Left auricle plugging device

Abstract

The utility model discloses a left atrial appendage occluder, which relates to the technical field of medical instruments and comprises an anchoring disc and an occluding disc, the anchoring disc is provided with a first central shaft, the occluding disc is provided with a second central shaft, and the first central shaft and the second central shaft are arranged in a staggered manner. The occluder is positioned at a target position, such as a left atrial appendage, through the anchoring disc, and the left atrial appendage is occluded through the occluding disc. The central axis of the anchoring disc and the central axis of the plugging disc are arranged in a staggered mode, and the better plugging effect is achieved especially for the case that an outlet of the left auricle is eccentric relative to an outlet channel.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a left atrial appendage occluder. Background Art

[0002] Atrial fibrillation (AF) is the most common sustained cardiac arrhythmia. The incidence of AF increases with age, reaching 10% in people over 75 years old.

[0003] Due to its unique morphology and structure, the left atrial appendage (LAA) is not only the primary site for thrombosis in atrial fibrillation (AF), but also a key area for its development and maintenance. LAA occluders, which block the LAA with a specialized device to prevent AF and thromboembolism, are a recently developed, less invasive, simple, and time-consuming treatment.

[0004] Currently, some technical solutions for left atrial appendage occluders have unsatisfactory occlusion effects on the left atrial appendage. How to develop an occluder with good occlusion effects is a technical problem that urgently needs to be solved in this field. Utility Model Content

[0005] In order to solve at least one problem in the background technology, the present invention provides a left atrial appendage occluder.

[0006] In order to achieve the above purpose, the following technical solution is adopted.

[0007] A left atrial appendage occluder, comprising:

[0008] an anchor disk having a first central axis;

[0009] The occluding disk is connected to the anchoring disk, and the occluding disk has a second central axis, and the first central axis and the second central axis are staggered.

[0010] In some embodiments, a connecting portion is provided on the blocking disk, and the connecting portion is provided with a connecting portion for connecting the anchoring disk.

[0011] In some embodiments, the first central axis passes through the connecting portion; or the connecting portion deviates from the first central axis.

[0012] In some embodiments, the occluder includes an axial distance adjustment assembly connecting the occluding disk and the anchoring disk.

[0013] In some embodiments, the axial distance adjustment assembly comprises:

[0014] a first connecting member connected to the anchor plate;

[0015] The second connecting member is connected to the sealing disk, and the first connecting member and the second connecting member are provided with at least two engaging positions in the axial direction.

[0016] In some embodiments, the first connecting member is provided with at least two snap-fitting grooves in the axial direction, and the second connecting member is provided with a snap-fitting protrusion that is snap-fitted with the snap-fitting grooves; or the second connecting member is provided with at least two snap-fitting grooves in the axial direction, and the first connecting member is provided with a snap-fitting protrusion that is snap-fitted with the snap-fitting grooves.

[0017] In some embodiments, the occluding disk and the anchoring disk are detachably connected.

[0018] In some embodiments, the anchor plate includes an anchor bracket and a first flow-blocking film connected to the anchor bracket.

[0019] In some embodiments, the anchoring bracket includes a plurality of support rods arranged in a circumferential direction, both ends of the support rods are connecting ends, or one end of the support rod is a connecting end and the other end of the support rod is a free end.

[0020] In some embodiments, the occluding disk includes an occluding bracket and a second flow-blocking membrane connected to the occluding bracket.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the present invention, the occluder is positioned at the target location by an anchoring disc. A suitable location within the left atrial appendage is selected as the anchoring zone. The anchoring disc is released and fixed in the anchoring zone, and the left atrial appendage opening is blocked by the occluding disc. By staggering the central axes of the anchoring disc and the occluding disc, a better occluding effect is achieved, especially for cases where the outlet of the left atrial appendage is eccentric relative to the outlet channel.

