CN203425071U - Blood vessel stent suitable for conical blood vessel - Google Patents
Blood vessel stent suitable for conical blood vessel Download PDFInfo
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- CN203425071U CN203425071U CN201320501380.8U CN201320501380U CN203425071U CN 203425071 U CN203425071 U CN 203425071U CN 201320501380 U CN201320501380 U CN 201320501380U CN 203425071 U CN203425071 U CN 203425071U
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- support ring
- intravascular stent
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- linkage unit
- blood vessel
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- 210000004204 blood vessel Anatomy 0.000 title claims abstract description 36
- 230000004323 axial length Effects 0.000 claims abstract description 5
- 210000003205 muscle Anatomy 0.000 claims description 33
- 238000000034 method Methods 0.000 claims description 12
- 102000029749 Microtubule Human genes 0.000 claims description 6
- 108091022875 Microtubule Proteins 0.000 claims description 6
- 210000004688 microtubule Anatomy 0.000 claims description 6
- 229910000861 Mg alloy Inorganic materials 0.000 claims description 3
- 238000010147 laser engraving Methods 0.000 claims description 3
- 230000003902 lesion Effects 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 230000002792 vascular Effects 0.000 abstract description 13
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 230000006378 damage Effects 0.000 description 5
- 208000037803 restenosis Diseases 0.000 description 5
- 230000001464 adherent effect Effects 0.000 description 4
- 208000029078 coronary artery disease Diseases 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000003292 diminished effect Effects 0.000 description 2
- 238000002651 drug therapy Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007943 implant Substances 0.000 description 2
- 230000000750 progressive effect Effects 0.000 description 2
- 238000002560 therapeutic procedure Methods 0.000 description 2
- 208000024172 Cardiovascular disease Diseases 0.000 description 1
- 208000031481 Pathologic Constriction Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 210000001715 carotid artery Anatomy 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000002526 effect on cardiovascular system Effects 0.000 description 1
- 210000001105 femoral artery Anatomy 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000013152 interventional procedure Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000006049 ring expansion reaction Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 208000037804 stenosis Diseases 0.000 description 1
- 230000036262 stenosis Effects 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
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Abstract
本实用新型提供了一种适用于锥形血管使用的血管支架，由若干组支撑环和连接在每相邻两组支撑环之间的连接单元组成，每一组的支撑环由若干形状相同的单元波组成，从血管支架左端的第一组支撑环开始，沿所述血管支架的轴向方向每相邻两组支撑环的波高h呈递减趋势排列。从血管支架左端的第一组支撑环开始，沿所述血管支架的轴向方向每相邻两组支撑环的筋宽L呈递增趋势排列。每相邻两组支撑环之间的连接单元的筋宽w保持不变，轴向长度r等于所连接的两个支撑环波高的平均值，支架在膨胀时不会产生瞬时哑铃状现象，膨胀后呈现渐细的锥形结构，可以更好地符合人体血管的匹配性，使血管支架与人体血管贴壁性能得到改善。
The utility model provides a vascular support suitable for conical blood vessels, which is composed of several sets of support rings and connecting units connected between each adjacent two sets of support rings, and each set of support rings is composed of several sets of support rings with the same shape. The unit wave is formed, starting from the first group of supporting rings at the left end of the vascular stent, and the wave height h of each adjacent two groups of supporting rings along the axial direction of the vascular stent is arranged in a decreasing trend. Starting from the first set of support rings at the left end of the vascular stent, the rib width L of each adjacent two sets of support rings along the axial direction of the vascular stent is arranged in an increasing trend. The rib width w of the connection unit between each adjacent two sets of support rings remains unchanged, and the axial length r is equal to the average wave height of the two connected support rings. When the stent expands, it will not produce an instantaneous dumbbell-like phenomenon. Finally, it presents a tapered tapered structure, which can better conform to the matching of human blood vessels, and improve the adhesion performance of vascular stents and human blood vessels.
Description
Technical field
This utility model relates to a kind of balloon expandable formula intravascular stent of puncture shaping surgery treatment angiemphraxis, belongs to manufacture technology field of medical appliance.
