A left atrial appendage occlusion device for open surgery and methods of use

Abstract

The application discloses a left auricle occluder for direct vision surgery, which belongs to the technical field of medical devices, and comprises a closing disc and an occluder. The lower end of the occluder is fixedly provided with an upper connecting pipe. The upper middle of the closing disc is fixedly provided with a lower connecting pipe. The middle of the lower connecting pipe and the upper connecting pipe is provided with a fixing cavity. The fixing cavity in the lower connecting pipe is fixedly provided with an extension pipe. The extension pipe extends to the upper side of the lower connecting pipe. The extension pipe is screw-connected with the fixing cavity of the upper connecting pipe. The upper end of the extension pipe is fixedly provided with an upper tooth. The upper end of the driving rod extends to the occluder. The upper end of the driving rod is fixedly connected with an upper screw rod. The upper screw rod is screw-connected with a dilating disc. The closing disc and the occluder can be automatically adjusted when being introduced into the atrium of a patient, so that the occluder is introduced into the atrium of the patient.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a left atrial appendage occluder for open-heart surgery, its usage method, and its support method. Background Technology

[0002] The occluder consists of a sealing disc and an occluder. It is surgically inserted into the left atrial appendage for left atrial appendage repair. After the occluder and sealing disc are inserted into the patient's heart, the distance between the sealing disc and the occluder is fixed. After the occluder is inserted into the patient's heart, it is impossible to make specific adjustments to the occluder according to the specific condition of the patient's heart, and it is impossible to adjust the distance between the sealing disc and the occluder, which affects the adaptability of the inserted occluder to the heart.

[0003] Based on this, the present invention designs a left atrial appendage occluder for open-view surgery, its usage method, and its support method to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a left atrial appendage occluder for open-view surgery and its method of use, in order to solve the problem mentioned in the background art of the inability to adjust the distance between the occluder disc and the occluder.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A left atrial appendage occlusion device for open-view surgery includes a sealing disc and an occluder. An upper connecting tube is fixedly installed at the lower end of the occluder, and a lower connecting tube is fixedly installed in the middle of the sealing disc. A fixing cavity is formed in the middle of both the lower and upper connecting tubes. An extension tube is fixedly installed in the fixing cavity of the lower connecting tube, extending above the lower connecting tube. The extension tube is threadedly connected to the fixing cavity of the upper connecting tube. An upper tooth is fixedly installed at the upper end of the extension tube. A driving rod passes through the upper and lower connecting tubes, and the upper end of the driving rod extends between the occluder. An upper threaded rod is fixedly connected to the upper end of the driving rod, and a spreading disc is threadedly connected to the upper threaded rod.

[0007] Preferably, a driving component is fixedly installed on the driving rod, and active teeth are fixedly connected to the outer surface of the driving component. The active teeth mesh with the upper teeth. The sealing disk is a curved panel, and an adsorption component is provided on the upper surface of the sealing disk.

[0008] Preferably, the lower end of the fixed cavity inside the lower connecting pipe is provided with multiple embedding slots, a mounting base is fixedly installed on the drive rod, and an embedding rod is rotatably connected to the outer surface of the mounting base, the embedding rod matching the embedding slots.

[0009] Preferably, the plugger is provided with a plurality of curved support rods, one end of which is rotatably connected to the upper connecting pipe, a large contact ball is fixedly installed at the end of the curved support rod away from the upper connecting pipe, an anchor is fixedly installed on the curved support rod, and a small contact ball is fixedly installed on the anchor.

[0010] Preferably, a lower connecting plate is slidably connected to the drive rod, the lower connecting plate is disposed between the curved support rods, and a plurality of spreading rods are rotatably connected to the lower connecting plate. A rotating connecting ball is provided at the end of the spreading rod away from the lower connecting plate, and the rotating connecting ball is slidably connected to the curved support rod.

[0011] Preferably, each of the bending support rods is provided with a connecting rod, and each of the two ends of the connecting rod is provided with a rotating connecting ball. The rotating connecting ball is slidably connected to the bending support rod, and two sets of connecting rods are provided between adjacent bending support rods.

[0012] Preferably, a plurality of snap-fit ​​components are fixedly connected to the lower surface of the expansion disc, and a snap-fit ​​groove is formed on the upper surface of the lower connecting disc corresponding to the position of the snap-fit ​​component. The snap-fit ​​groove matches the snap-fit ​​component, and an inlet tube is fixedly installed at the lower end of the drive rod.

