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CN1977777B - Pipeline type vascular stent - Google Patents

Pipeline type vascular stent Download PDF

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Publication number
CN1977777B
CN1977777B CN 200510111306 CN200510111306A CN1977777B CN 1977777 B CN1977777 B CN 1977777B CN 200510111306 CN200510111306 CN 200510111306 CN 200510111306 A CN200510111306 A CN 200510111306A CN 1977777 B CN1977777 B CN 1977777B
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shaped
ring
structural
connectors
stent
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CN1977777A (en
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张宪淼
张维鑫
李军生
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Shanghai Kangdelai Enterprise Development Group Co Ltd
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Shanghai Kangdelai Enterprise Development Group Co Ltd
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Abstract

本发明提供了一种管网式血管支架，它由金属圆管镂刻而成，包含多个结构相同、沿轴向排列的环状支撑体，每两个环状支撑体为一组，组内两个环状支撑体呈镜面对称排列并通过多个“几”字形连接体连接，组与组之间对齐排列并通过多个“

Figure 200510111306.5_AB_0
”形连接体连接。本发明的管网式血管支架在扩张后既能保持较高的径向支撑力，又有很好的轴向柔顺性和血管顺应性，轴向缩短率很小，金属表面覆盖率适中。整个支架各组成部分均匀对称，减少了支架各部分在膨胀过程中绕支架轴向发生相对旋转的可能性。

Figure 200510111306

The invention provides a pipe-net type vascular stent, which is carved from a metal circular tube and includes a plurality of ring-shaped supports with the same structure and arranged in the axial direction. Every two ring-shaped supports form a group. The two annular supports are arranged mirror-symmetrically and connected by multiple "several"-shaped connectors, and the groups are aligned and arranged through multiple ""

Figure 200510111306.5_AB_0
"shaped connector connection. The pipe network stent of the present invention can not only maintain a high radial support force after expansion, but also have good axial flexibility and blood vessel compliance, and the axial shortening rate is very small. Metal The surface coverage is moderate. The components of the entire stent are uniform and symmetrical, which reduces the possibility of relative rotation of each part of the stent around the stent axis during the expansion process.

Figure 200510111306

Description

管网式血管支架 Tube network stent

技术领域technical field

本发明涉及一种医疗器械，特别涉及一种适用于人体血管介入治疗领域中的管网式血管支架。 The invention relates to a medical device, in particular to a pipe-net type vascular stent suitable for the field of interventional treatment of human blood vessels. the

背景技术Background technique

经皮穿刺血管成形术，简称PTA术，是在医学影像设备的导引下，利用穿刺针、导丝和导引鞘把套有紧缩的支架的球囊导管插进人体血管，并输送到血管狭窄处，随球囊的扩张，支架也被撑开，球囊收缩回撤后，产生塑性变形的金属支架则留在原地，并嵌入了血管，起到扩张血管的作用。此方法使得手术的长期疗效好。 Percutaneous puncture angioplasty, referred to as PTA, is under the guidance of medical imaging equipment, using a puncture needle, a guide wire and a guide sheath to insert a balloon catheter with a tightened stent into a human blood vessel and deliver it to the blood vessel At the stenosis, with the expansion of the balloon, the stent is also stretched. After the balloon is retracted and retracted, the plastically deformed metal stent remains in place and is embedded in the blood vessel, playing the role of dilating the blood vessel. This approach leads to good long-term outcomes of the surgery. the

从临床使用的角度出发，一种理想的血管支架设计要同时具有以下技术指标：足够的径向支撑力，好的轴向柔顺性，小的径向反弹比和轴向缩短率，适中(10％-20％)的金属空间占有面积比等。由于这些技术指标在支架结构设计上的互相制约性，使得现有支架设计很难在这些方面达到有效的统一。 From the perspective of clinical use, an ideal vascular stent design should have the following technical indicators at the same time: sufficient radial support force, good axial compliance, small radial rebound ratio and axial shortening rate, moderate (10 %-20%) metal space occupation area ratio, etc. Due to the mutual restriction of these technical indicators in the design of the stent structure, it is difficult to effectively unify the existing stent designs in these aspects. the

