CN108261254A - Branch type overlay film frame - Google Patents
Branch type overlay film frame Download PDFInfo
- Publication number
- CN108261254A CN108261254A CN201611267438.1A CN201611267438A CN108261254A CN 108261254 A CN108261254 A CN 108261254A CN 201611267438 A CN201611267438 A CN 201611267438A CN 108261254 A CN108261254 A CN 108261254A
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- China
- Prior art keywords
- overlay film
- wavy annular
- expansion loop
- annular object
- film frame
- Prior art date
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- 230000002093 peripheral effect Effects 0.000 claims abstract description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 230000001154 acute effect Effects 0.000 claims description 3
- 230000017531 blood circulation Effects 0.000 abstract description 19
- 238000010586 diagram Methods 0.000 description 7
- 239000002184 metal Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 210000004204 blood vessel Anatomy 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 4
- 206010002329 Aneurysm Diseases 0.000 description 3
- -1 Polyethylene Terephthalate Polymers 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 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 description 3
- 229910001000 nickel titanium Inorganic materials 0.000 description 3
- 229920000139 polyethylene terephthalate Polymers 0.000 description 3
- 239000005020 polyethylene terephthalate Substances 0.000 description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 210000001367 artery Anatomy 0.000 description 2
- 239000000560 biocompatible material Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 230000002792 vascular Effects 0.000 description 2
- 210000003462 vein Anatomy 0.000 description 2
- 208000002251 Dissecting Aneurysm Diseases 0.000 description 1
- 208000007536 Thrombosis Diseases 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 208000007474 aortic aneurysm Diseases 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 238000009954 braiding Methods 0.000 description 1
- 230000004087 circulation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- XUCNUKMRBVNAPB-UHFFFAOYSA-N fluoroethene Chemical compound FC=C XUCNUKMRBVNAPB-UHFFFAOYSA-N 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 238000002324 minimally invasive surgery Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
- 208000019553 vascular disease Diseases 0.000 description 1
- 230000000007 visual effect Effects 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
Abstract
A kind of branch type overlay film frame, the side branch connected including tubular body and with tubular body, tubular body includes the first bare bracket and the first overlay film set on the first bare bracket, first bare bracket includes at least one non-end wavy annular object, side branch includes the second overlay film, second overlay film is connect with the first overlay film, the interface of first overlay film and the second overlay film is provided with the expansion loop along interface peripheral distribution, and expansion loop is at least partially disposed at tubular body and is provided on the periphery of non-end wavy annular object.Above-mentioned branch type overlay film frame, by setting expansion loop in interface, and expansion loop is at least partially disposed at tubular body and is provided on the periphery of non-end wavy annular object, after stent release, expansion loop can with the self-expanding of the first bare bracket radial expansion, to keep the radial width of interface, so as to ensure that blood flow successfully flows into side branch out of tubular body by interface, blood flow is unobstructed, sufficient in Shi Ce branches, and is easy to seal wire entrance.
Description
Technical field
The present invention relates to the field of medical instrument technology, more particularly to a kind of branch type overlay film frame.
Background technology
Aneurysm is clinically common vascular diseases, is mostly occurred with the elderly, and this disease is easy to cause actively
Arteries and veins knurl ruptures, and the life of patient is caused greatly to threaten, and general surgical operation was once considered as to treat aortic aneurysm only
One mode, but this method surgical risk is very big.
With the continuous development of present medical technology, overlay film frame is implanted into human body using Minimally Invasive Surgery, treatment is actively
The treatment operation of arteries and veins knurl and dissecting aneurysm is more and more utilized.This therapy is by artificial overlay film frame pressure
Conveying device is retracted, human body is led into along the seal wire being implanted into advance, overlay film frame is discharged into lesion locations, completely cuts off knurl chamber
New channel of blood flow is formed, aneurysm is after supply of blood flow is lost, the knurl gradual thrombus of intracavitary remaining blood and flesh chemical conversion blood vessel group
It knits, the knurl wall of expansion state is shunk when by negative pressure, is gradually restored to close to reset condition, so as to reach the aneurysmal mesh for the treatment of
's.
