Patent ID: 8167790
Filing Date: 2012-05-01
Classification: A61B,A61M

Abstract:
1. An atraumatic sheath comprising: a tube characterized by a distal portion, a proximal portion, an outer surface, an inner surface, an inner diameter and an outer diameter; wherein the inner diameter of said tube is sized and dimensioned to permit fluid flow between the inner surface of the tube and an outer surface of an arthroscopic instrument when the arthroscopic instrument is disposed within the tube; a plurality of ribs extending inwardly from the inner surface of the tube and running longitudinally along the tube; wherein said ribs further define outer lumens between the outer surface of the arthroscopic instrument and the inner surface of the tube; wherein said ribs further comprise flanges, said flanges forming a seal between the ribs and the outer surface of an arthroscopic instrument when the arthroscopic instrument is disposed within the sheath; and a ridge disposed on the outer surface of the tube to prevent the sheath from being easily removed from a surgical site.