技术领域technical field
本实用新型属于医疗器械领域，具体地说，涉及一种非对称圆锥形血管支架。The utility model belongs to the field of medical instruments, in particular to an asymmetric conical vascular support.
背景技术Background technique
心脏与心血管疾病已成为全世界第一大杀手，在美国每年所有的死亡的人中有一半以上是由心脏和心血管疾病直接引起的。在国内，随着物质生活水平的提高，生活方式的改变，心血管疾病发病率越来越高，由于心血管狭窄引起的冠心病已经成为危及人类生命健康安全的主要疾病之一。目前，冠心病的治疗分为药物治疗、外科手术和介入治疗三大类。药物治疗周期长、见效慢、副作用大，患者容易产生对药物的依赖性；外科手术会对病人产生永久性的伤害；介入性血管支架治疗方法因其创伤小、效果好，成为目前治疗心血管狭窄的新型方法。Heart and cardiovascular diseases have become the number one killer in the world, and more than half of all deaths in the United States are directly caused by heart and cardiovascular diseases. In China, with the improvement of material living standards and changes in lifestyle, the incidence of cardiovascular diseases is increasing. Coronary heart disease caused by cardiovascular stenosis has become one of the main diseases that endanger human life and health. At present, the treatment of coronary heart disease is divided into three categories: drug therapy, surgery and interventional therapy. The drug treatment cycle is long, the effect is slow, and the side effects are large, and the patient is prone to drug dependence; surgery will cause permanent damage to the patient; the interventional vascular stent treatment method has become the current treatment for cardiovascular diseases because of its small trauma and good effect. Narrow new approach.
血管支架是指在管腔球囊扩张成形的基础上，在病变段置入内支架以达到支撑狭窄闭塞段血管，减少血管弹性回缩及再塑形，保持管腔血流通畅的目的。现有血管支架的形式多种多样，从制作方法上主要有激光切割支架(发明专利：200910088181.7；发明专利：200910088181.1)、从使用材料上主要有钴基合金支架(发明专利：200910088181.7；发明专利：200910088181.1)、还有药物洗脱支架(发明专利：200910088181.7；发明专利：200910088181.1)等。Vascular stent refers to the placement of internal stents in the diseased segment on the basis of lumen balloon expansion to support the stenotic and occluded segment of the vessel, reduce elastic recoil and reshaping of the vessel, and maintain smooth blood flow in the lumen. There are various forms of existing vascular stents, mainly laser cutting stents in terms of production methods (invention patent: 200910088181.7; invention patent: 200910088181.1), mainly cobalt-based alloy stents in terms of materials used (invention patent: 200910088181.7; invention patent: 200910088181.1), and drug-eluting stents (invention patent: 200910088181.7; invention patent: 200910088181.1), etc.
目前这些支架都存在一些问题：临床上应用的支架千篇一律都是圆柱形，但血管的某些部位并不是圆柱形，近端和远端血管直径相差悬殊，呈圆锥形。在这些部位若采用传统支架，血管所承受的径向扩张力呈不均匀分布，锥形部 位血管的小端承受更大的径向支撑力，容易使血管小端血管壁变薄，产生机械牵拉、异物炎症反应等。而且，近端就无法贴壁良好，由此会大大增加患者未来支架内血栓形成和支架内再狭窄的风险。非对称圆锥形血管支架就能够很好的解决上述问题，能适应血管本身的生理结构，使圆锥形血管病变的术式难度大大下降，增加可操作性，减少手术时间，也减少患者和介入医师的曝光时间。At present, these stents have some problems: the clinically applied stents are all cylindrical, but some parts of the blood vessels are not cylindrical, and the diameters of the proximal and distal blood vessels are very different, and they are conical. If traditional stents are used in these parts, the radial expansion force borne by the blood vessel is unevenly distributed, and the small end of the blood vessel in the tapered part bears a greater radial support force, which will easily thin the vessel wall at the small end of the blood vessel and cause mechanical tension. pull, foreign body inflammatory reaction, etc. Moreover, the proximal end cannot adhere well, which will greatly increase the risk of future in-stent thrombosis and in-stent restenosis in patients. The asymmetric conical vascular stent can solve the above problems very well, and can adapt to the physiological structure of the blood vessel itself, greatly reducing the difficulty of the operation for conical vascular lesions, increasing operability, reducing operation time, and reducing the number of patients and interventional physicians. exposure time.
发明内容Contents of the invention
本实用新型要解决的技术问题是克服上述缺陷，提供一种非对称圆锥形血管支架，提高血管支架在圆锥形血管部位的生理适应性，均衡血管承受的径向扩张力，有效降低再狭窄的发生，为非对称圆锥形血管支架的开发提供良好的平台，以满足临床中对圆锥形血管支架的需要。The technical problem to be solved by the utility model is to overcome the above defects, provide an asymmetric conical vascular stent, improve the physiological adaptability of the vascular stent in the conical blood vessel, balance the radial expansion force of the blood vessel, and effectively reduce the risk of restenosis. It provides a good platform for the development of asymmetric conical vascular stents to meet the clinical needs of conical vascular stents.
