Patents Assigned to Dennis R. Sleister
  • Incising trocar and cannula assembly
    Patent number: 5522831
    Abstract: An incising trocar and cannula instrument for incising the walls of a body cavity to facilitate inserting the cannula through the wall into the cavity including a trigger operated incising blade and means for driving the blade through body tissue; and, a cannula having a sealing assembly for sealing the instrument during the incising procedure and thereafter when the trocar is removed.
    Type: Grant
    Filed: June 13, 1994
    Date of Patent: June 4, 1996
    Assignee: Dennis R. Sleister
    Inventors: Dennis R. Sleister, John G. Mathews