CN205019198U - Aorta tectorial membrane stent - Google Patents
Aorta tectorial membrane stent Download PDFInfo
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- CN205019198U CN205019198U CN201520685965.9U CN201520685965U CN205019198U CN 205019198 U CN205019198 U CN 205019198U CN 201520685965 U CN201520685965 U CN 201520685965U CN 205019198 U CN205019198 U CN 205019198U
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- overlay film
- tectorial membrane
- support
- metal rack
- stent
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Abstract
The utility model discloses an aorta tectorial membrane stent, including the tectorial membrane with be used for supporting many rings of metal support of tectorial membrane, many rings of metal support arrange along the axial of tectorial membrane in proper order, and every ring of metal support can follow the radial elastic deformation of tectorial membrane, the metal support at tectorial membrane both ends radially predetermine the holding power all be less than the tectorial membrane middle part metal support radially predetermine the holding power. This aorta tectorial membrane stent acts on the vascular wall through the holding power of radially predetermineeing that middle part metal support is stronger, makes the tectorial membrane support obtain sufficient supporting role at the middle part to the radial effort that makes the tectorial membrane support not rely on the both ends support comes anti support to shift, and then can reduce tectorial membrane support both ends to the erosion and the damage of vascular wall, and metal support lower radial holding power in both ends can show and reduces the complication of intermediate layer patient at support near -end and distal end.
Description
Technical field
This utility model relates to technical field of medical instruments, particularly relates to a kind of aorta tectorial membrane stent.
Background technology
Aortic blood Flow Velocity is fast, pressure is high, and blood flow is easier to be caused wound to blood vessel or is amplified by vascular trauma, and hypertension, connective tissue disease, thoracic trauma all may cause dissection of aorta.Dissection of aorta refers to that blood is by aortic tunica intima breach, and entering aorta wall and cause the separation of normal arterial wall, is one of modal arotic disease.Dissection of aorta is the result of membrane structure and abnormal blood flow dynamical inleractions in aorta exception.When aorta textural anomaly, naturally easily there is aortal splitting.Dissection of aorta is a kind of acute disease of danger, even if carry out positive treatment in time, and still may be lethal fast.If dissection of aorta is torn completely, will lose blood on a large scale rapidly and cause circulatory failure and death at once.
Current, the aorta tectorial membrane stent that great majority applied clinically are applied to intracavity reparation is mainly designed by treatment aortic aneurysm, overlay film frame is near, far-end attachment region is all normal blood vessels wall, be directly used in treatment dissection of aorta rack far end or near-end complication can be caused to occur (it is longer that its reason is that interlayer patient generally exists tunica intima strip length, scaffold attached region is used to be generally lesion vessels wall), if support is selected not mate with near-end, far-end outer tube, patient's late result will be affected.In addition, there is nature gradually XISHUAI in Normal aorta, when there is interlayer in aorta, gradually XISHUAI expands further, and overlay film frame used is mostly straight barrel type or fixing conical design on Present clinical, do not meet Normal aorta physiological characteristics, make doctor select support time, often select meet anastomosis of blood vessel proximate dimensional requirement condition support its be difficult to meet the requirement of anastomosis of blood vessel distal dimension; The change of the blood vessel diameter that the arch of aorta Unlimited cycle variation on position and Unlimited cycle blood pressure occurs and produces can make support produce certain erosion to blood vessel wall, bare bracket is obviously strong than other positions to the corrosion function of the arch of aorta, and often to there is inner membrance and middle level in interlayer patient peel off and touch arch of aorta place, therefore to bear support erosiveness more much lower than normal blood vessels for interlayer blood vessel, if bare bracket head end is close to blood vessel wall, the corrosion function to blood vessel is the strongest.
Therefore, how solving overlay film frame two ends and damage blood vessel or damage, avoid rack far end or near-end generation complication, is those skilled in the art's technical problems urgently to be resolved hurrily.
Utility model content
The purpose of this utility model is to provide a kind of aorta tectorial membrane stent, to damage to solve overlay film frame two ends or damages blood vessel, and the problem of rack far end or near-end generation complication.