[0023] 2. The height of the occluder is adjustable, making the selection of the anchoring area more flexible and meeting the clinical needs of different left atrial appendage anatomical structures. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic structural diagram of an occluder in one embodiment of the present utility model;

[0025] Figure 2 for Figure 1 A schematic diagram of the vertical projection of the occlusion disk in the occlusion device shown;

[0026] Figure 3 This is a structural schematic diagram of an occluder in one embodiment of the present invention installed at the left atrial appendage;

[0027] Figure 4A side view of an occluding disk in one embodiment of the present invention;

[0028] Figure 5A A top view of a sealing disk in one embodiment of the present invention;

[0029] Figure 5B A top view of a sealing disk in another embodiment of the present invention;

[0030] Figure 6 A side view of an occluding disk in one embodiment of the present invention;

[0031] Figure 7 A side view of an anchor plate in one embodiment of the present invention;

[0032] Figure 8 for Figure 1 Cross-section at AA in the middle;

[0033] Figure 9 This is a schematic structural diagram of an occluder in another embodiment of the present invention;

[0034] Figure 10 for Figure 9 A schematic diagram of the occluder in the embodiment shown is during the process of being inserted into the sheath;

[0035] Figure 11A A schematic structural diagram of the left atrial appendage is shown;

[0036] Figure 11B A schematic structural diagram of the left atrial appendage in another situation is shown;

[0037] Figure 12A This is a structural diagram of one part of the occluder of the present invention;

[0038] Figure 13A This is a schematic structural diagram of another part of the occluder of the present invention;

[0039] Figure 12B for Figure 12A Enlarged view of point A in the middle;

[0040] Figure 13B for Figure 13A Enlarged view of point B in the middle;

[0041] Figure 14 This is a schematic diagram of the three-dimensional structure of the first connecting member in one embodiment of the present utility model;

[0042] Figure 15 This is a schematic diagram of the three-dimensional structure of the second connecting member in one embodiment of the present utility model.

[0043] Reference numerals: 100 - anchoring plate; 110 - first central axis; 120 - support rod; 121 - main rod; 122 - first branch; 123 - second branch; 124 - third branch; 125 - fourth branch; 126 - free end; 131 - anchoring bracket; 132 - first flow-blocking membrane; 200 - blocking plate; 210 - second central axis; 220 - connecting portion; 230 - long blocking portion; 240 - short Sealing part; 251-top; 252-bottom; 253-side; 261-sealing bracket; 262-second flow-blocking membrane; 270-geometric center; 310-first connecting piece; 311-insertion port; 312-matching cavity; 313-first snap-fit ​​groove; 314-second snap-fit ​​groove; 320-second connecting piece; 321-snap-fitting protrusion; 322-elastic arm; 410-sheath; 500-left atrial appendage. DETAILED DESCRIPTION

[0044] To facilitate understanding of the present invention, a more comprehensive description of the present invention is provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to facilitate a more thorough and comprehensive understanding of the present disclosure.

[0045] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. Conversely, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.

[0046] As used herein, the term "distal end" refers to the end of an element farther from the operator along its length when the element is being operated. The term "proximal end" refers to the end of the element closer to the operator along its length. When an element is not being operated, the terms "distal end" and "proximal end" can be understood as distinguishing different parts of the element. The terms "distal end" and "proximal end" are used for illustrative purposes only, to facilitate understanding of the description of a particular element, and do not constitute limitations on the structure of that element.

[0047] Specifically, this embodiment discloses a left atrial appendage occluder, such as Figure 1As shown, the occluder includes an anchoring disc 100 and an occluding disc 200. The anchoring disc 100 has a first central axis 110, and the occluding disc 200 has a second central axis 210, and the first central axis 110 and the second central axis 210 are offset. The occluder is used to be positioned at the target position by the anchoring disc, and a suitable position in the left atrial appendage is selected as the anchoring area. The anchoring disc is released and fixed in the anchoring area, and the occluding disc is used to block the left atrial appendage orifice. After the occluder is implanted in the left atrial appendage, residual shunt may occur. The position where the occluder has residual shunt is more common near the pulmonary vein side. By setting the central axes of the anchoring disc and the occluding disc offset, a larger area can be blocked at the position where residual shunt is prone to occur, which has a better blocking effect.

[0048] In some embodiments, the occluding disk 200 is provided with a connecting portion 220, which is used to connect to the anchoring disk 100. The area enclosed by the side contour of the occluding disk 200 has a geometric center 270, and the connecting portion 220 is eccentric relative to the geometric center 270. When determining the geometric center 270 of the occluding disk 200, the occluding disk 200 can be projected in the vertical direction. Figure 2 for Figure 1 The schematic projection diagram of the occluding disk 200 in the occluder is shown in the vertical direction. In the schematic projection diagram, the geometric center 270 of the occluding disk 200 can be determined relatively conveniently.

