A special auxiliary balloon for bifurcated aneurysm

Abstract

The present invention relates to the technical field of medical equipment, and in particular to a special auxiliary airbag for bifurcated aneurysms. The airbag comprises a microcatheter, a blocking mechanism and a pushing mechanism, wherein the blocking mechanism comprises an airbag, the airbag is located on the top surface of the microcatheter, and the airbag comprises a main airbag and a secondary dividing rod, the secondary dividing rod and the main airbag are arranged crosswise; the pushing mechanism comprises a slide rail, the slide rail is opened on the outside of the microcatheter; a movable connecting ring, the movable connecting ring is slidably connected to the outside of the microcatheter; a push post, the push post is located at the connection between the movable connecting ring and the airbag; a slider, the slider is fixedly connected to the inner side of the movable connecting ring, and the slider is slidably connected to the inner side of the slide rail; through the blocking mechanism and the pushing mechanism, the aneurysm opening can be blocked in a simpler way, and there is no need to worry about the escape of the spring coil, and the deployment area of ​​the airbag can be adjusted according to the different conditions of the patient, which is more flexible, and multiple push posts will not affect the blood flow in the artery.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, and in particular to a special auxiliary airbag for bifurcated aneurysm. Background Art

[0002] Intravascular coil embolization is the main treatment for intracranial aneurysms, but existing coil surgeries are expensive, have a low dense packing rate, and are relatively risky. In particular, when coils are filled into the cavity of giant aneurysms, a significant space-occupying effect will occur, compressing the surrounding nerve tissue. The compression of gravity can also easily cause occlusion of the parent artery. Especially for complex lesions such as wide-necked aneurysms, coils alone cannot achieve the desired therapeutic effect, and must be used in conjunction with stents. The support of the stent prevents the coils from falling off the cavity, which increases the difficulty of the operation and the cost of treatment. To solve the above problems, the current common method is to use a microcatheter in combination with a protective balloon. A protective balloon is placed at the front end of the microcatheter, and the expansion of the balloon is used to seal the aneurysm opening.

[0003] For example, the invention with authorization announcement number CN201811081590 discloses a stent device for closing a bifurcated aneurysm. Although the outward expansion of the closing segment can increase the adhesion to the blood vessel at the neck of the bifurcated aneurysm and prevent the stent device from falling off, and the closing structure of the closing segment can directly close the aneurysm, which is better than cross-implantation of two stents to treat bifurcated aneurysms and makes coil embolization treatment simpler, it does not solve the risk of easy escape of the coil and the problem of too cumbersome insertion. For this reason, we propose an auxiliary airbag specifically for bifurcated aneurysms. Summary of the invention

[0004] In order to overcome the shortcomings of the prior art, the present invention provides a special auxiliary airbag for bifurcated aneurysm, which can block the aneurysm opening in a simpler way without worrying about the escape of the spring coil. The deployment area of ​​the airbag can be adjusted according to the different conditions of the patient, and the flexibility is stronger. At the same time, multiple push columns will not affect the blood flow in the artery.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a special auxiliary airbag for bifurcated aneurysm, comprising a microcatheter, a blocking mechanism and a pushing mechanism, wherein the blocking mechanism comprises

[0006] An airbag, the airbag is located on the top surface of the microcatheter, and the airbag includes a main airbag and a secondary dividing rod, and the secondary dividing rod is arranged crosswise with the main airbag;

[0007] The driving agencies include

[0008] A slide rail, wherein the slide rail is arranged outside the microcatheter;

[0009] A movable connecting ring, wherein the movable connecting ring is slidably connected to the outside of the microcatheter;

[0010] A push post, the push post being located at the connection between the movable connecting ring and the airbag;

[0011] The slider is fixedly connected to the inner side of the movable connecting ring, and the slider is slidably connected to the inner side of the slide rail.

