CN104287878A - Blood intra-cavity support - Google Patents

Blood intra-cavity support Download PDF

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CN104287878A
CN104287878A CN 201410471632 CN201410471632A CN104287878A CN 104287878 A CN104287878 A CN 104287878A CN 201410471632 CN201410471632 CN 201410471632 CN 201410471632 A CN201410471632 A CN 201410471632A CN 104287878 A CN104287878 A CN 104287878A
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blood
body
hole
support
stent
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CN 201410471632
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Chinese (zh)
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CN104287878B (en )
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李宝童
杨丽莎
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李宝童
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Abstract

The invention discloses a blood intra-cavity support which comprises a tubular support body. Through holes communicated with the inner side and the outer side are formed in the side wall of the support body. The hole axes of the through holes incline to the axial end of the support body. According to the blood intra-cavity support, the through holes communicated with the inner side and the outer side are formed in the side wall of the support body and the blood can be kept circulated inside and outside the support in a branch blood vessel; meanwhile, the hole axes of the through holes incline to the axial end of the support body, the blood intra-cavity support is placed in the mode that the inner ends of the through holes incline in the blood flow direction, the blood is prevented from directly impacting the blood vessel intima, the blood is promoted to flow in the support in a layered mode, vortexes are not generated in the through holes, damage caused by blood flow to the blood vessel intima is greatly reduced, and the blood vessel intima is well protected. Meanwhile, due to the fact that most of the blood vessel intima is not covered at the portion where the blood intra-cavity support is implanted, partial blood vessel endothelium still maintains the functions, interference caused by the support in the functions of the endothelium is reduced, and the good treatment effect is achieved.

Description

血管腔内支架 Endovascular stent

技术领域 FIELD

[0001] 本发明涉及一种医疗器械,尤其涉及一种血管腔内支架。 [0001] The present invention relates to a medical instrument, particularly to an endovascular stent.

背景技术 Background technique

[0002] 血管支架是在病变血管置入内支架以达到支撑狭窄闭塞段血管、扩大血管真腔、隔绝病变,减少血管弹性回缩及再塑形,保持管腔血流通畅的目的。 [0002] The stent is a vascular stent placed in the diseased vessel segment to achieve vascular occlusive support, expansion vessel true lumen, isolated lesions, reducing the recoil and vascular remodeling, maintaining blood flow lumen purposes. 利用腔内隔绝原理的微创介入治疗技术,它是用一套管径较细的输送系统,将被压缩状态的带支撑的支架送达血管病变位置,在准确定位后,将其释放并撑开病变血管,支架一般有覆膜支架和裸支架两种,现有技术中的裸支架多为丝网结构,网孔处血液流动依然对血管内膜造成较大的冲击,对内膜的保护性较差,治疗效果不佳;覆膜支架隔绝病变效果较为可靠,但是存在阻塞分支血管、内漏、破坏局部血管内皮功能等难以解决的问题,目前尚未有效、便捷的技术解决这些问题。 Using minimally invasive endovascular exclusion principles of interventional therapy, it is a smaller diameter delivery system, the compressed state with the support stent delivery position vascular lesions, after accurate positioning, support and release it open coronary arteries, stents are generally two kinds of bare stent and stent-graft, the prior art mostly bare stent mesh structure, the mesh of the blood flow is still caused a greater impact on the intima, the intimal protection poor, poor treatment; stent-graft disease isolated effect is more reliable, but the presence of the branch vessel occlusion, endoleak, partial destruction of difficult issues endothelial function, is not yet effective, and convenient technique to solve these problems.

发明内容 SUMMARY

[0003] 有鉴于此,本发明的目的是提供一种血管腔内支架,能保持血液在支架内外的流通,同时大大降低血液流动对血管内膜造成的损伤,提高对血管内膜的保护性,达到较好的治疗效果。 [0003] In view of this, an object of the present invention is to provide an endovascular stent, inside and outside of the stent to maintain blood flow while significantly reducing damage to the intima of blood flow caused by improved protection of neointimal to achieve better therapeutic effect.

