CN105769400A - Vascular stent - Google Patents
Vascular stent Download PDFInfo
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- CN105769400A CN105769400A CN201410815316.6A CN201410815316A CN105769400A CN 105769400 A CN105769400 A CN 105769400A CN 201410815316 A CN201410815316 A CN 201410815316A CN 105769400 A CN105769400 A CN 105769400A
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Abstract
The invention relates to a medical apparatus, and provides a vascular stent. The vascular stent comprises a plurality of stent units, wherein each of the stent units is of an annular structure; the crest of the previous stent unit corresponds to the trough of the later stent unit and the trough of the previous stent unit corresponds to the crest of the later unit; joints are kept between the adjacent two stent units; the vascular stent is provided with two ends; and one or two joints are kept between each of the various stent units between the two ends and the adjacent stent unit, and the numbers of the joints between at least two stent units between the two ends are mutually different. According to the vascular stent disclosed by the invention, since one or two joints are kept between the adjacent stent units and the stent units are inserted and distributed in the two connecting modes, a phenomenon of 'fish mouth', which is caused when the vascular stent is bent sharply, can be effectively reduced, and meanwhile, the passing performance of the vascular stent to complex lesions is also guaranteed; and moreover, since the stent units are wound in a sine wave mode, the vascular stent is relatively good in radial support force.
Description
Technical field
The present invention relates to medical apparatus and instruments, particularly relate to a kind of intravascular stent.
Background technology
Coronary atherosclerotic heart disease is coronary artery generation atherosclerotic lesion and causes lumen of vessels stenosis or occlusion, causes myocardial ischemia, anoxia or heart disease that is downright bad and that cause, is commonly referred to as " coronary heart disease ".At present, owing to the restenosis rate in traditional Drug therapy and simple balloon expandable later stage is high, the mode that main clinically or employing adds stenter to implant based on percutaneous tranluminal coronary angioplasty is treated, and it has wound height little, predictable, patient recovers soon, operation safety high.Mainly having based on 316 medical stainless steels (316L), cochrome, titanium alloy etc. for the support of this type of disease that good biological is functional and the bio-medical metal of excellent processability, these metals have good cell compatibility and the mechanical property similar to blood vessel.On the other hand, support is placed in the middle of blood vessel, it must have the tubular structure corresponding with blood vessel, and for the consideration suppressing thrombosis, the spraying aspect such as medicine, support radial-axial performance, support is typically designed as network structure, reduce the metal coverage rate of blood vessel, it is ensured that good radial direction support force and expansion uniformity.
At present coronary artery bracket on the market, the main distinction is on the connection unit of carrier unit, and owing to unit arrangement form is fixed, the compliance of support and mechanical property also mismatch, and are all respectively arranged with biased.Such as single helical structure can improve the compliance that support is overall, that improves support passes through performance, but the radial performance of support will be affected, it is likely to when intravascular stent produces aggressive bend produce " fish mouth " phenomenon (when bending when intravascular stent, impact due to supporting structure, bigger breach is produced between support adjacent two stands unit, if shape fish mouth), or between adjacent stent unit, have employed the structure of multiple connection unit, it can obtain axially reasonable stability, but radially support, submissive performance but can be affected for they.
Summary of the invention
It is an object of the invention to provide a kind of intravascular stent, it is intended to easily produce bigger " fish mouth " phenomenon for solving existing intravascular stent and pass through the problem that performance is not good.
For solving above-mentioned technical problem, a kind of intravascular stent of offer is provided, including the some carrier units being in axial direction sequentially connected with, each described carrier unit is and circumferentially surrounds, in corrugated mode, the circulus formed successively, and carrier unit described in adjacent two staggers setting, the trough of carrier unit described in one and crest after the crest of previous described carrier unit and trough are corresponding respectively, between carrier unit, there is junction described in adjacent two, described intravascular stent has both ends, each described carrier unit between both ends with and its adjacent described carrier unit between the quantity either-or between 1 and 2 of described junction and at least two between both ends described in the quantity of described junction between carrier unit different from each other.
Further, in axial direction between two described carrier units at both ends place and adjacent described carrier unit, it is respectively provided with two junctions.
Further, there are between two adjacent described carrier units two described connections, and circumferentially interval, direction, two described junctions is arranged.
