CN2691626Y - Blood vessel rest special for arteria opening narrow position - Google Patents

Blood vessel rest special for arteria opening narrow position Download PDF

Info

Publication number
CN2691626Y
CN2691626Y CN 200420022329 CN200420022329U CN2691626Y CN 2691626 Y CN2691626 Y CN 2691626Y CN 200420022329 CN200420022329 CN 200420022329 CN 200420022329 U CN200420022329 U CN 200420022329U CN 2691626 Y CN2691626 Y CN 2691626Y
Authority
CN
Grant status
Grant
Patent type
Prior art keywords
end
rod
stent
connecting rod
metal
Prior art date
Application number
CN 200420022329
Other languages
Chinese (zh)
Inventor
罗七一
周顺华
谢志永
张一�
Original Assignee
微创医疗器械(上海)有限公司
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
Grant date

Links

Abstract

The utility model discloses a |blood vessel rest special for arterial opening narrow position, which comprises a plurality of wavy main rings and link rods. Comprising a plurality of wavy units, the main rings are attached as a tubular body by the link rods and the main rings and the link rods are all metal pieces. The near-end and far-end structures of the blood vessel rest are different in that, the metal coverage rate is large at the near-end and little at the far-end. The major advantages of the blood vessel rest are as follows: before being opened the compliance of the far-end is better than that of the near-end, and the overall compliance gradually softens from the near to the far; after being opened the radial strength of the near-end is better than that of the far-end; the end of the near-end can spread completely and be close to the vascular wall with lesion. All these are keys to treat opening lesion.

Description

专用于动脉开口狭窄处的血管支架 Dedicated to the arterial opening narrowing at intravascular stent

技术领域 FIELD

本实用新型涉及一类医疗器械,具体涉及一种用于治疗血管管腔狭窄、阻塞所引起的多种病症的专用于动脉开口狭窄处的血管支架。 The present invention relates to a class of medical equipment, particularly relates to a vascular stent for treating vascular stenosis, dedicated various disorders caused by blockage in the artery at the narrow opening.

背景技术 Background technique

球囊导管扩张和血管腔内支架成形术目前已经成为治疗狭窄血管的首选方法,具有创伤小、恢复快、安全简便等优点。 Endovascular balloon dilatation and stent angioplasty has become the preferred method of treatment of stenosis, with less trauma, fast recovery, the advantages of safe and easy.

现有的血管支架尽管结构设计、材料各具特色,但都有相同的弱点:支架远近部分的单元结构完全相同;扩张前支架远近部分的柔顺性一致;扩张后支架远近部分的径向强度相同且均较弱。 Although conventional blood vessel stent design, unique materials, but have the same weakness: the same as the structure of the distance portion of the bracket means; expanding compliant portion of the bracket before the same distance; strength after the same radial distance expanded portions of the stent and they are weak. 对于开口处发生狭窄的病变,比如肾动脉开口处(图1),支架系统往往需要弯曲近90度才能从腹主动脉进入肾动脉,同时当支架近端伸出肾动脉直接暴露在腹主动脉中时,容易产生血栓等并发症,而且靠近开口处富含钙化的病变往往因为支架近端的径向强度不够而得不到充分扩张。 For opening stenosis lesion such as renal artery opening (FIG. 1), stent often require nearly a 90 degree bend to enter the renal artery from the abdominal aorta, and the abdominal aorta exposed directly to the proximal end of the stent when the renal arteries extending when, prone to complications such as thrombosis, and close to the opening of calcified lesions rich often because the radial strength of the stent proximal end insufficient not fully expanded. 其他如冠脉、椎动脉等开口病变亦有上述相同问题。 Others such as coronary artery, vertebral artery ostial also defined above problems. 针对这种弹性回缩明显的病例,采用远近部分各个性能一致的支架并不能获得理想的疗效。 In view of this significant elastic recoil cases consistent performance of each part of the distance holder and the desired effect can not be obtained.

