CN109419570A - Overlay film frame and preparation method thereof - Google Patents
Overlay film frame and preparation method thereof Download PDFInfo
- Publication number
- CN109419570A CN109419570A CN201710764183.8A CN201710764183A CN109419570A CN 109419570 A CN109419570 A CN 109419570A CN 201710764183 A CN201710764183 A CN 201710764183A CN 109419570 A CN109419570 A CN 109419570A
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- China
- Prior art keywords
- rack body
- overlay film
- diaphragm
- connector
- film frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000011248 coating agent Substances 0.000 claims description 68
- 238000000576 coating method Methods 0.000 claims description 68
- 239000000463 material Substances 0.000 claims description 29
- 238000010438 heat treatment Methods 0.000 claims description 9
- 239000012528 membrane Substances 0.000 description 12
- 238000010586 diagram Methods 0.000 description 11
- 239000012943 hotmelt Substances 0.000 description 9
- 239000004831 Hot glue Substances 0.000 description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 description 5
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- -1 polyethylene terephthalate Polymers 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000007731 hot pressing Methods 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 229910004337 Ti-Ni Inorganic materials 0.000 description 1
- 229910011209 Ti—Ni Inorganic materials 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 238000009954 braiding Methods 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 239000006255 coating slurry Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000004299 exfoliation Methods 0.000 description 1
- XUCNUKMRBVNAPB-UHFFFAOYSA-N fluoroethene Chemical compound FC=C XUCNUKMRBVNAPB-UHFFFAOYSA-N 0.000 description 1
- KHYBPSFKEHXSLX-UHFFFAOYSA-N iminotitanium Chemical compound [Ti]=N KHYBPSFKEHXSLX-UHFFFAOYSA-N 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000010147 laser engraving Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
- A61F2/06—Blood vessels
- A61F2/07—Stent-grafts
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
- A61F2/90—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
- A61F2/06—Blood vessels
- A61F2/07—Stent-grafts
- A61F2002/072—Encapsulated stents, e.g. wire or whole stent embedded in lining
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2220/005—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements using adhesives
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2240/00—Manufacturing or designing of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2240/001—Designing or manufacturing processes
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Public Health (AREA)
- Transplantation (AREA)
- Cardiology (AREA)
- Veterinary Medicine (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Gastroenterology & Hepatology (AREA)
- Pulmonology (AREA)
- Prostheses (AREA)
- Media Introduction/Drainage Providing Device (AREA)
- Diaphragms And Bellows (AREA)
Abstract
The present invention relates to a kind of overlay film frames and preparation method thereof.A kind of overlay film frame, including rack body and overlay film, the rack body has first surface and the second surface opposite with the first surface, the overlay film includes primary diaphragm and secondary diaphragm, the primary diaphragm is set to the first surface, the secondary diaphragm is set to the second surface and bonds with the primary diaphragm, the overlay film further includes the connector affixed with the rack body, between the primary diaphragm and the secondary diaphragm, the connector and at least one of the primary diaphragm and the secondary diaphragm bond the connector.Above-mentioned overlay film frame can improve the bonding strength between overlay film and rack body.
Description
Technical field
The present invention relates to medical instruments fields more particularly to overlay film frame and preparation method thereof.
Background technique
Existing intracavity implant bracket according to structural form type is divided into the bare bracket being made of metallic support and by overlay film
The overlay film frame that material and metallic support are constituted, the covering material that wherein overlay film frame uses antiseep wrap bracket
It wraps up in, when it is after lesion locations discharge, covering material plays the role of completely cutting off blood flow.
Overlay film frame generally using by single-layer or multi-layer covering material by the way that metallic support is covered by the way of being heat-treated, suturing
Lid package.A kind of existing overlay film frame is general using seam using the overlay film of polyethylene terephthalate (PET) material
The mode of conjunction is fixed on the one or both sides of metallic support.It please refers to Fig.1 to Fig.3, when use expanded PTFE (ePTFE)
When the overlay film 240 of material, 240 elongation percentage height of overlay film is easily-deformable, is not appropriate for the technique connection metallic support 210 using suture,
It needs to melt using ePTFE in high temperature (such as 327 DEG C) at this time, the characteristic that will mutually bond between cooling rear film will
The inner membrance 241 of ePTFE material and the outer membrane 243 of ePTFE material wrap up metallic support 210 completely or partially, through Overheating Treatment,
The part of interior outer membrane contact can be bonded into one, so that metallic support 210 is fixed between inner membrance 241 and outer membrane 243.
