CN103462733B - Intravascular stent - Google Patents
Intravascular stent Download PDFInfo
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- CN103462733B CN103462733B CN201310463148.4A CN201310463148A CN103462733B CN 103462733 B CN103462733 B CN 103462733B CN 201310463148 A CN201310463148 A CN 201310463148A CN 103462733 B CN103462733 B CN 103462733B
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Abstract
The invention discloses a kind of intravascular stent, its material is: rustless steel, Nitinol, platinum, gold, degradable biomaterial, multilayer materials etc., and its processing mode is: braiding, cutting, engraving, natural molding, secondary operations molding etc.The present invention seeks to overcome existing intravascular stent product on market much not enough, thering is provided a kind of novel can overcome owing to stretch the problem of vascular wall tissue damage that (blood vessel self swells and shrinks and is forced to) cause at intravascular stent two ends, the problem of intravascular stent intravascular stent and blood vessel generation relative displacement in blood vessel, intravascular stent axially, radial force can not according to the problem of blood vessel needs setting.Present invention achieves that production cost is low, production technology is simple, quality absolute guarantee, medical personnel are simple to operate, function can ensure.
Description
Technical field
This utility model relates to a kind of cardiovascular disease interventional therapy device, relative positioning, the circular cone of support two-port and blood vessel not easily can occur with blood vessel the design organization being specifically related to intravascular stent in blood vessel is that transition is fitted and not easily injured blood vessel, belongs to technical field of medical instruments.
Background technology
At present, the common disease of cardiovascular and cerebrovascular vessel mainly contains stricture of artery, aneurysm etc., if these diseases treat not in time may cause blood vessel blockage, tumor body breaks, by the life security of the serious harm mankind.For aneurysmal treatment, the early stage main surgical operation such as adopt excision or folder to close.
Current support interventional procedure is one of Main Means of Cardiovarscular, and widely used intravascular stent mainly contains bare metal stent and bracket for eluting medicament clinically.Bare metal stent achieves the curative effect attracted people's attention after entering clinical treatment, but the application being through more than ten years also exposes some shortcomings and disadvantage gradually, as easily cause thrombosis, restenosis rate high, cause vascular damaged etc., clinical research shows that bare metal stent implants latter 6 months in-stent restenosis incidence rates up to 20% ~ 30%.The application of drug-eluting stent, make restenosis rate in postoperative 1 year drop to less than 10%, but clinical research shows, bracket for eluting medicament late result is not good, easily forms thrombosis, and case fatality rate or heart infarction incidence rate higher.In-stent restenosis problem has had a strong impact on quality of life and the life and health of patient, is technical barrier urgently to be resolved hurrily.
Expansion during stenter to implant causes localized vascular injury to be one of basic reason of bringing out in-stent restenosis.Expansion when existing bare metal stent, bracket for eluting medicament, Biodegradable scaffold are implanted all can cause blood vessel injury in various degree.Find by prior art documents, China Patent No.: 200620057977.8, which disclose a kind of intravascular stent, its structure is: support support body adopts nitinol alloy wire to make, there is the multi-layer corrugated circulus metal master arranged vertically, adjacent two layers metallic supports interlaced arrangement.And for example: China Patent No.: 200910199194.1, which disclose a kind of intravascular stent, its structure is: have cast vessel-like, support outer wall surface with thin film, this support have good mechanical performance, can transporting and leakproof.And for example: China Patent No.: 201210111453.2, which disclose the rest body be made up of marmem and the mechanical impedance system formed by Biodegradable material, wherein, rest body is welded after adopting shape-memory alloy wire braiding to form or adopt marmem thin plate to cut, through axial tension, make its axial elongation, radial shortening, then carry out compound with Biodegradable material, form integrated composite construction.And for example: China Patent No.: 201110446841.1, this braided support is woven by multi-filament material and forms, and it is characterized in that, according to the silk material radical of this braided support, the silk material of the end of this braided support is divided into some stocks, and each rhizoid material wherein in per share silk material is fixed together.China Patent No.: 201020659169.5, relate to a kind of Intracranial temporary bracket, described support is the TRS woven by memory alloy wire, the mid portion of described support is columniform flat segments, the two ends of described support are conical cone sections, the joint of described cone section and described flat segments seamlessly transits, and is fixed together the top forming described conical cone section at the end of the described memory alloy wire of described support one end.