[0012] As a preferred technical solution of the present invention, the push column is arranged in a ring shape around the outer side of the movable connecting ring, four slide rails are arranged around the outer side of the microcatheter, and the number of the sliders is the same as that of the slide rails.

[0013] As a preferred technical solution of the present invention, a limiting block is hingedly connected to the surface of one side of the movable connecting ring, an inserted connecting block is fixedly connected to the bottom surface of the limiting block, a second empty groove is opened on the surface of one side of the insert connecting block, a spring is fixedly connected to the inner side of the second empty groove, a ball is fixedly connected to the other end face of the spring, a limiting groove is opened on the inner side of the slide rail, the inserted connecting block is slidably connected to the inner side of the slide rail, and one end of the ball is movably connected to the inner side of the limiting groove.

[0014] As a preferred technical solution of the present invention, a protective pad is provided on the outer side of the movable connecting ring.

[0015] As a preferred technical solution of the present invention, the ball and the spring are both mirror-imaged with the center point of the bottom end surface of the insertion connection block as the axis.

[0016] As a preferred technical solution of the present invention, it also includes an auxiliary mechanism, which includes a first empty slot, which is opened on the top surface of the limit block, a sliding slot is opened on the inner side of the first empty slot, a pulling block is movably connected to the inner side of the first empty slot, a limiting slider is fixedly connected to one side surface of the pulling block, and the limiting slider is slidably connected to the inner side of the sliding slot.

[0017] As a preferred technical solution of the present invention, auxiliary grooves are provided on both sides of the pull block, and the two auxiliary grooves are both elliptical structures.

[0018] As a preferred technical solution of the present invention, the width of the limit sliding block is 0.9 times the width of the pull block, and the number of the limit sliding blocks is two.

[0019] Compared with the prior art, the present invention can achieve the following beneficial effects:

[0020] 1. The blocking mechanism and the pushing mechanism can block the aneurysm in a simpler way without worrying about the escape of the spring coil. The deployment area of ​​the airbag can be adjusted according to the different conditions of the patient, which is more flexible. At the same time, multiple pushers will not affect the blood flow in the artery.

[0021] 2. By setting up the auxiliary mechanism, the connection between the mobile connecting ring and the slide rail can be disconnected more easily, which further facilitates the use. At the same time, when the mechanism is not needed, the pull block can be hidden in the first empty slot. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a front structural schematic diagram of the present invention;

[0023] Figure 2 It is a schematic diagram of the structure of the airbag of the present invention when viewed from above;

[0024] Figure 3 It is a schematic diagram of the structure of the microcatheter of the present invention when viewed from bottom up;

[0025] Figure 4 It is a schematic diagram of the front cross-sectional structure of the limit block of the present invention;

[0026] Figure 5 For the present invention Figure 4 A schematic diagram of the enlarged structure at A in the middle;

[0027] Among them: 1. microcatheter; 2. movable connecting ring; 3. airbag; 11. slide rail; 12. limit groove; 21. slider; 22. limit block; 23. push column; 221. first empty groove; 222. slide groove; 223. pull block; 224. limit slider; 225. auxiliary groove; 24. insert connecting block; 241. second empty groove; 242. spring; 243. ball; 31. main airbag; 32. auxiliary dividing rod. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work all belong to the protection scope of the present invention. The experimental methods in the following embodiments, unless otherwise specified, are conventional methods, and the materials, reagents, etc. used in the following embodiments, unless otherwise specified, can all be obtained from commercial channels.

