CN103431931B - Pulmonary artery and pulmonary valve replacement stent device having the stent pulmonary - Google Patents

Pulmonary artery and pulmonary valve replacement stent device having the stent pulmonary Download PDF

Info

Publication number
CN103431931B
CN103431931B CN 201310257705 CN201310257705A CN103431931B CN 103431931 B CN103431931 B CN 103431931B CN 201310257705 CN201310257705 CN 201310257705 CN 201310257705 A CN201310257705 A CN 201310257705A CN 103431931 B CN103431931 B CN 103431931B
Authority
CN
Grant status
Grant
Patent type
Prior art keywords
pulmonary
stent
pulmonary artery
grid
section
Prior art date
Application number
CN 201310257705
Other languages
Chinese (zh)
Other versions
CN103431931A (en )
Inventor
曾敏
周达新
张启明
Original Assignee
杭州启明医疗器械有限公司
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

本发明公开了一种肺动脉支架及具有该肺动脉支架的肺动脉瓣膜置换装置,所述肺动脉支架,包括管状的支撑网架,以及连接在支撑网架轴向两端且径向膨胀呈扩口的流入段和流出段,所述的支撑网架邻近流出段部位具有绕周向分布的若干第一单元格,所述的流出段由绕支撑网架周向依次分布的若干定位条构成,每个定位条的中部朝流出方向折弯,每个定位条的两端与相间隔的两个第一单元格的顶点相连接。 The present invention discloses a pulmonary artery and pulmonary valve replacement stent device having the stent of the pulmonary artery, the pulmonary artery stent, comprising a tubular supporting grid, and the grid connected to the supporting axial ends and radially expanded shape flared inflow section and the outflow section, said support grid portion adjacent the outflow section having a first plurality of circumferentially around the cell distribution of the outflow section is constituted by a plurality of circumferentially about the support grid distribution strip is positioned successively, each positioning Article outflow direction towards the middle of the bend, the apex of the two ends of the first cells spaced positioning of each bar is connected. 所述的肺动脉瓣膜置换装置,包括所述的肺动脉支架,以及固定在所述支撑网架内部的假体瓣膜。 The pulmonary valve replacement device, comprising the pulmonary stents, prosthetic valve and secured to the support of the inner grid. 本发明的肺动脉支架,不易对血管造成伤害,且对血流的阻挡作用较小。 Pulmonary artery stent of the present invention, damage to the blood vessel easily and with less effect on blood flow barrier.

Description

肺动脉支架及具有该肺动脉支架的肺动脉瓣膜置换装置 Pulmonary artery and pulmonary valve replacement stent device having the stent pulmonary

技术领域 FIELD

[0001] 本发明涉及医疗器械技术领域,尤其涉及一种肺动脉支架及具有该肺动脉支架的肺动脉瓣膜置换装置。 [0001] The present invention relates to the technical field of medical devices, particularly to a pulmonary artery and pulmonary valve replacement stent device having the stent of the pulmonary artery.

背景技术 Background technique

[0002] 右室流出道狭窄的青紫型先天性心脏病患者,需要在婴幼儿或儿童早期施行体外循环下开胸心脏纠治术。 [0002] cyanotic congenital heart disease in patients with right ventricular outflow tract obstruction, we need to perform open heart surgery under cardiopulmonary bypass in the repair of the infant or early childhood.

[0003] 在右室流出道狭窄的青紫型先天性心脏疾病中最常见的是法洛式四联症(T0F)。 [0003] In the right ventricular outflow tract stenosis cyanotic congenital heart disease is the most common type tetralogy of Fallot (T0F). 上海儿童医学中心资料显示TOF手术最常见病人年龄为6个月〜3岁,这个年龄阶段手术病人占总手术人数的74%。 Shanghai Children's Medical Center TOF data show that the most common surgical patients age 6 months ~ 3 years old, this age group accounted for 74% of the number of patients undergoing surgery. 经典手术包括VSD修补,右室流出道梗阻和肺动脉(瓣环与瓣膜)狭窄解除。 Classical procedures include repair VSD, right ventricular outflow tract and pulmonary artery (the valve annulus) stenosis is released.