现有技术的血管支架形式有多种，它们各有特色，其目的都是要提高支架的径向支撑强度和轴向柔软性等功能。但现有支架因其结构上的局限性，在这两个方面很难达到有效的统一，有些支架扩张后虽然支撑力较强，但轴向柔软性欠佳，且金属表面覆盖率和轴向的缩短率较大；有些支架虽轴向柔软性较好，但径向支撑力不足，金属表面覆盖率较小，容易引起血管再狭窄，故仍有待进一步提高。 There are many forms of vascular stents in the prior art, each of which has its own characteristics, and the purpose of which is to improve the radial support strength and axial flexibility of the stent. However, due to the limitations of the structure of the existing stents, it is difficult to achieve effective unity in these two aspects. Although some stents have strong supporting force after expansion, the axial flexibility is not good, and the metal surface coverage and axial The shortening rate is relatively large; some stents have good axial flexibility, but the radial support force is insufficient, the metal surface coverage is small, and it is easy to cause vascular restenosis, so it still needs to be further improved. the

发明内容Contents of the invention

本发明的目的，在于提供一种在扩张后既能保持较高的径向支撑力又有很好的轴向柔顺性和血管顺应性、轴向缩短率很小、金属表面覆盖率适中的管网式血管支架。 The purpose of the present invention is to provide a tube that can maintain a high radial support force after expansion, has good axial compliance and blood vessel compliance, has a small axial shortening rate, and has a moderate metal surface coverage. Mesh vascular stent. the

 本发明的目的是通过以下技术方案实现的：一种管网式血管支架，由金属圆管镂刻而成，所述的支架包含多个结构相同、沿轴向排列的环状支撑体，每两个环状支撑体为一组，组内两个环状支撑体呈镜面对称排列并通过多个“几”字形连接体连接，组与组之间对齐排列并通过多个 

Figure DEST_PATH_GSB00000160178400011
形连接体连接。 The purpose of the present invention is achieved through the following technical solutions: a pipe network vascular stent, which is carved from a metal circular tube. The stent includes a plurality of ring-shaped supports with the same structure and arranged Two ring-shaped supports form a group, and the two ring-shaped supports in the group are symmetrically arranged in a mirror and connected by multiple "several"-shaped connectors. The groups are aligned and arranged through multiple
Figure DEST_PATH_GSB00000160178400011
Connector connection.

所述的环状支撑体由多个“3”字形结构件和多个 形结构件或多个反“3”字形结构件和多个 

Figure DEST_PATH_GSB00000160178400013
形结构件波浪形交替串连形成，在相邻的两环状支撑体中，一环状支撑体中的“3”字形结构件对应另一环状支撑体中的反“3”字形结构件，一环状支撑体中的 
Figure DEST_PATH_GSB00000160178400014
形结构件对应另一环状支撑体中的 形结构件。 The annular support body is composed of a plurality of "3" shaped structural parts and a plurality of Shaped structural members or multiple anti-"3" shaped structural members and multiple
Figure DEST_PATH_GSB00000160178400013
Shaped structural members are formed in alternating series in waves. Among the two adjacent ring-shaped supports, the "3"-shaped structural members in one ring-shaped support body correspond to the reverse "3"-shaped structural members in the other ring-shaped support body. , in a ring support
Figure DEST_PATH_GSB00000160178400014
The structural member corresponds to the other annular support shape structure.

所述的“几”字形连接体连接在组内两环状支撑体中的“3”字形结构件和反“3”字形结构件之间，其连接点在“3”字形结构件和反“3”字形结构件的中间突出部位，“几”字形连接体的中部突出部分位于 和 

Figure DEST_PATH_GSB00000160178400017
形结构件之间。 The "several"-shaped connecting body is connected between the "3"-shaped structural member and the reverse "3"-shaped structural member in the two ring-shaped supports in the group, and its connection point is between the "3"-shaped structural member and the reverse "3"-shaped structural member. The middle protruding part of the 3"-shaped structural part, and the middle protruding part of the "ji"-shaped connecting body is located and
Figure DEST_PATH_GSB00000160178400017
between structural members.

