Patents by Inventor Christian Dufresne

Christian Dufresne 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).

  • Publication number: 20130253445
    Abstract: Multi-lumen catheter devices having at least one split-tipped end are disclosed, together with methods of forming such split tip catheters. In one aspect of the invention, the manufacturing methods can include the steps of: providing a catheter body having at least a first and a second internal lumen extending longitudinally through the catheter body; removing a distal portion of the catheter body to form a first distal tip segment such that the first lumen extends longitudinally within this tip segment beyond the second lumen; and joining a second lumen tip segment to the catheter body in communication with the second lumen. The second tip segment can be joined to the catheter body such that it is at least partially separated from the first tip segment and, in some embodiments, preferably diverges at an angle relative to the first tip segment.
    Type: Application
    Filed: May 17, 2013
    Publication date: September 26, 2013
    Applicant: BARD ACCESS SYSTEMS, INC.
    Inventors: Shekhar D. Nimkar, Christian Dufresne, SR., Eric Tobin
  • Patent number: 8500939
    Abstract: Multi-lumen catheter devices having at least one split-tipped end are disclosed, together with methods of forming such split tip catheters. In one aspect of the invention, the manufacturing methods can include the steps of: providing a catheter body having at least a first and a second internal lumen extending longitudinally through the catheter body; removing a distal portion of the catheter body to form a first distal tip segment such that the first lumen extends longitudinally within this tip segment beyond the second lumen; and joining a second lumen tip segment to the catheter body in communication with the second lumen. The second tip segment can be joined to the catheter body such that it is at least partially separated from the first tip segment and, in some embodiments, preferably diverges at an angle relative to the first tip segment.
    Type: Grant
    Filed: October 2, 2008
    Date of Patent: August 6, 2013
    Assignee: Bard Access Systems, Inc.
    Inventors: Shekhar D. Nimkar, Christian Dufresne, Sr., Eric Tobin
  • Publication number: 20090204052
    Abstract: Multi-lumen catheter devices having at least one split-tipped end are disclosed, together with methods of forming such split tip catheters. In one aspect of the invention, the manufacturing methods can include the steps of: providing a catheter body having at least a first and a second internal lumen extending longitudinally through the catheter body; removing a distal portion of the catheter body to form a first distal tip segment such that the first lumen extends longitudinally within this tip segment beyond the second lumen; and joining a second lumen tip segment to the catheter body in communication with the second lumen. The second tip segment can be joined to the catheter body such that it is at least partially separated from the first tip segment and, in some embodiments, preferably diverges at an angle relative to the first tip segment.
    Type: Application
    Filed: October 2, 2008
    Publication date: August 13, 2009
    Applicant: SPIRE CORPORATION
    Inventors: Shekhar D. Nimkar, Christian Dufresne, Eric Tobin