CN109350316A - Vascular stent monomer and vascular stent - Google Patents
Vascular stent monomer and vascular stent Download PDFInfo
- Publication number
- CN109350316A CN109350316A CN201811315239.2A CN201811315239A CN109350316A CN 109350316 A CN109350316 A CN 109350316A CN 201811315239 A CN201811315239 A CN 201811315239A CN 109350316 A CN109350316 A CN 109350316A
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- Prior art keywords
- intravascular stent
- monomer
- seamed edge
- vascular stent
- polygon
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Classifications
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- 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
-
- 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
- A61F2250/0067—Means for introducing or releasing pharmaceutical products into the body
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Heart & Thoracic Surgery (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
一种血管支架单体及血管支架，涉及医疗器械技术领域。一种血管支架单体，包括a底面、b底面与棱边，a底面与b底面相互平行，a底面与b底面均为多边形且由多边形的各边组成，a底面在b底面的投影被包含于b底面内，a底面上的顶点通过棱边连接b底面上相近的顶点，a底面及b底面上的每个顶点均有且只有一条棱边与其连接，棱边包括Y形棱边。一种血管支架，其由若干个上述的血管支架单体衔接而成，除了分别处于血管支架的头尾的两个血管支架单体外，任一血管支架单体的a底面都与另一个血管支架单体的a底面接合，任一血管支架单体的b底面也与另一个血管支架单体的b底面接合。
A vascular stent monomer and a vascular stent relate to the technical field of medical devices. A vascular stent monomer, comprising a bottom surface, b bottom surface and edges, a bottom surface and b bottom surface are parallel to each other, a bottom surface and b bottom surface are polygons and are composed of polygonal sides, the projection of a bottom surface on b bottom surface is included In the bottom surface of b, the vertices on the bottom surface of a are connected to the adjacent vertices on the bottom surface of b through the edge. A vascular stent, which is formed by connecting a plurality of the above-mentioned vascular stent monomers, except for the two vascular stent monomers located at the head and tail of the vascular stent respectively, the a bottom surface of any vascular stent monomer is connected to another blood vessel. The a bottom surface of the stent unit is joined, and the b bottom surface of any vascular stent unit is also joined to the b bottom surface of the other vascular stent unit.
Description
Technical field
The present invention relates to the field of medical instrument technology, more particularly to a kind of intravascular stent monomer and intravascular stent.
Background technique
In intravascular stent operation, inner support is placed in reach support stenosis occlusion section blood vessel in lesion, reduces blood vessel
Elastical retraction and again moulding, and the purpose for keeping lumen blood flow unobstructed.In prior art, the metallic support application of early stage is faced
The curative effect to attract people's attention is achieved after bed treatment, but it easily leads to thrombosis, restenosis rate is high, and will cause vascular wall damage
Wound.And the overlay film frame and biomaterial scaffolds newly developed belong to degradation material, the mechanical properties such as rigidity are obvious
Deficiency, after will lead to biodegradable stent implantation narrow blood vessel, because support performance deficiency leads to blood vessel during its dynamic is on active service
It reduces again.When most of stent-expansion, supporter, which circumferentially deforms, makes bracket axial dimension shorten, axial cripetura rate compared with
It is high.In addition, to the pressure of vascular wall when existing intravascular stent can not reduce blood flow.
Summary of the invention
It is an object of the invention to avoid intravascular stent mechanical property deficiency in the prior art and cannot reduce blood stream
The problem of when dynamic to the pressure of vascular wall, and a kind of intravascular stent monomer and intravascular stent are provided to realize the branch to stabilization of vascular
Support, reduce blood vessel again minification and when reducing blood flow to the pressure of vascular wall.
The purpose of the present invention is achieved through the following technical solutions:
A kind of intravascular stent monomer comprising the bottom surface a, the bottom surface b and seamed edge, the bottom surface a are parallel to each other with the bottom surface b, institute
It states the bottom surface a to be polygon with the bottom surface b and be made of each side of the polygon, throwing of the bottom surface a in the bottom surface b
Shadow is contained in the bottom surface b, and the vertex on the bottom surface a connects similar vertex on the bottom surface b by the seamed edge,
Each vertex on the bottom surface a and the bottom surface b has and only a seamed edge is connected thereto, and the seamed edge includes Y
Shape seamed edge.
Preferably, the bottom surface a and the bottom surface b are the irregular and polygon of different numbers edge or the bottom surface a and institute
State the polygon that the bottom surface b is rule and different numbers edge.
Preferably, the bottom surface a and the bottom surface b, one is regular polygon, another is irregular polygon.
