The utility model provides a bonding type of left atrial appendage occluder, including a support anchor hooks or barbs, the outer surface of the membrane suture is film coated with a liquid adhesive gel. The membrane is microporous membrane, such as polyester film, foam film. The liquid adhesive gel butyl cyanoacrylate, cellulose acetate polymer, polypropylene cyanide or ethylene vinyl alcohol polymer. When the utility model is used, the sealing device is implanted into the human body, and is infiltrated in the gel liquid, then the human body is put into the human body. After the device is opened, the gel liquid is condensed under the change of body temperature, and the gel is bonded with the tissue. The utility model is characterized in that the utility model is characterized in that the utility model is characterized in that the utility model is characterized in that the utility model is characterized in that the utility model is characterized in that: when the occluder is sent into the human body, the utility model is output from the sheath tube, is fixed in the left auricle, and then is fed into a catheter. The utility model will support some traditional occluder barbs or anchor hook removal, avoid barbed will pierce the auricular wall, greatly improving the safety and reliability of the occluder used.
【技术实现步骤摘要】
本技术涉及一种左心耳封堵器,属于医疗器械
技术介绍
心房颤动是最常见的持续性心律失常,随着年龄的增长,房颤发生率不断增加,75岁以上人群可达10%。房颤时心房激动的频率达300~600次/分,心跳频率往往快而且不规则,心房失去有效的收缩功能。房颤时左心耳收缩力下降,再加上左心耳自身的形态特点及左心耳内的肌小梁凹凸不平,使得左心耳内血液产生漩涡和流速减慢,促使血栓形成。非瓣膜病房颤患者左心房血栓90%以上存在于左心耳,血栓脱落后会通过主动脉血管进入脑部动脉血管形成脑栓塞,即脑卒中。针对房颤患者脑卒中的风险,临床上目前主要采用三种方法进行预防治疗,即抗凝药物治疗、外科手术治疗和经皮左心耳封堵治疗。经皮左心耳封堵治疗是指通过经皮穿刺的方式,得用一直径较小的输送鞘管,将一左心耳封堵器输送到位于心脏左心房的左心耳并释放。左心耳封堵器可将左心耳的开口位置封堵,心房内血流不能进入左心耳,因此不能形成血栓,从而达到预防心房颤动诱发血栓栓塞的目的。从2001年开始,经皮左心耳封堵治疗开始投入使用,先后进行了动物实验和临床实验。临床实验表明,左心耳封堵术可有效降低房颤患者脑卒中的发生概率。近几年,经皮左心耳封堵术得到了很大的推广应用,全球内不同的厂家也陆续推出了新的产品,如波士顿科学的watchman、圣犹达的ACP、先健的Lambre公司等。目前的左心耳封堵器基本都采用镍钛合金加高分子材料覆膜制成,镍钛合金主要起固定的作用,高分子材料覆膜主要起到封堵血流的作用。从设计结构上来看,左心耳封堵器主要分为两种类型。第一种是一个塞子的结构,直接放入左心耳内部,塞子上带有 ...
【技术保护点】
一种粘结型左心耳封堵器,其特征在于:包括支架,所述支架外表面缝合有膜,所述膜上涂覆有液体粘结凝胶;所述膜为微孔型膜;所述液体粘结凝胶为氰基丙烯酸正丁酯、醋酸纤维素聚合物、聚丙烯氰或乙烯‑乙烯醇聚合物。
【技术特征摘要】
1.一种粘结型左心耳封堵器,其特征在于:包括支架,所述支架外表面缝合有膜,所述膜上涂覆有液体粘结凝胶;所述膜为微孔型膜;所述液体粘结凝胶为氰基丙烯...
【专利技术属性】
技术研发人员:罗鹏,刘光,李涛,王广卉,杨永森,陈娟,
申请(专利权)人:上海形状记忆合金材料有限公司,
类型:新型
国别省市:上海;31
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