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Development and evaluation of a catheter deliverable artificial aortic heart valve prosthesis and delivery system

机译:开发和评估导管可输送的人造主动脉心脏瓣膜假体和输送系统

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摘要

Currently, malfunctioning heart valves are replaced via highly invasive and costly open-heart procedures. A new alternative approach is a catheter deliverable or percutaneous heart valve. Current PHV prototypes utilize fixed animal tissue as valves. This research investigated the feasibility of an artificial PHV and the development of a delivery system. A left hea11 simulator and a tensile tester were used to characterize the hydrodynamics and mechanics of a novel artificial PHV. Test results showed equal or better in vitro hydrodynamic performance when compared to a St. Jude mechanical valve and an Edwards-Sapien PHV, with a mean pressure drop of u3c15 mmHg and a mean regurgitation of u3c5%. The PHVu27s exceeded requirements for fixation and radial force. The 24 F delivery system successfully delivered and deployed a PHV. The work described herein proves the feasibility of an artificial PHV and delivery system and justifies further investigation into its design and function.
机译:当前,通过高侵入性和昂贵的心脏直视手术来替换有故障的心脏瓣膜。一种新的替代方法是导管可输送或经皮心脏瓣膜。当前的PHV原型利用固定的动物组织作为瓣膜。这项研究调查了人工PHV的可行性和交付系统的发展。左hea11仿真器和拉伸测试仪用于表征新型人工PHV的流体力学和力学。测试结果显示,与St. Jude机械阀和Edwards-Sapien PHV相比,其体外流体力学性能相同或更佳,平均压降为 u3c15 mmHg,平均反流率为 u3c5%。 PHV超出固定和径向力的要求。 24 F交付系统成功交付并部署了PHV。本文描述的工作证明了人工PHV和输送系统的可行性,并有理由进一步研究其设计和功能。

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