Systems and methods for conducting smoke evacuation during laparoscopic surgical procedures

Abstract

An insufflation and smoke evacuation system for use during laparoscopic surgical procedures in an abdominal cavity of a patient is disclosed that includes a pump for circulating pressurized gas within the system, and a dual lumen cannula configured to provide access to the abdominal cavity of a patient, which includes a first lumen communicating with a source of insufflation fluid and a second lumen communicating with the pump.

1 - 19 . (canceled) 
     
     
         20 . A dual lumen access device for use during laparoscopic surgical procedures, comprising:
 a) an outer body including a proximal housing defining an interior chamber and an elongated tubular outer cannula extending distally from the proximal housing, the proximal housing including a first flow port and a second flow port;   b) an end cap operatively associated with the proximal housing and including a main access port into the interior chamber of the proximal housing;   c) an inner body including a proximal support seated within the proximal housing and an elongated tubular inner cannula extending distally within the elongated tubular outer cannula, wherein an inner tubular lumen is defined by an interior surface of the inner cannula and an outer annular lumen is defined between an exterior surface of the inner cannula and an interior surface of the outer cannula, and wherein the first flow port communicates with the inner tubular lumen and the second flow port communicates with the outer annular lumen; and   d) a duckbill seal supported within the proximal housing of the outer body in such a manner so as to prevent gas flow between the inner tubular lumen and the main access port, while permitting gas flow between the inner tubular lumen and the first flow port.   
     
     
         21 . The dual lumen access device of  claim 20 , wherein the proximal housing of the outer body is formed integral with the outer cannula of the outer body. 
     
     
         22 . The dual lumen access device of  claim 20 , wherein the proximal support of the inner body is formed integral with the inner cannula of the inner body. 
     
     
         23 . The dual lumen access device of  claim 20 , wherein the end cap is threadably associated with the proximal housing. 
     
     
         24 . The dual lumen access device of  claim 20 , wherein the first flow port is sealingly isolated from the second flow port. 
     
     
         25 . The dual lumen access device of  claim 20 , wherein the first flow port is located proximal to the second flow port. 
     
     
         26 . The dual lumen access device of  claim 20 , wherein an O-ring is operatively associated with the proximal support of the inner body. 
     
     
         27 . The dual lumen access device of  claim 20 , wherein a structure is supported between the end cap and the duckbill seal, below the main access port, which has a central aperture, wherein the diameter of the central aperture is less than the diameter of the main access port.