Specifically, the crest of trough and carrier unit described in rear that each described junction is previous described carrier unit is connected formation.
Specifically, all H-shaped structure in each described junction of carrier unit described in adjacent two.
Specifically, described intravascular stent includes the some carriage assemblys being sequentially connected with in the axial direction, each described carriage assembly includes four the described carrier units being sequentially connected with, four described carrier unit respectively the first carrier units, second carrier unit, 3rd carrier unit and the 4th carrier unit, described first carrier unit, described second carrier unit, described 3rd carrier unit and described 4th carrier unit are in axial direction sequentially connected with, and described first carrier unit of carriage assembly has described junction described in described 4th carrier unit and rear of previous described carriage assembly.
Further, there are between described first carrier unit and described second carrier unit two described junctions, there is between described second carrier unit and described 3rd carrier unit a described junction, between described 3rd carrier unit and described 4th carrier unit, there are two described junctions.
Specifically, described intravascular stent is respectively positioned on same straight line the wherein wherein junction described in of junction, described second carrier unit and the described junction of described 3rd carrier unit, described 3rd carrier unit and described 4th carrier unit described in of the first carrier unit described in each described carriage assembly and described second carrier unit after launching vertically.
Specifically, the first carrier unit described in each described carriage assembly and two described junctions of described second carrier unit and two described junctions of described 3rd carrier unit and described 4th carrier unit are symmetrically distributed in the both sides of described second carrier unit and the described junction of described 3rd carrier unit.
Specifically, there are between described first carrier unit and described second carrier unit two described junctions, there is between described second carrier unit and described 3rd carrier unit a described junction, between described 3rd carrier unit and described 4th carrier unit, there is a described junction.
The present invention has following technique effect:
In the intravascular stent of the present invention, it includes the some carrier units being sequentially connected with in the axial direction, each carrier unit all along corrugated mode circumferentially around formed circulus, so that intravascular stent produces radially support force, between adjacent two stands unit, there is one or two junction simultaneously, namely two junctions can be had in intravascular stent between adjacent two stands unit to connect, or adopting has a junction to be attached, the structure of the structure of two junctions and a junction is distributed in the way of interspersed, thus forming a helical structure and form arrangement that two helical structures intert, this helical structure can effectively reduce " fish mouth " phenomenon that intravascular stent produces when there is aggressive bend, can also ensure that complex lesions is passed through performance by intravascular stent simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of the intravascular stent of the embodiment of the present invention；
Fig. 2 is the axially expanded structural representation of the embodiment one of the intravascular stent of Fig. 1；
Fig. 3 is the axially expanded structural representation of the embodiment two of the intravascular stent of Fig. 1；
Fig. 4 is the axially expanded structural representation of the embodiment three of the intravascular stent of Fig. 1.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the present invention, is not intended to limit the present invention.
nullReferring to Fig. 1，Embodiments provide a kind of intravascular stent 1，Entirety is in tubular construction，It is mainly used in human vas，Play the effect of support blood vessels，So that intravascular flow is unobstructed，It includes the some carrier units 111 being sequentially connected with vertically，Each carrier unit 111 bearing of trend vertically is the length direction of intravascular stent 1，Each carrier unit 111 is and circumferentially surrounds, in corrugated mode, the circulus formed successively，Waveform is preferably sinusoidal wave structure，Carrier unit 111 is open loop structure，Namely in carrier unit 111, each is filled with ring plate，And the area of ring plate should be greater than the plaque area that Ink vessel transfusing produces because of pathological changes，Carrier unit 111 mainly adopts cochrome and titanium alloy etc. to make，Should stagger setting for adjacent two carrier units 111，And the trough of a carrier unit 111 after the crest correspondence of previous carrier unit 111，This is the separate location of two stands unit 111；The crest of a carrier unit 111 after the trough correspondence of previous carrier unit 111, this is the close position of two stands unit 111, further, intravascular stent 1 has two ends, it is respectively provided with junction 12 between each carrier unit 111 and adjacent stent unit 111 between two ends, and the one of which that the quantity of junction 12 is 1 and 2, so that two carrier units 111 form a helical structure or two helical structures, (this helical structure is generally with a wherein junction 12 for starting point, by the wave of the wave of previous carrier unit 