[0049] In some embodiments, the vertical projection of the occluding disk 200 is an ellipse, that is, the area enclosed by the lateral contour of the occluding disk 200 is an ellipse. In some embodiments, at least the major axis of the ellipse is longer than the diameter of the occluding disk 200. In another embodiment, the projection of the occluding disk 200 along the axial direction may overlap with the anchoring disk 100 to a certain extent, completely overlap, or not overlap.

[0050] For an elliptical occluder disk 200, the geometric center 270 of the ellipse is generally referred to as the center of gravity of the ellipse, also known as the center of mass of the ellipse. The center of gravity of an ellipse is the average position of all points on the ellipse and can be determined by the geometric properties of the ellipse. The center of gravity of an ellipse is located on the line connecting the two foci of the ellipse and coincides with the intersection of the major axis and the minor axis of the ellipse. Figure 2 In FIG. 2 , the major axis and minor axis of the ellipse are shown by dotted lines, and the intersection of the major axis and minor axis is the geometric center 270 of the ellipse. The connecting portion 220 is eccentrically arranged relative to the geometric center 270 of the ellipse. Figure 1 , the first central axis 110 passes through the connecting portion 220. Of course, in some embodiments, the connecting portion 220 may also deviate from the first central axis 110.

[0051] Figure 3This is a schematic diagram of the structure of an occluder in one embodiment of the present invention installed in the left atrial appendage 500. The center of the outlet of the left atrial appendage 500 is eccentric relative to the center of the outlet passage. The anchoring disk 100 is anchored in the outlet passage of the left atrial appendage 500, and the occluding disk 200 blocks the outlet of the left atrial appendage 500.

[0052] like Figure 2 As shown, a line passing through the connecting portion 220 and parallel to the minor axis of the ellipse divides the sealing disk 200 into a long sealing portion 230 and a short sealing portion 240 on the left and right sides of the connecting portion 220, as shown in FIG. Figure 3 As shown, the design of the long occluding portion 230 and the short occluding portion 240 enables the occluding disk 200 to more fully occlude the outlet of the left atrial appendage 500 .

[0053] In some embodiments, the occluding disk 200 may be a single-layer structure or a multi-layer structure. Figure 3 As shown, the occluding disk 200 has a double-layer structure, which can be understood as a double-layer thin sheet structure formed by flattening the cage-shaped occluding disk 200 .

[0054] Figure 4 The figure is a side view of an occluding disk 200 in one embodiment. The occluding disk 200 includes a top 251 and a bottom 252, which are arranged opposite to each other, and further includes a side portion 253 connecting the top 251 and the bottom 252. The area of ​​the top 251 is smaller than the area of ​​the bottom 252. The connecting portion 220 of the occluding disk 200 is located at the top 251, that is, the top 251 is the side facing the anchoring disk 100, and the bottom 252 is the side away from the anchoring disk 100. The side portion 253 may include a curved structure to better fit the inner wall of the heart at the left atrial appendage 500. When Figure 4 When the occluding disc 200 shown is installed in the left atrial appendage 500, the side portion 253 and the top portion 251 protrude toward the left atrial appendage 500, which can better seal the left atrial appendage 500 and reduce side leakage.

[0055] Figure 5A and Figure 5B They are respectively top views of the blocking disk 200 in two embodiments of the present invention, as shown in FIG. Figure 5A As shown, the cross section of the occluding disk 200 is circular. Figure 5B As shown, the cross-section of the occluding disk 200 is polygonal. When the cross-section of the occluding disk 200 is polygonal, the corners of the polygon are rounded to reduce damage to the heart's inner wall. In other words, the cross-section of the occluding disk 200 can be a regular shape such as a circle or polygon, or other irregular shapes.

[0056] Figure 62 is a side view of a sealing disc 200 in one embodiment. In some embodiments, the sealing disc 200 includes a sealing support 261 and a second flow-blocking film 262 connected to the sealing support 261. The second flow-blocking film 262 can be a PET flow-blocking film.

[0057] In some embodiments, the blocking stent 261 can adopt a mesh structure woven from nickel-titanium wire, so that the blocking stent 261 has better elasticity or ductility, and the blocking stent 261 has a certain elasticity and can be elastically supported on the inner wall of the heart, so that the outer periphery of the blocking stent 261 fits tightly against the inner wall of the heart.

