CN106175867A - A kind of occluder for left auricle and preparation method thereof - Google Patents
A kind of occluder for left auricle and preparation method thereof Download PDFInfo
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- CN106175867A CN106175867A CN201610768300.3A CN201610768300A CN106175867A CN 106175867 A CN106175867 A CN 106175867A CN 201610768300 A CN201610768300 A CN 201610768300A CN 106175867 A CN106175867 A CN 106175867A
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- left auricle
- connector
- occluder
- linkage section
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- 238000002360 preparation method Methods 0.000 title claims abstract description 7
- 229910001000 nickel titanium Inorganic materials 0.000 claims description 20
- HLXZNVUGXRDIFK-UHFFFAOYSA-N nickel titanium Chemical compound [Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni] HLXZNVUGXRDIFK-UHFFFAOYSA-N 0.000 claims description 19
- 238000010438 heat treatment Methods 0.000 claims description 12
- 229910045601 alloy Inorganic materials 0.000 claims description 8
- 239000000956 alloy Substances 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 7
- 230000000903 blocking effect Effects 0.000 claims description 6
- 238000009954 braiding Methods 0.000 claims description 4
- 238000004513 sizing Methods 0.000 claims description 3
- 206010003658 Atrial Fibrillation Diseases 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 208000007536 Thrombosis Diseases 0.000 description 4
- 210000004369 blood Anatomy 0.000 description 3
- 239000008280 blood Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 210000001008 atrial appendage Anatomy 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 210000002837 heart atrium Anatomy 0.000 description 2
- 206010008088 Cerebral artery embolism Diseases 0.000 description 1
- 206010008190 Cerebrovascular accident Diseases 0.000 description 1
- 208000005189 Embolism Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 208000006011 Stroke Diseases 0.000 description 1
- 229920004933 Terylene® Polymers 0.000 description 1
- 208000001435 Thromboembolism Diseases 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 238000002266 amputation Methods 0.000 description 1
- 206010003119 arrhythmia Diseases 0.000 description 1
- 230000006793 arrhythmia Effects 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008828 contractile function Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000010102 embolization Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 201000010849 intracranial embolism Diseases 0.000 description 1
- 210000005248 left atrial appendage Anatomy 0.000 description 1
- 206010025482 malaise Diseases 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 208000002040 neurosyphilis Diseases 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- 150000002815 nickel Chemical class 0.000 description 1
- 231100000862 numbness Toxicity 0.000 description 1
- 231100000915 pathological change Toxicity 0.000 description 1
- 230000036285 pathological change Effects 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 210000003492 pulmonary vein Anatomy 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
- A61B17/12027—Type of occlusion
- A61B17/12031—Type of occlusion complete occlusion
-
- 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
- A61B17/12168—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device having a mesh structure
-
- 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
- A61B17/12168—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device having a mesh structure
- A61B17/12172—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device having a mesh structure having a pre-set deployed three-dimensional shape
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B2017/00526—Methods of manufacturing
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- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Molecular Biology (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Reproductive Health (AREA)
- Medical Informatics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Cardiology (AREA)
- Prostheses (AREA)
Abstract
The invention discloses a kind of occluder for left auricle, including closeouts, connector and fixture；Closeouts is connected with connector；Fixture is set on connector or connector is set on fixture；Occluder for left auricle has the first state and the second state；In the second condition, fixture can be movable relative to connector.The present invention also provides for the preparation method of this occluder for left auricle, simple.Occluder for left auricle involved in the present invention is owing to connector and fixture are for being flexibly connected, make closeouts and the fixture can angulation and length more freely, thus be applicable to the left auricle of different structure, and reduce the probability of happening of left auricle mouth stopper residual leakage.
Description
Technical field
The present invention relates to a kind of medical apparatus and instruments, particularly relate to a kind of apparatus treating heart left auricle pathological changes, specifically
It it is a kind of occluder for left auricle.It is additionally related to the preparation method of this apparatus.