所述的 

Figure DEST_PATH_GSB00000160178400018
形连接体连接在组与组之间的两相邻环状支撑体中的“3”字形结构件和反“3”字形结构件的一侧，其连接点在“3”字形结构件与 
Figure DEST_PATH_GSB00000160178400019
形结构件的交界处和反“3”字形结构件与 
Figure DEST_PATH_GSB000001601784000110
形结构件的交界处，其主体部分位于 和 形结构件之间。 said
Figure DEST_PATH_GSB00000160178400018
The connecting body is connected to one side of the "3"-shaped structural member and the reverse "3"-shaped structural member in the two adjacent ring-shaped supports between the groups, and the connection point is between the "3"-shaped structural member and the reverse "3"-shaped structural member.
Figure DEST_PATH_GSB00000160178400019
The junction of the shaped structural parts and the anti-"3" shaped structural parts and
Figure DEST_PATH_GSB000001601784000110
The junction of structural members, the main part of which is located in and between structural members.

所述的连接在同一组两环状支撑体之间的“几”字形连接体为三个，三个“几”字形连接体沿圆周间隔均匀分布，所述的连接在组与组之间两相邻环状支撑体之间的 

Figure DEST_PATH_GSB000001601784000113
形连接体为两个，两个 形连接体沿圆周近均匀分布，在整个支架中，连接在相邻两组环状支撑体中的“几”字形连接体交错排列，连接在组与组之间的 形连接体呈螺旋形排列。 The number of "ji"-shaped connectors connected between the same group of two ring-shaped supports is three, and the three "ji"-shaped connectors are evenly distributed along the circumference. Between adjacent ring supports
Figure DEST_PATH_GSB000001601784000113
There are two shaped connectors, two Shaped connectors are nearly evenly distributed along the circumference. In the whole scaffold, the "ji"-shaped connectors connected to two adjacent ring-shaped supports are arranged in a staggered manner, and the "ji"-shaped connectors connected between groups are arranged alternately. Connectors are arranged in a helical shape.

所述的环状支撑体中的 

Figure DEST_PATH_GSB000001601784000116
和 形结构件有长、短两种结构形式，并且在同一环状支撑体中的长 
Figure DEST_PATH_GSB000001601784000118
形结构件和短 
Figure DEST_PATH_GSB000001601784000119
形结构件交替出现或长 形结构件和短 形结构件交替出现，所述的“几”字形连接体的中部突出部分位于短 和 形结构件之间。 In the ring support
Figure DEST_PATH_GSB000001601784000116
and There are two structural forms of long and short structural members, and the long
Figure DEST_PATH_GSB000001601784000118
structural members and short
Figure DEST_PATH_GSB000001601784000119
Structural components appear alternately or long structural members and short Shaped structural components appear alternately, and the central protruding part of the "several"-shaped connector is located in the short and between structural members.

本发明管网式血管支架由于采用了以上技术方案，使得支架在扩张后既能保持较高的径向支撑力，又有很好的轴向柔顺性和血管顺应性，轴向缩短率很小，金属表面覆盖率适中。整个支架各组成部分均匀对称，减少了支架各部分 在膨胀过程中绕支架轴向发生相对旋转的可能性。 The pipe network vascular stent of the present invention adopts the above technical scheme, so that the stent can not only maintain a high radial support force after expansion, but also have good axial flexibility and blood vessel compliance, and the axial shortening rate is very small , moderate metal surface coverage. The components of the entire stent are uniform and symmetrical, which reduces the possibility of relative rotation of each part of the stent around the stent axis during the expansion process. the

附图说明Description of drawings

图1为本发明管网式血管支架的结构展开示意图。 Fig. 1 is a schematic diagram of the expanded structure of the tube-network vascular stent of the present invention. the

具体实施方式Detailed ways

参见图1，本发明的管网式血管支架，由金属圆管镂刻而成，包含多个结构相同、沿轴向排列的环状支撑体1，每两个环状支撑体为一组，组内两个环状支撑体呈镜面对称排列并通过多个“几”字形连接体2连接，组与组之间对齐排列并通过多个 形连接体3连接。 Referring to Fig. 1, the pipe network type vascular stent of the present invention is carved from a metal circular tube and includes a plurality of ring-shaped supports 1 with the same structure and arranged in the axial direction. Every two ring-shaped supports form a group. The two inner ring supports are arranged mirror-symmetrically and connected by multiple "several"-shaped connectors 2, and the groups are aligned and arranged through multiple Shape connector 3 connection.