为解决上述问题，本实用新型所采用的技术方案是：In order to solve the above problems, the technical solution adopted in the utility model is:
一种非对称圆锥形血管支架，其特征在于：包括依次连接的若干个环形支撑单元以及连接在相邻环形支撑单元之间的连接单元；所述依次连接的环形支撑单元的长度依次减小，使得整个血管支架呈圆锥形机构。An asymmetric conical vascular stent is characterized in that: it includes several annular support units connected in sequence and connecting units connected between adjacent annular support units; the lengths of the sequentially connected annular support units decrease successively, The whole blood vessel stent is made to be a conical structure.
作为一种优化的技术方案，所述环形支撑单元包括若干首尾相连的U行结构的支撑体，所述的相邻环形支撑单元之间间隔排列的支撑体之间通过连接单元连接；所述支撑体轴向长度依次减小，撑开后会形成圆锥形，直径变化率在1％～50％之间。As an optimized technical solution, the ring-shaped support unit includes a plurality of support bodies connected end to end in a U-row structure, and the support bodies arranged at intervals between adjacent ring-shaped support units are connected by connecting units; The axial length of the body decreases successively, and it will form a conical shape after stretching, and the diameter change rate is between 1% and 50%.
作为一种优化的技术方案，所述连接单元包括若干连接体，连接体可采用直线结构，或者是V形机构，或W形机构，或S形机构，或N形结构。As an optimized technical solution, the connecting unit includes several connecting bodies, and the connecting bodies can adopt a linear structure, or a V-shaped mechanism, or a W-shaped mechanism, or an S-shaped mechanism, or an N-shaped structure.
作为一种优化的技术方案，所述环形支撑单元包括有5-12个U形结构组成的支撑体，所述的连接体的数目为4-12个。As an optimized technical solution, the annular supporting unit includes 5-12 supporting bodies composed of U-shaped structures, and the number of connecting bodies is 4-12.
由于采用了上述技术方案，与现有技术相比，本实用新型扩张后自然形成 圆锥形，能有效提高支架在圆锥形血管部位的生理适应性，均衡支架的支撑力，从而保证血管支架植入时的柔顺性，并能很好的解决圆锥部位血管夹层病变的处理，有效防止血管内的再狭窄。具有良好的柔韧性、维持血管通畅的支撑强度，且能承受血液流动引起的疲劳载荷。Due to the adoption of the above technical solution, compared with the prior art, the utility model naturally forms a conical shape after expansion, which can effectively improve the physiological adaptability of the stent in the conical blood vessel, and balance the supporting force of the stent, thereby ensuring the implantation of the vascular stent The flexibility of the time, and can well solve the treatment of vascular dissection lesions in the cone part, and effectively prevent restenosis in the blood vessel. It has good flexibility, support strength to maintain vascular patency, and can withstand fatigue load caused by blood flow.
同时下面结合附图和具体实施方式对本实用新型作进一步说明。At the same time, the utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.
附图说明Description of drawings
图1为本实用新型一种实施例的平面展开结构示意图；Fig. 1 is a schematic diagram of a plane unfolded structure of an embodiment of the utility model;
图2为本实用新型一种实施例的近端局部放大图。Fig. 2 is a partial enlarged view of the proximal end of an embodiment of the present invention.
具体实施方式Detailed ways
实施例：Example:
如图1、图2所示，一种非对称圆锥形血管支架，包括依次连接的若干个环形支撑单元1以及连接在相邻环形支撑单元之间的连接单元2。所述依次连接的环形支撑单元1的长度依次减小，即L1＞L2＞L3＞L4＞L5＞L6＞L7＞L8，使得整个血管支架呈圆锥形机构。As shown in Fig. 1 and Fig. 2, an asymmetric conical vascular stent includes several annular support units 1 connected in sequence and connecting units 2 connected between adjacent annular support units. The lengths of the successively connected annular support units 1 are successively reduced, that is, L1>L2>L3>L4>L5>L6>L7>L8, so that the whole vascular stent has a conical structure.
在本实施例中，所述环形支撑单元1包括若干首尾相连的U行结构的支撑体，所述的相邻环形支撑单元1之间间隔排列的支撑体之间通过连接单元连接。所述支撑体轴向长度依次减小，撑开后会形成圆锥形，直径变化率在1％～50％之间。In this embodiment, the ring-shaped support unit 1 includes several support bodies connected end-to-end in a U-row structure, and the support bodies arranged at intervals between adjacent ring-shaped support units 1 are connected by connecting units. The axial length of the supporting body decreases successively, and forms a conical shape after stretching, and the diameter change rate is between 1% and 50%.
