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).
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Publication number: 20210275834Abstract: One embodiment is directed to a non-contact, medical ultrasound therapy system for generating and controlling low frequency ultrasound for the delivery of fluids containing biologic or cellular materials. The ultrasound therapy system includes a treatment wand including an ultrasonic transducer, a generator unit, and a cable coupling the treatment wand to the generator unit. The generator unit generates electric power output to drive the ultrasonic transducer and includes a digital frequency generator.Type: ApplicationFiled: July 28, 2017Publication date: September 9, 2021Applicant: ALLIQUA BIOMEDICAL, INC.Inventors: Douglas J. DUCHON, Mohit BHATIA, Janice M. SMIELL, Ryan Glen TETZLOFF
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Patent number: 10687967Abstract: An implant delivery catheter enables permanent modification of the implant length in the vicinity of the treatment site prior to radial expansion thereof. The implant is releasable carried between inner and outer tubular members of the delivery catheter which, upon repositioning relative to one another using an actuator mechanism, impart any of tensile, compressile or torquing forces to the implant causing permanent modification of the implant length. In one embodiment, the circumference of the implant is substantially similar both before and after modification of the implant length. In another embodiment, the implant includes a plurality of strut sections interconnected by bridges which are capable of the deformation along the longitudinal axis of the implant.Type: GrantFiled: April 16, 2018Date of Patent: June 23, 2020Assignee: COVIDIEN LPInventors: Richard S. Kusleika, Joe Tatalovich, Douglas J. Duchon
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Publication number: 20180228628Abstract: An implant delivery catheter enables permanent modification of the implant length in the vicinity of the treatment site prior to radial expansion thereof. The implant is releasable carried between inner and outer tubular members of the delivery catheter which, upon repositioning relative to one another using an actuator mechanism, impart any of tensile, compressile or torquing forces to the implant causing permanent modification of the implant length. In one embodiment, the circumference of the implant is substantially similar both before and after modification of the implant length. In another embodiment, the implant includes a plurality of strut sections interconnected by bridges which are capable of the deformation along the longitudinal axis of the implant.Type: ApplicationFiled: April 16, 2018Publication date: August 16, 2018Inventors: Richard S. Kusleika, Joe Tatalovich, Douglas J. Duchon
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Patent number: 9901671Abstract: A method of preventing extravaation 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 extravaation 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: GrantFiled: November 5, 2007Date of Patent: February 27, 2018Assignee: ACIST Medical Systems, Inc.Inventors: Glenn Toews, Chris Szczech, Thomas J. McPeak, Douglas J. Duchon
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Patent number: 8590555Abstract: 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: GrantFiled: January 26, 2011Date of Patent: November 26, 2013Assignee: ACIST Medical Systems, Inc.Inventors: Robert F. Wilson, Douglas J. Duchon, Mark Gabbard, Khader Mohiuddin, Thomas J. McPeak
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Publication number: 20130066201Abstract: 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: ApplicationFiled: September 14, 2012Publication date: March 14, 2013Applicant: ACIST MEDICAL SYSTEMS, INC.Inventors: Douglas J. Duchon, James P. Smith, Katherine H. Anderson, Robert F. Wilson, Jiyan Liu
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Patent number: 8262610Abstract: 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: GrantFiled: March 31, 2008Date of Patent: September 11, 2012Assignee: ACIST Medical Systems, Inc.Inventors: Douglas J. Duchon, Robert F. Wilson
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Publication number: 20120071905Abstract: In general, the present invention contemplates an implantable device for treating excessive bleeding in a body cavity. The device comprises a biocompatible material, for example polyethylene teraphathalate (PET), which is deliverable into the body cavity. The biocompatible material contains an attribute(s) that promotes tissue reaction or growth that results in a tissue response and/or adhesion formation within the body cavity to reduce or stop the excessive bleeding.Type: ApplicationFiled: October 3, 2011Publication date: March 22, 2012Inventors: Michael J. GIRARD, Paul Danielson, James Elliott Coad, James Presthus, Karen Elizabeth Peterson, Douglas J. Duchon
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Patent number: 8082018Abstract: 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: GrantFiled: February 4, 2010Date of Patent: December 20, 2011Assignee: ACIST Medical Systems, Inc.Inventors: Douglas J. Duchon, James P. Smith, Katherine H. Anderson, Robert F. Wilson, Jiyan Liu
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Patent number: 7959605Abstract: 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: GrantFiled: June 3, 2010Date of Patent: June 14, 2011Assignee: Acist Medical Systems, Inc.Inventors: Douglas J. Duchon, Thomas Paulson, Robert F. Wilson, Jiyan Liu
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Publication number: 20110114197Abstract: 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: ApplicationFiled: January 26, 2011Publication date: May 19, 2011Applicant: ACIST Medical Systems, Inc.Inventors: Robert F. Wilson, Douglas J. Duchon, Mark Gabbard, Khader Mohiuddin, Thomas McPeak
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Patent number: 7905246Abstract: 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: GrantFiled: October 7, 2009Date of Patent: March 15, 2011Assignee: ACIST Medical Systems, Inc.Inventors: Robert F. Wilson, Douglas J. Duchon, Mark Gabbard, Khader Mohiuddin, Thomas J. McPeak
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Publication number: 20100204574Abstract: 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: ApplicationFiled: February 4, 2010Publication date: August 12, 2010Inventors: Douglas J. Duchon, James P. Smith, Katherine H. Anderson, Robert F. Wilson, Jiyan Liu
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Patent number: 7686800Abstract: 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: GrantFiled: October 29, 2003Date of Patent: March 30, 2010Assignee: ACIST Medical Systems, Inc.Inventors: Steven Savage, Greg Brucker, Douglas J. Duchon
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Patent number: 7662124Abstract: 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: GrantFiled: April 16, 2002Date of Patent: February 16, 2010Assignee: Acist Medical Systems, Inc.Inventors: Douglas J. Duchon, James P. Smith, Katherine H. Anderson, Robert F. Wilson, Jiyan Liu
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Publication number: 20100019178Abstract: 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: ApplicationFiled: October 7, 2009Publication date: January 28, 2010Applicant: ACIST Medical Systems, Inc.Inventors: Robert F. Wilson, Douglas J. Duchon, Mark Gabbard, Khader Mohiuddin, Thomas McPeak
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Patent number: 7617837Abstract: 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: GrantFiled: April 10, 2006Date of Patent: November 17, 2009Assignee: ACIST Medical Systems, Inc.Inventors: Robert F. Wilson, Douglas J. Duchon, Mark Gabbard, Khader Mohiuddin, Thomas McPeak
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Publication number: 20090076383Abstract: 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: ApplicationFiled: November 5, 2007Publication date: March 19, 2009Applicant: ACIST MEDICAL SYSTEMS, INC.Inventors: Glenn Toews, Chris Szczech, Thomas J. McPeak, Douglas J. Duchon
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Publication number: 20080264423Abstract: 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: ApplicationFiled: July 3, 2008Publication date: October 30, 2008Inventors: Douglas J. Duchon, James Presthus
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Patent number: 7406969Abstract: 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: GrantFiled: December 22, 2003Date of Patent: August 5, 2008Assignee: Impres Medical, Inc.Inventors: Douglas J. Duchon, James Presthus