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CN110063824A - A kind of vertebral artery stent - Google Patents

A kind of vertebral artery stent Download PDF

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Publication number
CN110063824A
CN110063824A CN201910497297.XA CN201910497297A CN110063824A CN 110063824 A CN110063824 A CN 110063824A CN 201910497297 A CN201910497297 A CN 201910497297A CN 110063824 A CN110063824 A CN 110063824A
Authority
CN
China
Prior art keywords
stent
tilt stand
vertebral artery
bifurcated
fixedly connected
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910497297.XA
Other languages
Chinese (zh)
Inventor
李天晓
王瑞罡
李荣福
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhengzhou Meigang High-Tech Biotechnology Co Ltd
Original Assignee
Zhengzhou Meigang High-Tech Biotechnology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhengzhou Meigang High-Tech Biotechnology Co Ltd filed Critical Zhengzhou Meigang High-Tech Biotechnology Co Ltd
Priority to CN201910497297.XA priority Critical patent/CN110063824A/en
Publication of CN110063824A publication Critical patent/CN110063824A/en
Pending legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/82Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2250/00Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2250/0058Additional features; Implant or prostheses properties not otherwise provided for
    • A61F2250/0067Means for introducing or releasing pharmaceutical products into the body

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)

Abstract

The invention discloses a kind of vertebral artery stents, including the first tilt stand, the side of first tilt stand is fixedly connected with the second tilt stand, the side of second tilt stand is fixedly connected with the first bifurcated stent, the side of first bifurcated stent is fixedly connected with the second bifurcated stent, one end of first tilt stand and the second tilt stand is fixedly connected to straight support bracket, and the outer surface of straight support bracket is fixedly connected with annular expansion bracket.The vertebral artery stent, pass through the setting of the first tilt stand and the second tilt stand, while supporting vertebral artery, which is expanded by external force, and the vertebral artery stent is effectively supported, uniform force, firm supporting supports the vertebral artery stent effectively to the arteria carotis of bifurcated by the setting of the first bifurcated stent and the second bifurcated stent, it has ensured that blood flow is smooth, and then has improved the service efficiency of the vertebral artery stent.

