Patents by Inventor Douglas J. Duchon

Douglas J. Duchon 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: 20080183131
    Abstract: A system and method is provided including a fluid communications network that sends priming and waste fluid to a waste bag, obviating the presence of open fluid containers in an operating room or catheter lab. The fluid communications network is constructed and arranged to allow nearly automated priming and bubble removal, thereby reducing the possibility of operator caused errors in set-up and reducing the time required for set-up. The fluid communications network is useable for attachment to a balloon catheter for inflation thereof. In order to provide greater control and automation of the inflation of the balloon catheter, a conversion kit is provided that can be used to convert an existing automatic injector into an injector useable for automatically controlling the small amount of injection fluid typically associated with balloon catheters.
    Type: Application
    Filed: March 31, 2008
    Publication date: July 31, 2008
    Applicant: ACIST MEDICAL SYSTEMS, INC.
    Inventors: Douglas J. Duchon, Robert F. Wilson
  • Patent number: 7389788
    Abstract: The present invention presents various novel approaches to solving the problems inherent in measuring biological pressures in high pressure systems. Thus, to protect a pressure transducer exposed to fluid flows at higher pressures than its overpressure rating, a novel valve is used that closes a protected leg in which the transducer is located. The various exemplary embodiments of such valves each have a high pressure input, one or more low pressure inputs, and an output. In operation, when a high pressure fluid flow occurs at a high pressure input, such valves automatically close the low pressure inputs. Alternatively, a novel transducer system is presented, which automatically limits the effective pressure sensed by a transducer to a certain maximum.
    Type: Grant
    Filed: December 9, 2002
    Date of Patent: June 24, 2008
    Assignee: Acist Medical Systems, Inc.
    Inventors: Robert F. Wilson, Douglas J. Duchon, Mark Gabbard, Khader Mohiuddin, Thomas McPeak
  • Publication number: 20080103437
    Abstract: An angiographic injector system and a method of controllably delivering medical fluid to a patient from an angiographic injector system are disclosed. A multiple processor control system is used to actively control the injection process and to monitor sensed functions of the system. The multiple processors provide dual redundancy safety circuits for critical control functions such as syringe motor drive speed and current. A motor/servo-amplifier nested control function is also disclosed. A unique method and apparatus are disclosed for establishing injection parameter default values just prior to an injection procedure that are based on physiological values of the patient to be treated. The injector system uses an interactive display panel that presents sequenced set-up screens to the user and which enables the user to select injection procedures, parameters and other modes of operation directly through the interactive panel.
    Type: Application
    Filed: May 31, 2007
    Publication date: May 1, 2008
    Applicant: ACIST MEDICAL SYSTEMS, INC.
    Inventors: Douglas J. Duchon, James P. Smith, Katherine H. Anderson, Robert F. Wilson, Jiyan Liu
  • Patent number: 7357785
    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: November 8, 2006
    Date of Patent: April 15, 2008
    Assignee: Acist Medical Systems, Inc.
    Inventors: Douglas J. Duchon, Thomas Paulson, Vince Copa, Robert F. Wilson, Jiyan Liu
  • Patent number: 7320325
    Abstract: An apparatus and method of use or treatment are disclosed for creating intrauterine adhesions resulting in amenorrhea. In particular, the apparatus relates to an easily deployed intrauterine implant that readily and consistently reduces or eliminates abnormal intrauterine bleeding. In addition, the apparatus is also used as a uterine marker device for visualizing endometrial tissue thickness and potential changes. The method of the present invention serves as a supplement to or a replacement for conventional hysterectomy or ablation/resection procedures used to treat menorrhagia.
    Type: Grant
    Filed: December 3, 2003
    Date of Patent: January 22, 2008
    Assignee: Impres Medical, Inc.