Background technology
During atrial fibrillation, contractile function is lost in atrium, and blood is easily in atrium, especially at left auricle, is retarded by silt and forms blood
Bolt, can cause cerebral embolism, limb artery embolization etc. along with blood to whole body everywhere after thrombus breaks loose, cause apoplexy, limbs fiber crops
Numbness, severe patient half a lifetime or general paralysis, even need amputation.In atrial fibrillation patient, the thrombosis of more than 90% ceases manner of breathing with left auricle
Close；And as modal perpetual arrhythmia, atrial fibrillation sickness rate in general population is 0.5% to 1.5%.By envelope
The formation of thrombosis in left auricle when stifled left auricle prevents atrial fibrillation, thus reduce patients with atrial fibrillation and caused by thromboembolism the most residual
Disease or the risk of death.
Differing greatly owing to the form of left auricle shows in different individualities, existing stopper is often difficult in adapt to not
With individual demand, easily occur that portion of residual leaks when blocking left auricle, it is impossible to completely closing left auricle, causing can not be complete
The effectively formation of thrombosis in prevention left auricle.
Summary of the invention
The present invention is to solve the problems referred to above, it is proposed that a kind of novel occluder for left auricle so that the generation of residual leakage
Probability is greatly reduced.
The invention discloses a kind of occluder for left auricle, including closeouts, connector and fixture；Closeouts and connector
It is connected；Fixture is set on connector or connector is set on fixture；Occluder for left auricle have the first state and
Second state；In the second condition, fixture can be movable relative to connector.
Further, connector is stainless steel material.
Further, in the first state, occluder for left auricle is contraction-like, it is adaptable to conveying；In the second condition, left
Atrial appendage occlusion device is open-shaped, it is adaptable to block.
In a preferred embodiment, fixture is set on connector.
Further, connector includes the first linkage section, the second linkage section；The diameter of the first linkage section is less than fixture
Internal diameter, the diameter of the second linkage section is more than the internal diameter of fixture so that in the second condition, fixture can be on the first linkage section
Activity, but will not depart from connector from the second linkage section.
Further, connector also includes the 3rd linkage section, the diameter of the 3rd linkage section equal to the internal diameter of fixture, first
Linkage section, the 3rd linkage section, the second linkage section are sequentially connected with.
Further, from the diameter of the diameter of the first linkage section to the 3rd linkage section more equal to the diameter of the second linkage section
It is continuously, little by little to become big.
Further, the length of the 3rd linkage section is 2～3mm.
In a preferred embodiment, connector includes the first connecting element and the second connecting element；First connects unit
Part is connected with closeouts；Second connecting element is connected with the first connecting element；Fixture is set in the second connecting element.
Further, the second connecting element is from first end of its section being set in fixture to the second connecting element
It is the first linkage section, the 3rd linkage section and the second linkage section that portion is sequentially set；The diameter of the first linkage section is less than fixture
Internal diameter, the diameter of the 3rd linkage section is equal to the internal diameter of fixture, and the diameter of the second linkage section is more than the internal diameter of fixture so that Gu
Locking member can be movable in the second connecting element, but will not depart from the second connecting element at first end.
Further, closeouts includes blocking head and closure waist；Closure head is connected with closure waist.
Further, the length of closure waist is 3～5mm.
Further, the cross section of closure waist is circular, and the diameter of the cross section of closure waist is 14～34mm.
Further, closure head is circular, and its diameter is than the diameter big 4～6mm of the cross section of closure waist.
Further, closure waist is round table-like, and the area of the cross section of its that end being connected with closure head is more than another
The area of the cross section of one end.
Further, closure head is in the form of annular discs.
Further, closure head and closure waist are formed by nitinol alloy wire braiding.
Further, closeouts also includes support, for fixing the two ends of nitinol alloy wire.
Further, the material of support is rustless steel.
Further, in the first state, occluder for left auricle is contracted in sheath pipe, fixture front, closeouts rear,
Its medium-height trestle is backmost.
Further, choked flow film is also included；Choked flow film is arranged in closeouts.
Further, choked flow film is additionally arranged on fixture.
Further, closeouts includes blocking head and closure waist；Closure head is connected with closure waist；Choked flow film sets
Put in outer surface and/or the inside blocking head.
Further, quantity >=1 of choked flow film.
