Left auricle plugging device

Abstract

The utility model relates to the technical field of medical instruments, and particularly discloses a left auricle plugging device which comprises a left auricle plugging device body, the back face of the left auricle plugging device body is fixedly connected with an adjusting cavity, a positioning rod penetrates through the interior of a short rod, a spring buckle is arranged in the positioning rod, and the left auricle plugging device body is fixedly connected with the adjusting cavity. A movable rod is hinged to the surface of the first movable clamp, two first compression springs are fixedly connected to the inner top wall and the inner bottom wall of the adjusting cavity correspondingly, empty grooves are formed in the two sides of the inner side wall of the adjusting cavity correspondingly, a pushing ball is rotationally connected to the bottom end of a pushing rod, and two sliding blocks are slidably connected to the inner side wall of the adjusting cavity; the top end of the vertical rod is fixedly connected with a clamping hook; according to the left auricle plugging device, the adjusting cavity, the clamping hook, the positioning rod, the spring buckle and the lower pressing plate are used in a matched mode, so that the left auricle plugging device body can be stably fixed to the inner wall of a left auricle of a patient, the dislocation situation in the daily use process is avoided, and therefore the follow-up operation situation is increased.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to a left atrial appendage occluder. Background Technology

[0002] Cardiology, or cardiovascular medicine, is a clinical department within the general internal medicine department of hospitals at all levels, established for the diagnosis and treatment of cardiovascular diseases. It treats conditions such as angina pectoris, hypertension, sudden cardiac death, arrhythmia, heart failure, premature beats, irregular heartbeats, myocardial infarction, cardiomyopathy, myocarditis, and acute myocardial infarction. Left atrial appendage occlusion (LACA) involves using a specific occluder to seal the opening of the left atrial appendage, blocking communication between the left atrium and the left atrial appendage, eliminating the site of thrombus formation, and thus preventing thrombosis. LCA is a significant advancement in atrial fibrillation stroke prevention over the past 20 years, with substantial clinical evidence demonstrating its safety and effectiveness. After LCA, lifelong anticoagulation is no longer required, alleviating patients' concerns and providing a permanent solution. LCA occluders are primarily used to prevent stroke caused by thromboembolism in patients with atrial fibrillation; however, some existing LCA occluders still have certain shortcomings and require improvement.

[0003] Chinese patent CN214387575U discloses a left atrial appendage occluder, relating to the field of medical device technology. The occluder includes an occlusion component and a drug coating. The occlusion component is used to support the left atrial appendage and to block thrombus passage. A hook is provided on the outer wall of the occlusion component to hook onto the inner wall of the left atrial appendage. The drug coating is applied to the sidewall of the occlusion component and is used to prevent thrombus formation. This left atrial appendage occluder can improve the endothelialization rate of the occluder surface and reduce the risk of thrombus formation.

[0004] However, while the aforementioned technical solution can achieve the purpose of occluding the left atrial appendage, it only hooks onto the inner wall of the left atrial appendage in one direction. Prolonged use or patient movement can cause the left atrial appendage occluder to become displaced. Although this is rare, if it does occur, the treatment method needs to be determined based on the location of the displacement and the surgeon's experience. If the occluder is displaced into the left atrium or aorta, it can usually be removed through a catheter. If it is displaced into the left ventricle and fixed therein, it may require open-heart surgery for removal. Therefore, it is essential to keep the left atrial appendage occluder stable on the inner wall of the patient's left atrial appendage. Utility Model Content

