CN107714244A - Vein blood vessel is from swollen support - Google Patents
Vein blood vessel is from swollen support Download PDFInfo
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- CN107714244A CN107714244A CN201711010871.1A CN201711010871A CN107714244A CN 107714244 A CN107714244 A CN 107714244A CN 201711010871 A CN201711010871 A CN 201711010871A CN 107714244 A CN107714244 A CN 107714244A
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- Prior art keywords
- blood vessel
- vein blood
- supporting part
- vessel according
- swollen support
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- 210000003462 vein Anatomy 0.000 title claims abstract description 42
- 125000004122 cyclic group Chemical group 0.000 claims abstract description 30
- 239000000463 material Substances 0.000 claims description 9
- 229910001000 nickel titanium Inorganic materials 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims 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 claims description 3
- 235000003283 Pachira macrocarpa Nutrition 0.000 claims 1
- 241001083492 Trapa Species 0.000 claims 1
- 235000014364 Trapa natans Nutrition 0.000 claims 1
- 229910045601 alloy Inorganic materials 0.000 claims 1
- 235000009165 saligot Nutrition 0.000 claims 1
- 238000004873 anchoring Methods 0.000 abstract description 3
- 210000004204 blood vessel Anatomy 0.000 description 18
- 210000003111 iliac vein Anatomy 0.000 description 10
- 210000001367 artery Anatomy 0.000 description 7
- 210000003141 lower extremity Anatomy 0.000 description 6
- 208000011580 syndromic disease Diseases 0.000 description 6
- 206010047249 Venous thrombosis Diseases 0.000 description 5
- 208000007536 Thrombosis Diseases 0.000 description 4
- 206010070995 Vascular compression Diseases 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 3
- 239000007943 implant Substances 0.000 description 3
- 238000002513 implantation Methods 0.000 description 3
- 230000003319 supportive effect Effects 0.000 description 3
- 208000024891 symptom Diseases 0.000 description 3
- 208000004522 May-Thurner syndrome Diseases 0.000 description 2
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 210000003090 iliac artery Anatomy 0.000 description 2
- 210000004705 lumbosacral region Anatomy 0.000 description 2
- 229910001285 shape-memory alloy Inorganic materials 0.000 description 2
- 238000002560 therapeutic procedure Methods 0.000 description 2
- 210000002073 venous valve Anatomy 0.000 description 2
- 206010008190 Cerebrovascular accident Diseases 0.000 description 1
- 208000005189 Embolism Diseases 0.000 description 1
- 206010016654 Fibrosis Diseases 0.000 description 1
- 238000005481 NMR spectroscopy Methods 0.000 description 1
- 208000031481 Pathologic Constriction Diseases 0.000 description 1
- 208000006011 Stroke Diseases 0.000 description 1
- 208000000558 Varicose Ulcer Diseases 0.000 description 1
- 206010058990 Venous occlusion Diseases 0.000 description 1
- HZEWFHLRYVTOIW-UHFFFAOYSA-N [Ti].[Ni] Chemical compound [Ti].[Ni] HZEWFHLRYVTOIW-UHFFFAOYSA-N 0.000 description 1
- 230000001464 adherent effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 230000023555 blood coagulation Effects 0.000 description 1
- 230000002490 cerebral effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 201000002816 chronic venous insufficiency Diseases 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002526 effect on cardiovascular system Effects 0.000 description 1
- 201000006828 endometrial hyperplasia Diseases 0.000 description 1
- 210000003414 extremity Anatomy 0.000 description 1
- 230000004761 fibrosis Effects 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
- BGOFCVIGEYGEOF-UJPOAAIJSA-N helicin Chemical group O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1OC1=CC=CC=C1C=O BGOFCVIGEYGEOF-UJPOAAIJSA-N 0.000 description 1
- 210000003692 ilium Anatomy 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000003447 ipsilateral effect Effects 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 231100000518 lethal Toxicity 0.000 description 1
- 230000001665 lethal effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 208000010125 myocardial infarction Diseases 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000036262 stenosis Effects 0.000 description 1
- 208000037804 stenosis Diseases 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 201000002282 venous insufficiency Diseases 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
- A61F2/82—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
- A61F2/91—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 made from perforated sheets or tubes, e.g. perforated by laser cuts or etched holes
- A61F2/915—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 made from perforated sheets or tubes, e.g. perforated by laser cuts or etched holes with bands having a meander structure, adjacent bands being connected to each other
-
- 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
- A61F2/91—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 made from perforated sheets or tubes, e.g. perforated by laser cuts or etched holes
- A61F2/915—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 made from perforated sheets or tubes, e.g. perforated by laser cuts or etched holes with bands having a meander structure, adjacent bands being connected to each other
- A61F2002/91508—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 made from perforated sheets or tubes, e.g. perforated by laser cuts or etched holes with bands having a meander structure, adjacent bands being connected to each other the meander having a difference in amplitude along the band
-