[0004] 通常,大部分法洛式四联症合并肺动脉瓣上狭窄(肺动脉主干与左右肺动脉分枝狭窄),主要采用自右室流出道(RVOT)跨肺动脉瓣至肺动脉主干(MPA)和左右肺动脉分枝(LPA与RPA)补片扩大成型术。 [0004] Generally, narrow (left pulmonary artery branches and pulmonary artery stenosis) over most of formula tetralogy of Fallot pulmonary valve, mainly from the right ventricular outflow tract (the RVOT) across the pulmonary valve to the pulmonary artery (MPA) and left and right pulmonary branch (LPA and RPA) expansion patch angioplasty. 上海儿童医学中心资料显示:1999年4月至2011年12月,所有TOF手术病人记录抽调1999年、2000年、2001年、2002年、2003年、2005年、2007年、2009年、2011年合计9年统计数共1851例,其中做了此类补片扩大成型术有1569例,占总数84.76%ο Shanghai Children's Medical Center data show: April 1999 to December 2011, all TOF surgery patient records transferred in 1999, a total of 2000, 2001, 2002, 2003, 2005, 2007, 2009, 2011 9-year statistics were 1851 cases, which made such a patch expand angioplasty has 1569 cases, accounting for 84.76% ο

[0005] 手术中使用的补片,并不能顺应人体的生长,很容易产生再次狭窄或瓣膜病变,且随着年龄的增长,病情会越来越重。 Patch [0005] for use in surgery, and can not adapt to the body's growth, it is prone to restenosis or valvular disease, and with age, the condition will become increasingly important. 另外,由于无瓣膜,术后会并发严重的肺动脉返流(PR)。 In addition, since no valves, surgery may be complicated by severe pulmonary regurgitation (PR). 重度的PR会导致右心室容量负荷大量增加,长期以往会造成右心室腔扩大,随之右心室收缩排血功能下降,患者运动耐量明显下降,甚至出现心率失常。 Severe PR leads to a significant increase in right ventricular volume overload, the right ventricle will result in a conventional long cavity to expand, followed by right ventricular systolic ejection function decline, decreased exercise tolerance in patients, even arrhythmia. 国外研究资料提示当右心室舒张末容量/体表面积(RV EDV Index) > 150ml/m2时,患者甚至会发生猝死。 Foreign research data suggest that when the right ventricular end diastolic volume / body surface area (RV EDV Index)> 150ml / m2, the patient or even sudden death. 因此,患者需要接受再次开胸手术置入新的人工肺动脉瓣。 Therefore, patients need to undergo open heart surgery into new artificial pulmonary valve. 但是二次或二次以上手术不但手术难度大,且有较高的危险性和死亡率。 But more secondary or secondary surgery not only surgery is difficult, and there is a high risk and mortality.

[0006] 应用介入治疗方式植入肺动脉瓣膜置换装置不仅有效终止了肺动脉的大量返流,改善肺组织血液循环与右心室功能达到了治疗目的,并避免了再次开胸手术。 [0006] interventional therapy of pulmonary valve replacement implanted device not only effectively terminate a large number of regurgitation of pulmonary artery, to improve blood circulation and lung tissue of right ventricular function achieve therapeutic purposes, and to avoid the re-thoracic surgery.

[0007] 现有技术中的肺动脉瓣膜置换装置,由记忆金属材料制成的网状支架,以及缝制在该支架内的可单向开放的三叶瓣膜构成,图10显示了一种现有的肺动脉瓣膜置换装置的肺动脉支架,呈网状的马鞍形圆筒结构,网状结构由规则的菱形组成,该肺动脉支架位于肺动脉靠近肺动脉分支的一端端部为周向分布的菱形的顶部,尖锐且致密,在支架释放过程中,尖锐的顶部极易戳破血管,增加了手术难度和手术风险,另外肺动脉支架该处菱形组成致密,对血流的阻挡作用强,影响了肺动脉的血流顺畅的流出到左右肺动脉分支内。 [0007] The prior art apparatus of pulmonary valve replacement, mesh stent made of a memory metal material, and sewn in the holder can be one-way valve open clover configuration, FIG. 10 shows a prior pulmonary valve replacement device pulmonary stents, cylindrical saddle reticular structure, mesh structure composed of regular diamond, which is located in the pulmonary artery stent pulmonary a portion close to the end to end to the pulmonary artery branches to the top of the circumferential distribution of the diamond, a sharp and dense, the stent delivery process, the top sharp easily puncture a blood vessel, increasing the difficulty and surgical risk surgery, where the stent further pulmonary rhombuses dense, strong barrier effect on blood flow, the blood flow in the pulmonary artery smooth impact pulmonary artery outflow branch into the left and right.

发明内容 SUMMARY

[0008] 本发明提供了一种肺动脉支架,不易对血管造成伤害,且对血流的阻挡作用较小。 [0008] The present invention provides a pulmonary artery stent, vascular damage is not easy, and less effect on the blocking of blood flow.

[0009] 一种肺动脉支架,包括管状的支撑网架,以及连接在支撑网架轴向两端且径向膨胀呈扩口的流入段和流出段,所述支撑网架邻近流出段部位具有绕周向分布的若干第一单元格,所述的流出段由绕支撑网架周向依次分布的若干定位条构成,每个定位条的中部朝流出方向折弯,每个定位条的两端与相间隔的两个第一单元格的顶点相连接。 [0009] A pulmonary artery stent, comprising a tubular supporting grid, and the inflow section and the outflow section connected to the support grid axial ends and radially expanding flared shape, said support grid having about a portion near the outflow section a first plurality of circumferentially distributed cells, the outflow from the paragraph about the support grid of circumferential distribution of several pieces successively positioned, the central strip is bent toward each positioning outflow direction, and both ends of each positioning bar the first two vertices spaced cells connected.