111 carrier unit 111 backward around extending, and then terminate in another junction 12, overall structure is similar to the helical form around formation of compression spring), so that whole intravascular stent 1 has multiple helical structure.nullIn the present embodiment，Have at least the quantity of the junction 12 between two carrier units 111 inconsistent between both ends，There are between each carrier unit 111 and the carrier unit 111 being adjacent one or two junctions 12，But should not be a junction 12 between adjacent stent unit 111 centrally located in an intravascular stent 1，Or it is two junctions 12，Namely in each intravascular stent 1, between adjacent stent unit 111, should have two junctions 12 of many groups and one junction 12 of many groups，And the interspersed distribution of version of this two junctions 12 and a junction 12，Single helical structure and two interspersed distributions of helical structures，Such that it is able to be effectively ensured the axial mechanical property of intravascular stent 1，The distributed architecture of this junction 12 can also be prevented effectively from " fish mouth " phenomenon that open loop structure easily produces when intravascular stent 1 aggressive bend simultaneously，But owing to only existing at most two junctions 12 between adjacent two stands unit 111，It it is also open loop structure，Intravascular stent 1 also has good submissive performance，Facilitate intravascular stent 1 bending when application，Ensure that intravascular stent 1 passes through performance when complex lesions，For this structural vessel support 1, also there is good axial retraction performance，Again because each carrier unit 111 is circumferentially surround, with sinus wave patters, the circulus formed successively，So that intravascular stent 1 also has good radial performance.
Further, along being respectively provided with two junctions 12 between two carrier units 111 and the adjacent stent unit 111 of two ends of the axial direction of intravascular stent 1.In the present embodiment, intravascular stent 1 head end intravascular stent 1 with and its adjacent intravascular stent 1 between there are two junctions 12, simultaneously the intravascular stent 1 of end with and its adjacent intravascular stent 1 between also there are two junctions 12, this can ensure the intravascular stent 1 axial property two ends, make complex lesions when intravasation support 1 and traverse intravascular stent 1, intravascular stent 1 has good stability in the circumferential, is further ensured that it passes through performance.nullAnd when there is two junctions 12 between two adjacent carrier units 111，This in axial direction interval, two junctions 12 is arranged，Namely two junctions 12 can not be separated by nearer，Make two carrier units 111 more balanced everywhere when axially connecting，When intravascular stent 1 is bent，The carrier unit 111 reducing crooked position produces the probability of " fish mouth " phenomenon，These two junctions 12 general are about intravascular stent 1 axisymmetrical in axial direction，The straight line that connects between the two is the diameter of corresponding carrier unit 111，It is typically located in each junction 12 between the two stands unit 111 that the carrier unit 111 of middle is adjacent with both sides not on the same line，Namely all stagger setting in each junction 12 that centrally located same carrier unit 111 has，It is further ensured that the axial property of intravascular stent 1，Be conducive to intravascular stent 1 both ends in needs process of expansion can be fixed on blood vessel，Prevent intravascular stent 1 from displacement occurring.
Specifically, between adjacent stent unit 111, the crest of trough and a rear carrier unit 111 that each junction 12 is previous carrier unit 111 is connected formation, namely at two stands unit 111 near formation junction, position 12, it is primarily to the formation facilitating attachment structure, attachment structure is fairly simple, it is possible to be effectively ensured intravascular stent 1 contracting property in the axial direction.In above-mentioned junction 12, all H-shaped structure under the cooperation of two adjacent carrier units 111, form the version of rib strip shaped, and the circumferential direction that length direction is intravascular stent 1 of this connection rib, connect the width width slightly larger than each carrier unit 111 of rib, it is possible to be further ensured that the axial retraction performance of intravascular stent 1.
nullReferring to Fig. 1-Fig. 4，Intravascular stent 1 includes some carriage assemblys 11，Each carriage assembly 11 is in axial direction in turn connected to form the length of intravascular stent 1，Each carriage assembly 11 is all included to four carrier units 111 being sequentially connected with，Also there is between adjacent two stands assembly 11 adjacent two carrier unit 111，Also entirety it is connected as between these two carrier units 111，This intravascular stent 1 is and is in axial direction in turn connected to form by multiple carrier units 111，Four carrier units 111 in each carriage assembly 11 are set to the first carrier unit 111a vertically、Second carrier unit 111b、3rd carrier unit 111c and the 4th carrier unit 111d，And along the first carrier unit 111a、Second carrier unit 111b、3rd carrier unit 111c and the 4th carrier unit 111d is sequentially connected with，4th carrier unit 111d of previous carriage assembly 11 has junction 12 with the first carrier unit 111a of a rear carriage assembly 11 simultaneously，It is illustrated below in conjunction with three specific embodiments.
