The utility model relates to a gradual bracket and a balloon expanding catheter, which is composed of a gradual bracket and a balloon expanding catheter. The gradual bracket is a circular grid type. The balloon expanding catheter consists of a balloon, a far-out tube, an inner tube, a connecting tube, a stainless steel near-outside tube, a diffusion stress tube and a connecting piece. Both ends of the balloon are conical and the middle is circular. The head is connected with the inner tube and the tail is connected with the far outer tube. The inner tube runs through the hollow cavity of the balloon and the far outer tube. The tail and the edge of the wall hole are sealed and connected. There are two development points on the surface. The tail of the far outer pipe is connected with the connecting pipe, and the tail of the connecting pipe is connected with the stainless steel near outer pipe. The stainless steel near the tail of the outer tube is connected with the diffusion stress tube, and there are two marking points on the middle surface of the tube. The head of the diffusion stress tube is connected with the connector. Its advantages are: simple structure, reasonable design, convenient use, reduced the probability of coronary restenosis and the risk of over-expansion or poor expansion, and moderate elasticity of stents will not cause damage to the coronary artery.
【技术实现步骤摘要】
渐变型支架
本技术涉及医疗器械
,具体地说,是一种渐变型支架。
技术介绍
经皮冠状动脉内支架植入术是介入治疗冠心病冠状动脉狭窄的首选方法之一,模仿冠状动脉的解剖特点以及其生理特点是研究设计支架的最终目标,接近或完全的解剖学及功能学仿生是对冠脉支架的最高要求。目前,无论是国内还是国外,市面上尚没有一种支架的形态结构能做到在解剖结构上接近或完全仿生。在支架植入术中,不同管径的血管需选用对应管径的支架。目前临床上常用的支架均为管径形态前后一致的圆柱形,而冠状动脉管径从近端至远端逐渐变细,尤其是存在冠脉弥漫性狭窄的患者,在解剖结构上更接近于圆锥体。面对此类患者时多采用植入多个短支架的方法,会一定程度上增加手术时长及难度,且费用高昂;如单用长支架进行治疗,则需要面临冠脉近端到远端管径相差过大、支架管径无法同冠脉管径保持一致的情况,容易造成冠脉过度扩张或扩张不良等情况,增大了手术风险和难度,也有更高的支架植入术后冠脉再狭窄的概率。中国专利文献:CN2592193公开了一种改进型冠状动脉球囊扩张支架,属于一种用于介入治疗技术的经皮穿刺冠状动脉成形术的球囊扩张支架,是一个呈圆柱体状结构的支架,所述的支架壁为网格状镂空壁,其特征在于支架为循环网格;支架整体的一末端网格为单一回路网格线,另一末端网格为双回路网格线;所述的每个网格之间由Z字型的网格线连接。中国专利文献:CN2376312公开了一种经皮冠状动脉球囊扩张术的球囊一支架导管,其结构为在PTCA球囊导管的外面再加一层导管,并在外层导管的端部略短于内层球囊部位设置支架球囊。中国专利文献:CN2423898公开了一种 ...
【技术保护点】
1.一种用于冠状动脉扩张的渐变型支架及球囊扩张导管,其特征在于,所述的渐变型支架及球囊扩张导管由渐变型支架和球囊扩张导管组成,所述的渐变型支架为近端至远端逐渐变细的圆台型,所述的渐变型支架为网格状镂空壁;所述的球囊扩张导管由球囊、远外管、内管、连接管、不锈钢近外管、扩散应力管和连接件组成;所述的球囊远端和近端均为圆锥型、中间为由近端至远端逐渐变细的圆台型,所述的球囊头部与内管密封连接、尾部与远外管密封连接;所述的内管贯穿球囊和远外管的中空腔,与球囊和远外管形成双腔结构;所述的内管头部和球囊的头部密封连接,尾部从连接管上的壁孔穿出并和壁孔边缘密封连接;所述的内管的管面上设有两个显影点;所述的远外管尾部和连接管连接、头部和球囊尾部连接;所述的连接管头部和远外管连接、尾部和不锈钢近外管连接,所述的连接管管面上设有一个壁孔,所述的壁孔边缘和内管密封连接;所述的不锈钢近外管尾部和扩散应力管连接,所述的不锈钢近外管在中间管面上设有两个标记点;所述的扩散应力管头部和连接件连接、尾部和不锈钢近外管连接;所述的连接件头部和扩散应力管连接,尾部开口。
【技术特征摘要】
1.一种用于冠状动脉扩张的渐变型支架及球囊扩张导管,其特征在于,所述的渐变型支架及球囊扩张导管由渐变型支架和球囊扩张导管组成,所述的渐变型支架为近端至远端逐渐变细的圆台型,所述的渐变型支架为网格状镂空壁;所述的球囊扩张导管由球囊、远外管、内管、连接管、不锈钢近外管、扩散应力管和连接件组成;所述的球囊远端和近端均为圆锥型、中间为由近端至远端逐渐变细的圆台型,所述的球囊头部与内管密封连接、尾部与远外管密封连接;所述的内管贯穿球囊和远外管的中空腔,与球囊和远外管形成双腔结构;所述的内管头部和球囊的头部密封连接,尾部从连...
【专利技术属性】
技术研发人员:许嘉鸿,喻溥蛟,解元,汤宇,刘洋,
申请(专利权)人:上海市同济医院,
类型:新型
国别省市:上海,31
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