[0029] Embodiment 1:

[0030] like Figure 1-Figure 3As shown, a special auxiliary airbag for bifurcated aneurysm includes a microcatheter 1, a blocking mechanism and a pushing mechanism, the blocking mechanism includes an airbag 3, the airbag 3 is located on the top surface of the microcatheter 1, and the airbag 3 includes a main airbag 31 and a secondary dividing rod 32, the secondary dividing rod 32 and the main airbag 31 are arranged crosswise; the pushing mechanism includes a slide rail 11, the slide rail 11 is opened on the outside of the microcatheter 1; the mobile connecting ring 2, the mobile connecting ring 2 is slidably connected to the outside of the microcatheter 1; the push column 23, the push column 23 is located at the connection between the mobile connecting ring 2 and the airbag 3; the slider 21, the slider 21 is fixedly connected to the inner side of the mobile connecting ring 2, and the slider 21 is slidably connected to the inner side of the slide rail 11; the push column 23 is arranged in a ring shape around the outer side of the mobile connecting ring 2, and the slide rail 11 is arranged around the outer side of the microcatheter 1. The number of the sliders 21 and the number of the slide rails 11 are the same;

[0031] After the entire device is placed in, push the mobile connecting ring 2 to allow the push column 23 to support the airbag 3, so that the airbag 3 can be unfolded and can seal the aneurysm opening, and then inflate the airbag 3 to make it swell and completely block it; the aneurysm opening can be blocked in a simpler way, and there is no need to worry about the escape of the spring coil, and the unfolding area of ​​the airbag 3 can be adjusted according to the different conditions of the patient, with greater flexibility, and multiple push columns 23 will not affect the blood flow in the artery.

[0032] In other embodiments, the present embodiment discloses, please Figure 1 , Figure 4 As shown, a limiting block 22 is hingedly connected to the surface of one side of the movable connecting ring 2, and an inserted connecting block 24 is fixedly connected to the bottom surface of the limiting block 22. A second empty groove 241 is provided on the surface of one side of the insert connecting block 24, and a spring 242 is fixedly connected to the inner side of the second empty groove 241, and a ball 243 is fixedly connected to the other end face of the spring 242. A limiting groove 12 is provided on the inner side of the slide rail 11, and the inserted connecting block 24 is slidably connected to the inner side of the slide rail 11, and one end of the ball 243 is movably connected to the inner side of the limiting groove 12; through this design, after the movable connecting ring 2 is pushed to a suitable position, the ball 243 can be inserted into the limiting groove 12, so as to achieve the purpose of limiting the position of the movable connecting ring 2, so that the stability of the movable connecting ring 2 is stronger, thereby enhancing the performance of the blocking mechanism on the side.

[0033] In other embodiments, the present embodiment discloses, please Figure 1 , Figure 3 As shown, a protective pad is provided on the outside of the mobile connecting ring 2, and anti-slip bumps are provided on the surface of the protective pad; through this design, the mobile connecting ring 2 is more convenient to use, and the friction between the outside of the mobile connecting ring 2 and the user's hand is increased, making it less likely to slip.

[0034] In other embodiments, the present embodiment discloses, please Figure 4As shown, the ball 243 and the spring 242 are mirror-set with the center point of the bottom surface of the inserted connecting block 24 as the axis, and anti-slip grooves are provided on the outside of the two balls 243; through this design, the friction between the ball 243 and the limiting groove 12 is increased, and the connection is more stable.

[0035] Embodiment 2:

[0036] In other embodiments, the present embodiment discloses, please Figure 4 , Figure 5 As shown, the auxiliary mechanism is also included, the auxiliary mechanism includes a first slot 221, the first slot 221 is provided on the top surface of the limit block 22, a slide slot 222 is provided inside the first slot 221, a pull block 223 is movably connected inside the first slot 221, a limit slider 224 is fixedly connected to one side surface of the pull block 223, and the limit slider 224 is slidably connected to the inside of the slide slot 222;

[0037] When it is necessary to pull the inserted connecting block 24 out of the slide rail 11, pull the pull block 223 upwards, let the limiting slider 224 slide in the slide groove 222 and abut against the inner top of the slide groove 222, and then continue to use force to pull out the inserted connecting block 24, which is more convenient for exerting force; the connection between the movable connecting ring 2 and the slide rail 11 can be more easily disconnected, which is further convenient for use. At the same time, when this mechanism is not needed, the pull block 223 can be hidden in the first empty groove 221.

