CN117379129B - Left auricle plugging device capable of being unlocked - Google Patents
Left auricle plugging device capable of being unlocked Download PDFInfo
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- CN117379129B CN117379129B CN202311524465.2A CN202311524465A CN117379129B CN 117379129 B CN117379129 B CN 117379129B CN 202311524465 A CN202311524465 A CN 202311524465A CN 117379129 B CN117379129 B CN 117379129B
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- 238000009940 knitting Methods 0.000 claims abstract description 4
- 210000005248 left atrial appendage Anatomy 0.000 claims description 50
- 229920001971 elastomer Polymers 0.000 claims description 7
- 239000000806 elastomer Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000009954 braiding Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- 208000006011 Stroke Diseases 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 238000002513 implantation Methods 0.000 description 5
- 206010008190 Cerebrovascular accident Diseases 0.000 description 4
- 230000002490 cerebral effect Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 210000003484 anatomy Anatomy 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910001000 nickel titanium Inorganic materials 0.000 description 3
- 206010003658 Atrial Fibrillation Diseases 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
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- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 208000001435 Thromboembolism Diseases 0.000 description 1
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- 238000002441 X-ray diffraction Methods 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
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- 229910052742 iron Inorganic materials 0.000 description 1
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- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 238000002324 minimally invasive surgery Methods 0.000 description 1
- 229920000747 poly(lactic acid) Polymers 0.000 description 1
- 229920002463 poly(p-dioxanone) polymer Polymers 0.000 description 1
- 229920001610 polycaprolactone Polymers 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/12—Surgical instruments, devices or methods for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels or umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B17/12099—Occluding by internal devices, e.g. balloons or releasable wires characterised by the location of the occluder
- A61B17/12122—Occluding by internal devices, e.g. balloons or releasable wires characterised by the location of the occluder within the heart
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/12—Surgical instruments, devices or methods for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels or umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B17/12131—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device
- A61B17/1214—Coils or wires
- A61B17/12145—Coils or wires having a pre-set deployed three-dimensional shape
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B2017/00004—(bio)absorbable, (bio)resorbable or resorptive
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/12—Surgical instruments, devices or methods for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels or umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B2017/1205—Introduction devices
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- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Medical Informatics (AREA)
- Vascular Medicine (AREA)
- Reproductive Health (AREA)
- Engineering & Computer Science (AREA)
- Veterinary Medicine (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Cardiology (AREA)
- Surgical Instruments (AREA)
Abstract
The invention provides an unblocked left auricle plugging device, which comprises a plugging device body, a connecting part, an elastic part, a locking part, an unlocking part and a wire body; the body is arranged into a net structure and comprises a far-end disk surface, a near-end disk surface and a waist part for connecting the far-end disk surface and the near-end disk surface; the connecting part is arranged at the closing-in position of the proximal disc surface and is used for fixing the free ends of the plurality of knitting yarns of the body; the inside of the connecting part is axially provided with a through hole; the elastic part is connected with the first end of the locking part and the first end of the unlocking part; the second end of the locking part is movably arranged outside the axial second end of the connecting part; the locking part is used for at least partially pulling the elastic part from the inner part of the body to the outer part of the body; the second end of the unlocking part penetrates out of the interior of the body through the mesh of the body and is movably arranged outside the body; the unlocking part is used for pulling the elastic part from the outer part of the body to the inner part of the body at least partially; the line body sets up in the inside of body, and the first end and the distal disc face of line body are connected, and the second end and the elastic part of line body are connected.
Description
Technical Field
The invention belongs to the technical field of medical instruments, and particularly relates to an unblocked left auricle occluder.
Background
Stroke is commonly known as stroke. Research data shows that cerebral apoplexy is the first disease causing death of Chinese, and China is one of countries with the highest global risk factor of cerebral apoplexy. Worldwide 1030 thousands of new stroke patients are in year, and the latest statistics in China show that the prevalence rate of Chinese stroke is 1114.8/10 ten thousand and the death rate is 114.8/10 ten thousand. In view of the characteristics of high residue rate, high mortality rate and easy recurrence of cerebral apoplexy, the method for understanding and preventing and treating cerebral apoplexy has great significance to the world, especially China.