发明内容 SUMMARY

本实用新型需要解决的技术问题在于提供一种专用于动脉开口狭窄处的血管支架,以克服现有技术存在的上述缺陷。 The present invention technical problem to be solved is to provide a special opening in the artery at the stenosis vascular stent, to overcome the above drawbacks of the prior art.

本实用新型的技术方案如下:一种专用于动脉开口狭窄处的血管支架,包括多个波浪状的主体环、连接杆,所述主体环通过连接杆连接成管状体,主体环包括多个波形单元,所述主体环与连接杆均为金属件,其特征是所述血管支架在近端和远端的结构不同,近端金属覆盖率大,远端金属覆盖率小。 Aspect of the present invention are as follows: a special narrow opening at the arterial vascular stent, comprising a plurality of wavy ring body, connecting rod, said ring body by a connecting rod into a plurality of waveforms of the tubular body, the body comprising a ring means a ring with the connecting rod body is a metal member, characterized in that the vessel support structure in different proximal and distal ends, the proximal end of the large coverage of the metal, the distal end of the small metal coverage.

其中近端指的是靠近球囊导管操作的一端,远端即是远离球囊导管操作的一端。 Wherein the proximal end refers to the end close to the operation of the balloon catheter, i.e. the distal end remote from the balloon catheter is operated.

波形单元的数量从近端到远端逐渐减少。 The number of units waveform gradually decreases from proximal to distal. 或连接杆的数量从近端到远端逐渐减少。 Or the number of the connecting rod is gradually reduced from the proximal end to the distal end.

所述波形单元包括波顶和金属杆,波顶与金属杆通过加强环相连接;血管支架近端的金属杆的宽度可以比远端的宽度大,近端的金属杆壁厚可以比远端粗。 The unit comprises a wave waveform and a top metal rod, the metal rod is connected to the top of the wave through the reinforcing ring; vascular stent proximal end of the width of the metal rod may be larger than the width of the distal end, the proximal end of the metal rod may be longer than the wall thickness of the distal end Crude.

连接杆的形状为直杆或两端与直杆相连的“S”型,但不仅限于这两种结构。 The shape of the connecting rod is connected to both ends of a straight bar or a straight rod "S" shape, but is not limited to these two structures.

连接杆在近端的形状为直杆,在远端的形状为两端与直杆相连的“S”型。 At the proximal end of the connecting rod is a straight rod shape, the shape of the distal end of the rod is connected to both ends of the straight "S" shape.

血管支架是球囊扩张式血管支架。 Vascular stents are balloon-expandable stent.

本实用新型的专用于动脉开口处狭窄的血管支架的主要优点在于:扩张前远端柔顺性较近端好,整体柔顺性由近及远逐渐变软;扩张后近端径向强度较远端强;近端端部能完全张开紧贴病变血管壁,这些都是治疗开口病变的关键。 The present invention is dedicated to a major advantage in that the opening of the artery stent stenosis: Good flexibility before expansion of the distal end of close, the overall flexibility gradually softened from near and far; the expanded radial strength than the proximal end of the distal end strong; proximal end completely open lesions close to the vessel wall, these are the key ostial treatment.

附图说明 BRIEF DESCRIPTION

图1为腹主动脉—肾动脉开口处病变。 Figure 1 is an abdominal aortic - renal artery ostial lesions.

图2为本实用新型的专用于动脉开口狭窄处的血管支架的平面展开结构示意图。 FIG 2 of the present invention is dedicated to the opening plane of the arterial stenosis stent deployment structure diagram.

图3为本实用新型的专用于动脉开口狭窄处的血管支架的一个实施例的平面展开结构示意图。 A planar embodiment of the present invention FIG 3 is dedicated to the stenosis of arterial opening deployment stent structure of FIG.

图4为本实用新型的血管支架的连接杆一个实施例结构示意图示例。 FIG 4 of the present invention the connecting rod stent exemplary embodiment of a schematic structure of embodiment.

