Patents by Inventor Jiyan Liu
Jiyan Liu 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: 20240049013Abstract: The present disclosure provides a method for a Base Station (BS) in a communication network is provided. The method includes: obtaining channel quality information sent from a User Equipment (UE), and in response to determining that the UE is in poor coverage according to the channel quality information, configuring the UE to perform downlink measurements on at least one downlink RLM measurement source in accordance with measurement configurations. The corresponding devices, computer readable storage medium, carrier, etc. thereof are also provided.Type: ApplicationFiled: December 14, 2020Publication date: February 8, 2024Inventors: Yanyan ZHU, Huaisong ZHU, Jiyan LIU
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Publication number: 20230180059Abstract: According to an embodiment of the present disclosure, a method in a Distributed Unit, DU, of a network device is provided. The method includes: transmitting, to a Central Unit, CU, of the network device, a first message containing a request for resource coordination with another network device; and receiving, from the CU, a second message containing a response to the request from the other network device.Type: ApplicationFiled: May 15, 2020Publication date: June 8, 2023Inventors: Jiyan Liu, Xiang Gao, Ying Jia, Yue Han, Yi Wang
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Publication number: 20220256411Abstract: The present disclosure provides a method at a first master node in dual connectivity. The dual connectivity involves a first Radio Access Technology (RAT) and a second RAT. The method includes receiving a first measurement report for the second RAT from a terminal device, and receiving a second measurement report for the first RAT from the terminal device. The method further includes receiving a secondary node reconfiguration message from a first secondary node. The secondary node reconfiguration message has been generated in response to the first measurement report. The method further includes sending a Radio Resource Control (RRC) Connection Reconfiguration message to the terminal device. The RRC Connection Reconfiguration message includes information on master node reconfiguration under the first RAT and information on secondary node reconfiguration under the second RAT. Therefore, the resource allocated to signaling messages may be reduced, and the burden on the terminal device may be alleviated.Type: ApplicationFiled: July 24, 2019Publication date: August 11, 2022Inventor: Jiyan Liu
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Patent number: 8758294Abstract: One embodiment provides a method implemented by a powered inflation device to prepare a balloon catheter for use during a medical procedure. In this embodiment, the method includes drawing an amount of medical fluid from a fluid reservoir into the inflation device during a first motorized operation of the inflation device, removing an amount of air from the balloon catheter during a second motorized operation of the inflation device, and injecting the amount of medical fluid from the inflation device into the balloon catheter during a third motorized operation of the inflation device to inflate a balloon located at a distal end of the balloon catheter. The powered inflation device may be a stand-alone device in one embodiment. In one embodiment, the powered inflation device is coupled to an angiographic injector system. When it is coupled to an angiographic injector system, the balloon inflation device and the injector system may be controlled by a common control panel, or console, in one embodiment.Type: GrantFiled: December 22, 2006Date of Patent: June 24, 2014Assignee: ACIST Medical Systems, Inc.Inventors: Robert Kim, Jiyan Liu, Thomas McPeak, Khader Mohiuddin, Jon Moon, Richard A. Oftedahl, Norman Schwartz, Glenn Toews, Robert F. Wilson
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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: 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: 20100249587Abstract: 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: ApplicationFiled: June 3, 2010Publication date: September 30, 2010Applicant: ACIST MEDICAL SYSTEMS, INC.Inventors: Doug Duchon, Thomas Paulson, Robert F. Wilson, Jiyan Liu
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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: 7753885Abstract: 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: September 24, 2003Date of Patent: July 13, 2010Assignee: ACIST Medical Systems, Inc.Inventors: Doug Duchon, Thomas Paulson, Robert F. Wilson, Jiyan Liu
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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: 20090312740Abstract: One embodiment provides a method implemented by a powered inflation device to prepare a balloon catheter for use during a medical procedure. In this embodiment, the method includes drawing an amount of medical fluid from a fluid reservoir into the inflation device during a first motorized operation of the inflation device, removing an amount of air from the balloon catheter during a second motorized operation of the inflation device, and injecting the amount of medical fluid from the inflation device into the balloon catheter during a third motorized operation of the inflation device to inflate a balloon located at a distal end of the balloon catheter The powered inflation device may be a stand-alone device in one embodiment. In one embodiment, the powered inflation device is coupled to an angiographic injector system. When it is coupled to an angiographic injector system, the balloon inflation device and the injector system may be controlled by a common control panel, or console, in one embodiment.Type: ApplicationFiled: December 22, 2006Publication date: December 17, 2009Applicant: ACIST MEDICAL SYSTEMS, INC.Inventors: Robert Kim, Jiyan Liu, Thomas McPeak, Khader Mohiuddin, Jon Moon, Richard A. Oftedahl, Norman Schwartz, Glenn Toews, Robert F. Wilson
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Publication number: 20080103437Abstract: 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: May 31, 2007Publication date: May 1, 2008Applicant: 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: 7357785Abstract: 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: GrantFiled: November 8, 2006Date of Patent: April 15, 2008Assignee: Acist Medical Systems, Inc.Inventors: Douglas J. Duchon, Thomas Paulson, Vince Copa, Robert F. Wilson, Jiyan Liu
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Patent number: 7267666Abstract: 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: November 7, 1997Date of Patent: September 11, 2007Assignee: 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: 20070055202Abstract: 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: ApplicationFiled: November 8, 2006Publication date: March 8, 2007Applicant: Acist Medical Systems, Inc.Inventors: Douglas Duchon, Thomas Paulson, Vince Copa, Robert Wilson, Jiyan Liu
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Patent number: 7153288Abstract: 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: GrantFiled: August 9, 2005Date of Patent: December 26, 2006Assignee: Acist Medical Systems, Inc.Inventors: Doug Duchon, Thomas Paulson, Vince Copa, Robert F. Wilson, Jiyan Liu
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Patent number: 7128729Abstract: 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: June 14, 2002Date of Patent: October 31, 2006Assignee: 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: 20050267363Abstract: 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: ApplicationFiled: August 9, 2005Publication date: December 1, 2005Inventors: Doug Duchon, Thomas Paulson, Vince Copa, Robert Wilson, Jiyan Liu
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Patent number: 6945959Abstract: 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: GrantFiled: May 26, 2004Date of Patent: September 20, 2005Assignee: Acist Medical Systems, Inc.Inventors: Doug Duchon, Thomas Paulson, Vince Copa, Robert F. Wilson, Jiyan Liu