- 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
- A61F2210/00—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2210/0061—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof swellable
-
- 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
- A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2250/0058—Additional features; Implant or prostheses properties not otherwise provided for
-
- 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
- A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
- A61F2310/00005—The prosthesis being constructed from a particular material
- A61F2310/00011—Metals or alloys
- A61F2310/00023—Titanium or titanium-based alloys, e.g. Ti-Ni alloys
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Optics & Photonics (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Physics & Mathematics (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
Abstract
The invention discloses a kind of vein blood vessel from swollen support, it includes central web supporting part and is separately positioned on the both ends supporting part being connected with central web supporting part：The central web supporting part includes at least two and circumferentially or is circumferentially in turn connected to form S in the directions at certain inclination angle or the corrugated annular arrangement structures of S, adjacent cyclic structure are connected by least one connecting rod；The both ends supporting part includes head end main body and for connecting at least one attachment structure between head end main body and central web supporting part, and the head end main body is the net ring that rhomboidal elementary cell is in turn connected to form.The present invention has a stronger fold resistance, and its compliance is good；Can be flexible from being adapted to vertically；And radial support ability and anchoring ability are good, self-expanding ability is strong, is advantageous to expand vein blood vessel.
Description
Technical field
The present invention relates to one kind to be suitable for vein blood vessel from swollen support, belongs to technical field of medical instruments.
Background technology
Thrombus is that the lethal angiocardiopathy of ranking whole world front three --- myocardial infarction, cerebral apoplexy and phlebothrombosis are fastened
Fill in the co-morbid mechanism of disease.The above two the order of severity is understood extensively by the public；Although phlebothrombosis embolus disease ranks
Three big cardiovascular killers, but regrettably, public awareness rate is but very low.Phlebothrombosis is known as " Silent Killer ", and it is most fearful
Part is that the phlebothrombosis of the overwhelming majority does not have any symptom.Venous thronbosis has a three big principal elements, slow blood flow,
Vein wall damage, high blood coagulation state.Unobstructed blood vessel is kept by vein blood vessel self-expanding stent art, improves blood cloud quality and more
Mend one of passive treatment means of vein wall damage.And this kind of support needs to need targetedly to set according to different placement locations
Meter.
Compared with artery and capillary, the distribution of vein blood vessel is shallower, and tube chamber is larger, and tube wall is relatively thin, and elasticity is small, has
Venous valve, VPV is slow, and it is mainly narrow by external world's deformation, such as artery, lumbar vertebrae compressing, and lumbosacral region physiological bending.Letter
It is single in arteries stenter to implant vein support force being caused excessive, it is flexible inadequate；And matched for the flexibility of blood vessel
Go wrong.Characteristic, the position of specific vein support are only targetedly considered, designing proprietary vein support could meet to be expected
Using.
Iliac Vein Compression Syndrome (Iliac vein compression syndrome, IVCS) refer to right common iliac artery with
Fifth lumbar vertebra oppresses left common iliac vein jointly, and right common iliac artery oppresses left iliac vein in structure, due to the mechanical pressure of continuation
And arteriopalmus cause adhesion in venous lumen, endometrial hyperplasia, fibrosis cause luminal stenosis, occlusion and cause left lower extremity vein to return
Flow the syndrome of obstacle.It is referred to as Cockett syndromes (Cockett syndrome) in Europe, and is primarily referred to as in the U.S.
May-Thurner syndromes (May-Thurner syndrome).Detection of iliac vein compression syndrome (IVCS) is to cause lower limb deeply quiet
The major reason of arteries and veins thrombosis (DVT) and Chronic venous insufficiency.Clinically extremely common, document report is common
84% has different degrees of iliac vein compression in crowd, and more than 2/3 at least 25% is narrow, is clinically to cause left side lower limb deep
The easily ignored major reason of phlebothrombosis.Left iliofemoral vein is the unique trunk path of left lower extremity venous return, once this is quiet
Arteries and veins thrombosis, whole veins of lower extremity backflow obstruction, necessarily cause serious lower extremity swelling and distension and other symptoms, once obstruction is not easy
Lead to again, cause the symptom of suffering limb venous return obstacle often notable, sequelae at a specified future date causes skin-nourishing obstacle, venous ulcer hair
Raw rate is high, and therefore, reconstruction iliac vein efferent tract is particularly significant for reducing its generation, and intracavitary therapy is its first choice treatment at present
Method, more options balloon dilatation and stenting implantation.