图5为本实用新型的血管支架的连接杆一个实施例结构示意图示例。 5 of the present invention the connecting rod stent exemplary embodiment of a schematic structure of embodiment.

具体实施方式 detailed description

下面结合附图详细说明本实用新型的具体实施方式,从图2可以看出本实用新型专用于动脉开口狭窄处的血管支架,包括多个波浪状的主体环1、连接杆,主体环1通过连接杆连接成管状体,主体环1包括多个波形单元7,主体环1及连接杆2均是金属件,血管支架在近端和远端的结构不同,近端金属覆盖率大,远端金属覆盖率小。 The following detailed description of specific embodiments of the invention in conjunction with the accompanying drawings, it can be seen from FIG. 2 of the present invention is dedicated to a vascular stent stenosis arterial opening, comprising a plurality of wavy ring body 1, the connecting rod, the body 1 through the ring a connecting rod connected to the tubular body, the ring body 1 comprises a plurality of waveforms unit 7, the distal end of the body 1 and the ring 2 are connected to a metal rod member, the blood vessel stent proximal and distal different structure, the proximal end of the large metal coverage, small metal coverage. 波形单元或(及)连接杆数量从近端到远端逐渐减少。 Units or the number of waveforms (and) the connecting rod gradually decreases from proximal to distal. 波形单元及连接杆的分布可以有以下几种情况:(a)近端波形单元数量比远端多,分布密度大,连接杆分布密度远近端相同;(b)近端2连接杆数量多,连接杆分布密度大,金属覆盖率较远端高、刚度大,远端3连接杆数量少,连接杆分布密度小,金属覆盖率较近端低、刚度小,而波形单元在远近端的分布密度相同;(c)近端波形单元和连接杆的数量均比远端多,近端波形单元和连接杆的分布密度都比远端大。 Waveform Distribution and connecting rod unit may have the following situations: (a) Number proximal end than the distal end of the waveform section, the distribution density, the connecting rod proximal and density distribution of the same; the number (b) a proximal end 2 a connecting rod, high density distribution of the connecting rod, the distal end of metal coverage than higher stiffness, less score distal connector 3, connecting rod small distribution density, low metal coverage near the end, a small rigidity, while the distribution density of the waveform at the proximal and distal means same; (c) a proximal section and a wave number than the distal end of the connecting rod plurality, the distribution density of the proximal section and waveform than the distal end of the connecting rod big. 采用此三种分布方式的血管支架扩张前远端柔顺性较近端好;扩张后近端径向强度较远端强。 Distal flexibility before distributed manner using these three vascular stent expansion closer to end well; after expansion radial strength than the proximal end of the distal end strong.

由图2可见连接杆可以是直杆4,也可以是两端与直杆5相连的“S”型的弯曲杆6,当然连接杆的形状不仅仅限于这两种结构,也可以为“n”型,也可以如图4所示为双“n”型,也可以如图5所示为多个“n”型相互连接成波浪型。 FIG 2 shows a connecting rod 4 may be straight rods or may be "S" shaped curved rod 6 connected to both ends of the straight rod 5, the connecting rod is of course not limited to the shape of these two structures, may be a "n "type, as illustrated in FIG 4 may be a double" n "type, shown in Figure 5 may be a plurality of" n "type interconnected in a wave type. 连接杆数量从近端到远端逐渐减少。 Decreasing the number of the connecting rod from the proximal end to the distal end.

由图2可见本实用新型血管支架的连接杆可以采用近端是直杆,远端用弯杆的形式。 2 shows a connecting rod of the present invention may be employed in FIG stent proximal end a straight bar, with the distal end of bent rod form. 这样的支架由于远端为弯杆,而且数量少,金属分布密度比近端小,使得扩张前远端柔顺性比近端好。 Such a stent is bent rod since the distal end, and a small number, the distribution density of the metal is smaller than the proximal end, such that the distal flexibility before expansion than the proximal end of the well.

