| 摘要 |
<p>An irrigation system and method for providing fluid from a source of irrigating fluid to a surgical site, in particular a surgical site access to which is provided by a small incision or a natural orifice of the body. The irrigation system (8) includes a control unit (20) that is used with a cassette (30). The control unit (20) includes a motor (39) under the control of a controller (38), a sensor (25) for sensing the flow of fluid in the cassette (30), a sensor (25) for sensing pressure in the cassette (30), and a user control panel (42). The cassette (30) includes a fluid flow passageway (64) having an inlet (28) connected to the source (18) of irrigating fluid and an outlet (34) for providing fluid to the surgical site. A pump located in the cassette is driven by the motor. The pump has limited efficiency when presented with back pressure to thereby limit to safe level an amount of pressure that can be delivered to the surgical site. The system may be used to irrigate or distend a surgical site.</p> |
