CN1977777B - Pipeline type vascular stent - Google Patents
Pipeline type vascular stent Download PDFInfo
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- CN1977777B CN1977777B CN 200510111306 CN200510111306A CN1977777B CN 1977777 B CN1977777 B CN 1977777B CN 200510111306 CN200510111306 CN 200510111306 CN 200510111306 A CN200510111306 A CN 200510111306A CN 1977777 B CN1977777 B CN 1977777B
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Abstract
The present invention provides a tube-net type blood vessel sent carved by a metal round tube, comprising a plurality of ring supporting bodies which are identical in structure and arranged along the axial direction, wherein every two ring supporting bodies are one group, two ring supporting bodies in the group are arranged in a mirror symmetry manner, and connected through a plurality of connectors with a shape like a Chinese character 'Ji', the groups are aligned and connected through a plurality of connectors with a lateral '{' shape. The tube-net type blood vessel sent of the invention not only keeps higher radial support after expanded, but also has good axial flexibility and blood vessel compliance, small axial shortening rate, as well as moderate metallic surface coverage. Each component part of the whole sent is uniform and symmetric, which reduces the possibility that each part of the sent rotates relatively around the sent in the axial direction during the expansion.
Description
Technical field
The present invention relates to a kind of medical apparatus and instruments, particularly a kind of pipeline type vascular 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 pipeline type vascular 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 pipeline type vascular stent, engrave by metal circular tube and to form, described support comprises a plurality of structures annular support body identical, that arrange vertically, per two annular support body are one group, organize interior two annular support body and be mirror symmetry arrangement and connect, align between group and the group and arrange and pass through a plurality of by a plurality of " several " font connector
The shape connector connects.
Described annular support body is by a plurality of figure of three structural members and a plurality of
Shape structural member or a plurality of anti-figure of three structural member and a plurality of
Shape structural member waveform alternately polyphone forms, in two adjacent annular support body, and the anti-figure of three structural member in corresponding another annular support body of the figure of three structural member in the annular support body, in the annular support body
In corresponding another annular support body of shape structural member
The shape structural member.
Between the figure of three structural member and anti-figure of three structural member in described " several " font connector is connected and organizes in two annular support body, its junction point is at outstanding position, the centre of figure of three structural member and anti-figure of three structural member, and the middle part ledge of " several " font connector is positioned at
With
Between the shape structural member.
Described
The shape connector be connected the group with the group between two adjacent annular support body in figure of three structural member and a side of anti-figure of three structural member, its junction point figure of three structural member and
The intersection of shape structural member and anti-figure of three structural member with
The intersection of shape structural member, its main part is positioned at
With
Between the shape structural member.
Described " several " font connector that is connected between same group two annular support body is three, and three " several " font connectors are along the circle spacing uniform distribution, described be connected group and organize between between the two adjacent annular support body
The shape connector is two, two
The shape connector is along the nearly uniform distribution of circumference, and in entire bracket, " several " font connector that is connected in the two adjacent groups annular support body is staggered, and is connected between group and the group
The shape connector is arranged twist.
In the described annular support body
With
The shape structural member has long and short two kinds of versions, and the length in same annular support body
Shape structural member and weak point
The shape structural member alternately occurs or is long
Shape structural member and weak point
The shape structural member alternately occurs, and the middle part ledge of described " several " font connector is positioned at weak point
With
Between the shape structural member.
Pipeline type vascular 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 pipeline type vascular stent of the present invention.
The specific embodiment
Referring to Fig. 1, pipeline type vascular stent of the present invention, engrave by metal circular tube and to form, comprise a plurality of structures annular support body 1 identical, that arrange vertically, per two annular support body are one group, organize interior two annular support body and be mirror symmetry arrangement and connect, align between group and the group and arrange and pass through a plurality of by a plurality of " several " font connector 2
Shape connector 3 connects.
Each annular support body 1 among the present invention is all by a plurality of figure of three structural members 11 and a plurality of
Shape structural member 12 or a plurality of anti-figure of three structural member and a plurality of
Shape structural member waveform alternately polyphone forms, in two adjacent annular support body, and the anti-figure of three structural member in corresponding another annular support body of the figure of three structural member in the annular support body, in the annular support body
In corresponding another annular support body of shape structural member
The shape structural member.
Between the figure of three structural member and anti-figure of three structural member 11 in " several " font connector 2 among the present invention is connected and organizes in two annular support body, its junction point is at outstanding position, the centre of figure of three structural member and anti-figure of three structural member, and its middle part ledge is positioned at
Know
Between the shape structural member 12.In the present embodiment, " several " font connector that is connected between same group two annular support body is three, three " several " font connectors are along the circle spacing uniform distribution, and in entire bracket, " several " font connector that is connected in the two adjacent groups annular support body is staggered.
