| 摘要 |
<p>A flow control system that includes a vacuum device (320) configured to control the level of vacuum applied for urging the flow of aspirated fluid from a surgical site, and a vacuum sensor (350) configured to communicate a signal representative of the sensed vacuum level. A flow sensor control (202) is configured to generate a signal indicative of the rate of aspirated fluid flow. A flow controller (300) monitors the vacuum sensor (350) and the flow measurement device (202), and communicates a requested vacuum level to the vacuum device for establishing a desired vacuum level. The flow controller (300) employs a first feedback loop that compares the actual sensed vacuum level with the requested vacuum level and adjusts the requested vacuum level as needed. The flow controller (300) implements a second feedback loop that compares the actual flow rate of aspiratant with a desired flow rate, and adjusts the requested vacuum level to achieve the desired flow rate.</p> |