In order to solve the problem, this utility model provides following technical scheme:
A kind of aorta tectorial membrane stent, comprise overlay film and the multi-turn metal rack for supporting described overlay film, metal rack described in multi-turn is arranged successively along the axis of described overlay film, and often enclose described metal rack can along the radial elastic deformation of described overlay film, the radial direction that the radial direction of the described metal rack at described overlay film two ends presets the described metal rack that support force is all less than in the middle part of described overlay film presets support force.
Preferably, in above-mentioned aorta tectorial membrane stent, the near-end of described overlay film is provided with proximal stent and bare bracket, and the end of described bare bracket is arc transition structure.
Preferably, in above-mentioned aorta tectorial membrane stent, the end of described bare bracket is the arc transition structure of cavity direction bending in described overlay film.
Preferably, in above-mentioned aorta tectorial membrane stent, described proximal stent is the zigzag structure that height interlocks along the structure after described overlay film circumferentially deploying, and described proximal stent and described bare bracket are arranged along the axial overlap of described overlay film.
Preferably, in above-mentioned aorta tectorial membrane stent, described aorta tectorial membrane stent comprises the cone barrel support of prismatic straight cylindrical stent and non-constant section, the proximal diameter larger than distal diameter 5% ~ 60% of described cone barrel support.
Preferably, in above-mentioned aorta tectorial membrane stent, described metal rack is sinusoidal wave structure along the structure after described overlay film circumferentially deploying.
Preferably, in above-mentioned aorta tectorial membrane stent, described overlay film is PET film.
Preferably, in above-mentioned aorta tectorial membrane stent, described metal rack is nick-eltitanium alloy stent.
Preferably, in above-mentioned aorta tectorial membrane stent, two ends and the middle part of described overlay film are equipped with indicating.
Preferably, in above-mentioned aorta tectorial membrane stent, the material of described indicating is platinumiridio.
The aorta tectorial membrane stent that this utility model provides, comprise overlay film and the multi-turn metal rack for supporting overlay film, multi-turn metal rack is arranged successively along the axis of overlay film, and often enclose metal rack can along the radial elastic deformation of overlay film, the radial direction that the radial direction of the metal rack at overlay film two ends presets the metal rack that support force is all less than in the middle part of overlay film presets support force.This aorta tectorial membrane stent presets support force vasoactive wall by the radial direction that middle part metal rack is stronger, overlay film frame is made to obtain enough supporting roles at middle part, thus the radial forces making overlay film frame not rely on two ends support carrys out anti-stent migration, and then overlay film frame two ends can be reduced to the erosion of blood vessel wall and damage, the radial support power that two ends metal rack is lower significantly can reduce the complication of interlayer patient at mount proximal end and far-end.
Accompanying drawing explanation
In order to be illustrated more clearly in this utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the aorta tectorial membrane stent structural representation in this utility model specific embodiment scheme;
Fig. 2 is the aorta tectorial membrane stent bare bracket header structure schematic diagram in this utility model specific embodiment scheme.
In Fig. 1 and Fig. 2:
1-bare bracket, 2-indicating, 3-overlay film, 4-metal rack, 11-bending structure, 12-arc transition structure.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, be clearly and completely described the technical scheme in this utility model embodiment, 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.
Please refer to Fig. 1 and Fig. 2, Fig. 1 is the aorta tectorial membrane stent structural representation in this utility model specific embodiment scheme, and Fig. 2 is the aorta tectorial membrane stent bare bracket header structure schematic diagram in this utility model specific embodiment scheme.
In a kind of specific embodiment scheme, this utility model provides a kind of aorta tectorial membrane stent, for isolated blood vessel to treat dissection of aorta, can also be used for isolated ulcer, perforation, aneurysm.This aorta tectorial membrane stent comprises overlay film 3 and the multi-turn metal rack 4 for supporting overlay film 3, multi-turn metal rack 4 is arranged successively along the axis of overlay film 3, and often enclose metal rack 4 can along the radial elastic deformation of overlay film 3, the radial direction that the radial direction of the metal rack 4 at overlay film 3 two ends presets the metal rack 4 that support force is all less than in the middle part of overlay film 3 presets support force.