Left atrial appendage occlusion is a procedure that prevents the formation of thrombus in the left atrial appendage during atrial fibrillation by occluding the left atrial appendage, thereby reducing the risk of long-term disability or death in patients with atrial fibrillation due to thromboembolism. The main stream products in the market at present are still non-degradable plugging devices made of nickel-titanium alloy metal materials with high rebound resilience. Depending on the memory property of the material, the nickel-titanium alloy plugging device can recover to the original state in vivo without any additional auxiliary device after being released, thereby realizing plugging. However, the current commonly used occluder is a nickel-titanium alloy left auricle occluder, and due to the non-degradable property, the stent can remain in a human body for a long time after an implantation operation, so that a long-term health hazard can be brought. While left atrial appendage occluders made with degradable materials are capable of complete degradation after occlusion is completed, alternative degradable wires do not yet possess the high resilience of existing wires and auxiliary devices must be used to help lock the occluder to the desired state. Meanwhile, due to the characteristics of unidirectional operation and the defect of instrument design of the current minimally invasive surgery, the plugging device which is partially locked and molded by the molding ring auxiliary device has the problem that the plugging device can only be locked in the body but cannot be unlocked. And because the selection of the instrument typically relies on ultrasonic and/or X-ray analysis of the test results, which do not fully reflect the morphology of the left atrial appendage, there is a need to replace or withdraw the occluder during implantation. But current left atrial appendage occlusion devices cannot be retrieved and/or replaced in other sizes after release.
Disclosure of Invention
The invention aims to provide an unlocking left auricle occluder aiming at the defects of the prior art.
In order to solve the technical problems, the invention adopts the following technical scheme: an unlockable left atrial appendage occlusion device comprising: the plugging device comprises a plugging device body, a connecting part, an elastic part, a locking part, an unlocking part and a wire body; the plugging device comprises a plugging device body, a plugging device and a connecting device, wherein the plugging device body is arranged into a net structure and comprises a plugging device distal end disc surface, a plugging device proximal end disc surface and a waist part connecting the plugging device distal end disc surface and the plugging device proximal end disc surface; the connecting part is arranged at the closing-in position of the surface of the proximal end of the plugging device and is used for fixing the free ends of the plurality of knitting wires of the plugging device body; a through hole penetrating through the first axial end and the second axial end of the connecting part is formed in the connecting part; the elastic part is connected with the first end of the locking part and the first end of the unlocking part; the second end of the locking part is movably arranged outside the axial second end of the connecting part; the locking part is used for pulling the elastic part from the inner part of the occluder body to the outer part of the occluder body at least partially; the second end of the unlocking part penetrates out of the inside of the plugging device body through the mesh holes of the plugging device body and is movably arranged outside the plugging device body; the unlocking part is used for pulling the elastic part from the outer part of the occluder body to the inner part of the occluder body at least partially; the wire body is arranged in the plugging device body, the first end of the wire body is connected with the surface of the far-end disc of the plugging device, and the second end of the wire body is connected with the elastic part.
In a specific embodiment, the locking portion for pulling the elastic portion from the interior of the occluder body at least partially to the exterior of the occluder body comprises: the locking part is used for integrally pulling the elastic part from the inside of the occluder body to the outside of the occluder body; and/or the locking part is used for pulling the elastic part from the inner section of the occluder body to the outer section of the occluder body.
In a specific embodiment, the locking portion for integrally pulling the elastic portion from the inside of the occluder body to the outside of the occluder body comprises: the elastic portion is integrally passed through the through hole from the inside of the occluder body by pulling the second end of the locking portion and is disposed outside the axial second end of the connecting portion.
In a specific embodiment, the locking portion for pulling the elastic portion from the inner section of the occluder body to the outside of the occluder body comprises: the elastic portion is caused to pass through the through hole from the inner section of the occluder body and is disposed outside the axial second end of the connecting portion by pulling the second end of the locking portion.
In a specific embodiment, the unlocking portion for pulling the elastic portion from the exterior of the occluder body at least partially to the interior of the occluder body comprises: the unlocking part is used for integrally pulling the elastic part from the outside of the occluder body to the inside of the occluder body; and/or the unlocking part is used for pulling the elastic part from the outer part of the occluder body to the inner part of the occluder body in a segmented way.
In a specific embodiment, the unlocking portion for integrally pulling the elastic portion from the outside of the occluder body to the inside of the occluder body comprises: the elastic part integrally passes through the through hole from the outside of the occluder body to the inside of the occluder body by pulling the second end of the unlocking part.
In a specific embodiment, the unlocking portion for pulling the elastic portion from the outer section of the occluder body to the inner section of the occluder body comprises: the elastic portion is made to pass through the through hole from the outer section of the occluder body into the interior of the occluder body by pulling the second end of the unlocking portion.
In a specific embodiment, the top and/or bottom of the proximal disc surface of the occluder is provided with a concave structure.
In one embodiment, the distal disc surface of the occluder is configured as a button.
In a specific embodiment, the outer diameter of the proximal disc surface of the occluder is greater than the outer diameter of the distal disc surface of the occluder.
In a specific embodiment, the axial cross section of the occluder body is arranged in an i-shape.