Carried out using vein stenter to implant in IVCS therapeutic processes, to avoid the displacement after stenter to implant and ISR, compared with
More documents think that the front end of support needs partly or entirely to enter inferior caval vein.Support is very few into inferior caval vein, later stage support
Easily be pressurized displacement.The researchs such as Hartung are found：Intravascular stent leading portion is completely into inferior caval vein person, postoperative generation offside ilium
The risk of venous occlusion or Deep vain thrombosis only covers iliac vein lesion in below 0.9%-1%, opposite such as support front end,
Not completely into inferior caval vein person, then the iliac vein long term ISR of Ipsilateral or the risk of occlusion are up to 40%.With artery and
Capillary is compared, and the distribution of vein blood vessel is shallower, and tube chamber is larger, and tube wall is relatively thin, and elasticity is small, there is venous valve, and VPV is slow,
It is mainly narrow by external world's deformation, such as artery, lumbar vertebrae compressing, and lumbosacral region physiological bending.Adapted to according to above vein support
Disease and the location expression of placement, and the characteristics of vein blood vessel structure.It is different from the performance characteristics of peripheral arterial support, it is used for
The support of iliac vein expansion should have claimed below and feature.
The vein support feature of table 1
| ● support is placed nothing and is significantly shorter |
| ● there is certain taper |
| ● there is good observability and pliability |
| ● there is higher resistance to compression resistance and ring intensity |
| ● antithrombus formation and platelet adhesion reaction |
| ● nuclear magnetic resonance is compatible |
| ● diameter is in 10-22mm length in 4-10cm scopes |
| ● 2cm radially bending can be born, and intracavitary is projected to without metal ingredient |
| ● can be in blood river outlet slant setting |
For domestic market, the vein support for meeting above-mentioned requirements there is no commercially to occur.
The content of the invention
The technical problems to be solved by the invention are vein blood vessel support requirement features, there is provided a kind of vein blood vessel is from swollen branch
Frame, it has a stronger fold resistance, and its compliance is good；Can be flexible from being adapted to vertically；And radial support ability and anchoring ability
Good, self-expanding ability is strong, is advantageous to expand vein blood vessel.
The present invention tries hard to meet that the technical scheme of above-mentioned requirements is：For a kind of vein blood vessel from swollen support, it includes body, institute
State to shape after body is cut by Nitinol pipe and form；The body includes：
Central web supporting part, the central web supporting part include at least two and circumferentially or circumferentially tilted in certain
The direction at angle is in turn connected to form S or the corrugated annular arrangement structures of S, adjacent cyclic structure pass through at least one connection
Bar is connected；
The both ends head of central web supporting part is separately positioned on, the head includes head end supportive body and for connecting
At least one attachment structure between head end main body and central web supporting part, the head end supportive body are rhomboidal elementary cell
The net ring being in turn connected to form.
Further, the described rack body material is Nitinol, has super elastic characteristics.
Further, the attachment structure is connection arc.
Further, the one end for connecting arc connects the inner opposite angle of corresponding rhomboidal elementary cell in the axial direction, connects the another of arc
One end connects the corresponding crest of adjacent cyclic structure.
Further for preferably improving its fold resistance, connecting rod structure in the shape of a spiral in the axial direction.
Further, in two adjacent cyclic structures, one end of connecting rod connects the trough of previous cyclic structure, connection
The other end of bar connects the crest in latter cyclic structure.
Further for make its insert it is intravascular observation blood vessel be provided with from the position of swollen support, the head end main body
Development structure.
A kind of structure of the development structure of concrete structure is further provided, the development structure is arranged to be at least one
Rhomboidal elementary cell in the axial direction it is outer it is diagonal on developing ring, be provided with developing material on the developing ring.
Further for avoiding occurring the phenomenon of anisotropy in its implantable intravascular, two head portions be respectively near-end head and
Distal tip, the quantity and the quantity of the developing ring of the distal tip of the developing ring on the near-end head are unequal.