Description

A kind of vertebral artery stent
Technical field
The present invention relates to vertebral artery stent technical field, specially a kind of vertebral artery stent.
Background technique
The phylogenetic atherosclerosis of vertebral artery is one of the main reason for leading to rear circulation stroke about 1/5th Rear circulation stroke occur in Extracranial Segment of Vertebral Artery.There are many therapeutic scheme is available for symptomatic vertebral artery: being applied alone anti- Platelet aggregation drugs carry out secondary prevention, year stroke incidence still be up to 15%;Warfarin treatment and aspirin for treatment are imitated Fruit is suitable, but the risk of bleeding greatly increases;Surgical operation art formula is complicated, and risk is high, is also limited in clinical carry out extensively.Vertebra Arteriarctia is little in medication effect, and surgical risk is excessively high, and limitation is excessive, and endovascular treatment has been increasingly becoming Gesture.
Whole process in vertebral artery can occur for atherosclerotic stenosis, but wherein be issued with vertebral artery from subclavian artery The initial part at place is most commonly seen.In addition, the variation of vertebral artery initial part is more, often there is side vertebral artery advantage, and the other side Vertebral artery is more very thin from the initial segment to intracranial segment, or even the caliber for left and right vertebral artery occur differs nearly 1~2 times or more The case where.Such case after also leading to thinner vascellum laterale Stent Implantation is easier to that restenosis occurs.It is analyzed from histologic characteristics, The vascular wall of vertebral artery initial part contains a large amount of smooth muscles for being rich in elastin laminin, has biggish bounce to bracket.Vertebral artery It itself is almost issued from subclavian artery at right angle, distal end is relatively movable, and proximal end is then fixed by skeletal thorax, and exhaling with thorax Suction activity, these all inevitably cause the fatigue of bracket.Therefore, vertebral artery stent needs higher radial support power, together When also need the fatigue performance and lesion handling capacity of higher level.
Be not exclusively used in the support product for the treatment of vertebral artery narrowing lesion both at home and abroad at present, clinically mostly by intracranial stent or Renal artery stent over adaptation disease uses, but effect is still undesirable.The intracranial stent clinically used, in order to adapt to intracranial vessel Demand is just weak in vertebral artery narrowing treatment, this controls vertebral artery narrowing although flexibility is preferable in terms of support force Commonplace the case where stent fatigue in treatment, treatment will be extremely difficult after fatigue fracture occurs for bracket.Renal artery stenting vertebra Arteriarctia, although support force is relatively suitble to, flexibility is poor, and anatomical structure and the physiology that cannot be well adapted for vertebral artery are special Sign.
In short, the bracket or bracket radial support power in the prior art for vertebral artery is insufficient, rebound, which easily occurs, to be caused Restenosis, discontinuity support insecure;The vertebral artery of bifurcated effectively cannot be supported and be used, and obtained not To effective support biggish vertebral artery of internal diameter, vascular morphology cannot be well adapted for;Or fatigue durability is poor, bracket easily causes long term Safety issue.
Summary of the invention
(1) the technical issues of solving
In view of the deficiencies of the prior art, the present invention provides a kind of vertebral artery stent, have uniform force, firm supporting, Service efficiency and function versatility are improved, the arteria carotis of bifurcated is effectively supported, the biggish vertebra of internal diameter can be supported The advantages that artery or internal diameter different vertebral artery.It is insufficient to solve bracket radial support power, rebound, which easily occurs, leads to restenosis, by Power is uneven, supports insecure;The vertebral artery of bifurcated effectively cannot be supported and be used, and cannot effectively be supported The biggish vertebral artery of internal diameter, cannot be well adapted for vascular morphology;Or fatigue durability is poor, bracket easily causes asking for Long-Term Safety Topic.
(2) technical solution
To realize that above-mentioned bracket radial support power is insufficient, rebound, which easily occurs, leads to restenosis, and discontinuity, support is loosely Gu;The vertebral artery of bifurcated effectively cannot be supported and be used, and cannot effectively support the biggish vertebral artery of internal diameter, It cannot be well adapted for vascular morphology;Or fatigue durability is poor, bracket easily causes Long-Term Safety purpose, and the present invention provides following skill Art scheme: a kind of vertebral artery stent, including the first tilt stand, the side of first tilt stand are fixedly connected with second and incline Tilted supporter, the side of second tilt stand are fixedly connected with the first bifurcated stent, and the side of first bifurcated stent is solid Surely it is connected with the second bifurcated stent, one end of first tilt stand and the second tilt stand is fixedly connected to straight support Bracket, the outer surface of the straight support bracket are fixedly connected with annular expansion bracket, and the side of the annular expansion bracket is solid Surely it is connected with the second expandable stent, the side of second expandable stent is fixedly connected with third expandable stent, and the third expands The side for opening bracket is fixedly connected with the 4th expandable stent, and the side of the 4th expandable stent is fixedly connected with the 5th expansion branch Frame.
Preferably, first tilt stand and the second tilt stand intersecting angle are 35 degree, first bifurcated stent Intersecting angle with the second bifurcated stent is 45 degree.
Preferably, the quantity of first tilt stand and the second tilt stand is several, several described first The outer diameter of tilt stand and the second tilt stand is 0.5 millimeter.
Preferably, the annular expansion bracket includes the first expandable stent, the second expandable stent, third expandable stent, the Four expandable stents and the 5th expandable stent, the expanded outer diameter of first expandable stent are 3.5 millimeters, second expandable stent Expanded outer diameter be 3.8 millimeters, the expanded outer diameter of the third expandable stent is 4.1 millimeters, the expansion of the 4th expandable stent Opening outer diameter is 4.4 millimeters, and the expanded outer diameter of the 5th expandable stent is 4.7 millimeters.
