美CardiacAssist公司推出TandemHeart PTVA系统

 
一种短期体外循环支持系统能够经由皮肤心脏导管手术，在30分钟内提供心脏辅助支持功能。

TandemHeart经由皮肤跨隔膜心室辅助(PTVA)系统是一种左心室辅助设备(LVAD)，设计作为短期循环支持系统，不需要彻底的心肺通路手术。该系统由三个部分组成:TandemHeart泵，提供循环动力将氧合血液从左心房中抽吸出来，推进至全身动脉循环系统；TandemHeart套管组件，将泵通过2条经皮肤通路腹股沟穿刺点连接起来;TandemHeart控制器，为泵提供动力，为泵提供润滑剂，自动系统监测需要引起注意的情况并发出警报。

一种近期投入使用的重量很轻节约空间的辅助控制器，能够配备在床边输液架或者桌子上。该设备主要适用于交流电源(AC)，但是配备的电池储备电源足够使用1小时。TandemHeart PTVA系统是美国CardiacAssist公司(Pittsburgh, PA, USA)产品，已经获得美国食品药品管理(FDA)批准，在6小时之内短期应用。
 
The TandemHeart PTVA System
 
A short-term extracorporeal circulatory support system provides cardiac assistance through a percutaneous cardiac catheterization procedure in as little as 30 minutes.

The TandemHeart percutaneous transseptal ventricular assist (PTVA) system is a left ventricular assist device (LVAD) designed to be used as a short-term circulatory support system for procedures not requiring complete cardiopulmonary bypass. The system is comprised of three elements: The TandemHeart pump provides the circulating power to pull oxygenated blood from the left atrium and to return it to the systemic arterial circulation; the TandemHeart cannula set connects the pump to the body by way of two percutaneous access points in the patient's groin; and the TandemHeart controller provides operating power to the pump, a controlled flow of lubricant to the pump, and automatic system monitoring and alarms indicating conditions that require attention.

A recently introduced lightweight, space-saving escort controller is also available, which can be mounted at bedside, on an intravenous (IV) pole, or on a table top. It is intended primarily for alternating current (AC) power use, but has enough battery back-up power for an hour of operation. The TandemHeart PTVA system is a product of CardiacAssist (Pittsburgh, PA, USA), and has been approved by the U.S. Food and Drug Administration (FDA) for short-term use for up to six hours.