CN116725607B - Left auricle plugging device - Google Patents
Left auricle plugging device Download PDFInfo
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- CN116725607B CN116725607B CN202310700225.7A CN202310700225A CN116725607B CN 116725607 B CN116725607 B CN 116725607B CN 202310700225 A CN202310700225 A CN 202310700225A CN 116725607 B CN116725607 B CN 116725607B
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- 238000004873 anchoring Methods 0.000 claims description 112
- 230000003014 reinforcing effect Effects 0.000 claims description 101
- 238000007789 sealing Methods 0.000 claims description 62
- 230000007246 mechanism Effects 0.000 claims description 50
- 210000005248 left atrial appendage Anatomy 0.000 claims description 29
- 238000005728 strengthening Methods 0.000 claims description 25
- 230000008602 contraction Effects 0.000 claims description 20
- 230000002787 reinforcement Effects 0.000 claims description 15
- 230000000670 limiting effect Effects 0.000 claims description 13
- 230000017531 blood circulation Effects 0.000 claims description 12
- 239000008280 blood Substances 0.000 claims description 5
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- 235000017166 Bambusa arundinacea Nutrition 0.000 claims 3
- 235000017491 Bambusa tulda Nutrition 0.000 claims 3
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- 235000015334 Phyllostachys viridis Nutrition 0.000 claims 3
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- 230000006870 function Effects 0.000 description 5
- 230000001965 increasing effect Effects 0.000 description 5
- 230000001360 synchronised effect Effects 0.000 description 4
- 210000005246 left atrium Anatomy 0.000 description 3
- 206010003658 Atrial Fibrillation Diseases 0.000 description 2
- 208000007536 Thrombosis Diseases 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000009954 braiding Methods 0.000 description 2
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- 238000004806 packaging method and process Methods 0.000 description 1
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Abstract
The invention belongs to the technical field of left auricle plugging, and provides a left auricle plugging device which is used for plugging a left auricle.
Description
Technical Field
The invention belongs to the technical field of left auricle plugging, and particularly relates to a left auricle plugging device.
Background
Atrial fibrillation (atrial fibrillation) is one of the clinically common arrhythmias, the incidence rate of which increases with age, is an important risk factor for thromboembolism, and about 90% of left atrial thrombi originate from the left auricle, so for patients with anticoagulation contraindication or bleeding risks greater than that of benefit, left auricle occlusion may be a meaningful choice for preventing related embolic diseases caused by left auricle thrombi, and currently left auricle occluders can be generally classified into woven type, cut type and mixed type, and these left auricle occluders can all be used for delivering the occluder into the left auricle by catheter intervention to realize left auricle occlusion.
The prior patent application number is: 2022115940762 discloses a novel left atrial appendage occlusion device and an unfolding method, wherein the novel left atrial appendage occlusion device comprises an occlusion disc for occluding, an anchoring cup for anchoring the position of the left atrial appendage occlusion device and a connecting rib for connecting the anchoring cup and the occlusion disc, the anchoring cup is of a hemispherical double-layer structure and comprises an outer shrinkage anchoring layer and an inner supporting layer, the distal end of the shrinkage anchoring layer is converged through a distal bundling tube, the proximal end of the supporting layer is connected with the proximal end of the shrinkage anchoring layer, the distal end is connected with the connecting rib, the weaving density at the joint of the shrinkage anchoring layer and the proximal end of the supporting layer is greater than that of the shrinkage anchoring layer and the supporting layer, and an anchor hook with the end part protruding out of the surface of the shrinkage anchoring layer is arranged on the shrinkage anchoring layer; according to the invention, the anchoring cup with a double-layer structure is used, the anchoring cup is matched with an anchor hook, the left atrial appendage wall with different inner diameters can be adapted, the plugging disc can be tightly attached to the left atrial appendage opening, after the technical scheme and the existing common left atrial appendage packaging devices are analyzed, the plugging device is mounted on the left atrial appendage, the endocardium can gradually cover the plugging device into a whole in half a year, so that a long-term stable plugging effect is achieved, the plugging device can be continuously impacted by thrombus in the process of growing the endocardium and the plugging device into a whole, the stability of the plugging device is in a gradually fixed state, the plugging device is very easy to loosen, the position of the plugging device is offset or loose, the sealing property of plugging of the plugging device is influenced, the plugging failure is caused, and the existing plugging device has no corresponding effective treatment and preventive measures for the problems;
Therefore, in view of the above-mentioned problems, the present technical solution proposes a left atrial appendage occlusion device.
Disclosure of Invention
The embodiment of the invention aims to provide a left auricle occluder and aims to solve the problems.
