CN1977994A - Vascular stent - Google Patents
Vascular stent Download PDFInfo
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- CN1977994A CN1977994A CNA2005101113084A CN200510111308A CN1977994A CN 1977994 A CN1977994 A CN 1977994A CN A2005101113084 A CNA2005101113084 A CN A2005101113084A CN 200510111308 A CN200510111308 A CN 200510111308A CN 1977994 A CN1977994 A CN 1977994A
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- elementary cell
- intravascular stent
- prismatic
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Abstract
The present invention provides a blood vessel support. Said support is made up by engraving an elastic metal tube material, it includes several net rings which are arranged along axial direction and are formed from prismatic basic units, between every two adjacent net rings they are connected by means of several Y-shaped connecting pieces.
Description
Technical field
The present invention relates to a kind of medical apparatus and instruments, particularly a kind of intravascular stent that is applicable in the human vas interventional therapy field.
Background technology
Puncture shaping surgery, be called for short the PTA art, be under the guiding of medical imaging device, utilize puncture needle, seal wire and guiding sheath that the foley's tube of the support that is with deflation is injected human vas, and be transported to the angiostenosis place, expansion with sacculus, support is also strutted, and after sacculus shrank back and removes, the metal rack that produces plastic deformation was then stayed the original place, and embedded blood vessel, play the effect of blood vessel dilating.The method makes that the long-term efficacy of operation is good.
Angle from clinical use, a kind of ideal intravascular stent design will have following technical specification simultaneously: enough radial support power, good axial compliance, little radially bounce-back than and axial LVFS, the metal space occupied area of moderate (10%-20%) compares etc.Because the conditioning each other property of these technical specifications in the supporting structure design makes existing support Design be difficult to reach in these areas effective unification.
The intravascular stent form of prior art has multiple, and they have their own characteristics each, and its purpose all is to improve the radial support intensity of support and axial function such as flexibility.But existing support is difficult to reach effective unification because of its structural limitation aspect these two, though some support expansion back support force is stronger, axially flexibility is not good enough, and metal surface coverage rate and axial LVFS are bigger; Though some support is better softness axially, radial support power deficiency, the metal surface coverage rate is less, causes vascular restenosis easily, so still remain further to be improved.
Summary of the invention
Purpose of the present invention is to provide a kind of and can keeps higher radial support power that axially compliance and vascular compliance, the axial intravascular stent that LVFS is very little, the metal surface coverage rate is moderate are arranged again well after expansion.
The objective of the invention is to be achieved through the following technical solutions: a kind of intravascular stent, engrave by elastic metallic tubing and to form, described support comprises a plurality of net rings of arranging vertically of being made up of the prismatic elementary cell, and is continuous by a plurality of Y shape connectors between each adjacent net ring.
Each prismatic elementary cell of described composition net ring is along short diagonal direction polyphone, between described net ring and the net ring according to the staggered corresponding form arrangement of prismatic elementary cell.
Described Y shape connector is connected between three adjacent prismatic elementary cells of two adjacent net rings, be on two corner angle of two summits of the Y shape connector two adjacent ribs shape elementary cells that are connected a net ring, the end point of Y shape connector is connected on the corner angle of prismatic elementary cell of adjacent net ring.
Described radially positive and negative being staggered of a plurality of Y shape connectors that is connected between the same two adjacent net rings, and the corner angle of each the prismatic elementary cell between the two adjacent net rings all have Y shape connector to link to each other.
The long-diagonal of described prismatic elementary cell and the length ratio of short diagonal are 2: 1, and the distance between the two adjacent net rings is suitable with the length of short diagonal.
The V-shaped part, top of described Y shape connector is deformed into semicircular arc.
The prismatic elementary cell of described composition net ring is 6 or 8.
Intravascular stent of the present invention makes support can keep higher radial support power after expansion owing to adopted above technical scheme, and axially compliance and vascular compliance are arranged again well, and axially LVFS is very little, and the metal surface coverage rate is moderate.Each ingredient of entire bracket has reduced the support each several part and around support counterrotating probability has taken place axially in expansion process symmetrically.
Description of drawings
Fig. 1 launches sketch map for the structure of intravascular stent of the present invention.