Among the present invention
Shape connector 3 be connected the group with the group between two adjacent annular support body in figure of three structural member and a side of anti-figure of three structural member 11, its junction point figure of three structural member and
The intersection of shape structural member and anti-figure of three structural member with
The intersection of shape structural member, its main part is positioned at two
With
Between the shape structural member 12.In the present embodiment, be connected group and organize between between the two adjacent annular support body
The shape connector is two, two
The shape connector, is connected between group and the group in entire bracket along the nearly uniform distribution of circumference
The shape connector is arranged twist.
In the annular support body among the present invention
With
The shape structural member has long and short two kinds of versions, and the length in same annular support body
Shape structural member 121 and short
Shape structural member 122 alternately occurs or is long
Shape structural member and weak point
The shape structural member alternately occurs, and the middle part ledge of " several " font connector is positioned at two weak points
With
Between the shape structural member.
Flexible intravascular stent of the present invention, with the component units figure of three structural member in the annular support body with
The shape structural member is designed to each 6 or 8, and controls the length of support by the number that changes annular support body, can keep adapting to the needs of different thicknesses blood vessel and different length pathological changes well under the moderate situation of metal surface coverage rate.Wherein figure of three structural member or anti-figure of three structural member can provide bigger radial support power,
The shape structural member is then narrower, and both are used the radial support power that can better regulate support." several " font connector and
The shape connector alternately is connected between the two adjacent annular support body, has avoided on the one hand the accumulation that each annular support body shortens in the axial direction on the entire bracket, make on the other hand " several " font or
The shape connector can open to both sides along with the expansion of support, and wherein the open degree of " several " font connector is greater than
The open degree of shape connector, " several " font and
Being used of shape connector can be adjusted the recruitment of stent length, to remedy the axial shortening of support annular support body part.Annular support body and " several " font and
Being used of shape connector can guarantee that support of the present invention one side expanded radially in expansion process is even and appropriate, has the axially almost nil technical characterstic of shortening of back that expands simultaneously again.
Opposite according to direction among the present invention annular support body, alternately the mode of alignment is arranged vertically, make the planform of every group of two adjacent annular support body about mirror symmetry, group with organize between the planform of two adjacent annular support body also be basically mirror symmetry (asymmetric be in two corresponding
One is long and the other is short for the shape structural member), significantly reduced the support each several part and in expansion process, counterrotating probability has axially taken place around support, can reduce damage to blood vessel wall.Connector between annular support body and the annular support body be shaped as " several " font or
Shape, the number of connector has only three or two between the adjacent annular support body, and two kinds of connectors are symmetry or nearly uniform distribution, makes support under the situation of not losing radial support power, and good axial compliance and vascular compliance can be provided.
Among the present invention above " several " font connector
The shape structural member is shorter than " several " connector below
The shape structural member, can make like this " several " font connector with
The bonded local metal of shape structural member covers evenly, can reduce the damage to blood vessel wall as far as possible; Same design also is present in
The lower part of shape structural member is considered
The existence of shape connector, specially
Shape structural member lower part is designed to level, to reduce the concentrations of localized metallic, guarantees plated uniformity, reduces the damage to blood vessel wall.
Though pipeline type vascular stent of the present invention is described with reference to current instantiation, but those skilled in the art should be realized that, above example only is to be used for illustrating the present invention, also can make the variation and the modification of various equivalences under the situation that does not break away from spirit of the present invention.Therefore, if in connotation scope of the present invention to the variation of above-mentioned example, modification all will drop in the scope of claims of the present invention.
Claims (5)
1. pipeline type vascular stent, engrave by metal circular tube and to form, described support comprises a plurality of structures annular support body identical, that arrange vertically, per two annular support body are one group, organize interior two annular support body and be mirror symmetry arrangement and connect, align between group and the group and arrange and pass through a plurality of by a plurality of " several " font connector
The shape connector connects; It is characterized in that: described annular support body is by a plurality of figure of three structural members and a plurality of
Shape structural member or a plurality of anti-figure of three structural member and a plurality of
Shape structural member waveform alternately polyphone forms, in two adjacent annular support body, and the anti-figure of three structural member in corresponding another annular support body of the figure of three structural member in the annular support body, in the annular support body
In corresponding another annular support body of shape structural member
The shape structural member.
2. pipeline type vascular stent as claimed in claim 1, it is characterized in that: between the figure of three structural member and anti-figure of three structural member in described " several " font connector is connected and organizes in two annular support body, its junction point is at outstanding position, the centre of figure of three structural member and anti-figure of three structural member, and the middle part ledge of " several " font connector is positioned at
With
Between the shape structural member.