In a specific embodiment, the elastic portion is a separate and closed first elastic body.
In a specific embodiment, the elastic part is a plurality of independent second elastic bodies, the shapes of the plurality of second elastic bodies are the same, and the plurality of second elastic bodies are connected together.
In a specific embodiment, the elastic portion is a curved third elastic body, and an outer diameter of an end of the third elastic body near the wire body is smaller than an outer diameter of an end of the third elastic body far from the wire body.
In a specific embodiment, the locking portion is a locking wire and/or a locking lever.
In a specific embodiment, the unlocking portion is an unlocking line.
In a specific embodiment, the number of unlocking lines is a plurality.
In a specific embodiment, the second end of the unlocking part passes out of the mesh of the occluder body via a guiding part arranged on the mesh structure of the occluder body.
In a specific embodiment, the aperture of the axial first end of the through-hole is greater than or equal to the aperture of the axial second end of the through-hole.
In a specific embodiment, when the aperture of the first axial end of the through hole is larger than the aperture of the second axial end of the through hole, the aperture from the first axial end of the through hole to the second axial end of the through hole is gradually reduced.
In a specific embodiment, the occluder body is formed by braiding thick and thin filaments.
In a specific embodiment, the distal disc surface of the occluder and the waist are woven by first braiding wires, the proximal disc surface of the occluder is woven by second braiding wires, and the wire diameter of the first braiding wires is larger than the wire diameter of the second braiding wires.
In a specific embodiment, the left auricle plugging device capable of being unlocked is made of degradable materials.
Compared with the prior art, the invention has the beneficial effects that:
1. the left auricle plugging device capable of being unlocked is provided with the locking part and the unlocking part, so that the left auricle plugging device capable of being unlocked can be locked and/or unlocked simply and efficiently, and the problem that the plugging device is difficult to recover and/or replace after implantation can be effectively solved.
2. The locking part of the left auricle plugging device capable of being unlocked can realize segmented locking, the unlocking part can realize segmented unlocking, and then the height of the plugging device can be adjusted, so that the left auricle plugging device is suitable for more anatomical structures and has a wide application range.
3. The surface of the distal end of the plugging device capable of unlocking the left auricle plugging device is provided with the concave structure, so that the radial supporting force of the plugging device can be enhanced.
4. The plugging device proximal disc surface of the left auricle plugging device capable of being unlocked is arranged into an inner buckling structure, so that the plugging stability of the left auricle plugging device capable of being unlocked can be improved, the plugging effect can be enhanced, and residual shunt is reduced.
5. The outer diameter of the proximal disc surface of the plugging device of the left auricle plugging device capable of being unlocked is larger than that of the distal disc surface of the plugging device, so that the plugging stability of the plugging device can be further improved.
6. The axial section of the plugging device body of the left auricle plugging device capable of being unlocked is I-shaped, so that the compression resistance and the tensile resistance of the plugging device can be enhanced, and the stability of the plugging device can be improved.
7. The unlocking lines of the left auricle plugging device are multiple, the unlocking part can be pulled to unlock conveniently, the stability and the reliability of the unlocking process can be improved, and the unlocking effect is good.
8. The plugging device body of the left auricle plugging device capable of being unlocked is formed by mixed braiding of thick and thin wires, so that the volume of the left auricle plugging device capable of being unlocked after compression can be effectively reduced, and the sheath passing capability of the plugging device can be improved.
9. The left auricle plugging device capable of being unlocked is made of degradable materials, and can effectively realize biodegradation of the plugging device.
Drawings
FIG. 1 shows a schematic structural view of one embodiment of an unlockable left atrial appendage occlusion device of the present invention;
FIG. 2 illustrates a schematic diagram of a locking and/or unlocking procedure of one embodiment of an unlockable left atrial appendage occlusion device of the present invention;
FIG. 3 shows a schematic structural view of another embodiment of the unlockable left atrial appendage occlusion device of the present invention;
FIG. 4 illustrates a schematic diagram of a locking and/or unlocking procedure of one embodiment of an unlockable left atrial appendage occlusion device of the present invention;
fig. 5 shows a schematic structural view of a further embodiment of the unlockable left atrial appendage occlusion device of the present invention;
Fig. 6 shows a schematic diagram of a locking and/or unlocking procedure of a further embodiment of the unlockable left atrial appendage occlusion device of the present invention.
Wherein, 1-the stopper body; 11-the distal disc surface of the occluder; 12-the proximal disc surface of the occluder; 13-waist; 14-braiding wires; 15-mesh; a 2-connection; 21-an axial first end of the connecting part 2; 22-an axial second end of the connecting part 2; 23-through holes; 231-an axial first end of the through bore 23; 232-an axial second end of the through hole 23; 3-an elastic part; a 4-locking part; 5-an unlocking part; 6-a wire body; 7-a concave structure; 8-inner buckle structure.
