US 12,465,397 B2
Method and system for gas maintenance to a body cavity using a trocar
Carl M. Geisz, Edina, MN (US)
Assigned to Lexion Medical, LLC, St. Paul, MN (US)
Filed by Lexion Medical, LLC, St. Paul, MN (US)
Filed on Jan. 16, 2024, as Appl. No. 18/414,088.
Application 18/414,088 is a division of application No. 17/009,271, filed on Sep. 1, 2020, granted, now 11,896,262.
Application 17/009,271 is a continuation of application No. 16/271,072, filed on Feb. 8, 2019, granted, now 10,799,266, issued on Oct. 13, 2020.
Application 16/271,072 is a continuation in part of application No. 14/792,873, filed on Jul. 7, 2015, granted, now 10,238,421, issued on Mar. 26, 2019.
Prior Publication US 2024/0148407 A1, May 9, 2024
Int. Cl. A61B 17/34 (2006.01); A61M 13/00 (2006.01); A61M 16/10 (2006.01)
CPC A61B 17/3421 (2013.01) [A61B 17/3474 (2013.01); A61B 17/3417 (2013.01); A61B 2218/008 (2013.01); A61M 13/003 (2013.01); A61M 13/006 (2014.02); A61M 16/105 (2013.01); A61M 2205/3344 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A method comprising:
positioning a distal portion of a trocar into a patient cavity, the trocar comprising an outer tubular member disposed about an inner tubular member, wherein:
the inner tubular member is formed with an opening at the distal portion and an opening at a proximal portion of the trocar, the openings being adapted to provide access to the patient cavity, wherein the inner tubular member further comprises a seal to deter the escape of gasses through the proximal portion of the trocar;
the inner tubular member is separated from the outer tubular member by an inner wall,
and wherein the trocar further comprises a first gas tubing connection fluidly connected to a lumen of the inner tubular member and
wherein the trocar further comprises a second gas tubing connection fluidly connected to a lumen of the outer tubular member;
supplying an insufflation gas to the patient cavity through the outer tubular member via the second gas tubing connection; and
removing smoke from the patient cavity through the inner tubular member via the first gas tubing connection, wherein a vacuum source is coupled to the first gas tubing connection.