而图3的血管支架是远近端连接杆均为的同样结构的弯曲杆,也可以血管支架的远近端的连接杆均为直杆。 3 and FIG blood vessel stent is bent bar of the same configuration are proximal and distal to the connecting rod, may be proximal and distal stent connecting rods are straight bars.

由图2可见波浪状的主体环的波形单元7包括金属杆、波顶。 2 by waveform ring unit seen in FIG wavy body comprises a metal rod 7, the top wave. 波形单元的波顶和金属杆通过加强环10相连接。 Wave top waveform and the metal rod reinforcing element is connected by a ring 10.

本实用新型近端主体环金属杆宽度8可以比远端主体环金属杆宽度9大,近端金属杆壁厚可以比远端的粗,因此刚度大,远端柔顺性较好。 The present invention proximal body cycloalkyl ring 8 may be metallic rod width than the distal end of the metal rod 9 large width of the body, the proximal end of the distal end of the metal rod than the wall thickness can be coarse, thus stiffness, distal compliance is better.

本实用新型为球囊扩张式血管支架,使用时支架被压握在带有球囊的输送导管上,当支架被送到病变区后,通过球囊充盈液体,球囊体积膨胀,使压握在球囊上的支架直径扩张到预设的尺寸。 The present invention is a balloon-expandable vascular stents, using stent is crimped on a delivery catheter with a balloon, when the stent is sent to the lesion, the balloon by filling a liquid, the volume of the balloon expands the crimping diameter of the stent on the balloon expanded to a preset size.

Claims (9)

  1. 1.一种专用于动脉开口狭窄处的血管支架,包括多个波浪状的主体环、连接杆,所述主体环通过连接杆连接成管状体,主体环包括多个波形单元,所述主体环与连接杆均为金属件,其特征是所述血管支架在近端和远端的结构不同,近端金属覆盖率大,远端金属覆盖率小。 1. A special narrow opening at the arterial vascular stent, comprising a plurality of wavy ring body, connecting rod, said connecting rod body ring by a tubular body, the body comprising a plurality of waveforms ring unit, said ring body the connecting rod is a metal member, characterized in that the vessel support structure in different proximal and distal ends, the proximal end of the large coverage of the metal, the distal end of the small metal coverage.
  2. 2.根据权利要求1所述的血管支架,其特征是所述波形单元的数量从近端到远端逐渐减少。 2. The stent of claim 1, wherein the number of said waveform elements gradually decreases from the proximal end to the distal end.
  3. 3.根据权利要求2所述的血管支架,其特征是所述连接杆的数量从近端到远端逐渐减少。 3. The stent of claim 2, wherein the number of the connecting rod is gradually reduced from the proximal end to the distal end.
  4. 4.根据权利要求1、2或3所述的血管支架,其特征是所述波形单元包括波顶和金属杆,波顶与金属杆通过加强环相连接;血管支架近端的金属杆的宽度比远端的宽度大,近端的金属杆壁厚比远端粗。 4. The vascular stent according to claim 1, 2 or 3, wherein said means comprises a wave waveform and a top metal rod, the metal rod is connected to the top of the wave through the reinforcing ring; width vascular stent proximal end of the metal rod larger than the width of the distal end, the proximal end of the metal rod thicker than the wall thickness of the distal end.
  5. 5.根据权利要求1、2或3所述的血管支架,其特征是所述的连接杆的形状为直杆。 5. The vascular stent according to claim 1, 2 or 3, wherein the shape of said connecting rod is a straight rod.
  6. 6.根据权利要求1所述的血管支架,其特征是所述的连接杆的形状为两端与直杆相连的“S”型。 6. The stent of claim 1, wherein the shape of the connecting rod is connected to both ends of the straight rod "S" shape.
  7. 7.根据权利要求1、2或3所述的血管支架,其特征是所述的连接杆在近端的形状为直杆,在远端的形状为两端与直杆相连的“S”型。 The vascular stent of claim 2 or claim 3, wherein said connecting rod in a proximal end of a straight rod shape, the shape of the distal end of the rod is connected to both ends of the straight "S" type .
  8. 8.根据权利要求1、2或3所述的血管支架,其特征是所述的连接杆在远端和近端的形状为两端与直杆相连的“S”型。 Blood vessel stent according to claim 1, 2 or 3, wherein the shape of said connecting rod is connected to the distal and proximal ends of the straight rod "S" shape.
  9. 9.根据权利要求1所述的血管支架,其特征是所述的血管支架是球囊扩张式血管支架。 9. The stent of claim 1, wherein said vascular stent is a balloon-expandable vascular stent.
CN 200420022329 2004-04-28 2004-04-28 Blood vessel rest special for arteria opening narrow position CN2691626Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200420022329 CN2691626Y (en) 2004-04-28 2004-04-28 Blood vessel rest special for arteria opening narrow position