The specific embodiment
Referring to Fig. 1, intravascular stent of the present invention, engrave by elastic metallic tubing and to form, this support comprises a plurality of net rings of arranging vertically 1, each net ring 1 all is made up of along short diagonal direction polyphone a plurality of prismatic elementary cells 11, and the long-diagonal of each prismatic elementary cell 11 and the length ratio of short diagonal are 2: 1.Net ring and net the form arrangement that interlocks corresponding according to each prismatic elementary cell between the ring, and the distance between the two adjacent net rings 1 is suitable with the length of the short diagonal of prismatic elementary cell 11.Link to each other by a plurality of Y shape connectors 2 between each adjacent net ring 1, the V-shaped part, top of Y shape connector 2 is deformed into semicircular arc, each Y shape connector 2 is connected between three adjacent prismatic elementary cells 11 of two adjacent net rings 1, be on two corner angle of two summits 21,22 of the Y shape connector two adjacent ribs shape elementary cells 11 that are connected a net ring, the end point 23 of Y shape connector is connected on the corner angle of prismatic elementary cell of adjacent net ring.Be connected a plurality of Y shape connectors 2 radially positive and negative being staggered between the same two adjacent net rings, and the corner angle of each the prismatic elementary cell between the two adjacent net rings there is all Y shape connector to link to each other.
The prismatic elementary cell of forming the net ring in the intravascular stent of the present invention can be 6 or 8, adapts to the blood vessel that varies in size respectively; The number of forming the net ring of support can be 6-10, and concrete net number of rings determines as required.
Claims (7)
1, a kind of intravascular stent is engraved by elastic metallic tubing and to be formed, and it is characterized in that: described support comprises a plurality of net rings of arranging vertically of being made up of the prismatic elementary cell, and is continuous by a plurality of Y shape connectors between each adjacent net ring.
2, intravascular stent as claimed in claim 1 is characterized in that: each prismatic elementary cell of described composition net ring is along short diagonal direction polyphone, between described net ring and the net ring according to the staggered corresponding form arrangement of prismatic elementary cell.
3, intravascular stent as claimed in claim 1, it is characterized in that: described Y shape connector is connected between three adjacent prismatic elementary cells of two adjacent net rings, be on two corner angle of two summits of the Y shape connector two adjacent ribs shape elementary cells that are connected a net ring, the end point of Y shape connector is connected on the corner angle of prismatic elementary cell of adjacent net ring.
4, intravascular stent as claimed in claim 1, it is characterized in that: described radially positive and negative being staggered of a plurality of Y shape connectors that is connected between the same two adjacent net rings, and the corner angle of each the prismatic elementary cell between the two adjacent net rings all have Y shape connector to link to each other.
5, intravascular stent as claimed in claim 1 is characterized in that: the long-diagonal of described prismatic elementary cell and the length ratio of short diagonal are 2: 1, and the distance between the two adjacent net rings is suitable with the length of short diagonal.
6, intravascular stent as claimed in claim 1 is characterized in that: the V-shaped part, top of described Y shape connector is deformed into semicircular arc.
7, intravascular stent as claimed in claim 1 is characterized in that: the prismatic elementary cell of described composition net ring is 6 or 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005101113084A CN1977994A (en) | 2005-12-08 | 2005-12-08 | Vascular stent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005101113084A CN1977994A (en) | 2005-12-08 | 2005-12-08 | Vascular stent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1977994A true CN1977994A (en) | 2007-06-13 |
Family
ID=38129409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005101113084A Pending CN1977994A (en) | 2005-12-08 | 2005-12-08 | Vascular stent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1977994A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010054604A1 (en) * | 2008-11-15 | 2010-05-20 | 微创医疗器械(上海)有限公司 | Intravascular stent for repairing diseased blood vessel |
| CN105832450A (en) * | 2016-05-19 | 2016-08-10 | 孙三友 | Endovascular intervention stent |
-
2005
- 2005-12-08 CN CNA2005101113084A patent/CN1977994A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010054604A1 (en) * | 2008-11-15 | 2010-05-20 | 微创医疗器械(上海)有限公司 | Intravascular stent for repairing diseased blood vessel |
| CN101732116A (en) * | 2008-11-15 | 2010-06-16 | 微创医疗器械(上海)有限公司 | Intravascular stent used for repairing lesion blood vessel |
| CN101732116B (en) * | 2008-11-15 | 2014-04-16 | 上海微创医疗器械（集团）有限公司 | Intravascular stent used for repairing lesion blood vessel |
| CN105832450A (en) * | 2016-05-19 | 2016-08-10 | 孙三友 | Endovascular intervention stent |
| CN105832450B (en) * | 2016-05-19 | 2018-08-24 | 郭莹 | A kind of intravascular intervention holder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20070613 |