[0013] Another objective of this invention is to provide a technical solution:

[0014] A method of using a left atrial appendage occluder for open-heart surgery, applicable to any of the left atrial appendage occluders for open-heart surgery according to any of claims 1-7, characterized by comprising the following steps:

[0015] S1: Introduction: Medical staff insert the occlusion disc and occluder into the patient's heart through an introduction tube;

[0016] S2: Adjustment: Medical staff rotate the inlet tube, which drives the drive component to rotate. The drive component drives the upper tooth to rotate through the active tooth, thereby driving the lower connecting tube to rotate. This causes the upper and lower connecting tubes to interact and adjust the distance between the sealing disc and the upper connecting tube.

[0017] S3: Traction: The connecting rod is pulled through the inlet tube. The connecting rod drives the expansion plate to approach the lower connecting plate, so that the snap-fit ​​groove of the lower connecting plate matches the snap-fit ​​part of the expansion plate, and the driving part disengages from the upper teeth.

[0018] S4: Disassembly: Rotate the inlet tube again. The inlet tube drives the upper threaded rod to rotate. The upper threaded rod rotates and disengages from the support plate, thereby pulling out the connecting rod and the inlet tube.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] This invention involves fixing the inlet tube and the drive rod together. The drive rod, the sealing disc, and the occluder are then inserted into the patient's left atrium through the inlet tube. Medical staff then rotate the drive rod via the inlet tube. The rotation of the drive rod causes the upper toothed electric extension tube to rotate, which in turn causes the upper connecting tube to rotate. The upper connecting tube is threadedly connected to the extension tube. The rotation of the lower connecting tube adjusts the distance between the upper and lower connecting tubes. The lower connecting tube moves the sealing disc, thereby adjusting the distance between the sealing disc and the upper connecting tube, and ultimately adjusting the distance between the sealing disc and the occluder. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure from the front view of the present invention;

[0023] Figure 2 The front side of the present invention Figure 1 A partial structural diagram at point A in the middle;

[0024] Figure 3 This is a cross-sectional view of the structure of the present invention;

[0025] Figure 4 For the present invention Figure 3 A partial structural diagram at point B;

[0026] Figure 5 For the present invention Figure 3 A partial structural diagram at point C;

[0027] Figure 6 For the present invention Figure 3 A partial structural diagram at point D;

[0028] Figure 7 For the present invention Figure 3 A partial structural diagram at point E in the middle;

[0029] Figure 8 For the present invention Figure 3 A partial structural diagram at point F in the middle;

[0030] Figure 9 This is a schematic diagram of the structure of the present invention from the rear view.

[0031] The attached diagram lists the components represented by each number as follows:

[0032] 1. Sealing disc; 2. Upper connecting tube; 3. Sealer; 4. Drive rod; 5. Bending support rod; 6. Anchor; 7. Large contact ball; 8. Small contact ball; 9. Connecting rod; 10. Rotating connecting ball; 11. Spreading disc; 12. Upper threaded rod; 13. Lower connecting tube; 14. Mounting base; 15. Embedded rod; 16. Snap-fit ​​component; 17. Upper tooth; 18. Drive component; 19. Spreading rod; 20. Lower connecting disc; 21. Snap-fit ​​groove; 22. Extension tube; 23. Active tooth; 24. Embedded groove; 25. Fixing cavity; 26. Inlet tube. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see Figure 1-9 The present invention provides a technical solution:

[0035] A left atrial appendage occluder for open-view surgery includes a sealing disc 1 and an occluder 3. An upper connecting tube 2 is fixedly installed at the lower end of the occluder 3. A lower connecting tube 13 is fixedly installed in the middle of the sealing disc 1. A fixing cavity 25 is opened between the lower connecting tube 13 and the upper connecting tube 2. An extension tube 22 is fixedly installed in the fixing cavity 25 of the lower connecting tube 13. The extension tube 22 is threadedly connected to the fixing cavity 25 of the upper connecting tube 2. An upper tooth 17 is fixedly installed at the upper end of the extension tube 22. A drive rod 4 passes through the upper connecting tube 2 and the lower connecting tube 13. The upper end of the drive rod 4 extends to the occluder 3. An upper threaded rod 12 is fixedly connected to the upper end of the drive rod 4. An opening disc 11 is threadedly connected to the upper threaded rod 12.