[0010] 肺动脉支架在人体内膨胀后,支架(肺动脉支架)的径向支撑力能够使其固定在血管内壁上,此时,肺动脉支架的流入段位于右室流出道,而流出段大体位于主肺动脉邻近肺动脉分支的部位,流入段和流出段均呈扩口,使得肺动脉支架植入后不易随心脏的运动向下移位,而每个定位条的中部均朝流出方向折弯,能够使支架有效的支撑在主肺动脉位置。 [0010] Pulmonary stent body after expansion, the stent radial force (the pulmonary artery stent) can be so fixed on the inner wall of the blood vessel, then, flows into the pulmonary artery stent segment in the right ventricular outflow tract, generally located in the main section and the outflow the pulmonary artery near the pulmonary artery branch portion, the inflow and outflow sections showed a flared section, so that the pulmonary artery after stent implantation with easily shifted downward motion of the heart, and the middle of each strip are positioned bent toward the outflow direction, the stent can be effective support position in the main pulmonary artery. 对流出段进行特殊设计后,定位条与支撑网架之间能够形成镂空区域,而定位条的两端与相间隔的两个第一单元格的顶点相连接,不仅所需定位条的数量少,且镂空区域的面积更大,降低了支架对血流造成的阻力,保证血流畅通的从主肺动脉流入肺动脉分支,且该结构的流出段不易戳破主肺动脉或肺动脉分支。 After a small number of special design outflow segment, between the lock bar and the support grid can be formed hollow region, and both ends of the lock bar with the two first cells connected vertices spaced apart, not only the desired positioning strip and the hollow region of a larger area, reducing the resistance to blood flow caused by the stent, to ensure the smooth flow of blood flowing into the pulmonary artery branches from the main pulmonary artery, and out of segments of the structure is less likely to puncture the main pulmonary artery or pulmonary artery branches.

[0011] 优选的,所述的流出段在支撑网架轴向上的延伸长度小于等于流入段。 [0011] Preferably, the length of the outflow section extending in the axial direction of the support grid less inflow section. 流出段在支撑网架轴向上的延伸长度较短,进一步降低了对血流的阻挡作用,也有效的防止了流出段戳伤血管。 Extending the length of the outflow section in the axial direction of the support grid is short, further reducing the effect of blocking the blood flow, but also effectively prevent the outflow of the blood vessel segment stab wounds. 优选的,所述的流出段在支撑网架轴向上的延伸长度与流入段之比为1:1〜 Preferably, the ratio of the length of the outflow section extending in the axial direction of the support grid of the inflow section is 1: 1 ~

2.5ο 2.5ο

[0012] 通常,与定位条相连的两个第一单元格之间间隔的第一单元格数量越多,镂空区域的面积越大,但是支架定位的稳固性会受到一定的影响,因此,优选的,所述相间隔的两个第一单元格之间间隔有一个第一单元格。 [0012] Generally, the more the number of the first cell spacing between the first two cells connected to the positioning bar, the larger the area of ​​the hollow region, but the stability of the stent will be located a certain extent, it is preferable , the spacing between two of said first cells spaced apart with a first cell.

[0013] 进一步优选的,每个定位条与支撑网架之间围成镂空区域,所述的镂空区域由W形的底边以及由定位条限定的顶边围成,定位条的两端跨接在W形底边的两端点处。 [0013] Further preferably, each enclosed between the lock bar and the support grid into the hollow region of the hollow base region by the W-shape defined by the positioning and the top sides surrounded, the two ends across the lock bar contact points at both ends of the W-shaped base.

[0014] 第一单元格的形状并无严格要求,可为菱形、椭圆形、不规则形状等,由于支架在未释放前处于压缩状态,为提高支架的压缩性能,第一单元格可采用菱形。 Shape [0014] The first cell is not critical, may be diamond shaped, oval, irregular, etc., since the stent is not released before the compressed state, to improve compression performance of the stent, the first cell may employ rhombic .

[0015] 优选的,所述的定位条折弯成钝角或圆弧形。 [0015] Preferably, the retaining strip is bent at an obtuse angle or an arc shape. 与锐角和直角相比,钝角或圆弧形的定位条不易戳破血管,能够更有效的避免支架对血管造成伤害。 Compared with acute and right angles, obtuse or arcuate lock bar easily puncture a blood vessel, the stent can be more effectively prevent damage to the blood vessels.