Detailed Description
The invention will be further described with reference to examples of embodiments shown in the drawings.
Reference to directional terms such as "inner", "outer", "axial" and the like in this invention is by way of reference only to the accompanying drawings. Accordingly, directional terminology is used to describe and understand the invention and is not limiting of the invention.
As shown in fig. 1 to 6, the left auricle-lockable occluder of the present invention comprises: the stopper body 1, the connecting portion 2, the elastic portion 3, the locking portion 4, the unlocking portion 5, and the wire body 6. Wherein,
The occluder body 1 is arranged in a net-like structure. The occluder body 1 comprises an occluder distal disc face 11, an occluder proximal disc face 12 and a waist 13 connecting the occluder distal disc face 11 and the occluder proximal disc face 12.
The connecting part 2 is arranged at the closing-in position of the proximal disc surface 12 of the plugging device and is used for fixing the free ends of the plurality of knitting wires 14 of the plugging device body 1. The inside of the connecting portion 2 is provided with a through hole 23 penetrating the axial first end 21 and the axial second end 22 of the connecting portion 2.
The elastic portion 3 is connected to a first end of the lock portion 4 and a first end of the unlock portion 5.
The second end of the locking portion 4 is movably arranged outside the axial second end 22 of the connecting portion 2. The locking portion 4 serves to pull the elastic portion 3 from the inside of the occluder body 1 at least partially to the outside of the occluder body 1.
The second end of the unlocking part 5 is penetrated from the inside of the occluder body 1 through the mesh 15 of the occluder body 1 and is movably arranged at the outside of the occluder body 1. The unlocking part 5 serves to pull the elastic part 3 from the outside of the occluder body 1 at least partially to the inside of the occluder body 1.
The line body 6 is arranged in the plugging device body 1, the first end of the line body 6 is connected with the surface 11 of the distal end of the plugging device, and the second end of the line body 6 is connected with the elastic part 3. Wherein the wire body 6 has elasticity.
When the locking device is used, the left auricle-capable plugging device can be unlocked to be in a locking state when the elastic part 3 is at least partially pulled to the outside of the plugging device body 1 from the inside of the plugging device body 1 by pulling the second end of the locking part 4, and the left auricle-capable plugging device can not be pushed out or pulled into the sheath. Wherein the locked state comprises a segmented lock and/or a full lock. When the elastic part 3 is pulled from the outside of the occluder body 1 at least partly to the inside of the occluder body 1 by pulling the second end of the unlocking part 5, the unlockable left atrial appendage occluder is in an unlocked state, wherein the unlocked state comprises a segmented unlocking and/or a complete unlocking. When the left auricle plugging device capable of being unlocked is in a complete unlocking state, the left auricle plugging device capable of being unlocked can be pushed out or pulled into the sheath tube. The device can simply and efficiently solve the problem that the left auricle occluder is difficult to withdraw and/or replace after implantation, and has simple structure and convenient use.
In a specific embodiment, as shown in fig. 2, 4, 6, the locking portion 4 for pulling the elastic portion 3 from the inside of the occluder body 1 at least partially to the outside of the occluder body 1 comprises: the locking part 4 is used for integrally pulling the elastic part 3 from the inside of the occluder body 1 to the outside of the occluder body 1; and/or the locking portion 4 is used to pull the elastic portion 3 from the inner section of the occluder body 1 to the outside of the occluder body 1. When the elastic part 3 is pulled to the outside of the occluder body 1 from the inside of the occluder body 1 at least partially by the locking part 4, the left auricle occluder can be locked in an unlocked manner, and the occluder is simple, quick, efficient and good in reliability.
In a specific embodiment, as shown in fig. 2, 4 and 6, the locking portion 4 is used to pull the elastic portion 3 from the inside of the occluder body 1 to the outside of the occluder body 1, and comprises: the second end of the locking part 4 is pulled to enable the elastic part 3 to integrally penetrate through the through hole 23 from the inside of the occluder body 1 and be arranged outside the axial second end 22 of the connecting part 2, so that the integral locking of the left auricle occluder which can be unlocked can be realized, and the occluder is simple, convenient, efficient and good in reliability.
In a specific embodiment, as shown in fig. 2,4 and 6, the locking portion 4 is used to pull the elastic portion 3 from the inner section of the occluder body 1 to the outside of the occluder body 1, comprising: the segmented locking of the unlockable left atrial appendage occlusion device can be achieved by pulling the second end of the locking portion 4 such that the elastic portion 3 passes through the through hole 23 from the inner segment of the occlusion device body 1 and is arranged outside the axial second end 22 of the connecting portion 2. The height of the left auricle plugging device which can be unlocked can be adjusted by utilizing the segmented locking of the left auricle plugging device which can be unlocked, so that the left auricle plugging device is applicable to more anatomical structures.