[0004] 本发明的血管腔内支架,包括管状的支架本体,所述支架本体的侧壁设有内外相通的通孔;所述通孔的孔心线向支架本体轴向一端倾斜; [0004] The endovascular stent of the present invention, comprises a tubular body of the stent, the stent body is provided with a through hole side wall inside and outside communication; hole center line of the through hole axially to one end of the stent body is inclined;

[0005] 进一步,所述通孔沿支架本体周向和轴向均匀布置多个,各通孔的孔心线倾斜方向一致; [0005] Further, the through hole in the bracket body circumferentially and axially arranged in a plurality of uniform, consistent hole center line in the inclination direction of each through hole;

[0006] 进一步,所述支架本体包括由回弹性板材卷曲而成的管状体; [0006] Further, the crimped stent body comprising an elastic sheet made by the return of the tubular body;

[0007] 进一步,所述支架本体还包括固定于管状体内壁的用于辅助回弹的条形回弹块; [0007] Further, the bracket body further comprises a tubular body fixed to a wall block for auxiliary rebound resilience of the strip;

[0008] 进一步,所述条形回弹块沿管状体周向设置并且条形回弹块内侧面对应管状体轴向两侧边缘导圆角; [0008] Further, the resilient strip-shaped block disposed circumferentially along the tubular body and the inner face of the strip to be resilient block axially opposite side edges of the tubular body fillet;

[0009] 进一步,所述回弹性板材卷曲形成搭接边部,该搭接边部的内搭接边外侧面及外搭接边内侧面设有相匹配的用于阻碍回弹性板材回卷的锁扣; [0009] Further, the resilient plate overlapping edge curl is formed, the inner edge portion overlapping the overlapping edge overlapping the outer side surface and the outer side edge is provided for blocking matched resilient sheet rewound lock;

[0010] 进一步,所述内搭接边的边缘设有用于将管状体回卷的操作孔;所述操作孔的孔心线沿管状体轴向设置。 [0010] Further, the inner edges of the overlapping edges is provided with holes for the operation of rewinding the tubular body; hole center line of the operation hole provided along the axial direction of the tubular body.

[0011] 本发明的有益效果是:本发明的血管腔内支架,支架本体的侧壁设有内外相通的通孔,在分支血管处能保持血液在支架内外的流通,同时通孔的孔心线向支架本体轴向一端倾斜,将血管腔内支架以通孔内端朝血液流向倾斜的方式放置,避免了血流直接冲击血管内膜,且促进血液在支架内以层流的形式流动,不在通孔处产生涡流,大大降低血液流动对血管内膜造成的损伤,提高对血管内膜的保护性;同时因血管腔内支架植入处大部分血管内膜未被覆盖,局部血管内皮仍维持自身功能,减小了支架对内皮功能的干扰;由于血流冲击斜向的通孔后,产生扩张血管的力,有利于支架与相应节段的血管紧密贴服;由于斜向的通孔的设计,使进入支架与血管之间的血液易于回流入支架管腔内,减小了支架外、内的压差,避免了覆膜支架的并发症“内漏”的 [0011] Advantageous effects of the present invention are: endovascular stent according to the present invention, the stent body side wall a through hole communicating inside and outside, the branch blood vessel outside the stent to maintain blood flow, while the center hole of the through hole placing one end of the wire stent body is inclined to the axial direction of the endovascular stent to the blood flow towards the end of the through-hole is inclined manner, avoiding the direct impact of the intima of blood flow, and improves blood flow to laminar flow within the stent, eddy current is generated not through holes, greatly reduce damage to the intima of blood flow caused by the increased protection of the vascular intima; the same as most of the vascular intima endovascular stent uncovered local vascular endothelium still maintain their function, reduces interference stent on endothelial function; since the impact of blood flow oblique through hole, a force vasodilation, vascular stents and facilitate the corresponding segments serving tightly; as oblique through hole design, so that between the bracket and into the blood vessel back into the stent lumen easily, reducing the outer armature, the inner pressure, avoiding the complications of stent-graft "endoleak" in 生条件;由于通孔密集排列,通孔之间的间隔薄且具有良好的柔韧性,当支架需要屈曲时,可以通过压缩小弯侧通孔的管径及拉伸大弯侧通孔的管径而易于达到,且支架的腔内面始终保持平滑而无皱褶。 Health conditions; densely arranged because the through hole, the spacer is thin and has good flexibility, when the stent buckling need to be compressed by the diameter of the through hole of the lesser curvature and the greater curvature stretched through-hole of the pipe between the through hole diameter and readily accessible, and the inner face of the holder is always maintained smooth without wrinkles. 通过以上机制从而达到较好的治疗效果。 Through the above mechanism so as to achieve better therapeutic effect.