Preferably, first tilt stand, the second tilt stand, the first bifurcated stent, the second bifurcated stent, straight line branch The material for supportting bracket and annular expansion bracket is Nitinol.
Preferably, the quantity of the straight support bracket is ten, and ten straight support brackets are with annular array Form is fixedly connected on one end of the first tilt stand.
Preferably, first tilt stand, the second tilt stand, the first bifurcated stent, the second bifurcated stent, straight line branch The outer surface of support bracket and annular expansion bracket is provided with rapamycin drug.
(3) beneficial effect
Compared with prior art, the present invention provides a kind of vertebral artery stent, have it is following the utility model has the advantages that
1, vertebral artery stent, by the setting of the first tilt stand and the second tilt stand, in the same of support vertebral artery When, which is expanded by external force, and the vertebral artery stent is effectively supported, stress Uniformly, firm supporting.
2, vertebral artery stent, by the setting of the first bifurcated stent and the second bifurcated stent, so that the vertebral artery stent Can the arteria carotis to bifurcated effectively supported, ensured that blood flow is smooth, and then improve the vertebral artery stent Service efficiency.
3, vertebral artery stent, by being equipped with for straight support bracket and annular expansion bracket, so that the vertebral artery Bracket can support the biggish vertebral artery of internal diameter, and then improve the practicability of the vertebral artery stent, so that the vertebral artery stent Uniform force, and functional diversity.
Detailed description of the invention
Fig. 1 is a kind of vertebral artery stent positive structure diagram proposed by the present invention;
Fig. 2 is enlarged structure schematic diagram at A in a kind of vertebral artery stent Fig. 1 proposed by the present invention;
Fig. 3 is enlarged structure schematic diagram at B in a kind of vertebral artery stent Fig. 1 proposed by the present invention;
Fig. 4 is enlarged structure schematic diagram at C in a kind of vertebral artery stent Fig. 1 proposed by the present invention.
In figure: 1, the first tilt stand;2, the second tilt stand;3, the first bifurcated stent;4, the second bifurcated stent;5, straight Line supporting support;6, annular expansion bracket.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
Fig. 1-4, a kind of vertebral artery stent, including the first tilt stand 1 are please referred to, the side of the first tilt stand 1 is fixed It is connected with the second tilt stand 2, by the setting of the first tilt stand 1 and the second tilt stand 2, in the same of support vertebral artery When, which is expanded by external force, and the vertebral artery stent is effectively supported, stress Uniformly, firm supporting, the first tilt stand 1 and 2 intersecting angle of the second tilt stand are 35 degree, the first tilt stand 1 and second The quantity of tilt stand 2 is several, and the outer diameter of several first tilt stands 1 and the second tilt stand 2 is 0.5 milli Rice, the side of the second tilt stand 2 are fixedly connected with the first bifurcated stent 3, and the side of the first bifurcated stent 3 is fixedly connected with the Bifurcated bracket 4 allows the vertebral artery stent to bifurcated by the setting of the first bifurcated stent 3 and the second bifurcated stent 4 Arteria carotis effectively supported, ensured that blood flow is smooth, and then improve the service efficiency of the vertebral artery stent, The intersecting angle of one bifurcated stent 3 and the second bifurcated stent 4 is 45 degree, one end of the first tilt stand 1 and the second tilt stand 2 It is fixedly connected to straight support bracket 5, the quantity of straight support bracket 5 is ten, and ten straight support brackets 5 are with circular array The form of column is fixedly connected on one end of the first tilt stand 1, and the outer surface of straight support bracket 5 is fixedly connected with annular expansion Bracket 6 allows the vertebral artery stent to support internal diameter by being equipped with for straight support bracket 5 and annular expansion bracket 6 Biggish vertebral artery, and then the practicability of the vertebral artery stent is improved, so that the vertebral artery stent uniform force, and function is more Sample, annular expansion bracket 6 include the first expandable stent, the second expandable stent, third expandable stent, the 4th expandable stent and the Five expandable stents, the expanded outer diameter of the first expandable stent are 3.5 millimeters, and the expanded outer diameter of the second expandable stent is 3.8 millimeters, the The expanded outer diameter of three expandable stents is 4.1 millimeters, and the expanded outer diameter of the 4th expandable stent is 4.4 millimeters, the 5th expandable stent Expanded outer diameter is 4.7 millimeters, the first tilt stand 1, the second tilt stand 2, the first bifurcated stent 3, the second bifurcated stent 4, straight Line supporting support 5 and the material of annular expansion bracket 6 are Nitinol, the first tilt stand 1, the second tilt stand 2, first Bifurcated stent 3, the second bifurcated stent 4, straight support bracket 5 and annular expansion bracket 6 outer surface be provided with rapamycin Drug can degrade to the vertebral artery stent by the setting of rapamycin drug.
In conclusion the vertebral artery stent, which passes through the first tilt stand 1 and the second tilt stand 2 Setting enables the vertebral artery stent to be expanded by external force, and make the vertebral artery branch while supporting vertebral artery Frame is effectively supported, uniform force, firm supporting, by the setting of the first bifurcated stent 3 and the second bifurcated stent 4, is made The vertebral artery stent can the arteria carotis to bifurcated effectively supported, ensured that blood flow is smooth, and then improve The service efficiency of the vertebral artery stent, by being equipped with for straight support bracket 5 and annular expansion bracket 6, so that the vertebra is dynamic Pulsation frame can support the biggish vertebral artery of internal diameter, and then improve the practicability of the vertebral artery stent, so that the vertebral artery branch Frame uniform force, and functional diversity.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment Intrinsic element.In the absence of more restrictions, the element limited by sentence " including one ", it is not excluded that including There is also other identical elements in the process, method, article or equipment of the element.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding And modification, the scope of the present invention is defined by the appended.