Embodiment one
nullReferring to Fig. 2，In the present embodiment，Intravascular stent 1 is open loop structure，Including the many groups of carriage assemblys being sequentially connected with vertically 11，Thus forming the overall length of intravascular stent 1，Each carriage assembly 11 includes the first carrier unit 111a、Second carrier unit 111b、3rd carrier unit 111c and the 4th carrier unit 111d，Thus forming the whole supporting construction of intravascular stent 1，First carrier unit 111a、Second carrier unit 111b、3rd carrier unit 111c and the 4th carrier unit 111d is all with the sinusoidal wave radially surrounding formation circulus of form，Between first carrier unit 111a and the second carrier unit 111b, there are two junctions 12 simultaneously，Between second carrier unit 111b and the three carrier unit 111c, there is a junction 12，Between 3rd carrier unit 111c and the four carrier unit 111d, there are two junctions 12，And between the 4th carrier unit 111d and the first carrier unit 111a of a rear carriage assembly 11 of usually this carriage assembly 11, there is a junction 12，And each junction 12 is all H-shaped，Entirety to this intravascular stent 1 is two junctions 12、One junction 12、Two junctions 12、One junction 12 ... mode circulate，The i.e. mode axial circulation distribution of 2121，Double; two single connection places 12 are alternately distributed，Simultaneously after intravascular stent 1 in axial direction launches，In each carriage assembly 11，A wherein junction 12 of the first carrier unit 111a and the second carrier unit 111b、The junction 12 of the second carrier unit 111b and the three carrier unit 111c、A wherein junction 12 of the 3rd carrier unit 111c and the four carrier unit 111d is respectively positioned on same straight line，For the first carrier unit 111a、Second carrier unit 111b、The phase contrast of the junction 12 of the 3rd carrier unit 111c and the 4th its both sides of carrier unit 111d is 25-45 °.And it is each formed with a helical structure in each carriage assembly 11, one of them junction 12 between first carrier unit 111a and the second carrier unit 111b is as the starting point of this helical structure, and one of them junction 12 between the 3rd carrier unit 111c and the four carrier unit 111d is as the terminal of this helical structure, cooperatively formed another helical structure between two adjacent groups carriage assembly 11 simultaneously.This distribution mode by each junction 12, " fish mouth " phenomenon when intravascular stent 1 bends can be effectively reduced, intravascular stent 1 is made to have good compliance and pass through performance, suitable in complex lesions, the same time also has good spreading performance, radially support performance and expands uniform performance.