Further, during choked flow film is additionally arranged at closure waist.
Further, choked flow film is pet (terylene) film..
Further, fixture includes barb.
Further, barb is J-shaped.
Further, the quantity of barb is 6～12.
In another preferred embodiment, connector is set on fixture.
Further, fixture includes the first canned paragraph, the second canned paragraph；The diameter of the first canned paragraph is less than connector
Internal diameter, the diameter of the second canned paragraph is more than the internal diameter of connector so that in the second condition, connector can be on the first canned paragraph
Activity, but will not depart from fixture from the second canned paragraph.
Further, fixture also includes the 3rd canned paragraph, the diameter of the 3rd canned paragraph equal to the internal diameter of connector, first
Canned paragraph, the 3rd canned paragraph, the second canned paragraph are sequentially connected with.
Further, from the diameter of the diameter of the first canned paragraph to the 3rd canned paragraph more equal to the diameter of the second canned paragraph
It is continuously, little by little to become big.
Further, the length of the 3rd canned paragraph is 2～3mm.
Further, the material of fixture is Nitinol.
The invention also discloses the preparation method of a kind of occluder for left auricle as above, comprise the following steps:
Step one, braiding nitinol alloy wire also carry out heat treatment to it, cylindrical net after being shaped；
Cylindrical net after step 2, the sizing obtained by support fixing step one, obtains the Nitinol net that two ends are fixing；
The Nitinol net that step 3, two ends step 2 obtained are fixed loads the first mould, heat treatment, is blocked
Part；
Step 4, Nitinol pipe is cut into basket shape, put into the second mould, heat treatment, obtain fixture；
The fixture connector that step 5, closeouts step 3 obtained obtain with step 4 is connected；
Step 6, step 5 obtain be connected to the closeouts of connector in and fixture surface all sew on choked flow film,
Obtain occluder for left auricle.
Further, the heat treatment in step one refers to be incubated 20～50min at 270～340 DEG C.
Further, the heat treatment in step 3 refers at 410～590 DEG C, it be shaped.
Further, the heat treatment in step 4 refers to be incubated 9～40min at 410～590 DEG C.
The invention has the beneficial effects as follows:
1, it is set in outside connector due to fixture, and the diameter of the first linkage section is less than the internal diameter of this fixture, second
The diameter of linkage section is more than the internal diameter of this fixture；Or owing to connector is set in outside fixture, and the first canned paragraph is straight
Footpath less than the internal diameter of this connector, the diameter of the second canned paragraph more than the internal diameter of this connector, hence in so that fixture be connected
Part is to be flexibly connected, further such that this fixture and closeouts can angulation and length more freely, thus be applicable to
The left auricle of different structure, also reduces the probability of happening of left auricle mouth stopper residual leakage simultaneously.
2, J-shaped barb is compared to the advantage of V-shaped barb of the prior art: can push-and-pull sheath pipe repeatedly, no
Occluder for left auricle can be damaged, facilitate doctor to operate and reliability of performing the operation.
3, the closure waist structure of closeouts is conducive to making closeouts at left auricle mouth from central alignment, makes closure head
Front end face area is less, and resistance flowing effect is more preferable, less front end face area occluder for left auricle can be avoided orifices of pulmonary veins and
Mitral impact, reduces the risk that occluder for left auricle uses.
4, closure head, closure waist and fixture use Nitinol can bear the first state and the second state it
Between change and the epimegetic that produces becomes, be used for multiple times and be difficult to lose shape.
Below in conjunction with accompanying drawing, the technique effect of design, concrete structure and the generation of the present invention is described further, to fill
Ground is divided to understand the purpose of the present invention, feature and effect.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of occluder for left auricle detailed description of the invention in the second condition of the present invention
Figure.
Fig. 2 is connector and the cross-sectional view of fixture of a specific embodiment of the present invention.
Fig. 3 is connector and the perspective view of fixture of a specific embodiment of the present invention.
Fig. 4 is the structural representation of a kind of occluder for left auricle detailed description of the invention in the first state of the present invention
Figure.
Fig. 5 is the structural representation of the barb of a specific embodiment of the present invention.