[0016] 优选的,所有的定位条均包裹膜层。 [0016] Preferably, all of the positioning bars are wrapped in film. 膜层可采用猪心包膜或其他柔软膜制成,可进一步避免定位条对血管造成伤害。 Layer can be made of porcine pericardium or other flexible film strip may be positioned to avoid further injury to the blood vessel.

[0017] 优选的,所述流入段的口径大于流出段的口径。 [0017] Preferably, the diameter is greater than the diameter of the inflow section to the outflow section. 不仅符合病人的生理解剖结构,还能防止瓣膜向主肺动脉流动。 Not only in the physiological anatomy of the patient, but also to prevent the flow valve to the main pulmonary artery. 可以理解,该处口径均以各自直径最大处为基准。 It is understood that there are in each caliber maximum diameter at the basis.

[0018] 进一步优选的,所述流出段与流入段的口径比为1:1.05〜1.5。 [0018] Further preferably, the aperture ratio of the inflow section and the outflow section is 1: 1.05~1.5.

[0019] 优选的,所述流入段的端部具有绕周向分布的若干第二单元格,第二单元格的数量大于定位条。 [0019] Preferably, the end portion of the inflow section having a second plurality of circumferentially around the cell distribution, the number of cells is greater than the second positioning strip. 定位条的数量少,使得流入段的结构稀疏,减弱支架对血流的阻挡作用。 Positioning a small number of strips, such that the inflow section of the sparse structure, weakening the stent to the blood flow blocking effect.

[0020] 为便于将支架固定在输送系统上,所述第二单元格的顶点带有连接件。 [0020] In order to facilitate stent delivery system is fixed to the vertex of the second cell with a connecting member.

[0021] 优选的,位置相对的两个第二单元格的顶点带有U形锁件。 Vertex [0021] Preferably, the relative position of two second cells having a U-shaped locking member. 易于安装,且U形锁件平滑,不易破坏右室流出道心脏组织结构。 Easy to install and smooth U-shaped locking member, right ventricular outflow tract easily damaged cardiac tissue structure.

[0022] 进一步优选的,所述U形锁件的底边为直边。 [0022] Further preferably, the base U-shaped locking member is a straight edge.

[0023] 本发明还提供了一种肺动脉瓣膜置换装置,包括所述的肺动脉支架,以及固定在所述支撑网架内部的假体瓣膜。 [0023] The present invention also provides a pulmonary valve replacement device, comprising the pulmonary artery stent, and is fixed to the supporting prosthetic valve of the internal grid.

[0024] 其中,所述肺动脉支架的支撑网架和流入段均覆膜,可以加强手术补片的薄弱环 [0024] wherein the bracket support grid and the pulmonary artery flows into sections each coating film, can enhance the weak link of the surgical patch

-K-■P。 -K- ■ P.

[0025] 假体瓣膜可缝制在肺动脉支架的内壁,也可以采用现有的其他方法进行安装固定。 [0025] The prosthetic valve may be sewn to the inner wall of the pulmonary artery stent, may also be fixed by other conventional methods.

[0026] 本发明中如果没有特殊说明,在描述肺动脉支架及肺动脉瓣膜置换装置的结构时,均是指在人体内完全涨开状态下的结构。 [0026] In the present invention, unless otherwise stated, in the description of the structure of the pulmonary artery and pulmonary valve replacement holder means are means in the body structure in the fully opened state up.

[0027] 本发明对肺动脉支架尤其是流出段进行合理设计,避免了支架的植入过程中戳伤主肺动脉或肺动脉分支血管,大大降低了手术难度,规避了手术风险。 [0027] The present invention in particular to the pulmonary outflow stent segment rational design, to avoid the implantation of the stent in the main pulmonary artery or pulmonary poked branch vessel, greatly reduces the difficulty of operation, to avoid the risk of surgery.

[0028] 本发明的肺动脉支架有效的降低了对血流的阻挡作用,保证了血流畅通,且肺动脉支架安装牢固,在体内定位稳固不易发生移位。 [0028] Pulmonary stent of the present invention effectively reduces the blocking effect on blood flow, to ensure that the blood flow and pulmonary mounting bracket firmly secure easy to shift occurs in vivo targeting.

附图说明 BRIEF DESCRIPTION

[0029] 图1为本发明肺动脉支架的立体结构示意图; [0029] FIG. 1 is a schematic perspective view of the structure of the present invention, the pulmonary artery stent;

[0030] 图2为图1所示的肺动脉支架的主视图; [0030] FIG. 2 is a front view of a pulmonary artery stent shown in Figure 1;

[0031] 图3为图2所示的肺动脉支架的仰视图; [0031] FIG. 3 is a bottom view of the pulmonary artery stent shown in Figure 2;

[0032] 图4为图2所示的肺动脉支架的俯视图; [0032] FIG. 4 is a top plan view of the stent shown in the pulmonary artery;