Embodiment two
nullReferring to Fig. 3，In the present embodiment，Intravascular stent 1 is open loop structure，Including the many groups of carriage assemblys being sequentially connected with vertically 11，Thus forming the overall length of intravascular stent 1，Each carriage assembly 11 includes the first carrier unit 111a、Second carrier unit 111b、3rd carrier unit 111c and the 4th carrier unit 111d，Thus forming the whole supporting construction of intravascular stent 1，First carrier unit 111a、Second carrier unit 111b、3rd carrier unit 111c and the 4th carrier unit 111d is all with the sinusoidal wave radially surrounding formation circulus of form，Between first carrier unit 111a and the second carrier unit 111b, there are two junctions 12 simultaneously，Between second carrier unit 111b and the three carrier unit 111c, there is a junction 12，Between 3rd carrier unit 111c and the four carrier unit 111d, there are two junctions 12，And between the 4th carrier unit 111d and the first carrier unit 111a of a rear carriage assembly 11 of usually this carriage assembly 11, there is a junction 12，And each junction 12 is all H-shaped，Entirety to this intravascular stent 1 is two junctions 12、One junction 12、Two junctions 12、One junction 12 ... mode circulate，The i.e. mode axial circulation distribution of 2121，Double; two single connection places 12 are alternately distributed，Simultaneously in each carriage assembly 11，Two junctions 12 of the first carrier unit 111a and the second carrier unit 111b and two junctions 12 of the 3rd carrier unit 111c and the four carrier unit 111d are symmetrically distributed in the both sides of the junction 12 of the second carrier unit 111b and the three carrier unit 111c，For the first carrier unit 111a、Second carrier unit 111b、The phase contrast of the junction 12 of the 3rd carrier unit 111c and the 4th its both sides of carrier unit 111d is 25-45 °.And in each pack support assembly 11, form symmetrical two semi-spiral structure, being sequentially connected with order is the wherein junction 12 between wherein junction the 12, the 3rd carrier unit 111c and the four carrier unit 111d between junction the 12, second carrier unit 111b and the three carrier unit 111c between the first carrier unit 111a and the second carrier unit 111b, is also formed with the helical structure of another symmetry in two simultaneously adjacent carriage assemblys 11.This distribution mode by each junction 12, " fish mouth " phenomenon when intravascular stent 1 bends can be effectively reduced, intravascular stent 1 is made to have good compliance and pass through performance, suitable in complex lesions, the same time also has good spreading performance, radially support performance and expands uniform performance.
Embodiment three
nullReferring to Fig. 4，In the present embodiment，Intravascular stent 1 is open loop structure，Including the many groups of carriage assemblys being sequentially connected with vertically 11，Thus forming the overall length of intravascular stent 1，Each carriage assembly 11 includes the first carrier unit 111a、Second carrier unit 111b、3rd carrier unit 111c and the 4th carrier unit 111d，Thus forming the whole supporting construction of intravascular stent 1，First carrier unit 111a、Second carrier unit 111b、3rd carrier unit 111c and the 4th carrier unit 111d is all with the sinusoidal wave radially surrounding formation circulus of form，Simultaneously in each carriage assembly 11，There are between first carrier unit 111a and the second carrier unit 111b two junctions 12，Between second carrier unit 111b and the three carrier unit 111c, there is a junction 12，Between 3rd carrier unit 111c and the four carrier unit 111d, also only there is a junction 12，And between the 4th carrier unit 111d and the first carrier unit 111a of a rear carriage assembly 11 of usually this carriage assembly 11, there are two junctions 12，And each junction 12 is all H-shaped，Entirety to this intravascular stent 1 is two junctions 12、One junction 12、One junction 12、Two junctions 12、One junction 12、One junction 12 ... mode circulate successively，The i.e. mode axial circulation distribution of 211211.And in each carriage assembly 11, it is also formed with a helical structure, this helical structure surrounds successively along each junction 12 and is formed, and starting point is one of them junction 12 between the first carrier unit 111a and the second carrier unit 111b, and this helical structure also extends to the wherein junction 12 between the 4th carrier unit 111d and the first carrier unit 111a of later group carriage assembly 11 successively.Distribution by each junction 12, it is possible to make intravascular stent 1 have good compliance, also has good spreading performance simultaneously.
The foregoing is only preferred embodiment of the present invention, its structure is not limited to the above-mentioned shape enumerated, all any amendment, equivalent replacement and improvement etc. made within the spirit and principles in the present invention, should be included within protection scope of the present invention.
Claims (10)
1. an intravascular stent, it is characterized in that: include the some carrier units being in axial direction sequentially connected with, each described carrier unit is and circumferentially surrounds, in corrugated mode, the circulus formed successively, and carrier unit described in adjacent two staggers setting, the trough of carrier unit described in one and crest after the crest of previous described carrier unit and trough are corresponding respectively, between carrier unit, there is junction described in adjacent two, described intravascular stent has both ends, each described carrier unit between both ends with and its adjacent described carrier unit between the quantity either-or between 1 and 2 of described junction and at least two between both ends described in the quantity of described junction between carrier unit different from each other.
2. intravascular stent as claimed in claim 1, it is characterised in that: in axial direction between two described carrier units at both ends place and adjacent described carrier unit, it is respectively provided with two junctions.
3. intravascular stent as claimed in claim 1, it is characterised in that: there are between two adjacent described carrier units two described connections, and circumferentially interval, direction, two described junctions is arranged.