The invention is realized in such a way that the left atrial appendage occlusion device comprises an occlusion disc for occluding the left atrial appendage, the occlusion disc comprises an outer contraction anchoring layer and an inner supporting layer, the supporting layer is arranged at the inner side of the contraction anchoring layer, a space in which the contraction anchoring layer is compressed and deformed is formed between the contraction anchoring layer and the supporting layer, the supporting layer and the contraction anchoring layer are synchronously contracted, the inside of the contraction anchoring layer is automatically supported after the contraction anchoring layer is expanded, the middle part of one end of the outer part of the contraction anchoring layer is connected with a connecting bundling tube which is used for controlling the contraction anchoring layer to contract, the end part of the supporting layer, which is close to one side of the connecting bundling tube, is fixedly connected with the contraction anchoring layer, the middle part of the other end of the supporting layer is connected with a connecting rib tube, one end, which is connected with the supporting layer, passes through the supporting layer and is communicated with the inside of the contraction anchoring layer, the end, which is far away from the contraction anchoring layer, of the connecting rib tube is telescopically sheathed with an axial reinforcing disc, the connection of the connecting rib tube is utilized to keep the synchronous bundling of the axial reinforcing disc and the shrinkage anchoring layer, a circle of anchor ring is arranged on the circumferential side wall of the axial reinforcing disc, when the axial reinforcing disc is unfolded in the left auricle, the anchor ring is utilized to contact with the auricle wall of the left auricle to reinforce the plugging disc, at the moment, the axial reinforcing disc is connected with the supporting layer in a telescopic sleeved mode through the connecting rib tube, but because the anchor ring is tightly clamped into the auricle wall of the left auricle, the axial reinforcing disc is in a static state at the moment, the center of one side of the axial reinforcing disc, which faces the connecting rib tube, is connected with an axial movement reinforcing mechanism which is arranged at the center of one side of the shrinkage anchoring layer, which is close to the connecting bundling tube, the axial movement reinforcing mechanism is used for driving the axial reinforcing disc to axially move along the direction facing the shrinkage anchoring layer and is matched with the anchor ring on the axial reinforcing disc to increase the clamping force between the anchor ring and the auricle wall of the left auricle, the sealing elastic plugging device is characterized in that a sealing elastic plugging ring is arranged at one end of the shrinkage anchoring layer, which is far away from the axial strengthening disc, the sealing elastic plugging ring is bundled along with the shrinkage anchoring layer, after the shrinkage anchoring layer is unfolded, the sealing elastic plugging ring is kept in full contact with the inner wall of the left auricle in real time by utilizing the elastic action of the sealing elastic plugging ring, the left auricle spaces at the two sides of the sealing elastic plugging ring are sealed and separated to form a plugging block, a plurality of groups of annular distributed radial strengthening blocks are radially and movably arranged on the shrinkage anchoring layer, which is positioned on one side of the sealing elastic plugging ring, which is close to a connecting bundling pipe, the radial strengthening blocks are connected with a radial movement strengthening mechanism towards one side of the center of the shrinkage anchoring layer, the radial movement strengthening mechanism is used for controlling the radial strengthening blocks to move towards the direction far away from the center of the shrinkage anchoring layer, then the clamping force between the end parts of the radial strengthening blocks and the left auricle wall is enhanced, the axial strengthening disc at the two sides of the sealing elastic plugging ring is respectively enhanced in contact strength between the axial strengthening disc and the left auricle wall of the radial strengthening block by the radial movement strengthening mechanism, the sealing elastic plugging ring is kept stable by the sealing elastic plugging ring, the radial movement strengthening mechanism and the axial movement strengthening mechanism is connected with a group of blood flow driving mechanism jointly in contact with the axial movement strengthening mechanism, and the radial movement strengthening mechanism is used for producing a thrust force to move to control and then to synchronously move and impact strengthening mechanism.
Wherein, after placing the shutoff dish inside the left auricle in, utilize to connect the bundling pipe and expand shrink the anchoring layer, the supporting layer supports in shrink the anchoring layer inboard simultaneously, the synchronous expansion of axial reinforcement dish is to the partial interior region of left auricle, this moment sealed elastic shutoff ring utilizes its elasticity expansion property, sealed elastic shutoff ring circumference lateral wall and left auricle wall fully contact, form the shutoff to left auricle, radial reinforcement piece, axial reinforcement dish is synchronous with the left auricle wall contact of correspondence, radial reinforcement piece and the perpendicular joint of left auricle wall class, anchor ring and left auricle wall slope anchor on the axial reinforcement dish, the cooperation is with the stable fixing of shutoff dish in left auricle jointly, when the shutoff dish and endocardial growth cover period, the outside of left auricle department produces the impact thrust to shrink the anchoring layer, the radial movement reinforcing mechanism and the axial movement reinforcing mechanism operation of control and that are connected, radial reinforcement piece is along the radial outward movement of shrink anchoring layer, and axial reinforcement dish is close to connecting pipe one side along shrink the left auricle wall axial direction, thereby increase radial reinforcement piece and left auricle wall and the perpendicular joint of left auricle wall, the radial reinforcement of sealing force is realized between the sealing disk and the left auricle, the sealing force is improved in the sealing force is realized in the sealing of the sealing disk and the left auricle, the sealing force is improved between the sealing disk and the left auricle and the sealing disk.
