Patents by Inventor Sidney D Nystrom
Sidney D Nystrom 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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Patent number: 10779796Abstract: An intravascular imaging system can include a catheter, a position sensor, and an intravascular imaging engine for receiving information from the catheter and the position sensor. The position sensor can include a reference element and a movable element, which can have a movable element position that is correlated to the position of an imaging transducer in the catheter. The relative position between the movable element and a reference element can be determined and can correspond to the relative movement of the transducer within a patient's vasculature. The imaging engine can receive position information from the position sensor and image information from the catheter and generate a display using the received information. Because relative movement of the transducer can be determined, spatial relationships between sets of imaging data can be determined, and image data from multiple transducer locations can be combined into one image.Type: GrantFiled: June 22, 2017Date of Patent: September 22, 2020Assignee: ACIST MEDICAL SYSTEMS, INC.Inventors: Jason F. Hiltner, Robert F. Wilson, Sidney D. Nystrom
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Patent number: 10322277Abstract: A syringe for injecting contrast injection media into a patient. An inlet valve system associated with the syringe, the inlet valve system operable with a contrast injection media having any viscosity within the range of about 1 cP to about 30 cP. An inlet valve system associated with the syringe, the inlet valve system including a valve member having a density of less than or equal to 1 gram per cubic centimeter. A contrast injector system with such a syringe.Type: GrantFiled: November 21, 2011Date of Patent: June 18, 2019Assignee: ACIST MEDICAL SYSTEMS, INC.Inventor: Sidney D. Nystrom
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Patent number: 9925338Abstract: An injection system includes a syringe, which preferably includes larger and smaller inner diameters, and a plunger. A wiper sidewall of the plunger defines a cavity, into which a plunger shaft of the system is inserted, for moving the plunger, within the syringe, for fluid injection. The plunger includes a feature for engaging the shaft, and the sidewall preferably includes an expandable-contractible portion, in which the feature is formed. When the plunger is initially mounted within the larger inner diameter of the syringe, the portion of the sidewall is expanded and the feature of the plunger does not operably engage the inserted shaft. When the shaft moves the plunger into the smaller inner diameter of the syringe, the portion of the sidewall contracts and the feature operably engages the shaft. A deformable end wall of the plunger may be spaced apart from a distal terminal end of the inserted shaft.Type: GrantFiled: April 29, 2016Date of Patent: March 27, 2018Assignee: ACIST MEDICAL SYSTEMS, INC.Inventors: Martin G. Hieb, David J. Hajicek, Sidney D. Nystrom
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Publication number: 20170281133Abstract: An intravascular imaging system can include a catheter, a position sensor, and an intravascular imaging engine for receiving information from the catheter and the position sensor. The position sensor can include a reference element and a movable element, which can have a movable element position that is correlated to the position of an imaging transducer in the catheter. The relative position between the movable element and a reference element can be determined and can correspond to the relative movement of the transducer within a patient's vasculature. The imaging engine can receive position information from the position sensor and image information from the catheter and generate a display using the received information. Because relative movement of the transducer can be determined, spatial relationships between sets of imaging data can be determined, and image data from multiple transducer locations can be combined into one image.Type: ApplicationFiled: June 22, 2017Publication date: October 5, 2017Inventors: Jason F. Hiltner, Robert F. Wilson, Sidney D. Nystrom
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Patent number: 9713456Abstract: An intravascular imaging system can include a catheter, a position sensor, and an intravascular imaging engine for receiving information from the catheter and the position sensor. The position sensor can include a reference element and a movable element, which can have a movable element position that is correlated to the position of an imaging transducer in the catheter. The relative position between the movable element and a reference element can be determined and can correspond to the relative movement of the transducer within a patient's vasculature. The imaging engine can receive position information from the position sensor and image information from the catheter and generate a display using the received information. Because relative movement of the transducer can be determined, spatial relationships between sets of imaging data can be determined, and image data from multiple transducer locations can be combined into one image.Type: GrantFiled: December 30, 2013Date of Patent: July 25, 2017Assignee: ACIST Medical Systems, Inc.Inventors: Jason F. Hiltner, Robert F. Wilson, Sidney D. Nystrom
