Irrigation-aspiration apparatus

摘要

In a peristaltic aspiration pump, a plurality of rollers are equally spaced apart from a rotating shaft and rotatable about the rotating shaft. The rollers sequentially compress and occlude an aspiration tube to generate a vacuum pressure within the aspiration tube. An irrigation-aspiration apparatus aspirates tissue to be removed together with an irrigation fluid supplied to an operated part via the aspiration tube, using the peristaltic aspiration pump. The peristaltic aspiration pump is driven under control to change the travelling speed of the roller in accordance with statuses of occluding the aspiration tube.