Background technology
Along with the raising of living standard, the change of life style, cardiovascular disease incidence rate is also more and more higher, and become and jeopardized one of healthy and safe principal disease of human life, be wherein the narrow coronary heart disease causing of cardiovascular greatly.The treatment of coronary heart disease is at present divided into Drug therapy, surgical operation and interventional therapy three major types.The method that adopts Drug therapy often the time cycle long, take effect slow, side effect is large, easily produces the dependency to medicine; Surgical operation produces permanent injury to patient; And interventional therapy method based on medical vascular stent is due to its Wicresoft's wound and high efficiency, become a kind of novel method of the coronary heart disease that current treatment angiostenosis causes.
Support interventional procedure is that the support that pressure is held on sacculus is transported to angiostenosis place, and support is expanded the blood vessel of stenosis under the expansion of sacculus, thereby plays support blood vessels, the unimpeded effect of recovery blood flow.Intravascular stent in the market has various structures form, and the common feature of this quasi-tradition intravascular stent is: 1. the shape after intravascular stent expansion is all cylindric; 2. the wide assurance of the muscle of intravascular stent support ring is constant; 3. the wave height of intravascular stent support ring remains unchanged.But because the internal diameter of human vas is not changeless, even in some place, alter a great deal, such as carotid artery, femoral artery, left anterior descending branch coronarius etc., along the axial direction of blood vessel, be convergent, it is tapered shape, the traditional not straight intravascular stent of circle of reducing of many employings goes to expand taper angiostenosis position clinically, except making the adherent performance of intravascular stent falls flat, far-end that also can overdistension taper blood vessel, cause the damage of blood vessel wall, thereby cause the generation of vascular restenosis.In addition, support at the expansion initial stage because end force environment is severe compared with mid portion, and prior to mid portion generation plastic deformation, outwards expand in advance, make support occur dumbbell shaped structure in the moment of expanding, the process of this moment support two ends elder generation perk, also can cause to the blood vessel wall near bracket end scraping damage, causes support to implant the hidden danger of rear vascular restenosis.In order to address the above problem, to make support carry out flexibility with taper blood vessel better and mate, and further reduce the probability that support is implanted rear vascular restenosis, a kind of technical solution that is applicable to the intravascular stent of taper blood vessel use of special proposition.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of intravascular stent that is applicable to taper blood vessel, be applicable to the occasion that human vas diameter changes along blood vessel axial direction, the adherent performance of intravascular stent and human vas is improved, reduce intravascular stent damage to blood vessel wall in implantation process, improve therapeutic effect.
The technical solution of the utility model is: a kind of intravascular stent that is applicable to taper blood vessel, by some groups of support rings and the linkage unit that is connected between every two adjacent groups support ring, formed, it is characterized in that, the support ring of described each group is by the identical unit wave component of some shapes, from first group of support ring of described intravascular stent left end, along the wave height of the every two adjacent groups support ring of axial direction of described intravascular stent
hthe trend that tapers off is arranged, and this structure makes the expansion girth of support ring be diminished to right-hand member is progressive by left end, to adapt to taper vessel axis to gradually thin construction features.
Preferably, described intravascular stent is from first group of support ring of left end, along the wave height of each group support ring of the axial direction of described intravascular stent
hbe the 1.20-1.50 of one group support ring wave height adjacent with its right-hand member doubly.
In such scheme, described linkage unit be shaped as any one shape in linear, S shape, V-arrangement, M type.
In such scheme, from first group of support ring of described intravascular stent left end, wide along the muscle of the every two adjacent groups support ring of axial direction of described intravascular stent
lbe and increase progressively trend arrangement, because muscle is wide, become positive correlation with the pressure of expandable stent,, in the situation that expansion diameter is certain, the expansion pressure of the wide larger needs of muscle is just larger.Conversely, the in the situation that of given identical expansion pressure, the diameter that the corrugated gasket expansion that the wide little corrugated gasket of muscle is more roomy than muscle obtains will be large, so just both be conducive to the formation of the rear conical in shape of support expansion, also be conducive to overcome support right-hand member and come prior to middle part expansion, prevent the appearance of support right-hand member dumbbell phenomenon.）。
Preferably, described intravascular stent is from first group of support ring of left end, wide along the muscle of each group support ring of the axial direction of described intravascular stent
lit is one group 0.60-0.90 that support ring muscle wide adjacent with its right-hand member times.