[0058] In some embodiments, the second flow-blocking film 262 may be attached to the inner surface of the blocking bracket 261 . For example, a sewing process may be used to connect the second flow-blocking film 262 to the blocking bracket 261 . Figure 6 In the figure, the positional relationship between the blocking bracket 261 and the second flow-blocking film 262 is conveniently illustrated. In fact, the second flow-blocking film 262 is in a contact relationship with the surface of the blocking bracket 261. In some embodiments, the second flow-blocking film 262 may also be disposed on the periphery of the blocking bracket 261.

[0059] In some embodiments, the second flow-blocking film 262 can be completely attached to the entire blocking bracket 261 .

[0060] In some embodiments, the second flow blocking film 262 is attached to at least half of the area of ​​the blocking bracket 261. That is, the maximum radial dimension of the blocking bracket 261 is used as the boundary, and the second flow blocking film 262 is attached to at least half of the area of ​​the blocking bracket 261. Figure 6 The blocking bracket 261 is divided into an upper part close to the anchor plate 100 and a lower part away from the anchor plate 100 in the vertical direction, and the second flow-blocking film 262 is attached to at least the upper half or the lower half of the anchor plate 100.

[0061] Figure 7 FIG. 1 is a side view of an anchor plate 100 in one embodiment of the present invention. In some embodiments, the anchor plate 100 includes an anchor bracket 131 and a first flow-blocking film 132 connected to the anchor bracket 131. The first flow-blocking film 132 may be a PET flow-blocking film.

[0062] In some embodiments, as Figure 7 As shown, the first flow-blocking film 132 can be attached to the outer surface of the anchoring bracket 131 . For example, a sewing process can be used to connect the first flow-blocking film 132 to the anchoring bracket 131 . Figure 7 The figure is for the convenience of illustrating the positional relationship between the anchor bracket 131 and the first flow blocking film 132. In fact, the first flow blocking film 132 is in an attached relationship with the surface of the anchor bracket 131. In some embodiments, the first flow blocking film 132 can also be disposed inside the anchor bracket 131.

[0063] In some embodiments, the first flow-blocking film 132 is attached to at least half of the area of ​​the anchoring stent 131. That is, the anchoring stent 131 is divided into a lower half close to the occluding disk 200 and an upper half away from the occluding disk 200, with the maximum radial dimension of the anchoring stent 131 as the dividing line. The first flow-blocking film 132 is attached to at least the upper half or the lower half of the anchoring disk 100.

[0064] In some embodiments, the first flow-blocking film 132 may be completely attached to the entire anchoring bracket 131 .

[0065] like Figure 1 and Figure 3 As shown, Figure 1 and Figure 3 The anchoring plate 100 in the occluder shown may include an anchoring bracket 131 and a first flow-blocking film 132, or may not include the first flow-blocking film 132. Figure 1 and Figure 7 , further describing the anchoring bracket 131. The anchoring bracket 131 includes a plurality of support rods 120 arranged in a circumferential direction. Figure 8 for Figure 1 The cross-sectional view at AA in the middle shows that in the AA plane, these support rods 120 are arranged at intervals in the circumferential direction. The occluder includes at least one cross-sectional plane such as AA, so that these support rods 120 are arranged at intervals. Of course, these support rods 120 can also have multiple branches. For example, Figure 1 In the embodiment, one of the support rods 120 extends to the distal end and forms a first branch 122 and a second branch 123. The support rod 120 is called the main rod 121 before it branches. The main rod 121 and the first branch 122 and the second branch 123 are roughly Y-shaped at the branching point. Figure 1 In the embodiment, one of the support rods 120 extends toward the proximal end and forms a third branch 124 and a fourth branch 125. The main rod 121 and the third branch 124 and the fourth branch 125 are roughly Y-shaped at the branching point. Of course, in other embodiments, the anchor plate 100 can also be mesh-shaped.

[0066] exist Figure 1 In the illustrated embodiment, the distal end of the support rod 120 forms a first branch 122 and a second branch 123, the other ends of which are connected to other branches or other support rods 120. The proximal end of the support rod 120 forms a third branch 124 and a fourth branch 125, the other ends of which are connected to other branches or other support rods 120. In other words, both ends of the support rod 120 are connecting ends, which can ensure that both ends of the support rod 120 are fully fixed. When the anchor plate 100 is anchored at the left atrial appendage 500, the shape of the anchor plate 100 is more stable, and the anchoring and support performance are better.