    Inventors: Douglas J. Duchon, James Presthus
  • Patent number: 7308300
    Abstract: A method of preventing extravasation of contrast agent during a computed tomography injection. An automatic injector device facilitates ease of accomplishing the method. The method includes establishing the absence of extravasation using an absorbable injectate, such as saline, prior to injecting the contrast agent. The device includes a computerized injector head capable of switching between two injectates without physical human intervention. The device is controlled by a remote operating panel located in a control room that is protected from X-ray radiation. The device includes various software driven safety features that prevent the occurrence of unsafe conditions.
    Type: Grant
    Filed: April 19, 2002
    Date of Patent: December 11, 2007
    Assignee: Acist Medical Systems, Inc.
    Inventors: Glenn Toews, Chris Szczech, Thomas J. McPeak, Douglas J. Duchon
  • Patent number: 7267666
    Abstract: An angiographic injector system and a method of controllably delivering medical fluid to a patient from an angiographic injector system are disclosed. A multiple processor control system is used to actively control the injection process and to monitor sensed functions of the system. The multiple processors provide dual redundancy safety circuits for critical control functions such as syringe motor drive speed and current. A motor/servo-amplifier nested control function is also disclosed. A unique method and apparatus are disclosed for establishing injection parameter default values just prior to an injection procedure that are based on physiological values of the patient to be treated. The injector system uses an interactive display panel that presents sequenced set-up screens to the user and which enables the user to select injection procedures, parameters and other modes of operation directly through the interactive panel.
    Type: Grant
    Filed: November 7, 1997
    Date of Patent: September 11, 2007
    Assignee: Acist Medical Systems, Inc.
    Inventors: Douglas J. Duchon, James P. Smith, Katherine H. Anderson, Robert F. Wilson, Jiyan Liu
  • Patent number: 7128729
    Abstract: An angiographic injector system and a method of controllably delivering medical fluid to a patient from an angiographic injector system are disclosed. A multiple processor control system is used to actively control the injection process and to monitor sensed functions of the system. The multiple processors provide dual redundancy safety circuits for critical control functions such as syringe motor drive speed and current. A motor/servo-amplifier nested control function is also disclosed. A unique method and apparatus are disclosed for establishing injection parameter default values just prior to an injection procedure that are based on physiological values of the patient to be treated. The injector system uses an interactive display panel that presents sequenced set-up screens to the user and which enables the user to select injection procedures, parameters and other modes of operation directly through the interactive panel.
    Type: Grant
    Filed: June 14, 2002
    Date of Patent: October 31, 2006
    Assignee: Acist Medical Systems, Inc.
    Inventors: Douglas J. Duchon, James P. Smith, Katherine H Anderson, Robert F. Wilson, Jiyan Liu
  • Publication number: 20040215490
    Abstract: An integrated medical information management and medical device control system and method are described that links multiple users and multiple medical devices together in a coordinated fashion. The linkage of users and medical devices is accomplished using a bi-directional network and a centralized host system. Users of the system are able to communicate with each other, operate medical devices from remote locations, access information from diverse sources automatically monitor a patent's status.
    Type: Application
    Filed: May 18, 2004
    Publication date: October 28, 2004
    Inventors: Douglas J. Duchon, Robert F. Wilson
  • Publication number: 20040193043
    Abstract: An apparatus and method of use or treatment are disclosed for creating intrauterine adhesions resulting in amenorrhea. In particular, the apparatus relates to an easily deployed intrauterine implant that readily and consistently reduces or eliminates abnormal intrauterine bleeding. In addition, the apparatus is also used as a uterine marker device for visualizing endometrial tissue thickness and potential changes. The method of the present invention serves as a supplement to or a replacement for conventional hysterectomy or ablation/resection procedures used to treat menorrhagia.
    Type: Application
    Filed: December 22, 2003
    Publication date: September 30, 2004
    Applicant: Impres Medical, Inc.