[0036] In operation, the invention inserts the drive rod 4, the sealing disc 1, and the occluder 3 into the patient's left atrium via the inlet tube 26. Rotating the inlet tube 26 causes the drive rod 4 to rotate, which in turn rotates the drive component 18. The drive component 18 then rotates its active tooth 23, which in turn rotates its meshing upper tooth 17. The upper tooth 17 then rotates the extension tube 22. After adjusting the distance between the upper connecting tube 2 and the lower connecting tube 13, the user pulls on the inlet tube 26, which in turn drives the drive rod 4. The drive rod 4 causes the drive component 18 to move downwards, disengaging the active tooth 23 from the upper tooth 17. Simultaneously, the connecting rod 9 moves downwards, causing the opening disc to open. 11 abuts against the lower connecting plate 20, causing the snap-fit ​​16 on the spreading plate 11 to embed into the snap-fit ​​groove 21 on the lower connecting plate 20, thus fixing the spreading plate 11 and the lower connecting plate 20 together. Then, the user rotates the inlet tube 26 again, causing the drive rod 4 to rotate. The drive rod 4 rotates, causing the upper threaded rod 12 to rotate. The rotation of the upper threaded rod 12 causes it to disengage from the spreading plate 11. Then, the user pulls the inlet tube 26 again, pulling the drive rod 4 out from the lower connecting plate 20, the upper connecting tube 2, and the lower connecting tube 13. The spreading plate 11 abuts against the lower connecting plate 20, causing the edge of the spreading plate 11 to press against the end of the bent support rod 5, causing the bent support rod 5 to spread out to the edge and open up the bent support rod 5.

[0037] In this invention, after the inlet tube 26 and the drive rod 4 are fixedly connected, the drive rod 4, the sealing disc 1, and the occluder 3 are sent into the patient's left atrium through the inlet tube 26. Then, the medical staff drives the drive rod 4 to rotate through the inlet tube 26. The rotation of the drive rod 4 drives the upper tooth 17 to rotate the electric extension tube 22. The rotation of the extension tube 22 drives the upper connecting tube 2 to rotate. The upper connecting tube 2 is threadedly connected to the extension tube 22. The rotation of the lower connecting tube 13 adjusts the distance between the upper connecting tube 2 and the lower connecting tube 13. The lower connecting tube 13 drives the sealing disc 1 to move, thereby adjusting the distance between the sealing disc 1 and the upper connecting tube 2, and thus adjusting the distance between the sealing disc 1 and the occluder 3.

[0038] Among them, a driving component 18 is fixedly installed on the driving rod 4. Active teeth 23 are fixedly connected to the outer surface of the driving component 18. Active teeth 23 mesh with upper teeth 17. The sealing disk 1 is a curved panel. An adsorption component is provided on the upper surface of the sealing disk 1. The curved panel allows the sealing disk 1 to better adhere to the surface of the heart cavity. At the same time, the adsorption component can make the sealing disk 1 adhere more stably to the heart cavity.

[0039] The lower end of the inner fixed cavity 25 of the lower connecting pipe 13 is provided with multiple embedding grooves 24, and the drive rod 4 is fixedly installed with a mounting base 14. An embedding rod 15 is rotatably connected to the outer surface of the mounting base 14, and the embedding rod 15 matches the embedding groove 24.

[0040] The plugger 3 is provided with multiple curved support rods 5. One end of the curved support rod 5 is rotatably connected to the upper connecting pipe 2. A large contact ball 7 is fixedly installed on the end of the curved support rod 5 away from the upper connecting pipe 2. An anchor 6 is fixedly installed on the curved support rod 5. A small contact ball 8 is fixedly installed on the anchor 6.

[0041] Among them, the drive rod 4 is slidably connected to the lower connecting plate 20, which is disposed between the bending support rods 5. Multiple spreading rods 19 are rotatably connected to the lower connecting plate 20. A rotating connecting ball 10 is provided at the end of the spreading rod 19 away from the lower connecting plate 20. The rotating connecting ball 10 is slidably connected to the bending support rod 5.

[0042] Among them, each of the bending support rods 5 is provided with a connecting rod 9, and each end of the connecting rod 9 is provided with a rotating connecting ball 10. The rotating connecting ball 10 is slidably connected to the bending support rod 5, and two sets of connecting rods 9 are provided between adjacent bending support rods 5.

[0043] The lower surface of the expansion plate 11 is fixedly connected with multiple snap-fit ​​pieces 16, and the upper surface of the lower connecting plate 20 is provided with snap-fit ​​grooves 21 corresponding to the snap-fit ​​pieces 16. The snap-fit ​​grooves 21 match the snap-fit ​​pieces 16, and the lower end of the drive rod 4 is fixedly installed with an inlet tube 26.