[0033]图5为本发明肺动脉瓣膜置换装置其中一个角度的立体结构示意图; Wherein the angle a perspective structural view of pulmonary valve replacement device [0033] FIG. 5 of the present invention;

[0034] 图6为图5所示的肺动脉瓣膜置换装置另一个角度的立体结构示意图; Another three-dimensional structure of the angle [0034] FIG. 6 is shown in FIG. 5 schematic pulmonary valve replacement device;

[0035] 图7为图5所示的肺动脉瓣膜置换装置主视图; [0035] FIG. 5 FIG. 7 is a front view of pulmonary valve replacement device;

[0036] 图8为图7所示的肺动脉瓣膜置换装置仰视图; [0036] FIG 8 is shown in Figure 7 bottom view of the apparatus of pulmonary valve replacement;

[0037] 图9为图7所示的肺动脉瓣膜置换装置俯视图; Pulmonary valve replacement device [0037] FIG. 9 is a plan view shown in Figure 7;

[0038] 图10为现有技术中肺动脉支架的结构示意图; [0038] FIG. 10 is a schematic diagram of the prior art structure of the pulmonary artery stent;

[0039] 其中,1-支撑网架;2_流出段;3_流入段;4_定位条; [0039] wherein, l-supporting grid; 2_ outflow section; 3_ inflow section; 4_ strip is positioned;

[0040] 5-第一单元格;6_第二单元格;7_U形锁件;8_假体瓣膜。 [0040] 5- a first cell; 6_ a second cell; 7_U interlocking member; 8_ prosthetic valve.

具体实施方式 Detailed ways

[0041] 下面结合具体实施例对本发明作进一步阐释。 [0041] The following specific examples in conjunction with the present invention will be further explained.

[0042] 图1〜图4示出了本实施例肺动脉支架的结构,包括支撑网架1、流入段3和流出段I。 [0042] FIG. 1 ~ FIG. 4 shows the structure of the present embodiment of the cases of pulmonary stents, comprising a support grid, the inflow and outflow paragraphs 3 I.

[0043] 支撑网架I呈管状,由连续的菱形组成,当然也可由椭圆形、不规则形状组成,并没有严格的要求,只要保证肺动脉支架的支撑力和顺应性即可。 [0043] I tubular supporting grid, a continuous rhombuses, of course, also be elliptical, irregular composition, there is no strict requirement, as long as the supporting force and conformability to pulmonary stents. 支撑网架I的直径和长度可采用常规尺寸,也可以根据患者的具体情况针对性的进行定制。 I support grid using conventional diameter and length dimensions, may be targeted for specific circumstances customized patient.

[0044] 流出段2连接在支撑网架I轴向的一端且径向膨胀呈扩口,流出段2在支撑网架轴向上的延伸长度与流入段之比为1:2.2。 [0044] outflow section 2 is connected to the support grid I and the axial end flared radially expanded form, the outflow section 2 extends over a length in the axial direction of the support grid of the inflow section is 1: 2.2. 支撑网架I邻近流出段2部位具有绕周向分布的十二个第一单元格5,该第一单元格5呈菱形。 I adjacent the support grid section 2 flows circumferentially distributed about the portion having the first twelve cells 5, 5 of the first diamond-shaped cell. 流出段2由六个定位条4构成,这六个定位条4绕支撑网架I的周向依次分布,每个定位条4的两端均与两个相间隔第一单元格5的顶点相连接,这两个相间隔的第一单元格5之间间隔有一个第一单元格5,每个定位条4的中部朝向流出方向折弯成钝角,钝角的角度为120°。 Outflow section 2 is composed of six positioning bar 4, six strip 4 is positioned around the support grid to a circumferential distribution I sequentially, each retaining strip and the two ends 4 are spaced apart from the first phase of the cell vertex 5 connection, with a first unit cell between the first cell 5 5 two spaced intervals, each outflow direction toward the middle of the lock bar 4 is bent at an obtuse angle, obtuse angle of 120 °. 由此,定位条4与支撑网架I之间围成六个镂空区域。 Thus, the lock bar surrounded by six hollow region 4 between the grid and the support I. 所有的定位条4均包裹猪心包膜层,仅以图1中一个定位条为示例进行说明(其他定位条情况与之相同),填充剖面线的部分包裹猪心包膜层。 All lock bar 4 are wrapped porcine pericardium layers, only one of the positioning bar in FIG. 1 as an example will be described below (same as with the case of the other strip is located), porcine pericardium film wrapped partially filled hatching.