[0067] Figure 9 This is a schematic structural diagram of an occluder in another embodiment of the present invention. Figure 9 and Figure 1 The main difference between the embodiments shown is the structure of the anchor disc 100. Figure 9 In the illustrated embodiment, the anchor plate 100 may include an anchor bracket 131 and a first flow-blocking film 132 , or may not include the first flow-blocking film 132 . Figure 9 1 and 2 show the anchor bracket 131 of the anchor plate 100 , while the first flow-blocking film 132 is not shown.

[0068] The anchoring bracket 131 includes a plurality of support rods 120 arranged in a circumferential direction, one end of these support rods 120 is directly or indirectly connected, and the other end is freely suspended. In some embodiments, in order to make the anchoring plate more firmly anchored to the left atrial appendage, barbs are also provided on the support rods 120. One end of these support rods 120 is a connecting end and the other end is a free end 126. By providing the free end 126, the deformation amplitude of the free end 126 is made larger, and the compressibility of the anchoring plate 100 is made better. When the anchoring plate 100 is transported, it will be compressed in a sheath tube 410 with a smaller diameter, and then transported to the target position in the blood vessel. The free end 126 of the anchoring plate 100 makes it easier to be compressed in the sheath tube 410 during compression.

[0069] Figure 10 for Figure 9 The illustrated embodiment is a schematic diagram of the occluder during the process of being received into the sheath 410 . During this process, the support rod 120 can be gradually bent toward the distal end (upward), thereby making it easier to enter the sheath 410 .

[0070] Figure 11A and Figure 11B Schematic diagrams of the structure of the left atrial appendage 500 in two situations are shown respectively. Figure 11A The length of the left atrial appendage 500 at the channel is L1, Figure 11B The length of the left atrial appendage 500 in the passage is L2, where L1 is smaller than L2. In this case, the same occluder is often difficult to be compatible, that is, if a certain occluder can just fit Figure 11A If the left atrial appendage 500 is blocked, the occluder may not be just right for Figure 11B On the contrary, if a certain occluder can just fit the left atrial appendage 500, Figure 11B If the left atrial appendage 500 is blocked, the occluder may not be just right for the Figure 11A The left atrial appendage 500 is shown to be occluded.

[0071] To this end, in one embodiment of the present invention, a left atrial appendage occluder is provided, Figure 12A 、 Figure 12B 、 Figure 13A and Figure 13B Provide explanation. Figure 12A and Figure 13A They are structural schematic diagrams of two different parts of the occluder of the utility model, Figure 12B for Figure 12A The enlarged view of point A in the middle. Figure 13B for Figure 13A Enlarged view of point B in the middle.

[0072] The occluder includes an axial distance adjustment assembly that connects the occluding disk 200 and the anchoring disk 100. The axial distance adjustment assembly includes a first connector 310 and a second connector 320. The first connector 310 is connected to the anchoring disk 100, and the second connector 320 is connected to the connection portion 220 of the occluding disk 200. The second connector 320 is located on the side of the anchoring disk 100 facing the occluding disk 200, and the second connector 320 is located on the side of the occluding disk 200 facing the anchoring disk 100. The first connector 310 and the second connector 320 are removable and reconnectable.

[0073] Furthermore, when the first connector 310 and the second connector 320 are in a connected state, the axial connection distance between the first connector 310 and the second connector 320 is adjustable, so that the axial distance between the anchor plate 100 and the connecting plate is adjustable. Figure 11A or Figure 11B When the left atrial appendage 500 is shown in different situations, the axial distance between the first connecting member 310 and the second connecting member 320 can be adjusted to adapt to different left atrial appendages 500.

[0074] In some embodiments, the first connector 310 and the second connector 320 are provided with at least two engaging positions in the axial direction, and the two engaging positions enable the anchoring disk 100 and the blocking disk 200 to have different distances in the axial direction.

[0075] In some embodiments, as Figure 12B As shown, the first connecting member 310 is provided with a first clamping groove 313 and a second clamping groove 314 in the axial direction. Figure 13B As shown, the second connecting member 320 includes a snap-fitting protrusion 321, which can be selectively connected to the first snap-fitting groove 313 or the second snap-fitting groove 314. When the snap-fitting protrusion 321 is snap-fitted with the first snap-fitting groove 313, the first connecting member 310 and the second connecting member 320 are said to be in a first snap-fitting position. When the snap-fitting protrusion 321 is snap-fitted with the second snap-fitting groove 314, the first connecting member 310 and the second connecting member 320 are said to be in a second snap-fitting position.