Fig. 6 is the structural representation of a kind of occluder for left auricle barb of the prior art.
Fig. 7 is connector and the cross-sectional view of fixture of the another embodiment of the present invention.
Detailed description of the invention
Embodiment 1
Fig. 1 shows the occluder for left auricle that the present invention relates to preferred embodiment in the second condition.At the present embodiment
In, this occluder for left auricle includes closeouts, connector 2, fixture 3, choked flow film 4.This closeouts includes support 11, block head
Portion 12 and closure waist 13.Closure head 12 and closure waist 13 connect, and are all netted with nitinol alloy wire braiding
Structure.The length of closure waist is 3～5mm.The cross section of closure waist is circular, and the diameter of the cross section of closure waist is 14
～34mm.Closure head is circular, and its diameter is than the diameter big 4～6mm of the cross section of closure waist.This nickel fixed by support 11
The two ends of titanium alloy wire, play a supporting role in the second condition.Choked flow film 4 is arranged on closure head 12 and closure waist 13
In, there are 3 choked flow films 4 as can be seen from Figure 1.In fact can also be at the outer surface of front end face 121 of closure head 12 or interior
Surface covers upper choked flow film, it is also possible to cover choked flow film at the outer surface of fixture.Quantity >=1 of choked flow film.Fixture 3
Including barb 31, barb 31 is in J-shaped, as shown in Figure 5.Barb 31 of the prior art is in the shape of the letter V, as shown in Figure 6.
Fig. 2 and Fig. 3 shows that the connector of a detailed description of the invention of the occluder for left auricle that the present invention relates to is with solid
Locking member.This connector includes the first connecting element 21 and the second connecting element 22.First connecting element 21 includes connecting hole 211.
The nitinol alloy wire of closure head 12 and closure waist 13 through connecting hole 211 thus can be connected with the first connecting element 21.
Support 11 is the most solderable or is otherwise connected with the first connecting element 21.First connecting element 21 also with the second connecting element
22 are connected.Fixture 3 is set in the second connecting element 22.Second connecting element 22 is set in the district in fixture 3 from it
It is the first linkage section, the 3rd linkage section and the second linkage section that section is sequentially set to the first end 221 of the second connecting element 22.
The diameter of the first linkage section is less than the internal diameter of fixture 3, and the diameter of the 3rd linkage section is equal to the internal diameter of fixture 3, and second connects
The diameter of section is more than the internal diameter of fixture 3 so that fixture 3 can be movable in the second connecting element 22, but will not be from the
Depart from the second connecting element 22 at one end 221.In order to help to be better understood from the present invention, show with ab segment table in fig. 2
One linkage section, bc segment table shows that the 3rd linkage section, cd segment table show the second linkage section.It can be seen that from the first linkage section to the 3rd even
The section of connecing, then to the second linkage section, they piece together in funnelform outline.Connect from the diameter of the first linkage section to the 3rd
The diameter of section, then be continuously, little by little to become big to the diameter of the second linkage section.The internal diameter having one section in fixture 3 is also even
Continuous ground, little by little become big so that it is with the diameter of the 3rd linkage section to adaptation.The length of the 3rd linkage section is 2～3mm.Although
In the present embodiment, connector includes the first connecting element and the second connecting element, but can also be divided into two and connect unit
Part, directly represents with connector.Same, in other embodiments, connector can not include the 3rd linkage section.Always
It, the many conventional change done on the basis of the present invention is all in protection scope of the present invention etc.
There is the first state and the second state, i.e. contraction state and open configuration in the occluder for left auricle that the present invention relates to,
Conversion between the two is carried out by following operation: when the second state, pulls support 11 to make it drive a whole left side
Atrial appendage occlusion device is stretched and is punctured into slim-lined construction and enters sheath pipe, presents the first state (as shown in Figure 4).Release from sheath pipe
Occluder for left auricle.Occluder for left auricle once leaves sheath pipe, then launch in the second state (as shown in Figure 1).During work, by a left side
Atrial appendage occlusion device is transported to left auricle position, then release occluder for left auricle from sheath pipe so that left auricle seals by sheath pipe
Left auricle is closed by stifled device.Left auricle is pocket-like, owing to occluder for left auricle order out from sheath pipe is first fixture,
Then closeouts, after therefore having blocked, be in left auricle bag mouth is closeouts, and fixture is positioned at left auricle bag.