Concrete, this aorta tectorial membrane stent comprises metal rack 4, overlay film 3, indicating 2 and is positioned at the bare bracket 1 of overlay film frame near-end.Metal rack 4 is connected to overlay film 3, overlay film 3 fatigue durability is good, can ensure can be compressed under external force before implantable intravascular, thus can implantable intravascular smoothly, when acting on the power on overlay film frame and cancelling, metal rack 4 elasticity discharges, thus overlay film 3 can be strutted, to be fitted in blood vessel.Multiple metal rack 4 forms the cylinder-like structure that can radially shrink, for fixed support overlay film 3, overlay film 3 is made to form cylinder-like structure, radial elastic deformation can be there is under external force, change the radial dimension of overlay film frame, be convenient to overlay film frame by induction system Wicresoft implantable intravascular, form new channel of blood flow after the release of the aorta of overlay film frame, can reach and blood and blood vessel wall are completely cut off.Bare bracket 1 is connected to the near-end (referring to proximal part herein) of overlay film 3, owing to not having the covering of overlay film 3, so be called bare bracket.The overlay film that overlay film 3 in this programme is commonly used for those skilled in the art, its material is biocompatibility macromolecule film, is specifically as follows the material such as PET film, e-PTFE film.Preferably, the overlay film 3 in this programme is PET film.
Indicating 2 is arranged at near-end and the distal edge edge of overlay film 3, the material of indicating 2 can be platinum, tantalum, platinumiridio, gold, platinum-tungsten alloys any one, preferably, indicating 2 material in this programme is platinumiridio.The configuration of indicating 2 can be any one or combination in any of annulus, circle, two circle, pole, silk, spring winding circle or the design of band anticreep.The fixed form of indicating 2 can be indicating filament winding system, indicating circumferential weld closes, bonding etc.Indicating 2 can not by X-ray transmission, and for developing under X-ray, indicating 2 is used to indicate overlay film 3 edge or other assigned address of overlay film frame, is convenient to medical personnel show overlay film frame by developing apparatus position in outside, is convenient to the location to overlay film frame.Preferably, the two ends of overlay film 3 and middle part are equipped with indicating 2, facilitate medical personnel like this to the location in the middle part of overlay film, and overlay film frame can be made accurately to arrive affected part.
The metal rack 4 of this aorta tectorial membrane stent is self-expansion type support, and the processing technique of metal rack 4 can be through welding, bundling, be socketed to form or the sizing of laser cut metal pipe forms after tinsel heat treatment shaping.Metal rack 4 can select the materials such as Nitinol, cochrome, rustless steel or other memory metals, and preferably, in this programme, the material of metal rack 4 is Nitinol.Each metal rack 4 along overlay film 3 circumferentially, and all can along the radial direction generation elastic deformation of overlay film 3.Concrete, in order to meet good radial contraction and the supportive of overlay film frame, metal rack 4 in this programme is after the circumferentially deploying of overlay film 3, metal rack 4 undulate or zigzag, concrete, the configuration of metal rack 4 can be the elasticity zig-zag that sinusoidal wave form, Z-type ripple or height are alternate, but is not only confined to this several configuration, also can be other shapes, or various bending, wave or zigzag fashion combination.Preferably, the metal rack 4 in this programme is sinusoidal wave structure along the structure after overlay film 3 circumferentially deploying.
It should be noted that, the near-end of overlay film 3 is provided with proximal stent and bare bracket 1, proximal stent just refers to the metal rack 4 of the first segment being positioned at overlay film 3 near-end, bare bracket 1 plays a part to assist overlay film frame to fix, prevent overlay film frame to be shifted, provide convenience for rear release simultaneously, improve the release accuracy of overlay film frame, reduce operation easier.Preferably, the end of the bare bracket 1 in this programme is arc transition structure 12, and as shown in Figure 2, more preferably, the arc transition structure 12 of bare bracket 1, also to cavity direction bending in overlay film 3, forms bending structure 11, as shown in Figure 2.The end of bare bracket 1 adopts arc transition and the structural design bent inwards, and effectively can avoid the generation of the event such as blood vessel erosion, vascular puncture, vascular tear due to the generation of bare bracket 1 end agnail.