Fig. 4 to fig. 6 is please referred to, without sticky between ePTFE material itself and metallic support 210, and inner membrance 241 and outer membrane
243 still have certain gap 260 when converging with the wire of metallic support 210 exists, and causes overlay film frame by external force
Under the action of, metallic support 210 is easy to loosen between inner membrance 241 and outer membrane 243, and viscous to inner membrance 241 and outer membrane 243
The contact surface of conjunction generates the power of tearing, and inner membrance 241 and outer membrane 243 can be gradually disengaged under the action of this power, because in room temperature
Lower ePTFE loses viscosity, thus it is this separation be it is irreversible, may cause 243 partial exfoliation of inner membrance 241 and outer membrane, even
There is metallic support to be detached from the risk of failure from overlay film 240.
Summary of the invention
Based on this, it is necessary to which providing a kind of can improve the overlay film frame of bonding strength and its preparation side between overlay film and bracket
Method.
A kind of overlay film frame, including rack body and overlay film, the bracket have first surface and with the first surface
Opposite second surface, the overlay film include primary diaphragm and secondary diaphragm, and the primary diaphragm is set to the first surface, institute
Secondary diaphragm is stated set on the second surface and is bonded with the primary diaphragm, the overlay film further includes solid with the rack body
The connector connect, the connector is between the primary diaphragm and the secondary diaphragm, the connector and described first
The bonding of at least one of diaphragm and the secondary diaphragm.
Above-mentioned overlay film frame, for overlay film frame under the action of by external force, rack body passes through connector and primary diaphragm
And one in secondary diaphragm is fixed together, to be not easy to loosen between primary diaphragm and secondary diaphragm, to increase
The bonding strength for having added overlay film and rack body reduces overlay film frame displacement of rack body in stress or deformation and causes to cover
The risk of membrane support failure.
The connector is the coating for wrapping up the rack body in one of the embodiments,.
The thickness of the sum of thickness of the primary diaphragm and the secondary diaphragm and the coating in one of the embodiments,
Degree is than being 4:1~20:1.
The rack body includes wave circle in one of the embodiments, and the wave circle includes wave crest, trough and side lever,
The side lever connects the wave crest and trough, and the thickness of the coating on the wave crest and the trough surface is less than the side lever surface
Coating thickness.
At least one of the first surface and the second surface are recessed inwardly to be formed in one of the embodiments,
Groove, the connector are contained in and are fixed on the groove.
The material of the connector and the primary diaphragm and/or the secondary diaphragm in one of the embodiments,
Material is identical.
The preparation method of above-mentioned overlay film frame, comprising the following steps:
The connector for wrapping up the rack body is formed on the rack body；And
The primary diaphragm is set to the first surface of the rack body, the secondary diaphragm is set to the bracket sheet
The second surface of body, to the primary diaphragm and the secondary diaphragm carry out heat treatment make the primary diaphragm, secondary diaphragm and
The connector is adhesively fixed.
The connector of the rack body is wrapped up in the formation on the rack body in one of the embodiments,
Step specifically: the connector is wound in the coating that the rack body forms the package rack body.
The connector of the rack body is wrapped up in the formation on the rack body in one of the embodiments,
Step specifically: form coating on the rack body surface and obtain the connector.
Another preparation method of above-mentioned overlay film frame, comprising the following steps:
At least one of the rack body, the first surface and the second surface of the rack body are provided
It is recessed inwardly to form groove；
The primary diaphragm is set to the first surface of the rack body, the secondary diaphragm is set to the bracket sheet
The second surface of body, carrying out heat treatment to the primary diaphragm and the secondary diaphragm keeps the primary diaphragm and secondary diaphragm viscous
It closes and fixes, fill the groove after the heat treatment of at least one of the primary diaphragm and the secondary diaphragm and accommodated and consolidated
Due to the connector of the groove.
