| 摘要 |
A system for controlling fluid flow in a microsurgical handpiece containing a control console (16), a cassette (14) having a body (30) with an open channel (60) integrally formed in the top and a gasket (36) adhered to the top to seal channel (60) fluid-tight and forming a small reservoir (26). A container (28) forming a large reservoir is mounted to body (30). Cassette (14) is retained on console (16). A passage (50) formed in body (30) and having a valve (50a) connects small reservoir (26) with large reservoir (28). A peristaltic pump (46) located in console (16) communicates with small reservoir (26) through a plurality of passages (74, 76, 78) in console (16) and cassette body (30). A venturi or diaphragm pump (44) located in console (16) communicates with large reservoir (28) through a conduit (58, 60) having another valve (58a). A flexible tubing (75) connects handpiece (12) to small reservoir (26) through a passage (76) in body (30). A microprocessor (49) in console (16) controls the operation of valves (50a, 56, 66a, 66a) and pumps (44, 46). |
