Patents by Inventor Stephan Anderson
Stephan Anderson 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: 20240091006Abstract: An implantable medical device is adapted to be implanted at an implantation site within the vasculature and is capable of being implanted at the implantation site within the vasculature at more than one position relative to the implantation site. This may include a relative axial position and/or a relative rotational position. The implantable medical device includes an expandable frame that is adapted to expand from a collapsed configuration for delivery to an expanded configuration for deployment, and one or more radiopaque markers disposed relative to the expandable frame such that fluoroscopic imaging of the implantable medical device during deployment provides an indication of a position of the implantable medical device relative to the implantation site. The implantable medical device may be a replacement cardiac valve such as a replacement aortic valve, for example.Type: ApplicationFiled: September 19, 2023Publication date: March 21, 2024Applicant: BOSTON SCIENTIFIC SCIMED, INC.Inventors: James M. Anderson, Kelsey Rae Cooper, Joshua Stephan Havel, Levi Joel Wolterstorff, Shilpika Chowdhury
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Publication number: 20240077008Abstract: A bilayler metamaterial silencer allows substantial fluid through the apparatus, while mitigating the propagation of sound through the apparatus, and while providing a form factor that is significantly more compact than previously-known devices. Moreover, illustrative embodiments allow a designer to specify one or both of the frequency or frequencies at which the apparatus mitigates sound propagation, and/or the bandwidth around the frequency or frequencies at which the apparatus mitigates sound propagation.Type: ApplicationFiled: November 8, 2023Publication date: March 7, 2024Inventors: Xin Zhang, Reza Ghaffarivardavagh, Stephan Anderson
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Patent number: 11846217Abstract: A bilayler metamaterial silencer allows substantial fluid through the apparatus, while mitigating the propagation of sound through the apparatus, and while providing a form factor that is significantly more compact than previously-known devices. Moreover, illustrative embodiments allow a designer to specify one or both of the frequency or frequencies at which the apparatus mitigates sound propagation, and/or the bandwidth around the frequency or frequencies at which the apparatus mitigates sound propagation.Type: GrantFiled: December 4, 2020Date of Patent: December 19, 2023Assignee: Trustees of Boston UniversityInventors: Xin Zhang, Reza Ghaffarivardavagh, Stephan Anderson
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Publication number: 20220095944Abstract: A passive MRI enhancing embodiment includes a plurality of resonators and increases signal-to-noise ratio of radiofrequency signals emitted by a specimen and captured by an MRI machine. The apparatus increases the magnetic field component of radiofrequency energy during signal transmission from the MRI machine to the specimen, and/or reception of signals from the specimen to the MRI machine. Use of the apparatus improves the images generated by the MRI machine, and/or reduces the time necessary for the MRI machine to capture the image. An isolator embodiment has a nonlinear resonator controllably configurable alternately into an isolation configuration and a transmission configuration, and a second resonator.Type: ApplicationFiled: December 8, 2021Publication date: March 31, 2022Inventors: Xin Zhang, Stephan Anderson, Xiaoguang Zhao, Guangwu Duan
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Patent number: 11219384Abstract: A passive MRI enhancing embodiment includes a plurality of resonators and increases signal-to-noise ratio of radiofrequency signals emitted by a specimen and captured by an MRI machine. The apparatus increases the magnetic field component of radiofrequency energy during signal transmission from the MRI machine to the specimen, and/or reception of signals from the specimen to the MRI machine. Use of the apparatus improves the images generated by the MRI machine, and/or reduces the time necessary for the MRI machine to capture the image. An isolator embodiment has a nonlinear resonator controllably configurable alternately into an isolation configuration and a transmission configuration, and a second resonator.Type: GrantFiled: October 8, 2020Date of Patent: January 11, 2022Assignee: Trustees of Boston UniversityInventors: Xin Zhang, Stephan Anderson, Xiaoguang Zhao, Guangwu Duan
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Publication number: 20210100475Abstract: A passive MRI enhancing embodiment includes a plurality of resonators and increases signal-to-noise ratio of radiofrequency signals emitted by a specimen and captured by an MRI machine. The apparatus increases the magnetic field component of radiofrequency energy during signal transmission from the MRI machine to the specimen, and/or reception of signals from the specimen to the MRI machine. Use of the apparatus improves the images generated by the MRI machine, and/or reduces the time necessary for the MRI machine to capture the image. An isolator embodiment has a nonlinear resonator controllably configurable alternately into an isolation configuration and a transmission configuration, and a second resonator.Type: ApplicationFiled: October 8, 2020Publication date: April 8, 2021Inventors: Xin Zhang, Stephan Anderson, Xiaoguang Zhao, Guangwu Duan
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Publication number: 20210087957Abstract: A bilayler metamaterial silencer allows substantial fluid through the apparatus, while mitigating the propagation of sound through the apparatus, and while providing a form factor that is significantly more compact than previously-known devices. Moreover, illustrative embodiments allow a designer to specify one or both of the frequency or frequencies at which the apparatus mitigates sound propagation, and/or the bandwidth around the frequency or frequencies at which the apparatus mitigates sound propagation.Type: ApplicationFiled: December 4, 2020Publication date: March 25, 2021Inventors: Xin Zhang, Reza Ghaffarivardavagh, Stephan Anderson