In such scheme, the muscle of the linkage unit between every two adjacent groups support ring is wide
wremain unchanged, axial length
rthe meansigma methods that equals connected two support ring wave height, this structure is conducive to improve the axial compliance of support, reaches diseased region smoothly by curved blood vessel.This is that compliance due to support depends primarily on linkage unit, and the muscle of linkage unit wide be the important parameter that affects compliance, normally the wide less compliance of muscle can be better, so that the constant smaller value of the wide maintenance of linkage unit muscle is conducive to improve the axial compliance of support, this utility model is in order to keep the structural coordination of compliance and the support integral body of support, and the muscle of the linkage unit between every two adjacent groups support ring is wide
wremain unchanged, axial length
requal the meansigma methods of connected two support ring wave height.
Preferably, described intravascular stent has 7 groups of support rings, be respectively the first support ring, the second support ring, three-support ring, the 4th support ring, the 5th support ring, the 6th support ring and the 7th support ring, every group of support ring all has 8 identical unit ripples of shape to form, the right of described the first support ring connects described the second support ring by first group of linkage unit, described the second support ring connects described three-support ring by second group of linkage unit, described three-support ring connects described the 4th linkage unit by the 3rd group of linkage unit, described the 4th support ring connects described the 5th support ring by the 4th group of linkage unit, described the 5th support ring connects described the 6th support ring by the 5th group of linkage unit, described the 6th support ring connects described the 7th support ring by the 6th group of linkage unit, above-mentioned each group linkage unit is linear linkage unit.
In such scheme, described intravascular stent is formed through laser engraving by medical 316L stainless steel metal micro-tubes or L605 cochrome or marmem microtubule or biodegradable magnesium alloy microtubule.
In such scheme, the number by increase and decrease support ring and linkage unit reaches the length that increases or reduce support to adapt to the length of blood vessel different lesions.
The beneficial effects of the utility model: it is all cylindric that intravascular stent of the present utility model is held state in naturalness and pressure, is convenient to reach diseased region by curved blood vessel, has good penetrance and compliance; Intravascular stent presents the architectural feature of taper after expanding, can meet better the objective reality that human vas changes along its length, improve the matching of intravascular stent and human vas, thereby the adherent performance of intravascular stent and blood vessel is improved, reduce to greatest extent traditional intravascular stent because inconsistent support-arteriectasia is than the vascular damaged causing, reduce support and implant rear vascular restenosis odds; Can effectively weaken or remove the instantaneous dumbbell shaped phenomenon that support occurs in expansion process simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation after this utility model intravascular stent launches vertically.
Fig. 2 is S type linkage unit structural representation.
Fig. 3 is V-type linkage unit structural representation.
Fig. 4 is M type linkage unit structural representation.
In figure, 11. first support rings, 12 second support rings, 13 three-support rings, 14 the 4th support rings, 15 the 5th support rings, 16 the 6th support rings, 17 the 7th support rings; 21 first groups of linkage units, 22 second groups of linkage units, 23 the 3rd groups of linkage units, 24 the 4th groups of linkage units, 25 the 5th groups of linkage units, 26 the 6th groups of linkage units; 30 unit ripples; 31M type linkage unit; 41S type linkage unit; 51V type linkage unit.
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is further described.
As shown in Figure 1, a kind of intravascular stent that is applicable to taper blood vessel of the present utility model is balloon expandable stent, by medical 316L stainless steel metal micro-tubes or L605 cochrome or marmem microtubule or biodegradable magnesium alloy microtubule, through laser engraving, formed, kept the globality of support.This support is comprised of linkage unit and support ring, the same with most of intravascular stents, and the linkage unit of described support and the cross section of support ring are square-section, and the cross section muscle of square-section is thick is identical.In the present embodiment, described intravascular stent is formed by connecting by six groups of linkage units by 7 groups of support rings, and (described six groups of linkage units are preferably linear linkage unit, also can be the linkage unit of M shape 31 in V-arrangement 51, Fig. 4 in S shape 41, Fig. 3 in Fig. 2), every group of support ring consists of 8 identical unit ripples 30 of shape, between every two adjacent groups support ring, by 4 identical linkage units edges, is circumferentially evenly arranged.