Detailed description of the invention
Fig. 1 is a kind of existing structural schematic diagram of overlay film frame；
Fig. 2 is the partial structural diagram of overlay film frame shown in Fig. 1；
Fig. 3 is the fragmentary cross-sectional view of the overlay film frame of Fig. 2；
Fig. 4 is the partial enlarged view of Fig. 3；
Fig. 5 is that the overlay film frame of Fig. 3 is in a kind of structural schematic diagram of use state；
The overlay film frame that Fig. 6 is Fig. 3 is in the structural schematic diagram of another use state；
Fig. 7 is the partial cutaway view of the overlay film frame of an embodiment；
Fig. 8 is the structural schematic diagram of the wave circle of the overlay film frame of Fig. 7；
Fig. 9 is the magnified partial view of the wave circle of Fig. 8；
Figure 10 is the magnified partial view of the side lever of the wave circle of Fig. 8；
Figure 11 is the sectional view of the side lever of Figure 10；
Figure 12 is the partial enlarged view of the overlay film frame of Fig. 7；
Figure 13 is the partial cutaway view of the overlay film frame of another embodiment；
Figure 14 is the structural schematic diagram of the rack body of the overlay film frame of Figure 13；
Figure 15 is the structural schematic diagram of the overlay film frame of another embodiment
Figure 16 is the structural schematic diagram of the wave circle of the overlay film frame of Figure 15；
Figure 17 is the sectional view of the wave circle of Figure 16；
Figure 18 is the wave circle of the overlay film frame of Figure 15 and the structural schematic diagram of connector.
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing
Give preferred embodiment of the invention.But the invention can be realized in many different forms, however it is not limited to herein
Described embodiment.On the contrary, purpose of providing these embodiments is keeps the understanding to the disclosure more saturating
It is thorough comprehensive.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side ", "upper", "lower", " remote ", " close " and similar statement are for illustrative purposes only.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more phases
Any and all combinations of the listed item of pass.
Fig. 7 and Fig. 8 is please referred to, the overlay film frame 300 of an embodiment includes rack body 310 and overlay film 340.
Rack body 310 includes wave circle 312.Wave circle 312 is that alloy wire weaves wave circle or cutting metal wave circle.In diagram
In embodiment, wave circle 312 is formed by the braiding of Ti-Ni alloy silk.The cross section of wave circle 312 is circle.
Rack body 310 is substantially cylindrical in one of the embodiments, and multiple wave circles 312 are along rack body 310
The setting of axial direction interval.Certainly, in other embodiments, the structure of rack body 310 is not limited thereto.For example, branch
Frame ontology 310 further includes and connects the connecting rod (not shown) between two neighboring wave circle 312, between two adjacent wave circles 312
It is connected by least one connecting rod.Spacing between wave circle 312 is equal, and certainly, the spacing between wave circle 312 can not also phase
Deng.
In the illustrated embodiment, wave circle 312 is Z-type wave circle.Wave circle 312 includes wave crest 3121, trough 3123 and side
Bar 3125.Side lever 3125 connects adjacent wave crest 3123 and trough 3125.
Rack body 310 has first surface and the second surface opposite with first surface.In the illustrated embodiment,
First surface refers to the outer surface of rack body 310, and second surface refers to the inner surface of rack body 310.
Overlay film 340 includes primary diaphragm 341, secondary diaphragm 343 and connector 345.The material of overlay film 340 is expansion poly- four
Vinyl fluoride.Preferably, the material of primary diaphragm 341, secondary diaphragm 343 and connector 345 is same material so that it is convenient to realize
The hot melt adhesive of overlay film 340.Certainly, in other embodiments, the material of primary diaphragm 341, secondary diaphragm 343 and connector 345
Material can mutually merge bonding and fusing point is close.It is understood that connector 345 can also be for coated in rack body
The coating that adhesive on 310 is formed, to increase the bond strength of rack body 310 Yu overlay film 340.For example, connector 345
Material is perfluoroethylene-propylene (FEP).
Primary diaphragm 341 is set to the first surface of rack body 310, and secondary diaphragm 343 is set to the second of rack body 310
Surface, so that rack body 310 and connector 345 are held between primary diaphragm 341 and secondary diaphragm 343.In diagram
In embodiment, the thickness of primary diaphragm 341 and secondary diaphragm 343 is identical.