Preferably, the bottom surface a and the bottom surface b, one is pentagon, another is hexagon, and the seamed edge includes
One Y shape seamed edge and four straight seamed edges.
Preferably, the bottom surface a is regular pentagon, and the bottom surface b is hexagon and is non-regular hexagonal.
Preferably, each side of the bottom surface a and the bottom surface b is cylindrical body, and the seamed edge is cylindrical body, the seamed edge
For straight seamed edge or arc seamed edge, the seamed edge includes at least 2 Y shape seamed edges.
Preferably, projection of the geometric center of the bottom surface a in the bottom surface b is overlapped with the geometric center of the bottom surface b,
Half of the area of the bottom surface a not less than the area of the bottom surface b.
A kind of intravascular stent is connected, in addition to being respectively at the blood by several above-mentioned intravascular stent monomers
Outside the two end to end intravascular stent monomer of pipe holder, the bottom surface a of any intravascular stent monomer all with another blood vessel branch
The bottom surface a of frame monomer engages, and the bottom surface b of any intravascular stent monomer is also and described in another intravascular stent monomer
The engagement of the bottom surface b.
Preferably, the intravascular stent is the bracket made by non-crystalline material, and appearance is coated with thin polymer film, surface
Medication coat is coated with the risk for reducing thrombosis and neointimal hyperplasia.
Preferably, the intravascular stent is the bracket made by zirconium-base amorphous material.
Beneficial effects of the present invention:
Mechanical condition needed for the structure of this intravascular stent monomer meets support blood vessels wall, structure can be in brackets by vascular wall
Enough structural stabilities are still kept when extruding force, wherein Y shape seamed edge is the knot that bracket plays major stable effect in deformation
Structure.
In addition, blood is during flowing through this intravascular stent, blood according to fluid continuity equation and Bernoulli equation
Flow velocity can be increased at the position that intravascular stent monomer local radius becomes smaller, therefore blood declines the pressure of vascular wall therewith.
After forming thrombus when the growth of vascular wall adaptability fits to intravascular stent outer surface or on the outside of intravascular stent, this Bernoulli Jacob
Effect can be more obvious.In intravascular stent, when the effect that continuous intravascular stent monomer generates is conducive to reduce blood flow
To the pressure of vascular wall, the risk that aneurysm increases and ruptures can reduce.
To blood when the invention avoids intravascular stent mechanical property deficiency in the prior art and blood flow cannot be reduced
The problem of pressure of tube wall, proposes a kind of intravascular stent monomer and intravascular stent to realize the support to stabilization of vascular, reduces blood
To the pressure of vascular wall when managing minification again and reducing blood flow, the risk that aneurysm increases and ruptures can reduce.
Detailed description of the invention
Invention is described further using attached drawing, but the embodiments in the accompanying drawings do not constitute any limitation to the present invention,
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to the following drawings
Its attached drawing.
Fig. 1 is a kind of structural schematic diagram of intravascular stent of the invention.
Fig. 2 is a kind of structural schematic diagram of intravascular stent monomer of the invention.
It include: seamed edge 1, intravascular stent monomer 2, the bottom surface b 3, the bottom surface a 4, Y shape seamed edge 5, intravascular stent 6 in figure.
Specific embodiment
The invention will be further described with the following Examples.
As shown in Figure 1 to Figure 2, a kind of intravascular stent monomer 2 of the present embodiment comprising the bottom surface a 4, the bottom surface b 3 and seamed edge
1, the bottom surface a 4 is parallel to each other with the bottom surface b 3, and the bottom surface a 4 and the bottom surface b 3 are polygon and by described polygon
Each side of shape forms, and the bottom surface a 4 is contained in the bottom surface b 3 in the projection of the bottom surface b 3, on the bottom surface a 4
Vertex connects similar vertex on the bottom surface b 3, each top on the bottom surface a 4 and the bottom surface b 3 by the seamed edge 1
Point has and only a seamed edge 1 is connected thereto, and the seamed edge 1 includes Y shape seamed edge 5.
Mechanical condition needed for the structure of this intravascular stent monomer 2 meets support blood vessels wall, structure can bracket by
Enough structural stabilities are still kept when vascular wall extruding force, wherein Y shape seamed edge 5 is that bracket plays major stable work in deformation
Structure.
Preferably, the bottom surface a 4 is regular pentagon, and the bottom surface b 3 is hexagon and is non-regular hexagonal, the seamed edge
1 includes a Y shape seamed edge 5 and four arc seamed edges 1.This structure is conducive to intravascular stent monomer 2 is made to form better structure steady
It is qualitative.
