CN1977778B - Vascular stent - Google Patents
Vascular stent Download PDFInfo
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- CN1977778B CN1977778B CN 200510111307 CN200510111307A CN1977778B CN 1977778 B CN1977778 B CN 1977778B CN 200510111307 CN200510111307 CN 200510111307 CN 200510111307 A CN200510111307 A CN 200510111307A CN 1977778 B CN1977778 B CN 1977778B
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Abstract
The present invention relates to a blood vessel support. It is made up by using elastic metal tube material through an engraving process. Said support includes several net-rings which are arranged along axial direction and formed from elliptic basic units. After having been expanded said blood vessel support not only can retain higher radial supporting force, but also has good axial flexibility and blood vessel compliance.
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 oval elementary cell, and the S shape connector by a plurality of inclinations between each adjacent net ring is continuous.
Each oval elementary cell of described composition net ring links to each other along the minor axis direction of ellipse, between described net ring and the net ring according to the staggered corresponding form arrangement of oval elementary cell.
Described S shape connector is connected between the two adjacent oval elementary cells of two adjacent net rings, its junction point is on the projecting point of oval elementary cell, the incline direction that is connected a plurality of S shape connectors between the same two adjacent oval elementary cells is identical, and a plurality of S shape connectors that are connected between the different two adjacent net rings are staggered and the staggered change of incline direction vertically.
The major diameter of described oval elementary cell is 3: 2 with the ratio of minor axis.
The oval elementary cell of described composition net ring is 6, and the described S shape connector that is connected between the adjacent net ring is two, and two S shape connectors are disposed in an evenly spaced relation between the two adjacent net rings.
The oval elementary cell of described composition net ring is 6, and the described S shape connector that is connected between the adjacent net ring is 3, and 3 S shape connectors are disposed in an evenly spaced relation between the two adjacent net rings.
The oval elementary cell of described composition net ring is 8, and the described S shape connector that is connected between the adjacent net ring is two, and two S shape connectors are disposed in an evenly spaced relation between the two adjacent net rings.
The oval elementary cell of described composition net ring is 8, and the described S shape connector that is connected between the adjacent net ring is 4, and 4 S shape connectors are disposed in an evenly spaced relation between the two adjacent net rings.
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 is engraved by elastic metallic tubing and to be formed, and this support comprises a plurality of net rings of arranging vertically of being made up of oval elementary cell 11 1, and the S shape connector 2 by a plurality of inclinations between each adjacent net ring is continuous.The major diameter of oval elementary cell 11 is 3: 2 with the ratio of minor axis, forms each oval minor axis direction in oval elementary cell 11 edges of netting ring 1 and links to each other, and in entire bracket, nets ring and nets between the ring according to the staggered corresponding form arrangement of oval elementary cell.S shape connector 2 is connected between the two adjacent oval elementary cells 11 of two adjacent net rings 1, its junction point is on the projecting point of oval elementary cell, in entire bracket, the incline direction that is connected a plurality of S shape connectors 2 between the same two adjacent oval elementary cells is identical, and a plurality of S shape connectors 2 that are connected between the different two adjacent net rings are staggered and the staggered change of incline direction vertically.
Intravascular stent of the present invention can be formed net ring by 6 oval elementary cells, evenly connects two or 3 S shape connectors between each adjacent net ring at interval, and two or 3 S shape connectors are disposed in an evenly spaced relation between the two adjacent net rings.Entire bracket can be connected and composed by S shape connector by 6-10 net ring, and the interior concrete net number of rings of support determines as required.
Intravascular stent of the present invention can also be formed net ring by 8 oval elementary cells, evenly connects two or 4 S shape connectors between each adjacent net ring at interval, and two or 4 S shape connectors are disposed in an evenly spaced relation between the two adjacent net rings.Entire bracket can be connected and composed by S shape connector by 6-10 net ring, and the interior concrete net number of rings of support determines as required.
Claims (6)
1. intravascular stent is engraved by elastic metallic tubing and to be formed, and described support comprises a plurality of net rings of arranging vertically of being made up of oval elementary cell, and the S shape connector by a plurality of inclinations between each adjacent net ring is continuous; It is characterized in that: described S shape connector is connected between the two adjacent oval elementary cells of two adjacent net rings, its junction point is on the projecting point of oval elementary cell, the incline direction that is connected a plurality of S shape connectors between the same two adjacent net rings is identical, and a plurality of S shape connectors that are connected between the different two adjacent net rings are staggered and the staggered change of incline direction vertically.
2. intravascular stent as claimed in claim 1 is characterized in that: the major diameter of described oval elementary cell is 3: 2 with the ratio of minor axis.