[0076] In some embodiments, the first connecting member 310 includes a plurality of snap-in slots.

[0077] like Figure 12B As shown, there are two groups of snap-fit ​​grooves on the first connecting member 310 , and each group of snap-fit ​​grooves includes two hole structures or groove structures symmetrically arranged in the radial direction.

[0078] like Figure 13B As shown, there are two engaging protrusions 321 on the second connecting member 320, and the two engaging protrusions 321 are symmetrically arranged in the radial direction of the second connecting member 320. In other words, the number of engaging protrusions 321 is the same as the number of engaging slots in each group, and they correspond one to one.

[0079] In some embodiments, the second connecting member 320 includes an elastic arm 322, and the snap-fitting protrusion 321 is provided on the elastic arm 322, so that the snap-fitting protrusion 321 can be snapped into the snap-fitting groove. When the elastic arm 322 is elastically bent, for example Figure 13B When the upper ends of the two elastic arms 322 are close to each other, the engaging protrusion 321 can be disengaged from the engaging groove, thereby conveniently switching to engage with different engaging grooves.

[0080] In some embodiments, as Figure 12A or Figure 12B As shown, the first connecting member 310 is provided with a mating cavity 312, and the snap-fitting groove is provided on the side wall of the mating cavity 312. The distal end (lower end) of the first connecting member 310 is provided with an insertion port 311, and the snap-fitting protrusion 321 can be detachably inserted from the insertion port 311 into the mating cavity 312, so that the snap-fitting protrusion 321 is snap-fitted with the snap-fitting groove.

[0081] Figure 14 FIG. 1 is a schematic diagram of the three-dimensional structure of the first connecting member 310 in one embodiment. Figure 15 FIG. 3 is a schematic diagram of the three-dimensional structure of the second connecting member 320 in one embodiment. Figure 14 As shown, the first engaging groove 313 and the second engaging groove 314 are staggered in the circumferential direction. Thus, when the engaging protrusion 321 engages with the second engaging groove 314 and needs to be removed, the elastic arm 322 is elastically bent radially inward, separating the engaging protrusion 321 from the second engaging groove 314. The engaging protrusion 321 is then moved downward and removed from the insertion opening 311. During the downward movement of the engaging protrusion 321, since the first engaging groove 313 and the second engaging groove 314 are staggered in the circumferential direction, the engaging protrusion 321 can be directly removed from the insertion opening 311 without first engaging with the first engaging groove 313.

[0082] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0083] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A left atrial appendage occluder, characterized in that: include: an anchor disk having a first central axis; The occluding disk is connected to the anchoring disk, and the occluding disk has a second central axis, and the first central axis and the second central axis are staggered.

2. The occluder according to claim 1, characterized in that: The blocking disc is provided with a connecting portion for connecting the anchor disc.

3. The occluder according to claim 2, characterized in that: The first central axis passes through the connecting portion; or the connecting portion deviates from the first central axis.

4. The occluder according to claim 1, characterized in that The occluder includes an axial distance adjustment component connecting the occluding disk and the anchoring disk.

5. The occluder according to claim 4, characterized in that: The axial distance adjustment component includes: a first connecting member connected to the anchor plate; The second connecting member is connected to the sealing disk, and the first connecting member and the second connecting member are provided with at least two engaging positions in the axial direction.

6. The occluder according to claim 5, characterized in that: The first connecting member is provided with at least two clamping grooves in the axial direction, and the second connecting member is provided with a clamping protrusion clamped with the clamping grooves; or the second connecting member is provided with at least two clamping grooves in the axial direction, and the first connecting member is provided with a clamping protrusion clamped with the clamping grooves.

7. The occluder according to claim 1, characterized in that: The blocking disk is detachably connected to the anchoring disk.

8. The occluder according to claim 1, characterized in that The anchor plate includes an anchor bracket and a first flow-blocking film connected to the anchor bracket.

9. The occluder according to claim 8, characterized in that: The anchoring bracket includes a plurality of support rods arranged in a circumferential direction, both ends of the support rods are connecting ends, or one end of the support rods is a connecting end and the other end of the support rods is a free end.

10. The occluder according to claim 1, characterized in that: The blocking disk includes a blocking bracket and a second flow-blocking membrane connected to the blocking bracket.

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