Preferably, each side of the bottom surface a 4 and the bottom surface b 3 is cylindrical body, and the seamed edge 1 is cylindrical body, in this way
Shape be conducive to that intravascular stent monomer 2 is avoided to cause to damage to vascular wall.The seamed edge 1 is that arc seamed edge is certain special to meet
Shape and angle requirement.The seamed edge 1 includes at least 2 Y shape seamed edges 5, so that intravascular stent monomer 2 is formed preferably
Structural stability.
Preferably, projection and the geometric center weight of the b bottom surface 3 of the geometric center of the bottom surface a 4 in the bottom surface b 3
It closes, the area of the bottom surface a 4 is not less than the half of the area of the bottom surface b 3, so that the formation of intravascular stent monomer 2 is more sharp
In the structure of support blood vessels.
The present embodiment further includes a kind of intravascular stent 6, is connected by several above-mentioned intravascular stent monomers 2, is removed
It is respectively at outside the two end to end intravascular stent monomer 2 of the intravascular stent 6, the bottom a of any intravascular stent monomer 2
Face 4 is all engaged with the bottom surface a 4 of another intravascular stent monomer 2, the bottom surface b 3 of any intravascular stent monomer 2 also with
The bottom surface b 3 of another intravascular stent monomer 2 engages.
According to fluid continuity equation and Bernoulli equation, blood is during flowing through this intravascular stent 6, the stream of blood
Speed can increase at the position that 2 local radius of intravascular stent monomer becomes smaller, therefore blood declines the pressure of vascular wall therewith.Work as blood
After forming thrombus when the growth of tube wall adaptability fits to 6 outer surface of intravascular stent or on the outside of intravascular stent 6, this Bernoulli Jacob's effect
It should can be more obvious.In intravascular stent 6, when the effect that continuous intravascular stent monomer 2 generates is conducive to reduce blood flow
To the pressure of vascular wall, the risk that aneurysm increases and ruptures can reduce.
Preferably, the intravascular stent appearance is coated with thin polymer film with for medicament-carried, surface is coated with drug painting
Layer is to reduce thrombosis and neointimal hyperplasia risk after stenter to implant.
Preferably, the intravascular stent is the bracket made by zirconium-base amorphous material.Zirconium-base amorphous alloy material has height
Tensile strength, high elastic energy, high impact fracture performance, high corrosion resistance, good ductility, excellent intrinsic low
Frequency vibration damping capacity, high electro catalytic activity, high bioaffinity have good magnetic property after adding iron, in blood vessel
Dynamic in complexity in environment is with good stability during being on active service.The intravascular stent made by zirconium-base amorphous alloy material
The problem of 6 are conducive to avoid thrombosis, and restenosis rate is high, cause vascular damaged, and solve support shaft when the stent expands
It shortens to size, the axial higher problem of cripetura rate.
When this embodiment avoids intravascular stent mechanical property deficiency in the prior art and blood flow cannot be reduced pair
The problem of pressure of vascular wall, proposes that a kind of intravascular stent monomer and intravascular stent to realize the support to stabilization of vascular, reduce
Blood vessel again minification and when reducing blood flow to the pressure of vascular wall, can reduce aneurysm and increase and the risk of rupture.
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than the present invention is protected
The limitation of range is protected, although explaining in detail referring to preferred embodiment to the present invention, those skilled in the art are answered
Work as understanding, it can be with modification or equivalent replacement of the technical solution of the present invention are made, without departing from the reality of technical solution of the present invention
Matter and range.
Claims (10)
1. a kind of intravascular stent monomer, it is characterised in that: including the bottom surface a, the bottom surface b and seamed edge, the bottom surface a and the bottom surface b
It is parallel to each other, the bottom surface a is polygon with the bottom surface b and is made of each side of the polygon, and the bottom surface a is in institute
The projection for stating the bottom surface b is contained in the bottom surface b, and the vertex on the bottom surface a is connected on the bottom surface b by the seamed edge
Each vertex on similar vertex, the bottom surface a and the bottom surface b has and only a seamed edge is connected thereto, institute
Stating seamed edge includes Y shape seamed edge.
2. a kind of intravascular stent monomer as described in claim 1, it is characterised in that: the bottom surface a is not advise with the bottom surface b
Then and the polygon of different numbers edge or the bottom surface a and the bottom surface b be rule and different numbers edge polygon.
3. a kind of intravascular stent monomer as described in claim 1, it is characterised in that: the bottom surface a and the bottom surface b, one
For regular polygon, another is irregular polygon.
4. a kind of intravascular stent monomer as described in claim 1, it is characterised in that: the bottom surface a and the bottom surface b, one
For pentagon, another is hexagon, and the seamed edge includes a Y shape seamed edge and four straight seamed edges.