[0005] The purpose of this invention is to provide a left atrial appendage occlusion device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A left atrial appendage occlusion device includes: a left atrial appendage occlusion device body; an adjustment cavity is fixedly connected to the back of the left atrial appendage occlusion device body; a short rod is fixedly connected inside the left atrial appendage occlusion device body; a positioning rod passes through the inside of the short rod; a spring buckle is provided inside the positioning rod; an insertion hole is opened inside the short rod, and the surface of the spring buckle passes through the inside of the insertion hole; two first movable clamps are fixedly connected to one side of the surface of the positioning rod; movable rods are hinged to the surface of the first movable clamps; two first compression springs are fixedly connected to the inner top wall and inner bottom wall of the adjustment cavity; and the bottom ends of the first compression springs are fixedly... A connecting block is fixedly connected to the bottom of the connecting block, and a second movable clamp is fixedly connected to the bottom of the connecting block. The top of the movable rod is hinged to the surface of the second movable clamp. Two connecting rods are fixedly connected to the surface of the positioning rod. Both sides of the inner wall of the adjustment cavity are provided with slots. An adjustment plate is fixedly connected to the inside of the slots through a rotating shaft. A push rod is rotatably connected to the top of one side of the adjustment plate. A push ball is rotatably connected to the bottom of the push rod. Two sliding blocks are slidably connected to the inner wall of the adjustment cavity. A vertical rod is fixedly connected to the top of the connecting block, and the surface of the vertical rod penetrates the inside of the adjustment cavity. A hook is fixedly connected to the top of the vertical rod.

[0008] Preferably, a magnetic chuck is fixedly connected to one side of the surface of the short rod, and a sleeve is fitted onto the surface of the short rod, with one end of the sleeve attracting the magnetic chuck.

[0009] Preferably, a fixing cylinder is fixedly connected to one side of the inner wall of the sleeve, and a second compression spring is fixedly connected to the inner bottom wall of the fixing cylinder.

[0010] Preferably, the sleeve has a lower pressure plate inside, and the lower pressure plate slides through the inside of the fixed cylinder.

[0011] Preferably, a pressing block is fixedly connected to one side of the surface of the lower pressure plate, and a pressing block is fixedly connected to the other side of the surface of the lower pressure plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] (1) The left atrial appendage occluder body is fixed in the position of the patient's left atrial appendage medial wall. At the same time, it is fixed in the position of the patient's left atrial appendage medial wall by two hooks in opposite directions, so as to avoid displacement to the left and right, and further ensure its stability in the vicinity of the patient's left atrial appendage. This plays a great role in preventing stroke caused by thromboembolism in patients with atrial fibrillation.

[0014] (2) After the left atrial appendage occluder body is fixed inside the patient's left atrial appendage, the positioning rod can be directly disengaged by the staff pressing the lower pressure plate from the outside. The operation is simple and convenient for staff to use. Attached Figure Description

[0015] Figure 1 This is a perspective view of the present utility model;

[0016] Figure 2 This is a cross-sectional view of the movable rod of this utility model;

[0017] Figure 3 This is a perspective view of the adjusting plate of this utility model;

[0018] Figure 4 This is a cross-sectional view of the inside of the adjustment cavity of this utility model;

[0019] Figure 5 This is a cross-sectional view of the inside of the sleeve of this utility model;

[0020] In the diagram: 1. Left atrial appendage occluder body; 2. Adjustment chamber; 3. Short rod; 4. Positioning rod; 5. Spring buckle; 6. First movable clamp; 7. Movable rod; 8. First compression spring; 9. Connecting block; 10. Second movable clamp; 11. Connecting rod; 12. Hollow slot; 13. Adjusting plate; 14. Push rod; 15. Push ball; 16. Sliding block; 17. Hook; 18. Magnetic chuck; 19. Sleeve; 20. Fixed cylinder; 21. Second compression spring; 22. Squeezing block; 23. Lower pressure plate; 24. Lower pressure block. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1:

[0023] Please see Figures 1 to 4As shown, a left atrial appendage occlusion device includes a left atrial appendage occlusion device body 1. An adjustment cavity 2 is fixedly connected to the back of the left atrial appendage occlusion device body 1. A short rod 3 is fixedly connected inside the left atrial appendage occlusion device body 1. A positioning rod 4 passes through the inside of the short rod 3. A spring buckle 5 is provided inside the positioning rod 4. An insertion hole is opened inside the short rod 3, and the surface of the spring buckle 5 passes through the inside of the insertion hole. Two first movable clips 6 are fixedly connected to one side of the surface of the positioning rod 4. A movable rod 7 is hinged to the surface of the first movable clip 6. Two first compression springs 8 are fixedly connected to the inner top and bottom walls of the adjustment cavity 2. A connecting rod is fixedly connected to the bottom end of the first compression spring 8. Block 9, the bottom of the connecting block 9 is fixedly connected to the second movable clamp 10, and the top of the movable rod 7 is hinged to the surface of the second movable clamp 10. The surface of the positioning rod 4 is fixedly connected to two connecting rods 11. Both sides of the inner wall of the adjusting cavity 2 are provided with slots 12. The interior of the slots 12 is fixedly connected to the adjusting plate 13 through a rotating shaft. The top of one side of the adjusting plate 13 is rotatably connected to the push rod 14. The bottom of the push rod 14 is rotatably connected to the push ball 15. The inner wall of the adjusting cavity 2 is slidably connected to two sliding blocks 16. The top of the connecting block 9 is fixedly connected to the vertical rod, and the surface of the vertical rod penetrates the interior of the adjusting cavity 2. The top of the vertical rod is fixedly connected to the hook 17. The short rod 3 allows the positioning rod 4 to pass through its interior. The positioning rod 4 also allows the spring buckle 5 to be positioned inside, facilitating its subsequent insertion into the insertion hole and thus fixing the positioning rod 4. The first movable clamp 6 allows the bottom end of the movable rod 7 to swing at a certain angle. The first compression spring 8 fixes the connecting block 9 at its bottom. The connecting block 9 fixes the second movable clamp 10, allowing the top end of the movable rod 7 to hinge to it during swing. The slot 12 allows the adjusting plate 13 to swing at a certain angle within it. The rotating shaft is rotatably positioned inside the slot 12, but the other side of the rotating shaft surface... The sliding block 16 is fixedly connected to the inside of the adjustment plate 13. Through the setting of the push rod 14 and the push ball 15, the sliding block 16 can be pushed, thereby causing another set of movable rods 7 inside the adjustment cavity 2 to move in the opposite direction. It should be noted that there are two sets of movable rods 7 inside the adjustment cavity 2. The other set is pushed by the push rod 14 after the positioning rod 4 is pulled outward, so that the two hooks 17 on the left side retract a certain distance. When the left atrial appendage occluder body 1 reaches the position near the inner wall of the patient's left atrial appendage, the positioning of the positioning rod 4 is released. At this time, the hooks 17 are reset and locked into the position near the inner wall of the patient's left atrial appendage. The positions of the two sets of hooks 17 are opposite, which plays the role of left and right limit.

[0024] Example 2:

[0025] Please see Figure 1 and Figure 5As shown, a magnetic chuck 18 is fixedly connected to one side of the surface of the short rod 3, and a sleeve 19 is fitted onto the surface of the short rod 3, with one end of the sleeve 19 attracting the magnetic chuck 18. The magnetic chuck 18 ensures that the sleeve 19, after being fitted onto the surface of the short rod 3, attracts it and remains fixed.

[0026] A fixing cylinder 20 is fixedly connected to one side of the inner wall of the sleeve 19, and a second compression spring 21 is fixedly connected to the inner bottom wall of the fixing cylinder 20. The fixing cylinder 20 is used to fix the second compression spring 21 inside it.

[0027] The sleeve 19 has a lower pressure plate 23 inside, which slides and passes through the inside of the fixed cylinder 20. The second compression spring 21 enables the lower pressure plate 23 to exert a certain compressive force when pressed down, and then it can be easily reset.

[0028] A pressing block 22 is fixedly connected to one side of the surface of the pressing plate 23, and a pressing block 24 is fixedly connected to the other side of the surface of the pressing plate 23. The pressing block 22 allows the pressing block 24 to be pressed down. The position of the pressing block 24 corresponds to the position of the spring buckle 5, which facilitates pressing it down, thereby causing the positioning rod 4 to move inward a certain distance to reset, and then causing the hook 17 to reset and lock into the position of the patient's left atrial appendage inner wall.