3. intravascular stent as claimed in claim 1, it is characterized in that: the oval elementary cell of described composition net ring is 6, the described S shape connector that is connected between the adjacent net ring is two, and two S shape connectors are disposed in an evenly spaced relation between the two adjacent net rings.
4. intravascular stent as claimed in claim 1 is characterized in that: the oval elementary cell of described composition net ring is 6, and the described S shape connector that is connected between the adjacent net ring is 3, and 3 S shape connectors are disposed in an evenly spaced relation between the two adjacent net rings.
5. intravascular stent as claimed in claim 1, it is characterized in that: the oval elementary cell of described composition net ring is 8, the described S shape connector that is connected between the adjacent net ring is two, and two S shape connectors are disposed in an evenly spaced relation between the two adjacent net rings.
6. intravascular stent as claimed in claim 1 is characterized in that: the oval elementary cell of described composition net ring is 8, and the described S shape connector that is connected between the adjacent net ring is 4, and 4 S shape connectors are disposed in an evenly spaced relation between the two adjacent net rings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510111307 CN1977778B (en) | 2005-12-08 | 2005-12-08 | Vascular stent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510111307 CN1977778B (en) | 2005-12-08 | 2005-12-08 | Vascular stent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1977778A CN1977778A (en) | 2007-06-13 |
| CN1977778B true CN1977778B (en) | 2011-01-12 |
Family
ID=38129206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510111307 Active CN1977778B (en) | 2005-12-08 | 2005-12-08 | Vascular stent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1977778B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102657564B (en) * | 2012-05-10 | 2014-11-12 | 大连理工大学 | Biodegradable vascular scaffold |
| CN104127266A (en) * | 2014-06-16 | 2014-11-05 | 苏州固基电子科技有限公司 | Drug-loading vascular stent |
| CN104127268A (en) * | 2014-06-16 | 2014-11-05 | 苏州固基电子科技有限公司 | Vascular stent firm in supporting |
| CN104127269B (en) * | 2014-06-16 | 2017-01-18 | 苏州固基电子科技有限公司 | Vascular stent |
| CN104998342A (en) * | 2015-07-22 | 2015-10-28 | 严聪颖 | Medicine-carrying slow release apparatus for uterus, and implantation method thereof |
| CN105796218A (en) * | 2016-03-08 | 2016-07-27 | 黄连军 | Covered stent |
| CN106618821B (en) * | 2017-01-06 | 2018-03-20 | 青岛市第三人民医院 | A kind of intravascular stent for preventing reangiostenosis and preparation method thereof |
| CN106580528A (en) * | 2017-02-04 | 2017-04-26 | 成都鼎信致远科技有限公司 | Coronary stent for preventing restenosis |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6264685B1 (en) * | 1999-07-06 | 2001-07-24 | Datascope Investment Corp. | Flexible high radial strength stent |
| CN2502717Y (en) * | 2001-12-10 | 2002-07-31 | 董何彦 | Wave-shape coronary metal frame |
| CN2577878Y (en) * | 2002-10-18 | 2003-10-08 | 贾国良 | Magnetic vascular internal stents |
| CN2695012Y (en) * | 2004-04-02 | 2005-04-27 | 北京美中双和医疗器械有限公司 | Lattice type blood resel dilator |
| CN1688264A (en) * | 2002-07-31 | 2005-10-26 | 尤尼森治疗学股份有限公司 | Flexible and conformable stent and method of forming same |
-
2005
- 2005-12-08 CN CN 200510111307 patent/CN1977778B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6264685B1 (en) * | 1999-07-06 | 2001-07-24 | Datascope Investment Corp. | Flexible high radial strength stent |
| CN2502717Y (en) * | 2001-12-10 | 2002-07-31 | 董何彦 | Wave-shape coronary metal frame |
| CN1688264A (en) * | 2002-07-31 | 2005-10-26 | 尤尼森治疗学股份有限公司 | Flexible and conformable stent and method of forming same |
| CN2577878Y (en) * | 2002-10-18 | 2003-10-08 | 贾国良 | Magnetic vascular internal stents |
| CN2695012Y (en) * | 2004-04-02 | 2005-04-27 | 北京美中双和医疗器械有限公司 | Lattice type blood resel dilator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1977778A (en) | 2007-06-13 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHANGHAI KINDLY ENTERPRISE DEVELOPMENT GROUP CO., Free format text: FORMER NAME: SHANGHAI KANGDELAI ENTERPRISE DEVELOPMENT GROUP CO., LTD. |
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| CP03 | Change of name, title or address |
Address after: 201803, Shanghai, Jiading District high tide Road, No. 1, building 658, 2 Patentee after: Shanghai Kindly Enterprise Development Group Co., Ltd. Address before: 201803 Shanghai city Jiading District Huajiang Road 668 Lane 18 Patentee before: Shanghai Kangdelai Enterprise Development Group Co., Ltd. |