This intravascular stent still cannot to overcome owing to stretch the vascular wall tissue damage problem that (blood vessel self swells and shrinks and is forced to) cause at support two ends, support neither one design organization in blood vessel ensures that support and blood vessel relative displacement can not occur very well, and intravascular stent is axial, radial force can not need change according to blood vessel.
Utility model content
The design of breakthrough Traditional Thinking is adopted in order to overcome the above problems this utility model, this utility model object is that to overcome existing intravascular stent product on market much not enough, thering is provided a kind of novel can overcome owing to stretch the problem of vascular wall tissue damage that (blood vessel self swells and shrinks and is forced to) cause at intravascular stent two ends, the problem of intravascular stent intravascular stent and blood vessel generation relative displacement in blood vessel, intravascular stent axially, radial force can not according to the problem of blood vessel needs setting.This utility model achieves that production cost is low, production technology is simple, quality absolute guarantee, medical personnel are simple to operate, function can ensure.
This utility model can realize in the following manner:
A kind of intravascular stent is made up of support circular cone one, support cylinder one, bracket tab ring, support cylinder two, support circular cone two, its material is: rustless steel, Nitinol, platinum, gold, degradable biomaterial, multilayer materials etc., and its processing mode is: braiding, cutting, engraving, natural molding, secondary operations molding etc.; Can reduce vascular wall tissue damage, support and blood vessel can keep relative displacement.It is characterized in that: support circular cone one is positioned at one end of intravascular stent, support cylinder one is between support circular cone one and bracket tab ring, bracket tab ring is between support cylinder one and support cylinder two, support cylinder two is between bracket tab ring and support circular cone two, and support circular cone two is positioned at the other end of intravascular stent; Support circular cone one and support circular cone two are similar and are taper shape, less the closer to its diameter of support port, (namely having arc transition) that bracket end silk material head end has been acute angle or obtuse angle process, bracket end silk material head end is free state, is through from support circular cone one end face to the whole rack bore of support circular cone biend; Support cylinder one and support cylinder two are similar and for cylindrical, can be considered that one has just superposed one or more bracket tab ring thereon; Bracket tab ring is ring-type, and its convex cross section is circular arc or polygon or circular arc and polygonal in conjunction with shape.
According to intravascular stent described in the utility model, it is characterized in that: support has very strong elastic memory, elastic deformation can be there is under certain external forces, under free state, diameter dimension closes is bracket end mouth diameter < support cylinder one diameter < frame protruding ring diameter, as Fig. 1.
According to intravascular stent described in the utility model, it is characterized in that: silk material is staggered each other, its staggered angle is transformable (namely the helix pitch of taenidium material 10 is transformable), and its reticulated cell formed also is change, and support can axial stretching.
Fig. 5, Fig. 6 are the structures be derived on Fig. 1 basis, appearance profile two ends port is less than normal, it is protruding that centre has (one or more), under free state, diameter dimension closes and is: G < H < I, it connects excessively, and place is for excessively smooth, and the appearance profile line 20 of axis direction is that circular curve or many SPLs connect.
Utility model scheme two:
This utility model intravascular stent is made up of the support circular cone at two ends, the bracket tab ring at two ends, support cylinder.According to this utility model, provide a kind of intravascular stent and can reduce vascular wall tissue damage, support and blood vessel can keep relative displacement.It is characterized in that: support circular cone is positioned at the two ends of intravascular stent, protruding ring is between support circular cone and support cylinder, and protruding ring is positioned at the two ends of support cylinder; Support circular cone is conical, less the closer to its diameter of support port, (i.e. arc transition) that bracket end silk material head end has been acute angle or obtuse angle process, bracket end silk material head end is free state, and the whole rack bore of port from the Single port of support circular cone to other end support circular cone is through.