    Inventors: Douglas J. Duchon, James Presthus
  • Publication number: 20040152978
    Abstract: An apparatus and method of use or treatment are disclosed for creating intrauterine adhesions resulting in amenorrhea. In particular, the apparatus relates to an easily deployed intrauterine implant that readily and consistently reduces or eliminates abnormal intrauterine bleeding. In addition, the apparatus is also used as a uterine marker device for visualizing endometrial tissue thickness and potential changes. The method of the present invention serves as a supplement to or a replacement for conventional hysterectomy or ablation/resection procedures used to treat menorrhagia.
    Type: Application
    Filed: December 22, 2003
    Publication date: August 5, 2004
    Inventors: Douglas J. Duchon, James Presthus
  • Publication number: 20040152977
    Abstract: An apparatus and method of use or treatment are disclosed for creating intrauterine adhesions resulting in amenorrhea. In particular, the apparatus relates to an easily deployed intrauterine implant that readily and consistently reduces or eliminates abnormal intrauterine bleeding. In addition, the apparatus is also used as a uterine marker device for visualizing endometrial tissue thickness and potential changes. The method of the present invention serves as a supplement to or a replacement for conventional hysterectomy or ablation/resection procedures used to treat menorrhagia.
    Type: Application
    Filed: December 3, 2003
    Publication date: August 5, 2004
    Applicant: Impres Medical, Inc.
    Inventors: Douglas J. Duchon, James Presthus
  • Publication number: 20040097905
    Abstract: A design is disclosed for a catheter assembly used during interventional and/or diagnostic procedures. The catheter includes a plurality of openings that allow for controlled fluid flow as the fluid exits the lumen of the catheter and can be inserted into the vascular system over a guidewire. As a result, the openings balance the fluid forces and, thereby, stabilize the distal tip to accommodate a wide range of injection parameters. The particular design of the catheter assembly of the present invention also reduces and/or eliminates recoil of the catheter tip during high volume injections, such as those associated with coronary or ventricular angiography.
    Type: Application
    Filed: October 29, 2003
    Publication date: May 20, 2004
    Inventors: Steven Savage, Greg Brucker, Douglas J. Duchon
  • Patent number: 6708056
    Abstract: An apparatus and method of use or treatment are disclosed for creating intrauterine adhesions resulting in amenorrhea. In particular, the apparatus relates to an easily deployed intrauterine implant that readily and consistently reduces or eliminates abnormal intrauterine bleeding. In addition, the apparatus is also used as a uterine marker device for visualizing endometrial tissue thickness and potential changes. The method of the present invention serves as a supplement to or a replacement for conventional hysterectomy or ablation/resection procedures used to treat menorrhagia.
    Type: Grant
    Filed: April 24, 2001
    Date of Patent: March 16, 2004
    Assignee: Impres Medical, Inc.
    Inventors: Douglas J. Duchon, James Presthus
  • Patent number: 6669679
    Abstract: A design is disclosed for a catheter assembly used during interventional and/or diagnostic procedures. The catheter includes a plurality of openings that allow for controlled fluid flow as the fluid exits the lumen of the catheter and can be inserted into the vascular system over a guidewire. As a result, the openings balance the fluid forces and, thereby, stabilize the distal tip to accommodate a wide range of injection parameters. The particular design of the catheter assembly of the present invention also reduces and/or eliminates recoil of the catheter tip during high volume injections, such as those associated with coronary or ventricular angiography.
    Type: Grant
    Filed: January 7, 2000
    Date of Patent: December 30, 2003
    Assignee: ACIST Medical Systems, Inc.
    Inventors: Steven Savage, Greg Brucker, Douglas J. Duchon
  • Patent number: 6626862
    Abstract: Devices that detect and monitor components and fluid used with an injector system, such as an angiographic injector system, are disclosed. The devices may include mechanical, electrical or software based indexing or keying features to ensure that only compatible components are used on the system. In addition, these devices may also be used to track and/or monitor fluid volume and use during various injection procedures. Single use and multiple use components, conveniently supplied in kits, may also be tracked and/or monitored by the devices of the present invention.