In a specific embodiment, as shown in fig. 2, 4, 6, the unlocking part 5 for pulling the elastic part 3 from the outside of the occluder body 1 at least partially to the inside of the occluder body 1 comprises: the unlocking part 5 is used for integrally pulling the elastic part 3 from the outside of the occluder body 1 to the inside of the occluder body 1; and/or the unlocking part 5 is used for pulling the elastic part 3 from the outer part of the occluder body 1 to the inside of the occluder body 1 in sections. When the elastic part 3 is pulled to the inside of the occluder body 1 from the outside of the occluder body 1 at least partially by the unlocking part 5, unlocking of the left auricle occluder can be realized, and the occluder is simple, quick and efficient, good in stability and good in reliability.
In a specific embodiment, as shown in fig. 2, 4 and 6, the unlocking part 5 is used for integrally pulling the elastic part 3 from the outside of the occluder body 1 to the inside of the occluder body 1, and comprises: the second end of the unlocking part 5 is pulled to enable the elastic part 3 to integrally penetrate through the through hole 23 from the outside of the plugging device body 1 to enter the plugging device body 1, so that the integral unlocking of the left auricle plugging device which can be unlocked can be realized, and the plugging device is simple, quick, efficient and good in stability.
In a specific embodiment, as shown in fig. 2,4 and 6, the unlocking part 5 is used to pull the elastic part 3 from the outer section of the occluder body 1 to the inside of the occluder body 1, comprising: by pulling the second end of the unlocking part 5 such that the elastic part 3 passes through the through hole 23 from the outside section of the occluder body 1 into the inside of the occluder body 1, a sectional unlocking of the unlockable left atrial appendage occluder can be achieved. The segmented unlocking of the left auricle plugging device can enable the height of the left auricle plugging device to be adjustable, so that the left auricle plugging device is suitable for more anatomical structures.
In a specific embodiment, as shown in fig. 1 and 5, the top and/or bottom of the distal disc surface 11 of the occluder is provided with a concave structure 7 to enhance the radial support force of the unlockable left atrial appendage occlusion device.
In a specific embodiment, as shown in fig. 5, the proximal disc surface 12 of the occluder is configured as an inner buckle structure 8, which can improve the stability of the occlusion of the left atrial appendage occlusion device that can be unlocked, and can enhance the occlusion effect and reduce residual shunt.
In a specific embodiment, as shown in fig. 1,3 and 5, the outer diameter of the proximal disc surface 12 of the occluder is larger than the outer diameter of the distal disc surface 11 of the occluder, so as to further improve the stability of the occlusion of the unlockable left atrial appendage occlusion device.
In a specific embodiment, as shown in fig. 3 and 5, the axial section of the occluder body 1 is configured in an i-shape, so as to enhance the compression and tension resistance of the occluder, and thus improve the stability of the unlockable left atrial appendage occluder.
In a specific embodiment, as shown in fig. 1 and 2, the elastic portion 3 is an independent and closed first elastic body, and has a simple structure, convenient use and good reliability when the left atrial appendage occlusion device can be unlocked. The unlocking part 5 is two unlocking lines, the first ends of the two unlocking lines are symmetrically arranged and are connected with the elastic part 3, the unlocking part 5 can be pulled conveniently to unlock, the stability and the reliability of the unlocking process can be improved, and the unlocking effect is good.
In a specific embodiment, as shown in fig. 1 and 2, the first elastomer is a spherical elastomer or a molded snap.
In a specific embodiment, as shown in fig. 3 and fig. 4, the elastic portion 3 is a plurality of independent second elastic bodies, the shapes of the plurality of second elastic bodies are the same, and the plurality of second elastic bodies are connected together, so that the left atrial appendage occlusion device can be conveniently unlocked and/or can be unlocked in a segmented manner, and the reliability is good. The unlocking part 5 is four unlocking lines, wherein the first ends of two unlocking lines are symmetrically arranged and are connected with the first end of the elastic part 3, the first ends of other two unlocking lines are symmetrically arranged and are connected with the second end of the elastic part 3, the unlocking part 5 can be pulled conveniently to conduct sectional unlocking, the stability and reliability of the sectional unlocking process can be improved, and the unlocking effect is good.
In a specific embodiment, as shown in fig. 3 and 4, the second elastic body is a spherical elastic body or a molded buckle.