Claims (7)

1. a kind of vertebral artery stent, including the first tilt stand (1), it is characterised in that: the side of first tilt stand (1) It being fixedly connected with the second tilt stand (2), the side of second tilt stand (2) is fixedly connected with the first bifurcated stent (3), The side of first bifurcated stent (3) is fixedly connected with the second bifurcated stent (4), first tilt stand (1) and second One end of tilt stand (2) is fixedly connected to straight support bracket (5), and the outer surface of the straight support bracket (5) is fixed It is connected with annular expansion bracket (6).
2. a kind of vertebral artery stent according to claim 1, it is characterised in that: first tilt stand (1) and second Tilt stand (2) intersecting angle is 35 degree, and the intersecting angle of first bifurcated stent (3) and the second bifurcated stent (4) is 45 Degree.
3. a kind of vertebral artery stent according to claim 1, it is characterised in that: first tilt stand (1) and second The quantity of tilt stand (2) is several, the outer diameter of several first tilt stands (1) and the second tilt stand (2) It is 0.5 millimeter.
4. a kind of vertebral artery stent according to claim 1, it is characterised in that: the annular expansion bracket (6) includes the One expandable stent, the second expandable stent, third expandable stent, the 4th expandable stent and the 5th expandable stent, the first expandable stent Expanded outer diameter be 3.5 millimeters, the expanded outer diameter of second expandable stent is 3.8 millimeters, the expansion of the third expandable stent Opening outer diameter is 4.1 millimeters, and the expanded outer diameter of the 4th expandable stent is 4.4 millimeters, outside the expansion of the 5th expandable stent Diameter is 4.7 millimeters.
5. a kind of vertebral artery stent according to claim 1, it is characterised in that: first tilt stand (1), second incline Tilted supporter (2), the first bifurcated stent (3), the second bifurcated stent (4), straight support bracket (5) and annular expansion bracket (6) Material is Nitinol.
6. a kind of vertebral artery stent according to claim 1, it is characterised in that: the quantity of the straight support bracket (5) It is ten, ten straight support brackets (5) are fixedly connected on the one of the first tilt stand (1) in the form of annular array End.
7. a kind of vertebral artery stent according to claim 1, it is characterised in that: first tilt stand (1), second incline Tilted supporter (2), the first bifurcated stent (3), the second bifurcated stent (4), straight support bracket (5) and annular expansion bracket (6) Outer surface is provided with rapamycin drug.
CN201910497297.XA 2019-06-10 2019-06-10 A kind of vertebral artery stent Pending CN110063824A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110801320A (en) * 2019-11-15 2020-02-18 郑州美港高科生物科技有限公司 Magnesium alloy renal artery stent

