Patents Represented by Law Firm Dressler, Goldsmith, Shore, Sutker & Milnamonw, Ltd.
  • Universal seal for trocar assembly
    Patent number: 5197955
    Abstract: Trocar assembly devices are disclosed that include an improved seal assembly that accommodates instruments having a wide range of diameters. The seal assembly includes a universal seal member that is generally of hourglass shape defining converging and diverging side walls that form a constricted center bore portion therebetween. Various alternative means are provided to either increase or decrease the inner diameter of the center bore portion of the seal member.
    Type: Grant
    Filed: October 18, 1991
    Date of Patent: March 30, 1993
    Assignee: Ethicon, Inc.
    Inventors: Randy R. Stephens, John M. Collins, Robert Farra, Dean Pichon