In a specific embodiment, as shown in fig. 5 and 6, the elastic portion 3 is a curved third elastic body, and an outer diameter of an end of the third elastic body, which is close to the wire body 6, is smaller than an outer diameter of an end of the third elastic body, which is far away from the wire body 6, so that the left atrial appendage occlusion device can be conveniently unlocked to be locked and/or unlocked in a segmented manner, and the reliability is good. The unlocking part 5 is two unlocking lines, the first end of one unlocking line is connected with one end, close to the line body 6, of the elastic part 3, the first end of the other unlocking line is connected with one end, far away from the line body 6, of the elastic part 3, the unlocking part 5 can be pulled conveniently to conduct sectional unlocking, the stability and reliability of the sectional unlocking process can be improved, and the unlocking effect is good.
In a specific embodiment, as shown in fig. 5 and 6, the third elastomer is a spring.
In a specific embodiment, as shown in fig. 1-6, the locking portion 4 is a locking wire and/or a locking bar. When the locking part 4 is a locking wire, the structure is simple, the use is convenient, and the reliability is good. When the locking portion 4 is a hard locking lever, it can be pushed in the opposite direction to be locked and unlocked.
In a specific embodiment, the number of the locking parts 4 is multiple, so that the stability and reliability of the locking process of the unlockable left atrial appendage occlusion device can be improved, and the locking effect is good.
In a specific embodiment, as shown in fig. 1 to 6, the unlocking part 5 is an unlocking line, and has a simple structure, convenient use and good reliability.
In a specific embodiment, the second end of the unlocking part 5 passes out of the mesh 15 of the occluder body 1 via a guiding part arranged on the mesh structure of the occluder body 1. The guide part can improve the convenience, stability and reliability of the unlocking line movement.
In a specific embodiment, as shown in fig. 1 to 6, the aperture of the axial first end 231 of the through hole 23 is greater than or equal to the aperture of the axial second end 232 of the through hole 23, so that the elastic portion 3 can be pulled into the through hole 23 from the inside of the occluder body 1, and the elastic portion 3 can be easily passed out of the through hole 23 from the inside of the occluder body 1 axially, and can be firmly locked, and the stability of the movement of the elastic portion 3 can be improved.
In a specific embodiment, as shown in fig. 5 and 6, when the aperture of the axial first end 231 of the through hole 23 is larger than the aperture of the axial second end 232 of the through hole 23, the aperture from the aperture of the axial first end 231 of the through hole 23 to the aperture of the axial second end 232 of the through hole 23 is gradually reduced, so that the elastic portion 3 can be further conveniently pulled from the inside of the occluder body 1 to the outside of the axial second end 22 of the connecting portion 2, and the locking can be more secure, and the moving stability of the elastic portion 3 can be further improved.
In a specific embodiment, as shown in fig. 1, the occluder body 1 is formed by braiding thick and thin wires in a mixed mode, so that the volume of the left auricle occluder which can be unlocked after compression can be effectively reduced, and the sheath passing capability of the left auricle occluder which can be unlocked can be improved. I.e., the plurality of braided filaments 14 comprise thick filaments.
In a specific embodiment, as shown in fig. 3, the occluder body 1 is woven from single diameter fibers, and has a simple structure and is convenient for molding. I.e. the plurality of filaments 14 comprises a plurality of filaments of the same diameter.
In a specific embodiment, as shown in fig. 5, the occluder distal disc face 11 and the waist 13 are woven with first braided wires 141 and the occluder proximal disc face 12 is woven with second braided wires 142, the wire diameter of the first braided wires 141 being greater than the wire diameter of the second braided wires 142. Wherein, the second braiding wires 142 can improve the sheath passing capability of the proximal disc surface 12 of the occluder, and the first braiding wires 141 can improve the supporting strength of the distal disc surface 11 and the waist 13 of the occluder. I.e., plurality of braided filaments 14 includes first braided filaments 141 and second braided filaments 142.
In a specific embodiment, the left atrial appendage occlusion device is made of a degradable material, including a degradable polymer material (e.g., polylactic acid, polydioxanone, and/or polycaprolactone) and/or a degradable metal material (e.g., a degradable magnesium-based, zinc-based, and/or iron-based material) to enable biodegradation of the left atrial appendage occlusion device.
When the device is used, the second end of the locking part 4 is pulled to enable the elastic part 3 to be at least partially pulled to the outside of the occluder body 1 from the inside of the occluder body 1, so that the left auricle occluder can be unlocked and is in a locked state, and the left auricle occluder can not be pushed out or pulled into a sheath tube at the moment. Wherein the locked state comprises a segmented lock and/or a full lock. By pulling the second end of the unlocking part 5 such that the elastic part 3 is pulled at least partly from the outside of the occluder body 1 to the inside of the occluder body 1, the left atrial appendage occluder can be unlocked in an unlocked state, wherein the unlocked state comprises a segmented unlocking and/or a complete unlocking. When the left auricle plugging device capable of being unlocked is in a complete unlocking state, the left auricle plugging device capable of being unlocked can be pushed out or pulled into the sheath tube. The device can simply and efficiently solve the problem that the left auricle occluder is difficult to withdraw and/or replace after implantation, and has simple structure and convenient use.