附图说明 BRIEF DESCRIPTION

[0012] 图1为本发明的结构示意图; [0012] FIG. 1 is a schematic view of the structure of the present invention;

[0013] 图2为本发明的横截面结构示意图; [0013] FIG. 2 is a schematic cross-sectional structure of the schematic diagram of the invention;

[0014] 图3为本发明的单侧壁纵截面结构示意图。 Single side wall [0014] Figure 3 is a schematic longitudinal sectional structure of the invention.

具体实施方式 Detailed ways

[0015] 图1为本发明的结构示意图;图2为本发明的横截面结构示意图;图3为本发明的单侧壁纵截面结构示意图,如图所示:本实施例的血管腔内支架,包括管状的支架本体,所述支架本体的侧壁设有内外相通的通孔I ;所述通孔I的孔心线向支架本体轴向一端倾斜,能保持血液在支架内外的流通,同时将血管腔内支架以通孔I内端朝血液流向倾斜的方式放置,使血液在血管腔内支架内以层流的形式流动,不在通孔I处产生涡流,大大降低血液流动对血管内膜造成的损伤,提高对血管内膜的保护性,达到较好的治疗效果。 [0015] FIG. 1 is a schematic structural diagram of the present invention; FIG. 2 a cross-sectional schematic view of the present invention; FIG. 3 of the present invention, the single side wall structure is a vertical schematic sectional view, as shown in FIG: endovascular stent according to the present embodiment , includes a tubular stent body, the stent body is provided with inner and outer side walls of the through holes communicating I; the via hole center line I of an axial end of the stent body is inclined, the blood flow can be maintained inside and outside of the stent, while the endovascular stent to the inner end of the through hole toward the blood flow I is placed in an inclined manner, the blood flow in a laminar flow within the endovascular stent, not at the eddy current I through holes, greatly reduce blood flow to vascular endothelium damage caused by improved protection of vascular endothelium, to achieve better therapeutic effect.

[0016] 本实施例中,所述通孔I沿支架本体周向和轴向均匀布置多个,各通孔I的孔心线倾斜方向一致,通孔I的密度根据需要合理设置,布置多个通孔I能满足支架本体内外的通透性,减小对血管内膜的覆盖,以保持血液在支架内外的流通。 [0016] In this embodiment, the through hole in the bracket body I circumferentially and axially arranged in a plurality of uniform, consistent hole center line is inclined in the direction I through holes, the density of the through holes provided reasonable I needed, multiple arrangement I through holes to meet the permeability of the inner and outer stent body, to reduce the footprint of the intima to maintain blood flows inside and outside the stent.

[0017] 本实施例中,所述支架本体包括由回弹性板材卷曲而成的管状体2,便于支架本体的制作及通孔I的加工,降低制作成本,同时可将支架本体收卷成直径较小的筒状后使用专用器具将其夹紧,然后送至血管内的相应位置释放,利用回弹性板材的回弹性能膨开支撑于血管内壁,便于操作。 [0017] In this embodiment, the crimped stent body comprises a tubular resilient body 2 made of sheet material, ease of fabrication and processing the through hole of the stent body I, reduce production costs, while the diameter of the stent body into a winding smaller cylindrical specialty tool use to clamp, release and then sent to the appropriate location within the blood vessel, using a resilient sheet material supported by the resilience performance of open expansion vessel wall, easy to operate.