However, the blood vessel structure of human body is complicated, and side branch is more, while patient individual difference is larger, the length of knurl
May be very long, the position difference of knurl may also be larger, and clinically knurl is located at the feelings at side branch vessel or near the branch of side
Condition is also relatively common, and aneurysm is treated according to overlay film frame, and side branch vessel is fallen in often occlusion.The straight pipe type of standardization covers
Membrane support is difficult to meet the requirements, and is generally required for special vascular site customization side branch vessel.
There is branch type overlay film frame at present, can side branch and main body be formulated according to the aneurysmal position of patient and form
Different size, clinical practice is relatively broad.But this can bring the problem of new, for example, the side branch of stent and main body junction
Overlay film connector because overlay film is generally flexible material, no support force, therefore itself cannot keep the form of interface, cause
Flat slot is presented in interface position, is unfavorable for blood flow and passes through interface.Usually, it the metallic support between main body and side branch and covers
There are mainly two types of the structures of film, is secondly exactly main body and side branch point first, by the metal wave circle across main body and side branch
Metal wave circle that Cai Yong be not independent.Both modes, the former main body and side branch metallic support, which are connected, can ensure side point
The interface form of branch, but the metal standoff structure of integral type limits the compliance between side branch and main body, the latter's main body
With the metal standoff structure of side branch stent independently, although there is preferable compliance between side branch and main body, side point
Support interface position does not have the support of metallic support, and interface form is bad, influences subsequent procedures seal wire and is entered by main body rack
Side branch stent establishes the process of track, and is also unfavorable for passing through for blood flow.
Invention content
Based on this, in view of the above-mentioned problems, it is necessary to provide a kind of branch type overlay film frame, to improve at the stub interface of side
Outline shape, Shi Ce branches blood flow are unobstructed.
A kind of branch type overlay film frame, the side branch connected including tubular body and with the tubular body, the tubulose
Main body includes the first bare bracket and the first overlay film set on first bare bracket, and first bare bracket includes at least one non-
End wavy annular object, the side branch include the second overlay film, and second overlay film is connect with first overlay film, and described first
The interface of overlay film and second overlay film is provided with the expansion loop along the interface peripheral distribution, and the expansion loop at least portion
Divide and be provided on the periphery of the non-end wavy annular object positioned at the tubular body.
First bare bracket further includes proximal end wavy annular object and distal end wavy annular in one of the embodiments,
Object, at least one non-end wavy annular object be set to the proximal end wavy annular object and the distal end wavy annular object it
Between, the non-end wavy annular object is split ring, and the expansion loop is at least partially disposed at the non-end wavy annular object
Opening.
The expansion loop is connected with the free end of the non-end wavy annular object in one of the embodiments,.
The number at least two of the non-end wavy annular object in one of the embodiments, the expansion loop with
All free ends of at least two non-end wavy annular objects are connected.
The expansion loop includes wire around the interface peripheral ring around the bulge of formation in one of the embodiments,
And the movable part being connect with the bulge, the bulge are at least partially disposed at the periphery of the non-end wavy annular object
On.
The expansion loop has close to the peak of the proximal end wavy annular object and close in one of the embodiments,
The minimum point of the distal end wavy annular object, the moving part is in the minimum point and the side of the line of the peak.
The minimum point of line between the movable part two-end-point and the expansion loop in one of the embodiments,
Line between the peak is parallel.
The movable part is the notch being set on the expansion loop in one of the embodiments,.
The notch is two in one of the embodiments, and the expansion loop is cut into two by two notches
The bulge arranged along the longitudinal center axis direction of the tubular body, the both ends of each bulge are respectively with one
A non-two corresponding free end of end wavy annular object connection.