The scope of the present invention is not limited to the above-described embodiments, and it is apparent that various modifications and variations can be made to the present invention by those skilled in the art without departing from the scope and spirit of the invention. It is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (22)
1. An unlockable left atrial appendage occlusion device comprising: the plugging device comprises a plugging device body (1), a connecting part (2), an elastic part (3), a locking part (4), an unlocking part (5) and a wire body (6); wherein,
The plugging device body (1) is arranged into a net structure, and the plugging device body (1) comprises a plugging device distal disc surface (11), a plugging device proximal disc surface (12) and a waist (13) connected with the plugging device distal disc surface (11) and the plugging device proximal disc surface (12);
the connecting part (2) is arranged at the closing-in position of the proximal disc surface (12) of the plugging device and is used for fixing the free ends of the plurality of knitting wires (14) of the plugging device body (1); a through hole (23) penetrating through the first axial end (21) and the second axial end (22) of the connecting part (2) is formed in the connecting part (2);
the elastic part (3) is connected with the first end of the locking part (4) and the first end of the unlocking part (5);
the second end of the locking portion (4) is movably arranged outside the axial second end (22) of the connecting portion (2); the locking part (4) is used for pulling the elastic part (3) from the inside of the occluder body (1) to the outside of the occluder body (1);
The second end of the unlocking part (5) penetrates out of the inside of the plugging device body (1) through the mesh (15) of the plugging device body (1) and is movably arranged outside the plugging device body (1); the unlocking part (5) is used for pulling the elastic part (3) from the outside of the occluder body (1) to the inside of the occluder body (1);
the wire body (6) is arranged in the plugging device body (1), a first end of the wire body (6) is connected with a surface (11) of the far end of the plugging device, and a second end of the wire body (6) is connected with the elastic part (3).
2. The unlockable left atrial appendage occlusion device according to claim 1, wherein the locking part (4) for pulling the elastic part (3) from the interior of the occlusion device body (1) at least partly to the exterior of the occlusion device body (1) comprises: the locking part (4) is used for integrally pulling the elastic part (3) from the inside of the occluder body (1) to the outside of the occluder body (1); and/or the locking part (4) is used for pulling the elastic part (3) from the inner section of the occluder body (1) to the outside of the occluder body (1).
3. The unlockable left atrial appendage occlusion device according to claim 2, wherein the locking part (4) for integrally pulling the elastic part (3) from the interior of the occlusion device body (1) to the exterior of the occlusion device body (1) comprises: the elastic part (3) is made to pass through the through hole (23) entirely from the inside of the occluder body (1) by pulling the second end of the locking part (4) and is arranged outside the axial second end (22) of the connecting part (2).
4. The unlockable left atrial appendage occlusion device according to claim 2, wherein the locking part (4) for pulling the elastic part (3) from an inner section of the occlusion device body (1) to an outer section of the occlusion device body (1) comprises: -passing the elastic portion (3) from the inner section of the occluder body (1) through the through hole (23) and being arranged outside the axial second end (22) of the connecting portion (2) by pulling the second end of the locking portion (4).
5. The unlockable left atrial appendage occlusion device according to claim 2, wherein the unlocking part (5) for pulling the elastic part (3) from the outside of the occlusion device body (1) at least partly to the inside of the occlusion device body (1) comprises: the unlocking part (5) is used for integrally pulling the elastic part (3) from the outside of the occluder body (1) to the inside of the occluder body (1); and/or the unlocking part (5) is used for pulling the elastic part (3) from the outer part of the occluder body (1) to the interior of the occluder body (1).
6. The unlockable left atrial appendage occlusion device according to claim 5, wherein the unlocking part (5) is adapted to pull the elastic part (3) from the outside of the occlusion device body (1) to the inside of the occlusion device body (1) in its entirety comprising: the elastic part (3) integrally passes through the through hole (23) from the outside of the occluder body (1) to the inside of the occluder body (1) by pulling the second end of the unlocking part (5).
7. The unlockable left atrial appendage occlusion device according to claim 5, wherein the unlocking part (5) for pulling the elastic part (3) from an outer segment of the occlusion device body (1) to an inner segment of the occlusion device body (1) comprises: -passing the elastic portion (3) from the outer section of the occluder body (1) through the through hole (23) into the interior of the occluder body (1) by pulling the second end of the unlocking portion (5).