Preferably, the proximal stent sealed is the zigzag structure that height interlocks along the structure after overlay film 3 circumferentially deploying, and proximal stent and bare bracket 1 are arranged along the axial overlap of overlay film 3, as shown in Figure 2, concrete, proximal stent is arranged in pairs or groups by the suture of ebb place and bare bracket 1, the trough suture of bare bracket 1 and the ebb place of proximal stent positioned opposite.Both ensure that overlay film 3 proximal edge had the more strong point, again by the low requirement of overlay film frame to front end grappling length.With original bare bracket compared with proximal stent not Overlap design, this programme overlay film 3 near-end edge can obtain the more and relatively uniform strong point, farthest reduce the pocket effect that overlay film frame is formed when Ink vessel transfusing is in compressive state, effectively reduce internal hemorrhage due to trauma risk.With original bare bracket compared with the crest Overlap design of contour proximal stent, this programme effectively reduces the height of proximal stent, to focus near-end landing length requirement, (overlay film frame has at least a joint overlay film frame could effectively reduce internal hemorrhage due to trauma risk in touch-down zone to remarkable reduction overlay film frame, otherwise the blood gap be easy between the overlay film 3 that is never supported and blood vessel wall flows in interlayer cut or aneurysm), make product adaptation disease wider, bending property is better.
In order to reduce pocket effect and internal hemorrhage due to trauma risk further, preferably, this programme can also adopt encryption supported design in the edges at two ends of overlay film 3, concrete, exactly the metal rack 4 at overlay film 3 two ends is arranged more fixing point to support the edge of overlay film 3, setting like this, just can reduce the pocket effect at overlay film 3 edge further, thus significantly reduces the incidence rate of internal hemorrhage due to trauma.
It should be noted that, the aorta tectorial membrane stent that this utility model provides comprises the cone barrel support of prismatic straight cylindrical stent and non-constant section, and has different length specifications.Doctor can according to the gradually details condition of lesion vessels and length of lesion, select the overlay film frame of appropriate size, this overlay film frame is enable to meet suitable near-end grappling when treating dissection of aorta simultaneously, covering all interlayer cuts and suitable far-end grappling, effective reduction interlayer is inverse to be torn, shutoff is invalid, rack far end complication, reduces operation technique difficulty and surgery cost.
Because human vas is the configuration that a gradual change is gradually thin by proximal part to distal end, the gradual change degree of different people is different, and in addition, overlay film frame has different length specification, and vessel segment is longer, and gradually thin percentage ratio is larger.This programme according to blood vessel on different length present the proximal diameter percentage ratio larger than distal diameter and support Design requirement, by larger than distal diameter for the proximal diameter of cone barrel support 5% ~ 60%.After having enriched the taper specification of support like this, the overlay film frame of appropriate size can be had to meet support and to obtain enough support forces at Ink vessel transfusing, doctor can be made to meet while blood vessel proximal diameter requires in selection and to meet distal diameter requirement, far-end is avoided to make blood vessel wall bear excessive radial active force and cause blood vessel to corrode because stent size is excessive, meanwhile, it also avoid far-end and produce internal hemorrhage due to trauma because stent size is too small.It should be noted that, the diameter excursion of the cone barrel support in this programme is satisfied most patient vessel's configuration and setting, and certainly, those skilled in the art can also according to other vascular configuration, design the overlay film frame of other different size taperings, this programme repeats no more.
It should be noted that, it is the distribution mode that middle part is greater than two ends that the radial direction of the metal rack 4 of overall overlay film frame is preset support force distribution design by this utility model.Because metal rack 4 has elastic support, it can along the radial elastic shrinkage of overlay film 3, expansion, and therefore, the radial direction of metal rack 4 is preset support force and specifically just referred to its elastic force preset, and reacts in its default elastic deformation.Those skilled in the art are known, the radial direction of metal rack 4 presets the material of support force and metal rack 4, configuration, processing technique and size etc. are relevant, therefore, the radial direction that those skilled in the art can change each metal rack 4 by different approaches presets support force.
The radial direction of the metal rack 4 that unlike material makes is preset support force and may be differed larger, the metal rack 4 of identical material is also relevant with its processing technology, the metal rack 4 made as memory metal is relevant with its AF value, metal rack 4 does not almost have radial support power when larger lower than AF value temperature, starting to have radial support power close to during AF value temperature, and its radial force starts relatively stable under the temperature conditions in AF value above several years.The metal rack 4 of identical material is through controlling its different AF value, and its radial default support force is also variant.