本发明中的每个环状支撑体1都由多个“3”字形结构件11和多个 

Figure DEST_PATH_GSB00000160178400022
形结构件12或多个反“3”字形结构件和多个 
Figure DEST_PATH_GSB00000160178400023
形结构件波浪形交替串连形成，在相邻的两环状支撑体中，一环状支撑体中的“3”字形结构件对应另一环状支撑体中的反“3”字形结构件，一环状支撑体中的 
Figure DEST_PATH_GSB00000160178400024
形结构件对应另一环状支撑体中的 
Figure DEST_PATH_GSB00000160178400025
形结构件。 Each annular support body 1 in the present invention is all made up of a plurality of " 3 " font structural parts 11 and a plurality of
Figure DEST_PATH_GSB00000160178400022
12 or more anti-"3" shaped structural members and multiple
Figure DEST_PATH_GSB00000160178400023
Shaped structural members are formed in alternating series in waves. Among the two adjacent ring-shaped supports, the "3"-shaped structural members in one ring-shaped support body correspond to the reverse "3"-shaped structural members in the other ring-shaped support body. , in a ring support
Figure DEST_PATH_GSB00000160178400024
The structural member corresponds to the other annular support
Figure DEST_PATH_GSB00000160178400025
shape structure.

本发明中的“几”字形连接体2连接在组内两环状支撑体中的“3”字形结构件和反“3”字形结构件11之间，其连接点在“3”字形结构件和反“3”字形结构件的中间突出部位，其中部突出部分位于 知 

Figure DEST_PATH_GSB00000160178400027
形结构件12之间。在本实施例中，连接在同一组两环状支撑体之间的“几”字形连接体为三个，三个“几”字形连接体沿圆周间隔均匀分布，在整个支架中，连接在相邻两组环状支撑体中的“几”字形连接体交错排列。 The "J"-shaped connecting body 2 in the present invention is connected between the "3"-shaped structural member and the reverse "3"-shaped structural member 11 in the two annular supports in the group, and its connection point is at the "3"-shaped structural member And the middle protruding part of the anti-"3" shaped structure, the middle protruding part is located Know
Figure DEST_PATH_GSB00000160178400027
Between the structural members 12. In this embodiment, there are three "ji"-shaped connectors connected between the same group of two annular supports, and the three "ji"-shaped connectors are evenly distributed along the circumference. The "ji"-shaped connectors in the adjacent two groups of annular supports are arranged in a staggered manner.

本发明中的 形连接体3连接在组与组之间的两相邻环状支撑体中的“3”字形结构件和反“3”字形结构件11的一侧，其连接点在“3”字形结构件与 形结构件的交界处和反“3”字形结构件与 形结构件的交界处，其主体部分位于两 

Figure DEST_PATH_GSB000001601784000211
和 形结构件12之间。在本实施例中，连接在组与组之间两相邻环状支撑体之间的 形连接体为两个，两个 形连接体沿圆周近均匀分布，在整个支架中，连接在组与组之间的 
Figure DEST_PATH_GSB000001601784000215
形连接体呈螺旋形排列。 In the present invention The shape connector 3 is connected to one side of the "3"-shaped structural member and the reverse "3"-shaped structural member 11 in two adjacent annular supports between the groups, and its connection point is at the "3"-shaped structural member and The junction of the shaped structural parts and the anti-"3" shaped structural parts and The junction of structural members, the main part of which is located at the two
Figure DEST_PATH_GSB000001601784000211
and Between the structural members 12. In this embodiment, the two adjacent annular supports connected between groups There are two shaped connectors, two The shaped connectors are nearly evenly distributed along the circumference, and in the whole scaffold, the
Figure DEST_PATH_GSB000001601784000215
Connectors are arranged in a helical shape.

