Patent ID: 7500947
Filing Date: 2009-03-10
Classification: A61B,A61M

Abstract:
1. An atraumatic sheath comprising: a tube characterized by a wall, a distal section having a distal tip with a first diameter, a proximal section, 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; wherein the first diameter of the distal tip of the tube is less than an outer diameter of the arthroscopic instrument, forming a seal at the distal tip of the tube 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 lumens between the outer surface of the arthroscopic instrument and inner surface of the tube; and wherein said distal section further comprises a plurality of holes in a sidewall of the distal section of the tube, said holes in fluid communication with one or more outer lumens and a surgical site.