The impact of stent configuration on support radial support power comprises the angle etc. between the bending radius at summit (crest, trough as undulating stent) place, adjacent supports bar.In general, the angle within the specific limits between support bar is larger, and radial support power is larger, and general laser cut stent angle is excessive, and anti-fatigue performance is poorer.Summit bending radius is larger, and its radial support power is less, but bending radius to cross small rack fatigue performance poor.Under same support bar angle, crest number is more, and radial force is larger, but crest number increases rear induction system size can increase, larger than radial support power time uneven when angle is even, under same angle condition, generally uprises support radial support power and is greater than equal-altitude support.When other condition is identical, the string diameter of the support bar of metal rack 4, thickness or width dimensions are larger, and its radial support power is larger.
Above-mentioned two sections of contents are methods that the radial direction of change metal rack 4 well known by persons skilled in the art presets support force, those skilled in the art can according to concrete applied environment and topology requirement, the radial direction being changed metal rack 4 by the Different factor changing metal rack 4 presets support force, presets support force to make having larger radial direction than two ends in the middle part of overlay film frame.Meanwhile, by regulating the configuration of metal rack 4 and the spacing of adjacent metal support 4, overlay film frame is made to have good compliance, supportive, adherent property, bendability etc.
Because the concrete size of the radial support power of metal rack 4 is restricted by multifactor common adjustment, set to overlay film frame and expect that the blood vessel size used is relevant, namely when same overlay film frame is placed on different-diameter Ink vessel transfusing, the radial support power that blood vessel bears is different, support compresses more serious in the blood vessel, active force suffered by blood vessel wall is larger, but general non-linear relation.Therefore, the occurrence of metal rack 4 radial support power is not limited herein.
In overlay film frame implantable intravascular process, doctor rule of thumb can carry out mark position by the indicating 2 of mount proximal end and far-end, positions overlay film frame at affected area.The radial support power that middle bracket is higher makes overlay film frame when discharging 2 to 3 joint overlay film frame, overlay film frame front end can be launched and substantially be attached blood vessel wall, create conditions for carrying out release fast behind support adjustment location, avoid overlay film frame to block aortic flow for a long time, affect surgical effect or human body is caused serious harm.
The metal rack radial support power at these aorta tectorial membrane stent two ends is less than middle part metal rack radial support power, the radial support masterpiece stronger by middle part metal rack is used for blood vessel wall, overlay film frame is made to obtain enough supporting roles at middle part, effectively can prevent stent migration, support is made not rely on the powerful radial support power of two ends support to prevent stenter to implant retrodisplacement, thus the radial support power of the metal rack at two ends can be made to reduce, mount proximal end and far-end is avoided to damage blood vessel, damage or erosion, the radial support power that two ends metal rack is lower significantly can reduce the complication of interlayer patient at mount proximal end and far-end.And the stronger radial support of overlay film middle bracket is tried hard to keep while the bending property of card support, anti-cripetura and is ensured that support makes the true chamber of blood vessel return to original size as far as possible, is extruded as much as possible by false intracavity blood, promotes false chamber thrombosis, improves interlayer healing ability.
In sum, this utility model provides and a kind ofly can either meet support and obtain enough support forces at Ink vessel transfusing, can meet near-end grappling and distal anchor provisioning request, all interlayer cuts of disposable covering, can avoid again the aorta tectorial membrane stent damaged blood vessel simultaneously.
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 (10)
1. an aorta tectorial membrane stent, comprise overlay film (3) and the multi-turn metal rack (4) for supporting described overlay film (3), metal rack described in multi-turn (4) is arranged successively along the axis of described overlay film (3), and often enclose described metal rack (4) can along the radial elastic deformation of described overlay film (3), it is characterized in that, the radial direction of the described metal rack (4) at described overlay film (3) two ends is preset the radial direction that support force is all less than the described metal rack (4) at described overlay film (3) middle part and is preset support force.
2. aorta tectorial membrane stent according to claim 1, it is characterized in that, the near-end of described overlay film (3) is provided with proximal stent and bare bracket (1), and the end of described bare bracket (1) is arc transition structure (12).
3. aorta tectorial membrane stent according to claim 2, is characterized in that, the end of described bare bracket (1) is the arc transition structure (12) to the interior cavity direction bending of described overlay film (3).
4. aorta tectorial membrane stent according to claim 2, it is characterized in that, described proximal stent is the zigzag structure that height interlocks along the structure after described overlay film (3) circumferentially deploying, and described proximal stent and described bare bracket (1) are arranged along the axial overlap of described overlay film (3).
