CN203988521U - A kind of asymmetric conical intravascular stent - Google Patents
A kind of asymmetric conical intravascular stent Download PDFInfo
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- CN203988521U CN203988521U CN201420345878.4U CN201420345878U CN203988521U CN 203988521 U CN203988521 U CN 203988521U CN 201420345878 U CN201420345878 U CN 201420345878U CN 203988521 U CN203988521 U CN 203988521U
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- intravascular stent
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- conical
- annular brace
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Abstract
The utility model discloses a kind of asymmetric conical intravascular stent, it is characterized in that: comprise several annular brace unit that connect successively and be connected to the linkage unit between adjacent annular support unit; The length of the described annular brace unit connecting successively reduces successively, makes whole intravascular stent be conical mechanism.As a kind of technical scheme of optimization, described annular brace unit comprises the supporter of the capable structure of some end to end U, between described adjacent annular support unit, between spaced supporter, connects by linkage unit; Described supporter axial length reduces successively, after strutting, can form taper shape, and diameter rate of change is between 1%～50%.Compliance when this utility model ensures that intravascular stent is implanted, and can solve the processing of circular cone position vascular dissection pathological changes, effectively prevent endovascular restenosis.There is good pliability, maintain the support strength of vascular patency, and can bear the fatigue load that blood flow causes.
Description
Technical field
This utility model belongs to medical instruments field, specifically, relates to a kind of asymmetric conical intravascular stent.
Background technology
Heart and cardiovascular disease have become the large killer that beats the world, have over halfly directly to be caused by heart and cardiovascular disease in the annual all dead people of the U.S..At home, along with the raising of living standard, the change of life style, cardiovascular disease incidence rate is more and more higher, and the coronary heart disease causing because cardiovascular is narrow has become and has jeopardized one of healthy and safe principal disease of human life.At present, the treatment of coronary heart disease is divided into Drug therapy, surgical operation and interventional therapy three major types.The Drug therapy cycle is long, it is slow to take effect, side effect is large, and patient easily produces the dependency to medicine; Surgical operation can produce permanent injury to patient; Interventional intravascular stent Therapeutic Method, because its wound is little, effective, becomes the narrow novel method of current treatment cardiovascular.
Intravascular stent refers on the basis being shaped at tube chamber balloon expandable, inserts inner support support stenosis occlusion section blood vessel to reach in pathological changes section, reduces blood vessel elasticity retraction and moulding again, keeps the unobstructed object of tube chamber blood flow.The form of existing intravascular stent is varied, mainly contains laser cut stent (patent of invention: 200910088181.7 from manufacture method; Patent of invention: 200910088181.1), from use material mainly contain cobalt-base alloys support (patent of invention: 200910088181.7; Patent of invention: 200910088181.1), also have bracket for eluting medicament (patent of invention: 200910088181.7; Patent of invention: 200910088181.1) etc.
All there are some problems in these supports at present: the support of application is stereotyped is clinically all cylindrical, but some position of blood vessel is not cylindrical, and near-end and distal vessels diameter differ greatly, and is conical.If adopt conventional stent at these positions, the radial expansion force that blood vessel bears is uneven distribution, and the small end of taper position blood vessel bears larger radial support power, easily makes the attenuation of blood vessel small end blood vessel wall, produces mechanical stretch, foreign body inflammatory reaction etc.And near-end just cannot be adherent good, can greatly increase thus the risk of the following thrombus in stents formation of patient and in-stent restenosis.Asymmetric conical intravascular stent just can be good at addressing the above problem, can adapt to the physiological structure of blood vessel itself, the art formula difficulty of conical vascular lesion is declined greatly, increase operability, reduce operating time, also reduce patient and intervention doctor's time of exposure.
Summary of the invention
The technical problems to be solved in the utility model is to overcome above-mentioned defect, a kind of asymmetric conical intravascular stent is provided, improve the physiological adaption of intravascular stent at conical vascular site, the radial expansion force that balanced blood vessel bears, effectively reduce the generation of restenosis, for the exploitation of asymmetric conical intravascular stent provides good platform, with meet clinical in needs to conical intravascular stent.
For addressing the above problem, the technical scheme that this utility model adopts is:
A kind of asymmetric conical intravascular stent, is characterized in that: comprise several annular brace unit that connect successively and be connected to the linkage unit between adjacent annular support unit; The length of the described annular brace unit connecting successively reduces successively, makes whole intravascular stent be conical mechanism.
As a kind of technical scheme of optimization, described annular brace unit comprises the supporter of the capable structure of some end to end U, between described adjacent annular support unit, between spaced supporter, connects by linkage unit; Described supporter axial length reduces successively, after strutting, can form taper shape, and diameter rate of change is between 1%～50%.
As a kind of technical scheme of optimization, described linkage unit comprises some connectors, and connector can adopt linear structure, or V-arrangement mechanism, or W shape mechanism, or S shape mechanism, or N shape structure.
As a kind of technical scheme of optimization, described annular brace unit includes the supporter of 5-12 U-shaped structure composition, and the number of described connector is 4-12.
Owing to having adopted technique scheme, compared with prior art, self-assembling formation taper shape after this utility model expansion, can effectively improve the physiological adaption of support at conical vascular site, the support force of equalizing prong, thereby ensure compliance when intravascular stent is implanted, and can solve the processing of circular cone position vascular dissection pathological changes, effectively prevent endovascular restenosis.There is good pliability, maintain the support strength of vascular patency, and can bear the fatigue load that blood flow causes.