本发明中的环状支撑体中的 和 形结构件有长、短两种结构形式，并且在同一环状支撑体中的长 

Figure DEST_PATH_GSB000001601784000218
形结构件121和短 
Figure DEST_PATH_GSB000001601784000219
形结构件122交替 出现或长 形结构件和短 
Figure DEST_PATH_GSB00000160178400032
形结构件交替出现，“几”字形连接体的中部突出部分位于两个短 
Figure DEST_PATH_GSB00000160178400033
和 形结构件之间。 In the annular support body in the present invention and There are two structural forms of long and short structural members, and the long
Figure DEST_PATH_GSB000001601784000218
Shaped members 121 and short
Figure DEST_PATH_GSB000001601784000219
Structural members 122 appear alternately or long structural members and short
Figure DEST_PATH_GSB00000160178400032
Shaped structural components appear alternately, and the middle protruding part of the "ji"-shaped connector is located in two short
Figure DEST_PATH_GSB00000160178400033
and between structural members.

本发明的柔性血管支架，将环状支撑体中的组成单元“3”字形结构件与 形结构件设计为各6个或8个，并通过改变环状支撑体的数目来控制支架的长短，可以在保持金属表面覆盖率适中的情况下，很好地适应不同粗细血管和不同长短病变的需要。其中“3”字形结构件或反“3”字形结构件可以提供较大的径向支撑力， 形结构件则较窄小，两者配合使用可以更好的调节支架的径向支撑力。“几”字形连接体和 形连接体交替连接在两相邻环状支撑体之间，一方面避免了整个支架上各个环状支撑体在轴向上缩短的累积，另一方面使得“几”字形或 形连接体会随着支架的膨胀向两边张开，其中“几”字形连接体张开的程度要大于 

Figure DEST_PATH_GSB00000160178400039
形连接体张开的程度，“几”字形和 
Figure DEST_PATH_GSB000001601784000310
形连接体的配合使用，可以调整支架长度的增加量，以弥补支架环状支撑体部分的轴向缩短。环状支撑体与“几”字形和 形连接体的配合使用能够保证本发明支架在膨胀过程中一方面径向膨胀均匀且适度，同时又具有膨胀后轴向缩短几乎为零的技术特点。 In the flexible vascular stent of the present invention, the "3"-shaped structural parts of the constituent units in the ring-shaped support body and the The shape structure is designed to be 6 or 8 each, and the length of the stent is controlled by changing the number of ring supports, which can well adapt to different thickness vessels and different length lesions while maintaining a moderate metal surface coverage needs. Among them, the "3"-shaped structural parts or the reverse "3"-shaped structural parts can provide greater radial support force, The structural members are narrower, and the combination of the two can better adjust the radial support force of the bracket. "Ji" shape connector and Shape connectors are alternately connected between two adjacent ring-shaped supports. On the one hand, it avoids the accumulation of axial shortening of each ring-shaped support on the whole bracket. The shape connectors will open to both sides with the expansion of the stent, and the degree of opening of the "ji"-shaped connectors is greater than that of
Figure DEST_PATH_GSB00000160178400039
The degree of opening of the shape connector, the shape of "Ji" and
Figure DEST_PATH_GSB000001601784000310
With the use of the shaped connector, the increase in the length of the stent can be adjusted to compensate for the axial shortening of the ring-shaped support body of the stent. Ring support body and "ji" shape and The cooperating use of the shaped connector can ensure that the stent of the present invention expands evenly and moderately in the radial direction during the expansion process, and at the same time has the technical characteristics that the axial shortening after expansion is almost zero.

本发明中把环状支撑体按照方向相反，沿轴向交替对齐的方式排列，使得每组两个相邻环状支撑体的结构形状关于镜面对称，组与组之间两个相邻环状支撑体的结构形状也基本上呈镜面对称(不对称处在于两个对应的 

Figure DEST_PATH_GSB000001601784000312
形结构件一长一短)，大大减少了支架各部分在膨胀过程中绕支架轴向发生相对旋转的可能性，能够减少对血管壁的损伤。环状支撑体与环状支撑体之间的连接体的形状为“几”字形或 形，相邻环状支撑体之间连接体的数目只有三个或两个，且两种连接体呈对称或近均匀分布，使得支架在不损失径向支撑力的情况下，能够提供优良的轴向柔顺性和血管顺应性。 In the present invention, the ring-shaped supports are arranged in the opposite direction and alternately aligned in the axial direction, so that the structural shape of each group of two adjacent ring-shaped supports is symmetrical about the mirror plane, and the two adjacent ring-shaped supports between groups The structural shape of the support body is also basically mirror-symmetrical (the asymmetry lies in the two corresponding
Figure DEST_PATH_GSB000001601784000312
One long and one short structural member), which greatly reduces the possibility of relative rotation of each part of the stent around the axial direction of the stent during the expansion process, and can reduce damage to the vessel wall. The shape of the connecting body between the ring-shaped support body and the ring-shaped support body is a "several" shape or shape, the number of connectors between adjacent annular supports is only three or two, and the two connectors are symmetrically or nearly uniformly distributed, so that the stent can provide excellent support without losing radial support force. Axial compliance and vascular compliance.