3. pipeline type vascular stent as claimed in claim 1 is characterized in that: described
The shape connector be connected the group with the group between two adjacent annular support body in figure of three structural member and a side of anti-figure of three structural member, its junction point figure of three structural member and
The intersection of shape structural member and anti-figure of three structural member with
The intersection of shape structural member, its main part is positioned at
With
Between the shape structural member.
4. pipeline type vascular stent as claimed in claim 1, it is characterized in that: described " several " font connector that is connected between same group two annular support body is three, three " several " font connectors are along the circle spacing uniform distribution, described be connected group and organize between between the two adjacent annular support body
The shape connector is two, two
The shape connector is along the nearly uniform distribution of circumference, and in entire bracket, " several " font connector that is connected in the two adjacent groups annular support body is staggered, and is connected between group and the group
The shape connector is arranged twist.
5. pipeline type vascular stent as claimed in claim 1 is characterized in that: in the described annular support body
With
The shape structural member has long and short two kinds of versions, and the length in same annular support body
Shape structural member and weak point
The shape structural member alternately occurs or is long
Shape structural member and weak point
The shape structural member alternately occurs, and the middle part ledge of described " several " font connector is positioned at weak point
With
Between the shape structural member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510111306 CN1977777B (en) | 2005-12-08 | 2005-12-08 | Pipeline type vascular stent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510111306 CN1977777B (en) | 2005-12-08 | 2005-12-08 | Pipeline type vascular stent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1977777A CN1977777A (en) | 2007-06-13 |
| CN1977777B true CN1977777B (en) | 2011-05-25 |
Family
ID=38129205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510111306 Active CN1977777B (en) | 2005-12-08 | 2005-12-08 | Pipeline type vascular stent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1977777B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105496604B (en) * | 2016-01-22 | 2018-04-06 | 山东省千佛山医院 | Heart coronary artery support |
| CN107468388A (en) * | 2017-08-24 | 2017-12-15 | 中国人民解放军总医院 | A kind of variable post capsule alimentary canal expandable stent |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6059811A (en) * | 1994-03-17 | 2000-05-09 | Medinol Ltd. | Articulated stent |
| CN2430175Y (en) * | 2000-05-15 | 2001-05-16 | 臧式先 | Medical tubular rack |
| CN2453962Y (en) * | 2000-12-08 | 2001-10-17 | 杨大智 | Engraved sinusoidal-wave tube net type coronary-artery carriage |
| CN2523380Y (en) * | 2002-01-19 | 2002-12-04 | 杨大智 | Flexible engraved metal arteria coronaria enlarger |
| CN2555862Y (en) * | 2002-08-02 | 2003-06-18 | 微创医疗器械(上海)有限公司 | Intracranial artery support |
| CN2592193Y (en) * | 2003-01-06 | 2003-12-17 | 业聚医疗器械(深圳)有限公司 | Improved coronary artery saccule dilating scaffold |
| CN2617398Y (en) * | 2003-04-18 | 2004-05-26 | 微创医疗器械(上海)有限公司 | Vessel stand with local widening |
| EP1094764B1 (en) * | 1998-07-08 | 2004-09-22 | Boston Scientific Limited | An improved stent |
| CN2852988Y (en) * | 2005-01-23 | 2007-01-03 | 上海康德莱企业发展集团医疗器械有限公司 | Tube network type blood vessel support without axial shortened |
-
2005
- 2005-12-08 CN CN 200510111306 patent/CN1977777B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6059811A (en) * | 1994-03-17 | 2000-05-09 | Medinol Ltd. | Articulated stent |
| EP1094764B1 (en) * | 1998-07-08 | 2004-09-22 | Boston Scientific Limited | An improved stent |
| CN2430175Y (en) * | 2000-05-15 | 2001-05-16 | 臧式先 | Medical tubular rack |
| CN2453962Y (en) * | 2000-12-08 | 2001-10-17 | 杨大智 | Engraved sinusoidal-wave tube net type coronary-artery carriage |
| CN2523380Y (en) * | 2002-01-19 | 2002-12-04 | 杨大智 | Flexible engraved metal arteria coronaria enlarger |
| CN2555862Y (en) * | 2002-08-02 | 2003-06-18 | 微创医疗器械(上海)有限公司 | Intracranial artery support |
| CN2592193Y (en) * | 2003-01-06 | 2003-12-17 | 业聚医疗器械(深圳)有限公司 | Improved coronary artery saccule dilating scaffold |
| CN2617398Y (en) * | 2003-04-18 | 2004-05-26 | 微创医疗器械(上海)有限公司 | Vessel stand with local widening |
| CN2852988Y (en) * | 2005-01-23 | 2007-01-03 | 上海康德莱企业发展集团医疗器械有限公司 | Tube network type blood vessel support without axial shortened |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1977777A (en) | 2007-06-13 |
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