The bulge is open loop structure in one of the embodiments, and two opposite ends of the bulge are each other
First close to each other extend to form overlapping region with being located remotely from each other again, the stacked region forms the movable part.
The end of the movable part is in round and smooth shape in one of the embodiments,.
The movable part is the waveform segment being set on the expansion loop in one of the embodiments, the waveform segment
Including several waveforms.
The number of the waveform segment is two in one of the embodiments, and two waveform segments are symmetrical arranged.
The waveform is at least one of M shapes wave, Z-shaped wave or sine wave in one of the embodiments,.
The longitudinal center axis of the tubular body and the vertical central axis of the side branch in one of the embodiments,
Angle between line is acute angle, and the expansion loop is oval.
Above-mentioned branch type overlay film frame, by setting expansion loop, and the expansion loop is at least partially disposed at institute in interface
It states tubular body to be provided on the periphery of the non-end wavy annular object, expansion loop provides support force for interface, and stent is released
After putting, expansion loop can with the self-expanding of the first bare bracket radial expansion, to keep the radial width of interface, so as to protect
Card blood flow successfully flows into side branch out of tubular body by interface, and blood flow is unobstructed, sufficient in Shi Ce branches, and is easy to seal wire
Into.Meanwhile mutually independent bare bracket may be used with side branch in tubular body, can improve between side branch and main body
Compliance improves the adaptability of stent.
Description of the drawings
Fig. 1 is the structure diagram of the branch type overlay film frame of one embodiment of the invention；
Fig. 2 is the structure diagram at another visual angle of branch type overlay film frame shown in FIG. 1；
Fig. 3 is the expansion loop of the branch type overlay film frame of another embodiment of the present invention and the structure of non-end wavy annular object
Schematic diagram；
Fig. 4 is the expansion loop of the branch type overlay film frame of further embodiment of this invention and the structure of non-end wavy annular object
Schematic diagram；
Fig. 5 is the expansion loop of the branch type overlay film frame of yet another embodiment of the invention and the structure of non-end wavy annular object
Schematic diagram；
Fig. 6 is the structure diagram of the expansion loop of the branch type overlay film frame of further embodiment of this invention；
Fig. 7 is the structure diagram of the expansion loop of the branch type overlay film frame of another embodiment of the present invention.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, below in conjunction with the accompanying drawings to the present invention
Specific embodiment be described in detail.Many details are elaborated in the following description in order to fully understand this hair
It is bright.But the invention can be embodied in many other ways as described herein, those skilled in the art can be not
Similar improvement is done in the case of violating intension of the present invention, therefore the present invention is not limited to the specific embodiments disclosed below.
It should be noted that when element is referred to as " being fixed on " or " being set to " another element, it can be directly another
On one element or there may also be elements placed in the middle.When an element is considered as " connection " another element, it can be with
It is directly to another element or may be simultaneously present centering elements.Term as used herein " vertically ", " level
", "left", "right" and similar statement for illustrative purposes only, it is unique embodiment to be not offered as.
Unless otherwise defined, all of technologies and scientific terms used here by the article is with belonging to technical field of the invention
The normally understood meaning of technical staff is identical.Term used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein " and/or " including one or more
The arbitrary and all combination of relevant Listed Items.
In overlay film frame field, after overlay film frame implantable intravascular, definition blood flow flows to this from the proximal end of overlay film frame and covers
The distal end of membrane support.
" overlay film frame " refers to bare bracket surface covered with the structure after film in the application, and bare bracket refers to include multiple
There is no the structure of film between wavy annular object and each wavy annular object.
Referring to Fig. 1, branch type overlay film frame 10 includes tubular body 100 and the side connected with the tubular body 100
Branch 200.The tubular body 100 includes the first bare bracket 101 and the first overlay film 103 set on first bare bracket 101.
