Patent ID: 9549756
Date: 2017-01-24
CPC Classifications: A61B

Claim:
1. A medical insertion aid for surgical instruments and/or optical systems, the medical insertion aid comprising: a shank forming an insertion duct, the insertion duct comprising an inner wall, wherein at least one groove extending in a longitudinal duct direction or being longitudinally oriented is formed at the Inner wall of the insertion duct, the shank including in its axial central and/or distal end portion at least one radially outwardly extending fluid flow inhibiting edge that extends in a closed ring shape around the shank and is of one-piece with the shank, wherein the at least one radially outwardly extending fluid flow inhibiting edge forms at least one axially opening circular channel, the channel comprising an opening that is directed distally and/or proximally, and wherein the channel inhibits the flow of fluid by sucking fluid into the channel by capillary action.