According to the left auricle plugging device, on the basis of the existing plugging device, the plurality of pressure holes are formed in one side of the shrinkage anchoring layer, the buffer blocks capable of moving under force are arranged in the pressure holes, the radial reinforcing blocks capable of moving radially on the shrinkage anchoring layer are respectively controlled to move outwards by utilizing the structural characteristics of the buffer blocks, the axial reinforcing disc connected with the other end of the shrinkage anchoring layer and moving axially towards one side of the connecting bundling tube is controlled to move towards one side of the axial reinforcing disc, then the elastic sealing function of the sealing elastic sealing ring is matched, when the sealing disc is impacted by blood flow after being installed in the left auricle, the radial reinforcing blocks are continuously controlled to move outwards by utilizing thrust generated by the impact, the contact connection strength between the radial reinforcing blocks and the left auricle wall is enhanced, and the anchoring strength between an anchor ring on the axial reinforcing disc and the left auricle wall is synchronously controlled, so that the plugging stability of the sealing disc and the left auricle is fully enhanced.
Drawings
Fig. 1 is a schematic perspective view of a left atrial appendage occlusion device.
Fig. 2 is a schematic diagram of the external structure of the left atrial appendage occlusion device in front view.
Fig. 3 is a schematic diagram of the internal structure of a left atrial appendage closure in front view.
Fig. 4 is a schematic side view of a left atrial appendage occlusion device.
Fig. 5 is a schematic view of a partial connection structure between a buffer block and a pressure hole in a left atrial appendage occlusion device.
Fig. 6 is a schematic structural diagram of a in fig. 3.
Fig. 7 is a schematic diagram of the structure of fig. 3B.
Fig. 8 is a schematic structural view of C in fig. 3.
Fig. 9 is a schematic diagram of the structure of fig. 3D.
In the accompanying drawings: the sealing disc 10, the connecting bundling tube 11, the shrinkage anchoring layer 12, the supporting layer 13, the axial reinforcing disc 14, the anchor ring 15, the connecting rib cylinder 16, the pressure hole 17, the buffer block 18, the elastic connecting band I19, the first connecting rod 20, the radial reinforcing block 21, the elastic connecting band II 22, the reinforcing protruding block 23, the radial pushing block 25, the swinging rod 26, the limiting cylinder 27, the limiting rod 28, the rotating shaft 29, the second connecting rod 30, the axial moving rod 31, the sliding block 32, the branch connecting band 33, the main connecting band 34, the connecting sleeve 35, the sliding ring 36, the second sliding groove 37 and the sealing elastic sealing ring 38.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Specific implementations of the invention are described in detail below in connection with specific embodiments.
As shown in fig. 1-4, a structure diagram of a left atrial appendage occlusion device provided by the embodiment of the invention comprises an occlusion disk 10 for occluding a left atrial appendage, the occlusion disk 10 comprises an outer shrinkage anchoring layer 12 and an inner supporting layer 13, the supporting layer 13 is arranged at the inner side of the shrinkage anchoring layer 12, a space in which the shrinkage anchoring layer 12 is compressed and deformed is formed between the shrinkage anchoring layer 12 and the supporting layer 13, the supporting layer 13 and the shrinkage anchoring layer 12 are synchronously contracted, the inside of the shrinkage anchoring layer 12 is automatically supported after the shrinkage anchoring layer 12 is expanded, a connecting bundling tube 11 is connected at the middle part of one end of the outside of the shrinkage anchoring layer 12, the connecting bundling tube 11 is used for controlling the shrinkage anchoring layer 12 to contract, the end part of the supporting layer 13 close to one side of the connecting bundling tube 11 is fixedly connected with the shrinkage anchoring layer 12, a connecting rib tube 16 is connected at the middle part of the other end of the supporting layer 13, the end of the connecting rib cylinder 16 connected with the supporting layer 13 passes through the supporting layer 13 and is communicated with the inside of the shrinkage anchoring layer 12, the telescopic sleeve at the end of the connecting rib cylinder 16 far away from the shrinkage anchoring layer 12 is provided with an axial reinforcing disc 14, the synchronous retraction of the axial reinforcing disc 14 and the shrinkage anchoring layer 12 is kept by the connection of the connecting rib cylinder 16, the circumferential side wall of the axial reinforcing disc 14 is provided with a ring of anchor ring 15, when the axial reinforcing disc 14 is unfolded in the left auricle, the blocking disc 10 is reinforced by the contact of the anchor ring 15 and the auricle wall of the left auricle, at the moment, the axial reinforcing disc 14 is