Patents Examined by Ralph H. Lewis
  • Patent number: 5078688
    Abstract: A paracentesis catheter system for removing fluids from a patient's abdominal cavity and for administering medication into the abdominal cavity. The catheter system includes a solid stylet, a catheter, a hemostasis valve assembly connected to the catheter, and delivery tubing with a needle connecting the catheter assembly to a stopcock. The stopcock has provisions for connections alternately to a syringe or to a vacuum bottle or drainage bag. The hemostasis valve includes an internal glan, which is compressed to shut off fluid flow through the end of the valve assembly after removing the solid stylet. This causes fluid to be diverted through the side arm tubing and stopcock to a fluid collection container.
    Type: Grant
    Filed: May 28, 1991
    Date of Patent: January 7, 1992
    Assignee: Baxter International Inc.
    Inventors: Richard Lobodzinski, Peter D. Boasberg
  • Patent number: 5024658
    Abstract: A device has an elongated body with a through longitudinally extending passage. An inflatable cuff is provided intermediate the ends of the body, and an inflatable vessel is secured to one end of the body and communicates with the passage. The cuff is mounted for movement on the body and a tube is rigidly and sealingly secured therein for receiving an instrument. An extension of the tube may be provided for carrying out the diagnosis. A method for the diagnosis and treatment of sinusitises is disclosed.
    Type: Grant
    Filed: June 7, 1989
    Date of Patent: June 18, 1991
    Inventors: Vladimir S. Kozlov, Gennady I. Markov, Vladimir P. Bugrov
  • Patent number: 5009636
    Abstract: A dual lumen catheter apparatus and method. The apparatus has an elongated catheter body adapted for insertion into a vein or a fluid-containing body cavity of a patient such as the right atrium of a heart. The catheter body has a septum that runs longitudinally through the interior of the catheter body so as to divide the interior of the catheter into a first and a second lumen. The septum is offset from the longitudinal center axis of the catheter so that the cross-sectional area of the two lumens are of different sizes. The first lumen has a cross-sectional size that is relatively large so that a sufficient volumetric flow rate of blood that is to be oxygenated is able to flow by means of gravity drainage through the first lumen whereas the second lumen is smaller but is still sufficiently large so that an essentially equal volumetric flow rate of blood that has been oxygenated can be returned under pressure through the second lumen.
    Type: Grant
    Filed: December 6, 1989
    Date of Patent: April 23, 1991
    Assignee: The Kendall Company
    Inventors: Ronald W. Wortley, David C. Beattie