Please refer to Fig. 9, connector 345 is the coating for wrapping up wave circle 312.In the illustrated embodiment, connector
345 wires for being set around wave circle 312 form coating.Connector 345 be helically wound around wave circle 312 wire formed coating from
And it is fixed to wave circle 312.In the illustrated embodiment, concordant, no overlap and gapless between the striped 3451 of spiral winding,
To guarantee the coating to be formed smoothly without protrusion.Thus can be by connector 345 and primary diaphragm 341 and second by hot melt
Diaphragm 343 is bonded together, and the hot melt of connector 345 forms the coating of package wave circle 312.It should be noted that connector 345
Quantity does not limit, and can wind wave circle 312 by a connector 345 and form coating, multiple connectors 345 also can be used
It winds wave circle 312 and forms coating.It is understood that in other embodiments, wire can also be inserted into e-PTFE
Wave circle is woven in vinyl hose again.
The thickness that connector 345 winds the coating that wave circle 312 is formed will affect rack body 310 and primary diaphragm 341 and
The bond strength of secondary diaphragm 343, membrane wrapping thickness is bigger, and the bond strength of coating and primary diaphragm 341 and secondary diaphragm 343 is got over
It is good.Preferably, the thickness ratio of the sum of thickness of primary diaphragm 341 and secondary diaphragm 343 and coating is 4:1~20:1.
It should be strongly noted that thicker coating will will affect the compression strength of rack body 310.It is preferred, therefore, that
The thickness of the coating on 3123 surface of wave crest 3121 and trough be less than 3125 surface of side lever coating thickness, thus guarantee coating with
While the bond strength of primary diaphragm 341 and secondary diaphragm 343, coating is reduced to the shadow of the compression strength of rack body 310
It rings.The sum of thickness of primary diaphragm 341 and secondary diaphragm 343 and the thickness ratio of the coating on 3123 surface of wave crest 3121 and trough are big
In 8:1, the thickness ratio of the coating on 3125 surface of the sum of thickness of primary diaphragm 341 and secondary diaphragm 343 side lever is 2:1~6:1.
In one of the embodiments, the ratio of the thickness of the thickness and coating at side lever of the coating at wave crest and trough be 1:1.5~
1:3.It is understood that in one embodiment, only coating can also be provided at the side lever of wave circle, in the wave crest of wave circle
With at trough without coating.It will also be appreciated that can be according to the particular/special requirement of the performance to overlay film frame 300, in wave circle 312
Wire surface axial setting different-thickness coating.It will also be appreciated that can also be in the wire week of wave circle 312
Different membrane wrapping thicknesses is set to direction.For example, the thickness of the coating of two lateral positions of the wire of wave circle 312 is greater than first
Thickness at surface and second surface.It should be noted that two sides refer to the face vertical with first surface and second surface.
Preferably, the first surface of the thickness of the coating of two lateral positions of the wire of wave circle 312 and wire and second surface it
Between distance ratio be 2:1~4:1, to further increase the bonding strength of wire and overlay film.
Please refer to Figure 10 and Figure 11, in the illustrated embodiment, connector 345 is helically wound around wave circle 312
Wire forms coating, and gap is formed between the striped of spiral winding formation, and connector 345 wraps up the coating that wave circle is formed
Wave circle part of the surface is covered, certainly, when gap is smaller, wave can also be completely covered in the coating that connector 345 is formed after heating
The surface of circle 312.Certainly, in the case where meeting certain condition, gap can also be larger, and connector 345 can also be in wire surface
Form discontinuous coating.
Figure 12 is please referred to, by coating technique by primary diaphragm 341, secondary diaphragm 343 and connector 345, hot melt adhesive
Afterwards, the hot melt of connector 345 is coated on 310 surface of rack body and forms coating, and connector 345 has filled up primary diaphragm 341 and the
Gap between two diaphragms 343 keeps rack body 310 sufficiently fixed in overlay film 340, the company of rack body 310 and overlay film 340
It connects intensity to greatly improve, ensure that the stability and safety of overlay film frame 300.
Above-mentioned overlay film frame 300, under the action of by external force, rack body 310 passes through connector 345 and primary diaphragm
341 and secondary diaphragm 343 be adhesively fixed, to be not easy to loosen between primary diaphragm 341 and secondary diaphragm 343, reduce
The risk that overlay film frame 300 displacement of rack body 310 in stress or deformation causes overlay film frame 300 to fail.