connected with the telescopic sleeve of the supporting layer 13 through the connecting rib cylinder 16, at the moment, the axial reinforcing disc 14 is in a static state, the center of one side of the axial reinforcing disc 14 towards the connecting rib cylinder 16 is connected with an axial moving reinforcing mechanism arranged at the center of one side of the shrinkage anchoring layer 12 near the connecting bundling tube 11, the axial movement reinforcing mechanism is used for driving the axial reinforcing disc 14 to axially move along the direction towards the shrinkage anchoring layer 12, the force of clamping between the anchor ring 15 and the left auricle wall is increased by matching with the anchor ring 15 on the axial reinforcing disc 14, the sealing elastic blocking ring 38 is installed at one end of the shrinkage anchoring layer 12 far away from the axial reinforcing disc 14, the sealing elastic blocking ring 38 is retracted along the shrinkage anchoring layer 12, after the shrinkage anchoring layer 12 is unfolded, the sealing elastic blocking ring 38 is utilized to keep the sealing elastic blocking ring 38 to fully contact with the inner wall of the left auricle in real time, left auricle spaces at two sides of the sealing elastic blocking ring are sealed and separated to form a blocking, a plurality of groups of annular distributed radial reinforcing blocks 21 are radially arranged on the shrinkage anchoring layer 12 which is positioned at one side of the sealing elastic blocking ring 38 close to the connecting bundling tube 11, the radial reinforcing blocks 21 are connected with the radial movement reinforcing mechanism towards one side of the center of the shrinkage anchoring layer 12, the radial movement reinforcing mechanism is used for controlling the radial reinforcing blocks 21 to move towards the direction far away from the center of the shrinkage anchoring layer 12, then the clamping between the end of the radial reinforcing blocks 21 and the left auricle wall is reinforced, the sealing elastic blocking ring is enabled to be in real time under the elastic action of the sealing elastic blocking ring 38, the sealing elastic blocking ring is enabled to directly contact with the inner wall of the left auricle in real time, the left auricle space is fully contacted with the axial movement reinforcing mechanism is enabled to form a sealing force, and then the sealing elastic blocking ring is enabled to axially move along with the axial movement blocking ring is enabled to move along with the sealing ring, and the sealing ring is controlled, and the sealing elastic blocking mechanism is contacted with the sealing elastic blocking ring is driven by the sealing ring and the sealing ring.
Wherein after the sealing disk 10 is placed inside the left atrial appendage, the shrinkage anchoring layer 12 is deployed by means of the connecting bundling tube 11, simultaneously, the supporting layer 13 is supported on the inner side of the contraction anchoring layer 12, the axial reinforcing disc 14 is synchronously unfolded to the inner part of the left auricle, at the moment, the sealing elastic blocking ring 38 fully contacts the circumferential side wall of the sealing elastic blocking ring 38 with the wall of the left auricle by utilizing the elastic expansion performance, the left auricle is blocked, the radial reinforcing block 21 and the axial reinforcing disc 14 are synchronously contacted with the corresponding left auricle wall, the radial reinforcing block 21 is vertically clamped with the left auricle wall, the anchor ring 15 on the axial reinforcing disc 14 is obliquely anchored with the left auricle wall, the blocking disc 10 is stably fixed in the left auricle in a matched manner, during the covering of the occlusion disk 10 with endocardial growth, blood flow at the left atrium produces an impact thrust on the outside of the contracting anchoring layer 12, the blood flow driving mechanism synchronously controls the operation of the radial movement reinforcement mechanism and the axial movement reinforcement mechanism which are connected with the blood flow driving mechanism, controls the radial reinforcement block 21 to move radially outwards along the shrinkage anchoring layer 12, and the axial reinforcing disc 14 moves along the shrink anchor layer 12 axially toward the side of the connection cluster tube 11, thereby increasing the force of the radial clamping of the radial reinforcing block 21 with the left auricle wall and the force of the axial embedding between the anchor ring 15 on the axial reinforcing disc 14 and the left auricle wall, thereby reinforcing the sealing elastic occlusion ring 38 on both sides together, enhancing the stability of the sealing elastic occlusion ring 38 with the left atrial appendage sealing occlusion, ensuring that during the growth of the endocardium and occlusion disk 10, when being impacted by thrombus flow, the connection between the plugging disc 10 and the left auricle is more stable, so that the function of automatically reinforcing the plugging stability of the plugging disc 10 in the left auricle is realized.