5. aorta tectorial membrane stent according to claim 1, is characterized in that, described aorta tectorial membrane stent comprises the cone barrel support of prismatic straight cylindrical stent and non-constant section, the proximal diameter larger than distal diameter 5% ~ 60% of described cone barrel support.
6. aorta tectorial membrane stent according to claim 1, is characterized in that, described metal rack (4) is sinusoidal wave structure along the structure after described overlay film (3) circumferentially deploying.
7. aorta tectorial membrane stent according to claim 1, is characterized in that, described overlay film (3) is PET film.
8. aorta tectorial membrane stent according to claim 1, is characterized in that, described metal rack (4) is nick-eltitanium alloy stent.
9. aorta tectorial membrane stent according to claim 1, is characterized in that, the two ends of described overlay film (3) and middle part are equipped with indicating (2).
10. aorta tectorial membrane stent according to claim 9, is characterized in that, the material of described indicating (2) is platinumiridio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520685965.9U CN205019198U (en) | 2015-09-07 | 2015-09-07 | Aorta tectorial membrane stent |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520685965.9U CN205019198U (en) | 2015-09-07 | 2015-09-07 | Aorta tectorial membrane stent |
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| CN205019198U true CN205019198U (en) | 2016-02-10 |
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| CN201520685965.9U Expired - Fee Related CN205019198U (en) | 2015-09-07 | 2015-09-07 | Aorta tectorial membrane stent |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105030373A (en) * | 2015-09-07 | 2015-11-11 | 湖南埃普特医疗器械有限公司 | Aorta covered stent |
| CN105796218A (en) * | 2016-03-08 | 2016-07-27 | 黄连军 | Covered stent |
| CN106063735A (en) * | 2016-07-14 | 2016-11-02 | 杨牟 | A kind of artificial blood vessel bracket and carrier thereof |
| CN109069261A (en) * | 2016-04-25 | 2018-12-21 | 美敦力瓦斯科尔勒公司 | interlayer prosthesis system and method |
| CN109966034A (en) * | 2017-12-27 | 2019-07-05 | 先健科技(深圳)有限公司 | Overlay film frame |
| CN111467099A (en) * | 2020-04-16 | 2020-07-31 | 四川大学华西医院 | Intravascular multilayer bare stent system |
| WO2022227283A1 (en) * | 2021-04-30 | 2022-11-03 | 光华临港工程应用技术研发(上海)有限公司 | Aortic covered stent |
| WO2023104157A1 (en) * | 2021-12-10 | 2023-06-15 | 深圳市先健呼吸科技有限公司 | Airway stent |
-
2015
- 2015-09-07 CN CN201520685965.9U patent/CN205019198U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105030373A (en) * | 2015-09-07 | 2015-11-11 | 湖南埃普特医疗器械有限公司 | Aorta covered stent |
| CN105796218A (en) * | 2016-03-08 | 2016-07-27 | 黄连军 | Covered stent |
| CN109069261A (en) * | 2016-04-25 | 2018-12-21 | 美敦力瓦斯科尔勒公司 | interlayer prosthesis system and method |
| CN106063735A (en) * | 2016-07-14 | 2016-11-02 | 杨牟 | A kind of artificial blood vessel bracket and carrier thereof |
| CN109966034A (en) * | 2017-12-27 | 2019-07-05 | 先健科技(深圳)有限公司 | Overlay film frame |
| CN109966034B (en) * | 2017-12-27 | 2021-08-17 | 先健科技(深圳)有限公司 | Covered stent |
| US11576768B2 (en) | 2017-12-27 | 2023-02-14 | Lifetech Scientific (Shenzhen) Co., Ltd. | Stent graft |
| CN111467099A (en) * | 2020-04-16 | 2020-07-31 | 四川大学华西医院 | Intravascular multilayer bare stent system |
| WO2022227283A1 (en) * | 2021-04-30 | 2022-11-03 | 光华临港工程应用技术研发(上海)有限公司 | Aortic covered stent |
| WO2023104157A1 (en) * | 2021-12-10 | 2023-06-15 | 深圳市先健呼吸科技有限公司 | Airway stent |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160210 Termination date: 20170907 |