First bare bracket 101 includes at least one non-end wavy annular object 102.The side branch 200 includes the second overlay film
201.Second overlay film 201 is connect with first overlay film 103.First overlay film 102 connects with second overlay film 201
Be provided with the expansion loop 120 along 110 peripheral distribution of interface at mouthfuls 110, and the expansion loop 120 be at least partially disposed at it is described
Tubular body 100 is provided on the periphery of the non-end wavy annular object 102.
In the application, the periphery of wavy annular object refers to the line of the multiple wave crests of wavy annular object and multiple troughs
Line encloses region that is getting up and including the wavy annular object.
Specifically, it is formed between the longitudinal center axis of tubular body 100 and the longitudinal center axis of side branch 200 certain
Angle, the junction of side branch 200 and tubular body 100 forms interface 110, that is, the first overlay film 103 and the second overlay film 201
Junction formed interface 110.Specific in the present embodiment, the connection of the first overlay film 103 and the second overlay film 201 can pass through seam
Close, bond or heat the modes such as sintering or the first overlay film 103 and the second overlay film 201 or integral structure.First overlay film
103 and second overlay film 201 membrane structure of biocompatibility can be used, for example, using PET (Polyethylene
Terephthalate, polyethylene terephthalate) or PTFE (Polytetrafluoroethene, polytetrafluoroethylene (PTFE))
As covering material.Wire may be used in bare bracket 101, for example, by metal wire knitted or cutting into required waveform, wire
Nitinol alloy wire can be used, such as the nitinol alloy wire of a diameter of 0.40mm.
Please continue to refer to Fig. 1, the first bare bracket 101, expansion loop 120 are connect with the first overlay film 103 by suture way, seam
The quantity of chalaza 105 and position are determined according to actual needs.
It certainly, in other embodiments, can also be by covering between bare bracket 101,120 and first overlay film 103 of expansion loop
Film is sintered or bonding method is formed.For example, it can integrally cover polytetrafluoroethyl-ne in the inner surface and the outer surface of bare bracket 101
Alkene film, bare bracket 101 and expansion loop 120 are respectively positioned among two layers of overlay film, by way of high-temperature pressurizing, by poly- the four of ectonexine
Vinyl fluoride overlay film bonds together, so as to which bare bracket 101 and expansion loop 120 are fixed between overlay film.
It should be noted that the diameter of side branch 200 can be equal with the diameter of tubular body 100, it can not also be equal,
For example, the diameter of side branch 200 can be less than the diameter of tubular body 100.
In the present embodiment, shape between the longitudinal center axis of tubular body 100 and the longitudinal center axis of side branch 200
Into angle be acute angle, interface 110 is oval.It should be noted that in other embodiments, the longitudinal direction of tubular body 100
Angle between the longitudinal center axis of central axis and side branch 200 is not limited to this, and the shape of interface 110 may be it
He, for example, the longitudinal center axis of side branch 200 can also be vertical with the longitudinal center axis of tubular body 100, interface 110
It is rounded.Certainly, interface 110 can also be other space closed curves.
Usually, stent has compressive state and release conditions, and compressed stent is strapped in the sheath of conveyer, uses
In conveying in the blood vessel, discharged by the self-expanding of each bare bracket on each overlay film after reaching target disease position, usually discharged
The path length of stent afterwards is slightly larger than the path length of blood vessel, so that stent closely pastes vascular wall, forms new channel of blood flow.It can
To understand, due to being supported at tubular body 100 and the interface 110 of side branch 200 without bare bracket, it is easy to cause oval connect
Mouth 110 is deformed into flat slot interface, not only easily causes channel of blood flow and narrows, but also seal wire will be hindered smoothly to enter.Above-mentioned point
Forked type overlay film frame 10, by setting expansion loop 120 at interface 110, and the expansion loop 120 is at least partially disposed at the pipe
Shape main body 100 is provided on the periphery of the non-end wavy annular object 102, and expansion loop 120 provides support for interface 110
Power, stent release after, expansion loop 120 can with the self-expanding of the first bare bracket 101 radial expansion, to keep interface 110
The radial width at place so as to ensure that blood flow successfully flows into side branch 200 out of tubular body 100 by interface 110, makes side point
200 blood flows of branch are unobstructed, sufficient, and are easy to seal wire entrance.Meanwhile tubular body 100 may be used independently of each other with side branch 200
Bare bracket, the compliance between side branch 200 and main body 100 can be improved, improve the adaptability of stent.
