Patent ID: 9173697
Filing Date: 2015-11-03
Classification: A61B

Abstract:
1. A cannula comprising: a plug section configured to receive an electrically conductive connector; and a tube section electrically coupled to at least a part of the plug section that contacts the electrically conductive connector; wherein the tube section is rigid and comprises a material capable of receiving an electric charge via capacitive coupling; and wherein the tube section comprises in series a proximal main portion, an intermediate tapered portion, and a distal end flared portion, the main portion having an inner diameter that is substantially constant, the tapered portion having an inner diameter that decreases from the inner diameter of at the main portion a proximal end of the tapered portion to a minimum inner diameter at a distal end of the tapered portion, and the flared portion having an inner diameter that increases from the minimum inner diameter of the tapered portion to a distal end of the tube section.