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Publication number: 20160243306Abstract: An injection system includes a syringe, which preferably includes larger and smaller inner diameters, and a plunger. A wiper sidewall of the plunger defines a cavity, into which a plunger shaft of the system is inserted, for moving the plunger, within the syringe, for fluid injection. The plunger includes a feature for engaging the shaft, and the sidewall preferably includes an expandable-contractible portion, in which the feature is formed. When the plunger is initially mounted within the larger inner diameter of the syringe, the portion of the sidewall is expanded and the feature of the plunger does not operably engage the inserted shaft. When the shaft moves the plunger into the smaller inner diameter of the syringe, the portion of the sidewall contracts and the feature operably engages the shaft. A deformable end wall of the plunger may be spaced apart from a distal terminal end of the inserted shaft.Type: ApplicationFiled: April 29, 2016Publication date: August 25, 2016Inventors: MARTIN G. HIEB, DAVID J. HAJICEK, SIDNEY D. NYSTROM
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Patent number: 9390632Abstract: A medical fluid injection system may include a powered injector and a fluid reservoir that contains a simulated contrast medium. The simulated contrast medium may exhibit a fluid flow property substantially equal to that of an active contrast medium but be devoid of any active contrast agent that provides contrast during diagnostic imaging. During operation, a syringe in the powered injector may be filled with the simulated contrast medium and then evacuated to discharge the simulated contrast medium from the syringe. The simulated contrast medium may be used to test and evaluate the performance of the powered injector prior to use in a medical procedure without exposing personnel to an active contrast agent or creating medical waste that contains the active contrast agent.Type: GrantFiled: November 19, 2014Date of Patent: July 12, 2016Assignee: ACIST MEDICAL SYSTEMS, INC.Inventor: Sidney D. Nystrom
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Patent number: 9352105Abstract: An injection system includes a syringe, which preferably includes larger and smaller inner diameters, and a plunger. A wiper sidewall of the plunger defines a cavity, into which a plunger shaft of the system is inserted, for moving the plunger, within the syringe, for fluid injection. The plunger includes a feature for engaging the shaft, and the sidewall preferably includes a expandable-contractible portion, in which the feature is formed. When the plunger is initially mounted within the larger inner diameter of the syringe, the portion of the sidewall is expanded and the feature of the plunger does not operably engage the inserted shaft. When the shaft moves the plunger into the smaller inner diameter of the syringe, the portion of the sidewall contracts and the feature operably engages the shaft. An optional deformable end wall of the plunger may be spaced apart from a distal terminal end of the inserted shaft.Type: GrantFiled: November 19, 2013Date of Patent: May 31, 2016Assignee: ACIST Medical Systems, Inc.Inventors: Martin G. Hieb, David J. Hajicek, Sidney D. Nystrom
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Publication number: 20150182190Abstract: An intravascular imaging system can include a catheter, a position sensor, and an intravascular imaging engine for receiving information from the catheter and the position sensor. The position sensor can include a reference element and a movable element, which can have a movable element position that is correlated to the position of an imaging transducer in the catheter. The relative position between the movable element and a reference element can be determined and can correspond to the relative movement of the transducer within a patient's vasculature. The imaging engine can receive position information from the position sensor and image information from the catheter and generate a display using the received information. Because relative movement of the transducer can be determined, spatial relationships between sets of imaging data can be determined, and image data from multiple transducer locations can be combined into one image.Type: ApplicationFiled: December 30, 2013Publication date: July 2, 2015Inventors: Jason F. Hiltner, Robert F. Wilson, Sidney D. Nystrom