Please continue to refer to Fig. 2, first bare bracket 101 further includes proximal end wavy annular object 1021, distal end wavy annular
Object 1023, at least one non-end wavy annular object 102 are set to the proximal end wavy annular object 1021 and the distal end
Between wavy annular object 1023.The non-end wavy annular object 102 is split ring, and the expansion loop 120 is located at the non-end
The opening of portion's wavy annular object 102.
Specifically, proximal end wavy annular object 1021 and distal end wavy annular object 1023 are closed-loop, non-end corrugated gasket
Shape object 102 is similar to proximal end wavy annular object 1021 and distal end 1023 shapes of wavy annular object, and non-end wavy annular object 102
Arc-shaped circumferential surface and proximal end wavy annular object 1021, distal end wavy annular object 1023 circumferential surface it is coplanar.Proximal end wavy annular object
1021st, distal end wavy annular object 1023 and non-end wavy annular object 102 can have the same or similar waveform shape, example
Such as, waveform shape can be Z-shaped wave, M shapes wave or sine wave etc..
Further, the expansion loop 120 is connected with the free end of the non-end wavy annular object 102.Further,
The number at least two of the non-end wavy annular object 102, the non-end waveform of expansion loop 120 and at least two
All free ends of ring 102 are connected.Specific in the present embodiment, referring to Fig. 2, non-end wavy annular object 102
Number is two, is terminated in wave close to two free ends of the non-end wavy annular object 102 of proximal end wavy annular object 1021
At paddy position, terminate close to two free ends of the non-end wavy annular object 102 of distal end wavy annular object 1023 in wave crest position
Place is put, expansion loop 120 is located at the opening of two non-end wavy annular objects 102, expansion loop 120 and two wavy annular objects
102 four free ends are connected.
It should be noted that non-end wavy annular object 102 may be multiple, expansion loop 120 is located at multiple non-ends
The opening of wavy annular object 102.It is understood that in other embodiment, expansion loop 120 can be with all non-end waves
The free end of shape ring 102 is all connected with, can also selectivity connect with the free end of the non-end wavy annular object 102 in part
It connects, can also be in off-state with the free end of all non-end wavy annular objects 102.
Certainly, in other embodiments, expansion loop 120 can not also connect with the free end of non-end wavy annular object 102
It connects, that is, there is certain interval between the free end of expansion loop 120 and non-end wavy annular object 102.
Specifically, the expansion loop 120 include wire around 110 peripheral ring of interface around the bulge 121 of formation and
The movable part 122 being connect with the bulge 121.The bulge 121 is at least partially disposed at the non-end wavy annular object
On 102 periphery.Bulge 121 is used for after stent release self-expanding to maintain the outline shape of interface 110.Movable part
122 are connected with non-end wavy annular object 102, in this way, treating that non-end wavy annular object 102 is not bound and restores to natural shape
During state, movable part 122 can also promote expansion loop 120 quickly under 102 drive of non-end wavy annular object
Self-expanding is to maintain the outline shape of interface 110, so as to more efficiently ensure that blood flow smoothly passes through out of tubular body 100
Interface 110 flows into side branch 200, and 200 blood flow of Shi Ce branches is unobstructed, sufficient, and is easy to seal wire entrance.
In the present embodiment, bulge 121 is closed hoop structure；The number of movable part 122 is two, two movable parts
122 are located at the both sides of bulge 121 respectively；One movable part 122 and two non-end wavy annular objects of 120 side of expansion loop
102 two free ends are connected, the non-end wavy annular object of two of another movable part 122 and 120 opposite side of expansion loop
102 two free ends are connected.
