| 摘要 |
An infusion-aspiration apparatus (10) in which both the infusion and aspiration functions can be controlled by one person. The plungers of the infusion and aspiration syringes (22,30) are each driven by a motor (34) and an associated rack and pinion (14,16 and 18,20) and the two racks and pinions are drivingly coupled together by way of a differential drive gear (44). The gear (44) includes a spider (50) which can be driven by a second motor (58). When the second motor (58) is stationary the aspiration and infusion rates are equal. The second motor (58) can be energised to rotate its shaft in either direction and at variable speeds to vary the aspiration rate in relation to the infusion rate. <IMAGE> |