所述连接单元2包括若干连接体，连接体可采用直线结构，或者是V形机构，或W形机构，或S形机构，或N形结构The connecting unit 2 includes several connecting bodies, and the connecting bodies can adopt a linear structure, or a V-shaped mechanism, or a W-shaped mechanism, or an S-shaped mechanism, or an N-shaped structure
所述环形支撑单元1包括有5-12个U形结构组成的支撑体，所述的连接体的数目为4-12个。The annular supporting unit 1 includes 5-12 supporting bodies composed of U-shaped structures, and the number of connecting bodies is 4-12.
所述的支撑体由不锈钢、钴铬合金、镍钛合金、可生物降解聚合物材料、 可生物降解的金属、纯镁、镁合金、纯铁或铁合金中的一种或几种材质制成。The support body is made of one or more materials among stainless steel, cobalt-chromium alloy, nickel-titanium alloy, biodegradable polymer material, biodegradable metal, pure magnesium, magnesium alloy, pure iron or iron alloy.
本实用新型的尺寸没有特别的限制，在不扩张的情况下，非对称圆锥形血管支架长度约为5～30mm，扩张后的直径约为1.5～6.0mm的范围内较为理想。非对称圆锥形血管支架的一个支撑体的长度，一般约为0.5～2.0mm，连接体的长度约为0.1～2.0mm，最为理想长度是0.2～1.0mm。The size of the utility model is not particularly limited. In the case of no expansion, the length of the asymmetric conical vascular stent is about 5-30 mm, and the diameter after expansion is about 1.5-6.0 mm, which is more ideal. The length of a support body of the asymmetric conical vascular stent is generally about 0.5-2.0 mm, and the length of the connecting body is about 0.1-2.0 mm, and the most ideal length is 0.2-1.0 mm.
本实用新型扩张后自然形成圆锥形，能有效提高支架在圆锥形血管部位的生理适应性，均衡支架的支撑力，从而保证血管支架植入时的柔顺性，并能很好的解决圆锥部位血管夹层病变的处理，有效防止血管内的再狭窄。具有良好的柔韧性、维持血管通畅的支撑强度，且能承受血液流动引起的疲劳载荷。The utility model naturally forms a conical shape after being expanded, which can effectively improve the physiological adaptability of the stent in the conical vascular part, balance the supporting force of the stent, thereby ensure the flexibility of the vascular stent when it is implanted, and can well solve the problem of the conical part of the blood vessel. The treatment of dissection lesions can effectively prevent restenosis in blood vessels. It has good flexibility, support strength to maintain vascular patency, and can withstand fatigue load caused by blood flow.
本实用新型不局限于上述的优选实施方式，任何人应该得知在本实用新型的启示下做出的结构变化，凡是与本实用新型具有相同或者相近似的技术方案，均属于本实用新型的保护范围。The utility model is not limited to the preferred embodiment described above, and anyone should know that the structural changes made under the inspiration of the utility model, and all technical solutions that are the same as or similar to the utility model, all belong to the utility model protected range.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420345878.4UCN203988521U (en) | 2014-06-24 | 2014-06-24 | A kind of asymmetric conical intravascular stent |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420345878.4UCN203988521U (en) | 2014-06-24 | 2014-06-24 | A kind of asymmetric conical intravascular stent |
| Publication Number | Publication Date |
|---|---|
| CN203988521Utrue CN203988521U (en) | 2014-12-10 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420345878.4UExpired - Fee RelatedCN203988521U (en) | 2014-06-24 | 2014-06-24 | A kind of asymmetric conical intravascular stent |
| Country | Link |
|---|---|
| CN (1) | CN203988521U (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105726174A (en)* | 2016-04-27 | 2016-07-06 | 苏州天鸿盛捷医疗器械有限公司 | Intravascular stent and preparation method and application thereof |
| CN106137484A (en)* | 2016-08-01 | 2016-11-23 | 江苏大学 | A kind of self-expansion type conical blood vessel support |
| US10695201B2 (en) | 2016-04-27 | 2020-06-30 | Suzhou Venmed Technology Co., Ltd. | Intravascular stent, preparation method and use thereof |
| US11471309B2 (en) | 2016-04-27 | 2022-10-18 | Suzhou Venmed Technology Co., Ltd. | Intravascular stent, preparation method and use thereof |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105726174A (en)* | 2016-04-27 | 2016-07-06 | 苏州天鸿盛捷医疗器械有限公司 | Intravascular stent and preparation method and application thereof |
| US10695201B2 (en) | 2016-04-27 | 2020-06-30 | Suzhou Venmed Technology Co., Ltd. | Intravascular stent, preparation method and use thereof |
| US11471309B2 (en) | 2016-04-27 | 2022-10-18 | Suzhou Venmed Technology Co., Ltd. | Intravascular stent, preparation method and use thereof |
| CN106137484A (en)* | 2016-08-01 | 2016-11-23 | 江苏大学 | A kind of self-expansion type conical blood vessel support |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | Granted publication date:20141210 Termination date:20150624 | |
| EXPY | Termination of patent right or utility model |