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Patent number: 10947876Abstract: A bilayer metamaterial silencer allows substantial fluid through the apparatus, while mitigating the propagation of sound through the apparatus, and while providing a form factor that is significantly more compact than previously-known devices. Moreover, illustrative embodiments allow a designer to specify one or both of the frequency or frequencies at which the apparatus mitigates sound propagation, and/or the bandwidth around the frequency or frequencies at which the apparatus mitigates sound propagation.Type: GrantFiled: August 2, 2019Date of Patent: March 16, 2021Assignee: TRUSTEES OF BOSTON UNIVERSITYInventors: Xin Zhang, Reza Ghaffarivardavagh, Stephan Anderson
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Patent number: 10884089Abstract: A passive apparatus including a plurality of resonators increases signal-to-noise ratio of radiofrequency signals emitted by a specimen and captured by an MRI machine. The apparatus increases the magnetic field component of radiofrequency energy during signal transmission from the MRI machine to the specimen, and/or reception of signals from the specimen to the MRI machine. Moreover, the apparatus enhances specimen safety by substantially avoiding unwanted generation of an electric field, or an increase in the electric field component of the RF energy. Use of the apparatus improves the images generated by the MRI machine, and/or reduces the time necessary for the MRI machine to capture the image.Type: GrantFiled: June 17, 2019Date of Patent: January 5, 2021Assignee: Trustees of Boston UniversityInventors: Xin Zhang, Stephan Anderson, Guangwu Duan, Xiaoguang Zhao
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Publication number: 20200043456Abstract: A bilayler metamaterial silencer allows substantial fluid through the apparatus, while mitigating the propagation of sound through the apparatus, and while providing a form factor that is significantly more compact than previously-known devices. Moreover, illustrative embodiments allow a designer to specify one or both of the frequency or frequencies at which the apparatus mitigates sound propagation, and/or the bandwidth around the frequency or frequencies at which the apparatus mitigates sound propagation.Type: ApplicationFiled: August 2, 2019Publication date: February 6, 2020Inventors: Xin Zhang, Reza Ghaffarivardavagh, Stephan Anderson
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Publication number: 20190302209Abstract: A passive apparatus including a plurality of resonators increases signal-to-noise ratio of radiofrequency signals emitted by a specimen and captured by an MRI machine. The apparatus increases the magnetic field component of radiofrequency energy during signal transmission from the MRI machine to the specimen, and/or reception of signals from the specimen to the MRI machine. Moreover, the apparatus enhances specimen safety by substantially avoiding unwanted generation of an electric field, or an increase in the electric field component of the RF energy. Use of the apparatus improves the images generated by the MRI machine, and/or reduces the time necessary for the MRI machine to capture the image.Type: ApplicationFiled: June 17, 2019Publication date: October 3, 2019Inventors: Xin Zhang, Stephan Anderson, Guangwu Duan, Xiaoguang Zhao
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Patent number: 10324152Abstract: A passive apparatus including a plurality of resonators increases signal-to-noise ratio of radiofrequency signals emitted by a specimen and captured by an MRI machine. The apparatus increases the magnetic field component of radiofrequency energy during signal transmission from the MRI machine to the specimen, and/or reception of signals from the specimen to the MRI machine. Moreover, the apparatus enhances specimen safety by substantially avoiding unwanted generation of an electric field, or an increase in the electric field component of the RF energy. Use of the apparatus improves the images generated by the MRI machine, and/or reduces the time necessary for the MRI machine to capture the image.Type: GrantFiled: June 7, 2018Date of Patent: June 18, 2019Assignee: TRUSTEES OF BOSTON UNIVERSITYInventors: Xin Zhang, Stephan Anderson, Guangwu Duan, Xiaoguang Zhao
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Publication number: 20180356483Abstract: A passive apparatus including a plurality of resonators increases signal-to-noise ratio of radiofrequency signals emitted by a specimen and captured by an MRI machine. The apparatus increases the magnetic field component of radiofrequency energy during signal transmission from the MRI machine to the specimen, and/or reception of signals from the specimen to the MRI machine. Moreover, the apparatus enhances specimen safety by substantially avoiding unwanted generation of an electric field, or an increase in the electric field component of the RF energy. Use of the apparatus improves the images generated by the MRI machine, and/or reduces the time necessary for the MRI machine to capture the image.Type: ApplicationFiled: June 7, 2018Publication date: December 13, 2018Inventors: Xin Zhang, Stephan Anderson, Guangwu Duan, Xiaoguang Zhao
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Publication number: 20170089997Abstract: In a first aspect this invention provides methods comprising administering an aqueous contrast agent to the vascular system of a subject, and performing a magnetic resonance scan to detect the MR signal enhancement effects of the aqueous contrast agent. In embodiments the magnetic resonance scan comprises applying at least one pulse sequence selected from a PD-weighted pulse sequence, a T1-weighted pulse sequence, a T2-weighted pulse sequence, and a D-weighted pulse sequence. In embodiments the magnetic resonance scan comprises applying a T1-weighted pulse sequence. A system for performing perfusion MRI comprising an aqueous contrast solution and an injection apparatus configured to provide a maximum injection rate of the aqueous contrast solution to a subject vascular system of at least about 5 ml/s. is also provided.Type: ApplicationFiled: May 14, 2015Publication date: March 30, 2017Applicant: BOSTON MEDICAL CENTER CORPORATIONInventors: Hernan JARA, Asim MIAN, Stephan ANDERSON, Osamu SAKAI, Alex NORBASH, Jorge SOTO
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Publication number: 20070298931Abstract: A device is provided which can serve one or more of the multiple functions of impeding rotation of a shaft de-coupled turbine rotor, selectively impeding rotation of a first spool of the engine, for example to permit a second spool to generate power for use in ground operation, and facilitating reduced aircraft ground speed.Type: ApplicationFiled: February 21, 2007Publication date: December 27, 2007Inventors: Ronald Trumper, Stephan Anderson, Kevin Dooley, Joseph Brand