Certainly, in other embodiments, expansion loop 120 can also omit movable part 122, for example, using other elasticity compared with
Good material rounds to be formed along 110 periphery of interface completely, and e.g., elastic ring, material made of Nitinol have swollen in itself
Close ring made of the high molecular material of swollen ability.
Further, referring to Fig. 2, the expansion loop 120 has the highest close to the proximal end wavy annular object 1021
Point 123 and close to the distal end wavy annular object 1023 minimum point 124, the movable part 122 be located at the minimum point 124 and
The side of the line of the peak 123.
Further, 122 at least one endpoint of movable part is not overlapped with peak 123 and minimum point 124.Example
Such as, one end of the movable part 122 is located at peak 123, and the height of the other end is higher than the height where minimum point 124.Again
Such as, one end of the movable part 122 is located at minimum point 124, and the height of the other end is less than the height where peak 123.Again
Such as, the height of one end of the movable part 122 is less than peak 123 higher than the height where minimum point 124, the height of the other end
The height at place, so that expansion loop 120 has larger screen resilience, the preferably wheel at restoration interface 110 after stent release
Profile state.
It is appreciated that movable part 122 can also be set to the other positions of expansion loop 120.For example, movable part 122 may be used also
To be set near the peak 123 or minimum point 124 of expansion loop 120.In other words, the both ends of movable part 122 are located at most respectively
The both sides of high point 123；Alternatively, the both ends of movable part 122 are located at the both sides of minimum point 124 respectively.
Further, the minimum point 124 of the line between 122 two-end-point of movable part and the expansion loop 120
Line between the peak 123 is parallel.Movable part 122 close to peak 123 endpoint to the minimum point 124 and institute
The distance of the line between peak 123 and movable part 122 are stated close to the endpoint of minimum point 124 to the minimum point 124 and institute
The distance for stating the line between peak 123 is equal, to improve the symmetry of expansion loop 120, preferably ensures at interface 110
Outline shape.
It is understood that in other embodiments, it can be non-with at least one in multiple non-end wavy annular objects
End wavy annular object is closed loop configuration, and expansion loop is located between two adjacent non-end wavy annular objects, such as positioned at
Two be open loop structure adjacent non-end wavy annular object between or positioned at two be the adjacent of closed loop configuration
In the non-end wavy annular object of closed loop configuration and in open loop structure between non-end wavy annular object or positioned at adjacent
Between non-end wavy annular object.It will also be appreciated that in other embodiments, expansion loop can also only with a non-end
Wavy annular object is connected, and is spaced a distance with other non-end wavy annular objects.
Referring to Fig. 3, movable part 122 is the notch being set on the expansion loop 120 (figure is not marked), that is, expansion loop 120
For non-close structure.Specific in the present embodiment, the notch is one, the both ends of expansion loop 120 respectively with two non-ends
The free end connection of wavy annular object 102, the spacing of the notch are located at expansion loop 120 1 for two wavy annular objects 102
The distance between two free ends of side, that is, the side of expansion loop 120 connects the freedom of two non-end wavy annular objects 102
End, two free ends of two non-end wavy annular objects 102 of opposite side disconnect, and form movable part 122.
Referring to Fig. 4, the notch is two in one of the embodiments, two notches cut expansion loop 120
It is cut into the bulge 121 that two longitudinal center axis directions along tubular body 100 arrange.The two of each bulge 121
Free end corresponding with non-102 liang of the end wavy annular object connects respectively at end.For example, two adjacent non-end waves
There are two opposite semiellipse structures for setting on shape ring 102, form bulge 121, have between two semiellipses certain
Interval, formed movable part 122.Preferably, vertical central axis of the notch both ends of the expansion loop 120 along tubular body 100
The space D of line no more than between the peak 123 of the expansion loop 120 and minimum point 124 along the longitudinal direction of tubular body 100
0.15 times of the length L of mandrel line, that is, D≤0.15L.If this is because D be more than 0.15L, 103 interface 110 of the first overlay film
Region nearby without metal support is larger, in this way, the first overlay film 103 easily forms fold at interface 110, and then influences blood flow
Circulation.