[0018] 本实施例中,所述支架本体还包括固定于管状体2内壁的用于辅助回弹的条形回弹块3,进一步保证支架本体的回弹性能,增大对血管内壁的支撑力,保证治疗效果,同时使血管腔内支架定位稳定;条形回弹块3在支架本体轴向两端端部各布置一个,也可根据回弹性需要再在支架本体中部沿轴向均布多个,通过在支架本体轴向两端端部设置条形回弹块3能使支架本体轴向两端端部紧贴于血管内壁,抵抗血流冲击作用,避免血管腔内支架与血管剥离。 [0018] In this embodiment, the bracket body further comprising a resilient strip fixed to the block of resilient inner wall for assisting the tubular body 3, to further ensure the resilience performance of the stent body to increase the support of the blood vessel wall force, to ensure treatment, while endovascular stent positioning stability; bar block 3 is axially resilient respective ends thereof arranged in a stent body, but also need to be uniform in the middle of the bracket body along an axial resilience a plurality, in the stent body by an axial end portion provided at both ends of the strip can spring back block 3 stent body axial ends thereof in close contact with the inner wall of a blood vessel, the blood flow resistance to impact action, to avoid peeling endovascular stent and vessel .

[0019] 本实施例中,所述条形回弹块3沿管状体2周向设置并且条形回弹块3内侧面对应管状体2轴向两侧边缘导圆角;对血液流动具有一定的导向功能,降低对血液的阻碍,使血液在血管腔内支架内以层流的形式流动。 [0019] In this embodiment, the resilient strip 2 and the strip-shaped resilient circumferentially disposed inside the block 3 of the tubular body facing the edge fillet to be axial sides of the block 2 along the tubular body 3; having blood flow certain guiding function, reduced obstruction of the blood, the blood flow in a laminar flow within the endovascular stent.

[0020] 本实施例中,所述回弹性板材卷曲形成搭接边部,该搭接边部的内搭接边4外侧面及外搭接边5内侧面设有相匹配的用于阻碍回弹性板材回卷的锁扣6,阻碍回弹性板材回卷是指回弹性板材膨开形成管状体2后产生一定的保持力,使管状体2结构相对稳定,内搭接边4外侧面指内搭接边4沿管状体2径向向外的一侧面,外搭接边5内侧面是指外搭接边5沿管状体2径向向内的一侧面,通过管状体2自身的回弹性能使内搭接边4和外搭接边5紧压在一起,锁扣6为能够啮合的齿形结构,进而利用锁扣6的啮合阻碍回弹性板材回卷,使回弹性板材膨开后结构稳定,通过锁扣的调节,依血管管腔的变化,调节支架管径的大小,达到充分扩张、支撑血管的目的;锁扣可以有效防止支架回弹,保证支架支撑效果。 [0020] In this embodiment, the resilient plate overlapping edge curl is formed, the inner edge portion overlapping the overlapping edge of an outer surface 4 and an outer side surface 5 provided with overlapping edges match for blocking back resilient latch plate 6 rewound, rewinding hinder the resilient plate means resiliently expandable opening plate formed after a certain holding force of the tubular body 2, the tubular body 2 structure is relatively stable, the inner lap side means the outer edge 4 overlapping edge 4 along a side surface of the tubular body 2 radially outwardly, the outer edge of the lap side refers to a side surface 5 radially inwardly of the outer tubular member along the overlapping edges 5 2, 2 by its own resilient tubular body after the overlapping edges can overlap the outer edges 5 and 4 pressed together, the latching serration 6 is capable of engaging, and further use of the latch 6 engaging the resilient sheet rewinding hinder the resiliently expandable opening plate structural stability by adjusting clasp, according to the change in the vessel lumen, adjust the size of the diameter of the stent, to achieve full expansion, the purpose of supporting the blood vessel; resilient latch holder can be effectively prevented, to ensure that the effect of the support bracket.