本发明中“几”字形连接体上方的 

Figure DEST_PATH_GSB000001601784000314
形结构件短于“几”连接体下方的 
Figure DEST_PATH_GSB000001601784000315
形结构件，这样可以使“几”字形连接体与 
Figure DEST_PATH_GSB000001601784000316
形结构件结合的地方金属覆盖均匀，能尽量减少对血管壁的损伤；同样的设计也存在于 形结构件的下面部分，考虑到 形连接体的存在，特意把 
Figure DEST_PATH_GSB000001601784000319
形结构件下面部分设计成水平状态，以减少局部金属的过度集中，保证金属覆盖的均匀性，减少对血管壁的损伤。 In the present invention, above the "several"-shaped connecting body
Figure DEST_PATH_GSB000001601784000314
The structural members are shorter than those under the "several" connectors
Figure DEST_PATH_GSB000001601784000315
Shaped structural members, so that the "several" shaped connectors and
Figure DEST_PATH_GSB000001601784000316
The metal covering where the structural parts are combined can minimize the damage to the blood vessel wall; the same design also exists in the The lower part of the structural member, taking into account The presence of shape connectors, deliberately put
Figure DEST_PATH_GSB000001601784000319
The lower part of the structural member is designed to be horizontal to reduce the excessive concentration of local metal, ensure the uniformity of metal coverage, and reduce the damage to the blood vessel wall.

虽然本发明管网式血管支架已参照当前的具体实例进行了描述，但是本技术领域的普通技术人员应该认识到，以上的实例仅是用来说明本发明，在没有脱离本发明精神的情况下还可作出各种等效的变化和修改。因此，只要在本发明的实质精神范围内对上述实例的变化，变型都将落在本发明的权利要求书的范围内。 Although the pipe network vascular stent of the present invention has been described with reference to the current specific examples, those of ordinary skill in the art should recognize that the above examples are only used to illustrate the present invention, without departing from the spirit of the present invention Various equivalent changes and modifications may also be made. Therefore, as long as there are changes and modifications to the above examples within the true spirit of the present invention, all modifications will fall within the scope of the claims of the present invention. the

Claims (5)