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Publication number: 20150072328Abstract: A medical fluid injection system may include a powered injector and a fluid reservoir that contains a simulated contrast medium. The simulated contrast medium may exhibit a fluid flow property substantially equal to that of an active contrast medium but be devoid of any active contrast agent that provides contrast during diagnostic imaging. During operation, a syringe in the powered injector may be filled with the simulated contrast medium and then evacuated to discharge the simulated contrast medium from the syringe. The simulated contrast medium may be used to test and evaluate the performance of the powered injector prior to use in a medical procedure without exposing personnel to an active contrast agent or creating medical waste that contains the active contrast agent.Type: ApplicationFiled: November 19, 2014Publication date: March 12, 2015Inventor: Sidney D. Nystrom
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Publication number: 20150073274Abstract: A medical fluid injection system may include a powered injector and a fluid reservoir that contains a simulated contrast medium. The simulated contrast medium may exhibit a fluid flow property substantially equal to that of an active contrast medium but be devoid of any active contrast agent that provides contrast during diagnostic imaging. During operation, a syringe in the powered injector may be filled with the simulated contrast medium and then evacuated to discharge the simulated contrast medium from the syringe. The simulated contrast medium may be used to test and evaluate the performance of the powered injector prior to use in a medical procedure without exposing personnel to an active contrast agent or creating medical waste that contains the active contrast agent.Type: ApplicationFiled: November 19, 2014Publication date: March 12, 2015Inventor: Sidney D. Nystrom
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Patent number: 8915399Abstract: A medical fluid injection system may include a powered injector and a fluid reservoir that contains a simulated contrast medium. The simulated contrast medium may exhibit a fluid flow property substantially equal to that of an active contrast medium but be devoid of any active contrast agent that provides contrast during diagnostic imaging. During operation, a syringe in the powered injector may be filled with the simulated contrast medium and then evacuated to discharge the simulated contrast medium from the syringe. The simulated contrast medium may be used to test and evaluate the performance of the powered injector prior to use in a medical procedure without exposing personnel to an active contrast agent or creating medical waste that contains the active contrast agent.Type: GrantFiled: November 6, 2012Date of Patent: December 23, 2014Assignee: ACIST Medical Systems, Inc.Inventor: Sidney D. Nystrom
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Patent number: 8905969Abstract: A method of removing air from a flow path of a medical fluid injection system is described. An exemplary method performed by the medical fluid injection device includes delivering a first amount of fluid to a fluid flow path, isolating fluid flow along the flow path, forming a vacuum condition upstream of the fluid isolation, re-establishing fluid communications along the flow path, and delivering a second amount of fluid to the flow path.Type: GrantFiled: November 29, 2012Date of Patent: December 9, 2014Assignee: ACIST Medical Systems, Inc.Inventors: Sidney D. Nystrom, David J Hajicek, Touhid Khan
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Publication number: 20140081214Abstract: An injection system includes a syringe, which preferably includes larger and smaller inner diameters, and a plunger. A wiper sidewall of the plunger defines a cavity, into which a plunger shaft of the system is inserted, for moving the plunger, within the syringe, for fluid injection. The plunger includes a feature for engaging the shaft, and the sidewall preferably includes a expandable-contractible portion, in which the feature is formed. When the plunger is initially mounted within the larger inner diameter of the syringe, the portion of the sidewall is expanded and the feature of the plunger does not operably engage the inserted shaft. When the shaft moves the plunger into the smaller inner diameter of the syringe, the portion of the sidewall contracts and the feature operably engages the shaft. An optional deformable end wall of the plunger may be spaced apart from a distal terminal end of the inserted shaft.Type: ApplicationFiled: November 19, 2013Publication date: March 20, 2014Applicant: ACIST MEDICAL SYSTEMS, INC.Inventors: MARTIN G. HIEB, DAVID J. HAJICEK, SIDNEY D. NYSTROM
