Patents by Inventor Lester J. Van Ess

Lester J. Van Ess has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7101383
    Abstract: A laparoscopic instrument is provided which may be used for propelling a foreign body along an anatomical duct for accessing and removing the foreign body from a patient during surgery. The instrument includes a housing, an elongated body connected to the housing, and an operative tip. The housing includes a first axial bore, a first actuator rod disposed for axial movement within the first axial bore, and an actuator connected to the first actuator rod. The elongated body includes a second axial bore and a second actuator rod connected to the first actuator rod and disposed for axial movement within the second axial bore. The tip includes first and second jaws connected to the elongated body for movement in response to axial movement of the second actuator rod between an open position and a closed position. Each jaw has a respective roller mounted thereon for free rotational movement.
    Type: Grant
    Filed: November 26, 2003
    Date of Patent: September 5, 2006
    Inventor: Lester J. Van Ess