[0045] 流入段3连接在支撑网架I轴向的另一端,流入段3也径向膨胀呈扩口,以各自直径最大处为基准,流入段3的口径大于流出段2的口径,该流入段3与流出段2的口径比为 [0045] The inflow section 3 axially connected to the other terminal I of the support grid, flows into the radially expanded section 3 was also flared to the largest diameter of each of the reference, the inflow section diameter is greater than the outflow section diameter of 3 to 2, the 3 aperture ratio inflow section and the outflow section 2 is

1.3:1,符合患者的生理解剖结构,流入段和流出段起主要的支撑作用,可稳固的定位在植入位置,且支撑网架可承受较小的变形,有利于保持理想的瓣膜结构。 1.3: 1, in line with the patient's anatomy physiology, the inflow section and the outflow section play a major role in supporting the implant may be positioned in a stable position, and the support grid can be subjected to less deformation, it helps maintain a desired valve structure.

[0046] 流入段3的端部具有绕周向分布的十二个第二单元格6,第二单元格6的面积大于第一单元格5,为便于支架安装到输送系统上,如图6所示,位置相对的两个第二单元格6的顶点带有U形锁件7 (图1〜4中未显示),该U形锁件7的底边为直边。 End [0046] 3 flows into the section having twelve circumferentially around the second distribution cell 6, the second area of ​​the cell 6 is larger than the first cell 5, for ease of delivery system mounted to the bracket, FIG. 6 , the position of the two opposing vertices of the second cell 6 having a U-shaped locking member 7 (not shown in FIG. 1 ~ 4), the bottom edge of the U-shaped locking member 7 is a straight edge.

[0047] 本实施例还提供了一种肺动脉瓣膜置换装置,如图5〜图9所示,包括肺动脉支架和假体瓣膜8。 [0047] The present embodiment further provides a pulmonary valve replacement apparatus shown in FIG -5 to 9, including pulmonary stents and prosthetic valve 8.

[0048] 肺动脉支架可采用上面所述的结构,为加强手术补片的薄弱环节,肺动脉支架的支撑网架I和流入段3均覆膜,膜可采用猪心包膜,支撑网架I的内部缝制有假体瓣膜8。 [0048] Pulmonary stent structure described above may be employed to strengthen the weak links of the surgical patch, pulmonary bracket support grid I and the inflow section 3 are coated, the film may be employed porcine pericardium, the support grid I there are sewn inside the prosthetic valve 8.

[0049] 本实施例的肺动脉支架可采用自膨胀式镍钛记忆合金制成,不需借助球囊导管释放瓣膜,减轻患者负担。 [0049] The present embodiment may employ the pulmonary artery stent self-expanding nickel-titanium memory alloy, without the release valve by means of a balloon catheter, reduce the burden on the patient. 以图5所示肺动脉瓣置换装置为例,使用时,将肺动脉瓣置换装置固定在专门的输送系统上,先穿刺股静脉,输送系统携带着肺动脉瓣置换装置,从血管的入口经下腔静脉、右心房、三尖瓣、右心室,行至主肺动脉、肺动脉分支调整至合适的位置,将肺动脉瓣膜置换装置逐渐释放,肺动脉支架在人体内膨胀后,支架的径向支撑力能够使其固定在血管内壁上,此时,流出段定位条扩口位于主肺动脉邻近肺动脉分支的交叉部位,防止肺动脉支架在受心脏运动影响而下滑,镂空区域的面积大,保证血流畅通,且该结构的流出段不易戳破主肺动脉或肺动脉分支,降低了对血流的阻挡作用。 In pulmonary valve replacement apparatus shown in FIG. 5 as an example, in use, the pulmonary valve replacement device is fixed in a special delivery system, to puncture the femoral vein, the delivery system carrying pulmonary valve replacement apparatus, from the inlet through the inferior vena cava blood vessel , the right atrium, the tricuspid valve, the right ventricle, the main line to the pulmonary artery, pulmonary artery branches adjusted to the proper position, the gradual release of the pulmonary valve replacement device, the pulmonary artery stent body after expansion, the stent radial force to secure it can be on the vascular wall, this time, the outflow section of the lock bar positioned adjacent the flared portion of the pulmonary artery branches intersecting main pulmonary artery, pulmonary artery to prevent the stent by cardiac motion effects decline, large hollow region, to ensure blood flow, and the structure outflow section easily puncture the main pulmonary artery or pulmonary artery branch, reducing the effect of blocking the blood flow. 肺动脉支架的流入段扩口位于右室流出道,使得肺动脉支架植入后不受血流的影响易发生移位。 Flows into the pulmonary artery stent flared section located in the right ventricular outflow tract, pulmonary artery after stent implantation such that blood flow is not affected by displacement prone. 显然的,在进行肺动脉瓣膜置换时,也可以采用其他手术路径。 Obviously, the pulmonary artery valve replacement is performed, may also be other surgical path is taken.