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200420022329 CN2691626Y (en) 2004-04-28 2004-04-28 Blood vessel rest special for arteria opening narrow position

Publications (1)

Publication Number Publication Date
CN2691626Y true CN2691626Y (en) 2005-04-13

Family

ID=34770323

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200420022329 CN2691626Y (en) 2004-04-28 2004-04-28 Blood vessel rest special for arteria opening narrow position

Country Status (1)

Country Link
CN (1) CN2691626Y (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105167881A (en) * 2015-09-17 2015-12-23 江苏大学 Blood vessel stent resisting to longitudinal deformation
WO2017067396A1 (en) * 2015-10-23 2017-04-27 李雷 Vascular stent
CN107280827A (en) * 2017-07-28 2017-10-24 江苏大学 Intravascular stent with flexibility and longitudinal strength

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105167881A (en) * 2015-09-17 2015-12-23 江苏大学 Blood vessel stent resisting to longitudinal deformation
CN105167881B (en) * 2015-09-17 2018-06-01 江苏大学 Anti-species vascular stent having longitudinal deformation
WO2017067396A1 (en) * 2015-10-23 2017-04-27 李雷 Vascular stent
CN107280827A (en) * 2017-07-28 2017-10-24 江苏大学 Intravascular stent with flexibility and longitudinal strength

Similar Documents

Publication Publication Date Title
US6425855B2 (en) Method for making a multi-laminate stent having superelastic articulated sections
US6264687B1 (en) Multi-laminate stent having superelastic articulated sections
US6235053B1 (en) Tubular stent consists of chevron-shape expansion struts and contralaterally attached diagonal connectors
US6863684B2 (en) Deformable scaffolding multicellular stent
US6488703B1 (en) Helical stent design
US7582111B2 (en) Steep-taper flared stents and apparatus and methods for delivering them
US6551342B1 (en) Embolic filter
US5593417A (en) Intravascular stent with secure mounting means
US20020147489A1 (en) Flexible self-expandable stent using shape memory alloy and method and apparatus for fabricating the same
US6027526A (en) Stent having varied amounts of structural strength along its length
US6723119B2 (en) Longitudinally flexible stent
US6623520B2 (en) Multilayer stent
US7108714B1 (en) Expandable intraluminal endoprosthesis
US7540881B2 (en) Bifurcation stent pattern
US7695507B2 (en) Neurovascular stent and method
US6149682A (en) Luminal endoprosthesis for ramification
US6773455B2 (en) Stent with reinforced struts and bimodal deployment
US6852124B2 (en) Variable strength stent
US6997944B2 (en) Apparatus and method for decreasing stent gap size
US20060217795A1 (en) Fracture-resistant helical stent incorporating bistable cells and methods of use
US6485508B1 (en) Low profile stent
US20030144729A1 (en) Stent with wishbone connectors and serpentine bands
US5782907A (en) Involuted spring stent and graft assembly and method of use
US6419693B1 (en) High strength member for intracorporeal use
US5370683A (en) Vascular stent

Legal Events

Date Code Title Description
C14 Granted
C17 Cessation of patent right