According to intravascular stent described in the utility model, it is characterized in that: intravascular stent has very strong elastic memory, elastic deformation can be there is under certain external forces, under free state, diameter dimension closes and is: bracket end silk material head end diameter < protruding ring diameter, support body diameter < protruding ring diameter, (Fig. 7).
Utility model scheme three:
It is characterized in that: local silk material is interrupted, silk material warpage fracture 21 is formed by the silk material interrupted, the head end of silk material warpage fracture 21 is interrupted rear formation bulb-type, the outside warpage of silk material warpage fracture 21, the included angle A < 90 ° that itself and intravascular stent are axially formed, silk material warpage fracture 21 penetrates blood vessel and plays intravascular stent axial location in blood vessel.
Utility model scheme four:
It is characterized in that: local silk material is interrupted, silk material fracture 23 is formed by the silk material interrupted, a part is removed by the silk material interrupting local, namely close section 22 and rare section 24 of intravascular stent is formed, the head end of silk material fracture 23 is interrupted rear formation bulb-type, and close section 22 of intravascular stent and rare section 24 has obvious change (>=10%) in axis, radial force.
A kind of intravascular stent described in the utility model, its material is: rustless steel, Nitinol, platinum, gold, degradable biomaterial, multilayer materials etc., and its processing mode is: braiding, cutting, engraving, natural molding, secondary operations molding etc.This utility model object is that to overcome existing intravascular stent product on market much not enough, thering is provided a kind of novel can overcome owing to stretch the problem of vascular wall tissue damage that (blood vessel self swells and shrinks and is forced to) cause at intravascular stent two ends, the problem of intravascular stent intravascular stent and blood vessel generation relative displacement in blood vessel, intravascular stent axially, radial force can not according to the problem of blood vessel needs setting.This utility model achieves that production cost is low, production technology is simple, quality absolute guarantee, medical personnel are simple to operate, function can ensure.
The utility model has the advantage of: a kind of novel intravascular stent is provided, can overcome owing to stretch the problem of vascular wall tissue damage that (blood vessel self swells and shrinks and is forced to) cause at intravascular stent two ends, the problem of intravascular stent intravascular stent and blood vessel generation relative displacement in blood vessel, intravascular stent axially, radial force can not according to the problem of blood vessel needs setting.This utility model achieves that production cost is low, production technology is simple, quality absolute guarantee, medical personnel are simple to operate, function can ensure.
Accompanying drawing explanation
Fig. 1: be this utility model scheme one intravascular stent free state structural representation
Fig. 2: be this utility model scheme one intravascular stent generalized section when supporting in blood vessel
Fig. 3: be this utility model scheme one intravascular stent free state 3 D stereo schematic diagram
Fig. 4: the enlarged diagram being I place
Fig. 5: be this utility model scheme one intravascular stent free state structural representation
Fig. 6: be this utility model scheme one intravascular stent free state structural representation
Fig. 7: be this utility model scheme two intravascular stent free state structural representation
Fig. 8: be this utility model scheme two intravascular stent free state 3 D stereo schematic diagram
Fig. 9: be this utility model scheme two intravascular stent generalized section when supporting in blood vessel
Figure 10: be this utility model scheme three intravascular stent free state structural representation
Figure 11: be this utility model scheme four intravascular stent free state structural representation
Figure 12: be this utility model scheme four intravascular stent free state structural representation
in figure:01, support circular cone one, 02, support cylinder one, 03, bracket tab ring, 04, support cylinder two, 05, support circular cone two, 06, blood vessel, 07, support port, 08, blood vessel is protruding, and 10, silk material, 11, bracket end silk material head end, 12, support circular cone, 13, bracket tab ring, 14, support cylinder, 15, support port, 16, blood vessel is protruding, 17, bracket end silk material head end, 18, blood vessel, 20, contour line, 21, silk material warpage fracture, 22, rare section, 23, silk material fracture, 24, close section.
detailed description of the invention:
Below in conjunction with accompanying drawing 1-12, this utility model is described in detail, technical scheme in this utility model embodiment is clearly and completely described, obviously, described embodiment is only this utility model part embodiment, instead of whole embodiments.Based on the embodiment in this utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of this utility model protection.