5. a kind of intravascular stent monomer as claimed in claim 4, it is characterised in that: the bottom surface a is regular pentagon, the b
Bottom surface is hexagon and is non-regular hexagonal.
6. a kind of intravascular stent monomer as described in claim 1, it is characterised in that: each side of the bottom surface a and the bottom surface b
For cylindrical body, the seamed edge is cylindrical body, and the seamed edge is straight seamed edge or arc seamed edge, and the seamed edge includes at least 2 Y
Shape seamed edge.
7. a kind of intravascular stent monomer as described in claim 1, it is characterised in that: the geometric center of the bottom surface a is in the b
The projection of bottom surface is overlapped with the geometric center of the bottom surface b, and the area of the bottom surface a is not less than the two of the area of the bottom surface b
/ mono-.
8. a kind of intravascular stent, it is characterised in that: held in the mouth by the described in any item intravascular stent monomers of several claims 1 to 7
It connects, other than the two end to end intravascular stent monomer for being respectively at the intravascular stent, any intravascular stent monomer
The bottom surface a is all engaged with the bottom surface a of another intravascular stent monomer, the bottom surface b of any intravascular stent monomer
It is engaged with the bottom surface b of another intravascular stent monomer.
9. a kind of intravascular stent as claimed in claim 8, it is characterised in that: the intravascular stent is made by non-crystalline material
Bracket, appearance are coated with medication coat coated with thin polymer film, surface.
10. a kind of intravascular stent as claimed in claim 9, it is characterised in that: the intravascular stent is by zirconium-base amorphous material
The bracket of production.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811315239.2A CN109350316B (en) | 2018-11-06 | 2018-11-06 | A kind of vascular stent monomer and vascular stent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811315239.2A CN109350316B (en) | 2018-11-06 | 2018-11-06 | A kind of vascular stent monomer and vascular stent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109350316A true CN109350316A (en) | 2019-02-19 |
| CN109350316B CN109350316B (en) | 2024-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811315239.2A Active CN109350316B (en) | 2018-11-06 | 2018-11-06 | A kind of vascular stent monomer and vascular stent |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109925104A (en) * | 2019-04-29 | 2019-06-25 | 哈尔滨工业大学 | Novel truss type human pipeline's bracket |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5507771A (en) * | 1992-06-15 | 1996-04-16 | Cook Incorporated | Stent assembly |
| US5800393A (en) * | 1997-03-07 | 1998-09-01 | Sahota; Harvinder | Wire perfusion catheter |
| US20030135268A1 (en) * | 2000-04-11 | 2003-07-17 | Ashvin Desai | Secure stent for maintaining a lumenal opening |
| US20040167635A1 (en) * | 2003-02-24 | 2004-08-26 | Allium Inc | Stent |
| US20080262604A1 (en) * | 2007-04-23 | 2008-10-23 | Max Stengel | Vessel implant for the treatment of an aneurysm |
| US20090287293A1 (en) * | 2008-05-15 | 2009-11-19 | Mailhot Jr Robert | Magnetically induced radial expansion vascular stent |
| CN209316165U (en) * | 2018-11-06 | 2019-08-30 | 广东工业大学 | A kind of vascular stent monomer and vascular stent |
-
2018
- 2018-11-06 CN CN201811315239.2A patent/CN109350316B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5507771A (en) * | 1992-06-15 | 1996-04-16 | Cook Incorporated | Stent assembly |
| US5800393A (en) * | 1997-03-07 | 1998-09-01 | Sahota; Harvinder | Wire perfusion catheter |
| US20030135268A1 (en) * | 2000-04-11 | 2003-07-17 | Ashvin Desai | Secure stent for maintaining a lumenal opening |
| US20040167635A1 (en) * | 2003-02-24 | 2004-08-26 | Allium Inc | Stent |
| US20080262604A1 (en) * | 2007-04-23 | 2008-10-23 | Max Stengel | Vessel implant for the treatment of an aneurysm |
| US20090287293A1 (en) * | 2008-05-15 | 2009-11-19 | Mailhot Jr Robert | Magnetically induced radial expansion vascular stent |
| CN209316165U (en) * | 2018-11-06 | 2019-08-30 | 广东工业大学 | A kind of vascular stent monomer and vascular stent |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109925104A (en) * | 2019-04-29 | 2019-06-25 | 哈尔滨工业大学 | Novel truss type human pipeline's bracket |
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| Publication number | Publication date |
|---|---|
| CN109350316B (en) | 2024-03-12 |
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