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Patent number: 8613730Abstract: An injection system includes a syringe, which preferably includes larger and smaller inner diameters, and a plunger. A wiper sidewall of the plunger defines a cavity, into which a plunger shaft of the system is inserted, for moving the plunger, within the syringe, for fluid injection. The plunger includes a feature for engaging the shaft, and the sidewall preferably includes a expandable-contractible portion, in which the feature is formed. When the plunger is initially mounted within the larger inner diameter of the syringe, the portion of the sidewall is expanded and the feature of the plunger does not operably engage the inserted shaft. When the shaft moves the plunger into the smaller inner diameter of the syringe, the portion of the sidewall contracts and the feature operably engages the shaft. An optional deformable end wall of the plunger may be spaced apart from a distal terminal end of the inserted shaft.Type: GrantFiled: November 26, 2008Date of Patent: December 24, 2013Assignee: Acist Medical Systems, Inc.Inventors: Martin G. Hieb, David J. Hajicek, Sidney D. Nystrom
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Patent number: 8591477Abstract: One embodiment of the invention provides a method to purge air or liquid from a powered injection system. In this embodiment, the method includes driving a first pumping device in a first operational mode to inject an amount of a first liquid medium through disposable tubing and a disposable valve, driving the first pumping device in a second operational mode to deform the disposable valve, and driving a second pumping device to inject an amount of a second liquid medium through the disposable tubing and the deformed valve. In one embodiment, the first pumping device comprises a first syringe, the second pumping device comprises a second syringe, and the disposable valve comprises an elastomeric valve.Type: GrantFiled: February 28, 2012Date of Patent: November 26, 2013Assignee: ACIST Medical Systems, Inc.Inventors: Martin G. Hieb, Khader Mohiuddin, Sidney D. Nystrom, Robert F. Wilson
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Patent number: 8343098Abstract: A method of removing air from a flow path of a medical fluid injection system is described. An exemplary method performed by the medical fluid injection device includes delivering a first amount of fluid to a fluid flow path, isolating fluid flow along the flow path, forming a vacuum condition upstream of the fluid isolation, re-establishing fluid communications along the flow path, and delivering a second amount of fluid to the flow path.Type: GrantFiled: June 29, 2009Date of Patent: January 1, 2013Assignee: ACIST Medical Systems, Inc.Inventors: Sidney D. Nystrom, David J. Hajicek, Touhid Khan
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Publication number: 20120152391Abstract: One embodiment of the invention provides a method to purge air or liquid from a powered injection system. In this embodiment, the method includes driving a first pumping device in a first operational mode to inject an amount of a first liquid medium through disposable tubing and a disposable valve, driving the first pumping device in a second operational mode to deform the disposable valve, and driving a second pumping device to inject an amount of a second liquid medium through the disposable tubing and the deformed valve. In one embodiment, the first pumping device comprises a first syringe, the second pumping device comprises a second syringe, and the disposable valve comprises an elastomeric valve.Type: ApplicationFiled: February 28, 2012Publication date: June 21, 2012Applicant: ACIST MEDICAL SYSTEMS, INC.Inventors: Martin G. Hieb, Khader Mohiuddin, Sidney D. Nystrom, Robert F. Wilson
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Publication number: 20120130236Abstract: A syringe for injecting contrast injection media into a patient. An inlet valve system associated with the syringe, the inlet valve system operable with a contrast injection media having any viscosity within the range of about 1 cP to about 30 cP. An inlet valve system associated with the syringe, the inlet valve system including a valve member having a density of less than or equal to 1 gram per cubic centimeter. A contrast injector system with such a syringe.Type: ApplicationFiled: November 21, 2011Publication date: May 24, 2012Applicant: ACIST MEDICAL SYSTEMS, INC.Inventor: Sidney D. Nystrom
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Patent number: 8147463Abstract: One embodiment of the invention provides a method to purge air or liquid from a powered injection system. In this embodiment, the method includes driving a first pumping device in a first operational mode to inject an amount of a first liquid medium through disposable tubing and a disposable valve, driving the first pumping device in a second operational mode to deform the disposable valve, and driving a second pumping device to inject an amount of a second liquid medium through the disposable tubing and the deformed valve. In one embodiment, the first pumping device comprises a first syringe, the second pumping device comprises a second syringe, and the disposable valve comprises an elastomeric valve.Type: GrantFiled: May 29, 2007Date of Patent: April 3, 2012Assignee: ACIST Medical Systems, Inc.Inventors: Martin G Hieb, Khader Mohiuddin, Sidney D Nystrom, Robert F Wilson