Foam introduction system including modified port geometry

Abstract

A surgical apparatus for positioning within a tissue tract accessing an underlying body cavity includes a seal anchor member including leading portion, a trailing portion, and an intermediate portion disposed between the leading and trailing portions. The leading portion of the seal anchor member is configured and adapted to ease insertion of the seal anchor member into the tissue tract. Subsequent to insertion of the seal anchor member, the leading portion of the seal anchor member is also configured and adapted to facilitate securing and/or anchoring of the seal anchor member within the tissue tract.

1 . (canceled) 
     
     
         2 . A surgical apparatus for positioning within a tissue tract accessing an underlying body cavity comprising:
 a seal anchor member including a leading portion, a trailing portion, and an intermediate portion disposed between the leading and trailing portions, the seal anchor member defining first and second ports extending between the leading and trailing portions, each of the first and second ports configured to receive a surgical instrument in a sealing relation, the leading portion including first and second positioning members transitionable between a retracted position in which the first and second positioning members extend radially inward and a deployed position in which the first and second positioning members extend radially outward to secure the seal anchor member within the tissue tract, the first and second positioning members biased toward the retracted position.   
     
     
         3 . The surgical apparatus according to  claim 2 , wherein at least one positioning member of the first or second positioning members is operatively connected to the intermediate portion by a living hinge. 
     
     
         4 . The surgical apparatus according to  claim 2 , wherein a surgical instrument inserted through the first port causes the first positioning member to transition from the retracted position to the deployed position. 
     
     
         5 . The surgical apparatus according to  claim 2 , wherein the first and second positioning members diametrically oppose each other. 
     
     
         6 . The surgical apparatus according to  claim 2 , wherein the first and second ports are in registration with the first and second positioning members, respectively. 
     
     
         7 . The surgical apparatus according to  claim 2 , wherein the first and second ports are symmetrically arranged with respect to a central longitudinal axis defined by the seal anchor member. 
     
     
         8 . A surgical apparatus for positioning within a tissue tract accessing an underlying body cavity comprising:
 a seal anchor member including a leading portion, a trailing portion, and an intermediate portion disposed between the leading and trailing portions, the seal anchor member defining first and second ports extending between the leading and trailing portions, the leading portion including first and second positioning members transitionable between a retracted position in which the first and second positioning members are configured to obstruct passage of surgical instruments inserted into the respective first and second ports and a deployed position in which surgical instruments inserted into the respective first and second ports urge the respective first and second positioning members outward to enable passage of at least a portion of the surgical instruments through the seal anchor member, the first and second positioning members biased toward the retracted position.   
     
     
         9 . The surgical apparatus according to  claim 8 , wherein the first and second positioning members in the deployed position are configured to secure the seal anchor member within the tissue tract. 
     
     
         10 . The surgical apparatus according to  claim 8 , wherein the first and second ports are symmetrically arranged with respect to a central longitudinal axis defined by the seal anchor member. 
     
     
         11 . The surgical apparatus according to  claim 8 , wherein the leading portion defines a first diameter when the first and second positioning members are in the retracted position and defines a second diameter larger than the first diameter when the first and second positioning members are in the deployed position. 
     
     
         12 . The surgical apparatus according to  claim 8 , wherein the first and second ports are in registration with the respective first and second positioning members such that insertion of surgical instruments through the respective first and second ports secures the seal anchor member within the tissue tract. 
     
     
         13 . The surgical apparatus according to  claim 8 , wherein the first and second ports are configured to receive respective surgical instruments in a sealing relation. 
     
     
         14 . The surgical apparatus according to  claim 8 , wherein the first and second positioning members extend radially inward in the retracted position. 
     
     
         15 . The surgical apparatus according to  claim 8 , wherein the first and second positioning members extend radially outward in the deployed position to secure the seal anchor member within the tissue tract. 
     
     
         16 . The surgical apparatus according to  claim 8 , wherein at least one positioning member of the first or second positioning members is connected to the intermediate portion. 
     
     
         17 . The surgical apparatus according to  claim 16 , wherein the at least one positioning member of the first or second positioning members is operatively connected to the intermediate portion by a living hinge.