Utility model scheme one:
This utility model can overcome owing to stretch the vascular wall tissue damage problem that (blood vessel self swells and shrinks and is forced to) cause at intravascular stent two ends, and intravascular stent is in blood vessel intravascular stent and blood vessel generation relative displacement problem.This utility model is designed with one or more bracket tab ring 03 on support cylinder 1 and support cylinder 2 04, bracket tab ring 03 is protruding in blood vessel, make vascularization blood vessel projection 08, bracket tab ring 03 is set in the groove of blood vessel projection 08, and namely intravascular stent intravascular stent and blood vessel in blood vessel relative displacement can not occur, support circular cone 1 and support circular cone 2 05 are conical, less the closer to its diameter of support port 07, bracket end silk material head end 11 is for going (namely the having arc transition) of acute angle or obtuse angle process, this process can reduce the damage of support to blood vessel, support circular cone 1 and support circular cone 2 05 are that transition is fitted with blood vessel, bracket end silk material head end 11 is free state, support two-port 07, support circular cone 1, support circular cone 2 05 can free-extension in blood vessel, bracket end silk material head end 11 can not penetrate blood vessel 06(i.e. not easily injured blood vessel easily), be through from support circular cone 1 end face to support circular cone 2 05 end face whole intravascular stent inner chamber, ensure that blood is through in blood vessel and in intravascular stent inner chamber.This utility model intravascular stent sends into blood vessel by carrier, and this intravascular stent is compressive state in carrier, is similar to cylindrical.
Utility model scheme two:
This utility model can overcome owing to stretch the vascular wall tissue damage problem that (blood vessel self swells and shrinks and is forced to) cause at intravascular stent two ends, and intravascular stent is in blood vessel intravascular stent and blood vessel generation relative displacement problem.This utility model bracket tab ring 13 is protruding in blood vessel, and make vascularization blood vessel projection 16, bracket tab ring 13 is set in the groove of blood vessel projection 16, and namely intravascular stent intravascular stent and blood vessel in blood vessel relative displacement can not occur; Support circular cone 12 is conical, less the closer to its diameter of support port 15, bracket end silk material head end 17 is for going (namely the having arc transition) of acute angle or obtuse angle process, this process can reduce the damage of support to blood vessel, support circular cone 12 and blood vessel are that transition is fitted, bracket end silk material head end 17 is free state, and support two-port 15, support circular cone 12 can free-extensions in blood vessel, and bracket end silk material head end 17 can not penetrate blood vessel 18(i.e. not easily injured blood vessel easily).This utility model intravascular stent sends into blood vessel by carrier, and this intravascular stent is compressive state in carrier, is similar to cylindrical.
Utility model scheme three:
This utility model intravascular stent is that local silk material is interrupted on the basis of this utility model scheme one, and it is cutting mode that local silk material is interrupted by the mode interrupted, and silk material is chosen one section in support network outwards allows its warpage.Silk material warpage fracture 21 penetrates blood vessel and plays intravascular stent axial location in blood vessel.
Utility model scheme four:
This utility model intravascular stent is that local silk material is interrupted on the basis of this utility model scheme one, it is cutting mode that local silk material is interrupted by the mode interrupted, silk material is taken out one section (namely reduce the density of silk material, regulate axial, the radial force of intravascular stent) in support network.A kind of axial, radial force of intravascular stent need to arrange a material density according to blood vessel.The pitch (PPI value) that axial, the radial force of intravascular stent can also change a material regulates.