    Type: Grant
    Filed: April 4, 2000
    Date of Patent: September 30, 2003
    Assignee: ACIST Medical Systems, Inc.
    Inventors: Douglas J. Duchon, Robert F. Wilson, Jiyan Liu
  • Publication number: 20030122095
    Abstract: The present invention presents various novel approaches to solving the problems inherent in measuring biological pressures in high pressure systems. Thus, to protect a pressure transducer exposed to fluid flows at higher pressures than its overpressure rating, a novel valve is used that closes a protected leg in which the transducer is located. The various exemplary embodiments of such valves each have a high pressure input, one or more low pressure inputs, and an output. In operation, when a high pressure fluid flow occurs at a high pressure input, such valves automatically close the low pressure inputs. Alternatively, a novel transducer system is presented, which automatically limits the effective pressure sensed by a transducer to a certain maximum.
    Type: Application
    Filed: December 9, 2002
    Publication date: July 3, 2003
    Inventors: Robert F. Wilson, Douglas J. Duchon, Mark Gabbard, Khader Mohiuddin, Thomas McPeak
  • Publication number: 20030028144
    Abstract: An angiographic injector system and a method of controllably delivering medical fluid to a patient from an angiographic injector system are disclosed. A multiple processor control system is used to actively control the injection process and to monitor sensed functions of the system. The multiple processors provide dual redundancy safety circuits for critical control functions such as syringe motor drive speed and current. A motor/servo-amplifier nested control function is also disclosed. A unique method and apparatus are disclosed for establishing injection parameter default values just prior to an injection procedure that are based on physiological values of the patient to be treated. The injector system uses an interactive display panel that presents sequenced set-up screens to the user and which enables the user to select injection procedures, parameters and other modes of operation directly through the interactive panel.
    Type: Application
    Filed: January 20, 2000
    Publication date: February 6, 2003
    Inventors: Douglas J. Duchon, James P. Smith, Katherine H. Anderson, Robert F. Wilson, Jiyan Liu
  • Publication number: 20030028145
    Abstract: An angiographic injector system and a method of controllably delivering medical fluid to a patient from an angiographic injector system are disclosed. A multiple processor control system is used to actively control the injection process and to monitor sensed functions of the system. The multiple processors provide dual redundancy safety circuits for critical control functions such as syringe motor drive speed and current. A motor/servo-amplifier nested control function is also disclosed. A unique method and apparatus are disclosed for establishing injection parameter default values just prior to an injection procedure that are based on physiological values of the patient to be treated. The injector system uses an interactive display panel that presents sequenced set-up screens to the user and which enables the user to select injection procedures, parameters and other modes of operation directly through the interactive panel.
    Type: Application
    Filed: July 3, 2002
    Publication date: February 6, 2003
    Inventors: Douglas J. Duchon, James P. Smith, Katherine H. Anderson, Robert F. Wilson, Jiyan Liu
  • Publication number: 20030018252
    Abstract: An angiographic injector system and a method of controllably delivering medical fluid to a patient from an angiographic injector system are disclosed. A multiple processor control system is used to actively control the injection process and to monitor sensed functions of the system. The multiple processors provide dual redundancy safety circuits for critical control functions such as syringe motor drive speed and current. A motor/servo-amplifier nested control function is also disclosed. A unique method and apparatus are disclosed for establishing injection parameter default values just prior to an injection procedure that are based on physiological values of the patient to be treated. The injector system uses an interactive display panel that presents sequenced set-up screens to the user and which enables the user to select injection procedures, parameters and other modes of operation directly through the interactive panel.
    Type: Application
    Filed: June 14, 2002
    Publication date: January 23, 2003
    Inventors: Douglas J. Duchon, James P. Smith, Katherine H. Anderson, Robert F. Wilson, Jiyan Liu