In the embodiment of the invention, the braiding density of the contraction anchoring layer 12 and the supporting layer 13 near the joint of one side of the connecting bundling tube 11 is larger than the braiding density of the contraction anchoring layer 12 and the other side of the supporting layer 13, namely, the contraction anchoring layer 12 can be ensured to be stably and easily opened and closed when being bundled; the structure of each position in the plugging device adopts a process of integrally knitting and forming, so that the complexity of the process can be fully reduced, the deformation capacity can be flexibly controlled through the knitting density, the processes of welding and the like are avoided, meanwhile, the plugging disc 10 is knitted by super-elastic memory alloy wires, and meanwhile, the required shape is formed by a heat setting mode, and the structure of each position, the material of the part and the forming mode belong to the prior art and are not repeated here;
One end of the connecting bundling pipe 11 far away from the shrinkage anchoring layer 12 is connected with a hollow conduit which is used for conveying the plugging disc 10, releasing contrast agent and other functions, a cable is arranged in the conduit and is detachably connected with the middle part of the outer side of the shrinkage anchoring layer 12, and the cable is mainly used for controlling the shrinkage of the shrinkage anchoring layer 12;
specifically, the radial reinforcing blocks 21 are provided with reinforcing convex blocks 23 uniformly distributed on the circumferential outer side wall, the end parts of the reinforcing convex blocks 23 are in an arc-shaped structure, the reinforcing convex blocks 23 are tightly contacted with the left auricle wall, meanwhile, the arc-shaped structure is utilized to reduce the damage to the left auricle wall, and similarly, the end parts of the anchor ring 15, which are contacted with the left auricle wall, are also in an arc-shaped structure, so that the tight contact with the left auricle wall is ensured, and meanwhile, the damage to the left auricle wall is prevented;
Because the radial reinforcing blocks 21 can radially move when driven by the radial reinforcing mechanism, at the moment, the elastic connecting bands II 22 are connected between the adjacent radial reinforcing blocks 21, the elastic connecting bands II 22 have a certain elastic function, and simultaneously have a sealing function, and when radial movements of different distances occur between the adjacent radial reinforcing blocks 21, the elastic connecting bands II 22 synchronously stretch along with the radial movements, so that the connection integrity among the plurality of shrinkage anchoring layers 12 is maintained; when the radial reinforcing block 21 moves radially inside and outside the shrinkage anchoring layer 12, in order to prevent blood outside from entering the inside of the shrinkage anchoring layer 12 along the gap between the radial reinforcing block 21 and the shrinkage anchoring layer 12, sealing gaskets are arranged on the contact two sides of the radial reinforcing block 21 and the shrinkage anchoring layer 12, and the sealing gaskets are used for fully preventing external blood from entering the inside of the shrinkage anchoring layer 12 along the contact gap between the radial reinforcing block 21 and the shrinkage anchoring layer 12, and meanwhile, the movement of the radial reinforcing block 21 in the radial reinforcing block 21 is not influenced.
Referring to fig. 5-6, in an example of the present invention, the blood flow driving mechanism includes a pressure hole 17 formed on the outer side wall of the shrinkage and anchoring layer 12 at one side of the connection bundling tube 11, the pressure hole 17 is uniformly distributed in the outer side wall of the shrinkage and anchoring layer 12 in a ring shape, the inside of the pressure hole 17 is elastically connected with a buffer block 18 with an L-like structure through an elastic connection belt i 19, the buffer block 18 is formed by fixedly connecting an inclined surface with a vertical surface, under the connection of the elastic connection belt i 19, when the blood flow at the outer side of the shrinkage and anchoring layer 12 generates thrust to the buffer block 18, the elastic connection belt i 19 synchronously stretches, the buffer block 18 moves towards the inner side of the pressure hole 17 along with the movement of the inclined surface, the movement of the vertical surface generates thrust along the radial direction of the shrinkage and anchoring layer 12, the upper inclined surface side of the buffer block 18 is in contact with the radial direction strengthening mechanism, and the upper vertical surface side of the buffer block 18 is in contact with the axial contact mechanism, namely the buffer block 18 is used for synchronously driving the radial movement strengthening mechanism to operate with the axial movement strengthening mechanism;
It is worth noting that, since the radial reinforcing block 21 is fully contacted with the left auricle wall through the reinforcing convex block 23, the axial reinforcing disc 14 is fully contacted and fixed with the left auricle wall through the anchor ring 15, and when the radial moving reinforcing mechanism and the axial moving reinforcing mechanism operate each time, the connecting stability between the reinforcing convex block 23 and the anchor ring 15 and the left auricle wall is enhanced, even if the elastic connecting belt I19 drives the buffer block 18 to move back under the resilience force, the buffer block 18 and the radial moving reinforcing mechanism operate and the axial moving reinforcing mechanism are in contact connection, the corresponding driving movement of the reinforcing convex block 23 and the anchor ring 15 cannot move back along with the radial moving reinforcing mechanism, and on the contrary, the impact thrust of the blood flow to the buffer block 18 is continuously increased, so that the connecting stability between the reinforcing convex block 23, the anchor ring 15 and the left auricle wall can be fully ensured, and the left auricle can be blocked and stabilized during the covering growth of the sealing disc 10 by the endocardium.