1.一种管网式血管支架，由金属圆管镂刻而成，所述的支架包含多个结构相同、沿轴向排列的环状支撑体，每两个环状支撑体为一组，组内两个环状支撑体呈镜面对称排列并通过多个“几”字形连接体连接，组与组之间对齐排列并通过多个形连接体连接；其特征在于：所述的环状支撑体由多个“3”字形结构件和多个形结构件或多个反“3”字形结构件和多个
Figure FSB00000160178300013
形结构件波浪形交替串连形成，在相邻的两环状支撑体中，一环状支撑体中的“3”字形结构件对应另一环状支撑体中的反“3”字形结构件，一环状支撑体中的形结构件对应另一环状支撑体中的形结构件。1. A pipe network type vascular stent, which is carved from a metal circular tube. The stent includes a plurality of annular supports with the same structure and arranged in the axial direction. Every two annular supports form a group. The two inner ring supports are arranged mirror-symmetrically and connected by multiple "several"-shaped connectors, and the groups are aligned and arranged through multiple connected by a shaped connector; it is characterized in that: the ring-shaped support is composed of a plurality of "3"-shaped structural parts and a plurality of Shaped structural members or multiple anti-"3" shaped structural members and multiple
Figure FSB00000160178300013
Shaped structural members are formed in alternating series in waves. Among the two adjacent ring-shaped supports, the "3"-shaped structural members in one ring-shaped support body correspond to the reverse "3"-shaped structural members in the other ring-shaped support body. , in a ring support The structural member corresponds to the other annular support shape structure. 2.如权利要求1所述的管网式血管支架，其特征在于：所述的“几”字形连接体连接在组内两环状支撑体中的“3”字形结构件和反“3”字形结构件之间，其连接点在“3”字形结构件和反“3”字形结构件的中间突出部位，“几”字形连接体的中部突出部分位于
Figure FSB00000160178300016
和形结构件之间。2. The pipe network vascular stent according to claim 1, characterized in that: the "several"-shaped connecting body is connected to the "3"-shaped structural member and the reverse "3" in the two ring-shaped support bodies in the group. Between the glyph-shaped structural parts, the connection point is at the middle protruding part of the "3"-shaped structural part and the reverse "3"-shaped structural part, and the middle protruding part of the "ji"-shaped connecting body is located
Figure FSB00000160178300016
and between structural members. 3.如权利要求1所述的管网式血管支架，其特征在于：所述的
Figure FSB00000160178300018
形连接体连接在组与组之间的两相邻环状支撑体中的“3”字形结构件和反“3”字形结构件的一侧，其连接点在“3”字形结构件与
Figure FSB00000160178300019
形结构件的交界处和反“3”字形结构件与
Figure FSB000001601783000110
形结构件的交界处，其主体部分位于和形结构件之间。3. The pipe network stent as claimed in claim 1, characterized in that: the
Figure FSB00000160178300018
The connecting body is connected to one side of the "3"-shaped structural member and the reverse "3"-shaped structural member in the two adjacent ring-shaped supports between the groups, and the connection point is between the "3"-shaped structural member and the reverse "3"-shaped structural member.
Figure FSB00000160178300019
The junction of the shaped structural parts and the anti-"3" shaped structural parts and
Figure FSB000001601783000110
The junction of structural members, the main part of which is located in and between structural members. 4.如权利要求1所述的管网式血管支架，其特征在于：所述的连接在同一组两环状支撑体之间的“几”字形连接体为三个，三个“几”字形连接体沿圆周间隔均匀分布，所述的连接在组与组之间两相邻环状支撑体之间的
Figure FSB000001601783000113
形连接体为两个，两个形连接体沿圆周近均匀分布，在整个支架中，连接在相邻两组环状支撑体中的“几”字形连接体交错排列，连接在组与组之间的
Figure FSB000001601783000115
形连接体呈螺旋形排列。4. The pipe network vascular stent according to claim 1, characterized in that: there are three "ji"-shaped connectors connected between the same group of two annular supports, and three "ji"-shaped connectors The connectors are evenly distributed along the circumference, and the connection is between two adjacent ring-shaped supports between groups.
Figure FSB000001601783000113
There are two shaped connectors, two Shaped connectors are nearly evenly distributed along the circumference. In the whole scaffold, the "ji"-shaped connectors connected to two adjacent ring-shaped supports are arranged in a staggered manner, and the "ji"-shaped connectors connected between groups are arranged alternately.
Figure FSB000001601783000115
Connectors are arranged in a helical shape. 5.如权利要求1所述的管网式血管支架，其特征在于：所述的环状支撑体中的
Figure FSB000001601783000116
和形结构件有长、短两种结构形式，并且在同一环状支撑体中的长
Figure FSB000001601783000118
形结构件和短形结构件交替出现或长形结构件和短
Figure FSB000001601783000121
形结构件交替出现，所述的“几”字形连接体的中部突出部分位于短
Figure FSB000001601783000122
和形结构件之间。5. The pipe network stent as claimed in claim 1, characterized in that: the ring-shaped support body
Figure FSB000001601783000116
and There are two structural forms of long and short structural members, and the long
Figure FSB000001601783000118
structural members and short Structural components appear alternately or long structural members and short
Figure FSB000001601783000121
Shaped structural components appear alternately, and the middle protruding part of the "several"-shaped connector is located in the short
Figure FSB000001601783000122
and between structural members.
CN 200510111306 2005-12-08 2005-12-08 Pipeline type vascular stent Expired - Lifetime CN1977777B (en)

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CN105496604B (en) * 2016-01-22 2018-04-06 山东省千佛山医院 Heart coronary artery support
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