Further, the head and/or the central web supporting part are made up of medical nickel-titanium shape memory alloy material.
Further, a diameter of 0.05mm~0.25mm of the wire of cyclic structure is formed；Connecting rod it is a diameter of
0.05mm~0.22mm；Form a diameter of 0.1mm~0.28mm of the wire of rhomboidal elementary cell；Form the gold of attachment structure
Belong to a diameter of 0.05mm~0.22mm of silk.
After employing above-mentioned technical proposal, cyclic structure of the invention is in circumferentially or circumferentially the direction at certain inclination angle
S or the waveform of falling S are in turn connected to form, this structure causes blood vessel to have stronger radial support in the blood vessel from swollen support
Energy；Meanwhile in the case where both ends anchoring is stable, it can kept adherent good in motion by the blood vessel of support supporting zone
It is servo-actuated under state, adjacent cyclic structure is connected by least one connecting rod, and such setting enables to blood vessel from swollen branch
Frame has stronger fold resistance and compliance in the blood vessel, in particular so that spiral helicine structure is presented in connecting rod, makes it have
More preferable compliance；In addition, the present invention is provided with development structure, being capable of its position of real-time monitored when inserting blood vessel from swollen support
Put, convenient implantation；In addition, the quantity of the developing ring of near-end head and distal tip is different, it so can be correctly guided
The direction of implantable intravascular, convenient implantation.
Brief description of the drawings
Fig. 1 is the structural representation of blood vessel of the invention from swollen support；
Fig. 2 is Fig. 1 left view；
Fig. 3 is the stereogram of blood vessel of the invention from swollen support；
Fig. 4 is the partial enlarged drawing on the head of the present invention；
Fig. 5 is the partial enlarged drawing of the attachment structure of the present invention；
Fig. 6 is the partial enlarged drawing of the connecting rod of the present invention；
Fig. 7 is the expanded schematic diagram of blood vessel of the invention from swollen support.
Embodiment
In order that present disclosure is easier to be clearly understood, it is right below according to specific embodiment and with reference to accompanying drawing
The present invention is described in further detail.
As shown in Fig. 1~7, from swollen support, it includes a kind of vein blood vessel：
Central web supporting part, the central web supporting part include at least two and circumferentially or circumferentially tilted in certain
The direction at angle is in turn connected to form S or the corrugated cyclic structures 1 of S, and adjacent cyclic structure 1 passes through at least one connecting rod
2 are connected；Cyclic structure 1 can also be regarded as to be connected in sequence by multiple " W " type structures；
The head at the both ends of central web supporting part is separately positioned on, the head includes head end supportive body 3 and is used for
At least one attachment structure 4 between head end main body 3 and central web supporting part is connected, the head end main body 3 is that rhombus is basic
The net ring that unit 31 is in turn connected to form；In the present embodiment, cyclic structure 1 is provided with multiple, and cyclic structure 1 is circumferentially
S or the waveform of falling S are in turn connected to form in the direction at certain inclination angle；Connecting rod 2 between adjacent cyclic structure 1 is also provided with
Have multiple.
The cyclic structure 1 of the present embodiment is circumferentially in turn connected to form S waveforms, this knot in the direction at certain inclination angle
Structure causes blood vessel to have stronger radial support performance in the blood vessel from swollen support；Meanwhile adjacent cyclic structure 1 is by least
One connecting rod 2 connects, and such setting enables to blood vessel to have stronger fold resistance and submissive in the blood vessel from swollen support
Property.
As shown in figure 5, the attachment structure 4 is connection arc.
As shown in figure 5, one end of connection arc connects the inner opposite angle of corresponding rhomboidal elementary cell 31 in the axial direction, arc is connected
The other end connect the corresponding crest of adjacent cyclic structure 1.
As shown in fig. 6, structure, such set cause this blood vessel from swollen branch to the connecting rod 2 in the shape of a spiral in the axial direction
Frame has more preferable compliance；
As shown in fig. 6, in two adjacent cyclic structures 1, one end of connecting rod 2 connects the ripple of previous cyclic structure 1
Paddy, the other end of connecting rod 2 connect the crest in latter cyclic structure 1；In the present embodiment, the latter ring that connecting rod 2 connects
The crest in crest latter cyclic structure 1 corresponding with the trough of previous cyclic structure 1 in shape structure 1 staggers 2 or 3；
As shown in Fig. 1,7, development structure is provided with the head end main body 3；The development structure is at least one setting
In rhomboidal elementary cell 31 in the axial direction it is outer it is diagonal on developing ring 5, be provided with developing material on the developing ring 5, it is described
Developing material can be golden or silver-colored or other developing materials being plated on developing ring 5；In the present embodiment, every
Developing ring 5 could be arranged to 2~6, the center of developing ring 5 be it is hollow, and the inflated diameter of developing ring 5 be 0.5mm~
0.8mm, form a diameter of 0.1mm~0.2mm of the wire of developing ring 5.