Wherein, 7 groups of support rings are respectively the first support ring 11, the second support ring 12, three-support ring 13, the 4th support ring 14, the 5th support ring 15, the 6th support ring 16 and the 7th support ring 17, the right of described the first support ring 11 connects described the second support ring 12 by first group of linkage unit 21, described the second support ring 12 connects described three-support ring 13 by second group of linkage unit 22, described three-support ring 13 connects described the 4th linkage unit 14 by the 3rd group of linkage unit 23, described the 4th support ring 14 connects described the 5th support ring 15 by the 4th group of linkage unit 24, described the 5th support ring 15 connects described the 6th support ring 16 by the 5th group of linkage unit 25, the described the 6th supports 16 rings connects described the 7th support ring 17 by the 6th group of linkage unit 26., support becomes 1.20-1.50 times that structural design refers to that the wave height of the first support ring is the wave height of the second support ring, the wave height of the second support ring be three-support ring wave height 1.20-1.50 doubly, the wave height of three-support ring be the 4th support ring wave height 1.20-1.50 doubly, the wave height of the 4th support ring be the 5th support ring wave height 1.20-1.50 doubly, the wave height of the 5th support ring be the 6th support ring wave height 1.20-1.50 doubly, the wave height of the 6th support ring be the 7th support ring wave height 1.20-1.50 doubly, making like this support ring expansion launch girth is diminished to far-end is progressive by near-end, to adapt to taper vessel axis to gradually thin construction features.Bracket leg pushing out ring become the wide design of muscle refer to the first support ring muscle wide into the wide 0.60-0.90 of the second support ring muscle doubly, the second support ring muscle is wide is the wide 0.60-0.90 of three-support ring muscle times, three-support ring muscle is wide is the wide 0.60-0.90 of the 4th support ring muscle times, the 4th support ring muscle is wide is the wide 0.60-0.90 of the 5th support ring muscle times, the 5th support ring muscle is wide is the wide 0.60-0.90 of the 6th support ring muscle times, the 6th support ring muscle is wide is the wide 0.60-0.90 of the 7th support ring muscle times, with the instantaneous dumbbell shaped phenomenon of preventing support to occur in expansion process.Wide the remaining unchanged of muscle of the linkage unit between adjacent two support rings, axial length equals the meansigma methods of connected two support ring wave height, is conducive to improve the axial compliance of support, reaches diseased region smoothly by curved blood vessel.
In practical application, the wide change of the muscle of support ring can be by adopting direct design Trapezoidal to reach or adopting change cutting surplus to reach; Number by increase and decrease support ring and linkage unit reaches the length that increases or reduce support to adapt to different lesions length.The technical scheme that this utility model provides, object is in order to change the instantaneous expansion behavior of support, and the intravascular stent after can making to expand carries out flexibility with taper blood vessel better and mates, consequently when expanding, can weaken or remove the instantaneous dumbbell shaped phenomenon that support occurs in expansion process, expand and finish the conical in shape that after-poppet integral body presents convergent, the adherent performance having had, reduces the damage of even having eliminated blood vessel wall, has reduced the probability of vascular restenosis after support is implanted.
Claims (9)
1. an intravascular stent that is applicable to taper blood vessel, by some groups of support rings and the linkage unit that is connected between every two adjacent groups support ring, formed, it is characterized in that, the support ring of described each group is by the identical unit wave component of some shapes, from first group of support ring of described intravascular stent left end, along the wave height h trend that tapers off of the every two adjacent groups support ring of axial direction of described intravascular stent, arrange.
2. a kind of intravascular stent that is applicable to taper blood vessel according to claim 1, it is characterized in that, described intravascular stent from first group of support ring of left end, along the wave height h of each group support ring of the axial direction of described intravascular stent be one group support ring wave height adjacent with its right-hand member 1.20-1.50 doubly.
3. a kind of intravascular stent that is applicable to taper blood vessel according to claim 1, is characterized in that, described linkage unit be shaped as any one shape in linear, S shape, V-arrangement, M type.
4. a kind of intravascular stent that is applicable to taper blood vessel according to claim 1, it is characterized in that, from first group of support ring of described intravascular stent left end, along the wide L of muscle of the every two adjacent groups support ring of axial direction of described intravascular stent, be and increase progressively trend and arrange.