[0038] In other embodiments, the present embodiment discloses, please Figure 4 As shown, auxiliary grooves 225 are provided on both sides of the pull block 223 , and the two auxiliary grooves 225 are both elliptical structures; this design makes it easier for the user to exert force when using the pull block 223 .

[0039] In other embodiments, the present embodiment discloses, please Figure 4-Figure 5 As shown, the width of the limit slider 224 is 0.9 times the width of the pull block 223, and the number of the limit sliders 224 is set to two; through this design, the pull block 223 and the limit slider 224 can maximize the exposed area of ​​the first slot 221, while improving the flexibility and connectivity of the pull block 223.

[0040] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A special auxiliary balloon for bifurcated aneurysm, comprising a microcatheter (1), a blocking mechanism and a pushing mechanism, characterized in that: Blocking mechanisms include An airbag (3), the airbag (3) being located on the top surface of the microcatheter (1), and the airbag (3) comprising a main airbag (31) and a secondary dividing rod (32), the secondary dividing rod (32) and the main airbag (31) being arranged crosswise; The driving agencies include A slide rail (11), wherein the slide rail (11) is arranged outside the microcatheter (1); A movable connecting ring (2), wherein the movable connecting ring (2) is slidably connected to the outside of the microcatheter (1); A push post (23), wherein the push post (23) is located at the connection between the movable connecting ring (2) and the air bag (3); A slider (21), wherein the slider (21) is fixedly connected to the inner side of the movable connecting ring (2), and the slider (21) is slidably connected to the inner side of the slide rail (11).

2. The auxiliary balloon for bifurcated aneurysm according to claim 1, characterized in that: The push column (23) is arranged in a ring shape around the outer side of the movable connecting ring (2), four slide rails (11) are arranged around the outer side of the microcatheter (1), and the number of the sliding blocks (21) is the same as that of the slide rails (11).

3. The auxiliary balloon for bifurcated aneurysm according to claim 1, characterized in that: A limit block (22) is hingedly connected to the surface of one side of the movable connection ring (2); an insertion connection block (24) is fixedly connected to the bottom surface of the limit block (22); a second slot (241) is provided on the surface of one side of the insertion connection block (24); a spring (242) is fixedly connected to the inner side of the second slot (241); a ball (243) is fixedly connected to the other end surface of the spring (242); a limit slot (12) is provided on the inner side of the slide rail (11); the insertion connection block (24) is slidably connected to the inner side of the slide rail (11); and one end of the ball (243) is movably connected to the inner side of the limit slot (12).

4. The auxiliary balloon for bifurcated aneurysm according to claim 1, characterized in that: A protective pad is arranged on the outer side of the movable connecting ring (2).

5. The auxiliary balloon for bifurcated aneurysm according to claim 3, characterized in that: The ball (243) and the spring (242) are both arranged in a mirror image with the center point of the bottom end surface of the inserted connecting block (24) as the axis.

6. The auxiliary balloon for bifurcated aneurysm according to claim 3, characterized in that: The auxiliary mechanism also includes a first empty slot (221), the first empty slot (221) is provided on the top surface of the limit block (22), a sliding slot (222) is provided inside the first empty slot (221), a pulling block (223) is movably connected inside the first empty slot (221), a limiting sliding block (224) is fixedly connected to a surface of one side of the pulling block (223), and the limiting sliding block (224) is slidably connected to the inside of the sliding slot (222).

7. The auxiliary balloon for bifurcated aneurysm according to claim 6, characterized in that: Auxiliary grooves (225) are provided on both sides of the pulling block (223), and the two auxiliary grooves (225) are both elliptical structures.

8. The auxiliary balloon for bifurcated aneurysm according to claim 6, characterized in that: The width of the limiting sliding block (224) is 0.9 times the width of the pulling block (223), and the number of the limiting sliding blocks (224) is two.

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