Infusion-suction (I/S) cassette provided with suction system having both a peristaltic or volumetric pump and a pressure sensitive (or Venturi) pump

Abstract

The present invention relates to an infusion—suction (I/a) cassette ( 20 ) provided with suction system having both a peristaltic or volumetric pump ( 21 ) and a pressure sensitive (or Venturi) pump ( 30 ), comprising a fluid suction line ( 27 ) from the surgical handpiece, a vacuum sensor ( 22 ), a valve ( 29 ) blocking the passive suction, a collection tank ( 25 ), a feeding line ( 28 ) for a sterile irrigation solution, a first passage valve ( 23 ) for the irrigation solution and a second valve ( 24 ) for interruption of the passage of the irrigation solution, a handpiece irrigation line ( 26 ), a peristaltic or in any case volumetric line ( 21 ), about which the suction line passes, and a pressure sensitive pump ( 30 ), connected to the suction line ( 27 ) by a vacuum sensor ( 22 ), activation of the peristaltic or in any case volumetric pump ( 21 ) involving the closure of said passive suction blocking valve ( 29 ) and the activation of said pressure sensitive pump ( 30 ), the activation of the pressure sensitive pump ( 30 ) involving the deactivation of the peristaltic or in any case volumetric pump ( 21 ), with the interruption of the suction line ( 31 ) about the same, and consequent deviation of the suction line through said passive suction blocking valve ( 29 ).

1 . infusion—suction (I/a) cassette provided with suction system having both a peristaltic or volumetric pump and a pressure sensitive (or Venturi) pump, characterised in that it comprises a fluid suction line from the surgical handpiece, a vacuum sensor, a valve blocking the passive suction, a collection tank, a feeding line for a sterile irrigation solution, a first passage valve for the irrigation solution and a second valve for interruption of the passage of the irrigation solution, a handpiece irrigation line, a peristaltic or in any case volumetric line, about which the suction line passes, and a pressure sensitive pump, connected to the suction line by a vacuum sensor, activation of the peristaltic or in any case volumetric pump involving the closure of said passive suction blocking valve and the activation of said pressure sensitive pump, the activation of the pressure sensitive pump involving the deactivation of the peristaltic or in any case volumetric pump, with the interruption of the suction line about the same, and consequent deviation of the suction line through said passive suction blocking valve.  
     
     
         2 . Infusion—suction (I/S) cassette according to  claim 1 , characterised in that said pressure sensitive pump is a venturi pump.  
     
     
         3 . Infusion—suction (I/S) cassette according to  claim 1  or  2 , characterised in that said first and second valves along the irrigation line are of the membrane kind.  
     
     
         4 . Infusion—suction (I/S) cassette according to  claim 1  or  2 , characterised in that said valves are pinch valves or of any other kind suitable to intercept the passage of sterile fluids.  
     
     
         5 . Infusion—suction (I/S) cassette according to one of the preceding claims, characterised in that said cassette is a disposable. cassette.  
     
     
         6 . Infusion—suction (I/S) cassette according to one of the preceding claims, characterised in that the inner channels of the cassette are integrally moulded in the same cassette, or they are comprised of lengths of PVC or other material tube, suitably blocked in a proper position within the cassette.  
     
     
         7 . Infusion—suction (I/S) cassette according to one of the preceding claims, characterised in that it is provided a membrane coupling between the suction line and the vacuum sensor.  
     
     
         8 . Infusion—suction (I/S) cassette according to each one of the preceding claims, substantially as illustrated and described.