The radial reinforcing mechanism comprises a radial pushing block 25 connected with the inclined surface of the buffer block 18 in a contact manner, the radial pushing block 25 is connected with a first connecting rod 20 towards the radial direction of the shrinkage anchoring layer 12, the end part of the first connecting rod 20 is fixedly connected with a radial reinforcing block 21, when the inclined surface of the buffer block 18 moves, the radial pushing block 25 is continuously pushed to drive the first connecting rod 20 to move radially outwards, and then the reinforcing protruding block 23 on the radial reinforcing block 21 is synchronously pushed to contact and extrude with the left auricle wall, so that the connecting force of the radial reinforcing block 21 and the left auricle wall is increased;
Referring to fig. 7-8, the axial strengthening mechanism includes a swinging rod 26 connected to the vertical surface of the buffer block 18 in a contact manner, the middle part of the swinging rod 26 is rotatably disposed in the end of the shrinkage anchoring layer 12 through a rotation shaft 29, one end of the swinging rod 26 far away from the buffer block 18 is rotatably connected with an axial moving rod 31 through a second axial connecting rod 30, the axial moving rod 31 is disposed at the connection position of the connecting rib cylinder 16 and the shrinkage anchoring layer 12, a main connecting belt 34 is movably disposed in the connecting rib cylinder 16, one end of the main connecting belt 34 facing the connecting cluster tube 11 is respectively connected with a plurality of axial moving rods 31 through branch connecting belts 33, a sliding block 32 is mounted at the top of the axial moving rod 31, the sliding block 32 is axially slidably connected in a first sliding groove formed in the inner wall of the connection position of the connecting rib cylinder 16 and the shrinkage anchoring layer 12, the other end of the main connecting belt 34 is connected with a stretching assembly, when the swinging rod 26 receives thrust force facing one side of the buffer block 18, the other end of the swinging rod 26 is driven to move towards one side of the connecting cluster tube 11 by rotation of the rotation shaft 29, then the connection of the second axial moving rod 30 and the axial moving rod 31 are matched with one side of the connecting rod 30, the main connecting rod 34 is controlled to move towards one side of the connecting cluster tube 11, and then the stretching assembly is driven by the main connecting flange 14 to move towards one side of the connecting flange 11, and the axial connecting flange 15 is driven by the main connecting flange 14 to move the connecting flange 14;
Specifically, in order to ensure that the buffer block 18 can stably move when being pushed, a limiting cylinder 27 is connected to one side of the buffer block 18 facing the inside of the pressure hole 17, a limiting rod 28 is connected to the inside of the limiting cylinder 27 in a telescopic manner, one end of the limiting rod 28 is fixed to the inner end wall of the pressure hole 17, and the limiting rod 28 stretches and contracts inside the limiting cylinder 27 to keep the buffer block 18 stably moving.
Referring to fig. 9, specifically, the stretching assembly includes a connecting sleeve 35 sleeved at the end of the connecting rib tube 16, the connecting sleeve 35 is fixedly installed at the center of the side wall of the axial reinforcing disc 14, one end of the main connecting belt 34 is connected at the center of the connecting sleeve 35, that is, the main connecting belt 34 stretches, the connecting sleeve 35 is controlled to move along the end of the connecting rib tube 16, then the axial reinforcing disc 14 is synchronously driven to move towards one side of the connecting cluster tube 11, a sliding ring 36 is installed on the inner wall of the connecting sleeve 35, a second sliding groove 37 is formed in the outer side wall of the connecting rib tube 16 corresponding to the sliding ring 36, and the sliding ring 36 moves axially along the pressure hole 17, so that the connecting sleeve 35 is kept to be stably sleeved on the connecting rib tube 16.
The embodiment of the invention provides a left atrial appendage occlusion device, which is used as follows: (1) Firstly, the left atrium is accessed by a catheter, then the left atrium is moved into the left auricle, at the moment, contrast agent is released by the catheter, and the space size and shape of the left auricle are observed by X rays;
(2) According to the size of the left auricle measured by observation, the plugging disc 10 is conveyed into the left auricle through a guide pipe, the guide pipe is separated, a shrinkage anchoring layer 12 in the plugging disc 10 is unfolded, a supporting layer 13 supports the shrinkage anchoring layer 12, a sealing elastic plugging ring 38, an axial reinforcing disc 14 and a radial reinforcing block 21 are kept in contact with the wall of the left auricle at the corresponding position, a sealing plug is formed at the sealing elastic plugging ring 38, a reinforcing lug 23 on the radial reinforcing block 21 is stably clamped with the wall of the left auricle, an anchor ring 15 on the axial reinforcing disc 14 is anchored with the wall of the left auricle, and then a cable on a connecting bundling pipe 11 is withdrawn;