[0021] 本实施例中,所述内搭接边4的边缘设有用于将管状体2回卷的操作孔7 ;所述操作孔7的孔心线沿管状体2轴向设置,可使用类似于镊子的工具通过操作孔7将回弹性板材收卷起来,便于血管腔内支架的放置和取出。 [0021] In this embodiment, the overlapping edges of the inner side 4 of the aperture 2 is provided for operation of rewinding the tubular body 7; the operation hole hole center line 7 of the tubular body 2 is provided along the axial direction, can be used tools like tweezers resilient sheet 7 by the operation of winding up the hole, to facilitate endovascular stent placement and removal.

[0022] 最后说明的是,以上实施例仅用以说明本发明的技术方案而非限制,尽管参照较佳实施例对本发明进行了详细说明,本领域的普通技术人员应当理解,可以对本发明的技术方案进行修改或者等同替换,而不脱离本发明技术方案的宗旨和范围,其均应涵盖在本发明的权利要求范围当中。 [0022] Finally is noted that, the above embodiments are intended to illustrate and not limit the present invention, although the present invention has been described in detail with reference to preferred embodiments, those of ordinary skill in the art should be understood that the present invention technical solution modifications or equivalent replacements without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the present invention as claimed in which the required range.

Claims (7)

  1. 1.一种血管腔内支架,其特征在于:包括管状的支架本体,所述支架本体的侧壁设有内外相通的通孔;所述通孔的孔心线向支架本体轴向一端倾斜。 An endovascular stent comprising: a tubular stent body, the stent body sidewall of a through hole communicating inside and outside; hole center line of the through hole axially to one end of the stent body is inclined.
  2. 2.根据权利要求1所述的血管腔内支架,其特征在于:所述通孔沿支架本体周向和轴向均匀布置多个,各通孔的孔心线倾斜方向一致。 The endovascular stent according to claim 1, characterized in that: said through-hole in the bracket body circumferentially and axially arranged in a plurality of uniform, consistent hole center line direction of the inclined through-holes.
  3. 3.根据权利要求1所述的血管腔内支架,其特征在于:所述支架本体包括由回弹性板材卷曲而成的管状体。 The endovascular stent according to claim 1, wherein: said stent body comprises a coiled sheet made of a resilient tubular body.
  4. 4.根据权利要求3所述的血管腔内支架,其特征在于:所述支架本体还包括固定于管状体内壁的用于辅助回弹的条形回弹块。 4. The endovascular stent according to claim 3, wherein: said body further comprises a bar-shaped resilient bracket fixed to the block wall of the tubular body for assisting rebound.
  5. 5.根据权利要求3所述的血管腔内支架,其特征在于:所述条形回弹块沿管状体周向设置并且条形回弹块内侧面对应管状体轴向两侧边缘导圆角。 The endovascular stent according to claim 3, wherein: said resilient strip block disposed circumferentially along the tubular body and the inner face of the strip to be resilient block axially of the tubular body on both sides of the rounded edge angle.
  6. 6.根据权利要求3所述的血管腔内支架,其特征在于:所述回弹性板材卷曲形成搭接边部,该搭接边部的内搭接边外侧面及外搭接边内侧面设有相匹配的用于阻碍回弹性板材回卷的锁扣。 The endovascular stent according to claim 3, wherein: the resilient plate is formed overlapping edges curl portion, an outer edge of the overlap of the overlapping inner and outer side edge portion overlapping side edges provided there used to match hinder resilient sheet roll back the catch.
  7. 7.根据权利要求6所述的血管腔内支架,其特征在于:所述内搭接边的边缘设有用于将管状体回卷的操作孔;所述操作孔的孔心线沿管状体轴向设置。 7. endovascular stent according to claim 6, wherein: said inner edge overlapping the edge of the operation hole is provided for rewinding the tubular body; hole center line of the operation hole along the axis of the tubular body to set up.
CN 201410471632 2014-09-16 2014-09-16 Endovascular stent CN104287878B (en)

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