[0029] The working principle of this utility model is as follows: The operator pulls the positioning rod 4 outwards beforehand, causing the spring buckle 5 to insert into the insertion hole. At this time, the positioning rod 4 is fixed inside the short rod 3. As the positioning rod 4 moves outwards, the two first movable clips 6 on its surface move along with it. The first movable clips 6 then cause the movable rod 7 to swing a certain distance. Simultaneously, the positioning rod 4 also causes the connecting rod 11 to move. The connecting rod 11 then pushes the adjusting plate 13 to move a certain distance, causing the push rod 14 on one side of the adjusting plate 13 to move backwards. This push rod 14 pushes the pushing ball 15 backwards, causing the pushing ball 15 to contact the inclined bottom of the sliding block 16, thus pushing the sliding block 16 upwards. The two movable rods 7 on the right side inside the adjusting cavity 2 move upwards along with the sliding block 16. The movement causes the two first compression springs 8 above the current moving rod 7 to be squeezed, which in turn causes the hook 17 to extend outward and hook onto the position near the inner wall of the patient's left atrial appendage. After the left atrial appendage occluder body 1 is placed stably, the staff presses the lower pressure plate 23 downward through the sleeve 19. Then the compression block 22 squeezes the second compression spring 21 to compress it. At the same time, the lower pressure block 24 presses the spring buckle 5 downward, and then the spring buckle 5 disengages from the insertion hole. At this time, the positioning rod 4 resets, and the two sets of moving rods 7 on the left side reset. At the same time, the two first compression springs 8 on the left side reset, which causes the hook 17 to contact the inner wall of the patient's left atrial appendage. The two hooks 17 are in opposite directions, so that they are locked onto the position of the inner wall of the patient's left atrial appendage, thereby fixing the left atrial appendage occluder body 1.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A left atrial appendage occluder, characterized by, include: A left atrial appendage occluder body (1) has an adjustment cavity (2) fixedly connected to its back side. A short rod (3) is fixedly connected inside the left atrial appendage occluder body (1). A positioning rod (4) passes through the inside of the short rod (3). A spring buckle (5) is provided inside the positioning rod (4). An insertion hole is opened inside the short rod (3), and the surface of the spring buckle (5) passes through the inside of the insertion hole. Two first movable clips (6) are fixedly connected to one side of the surface of the positioning rod (4). A movable rod (7) is hinged to the surface of the first movable clip (6). Two first compression springs (8) are fixedly connected to the inner top wall and inner bottom wall of the adjustment cavity (2). A connecting block (9) is fixedly connected to the bottom end of the first compression spring (8). The bottom of the block (9) is fixedly connected to a second movable clamp (10), and the top of the movable rod (7) is hinged to the surface of the second movable clamp (10). The surface of the positioning rod (4) is fixedly connected to two connecting rods (11). The inner sidewall of the adjustment cavity (2) is provided with slots (12) on both sides. The interior of the slot (12) is fixedly connected to an adjustment plate (13) via a rotating shaft. The top of one side of the adjustment plate (13) is rotatably connected to a push rod (14). The bottom of the push rod (14) is rotatably connected to a push ball (15). The inner sidewall of the adjustment cavity (2) is slidably connected to two sliding blocks (16). The top of the connecting block (9) is fixedly connected to a vertical rod, and the surface of the vertical rod penetrates the interior of the adjustment cavity (2). The top of the vertical rod is fixedly connected to a hook (17).

2. The left atrial appendage occlusion device of claim 1, wherein: A magnetic chuck (18) is fixedly connected to one side of the surface of the short rod (3), and a sleeve (19) is sleeved on the surface of the short rod (3), with one end of the sleeve (19) attracting the magnetic chuck (18).

3. The left atrial appendage occlusion device of claim 2, wherein: A fixing cylinder (20) is fixedly connected to one side of the inner wall of the sleeve (19), and a second compression spring (21) is fixedly connected to the inner bottom wall of the fixing cylinder (20).

4. The left atrial appendage occlusion device of claim 2, wherein: The sleeve (19) is provided with a lower pressure plate (23) inside, and the lower pressure plate (23) slides through the inside of the fixed cylinder (20).

5. The left atrial appendage occlusion device of claim 4, wherein: A pressing block (22) is fixedly connected to one side of the surface of the lower pressure plate (23), and a lower pressing block (24) is fixedly connected to the other side of the surface of the lower pressure plate (23).

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