Embodiment 2
Fig. 7 shows connector and the fixture of the another embodiment of the present invention.As it is shown in fig. 7, connector 2
It is set on fixture 3.The first canned paragraph that fixture 3 includes being sequentially connected with, the 3rd canned paragraph, the second canned paragraph；First is solid
The diameter of the section of determining is less than the internal diameter of connector 2, and the diameter of the 3rd canned paragraph is equal to the internal diameter of described connector 2, the second canned paragraph
Diameter more than the internal diameter of connector 2 so that in the second condition, connector 2 can be movable on the first canned paragraph, but will not
Depart from fixture 3 from the second canned paragraph.In order to help to be better understood from the present invention, show that first fixes with ef segment table in the figure 7
Section, fg segment table shows that the 3rd canned paragraph, gh segment table show the second canned paragraph.It can be seen that it is solid from the diameter of the first canned paragraph to the 3rd
The diameter of the section of determining, then be all continuously, little by little to become big to the diameter of the second canned paragraph.Connector 2 has the internal diameter of a section also
It is continuously, little by little to become big so that it is with the diameter of the 3rd canned paragraph to adaptation.The length of the 3rd canned paragraph is 2～3mm.
Other are similar to that embodiment 1.
Embodiment 3
The preparation method of the occluder for left auricle that the present invention relates to:
1, by nitinol alloy wire machinery braider or hand woven mould, is woven into network structure, and carries out heat treatment
(270～340 DEG C, 20～50min), cylindrical net after being shaped.
Net cylindrical after sizing is intercepted suitable length (15～80mm) by 2, and two ends are fixed by support, and support can use
It is online that the mode of mechanical grip is connected to Nitinol, it is also possible to the mode welded with laser welding or microbeam is connected to NiTi
On alloy network, obtain the Nitinol net that two ends are fixing.Support can be stainless steel material.
The Nitinol net that two ends are fixing is loaded the first mould by 3, at 410～590 DEG C of heat treatment shapings, obtains described envelope
Blocking piece.
4 are laser-cut into basket shape by effective for Nitinol, put into the second mould is carried out heat treatment (410～590 DEG C, 9
～40min), make fixture.
Closeouts and fixture connector are connected by 5.Connector can be stainless steel material.
6 in being connected in the closeouts of connector of obtaining of step 5 and choked flow film is all sewed on fixture surface, obtains the left heart
Ear stopper.Choked flow film can be pet film.
The preferred embodiment of the present invention described in detail above.Should be appreciated that the ordinary skill of this area is without wound
The property made work just can make many modifications and variations according to the design of the present invention.Therefore, all technical staff in the art
The most on the basis of existing technology by the available technology of logical analysis, reasoning, or a limited experiment
Scheme, all should be in the protection domain being defined in the patent claims.
Claims (10)
1. an occluder for left auricle, it is characterised in that include closeouts, connector and fixture；Described closeouts is with described
Connector is connected；Described fixture is set on described connector or described connector is set on described fixture；Described
Occluder for left auricle has the first state and the second state；In said second condition, described fixture can be relative to described company
Fitting is movable.
2. occluder for left auricle as claimed in claim 1, it is characterised in that in said first condition, described left auricle seals
Stifled device is contraction-like, it is adaptable to conveying；In said second condition, described occluder for left auricle is open-shaped, it is adaptable to carry out
Closure.
3. occluder for left auricle as claimed in claim 1, it is characterised in that described fixture is set on described connector；
Described connector includes the first linkage section, the second linkage section；The diameter of described first linkage section is less than the internal diameter of described fixture,
The diameter of described second linkage section is more than the internal diameter of described fixture so that in said second condition, and described fixture can be
Activity on described first linkage section, but will not depart from described connector from described second linkage section.