It is understood that bulge 121 can be a part for non-end wavy annular object 102, that is, bulge 121
It is an integral molding structure with non-end wavy annular object 102.In other words, by changing interface on non-end wavy annular object 102
Waveform at 110 so that its profile with interface 110 coincide, can obtain expansion loop 120, not need to add other gold in this way
Belong to ring, interface 110 can be maintained by only changing the waveform configuration that existing non-end wavy annular object 102 is located at interface 110
The outline shape at place so as to ensure that blood flow smoothly flows into side branch 200 out of tubular body 100 by interface 110, makes side point
200 blood flows of branch are unobstructed, sufficient, and are easy to seal wire entrance.
Referring to Fig. 5, in one embodiment, the bulge 121 is open loop structure, and two that bulge 121 is opposite
End is first close to each other each other to extend to form overlapping region (figure is not marked) with being located remotely from each other again, and the overlapping region forms described
Movable part 122, as shown in dashed region in Fig. 5.For example, the wire sizing for having biocompatible materials using one is made
It coincide with 110 shape of interface, and the expansion loop 120 that both ends overlap, two wire ends at overlapping region are free state, this
Sample, two free ends in the case where being squeezed of interface 110 when being packed into conveyer of stent 10 are movable, make at interface 110
Structure there is the decrement of bigger, the resistance that suffered resistance is smaller when being packed into conveyer and when stent 10 discharges is subject to also compared with
It is small.
In the present embodiment, expansion loop 120 is located at the opening of non-end wavy annular object 102, and with non-end waveform
The free end of ring 102 has certain spacing.Certainly, in other embodiments, expansion loop 120 can also be with non-end wave
The free end connection of shape ring 102.
It should be noted that in order to avoid scratching blood vessel, more sharp part is avoided the formation of as possible on expansion loop 120,
Specifically, the end 1221 of the movable part 122 be in round and smooth shape, the round and smooth structure can substantially be in circle shape, ellipticity, arbitrarily
Curve-like etc., such as the end 1221 of movable part 122 can substantially be in round (please referring to Fig. 6).
Referring to Fig. 7, expansion loop 120 is enclosed construction, the movable part 122 is is set on the expansion loop 120
Waveform segment, the waveform segment include several waveforms.Further, the number of the waveform segment is two, two waveforms
Section is symmetrical arranged.Further, the waveform is at least one of M shapes wave, Z-shaped wave or sine wave.
In a wherein embodiment, there is biocompatible materials composition using a closing at interface 110, can be silk
It shapes after shape braiding or tubulose cutting.Expansion loop 120 is whole oval, in the both sides of long axis respectively there are one waveform segment,
The waveform segment includes several waveforms, and waveform is with the Z-shaped wave of certain rule.After stent discharges in vivo, expansion loop 120
The elastic reaction expansion loop 120 that the waveform segment at place has can be completely from swollen reply shape, to ensure the wheel profile of interface 110
State.
It is appreciated that waveform can also include the combination of a variety of waves, for example, the combination of M shapes wave, sine wave.Certainly, waveform
Section can also be helical structure.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, 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, it is all considered to be the range of this specification record.
Embodiment described above only expresses the several embodiments of the present invention, and description 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 those of ordinary skill in the art are come
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Range.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (15)
1. a kind of branch type overlay film frame, the side branch connected including tubular body and with the tubular body, the tubulose master
Body includes the first bare bracket and the first overlay film set on first bare bracket, and first bare bracket includes at least one non-end
Portion's wavy annular object, the side branch include the second overlay film, and second overlay film is connect with first overlay film, and feature exists
In the interface of first overlay film and second overlay film is provided with the expansion loop along the interface peripheral distribution, and described
Expansion loop is at least partially disposed at the tubular body and is provided on the periphery of the non-end wavy annular object.