8. The unlockable left atrial appendage occlusion device according to claim 1, characterized in that the top and/or bottom of the distal disc surface (11) of the occlusion device is provided with a concave structure (7).
9. The unlockable left atrial appendage occlusion device of claim 1, wherein the occlusion device proximal disc surface (12) is arranged as a button structure (8).
10. The unlockable left atrial appendage occlusion device of claim 1, wherein the occlusion device proximal disc surface (12) has an outer diameter that is larger than the outer diameter of the occlusion device distal disc surface (11).
11. The unlockable left atrial appendage occlusion device according to claim 10, characterized in that the axial cross-section of the occlusion device body (1) is arranged in an i-shape.
12. The unlockable left atrial appendage occlusion device according to claim 1, wherein the elastic portion (3) is a separate and closed first elastomer.
13. The left atrial appendage occlusion device of claim 1, wherein the elastic portion (3) is a plurality of separate second elastic bodies, the plurality of second elastic bodies being identical in shape and the plurality of second elastic bodies being connected together.
14. The unlockable left atrial appendage occlusion device according to claim 1, wherein the elastic portion (3) is a curved third elastomer, the outer diameter of the end of the third elastomer close to the wire body (6) being smaller than the outer diameter of the end of the third elastomer remote from the wire body (6).
15. The unlockable left atrial appendage occlusion device of claim 1, wherein the locking part (4) is a locking wire and/or a locking rod and the unlocking part (5) is an unlocking wire.
16. The unlockable left atrial appendage occlusion device of claim 15, wherein the number of unlocking lines is a plurality.
17. The unlockable left atrial appendage occlusion device according to claim 1, characterized in that the second end of the unlocking part (5) passes out of the mesh (15) of the occlusion device body (1) by means of a guiding part, which is arranged on the mesh structure of the occlusion device body (1).
18. The unlockable left atrial appendage occlusion device of claim 1, wherein the aperture of the axial first end (231) of the through-hole (23) is greater than or equal to the aperture of the axial second end (232) of the through-hole (23).
19. The unlockable left atrial appendage occlusion device of claim 18, wherein the aperture from the axial first end (231) of the through-hole (23) to the axial second end (232) of the through-hole (23) is tapered when the aperture of the axial first end (231) of the through-hole (23) is larger than the aperture of the axial second end (232) of the through-hole (23).
20. The unlockable left atrial appendage occlusion device according to claim 1, wherein the occlusion device body (1) is made of mixed thick and thin filaments.
21. The unlockable left atrial appendage occlusion device of claim 1, wherein the occlusion device distal disc surface (11) and the waist portion (13) are braided with a first braided wire (141), the occlusion device proximal disc surface (12) is braided with a second braided wire (142), and the wire diameter of the first braided wire (141) is larger than the wire diameter of the second braided wire (142).
22. The unlockable left atrial appendage occlusion device of claim 1, wherein the unlockable left atrial appendage occlusion device is made of a degradable material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311524465.2A CN117379129B (en) | 2023-11-15 | 2023-11-15 | Left auricle plugging device capable of being unlocked |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311524465.2A CN117379129B (en) | 2023-11-15 | 2023-11-15 | Left auricle plugging device capable of being unlocked |
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| CN117379129A CN117379129A (en) | 2024-01-12 |
| CN117379129B true CN117379129B (en) | 2024-05-24 |
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| CN113288312A (en) * | 2021-06-03 | 2021-08-24 | 上海形状记忆合金材料有限公司 | Membrane-free partially degradable left atrial appendage occluder |
| WO2023124440A1 (en) * | 2021-12-30 | 2023-07-06 | 先健科技(深圳)有限公司 | Occluder and occluding system |
| CN219538373U (en) * | 2023-02-08 | 2023-08-18 | 上海微创医疗器械（集团）有限公司 | Plugging device |
| WO2023160665A1 (en) * | 2022-02-25 | 2023-08-31 | 上海形状记忆合金材料有限公司 | Occluder |
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| WO2020056058A1 (en) * | 2018-09-13 | 2020-03-19 | Ozgur Kocaturk | Devices and methods for closing openings in tissue structures |
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| CN101917911A (en) * | 2007-07-27 | 2010-12-15 | 微排放器公司 | Detachable coil incorporating stretch resistance |
| WO2017148102A1 (en) * | 2016-03-03 | 2017-09-08 | 上海普实医疗器械科技有限公司 | Left atrial appendage occluder and fabricating method therefor |
| CN113288312A (en) * | 2021-06-03 | 2021-08-24 | 上海形状记忆合金材料有限公司 | Membrane-free partially degradable left atrial appendage occluder |
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| CN117379129A (en) | 2024-01-12 |
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