and a hinge rod is slidably connected in the hole. The connecting block 570 is rotatably connected to the hinge rod to realize the movable connection between the connecting block 570 and the clamping plate 430. The fixing block 580 is disposed opposite to the connecting block 570, and it can be fixedly connected by means such as bonding or welding. The distal end of the release rope 550 passes through the fixing block 580 and is fixedly connected to the connecting block 570. The release rope 550 is slidably connected to the fixing block 580. The elastic member 560 is disposed between the fixing block 580 and the connecting block 570, and both ends of the elastic member 560 are fixedly connected to the fixing block 580 and the connecting block 570 respectively.

[0070] When the release rope 550 moves, the elastic member 560 automatically resets, thereby pushing the connecting block 570 to move, so that the connecting block 570 slides relative to the clamping plate 430, and the clamping plate 430 also flips a certain angle relative to the connecting block 570, so that the connecting rod 210 can smoothly slide out of the notch 410.

[0071] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, and are not intended to limit the embodiments of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A mechanical detachable embolization coil device, characterized in that The mechanical release embolization coil device includes: A push tube (100); A coil (200), arranged at the distal end of the push tube (100) and partially extending into the push tube (100); A clamping block (300), arranged at the proximal end of the coil (200); A clamping connector (400), rotatably connected to the distal end of the push tube (100), with a notch (410) on the clamping connector (400) for the clamping block (300) to slide in or out, and the cross-sectional area of the clamping block (300) is larger than that of the notch (410); and A release assembly (500), arranged inside the push tube (100) and extending out of the proximal end of the push tube (100), the release assembly (500) is connected to the clamping connector (400) to drive the clamping connector (400) to rotate, so that the clamping block (300) slides out of the notch (410) to release the coil (200); The clamping connector (400) includes: A clamping rod (420), fixed inside the push tube (100); and A clamping plate (430), rotatably connected to the clamping rod (420), one side of the clamping plate (430) is connected to the release assembly (500), and the notch (410) is arranged on the other side of the clamping plate (430); The clamping block (300) is a sphere.

2. The mechanical detachment embolization coil device according to claim 1, characterized in that, The release assembly (500) includes: A release rod (510), the distal end of the release rod (510) is movably connected to the clamping connector (400), and the proximal end of the release rod (510) extends out of the push tube (100).

3. The mechanical detachable embolization coil device according to claim 1, wherein The release assembly (500) includes: An abutting part (520), partially extending into the push tube (100) and abutting against the clamping connector (400); and A push rod (530), slidably connected inside the push tube (100) and selectively abutting against the proximal end of the clamping connector (400).

4. The mechanical detachable embolization coil device according to claim 3, wherein The abutting part (520) is an abutting rope, and the proximal end of the abutting rope extends out of the push tube (100).

5. The mechanical detachable embolization coil device according to claim 1, wherein, The release assembly (500) includes: A release cap (540), slidably connected to the proximal end of the push tube (100); A release rope (550), the proximal end of the release rope (550) is connected to the release cap (540), and the distal end of the release rope (550) is connected to the clamping connector (400); and An elastic member (560), respectively connected to the clamping connector (400) and the push tube (100) to limit the movement of the clamping connector (400).

6. The mechanical detachable embolization coil device according to claim 5, wherein, The release assembly (500) further includes: A connecting block (570), movably connected to the proximal end of the clamping connector (400), and the elastic member (560) is fixedly connected to the connecting block (570).

7. The mechanical detachable embolization coil device according to claim 5, characterized in that, The release assembly (500) further includes: A fixing block (580), fixed on the inner wall of the push tube (100) and fixedly connected to the proximal end of the elastic member (560).

8. The mechanical detachable embolization coil device according to claim 5, characterized in that, The release cap (540) is threadedly connected to the push tube (100).

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