Figure 13 and Figure 14 is please referred to, the structure of the overlay film frame 400 of another embodiment and the structure of overlay film frame 300 are big
Cause identical, difference is: the rack body 410 of overlay film frame 400 is cutting metallic support, and connector 445 is coated in branch
The coating that the coating on 410 surface of frame ontology is formed.
In the illustrated embodiment, overlay film frame 400 is that stainless steel ball expands overlay film frame, the wave circle of rack body 410
The 412 cutting metal wave circle to be prepared by metal laser engraving.The cross section of wave circle 412 is rectangle.Preferably, rectangle
Four angles are fillet.
Connector 445 is the coating formed by way of spraying in one of the embodiments, and coating is attached to wave circle
412 surface forms coating.The material of connector 445 is preferably expanded PTFE.
The sum of thickness of primary diaphragm 441 and secondary diaphragm 445 and the thickness ratio of coating are in one of the embodiments,
4:1~20:1.
The thickness of the coating on 4123 surface of wave crest 4121 and trough is less than 3125 surface of side lever in one of the embodiments,
Coating thickness.Preferably, the sum of thickness of primary diaphragm 341 and secondary diaphragm 443 and 4123 table of wave crest 4121 and trough
The thickness ratio of the coating in face is the packet on the sum of thickness of primary diaphragm 441 and secondary diaphragm 443 4125 surface of side lever greater than 8:1
The thickness ratio of film is 2:1~6:1.
Above-mentioned overlay film frame 400 first obtains connector 445 in the surface prepares coating of rack body 410, passes through overlay film work
Skill is by primary diaphragm 441, secondary diaphragm 443 and connector 445, and after hot melt adhesive, the hot melt of connector 445 is coated on rack body
410 surfaces form coating, and connector 445 has filled up the gap between primary diaphragm 441 and secondary diaphragm 443, made rack body
410 is sufficiently fixed in overlay film 440, and rack body 410 and the bonding strength of overlay film 440 greatly improve, and ensure that overlay film frame
400 stability and safety.
Above-mentioned overlay film frame 400, under the action of by external force, rack body 410 passes through connector 445 and primary diaphragm
441 and secondary diaphragm 443 be adhesively fixed, to be not easy to loosen between primary diaphragm 441 and secondary diaphragm 443, reduce
The risk that overlay film frame 400 displacement of rack body 410 in stress or deformation causes overlay film frame 400 to fail.
Figure 15 and Figure 16 is please referred to, the structure of the overlay film frame 500 of another embodiment and the structure of overlay film frame 400 are big
Cause identical, difference is: the surface of the wave circle 512 of overlay film frame 500 forms fluted 5121.
In the illustrated embodiment, the first surface of groove 5121 from wave circle 512, which is recessed inwardly, to form, certainly at other
In embodiment, groove 5121 can also be recessed inwardly from the second surface of wave circle 512 to be formed or the first table of wave circle 512
Face and second surface are each formed with groove.
In the illustrated embodiment, groove 5121 is blind slot, and certainly in other embodiments, groove 5121 can be with
For through slot, groove 5121 runs through first surface and second surface.
Please refer to Figure 15, Figure 17 and Figure 18, when spraying the coating to form package wave circle 512 on the surface of wave circle 512
When as connector 545, the material of coating fills groove 5121, viscous between connector 545 and wave circle 512 so as to increase
With joint efforts, the part for being housed in groove 5121 becomes the anchor point that connector 545 is connect with wave circle 512, when connector 545 and first
When diaphragm 541 and secondary diaphragm 543 pass through hot melt adhesive, the connection of rack body and primary diaphragm 541 and secondary diaphragm 543 is more
It is firm.
It is appreciated that connector 545 is not limited to the coating of the cladding wave circle 512 formed by spraying, in other implementations
In mode, connector 545 can also be the coating for being helically wound around wave circle 512, at this point, after carrying out hot-pressing processing to overlay film, even
Fitting 545, primary diaphragm 541 and the hot melt filling groove 5121 of secondary diaphragm 543.It is, of course, also possible to understand, it is coated in wave
The coating of circle 512 also can be omitted, and after carrying out hot-pressing processing to overlay film, fill after primary diaphragm 541 and the hot melt of secondary diaphragm 543
Groove 5121, which is formed, is contained in the protrusion of groove as connector, and connector accommodates and be fixed on groove at this time, become overlay film and
The anchor point that wave circle 512 connects.When subjected to an external force, rack body 510 passes through connector 545 and primary diaphragm 541
And secondary diaphragm 543 is adhesively fixed, to be not easy to loosen between primary diaphragm 541 and secondary diaphragm 543, reduces and covers
The risk that the displacement of rack body 510 in stress or deformation of membrane support 500 causes overlay film frame 500 to fail.