As shown in fig. 7, two head portions are respectively near-end head and distal tip, the number of the developing ring 5 on the near-end head
Amount is unequal with the quantity of the developing ring 5 of the distal tip, and this makes it possible to the direction for correctly guiding its implantable intravascular, side
Just it is implanted into.
The head and/or the central web supporting part are made up of Medical memory alloy material, can be specifically using sharp
Light engraving technology is completed；Further, material can be Nickel-titanium alloy for medical purpose.
Form a diameter of 0.05mm~0.25mm of the wire of cyclic structure 1；A diameter of 0.05mm of connecting rod 2~
0.22mm；Form a diameter of 0.1mm~0.28mm of the wire of rhomboidal elementary cell 31；Form the wire of attachment structure 4
A diameter of 0.05mm~0.22mm；In the present embodiment, blood vessel can be 5~16mm from the caliber of swollen support, and length can be with
For 20mm~200mm.
Particular embodiments described above, pair present invention solves the technical problem that, technical scheme and beneficial effect carry out
It is further described, should be understood that the specific embodiment that the foregoing is only the present invention, is not limited to this
Invention, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc., should be included in this hair
Within bright protection domain.
Claims (10)
1. a kind of vein blood vessel is from swollen support, it is characterised in that it includes body, and the body is fixed after being cut by Nitinol pipe
Type forms；The body includes：
Central web supporting part, the central web supporting part include at least two circumferentially or circumferentially in certain inclination angle
Direction is in turn connected to form S or the corrugated annular arrangement structures (1) of S, adjacent cyclic structure (1) pass through at least one company
Extension bar (2) is connected；
It is separately positioned on the both ends supporting part being connected with central web supporting part, including head end main body (3) and for connecting head end
At least one attachment structure (4) between main body (3) and central web supporting part, the head end main body (3) are that rhombus is substantially single
The net ring that first (31) are in turn connected to form.
2. vein blood vessel according to claim 1 is from swollen support, it is characterised in that：The described rack body material is NiTi
Alloy, there are super elastic characteristics.
3. vein blood vessel according to claim 1 is from swollen support, it is characterised in that：The attachment structure (4) is connection arc.
4. vein blood vessel according to claim 3 is from swollen support, it is characterised in that：The one end for connecting arc connects corresponding water chestnut
The inner opposite angle of shape elementary cell (31) in the axial direction, the other end for connecting arc connect the corresponding crest of adjacent cyclic structure (1).
5. vein blood vessel according to claim 1 is from swollen support, it is characterised in that：The connecting rod (2) is in the axial direction
Helicoidal structure.
6. vein blood vessel according to claim 1 is from swollen support, it is characterised in that：In two adjacent cyclic structures (1)
In, one end of connecting rod (2) connects the trough of previous cyclic structure (1), and the other end of connecting rod (2) connects latter cyclic structure
(1) crest on.
7. vein blood vessel according to claim 1 is from swollen support, it is characterised in that：It is provided with the head end main body (3)
Development structure.
8. vein blood vessel according to claim 7 is from swollen support, it is characterised in that：The development structure sets to be at least one
Be placed in rhomboidal elementary cell (31) in the axial direction it is outer it is diagonal on developing ring (5), be provided with development material on the developing ring (5)
Material.
9. vein blood vessel according to claim 8 is from swollen support, it is characterised in that：Two head portions be respectively near-end head and
Distal tip, the quantity of the developing ring (5) on the near-end head and the quantity of the developing ring (5) of the distal tip are unequal.
10. vein blood vessel according to claim 1 is from swollen support, it is characterised in that：Form the wire of cyclic structure (1)
A diameter of 0.05mm~0.25mm；A diameter of 0.05mm~0.22mm of connecting rod (2)；Form rhomboidal elementary cell (31)
A diameter of 0.1mm~0.28mm of wire；Form a diameter of 0.05mm~0.22mm of the wire of attachment structure (4).
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