Richenbacher W E, Marks J D
Department of Surgery, University of Iowa Hospitals and Clinics, Iowa City 52242, USA.
Artif Organs. 1995 Jun;19(6):519-24. doi: 10.1111/j.1525-1594.1995.tb02372.x.
The successful use of mechanical ventricular assistance is, in large part, dependent upon easy insertion of well designed inflow and outflow cannulas. This manuscript describes a family of cannulas specifically designed for use in a nonpulsatile ventricular assist device (VAD) circuit. Although a variety of commercially available cannulas can be employed in a nonpulsatile VAD circuit, the cannulas described in this manuscript possess a number of unique design features. The reinforced thin-walled design and end hole construction optimize fluid flow characteristics in both the inflow and outflow cannula. The extended length allows the cannulas to transverse the skin at a point far distant from the mediastinum, reducing the potential for ascending cannula site infection. The purpose of this manuscript is not to review all cannulas available for nonpulsatile VAD circuits, but rather to describe in detail a family of cannulas that are ideal VAD cannulas based on their design characteristics. In addition individual cardiac surgeons implant very few of these devices annually. Thus the advantages and disadvantages of common cannulation sites and a proven technique for cannula insertion will also be presented.
机械心室辅助的成功应用在很大程度上取决于能否轻松插入精心设计的流入和流出插管。本文描述了专门为非搏动性心室辅助装置（VAD）回路设计的一系列插管。虽然各种市售插管可用于非搏动性VAD回路，但本文所述的插管具有许多独特的设计特点。强化薄壁设计和端孔结构优化了流入和流出插管中的流体流动特性。延长的长度使插管能够在远离纵隔的一点穿过皮肤，降低了插管部位上行感染的可能性。本文的目的不是回顾所有可用于非搏动性VAD回路的插管，而是详细描述基于其设计特点的理想VAD插管系列。此外，个别心脏外科医生每年植入的此类装置很少。因此，还将介绍常见插管部位的优缺点以及一种经证实的插管插入技术。