Claims (10)

  1. 1.一种肺动脉支架,包括管状的支撑网架,以及连接在支撑网架轴向两端且径向膨胀呈扩口的流入段和流出段,所述支撑网架邻近流出段部位具有绕周向分布的若干第一单元格,其特征在于,所述的流出段由绕支撑网架周向依次分布的若干定位条构成,每个定位条的中部朝流出方向折弯,每个定位条的两端与相间隔的两个第一单元格的顶点相连接。 A pulmonary artery stent, comprising a tubular supporting grid, and the grid connected to the supporting axial ends and radially expanded form of the flared section and the outflow section of the inflow, outflow section adjacent the support grid having about a circumferential portion a first distribution to a number of cells, characterized in that the outflow section is supported by a grid around a plurality of circumferential distribution strip is positioned successively, the central strip is bent toward each positioning outflow direction, each positioning bar Both ends of the first two vertices of the cell is connected to spaced apart.
  2. 2.如权利要求1所述的肺动脉支架,其特征在于,所述的流出段在支撑网架轴向上的延伸长度小于等于流入段。 2. The pulmonary artery stent according to claim 1, characterized in that the outflow section extending length in the axial direction of the support grid less inflow section.
  3. 3.如权利要求1所述的肺动脉支架,其特征在于,每个定位条与支撑网架之间围成镂空区域,所述的镂空区域由W形的底边以及由定位条限定的顶边围成,定位条的两端跨接在W形底边的两端点处。 3. The pulmonary artery stent according to claim 1, wherein the enclosed hollow region between each retaining strip and the support grid, the hollow bottom area of ​​the W-shape defined by the location and the top edges surrounded, the two ends of the positioning bar ends at a crossover point at the base of the W-shaped.
  4. 4.如权利要求1所述的肺动脉支架,其特征在于,所述相间隔的两个第一单元格之间间隔有一个第一单元格。 The pulmonary artery stent as claimed in claim 1, wherein there is a first spacing between two cells in a first of the spaced apart cells.
  5. 5.如权利要求1所述的肺动脉支架,其特征在于,所述的定位条折弯成钝角或圆弧形。 5. The stent of claim pulmonary claim 1, characterized in that said retaining strip is bent at an obtuse angle or an arc shape.
  6. 6.如权利要求1所述的肺动脉支架,其特征在于,所有的定位条均包裹膜层。 The pulmonary artery stent as claimed in claim 1, characterized in that all the retaining strip are wrapped in film.
  7. 7.如权利要求1所述的肺动脉支架,其特征在于,所述流入段的口径大于流出段的口径。 7. The stent of claim pulmonary claim 1, characterized in that the inflow section diameter greater than the diameter of the outflow section.
  8. 8.如权利要求1所述的肺动脉支架,其特征在于,所述流入段的端部具有绕周向分布的若干第二单元格,第二单元格的数量大于定位条。 8. The stent of claim pulmonary claim 1, wherein an end portion of the inflow section having a second plurality of circumferentially around the cell distribution, the number of cells is greater than the second positioning strip.
  9. 9.如权利要求8所述的肺动脉支架,其特征在于,所述第二单元格的顶点带有连接件。 9. The stent of claim pulmonary claimed in claim 8, wherein an apex of the second cell with a connecting member.
  10. 10.一种肺动脉瓣膜置换装置,其特征在于,包括如权利I〜9任一项所述的肺动脉支架,以及固定在所述支撑网架内部的假体瓣膜。 A pulmonary valve replacement device, comprising I~9 as claimed in any one of the pulmonary artery stent, prosthetic valve and secured to the support of the inner grid.
CN 201310257705 2013-06-25 2013-06-25 Pulmonary artery and pulmonary valve replacement stent device having the stent pulmonary CN103431931B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201310257705 CN103431931B (en) 2013-06-25 2013-06-25 Pulmonary artery and pulmonary valve replacement stent device having the stent pulmonary

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201310257705 CN103431931B (en) 2013-06-25 2013-06-25 Pulmonary artery and pulmonary valve replacement stent device having the stent pulmonary

Publications (2)

Publication Number Publication Date
CN103431931A true CN103431931A (en) 2013-12-11
CN103431931B true CN103431931B (en) 2015-10-28

Family

ID=49685723

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201310257705 CN103431931B (en) 2013-06-25 2013-06-25 Pulmonary artery and pulmonary valve replacement stent device having the stent pulmonary

Country Status (1)

Country Link
CN (1) CN103431931B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104720937B (en) * 2015-03-26 2017-09-26 杭州启明医疗器械有限公司 Reducing the compression length of the valve support and the valve means having a valve replacement stent
CN107157622A (en) * 2015-03-26 2017-09-15 杭州启明医疗器械有限公司 Valved stent safe to use and valvular replacement device with valved stent
CN105287051B (en) * 2015-09-30 2017-10-10 复旦大学附属中山医院 One kind of peripheral arterial routes of implantable prosthetic aortic ring system