The preparation method of above-mentioned overlay film frame, comprising the following steps:
Step S710, rack body is provided.
Rack body has first surface and the second surface opposite with first surface.Rack body includes wave circle.
At least one of the first surface of rack body and the second surface concave in one of the embodiments,
It falls into and forms groove.
Step S720, the connector of coated stent ontology is formed on rack body.
Connector is wound in the coating that rack body forms coated stent ontology in one of the embodiments,.It is preferred that
, connector is helically wound around wave circle.It is further preferred that being put down between the striped that the connector for being helically wound around wave circle is formed
Together, no overlap and gapless are to guarantee the coating to be formed smoothly without protrusion.Certainly, in other embodiments, spiral winding
Gap is formed between the striped that the connector of wave circle is formed.
Further, the thickness of wave crest and the connector on trough surface is less than the thickness of the connector on side lever surface.It can be with
Understand, in one embodiment, can also only be intertwined and connected at the side lever of wave circle part, at the wave crest and trough of wave circle
It does not wind.
Coating, which is formed, on rack body surface in one of the embodiments, obtains connector.Preferably, by spraying,
Spin coating or blade coating slurry form coating and obtain connector.The thickness of wave crest and the coating on trough surface in one of the embodiments,
Degree is less than the thickness of the coating on side lever surface.It is understood that in one embodiment, it can also be only at the side lever of wave circle
Applying coating, it is uncoated at the wave crest and trough of wave circle.It will also be appreciated that can also be set in the circumferential direction of wave circle
Set different coating layer thicknesses.For example, at the thickness of two lateral positions of the wire of wave circle and first surface and second surface
The thickness of coating is big.Preferably, in the coating of two lateral positions of wave circle wire with a thickness of wire first surface and
The ratio on the distance between two surfaces is 2:1~4:1.
Connector is the hose for being sheathed on the wave circle of bracket in one of the embodiments,.
The material of connector is expanded PTFE in one of the embodiments,.In other embodiments, it connects
The material of part can also be adhesive, such as perfluoroethylene-propylene (FEP).
Step S730, primary diaphragm is set to the first surface of rack body, secondary diaphragm is set to the of rack body
Two surfaces, carrying out heat treatment to primary diaphragm and secondary diaphragm makes primary diaphragm be adhesively fixed with secondary diaphragm.
The material of primary diaphragm and secondary diaphragm is expanded PTFE, primary diaphragm, secondary diaphragm and connector
Material is identical.Certainly, in other embodiments, the material phase of at least one of primary diaphragm and secondary diaphragm and connector
With.It is appreciated that when the material of connector is adhesive, the material of connector can be with primary diaphragm and secondary diaphragm
Material is different.
In the step, carrying out heat treatment to primary diaphragm and secondary diaphragm makes primary diaphragm and secondary diaphragm hot melt adhesive,
Primary diaphragm, secondary diaphragm and connector hot melt adhesive simultaneously.In the case where rack body surface forms fluted, it is wound in
The connector hot melt filling groove of rack body.
The preparation method of above-mentioned overlay film frame is easy to operate, and the overlay film frame being prepared can improve between overlay film and bracket
Bonding strength.