[0044] Another objective of this invention is to provide a technical solution:

[0045] A method of using a left atrial appendage occluder for open-heart surgery, applicable to any of the left atrial appendage occluders for open-heart surgery according to any of claims 1-7, characterized by comprising the following steps:

[0046] S1: Introduction: Through the introduction tube 26, medical staff insert the sealing disc 1 and the occluder 3 into the patient's heart;

[0047] S2: Adjustment: Medical staff rotate the inlet tube 26, which drives the drive component 18 to rotate. The drive component 18 drives the upper tooth 17 to rotate through the active tooth 23, thereby driving the lower connecting tube 13 to rotate. This causes the upper connecting tube 2 and the lower connecting tube 13 to interact and adjust the distance between the sealing plate 1 and the upper connecting tube 2.

[0048] S3: Traction: The connecting rod 4 is pulled through the inlet tube 26. The connecting rod 4 drives the expansion plate 11 to approach the lower connecting plate 20, so that the snap groove 21 of the lower connecting plate 20 is engaged with the snap member of the expansion plate 11, and the driving member 18 disengages from the upper tooth 17.

[0049] S4: Disassembly: Rotate the inlet tube 26 again. The inlet tube 26 drives the upper threaded rod 12 to rotate. The upper threaded rod 12 rotates and disengages from the support plate 11, thereby pulling out the connecting rod 4 and the inlet tube 24.

Claims

1. A left atrial appendage occlusion device for open-heart surgery, comprising a sealing disc (1) and an occluder (3), characterized in that: The lower end of the plug (3) is fixedly installed with an upper connecting pipe (2), and the middle of the sealing plate (1) is fixedly installed with a lower connecting pipe (13). A fixed cavity is opened between the lower connecting pipe (13) and the upper connecting pipe (2). An extension pipe (22) is fixedly installed in the fixed cavity of the lower connecting pipe (13). The extension pipe (22) extends to the top of the lower connecting pipe (13). The extension pipe (22) is threadedly connected to the fixed cavity of the upper connecting pipe (2). An upper tooth (17) is fixedly installed at the upper end of the extension pipe (2). A drive rod (4) passes through the upper connecting pipe (2) and the lower connecting pipe (13). The upper end of the drive rod (4) extends to the inner center area of ​​the plug (3). An upper threaded rod (12) is fixedly connected to the upper end of the drive rod (4). The upper threaded rod (12) is threadedly connected to a spreading plate (11). A drive component (18) is fixedly installed on the drive rod (4). Active teeth (23) are fixedly connected to the outer surface of the drive component (18). The active teeth (23) mesh with the upper teeth (17). The closed plate (1) is a curved plate. An adsorption component is provided on the upper surface of the closed plate (1). The plugger (3) is provided with multiple curved support rods (5). One end of the curved support rod (5) is rotatably connected to the upper connecting pipe (2). A large contact ball (7) is fixedly installed on the end of the curved support rod (5) away from the upper connecting pipe (2). An anchor (6) is fixedly installed on the curved support rod (5). A small contact ball (8) is fixedly installed on the anchor (6). A lower connecting plate (20) is slidably connected to the drive rod (4). The lower connecting plate (20) is disposed between the curved support rods (5). A plurality of spreading rods (19) are rotatably connected to the lower connecting plate (20). A rotating connecting ball (10) is provided at one end of the spreading rod (19) away from the lower connecting plate (20). The rotating connecting ball (10) is slidably connected to the curved support rod (5). A connecting rod (9) is provided between each of the bending support rods (5). A rotating connecting ball (10) is provided at both ends of each connecting rod (9). The rotating connecting ball (10) is slidably connected to the bending support rod (5). Two sets of connecting rods (9) are provided between each adjacent bending support rod (5).

2. The left atrial appendage occluder for open-vision surgery according to claim 1, characterized in that: The lower end of the fixed cavity (25) inside the lower connecting pipe (13) is provided with multiple embedding slots (24). A mounting base (14) is fixedly installed on the drive rod (4). An embedding rod (15) is rotatably connected to the outer surface of the mounting base (14). The embedding rod (15) matches the embedding slot (24).

3. The left atrial appendage occlusion device for open-vision surgery according to claim 1, characterized in that: The lower surface of the expansion plate (11) is fixedly connected with a plurality of snap-fit ​​pieces (16), and the upper surface of the lower connecting plate (20) is provided with snap-fit ​​grooves (21) corresponding to the snap-fit ​​pieces (16). The snap-fit ​​grooves (21) match the snap-fit ​​pieces (16), and the lower end of the drive rod (4) is fixedly installed with an inlet tube (26).

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