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101011298A (en) * 2006-01-16 2007-08-08 孔祥清 Device for replacing aortic valve membrane or pulmonary valve membrane percutaneously
CN101014302A (en) * 2004-09-07 2007-08-08 彼鲁兹实验室公司 Interchangeable prosthetic valve
CN101152111A (en) * 2007-09-07 2008-04-02 中国人民解放军第四军医大学第一附属医院 Pulmonary artery coarctation bracket for pulmonary hypertension surgery treat
CN101953725A (en) * 2010-04-19 2011-01-26 杭州启明医疗器械有限公司 Artificial valve displacement device and stent
CN101961269A (en) * 2010-04-19 2011-02-02 杭州启明医疗器械有限公司 Conveying device for conveying artificial cardiac valve replacement device
CN102113921A (en) * 2009-12-30 2011-07-06 微创医疗器械(上海)有限公司 Intervention-type heart valve
CN203379235U (en) * 2013-06-25 2014-01-08 杭州启明医疗器械有限公司 Pulmonary artery support and pulmonary artery valve replacement device with thereof

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2703665C (en) * 2007-10-25 2016-05-10 Symetis Sa Stents, valved-stents and methods and systems for delivery thereof
US20100114305A1 (en) * 2008-10-30 2010-05-06 Wei-Chang Kang Implantable Valvular Prosthesis
US9480557B2 (en) * 2010-03-25 2016-11-01 Medtronic, Inc. Stents for prosthetic heart valves

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101014302A (en) * 2004-09-07 2007-08-08 彼鲁兹实验室公司 Interchangeable prosthetic valve
CN101011298A (en) * 2006-01-16 2007-08-08 孔祥清 Device for replacing aortic valve membrane or pulmonary valve membrane percutaneously
CN101152111A (en) * 2007-09-07 2008-04-02 中国人民解放军第四军医大学第一附属医院 Pulmonary artery coarctation bracket for pulmonary hypertension surgery treat
CN102113921A (en) * 2009-12-30 2011-07-06 微创医疗器械(上海)有限公司 Intervention-type heart valve
CN101953725A (en) * 2010-04-19 2011-01-26 杭州启明医疗器械有限公司 Artificial valve displacement device and stent
CN101961269A (en) * 2010-04-19 2011-02-02 杭州启明医疗器械有限公司 Conveying device for conveying artificial cardiac valve replacement device
CN203379235U (en) * 2013-06-25 2014-01-08 杭州启明医疗器械有限公司 Pulmonary artery support and pulmonary artery valve replacement device with thereof

Also Published As

Publication number Publication date Type
CN103431931A (en) 2013-12-11 application

Similar Documents

Publication Publication Date Title
US7530995B2 (en) Device for reduction of pressure effects of cardiac tricuspid valve regurgitation
US7591848B2 (en) Riveted stent valve for percutaneous use
US20100249894A1 (en) Prosthetic heart valve system
US20070167974A1 (en) Removable blood conduit filter
US7967853B2 (en) Percutaneous valve, system and method
US7947075B2 (en) Minimally invasive heart valve replacement
US8801776B2 (en) Infundibular reducer devices
US20060271166A1 (en) Stentless support structure
US20120078360A1 (en) Prosthetic devices, systems and methods for replacing heart valves
US7806919B2 (en) Double-walled stent system
US20080293996A1 (en) Systems and methods for volume reduction
US20130030521A1 (en) Devices for reducing left atrial pressure having biodegradable constriction, and methods of making and using same
US20130261739A1 (en) Dual Valve Prosthesis for Transcatheter Valve Implantation
US20130150956A1 (en) Prosthetic heart valve having improved commissure supports
US20110230957A1 (en) Alternating circumferential bridge stent design and methods for use thereof
WO2011143263A2 (en) Stentless support structure
US8986375B2 (en) Anti-paravalvular leakage component for a transcatheter valve prosthesis
US20140277423A1 (en) Self-actuating sealing portions for paravalvular leak protection
WO2007140470A2 (en) Prosthetic insert for improving heart valve function
CN101011298A (en) Device for replacing aortic valve membrane or pulmonary valve membrane percutaneously
CN1961847A (en) Artificial heart valve with scaffold and delivery apparatus thereof
US20100204770A1 (en) Stent Delivery System Permitting in Vivo Stent Repositioning
WO2007081820A1 (en) Transcatheter delivery of a replacement heart valve
US20120316642A1 (en) Invasive cardiac valve
Haas et al. Percutaneous implantation of the Edwards SAPIEN™ pulmonic valve: initial results in the first 22 patients

Legal Events

Date Code Title Description
C06 Publication
C10 Entry into substantive examination
C53 Correction of patent for invention or patent application
COR Change of bibliographic data

Free format text: CORRECT: INVENTOR; FROM: CENG MIN ZHANG QIMING TO: CENG MIN ZHOU DAXIN ZHANG QIMING

C14 Grant of patent or utility model
COR Change of bibliographic data