It is appreciated that the groove on rack body surface can be omitted, directly forming coating in rack body can equally be mentioned
Bonding strength between high overlay film and bracket.Step S720 can be omitted, directly the first table in the reeded rack body in surface
Primary diaphragm is arranged in face, and secondary diaphragm is set to the second surface of rack body, carries out hot place to primary diaphragm and secondary diaphragm
Reason makes primary diaphragm and secondary diaphragm be adhesively fixed, and is covered in the primary diaphragm and secondary diaphragm of groove surfaces at this time
Filling groove is accommodated and is fixed on the connector of groove after at least one hot melt.It certainly, can in order to preferably fill groove
The corresponding protrusion of groove is set to the surface at least one of primary diaphragm and secondary diaphragm, after hot melt, protrusion receiving
And it is fixed on groove and forms connector.It should be noted that groove can be through slot, the first surface of penetrating wave circle and the second table
Filling groove obtains connection affixed with primary diaphragm and secondary diaphragm simultaneously after face, primary diaphragm and secondary diaphragm are heated
Part.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of overlay film frame, including rack body and overlay film, the rack body have first surface and with first table
The opposite second surface in face, the overlay film include primary diaphragm and secondary diaphragm, and the primary diaphragm is set to the first surface,
The secondary diaphragm be set to the second surface and with the primary diaphragm bond, which is characterized in that the overlay film further include with
The affixed connector of the rack body, the connector is between the primary diaphragm and the secondary diaphragm, the company
Fitting and at least one of the primary diaphragm and the secondary diaphragm bond.
2. overlay film frame according to claim 1, which is characterized in that the connector is the packet for wrapping up the rack body
Film.
3. overlay film frame according to claim 2, which is characterized in that the thickness of the primary diaphragm and the secondary diaphragm
The sum of with the thickness ratio of the coating be 4:1~20:1.
4. overlay film frame according to claim 2, which is characterized in that the rack body includes wave circle, the wave circle packet
Include wave crest, trough and side lever, the side lever connects the wave crest and trough, the thickness of the coating on the wave crest and the trough surface
Degree is less than the thickness of the coating on the side lever surface.
5. overlay film frame according to claim 1, which is characterized in that in the first surface and the second surface extremely
Few one is recessed inwardly to form groove, and the connector is contained in and is fixed on the groove.
6. overlay film frame according to claim 1, which is characterized in that the material of the connector and the primary diaphragm
And/or the material of the secondary diaphragm is identical.
7. the preparation method of overlay film frame described in claim 1, which comprises the following steps:
The connector for wrapping up the rack body is formed on the rack body；And
The primary diaphragm is set to the first surface of the rack body, the secondary diaphragm is set to the rack body
Second surface, carrying out heat treatment to the primary diaphragm and the secondary diaphragm makes the primary diaphragm, secondary diaphragm and described
Connector is adhesively fixed.
8. the preparation method of overlay film frame according to claim 8, which is characterized in that the shape on the rack body
The step of at the connector for wrapping up the rack body specifically: the connector is wound in the rack body and forms package
The coating of the rack body.
9. the preparation method of overlay film frame according to claim 8, which is characterized in that the shape on the rack body
The step of at the connector for wrapping up the rack body specifically: form coating on the rack body surface and obtain the connection
Part.
10. the preparation method of overlay film frame described in claim 1, which comprises the following steps:
The rack body is provided, at least one of described first surface and the second surface of the rack body are inside
Recess forms groove；
The primary diaphragm is set to the first surface of the rack body, the secondary diaphragm is set to the rack body
Second surface, carrying out heat treatment to the primary diaphragm and the secondary diaphragm bonds the primary diaphragm and secondary diaphragm admittedly
It is fixed, the groove, which is filled, after the heat treatment of at least one of the primary diaphragm and the secondary diaphragm is accommodated and be fixed on
The connector of the groove.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710764183.8A CN109419570B (en) | 2017-08-30 | 2017-08-30 | Tectorial membrane bracket and preparation method thereof |
| PCT/CN2018/102827 WO2019042302A1 (en) | 2017-08-30 | 2018-08-29 | Covered stent and preparation method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710764183.8A CN109419570B (en) | 2017-08-30 | 2017-08-30 | Tectorial membrane bracket and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN109419570A true CN109419570A (en) | 2019-03-05 |
| CN109419570B CN109419570B (en) | 2024-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710764183.8A Active CN109419570B (en) | 2017-08-30 | 2017-08-30 | Tectorial membrane bracket and preparation method thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109419570B (en) |
| WO (1) | WO2019042302A1 (en) |
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| CN114732569A (en) * | 2022-03-09 | 2022-07-12 | 江苏朴芃医疗科技有限公司 | Manufacturing method of covered stent, covered stent and covered stent conveying system |
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Also Published As
| Publication number | Publication date |
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| CN109419570B (en) | 2024-05-24 |
| WO2019042302A1 (en) | 2019-03-07 |
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