Utility model feature in several utility model scheme of the present utility model can combine or combined crosswise by local feature, and here just not in the concrete introduction of do, but the combination of utility model feature also belongs to this utility model.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses this utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, this utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (1)
1. an intravascular stent, is characterized in that: be made up of support circular cone one (01), support cylinder one (02), bracket tab ring (03), support cylinder two (04), support circular cone two (05); Described support circular cone one (01) is positioned at one end of intravascular stent, support cylinder one (02) is positioned between support circular cone one (01) and bracket tab ring (03), bracket tab ring (03) is positioned between support cylinder one (02) and support cylinder two (04), support cylinder two (04) is positioned between bracket tab ring (03) and support circular cone two (05), and support circular cone two (05) is positioned at the other end of intravascular stent; Support circular cone one (01) and support circular cone two (05) are conical, less the closer to support port (07) diameter, bracket end silk material head end (11) is arc transition, is through from support circular cone one (01) end face to the whole rack bore of support circular cone two (05) end face; Support cylinder one (02) and support cylinder two (04) are for cylindrical, and bracket tab ring (03) is ring-type, and its convex cross section is circular arc or polygon or circular arc and polygonal in conjunction with shape;
Under free state, diameter dimension closes and is: support port (07) diameter < support cylinder one (02) diameter < bracket tab ring (03) diameter; Described support circular cone one (01), support cylinder one (02), bracket tab ring (03), support cylinder two (04) and support circular cone two (05) are formed by silk material (10) is interlaced, and intravascular stent can axial stretching.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310463148.4A CN103462733B (en) | 2013-10-08 | 2013-10-08 | Intravascular stent |
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| CN201310463148.4A CN103462733B (en) | 2013-10-08 | 2013-10-08 | Intravascular stent |
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| CN103462733A CN103462733A (en) | 2013-12-25 |
| CN103462733B true CN103462733B (en) | 2016-02-03 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3240504A4 (en) * | 2014-12-31 | 2018-08-15 | C.R. Bard Inc. | Expandable stent with constrained end |
| CN105559945A (en) * | 2016-02-29 | 2016-05-11 | 微创心脉医疗科技（上海）有限公司 | Covered stent and manufacturing method thereof |
| CN110731834A (en) * | 2019-10-25 | 2020-01-31 | 郑州美港高科生物科技有限公司 | Iron-base alloy renal artery stent |
| CN113288579B (en) * | 2021-06-21 | 2022-07-12 | 卢国华 | Novel artificial lacrimal duct |
| WO2023104103A1 (en) * | 2021-12-10 | 2023-06-15 | 聚辉医疗科技(深圳)有限公司 | Flow diverter stent and system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6015431A (en) * | 1996-12-23 | 2000-01-18 | Prograft Medical, Inc. | Endolumenal stent-graft with leak-resistant seal |
| CN102715970A (en) * | 2012-05-28 | 2012-10-10 | 张�杰 | Removable multi-purpose medical airway stent |
| CN102727332A (en) * | 2011-04-14 | 2012-10-17 | 朝日英达科株式会社 | Stent |
| CN102905650A (en) * | 2010-05-25 | 2013-01-30 | 访问点技术公司 | Stent |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7481836B2 (en) * | 2006-03-30 | 2009-01-27 | Medtronic Vascular, Inc. | Prosthesis with coupling zone and methods |
| KR101076721B1 (en) * | 2009-07-06 | 2011-10-26 | 가톨릭대학교 산학협력단 | Stent and apparatus and method thereof |
| WO2011068262A1 (en) * | 2009-12-03 | 2011-06-09 | 주식회사 엠아이텍 | Stent for bile duct |
-
2013
- 2013-10-08 CN CN201310463148.4A patent/CN103462733B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6015431A (en) * | 1996-12-23 | 2000-01-18 | Prograft Medical, Inc. | Endolumenal stent-graft with leak-resistant seal |
| CN102905650A (en) * | 2010-05-25 | 2013-01-30 | 访问点技术公司 | Stent |
| CN102727332A (en) * | 2011-04-14 | 2012-10-17 | 朝日英达科株式会社 | Stent |
| CN102715970A (en) * | 2012-05-28 | 2012-10-10 | 张�杰 | Removable multi-purpose medical airway stent |
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