2. branch type overlay film frame according to claim 1, which is characterized in that first bare bracket further includes proximal end wave
Shape ring and distal end wavy annular object, at least one non-end wavy annular object are set to the proximal end wavy annular object
Between the distal end wavy annular object, the non-end wavy annular object is split ring, and the expansion loop is at least partially disposed at
The opening of the non-end wavy annular object.
3. branch type overlay film frame according to claim 2, which is characterized in that the expansion loop and the non-end waveform
The free end of ring is connected.
4. branch type overlay film frame according to claim 2, which is characterized in that the number of the non-end wavy annular object
At least two, the expansion loop is connected with all free ends of at least two non-end wavy annular objects.
5. branch type overlay film frame according to claim 2, which is characterized in that the expansion loop includes wire around described
Bulge and the movable part that with the bulge connect of the interface peripheral ring around formation, the bulge is at least partially disposed at described
On the periphery of non-end wavy annular object.
6. branch type overlay film frame according to claim 5, which is characterized in that the expansion loop has close to the proximal end
The peak of wavy annular object and close to the distal end wavy annular object minimum point, the moving part in the minimum point with
The side of the line of the peak.
7. branch type overlay film frame according to claim 6, which is characterized in that the line between the movable part two-end-point
It is parallel with the line between the peak with the minimum point of the expansion loop.
8. according to claim 6~7 any one of them branch type overlay film frame, which is characterized in that the movable part is setting
Notch on the expansion loop.
9. branch type overlay film frame according to claim 8, which is characterized in that the notch is two, and two described scarce
The expansion loop is cut into two bulges along the longitudinal center axis direction arrangement of the tubular body by mouth, each
The both ends of the bulge connect respectively with a non-two corresponding free end of end wavy annular object.
10. according to claim 6~7 any one of them branch type overlay film frame, which is characterized in that the bulge is open loop
Structure, two opposite ends of the bulge are first close to each other each other to extend to form overlapping region with being located remotely from each other again, described
Overlapping region forms the movable part.
11. branch type overlay film frame according to claim 10, which is characterized in that the end of the movable part is in round and smooth
Shape.
12. according to claim 6~7 any one of them branch type overlay film frame, which is characterized in that the movable part is setting
Waveform segment on the expansion loop, the waveform segment include several waveforms.
13. branch type overlay film frame according to claim 12, which is characterized in that the number of the waveform segment is two,
Two waveform segments are symmetrical arranged.
14. branch type overlay film frame according to claim 12, which is characterized in that the waveform for M shapes wave, Z-shaped wave or
At least one of sine wave.
15. branch type overlay film frame according to claim 1, which is characterized in that the vertical central axis of the tubular body
Angle between the longitudinal center axis of line and the side branch is acute angle, and the expansion loop is oval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611267438.1A CN108261254A (en) | 2016-12-31 | 2016-12-31 | Branch type overlay film frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611267438.1A CN108261254A (en) | 2016-12-31 | 2016-12-31 | Branch type overlay film frame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108261254A true CN108261254A (en) | 2018-07-10 |
Family
ID=62771083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611267438.1A Pending CN108261254A (en) | 2016-12-31 | 2016-12-31 | Branch type overlay film frame |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108261254A (en) |
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| CN110420074A (en) * | 2019-06-27 | 2019-11-08 | 深圳市先健畅通医疗有限公司 | Overlay film frame |
| CN110420075A (en) * | 2019-06-27 | 2019-11-08 | 深圳市先健畅通医疗有限公司 | Overlay film frame |
| US11806225B2 (en) | 2019-06-27 | 2023-11-07 | Lifetech Scientific (Shenzhen) Co. Ltd. | Covered stent |
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