Ward Matthew S, Georgescu Dan, Olson Randall J
Department of Ophthalmology and Visual Sciences, Moran Eye Center, University of Utah, Salt Lake City, UT 84132, USA.
J Cataract Refract Surg. 2008 Aug;34(8):1400-2. doi: 10.1016/j.jcrs.2008.04.042.
To assess how flow and bottle height affect postocclusion surge in the Infiniti (Alcon, Inc.) and Millennium (Bausch & Lomb) peristaltic machines.
John A. Moran Eye Center Clinical Laboratories, University of Utah, Salt Lake City, Utah.
Postocclusion anterior chamber depth changes were measured in human eye-bank eyes using A-scan. Surge was simulated by clamping the aspiration tubing and releasing it at maximum vacuum. In both machines, surge was measured (1) with aspiration held constant at 12 mL/min and bottle heights at 60, 120, and 180 cm and (2) with bottle height held constant at 60 cm and aspiration rates at 12, 24, and 36 mL/min.
Surge decreased approximately 40% with each 60 cm increase in bottle height in the Infiniti. It was constant at all bottle heights in the Millennium. At 12 and 24 mL/min aspiration rates, surge in the Millennium was less than half that in the Infiniti (P<.001).
Postocclusion surge decreased linearly with increasing bottle height in the Infiniti system and was relatively constant with increasing bottle height in the Millennium system. The Millennium may offer a more stable phacoemulsification platform with respect to surge at a higher aspiration rate.
评估流速和瓶高如何影响Infiniti（爱尔康公司）和Millennium（博士伦公司）蠕动式超声乳化仪的阻塞后浪涌。
犹他大学盐湖城分校约翰·A·莫兰眼科中心临床实验室。
使用A超测量人眼库眼球的阻塞后前房深度变化。通过夹住抽吸管道并在最大真空度下释放来模拟浪涌。在两台仪器中，测量浪涌的情况如下：(1) 抽吸速率保持在12 mL/分钟不变，瓶高分别为60、120和180厘米；(2) 瓶高保持在60厘米不变，抽吸速率分别为12、24和36 mL/分钟。
在Infiniti中瓶高每增加60厘米，浪涌大约降低40%。在Millennium中，浪涌在所有瓶高下保持恒定。在抽吸速率为12和24 mL/分钟时，Millennium中的浪涌不到Infiniti中的一半（P<0.001）。
在Infiniti系统中，阻塞后浪涌随瓶高增加呈线性降低，而在Millennium系统中，浪涌随瓶高增加相对恒定。就较高抽吸速率下的浪涌而言，Millennium可能提供一个更稳定的超声乳化平台。