4. intravascular stent as claimed in claim 1, it is characterised in that: the crest of trough and carrier unit described in rear that each described junction is previous described carrier unit is connected formation.
5. intravascular stent as claimed in claim 1, it is characterised in that: all H-shaped structure in each described junction of carrier unit described in adjacent two.
6. the intravascular stent as described in any one of claim 1-5, it is characterized in that: described intravascular stent includes the some carriage assemblys being sequentially connected with in the axial direction, each described carriage assembly includes four the described carrier units being sequentially connected with, four described carrier unit respectively the first carrier units, second carrier unit, 3rd carrier unit and the 4th carrier unit, described first carrier unit, described second carrier unit, described 3rd carrier unit and described 4th carrier unit are in axial direction sequentially connected with, and described first carrier unit of carriage assembly has described junction described in described 4th carrier unit and rear of previous described carriage assembly.
7. intravascular stent as claimed in claim 6, it is characterized in that: there are between described first carrier unit and described second carrier unit two described junctions, there is between described second carrier unit and described 3rd carrier unit a described junction, between described 3rd carrier unit and described 4th carrier unit, there are two described junctions.
8. intravascular stent as claimed in claim 7, it is characterised in that: described intravascular stent is respectively positioned on same straight line the wherein wherein junction described in of junction, described second carrier unit and the described junction of described 3rd carrier unit, described 3rd carrier unit and described 4th carrier unit described in of the first carrier unit described in each described carriage assembly and described second carrier unit after launching vertically.
9. intravascular stent as claimed in claim 7, it is characterised in that: the first carrier unit described in each described carriage assembly is symmetrically distributed in the both sides of described second carrier unit and the described junction of described 3rd carrier unit with two described junctions of described second carrier unit and two described junctions of described 3rd carrier unit and described 4th carrier unit.
10. intravascular stent as claimed in claim 6, it is characterized in that: there are between described first carrier unit and described second carrier unit two described junctions, there is between described second carrier unit and described 3rd carrier unit a described junction, between described 3rd carrier unit and described 4th carrier unit, there is a described junction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410815316.6A CN105769400A (en) | 2014-12-23 | 2014-12-23 | Vascular stent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410815316.6A CN105769400A (en) | 2014-12-23 | 2014-12-23 | Vascular stent |
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| Publication Number | Publication Date |
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| CN105769400A true CN105769400A (en) | 2016-07-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410815316.6A Pending CN105769400A (en) | 2014-12-23 | 2014-12-23 | Vascular stent |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107242922A (en) * | 2017-06-03 | 2017-10-13 | 常州乐奥医疗科技股份有限公司 | A kind of super compliance nickel-titanium alloy intravascular scaffold |
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| US20090204201A1 (en) * | 2006-05-18 | 2009-08-13 | C. R. Bard, Inc. | Bend-capable stent prosthesis |
| CN103118638A (en) * | 2010-08-02 | 2013-05-22 | 科迪斯公司 | Flexible helical stent having intermediate structural feature |
| CN203493779U (en) * | 2013-09-18 | 2014-03-26 | 深圳市金瑞凯利生物科技有限公司 | Coronary vessel stent |
| CN204411036U (en) * | 2014-12-23 | 2015-06-24 | 深圳市金瑞凯利生物科技有限公司 | Intravascular stent |
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2014
- 2014-12-23 CN CN201410815316.6A patent/CN105769400A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090204201A1 (en) * | 2006-05-18 | 2009-08-13 | C. R. Bard, Inc. | Bend-capable stent prosthesis |
| CN103118638A (en) * | 2010-08-02 | 2013-05-22 | 科迪斯公司 | Flexible helical stent having intermediate structural feature |
| CN203493779U (en) * | 2013-09-18 | 2014-03-26 | 深圳市金瑞凯利生物科技有限公司 | Coronary vessel stent |
| CN204411036U (en) * | 2014-12-23 | 2015-06-24 | 深圳市金瑞凯利生物科技有限公司 | Intravascular stent |
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| CN107242922A (en) * | 2017-06-03 | 2017-10-13 | 常州乐奥医疗科技股份有限公司 | A kind of super compliance nickel-titanium alloy intravascular scaffold |
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