4. occluder for left auricle as claimed in claim 1, it is characterised in that described connector includes the first connecting element and the
Two connecting elements；Described first connecting element is connected with described closeouts；Described second connecting element is connected unit with described first
Part is connected；Described fixture is set in described second connecting element.
5. occluder for left auricle as claimed in claim 4, it is characterised in that described second connecting element is set in institute from it
Stating section in fixture and being sequentially set to the first end of described second connecting element is the first linkage section, the 3rd linkage section
With the second linkage section；The diameter of described first linkage section is less than the internal diameter of described fixture, the diameter etc. of described 3rd linkage section
In the internal diameter of described fixture, the diameter of described second linkage section is more than the internal diameter of described fixture so that described fixture can
With movable in described second connecting element, but will not depart from described second connecting element at described first end.
6. occluder for left auricle as claimed in claim 1, it is characterised in that described closeouts includes blocking head and closure waist
Portion；Described closure head is connected with described closure waist.
7. occluder for left auricle as claimed in claim 1, it is characterised in that also include choked flow film；Described choked flow film is arranged on
In described closeouts.
8. occluder for left auricle as claimed in claim 1, it is characterised in that described fixture includes that barb, described barb are J
Font.
9. occluder for left auricle as claimed in claim 1, it is characterised in that described connector is set on described fixture,
Described fixture includes the first canned paragraph, the second canned paragraph；The diameter of described first canned paragraph is less than the internal diameter of described connector,
The diameter of described second canned paragraph is more than the internal diameter of described connector so that in said second condition, and described connector can be
Activity on described first canned paragraph, but will not depart from described fixture from described second canned paragraph.
10. the preparation method of an occluder for left auricle as claimed in claim 1, it is characterised in that comprise the following steps:
Step one, braiding nitinol alloy wire also carry out heat treatment to it, cylindrical net after being shaped；
Step 2, fix cylindrical net after the sizing that described step one obtains with support, obtain the Nitinol net that two ends are fixing；
The Nitinol net that step 3, the two ends described step 2 obtained are fixed loads the first mould, heat treatment, obtains described
Closeouts；
Step 4, Nitinol pipe is cut into basket shape, put into the second mould, heat treatment, obtain described fixture；
The fixture that step 5, the closeouts described step 3 obtained obtain with described step 4 is connected with described connector；
Step 6, described step 5 obtain be connected to the closeouts of connector in and fixture surface all sew on choked flow film,
Obtain described occluder for left auricle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610768300.3A CN106175867A (en) | 2016-08-30 | 2016-08-30 | A kind of occluder for left auricle and preparation method thereof |
Applications Claiming Priority (1)
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107440761A (en) * | 2017-07-20 | 2017-12-08 | 上海心玮医疗科技有限公司 | A kind of plugging device with embedded steel bushing |
| CN108938034A (en) * | 2017-05-23 | 2018-12-07 | 杭州诺茂医疗科技有限公司 | A kind of occluder for left auricle and preparation method thereof for improving sealing effect |
| WO2018228383A1 (en) * | 2017-06-16 | 2018-12-20 | 诺芮医疗器械（上海）有限公司 | Left atrial appendage occlusion and ablation apparatus |
| WO2020216207A1 (en) * | 2019-04-22 | 2020-10-29 | 上海佐心医疗科技有限公司 | Occluder support and preparation method therefor |
| CN113164173A (en) * | 2018-12-10 | 2021-07-23 | 波士顿科学医学有限公司 | Left atrial appendage implant with sealed pocket |
| WO2023155736A1 (en) * | 2022-02-21 | 2023-08-24 | 上海佐心医疗科技有限公司 | Left atrial appendage occluder |
| CN116763384A (en) * | 2023-05-23 | 2023-09-19 | 上海玮启医疗器械有限公司 | Left auricle occluder with anticoagulation coating and preparation method thereof |
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| CN108938034A (en) * | 2017-05-23 | 2018-12-07 | 杭州诺茂医疗科技有限公司 | A kind of occluder for left auricle and preparation method thereof for improving sealing effect |
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| CN116763384A (en) * | 2023-05-23 | 2023-09-19 | 上海玮启医疗器械有限公司 | Left auricle occluder with anticoagulation coating and preparation method thereof |
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