Patent ID: 9486241
Filing Date: 2016-11-08
CPC Classification: A61B,A61M

Claim Text:
1. A trocar for performing a procedure on a patient, said trocar comprising: a. a hollow cannula having a distal end and a proximal end; b. a housing having a distal end attached to said proximal end of said cannula and a proximal end having a wall attached thereto, said wall having an aperture therethrough; c. an instrument seal assembly disposed within said housing comprising a first substantially rigid ring, a second substantially rigid ring, and a plurality of separate semicircular seal segments compressed therebetween, each seal segment having a circumference greater than 180 degrees and being adapted to sufficiently seal against instruments positioned through the seal to maintain gas pressure in the abdominal cavity during endoscopic surgical procedures; and d. a zero closure seal disposed distally of and spaced from the instrument seal assembly, the zero closure seal operable to provide a seal in absence of an instrument positioned through the housing.