(3) At this time, the left auricle is plugged by the plugging disc 10, in the following process, the plugging disc 10 is continuously covered by the endocardium, in the process, flowing blood continuously impacts one side of the shrinkage anchoring layer 12, thrust is generated on the buffer block 18 in the pressure hole 17, at this time, when the inclined surface on the buffer block 18 and the vertical surface synchronously receive thrust movement, the radial push block 25 is continuously pushed to drive the connecting rod one 20 to move radially outwards, then the reinforcing convex block 23 on the radial reinforcing block 21 is synchronously pushed to contact and squeeze the wall of the left auricle, when the vertical surface on the buffer block 18 moves, the swinging rod 26 is pushed towards one side of the buffer block 18, the other end of the swinging rod 26 is driven to move towards one side of the connecting bundling tube 11 by utilizing the rotation of the rotating shaft 29, then the connecting rod two 30 are matched with the connection of the axial moving rod 31, the main connecting belt 34 is controlled to move towards one side of the connecting bundling tube 11, then the connecting sleeve 35 is driven by the main connecting belt 34 to move towards one side of the connecting bundling tube 11 along the connecting rib cylinder 16, and the strength of connection between the anchor ring 15 and the wall is further increased, when the shrinkage anchoring layer 12 receives the impact force on the side of the shrinkage anchoring layer 12, the blood is further, and the plugging disc 10 can be firmly plugged until the plugging disc is completely covered by the left auricle 10.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (9)
1. The utility model provides a left auricle plugging device, includes plugging disc (10) that are used for carrying out the shutoff to left auricle, and plugging disc (10) are including outer shrink anchor layer (12) and inlayer supporting layer (13), and supporting layer (13) set up in shrink anchor layer (12) inboard, form shrink anchor layer (12) between shrink anchor layer (12) and supporting layer (13) and be compressed and warp space, and supporting layer (13) are received with shrink anchor layer (12) in step, shrink anchor layer (12) outside one end middle part is connected with and link up pipe (11), supporting layer (13) are close to the tip of being connected one side of link up pipe (11) and shrink anchor layer (12) are linked firmly, characterized in that, supporting layer (13) other end middle part is connected with connecting rib section of thick bamboo (16), and the one end that supporting layer (13) are connected with connecting rib section of thick bamboo (16) is passed supporting layer (13) and is connected with shrink anchor layer (12) inside, and the one end that connecting rib section of thick bamboo (16) kept away from shrink anchor layer (12) is flexible has axial reinforcement dish (14), axial reinforcement dish (14) is installed one circumferential anchor ring (15) on the circumference and is equipped with;
The axial movement reinforcing mechanism is arranged at the center of one side of the shrinkage anchoring layer (12) close to the connecting bundling pipe (11), and is used for driving the axial reinforcing plate (14) to axially move along the direction facing the shrinkage anchoring layer (12); the sealing elastic plugging ring (38) is installed at one end, far away from the axial reinforcing disc (14), of the shrinkage anchoring layer (12), the sealing elastic plugging ring (38) is converged along with the shrinkage anchoring layer (12), a plurality of groups of annular distributed radial reinforcing blocks (21) are radially and movably arranged on the shrinkage anchoring layer (12) which is positioned at one side, close to the connecting bundling tube (11), of the sealing elastic plugging ring (38), one side, facing the center of the shrinkage anchoring layer (12), of the radial reinforcing blocks (21) is connected with a radial moving reinforcing mechanism, and the radial moving reinforcing mechanism is used for controlling the radial reinforcing blocks (21) to move towards the direction far away from the center of the shrinkage anchoring layer (12); the radial movement strengthening mechanism and the axial movement strengthening mechanism are connected together in a contact mode, a group of blood flow driving mechanisms are connected together, blood flows on one side of the shrinkage anchoring layer (12) through the blood, thrust is generated by impacting the shrinkage anchoring layer, and then the radial movement strengthening mechanism and the axial movement strengthening mechanism are synchronously controlled to operate.
2. A left atrial appendage occlusion device according to claim 1, wherein the radial stiffening blocks (21) are provided with evenly distributed stiffening protrusions (23) on their circumferential outer side wall, the ends of the stiffening protrusions (23) being arranged in an arc-shaped configuration, the ends of the anchor ring (15) contacting the left atrial appendage wall also being arranged in an arc-shaped configuration.
3. A left atrial appendage occlusion device according to claim 2, wherein an elastic connecting band ii (22) is connected between adjacent radial stiffening blocks (21), said radial stiffening blocks (21) being provided with sealing gaskets on both sides in contact with the contracting anchoring layer (12).
4. A left atrial appendage occlusion device according to claim 3, wherein the blood flow driving mechanism comprises a pressure hole (17) formed in an outer side wall of the contraction anchoring layer (12) at one side of the connection bundling tube (11), the pressure hole (17) is uniformly distributed in the outer side wall of the contraction anchoring layer (12) in a ring shape, a buffer block (18) with an L-shaped structure is elastically connected to the inside of the pressure hole (17) through an elastic connecting belt (19), the buffer block (18) is formed by fixedly connecting an inclined surface with a vertical surface, when the blood flow at the outer side of the contraction anchoring layer (12) generates thrust to the buffer block (18) under the connection of the elastic connecting belt (19), the elastic connecting belt (19) stretches synchronously, the buffer block (18) moves towards the inner side of the pressure hole (17) along with the time, the inclined surface moves to generate thrust along the radial direction of the contraction anchoring layer (12), one side of the inclined surface on the buffer block (18) is in contact with the radial reinforcing mechanism, and one side of the buffer block (18) is in contact with the radial reinforcing mechanism, and moves synchronously with the axial reinforcing mechanism.
