Patents by Inventor McClellan M. Walther

McClellan M. Walther 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: 6419639
    Abstract: This invention relates to a surgical device and methods for accessing and retrieving a tissue mass from a body cavity through a minimally invasive laparoscopic procedure. The device consists of a handle comprising an inner rod, which is rotatably engaged within a tubular member, and a loop adapted to hold a surgical bag. The loop comprises first and second bowed leaf elements, wherein the first bowed leaf element is attached to the inner rod and the second bowed leaf element is attached to the tubular member. The device further has a rotatable articulation, such as a hinge, joining the first and second bowed leaf elements, wherein rotation of the inner rod causes the first bowed leaf element to rotate about the articulation, such that the surgical bag may be opened and closed by rotation of the inner rod.
    Type: Grant
    Filed: August 5, 1999
    Date of Patent: July 16, 2002
    Assignee: National Institute of Health
    Inventors: McClellan M. Walther, Frank Harrington
  • Patent number: 5730700
    Abstract: An obturator for measuring incident light in a remote situs such as a body cavity which includes a treatment tubular member through which light is delivered to the remote situs and one or more auxiliary tubular members through which incident light in the remote situs is transmitted to an external light detector. The treatment and auxiliary tubular members are attached to a connector element which is in turn connected to a cystoscope lens port. The treatment and auxiliary tubular members are aligned off-center with respect to the central axis of the obturator so that a cystoscope lens can be inserted in the lens port and pass through the axial center of the obturator. Each auxiliary tubular member receives incident light from a different portion of the remote situs. The apparatus is particularly useful for conducting phototherapy in body cavities and has been demonstrated in the phototherapy treatment of superficial cancer in the bladder.
    Type: Grant
    Filed: January 26, 1996
    Date of Patent: March 24, 1998
    Assignee: The United States of America as represented by the Department of Health and Human Service
    Inventors: McClellan M. Walther, Thomas F. DeLaney, Frank Harrington, Paul D. Smith, Walter S. Friauf
  • Patent number: 5575751
    Abstract: A device for measuring incident light in a remote situs such as a body cavity which includes a central tubular member through which light is delivered to the remote situs and one or more auxiliary tubular members through which incident light in the remote situs is transmitted to a light detector. Each auxiliary tubular member receives incident light from a different portion of the remote situs. The apparatus is particularly useful for conducting phototherapy in body cavities and has been demonstrated in the phototherapy treatment of superficial cancer in a bladder.
    Type: Grant
    Filed: August 22, 1994
    Date of Patent: November 19, 1996
    Assignee: The United States of America as represented by the Department of Health and Human Services
    Inventors: McClellan M. Walther, Thomas F. DeLaney, Frank Harrington, Paul D. Smith, Walter S. Friauf
  • Patent number: 5505687
    Abstract: An obturator for measuring incident light in a remote situs such as a body cavity which includes a treatment tubular member through which light is delivered to the remote situs and one or more auxiliary tubular members through which incident light in the remote situs is transmitted to an external light detector. The treatment and auxiliary tubular members are attached to a connector element which is in turn connected to a cystoscope lens port. The treatment and auxiliary tubular members are aligned off-center with respect to the central axis of the obturator so that a cystoscope lens can be inserted in the lens port and pass through the axial center of the obturator. Each auxiliary tubular member receives incident light from a different portion of the remote situs. The apparatus is particularly useful for conducting phototherapy in body cavities and has been demonstrated in the phototherapy treatment of superficial cancer in the bladder.
    Type: Grant
    Filed: February 27, 1995
    Date of Patent: April 9, 1996
    Assignee: The United States of America as represented by the Department of Health and Human Services
    Inventors: McClellan M. Walther, Thomas F. DeLaney, Frank Harrington, Paul D. Smith, Walter S. Friauf
  • Patent number: 5173509
    Abstract: A method is disclosed for the treatment of hypercalcemia in a patient, by administering to the patient an effective amount of suramin, or an active analogue thereof, for lowering calcium plasma levels in the patient. Human data shows a single course of treatment lowers plasma calcium levels to normal for three months.
    Type: Grant
    Filed: March 29, 1990
    Date of Patent: December 22, 1992
    Assignee: The United States of America as represented by the Department of Health and Human Services
    Inventors: McClellan M. Walther, Renato V. LaRocca, Charles E. Myers, Cy A. Stein, W. Marston Linehan