5. a kind of intravascular stent that is applicable to taper blood vessel according to claim 4, it is characterized in that, described intravascular stent from first group of support ring of left end, along the wide L of muscle of each group support ring of the axial direction of described intravascular stent be one group 0.60-0.90 that support ring muscle wide adjacent with its right-hand member doubly.
6. a kind of intravascular stent that is applicable to taper blood vessel according to claim 4, is characterized in that, the wide w of muscle of the linkage unit between every two adjacent groups support ring remains unchanged, and axial length r equals the meansigma methods of connected two support ring wave height.
7. according to claim 2, 5, or any one described in 6 is applicable to the intravascular stent of taper blood vessel, it is characterized in that, described intravascular stent has 7 groups of support rings, be respectively the first support ring (11), the second support ring (12), three-support ring (13), the 4th support ring (14), the 5th support ring (15), the 6th support ring (16) and the 7th support ring (17), every group of support ring all has 8 identical unit ripples of shape to form, the right of described the first support ring (11) connects described the second support ring (12) by first group of linkage unit (21), described the second support ring (12) connects described three-support ring (13) by second group of linkage unit (22), described three-support ring (13) connects described the 4th linkage unit (14) by the 3rd group of linkage unit (23), described the 4th support ring (14) connects described the 5th support ring (15) by the 4th group of linkage unit (24), described the 5th support ring (15) connects described the 6th support ring (16) by the 5th group of linkage unit (25), described the 6th support ring (16) connects described the 7th support ring (17) by the 6th group of linkage unit (26), above-mentioned each group linkage unit is linear linkage unit.
8. a kind of intravascular stent that is applicable to taper blood vessel according to claim 1, it is characterized in that, described intravascular stent is formed through laser engraving by medical 316L stainless steel metal micro-tubes or L605 cochrome or marmem microtubule or biodegradable magnesium alloy microtubule.
9. a kind of intravascular stent that is applicable to taper blood vessel according to claim 1, is characterized in that, the number by increase and decrease support ring and linkage unit reaches the length that increases or reduce support to adapt to the length of blood vessel different lesions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320501380.8U CN203425071U (en) | 2013-08-16 | 2013-08-16 | Blood vessel stent suitable for conical blood vessel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320501380.8U CN203425071U (en) | 2013-08-16 | 2013-08-16 | Blood vessel stent suitable for conical blood vessel |
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| CN203425071U true CN203425071U (en) | 2014-02-12 |
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| CN201320501380.8U Expired - Fee Related CN203425071U (en) | 2013-08-16 | 2013-08-16 | Blood vessel stent suitable for conical blood vessel |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103550017A (en) * | 2013-08-16 | 2014-02-05 | 江苏大学 | Intravascular stent applicable to conical blood vessel |
| CN106236339A (en) * | 2016-07-22 | 2016-12-21 | 江苏大学 | A kind of it is applicable to the conical blood vessel support that bifurcated vessels master props up |
| CN108578025A (en) * | 2018-04-20 | 2018-09-28 | 江苏大学 | A kind of balloon-expandable intravascular stent for taking into account compliance and supportive |
| CN109431664A (en) * | 2018-09-19 | 2019-03-08 | 江苏大学 | A kind of intravascular stent of asymmetric |
-
2013
- 2013-08-16 CN CN201320501380.8U patent/CN203425071U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103550017A (en) * | 2013-08-16 | 2014-02-05 | 江苏大学 | Intravascular stent applicable to conical blood vessel |
| CN103550017B (en) * | 2013-08-16 | 2015-12-09 | 江苏大学 | A kind of intravascular stent being applicable to conical blood vessel |
| CN106236339A (en) * | 2016-07-22 | 2016-12-21 | 江苏大学 | A kind of it is applicable to the conical blood vessel support that bifurcated vessels master props up |
| CN106236339B (en) * | 2016-07-22 | 2018-06-01 | 江苏大学 | A kind of conical blood vessel stent suitable for the main branch of bifurcated vessels |
| CN108578025A (en) * | 2018-04-20 | 2018-09-28 | 江苏大学 | A kind of balloon-expandable intravascular stent for taking into account compliance and supportive |
| CN109431664A (en) * | 2018-09-19 | 2019-03-08 | 江苏大学 | A kind of intravascular stent of asymmetric |
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|---|---|---|---|
| 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: 20140212 Termination date: 20140816 |
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| EXPY | Termination of patent right or utility model |