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail simultaneously.
Brief description of the drawings
Fig. 1 is the flat deployable structure schematic diagram of a kind of embodiment of this utility model;
Fig. 2 is the near-end partial enlarged drawing of a kind of embodiment of this utility model.
Detailed description of the invention
Embodiment:
As shown in Figure 1 and Figure 2, a kind of asymmetric conical intravascular stent, comprises several annular brace unit 1 that connect successively and is connected to the linkage unit 2 between adjacent annular support unit.The length of the described annular brace unit 1 connecting successively reduces successively, be L1 > L2 > L3 > L4 > L5 > L6 > L7 > L8, make whole intravascular stent be conical mechanism.
In the present embodiment, described annular brace unit 1 comprises the supporter of the capable structure of some end to end U, between described adjacent annular support unit 1, between spaced supporter, connects by linkage unit.Described supporter axial length reduces successively, after strutting, can form taper shape, and diameter rate of change is between 1%～50%.
Described linkage unit 2 comprises some connectors, and connector can adopt linear structure, or V-arrangement mechanism, or W shape mechanism, or S shape mechanism, or N shape structure
Described annular brace unit 1 includes the supporter of 5-12 U-shaped structure composition, and the number of described connector is 4-12.
Described supporter is made up of one or more materials in rustless steel, cochrome, Nitinol, biodegradable polymers material, biodegradable metal, pure magnesium, magnesium alloy, pure iron or ferroalloy.
Size of the present utility model has no particular limits, and in the situation that not expanding, asymmetric conical intravascular stent length is about 5～30mm, and the diameter after expansion is about in the scope of 1.5～6.0mm comparatively desirable.The length of a supporter of asymmetric conical intravascular stent, is generally about 0.5～2.0mm, and the length of connector is about 0.1～2.0mm, and ideal length is 0.2～1.0mm.
Self-assembling formation taper shape after this utility model expansion, can effectively improve the physiological adaption of support at conical vascular site, the support force of equalizing prong, thereby ensure compliance when intravascular stent is implanted, and can solve the processing of circular cone position vascular dissection pathological changes, effectively prevent endovascular restenosis.There is good pliability, maintain the support strength of vascular patency, and can bear the fatigue load that blood flow causes.
This utility model is not limited to above-mentioned preferred implementation, and anyone should learn the structural change of making under enlightenment of the present utility model, every with the utlity model has identical or akin technical scheme, all belong to protection domain of the present utility model.
Claims (4)
1. an asymmetric conical intravascular stent, is characterized in that: comprise several annular brace unit that connect successively and be connected to the linkage unit between adjacent annular support unit; The length of the described annular brace unit connecting successively reduces successively, makes whole intravascular stent be conical mechanism.
2. asymmetric conical intravascular stent according to claim 1, it is characterized in that: described annular brace unit comprises the supporter of the capable structure of some end to end U, between described adjacent annular support unit, between spaced supporter, connect by linkage unit; Described supporter axial length reduces successively, after strutting, can form taper shape, and diameter rate of change is between 1%～50%.
3. asymmetric conical intravascular stent according to claim 2, is characterized in that: described linkage unit comprises some connectors, and connector can adopt linear structure, or V-arrangement mechanism, or W shape mechanism, or S shape mechanism, or N shape structure.
4. asymmetric conical intravascular stent according to claim 3, is characterized in that: described annular brace unit includes the supporter of 5-12 U-shaped structure composition, and the number of described connector is 4-12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420345878.4U CN203988521U (en) | 2014-06-24 | 2014-06-24 | A kind of asymmetric conical intravascular stent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420345878.4U CN203988521U (en) | 2014-06-24 | 2014-06-24 | A kind of asymmetric conical intravascular stent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203988521U true CN203988521U (en) | 2014-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201420345878.4U Expired - Fee Related CN203988521U (en) | 2014-06-24 | 2014-06-24 | A kind of asymmetric conical intravascular stent |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105726174A (en) * | 2016-04-27 | 2016-07-06 | 苏州天鸿盛捷医疗器械有限公司 | Intravascular stent and preparation method and application thereof |
| CN106137484A (en) * | 2016-08-01 | 2016-11-23 | 江苏大学 | A kind of self-expansion type conical blood vessel support |
| US10695201B2 (en) | 2016-04-27 | 2020-06-30 | Suzhou Venmed Technology Co., Ltd. | Intravascular stent, preparation method and use thereof |
| US11471309B2 (en) | 2016-04-27 | 2022-10-18 | Suzhou Venmed Technology Co., Ltd. | Intravascular stent, preparation method and use thereof |
-
2014
- 2014-06-24 CN CN201420345878.4U patent/CN203988521U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105726174A (en) * | 2016-04-27 | 2016-07-06 | 苏州天鸿盛捷医疗器械有限公司 | Intravascular stent and preparation method and application thereof |
| US10695201B2 (en) | 2016-04-27 | 2020-06-30 | Suzhou Venmed Technology Co., Ltd. | Intravascular stent, preparation method and use thereof |
| US11471309B2 (en) | 2016-04-27 | 2022-10-18 | Suzhou Venmed Technology Co., Ltd. | Intravascular stent, preparation method and use thereof |
| CN106137484A (en) * | 2016-08-01 | 2016-11-23 | 江苏大学 | A kind of self-expansion type conical blood vessel support |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20150624 |
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| EXPY | Termination of patent right or utility model |