Patents by Inventor Thomas Paulson

Thomas Paulson 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: 20020151854
    Abstract: A dual port syringe has an upper port for connection to a fluid reservoir and a lower port for delivery of the medical fluid under pressure to a patient. A first valve is connected between the fluid reservoir and the upper port, and second valve is connected between the lower port and the patient. During a fill operation, a piston is moved within the syringe to drawn fluid from the reservoir into the syringe through the upper port. During injection operation, the piston moves in an opposite direction to force fluid out of the syringe through the lower port.
    Type: Application
    Filed: June 17, 2002
    Publication date: October 17, 2002
    Inventors: Doug Duchon, Thomas Paulson, Vince Copa, Robert F. Wilson, Jiyan Liu
  • Patent number: 6447481
    Abstract: A dual port syringe has an upper port for connection to a fluid reservoir and a lower port for delivery of the medical fluid under pressure to a patient. A first valve is connected between the fluid reservoir and the upper port, and second valve is connected between the lower port and the patient. During a fill operation, a piston is moved within the syringe to drawn fluid from the reservoir into the syringe through the upper port. During injection operation, the piston moves in an opposite direction to force fluid out of the syringe through the lower port.
    Type: Grant
    Filed: May 22, 2000
    Date of Patent: September 10, 2002
    Assignee: ACIST Medical Systems, Inc.
    Inventors: Doug Duchon, Thomas Paulson, Vince Copa, Robert F. Wilson, Jiyan Liu
  • Patent number: 6344030
    Abstract: A dual port syringe has an upper port for connection to a fluid reservoir and a lower port for delivery of the medical fluid under pressure to a patient. A first valve is connected between the fluid reservoir and the upper port, and second valve is connected between the lower port and the patient. During a fill operation, a piston is moved within the syringe to drawn fluid from the reservoir into the syringe through the upper port. During injection operation, the piston moves in an opposite direction to force fluid out of the syringe through the lower port.
    Type: Grant
    Filed: June 9, 2000
    Date of Patent: February 5, 2002
    Assignee: ACIST Medical Systems, Inc.
    Inventors: Doug Duchon, Thomas Paulson, Vince Copa, Robert F. Wilson, Jiyan Liu
  • Patent number: 6221045
    Abstract: An angiographic injector system includes a manifold and valve which selectively connects either a syringe pump or a low pressure system to a catheter which is inserted into a patient. The valve is normally biased to a state which connects the low pressure system to the catheter for pressure monitoring, saline flushing, or aspirating functions. When an injection is to be made, the valve automatically switches so that the low pressure system is disconnected and not exposed to high pressure, while the syringe pump is connected through the manifold to the catheter.
    Type: Grant
    Filed: October 24, 1997
    Date of Patent: April 24, 2001
    Assignee: Acist Medical Systems, Inc.
    Inventors: Doug Duchon, Thomas Paulson, Robert F. Wilson, Jiyan Liu
  • Patent number: 6099502
    Abstract: A dual port syringe has an upper port for connection to a fluid reservoir and a lower port for delivery of the medical fluid under pressure to a patient. A first valve is connected between the fluid reservoir and the upper port, and second valve is connected between the lower port and the patient. During a fill operation, a piston is moved within the syringe to drawn fluid from the reservoir into the syringe through the upper port. During injection operation, the piston moves in an opposite direction to force fluid out of the syringe through the lower port.
    Type: Grant
    Filed: October 24, 1997
    Date of Patent: August 8, 2000
    Assignee: Acist Medical Systems, Inc.
    Inventors: Doug Duchon, Thomas Paulson, Vince Copa, Robert F. Wilson, Jiyan Liu
  • Patent number: 5699657
    Abstract: Braided line splices and methods of making such splices using an inverted sleeve formed from a part of the braided line sheath, the steps forming the sleeve being at least a part of the method. The sleeve is formed by inverting it (turning it inside out), and then running a braided line part through the sleeve, tensioning the sleeve and having it grip the line part within the sleeve. Variations include making eye splices, both slipping and non-slipping; belt or loop splices, both slipping and non-slipping; and butt splices. Kits may be packaged which provide the necessary items and information to complete such splices.
    Type: Grant
    Filed: May 23, 1996
    Date of Patent: December 23, 1997
    Inventor: William Thomas Paulson
  • Patent number: D412205
    Type: Grant
    Filed: July 29, 1997
    Date of Patent: July 20, 1999
    Assignee: Invasatec, Inc.
    Inventors: Douglas Duchon, Thomas Paulson, Robert F. Wilson, Jiyan Liu