5. The left atrial appendage occlusion device of claim 4, wherein the radial stiffening mechanism comprises a radial push block (25) connected with the buffer block (18) in an inclined surface contact manner, the radial push block (25) is connected with a first connecting rod (20) towards the radial direction of the contracted anchoring layer (12), and the end of the first connecting rod (20) is fixedly connected with the radial stiffening block (21).
6. The left atrial appendage occlusion device of claim 5, wherein the axial strengthening mechanism comprises a swinging rod (26) connected with the buffer block (18) in a contact manner, the middle part of the swinging rod (26) is rotatably arranged inside the end of the shrinkage anchoring layer (12) through a rotating shaft (29), one end of the swinging rod (26) far away from the buffer block (18) is rotatably connected with an axial moving rod (31) through a second axial connecting rod (30), the axial moving rod (31) is arranged at the communication position of the connecting rib cylinder (16) and the shrinkage anchoring layer (12), a main connecting belt (34) is movably arranged inside the connecting rib cylinder (16), one end of the main connecting belt (34) facing the connecting bundling tube (11) is respectively connected with the plurality of axial moving rods (31) through branch connecting belts (33), a sliding block (32) is arranged at the top of the axial moving rod (31), the sliding block (32) is axially slidably connected in a first sliding groove formed in the inner wall of the communication position of the connecting rib cylinder (16) and the shrinkage anchoring layer (12), and the other end of the main connecting belt (34) is connected with the stretching assembly.
7. The left atrial appendage occlusion device of claim 6, wherein a side of the buffer block (18) facing the interior of the pressure hole (17) is connected with a limiting cylinder (27), the interior of the limiting cylinder (27) is connected with a limiting rod (28) in a telescopic manner, and one end of the limiting rod (28) is fixed on the inner end wall of the pressure hole (17).
8. The left atrial appendage occlusion device of claim 7, wherein the tension assembly comprises a connector sleeve (35) sleeved on the end of the connector barrel (16), the connector sleeve (35) is fixedly mounted at the center of the side wall of the axial reinforcement disc (14), and one end of the main connector belt (34) is connected at the center of the connector sleeve (35).
9. The left atrial appendage occlusion device of claim 8, wherein a sliding ring (36) is mounted on the inner wall of the connecting sleeve (35), a second chute (37) is formed in the outer side wall of the connecting rib barrel (16) corresponding to the sliding ring (36), and the sliding ring (36) moves axially along the pressure hole (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310700225.7A CN116725607B (en) | 2023-06-14 | 2023-06-14 | Left auricle plugging device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310700225.7A CN116725607B (en) | 2023-06-14 | 2023-06-14 | Left auricle plugging device |
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| CN116725607A CN116725607A (en) | 2023-09-12 |
| CN116725607B true CN116725607B (en) | 2024-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310700225.7A Active CN116725607B (en) | 2023-06-14 | 2023-06-14 | Left auricle plugging device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN210990532U (en) * | 2020-05-13 | 2020-07-14 | 上海介入医疗器械有限公司 | Left auricle plugging device |
| CN112022246A (en) * | 2020-11-06 | 2020-12-04 | 上海介入医疗器械有限公司 | Left auricle occluder and use method thereof |
| CN114025690A (en) * | 2019-06-17 | 2022-02-08 | 科赫里克斯医疗股份有限公司 | Medical devices and systems for occluding tissue openings and methods thereof |
| CN114569182A (en) * | 2022-02-22 | 2022-06-03 | 科凯(南通)生命科学有限公司 | Extrusion type left auricle plugging device |
| CN115836886A (en) * | 2022-12-13 | 2023-03-24 | 东南大学泰州生物医药与医疗器械研究院 | Novel left atrial appendage occluder and unfolding method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3727164B1 (en) * | 2017-12-18 | 2024-03-13 | Boston Scientific Scimed, Inc. | Occlusive device with expandable member |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114025690A (en) * | 2019-06-17 | 2022-02-08 | 科赫里克斯医疗股份有限公司 | Medical devices and systems for occluding tissue openings and methods thereof |
| CN210990532U (en) * | 2020-05-13 | 2020-07-14 | 上海介入医疗器械有限公司 | Left auricle plugging device |
| CN112022246A (en) * | 2020-11-06 | 2020-12-04 | 上海介入医疗器械有限公司 | Left auricle occluder and use method thereof |
| CN114569182A (en) * | 2022-02-22 | 2022-06-03 | 科凯(南通)生命科学有限公司 | Extrusion type left auricle plugging device |
| CN115836886A (en) * | 2022-12-13 | 2023-03-24 | 东南大学泰州生物医药与医疗器械研究院 | Novel left atrial appendage occluder and unfolding method |
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| CN116725607A (en) | 2023-09-12 |
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