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CN103228232A (en) * 2010-09-27 2013-07-31 爱德华兹生命科学公司 Prosthetic heart valve frame with flexible commissures
CN103417317A (en) * 2013-08-16 2013-12-04 江苏大学 Intravascular stent
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CN105517508A (en) * 2013-07-22 2016-04-20 阿特利姆医疗公司 Implants having expandable regions and methods of making and using same
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CN107510517A (en) * 2017-09-28 2017-12-26 南京微创医学科技股份有限公司 A kind of segment type branch type support
CN107708620A (en) * 2015-06-11 2018-02-16 北京阿迈特医疗器械有限公司 A kind of support of hole-closing structure, preparation method and the usage
CN108784898A (en) * 2018-06-25 2018-11-13 上海理工大学 Encephalic crotch aneurysm holder
US20180325703A1 (en) * 2011-12-06 2018-11-15 Aortic Innovations, Llc Device for endovascular aortic repair and method of using the same
CN210301315U (en) * 2019-06-10 2020-04-14 郑州美港高科生物科技有限公司 Vertebral artery stent

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US6059810A (en) * 1995-05-10 2000-05-09 Scimed Life Systems, Inc. Endovascular stent and method
US6120534A (en) * 1997-10-29 2000-09-19 Ruiz; Carlos E. Endoluminal prosthesis having adjustable constriction
WO2001039699A1 (en) * 1999-12-06 2001-06-07 Advanced Cardiovascular Systems, Inc. Bifurcated stent and method of making
US20040199243A1 (en) * 2001-07-09 2004-10-07 Ofer Yodfat Filtering device and method for a venous furcation
US20080161905A1 (en) * 2002-11-05 2008-07-03 Boston Scientific Scimed, Inc. Asymmetric Bifurcated Crown
US20060178733A1 (en) * 2005-01-21 2006-08-10 Leonard Pinchuk Modular stent graft employing bifurcated graft and leg locking stent elements
CN101917941A (en) * 2007-10-04 2010-12-15 克培拉公司 Medical device with curved struts
CN103228232A (en) * 2010-09-27 2013-07-31 爱德华兹生命科学公司 Prosthetic heart valve frame with flexible commissures
CN201987702U (en) * 2011-01-11 2011-09-28 韩新巍 Airway Y-type single-bullet inner support
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CN107088110A (en) * 2017-06-15 2017-08-25 微创神通医疗科技(上海)有限公司 Vertebral artery stent and preparation method thereof
CN107510517A (en) * 2017-09-28 2017-12-26 南京微创医学科技股份有限公司 A kind of segment type branch type support
CN108784898A (en) * 2018-06-25 2018-11-13 上海理工大学 Encephalic crotch aneurysm holder
CN210301315U (en) * 2019-06-10 2020-04-14 郑州美港高科生物科技有限公司 Vertebral artery stent

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110801320A (en) * 2019-11-15 2020-02-18 郑州美港高科生物科技有限公司 Magnesium alloy renal artery stent
CN110801320B (en) * 2019-11-15 2021-11-30 郑州美港高科生物科技有限公司 Magnesium alloy renal artery stent

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