The invention relates to a medical instrument, in particular, an implantable shaft bleeding pump without a rear guide. It includes a pump casing, impeller, pump sleeve, drive coil, leading leaf, the drive coil is arranged on the exterior of the silicon steel sleeve pump stator, a stator for drive; guide vane installed in front of the pump barrel, the pump sleeve is arranged at the rear end of cantilever bracket; impeller is installed between the front guide vane and the cantilever bracket both ends of the supporting structure, the impeller and guide vane and the hemisphere after the cantilever bracket is connected with the directional grid installed in the heat conduction; between the pump shell and pump sleeve. The posterior cantilever support is used instead of the rear guide blade to avoid blood damage and thrombosis caused by the impact of blood on the blade. There is an internal spiral catheter connected to the blood pump outlet and the aorta, which has spiral flow path opposite to the impeller rotation direction, which is used to increase the tangential velocity of blood flow, increase the scour of blood to the tube wall, prevent the deposition of blood components and form thrombosis.
【技术实现步骤摘要】
一种无后导叶植入式轴流血泵
本专利技术涉及一种医疗器械,具体的说是一种无后导叶植入式轴流血泵。
技术介绍
心力衰竭(心衰)是一种严重威胁人类健康的疾病。针对晚期心衰最有效的治疗方法是心脏移植与人工心脏辅助治疗。人工心脏已经逐渐成为了治疗心力衰竭的有效方法之一,而其产生的血栓是限制人工心脏临床应用的关键并发症。为此,专利2014102513825设计了悬空后导叶,增加了对后导叶叶片的冲刷,从而避免血栓形成。相似的专利201410379867.2设计了具有悬臂结构的后导叶,减小整体血泵体积,增加后导叶的冲刷,从而减小血栓形成。虽然上述专利技术在一定程度上减少了血栓的形成风险,但是依然存在以下问题。首先,后导叶的叶片螺旋方向与血泵叶片方向相反,从而造成血液会直接撞击到后导叶的叶片,从而造成血细胞损伤而极易诱发血栓形成。其次,通过后导叶输出的血流切向速度衰减,从而降低了对于输出导管的冲刷,从而造成输出导管处的血流迟缓沉积而诱发血栓。上述问题限制了人工心脏的临床应用与可靠性。
技术实现思路
本专利技术的目的是提供一种能减少了血液破坏及血栓形成的一种无后导叶植入式轴流血泵。本专利 ...
【技术保护点】
一种无后导叶植入式轴流血泵,包括泵外壳、泵套筒、叶轮、驱动线圈、前导叶,其特征是:驱动线圈安装在泵套筒的外部的定子硅钢上,用作驱动定子;在泵套筒的前端安装着前导叶,泵套筒的后端安装有后悬臂支架;叶轮安装在前导叶与后悬臂支架之间,叶轮两端采用半球支撑结构与前导叶以及后悬臂支架相连;在泵外壳与泵套筒之间安装有定向到热栅格。
【技术特征摘要】
1.一种无后导叶植入式轴流血泵,包括泵外壳、泵套筒、叶轮、驱动线圈、前导叶,其特征是:驱动线圈安装在泵套筒的外部的定子硅钢上,用作驱动定子;在泵套筒的前端安装着前导叶,泵套筒的后端安装有后悬臂支架;叶轮安装在前导叶与后悬臂支架之间,叶轮两端采用半球支撑结构与前导叶以及后悬臂支架相连;在泵外壳与泵套筒之间安装有定向到热栅格。2.根据权利要求1所述的一种无后导叶植入式轴...
【专利技术属性】
技术研发人员:沈喆,陈海丰,田步升,祝会占,
申请(专利权)人:长治市久安人工心脏科技开发有限公司,
类型:发明
国别省市:山西,14
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