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).

  • Publication number: 20240049013
    Abstract: 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: Application
    Filed: December 14, 2020
    Publication date: February 8, 2024
    Inventors: Yanyan ZHU, Huaisong ZHU, Jiyan LIU
  • Publication number: 20230180059
    Abstract: 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: Application
    Filed: May 15, 2020
    Publication date: June 8, 2023
    Inventors: Jiyan Liu, Xiang Gao, Ying Jia, Yue Han, Yi Wang
  • Publication number: 20220256411
    Abstract: 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: Application
    Filed: July 24, 2019
    Publication date: August 11, 2022
    Inventor: Jiyan Liu
  • Patent number: 8758294
    Abstract: 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: Grant
    Filed: December 22, 2006
    Date of Patent: June 24, 2014
    Assignee: 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
  • Publication number: 20130066201
    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: September 14, 2012
    Publication date: March 14, 2013
    Applicant: ACIST MEDICAL SYSTEMS, INC.
    Inventors: Douglas J. Duchon, James P. Smith, Katherine H. Anderson, Robert F. Wilson, Jiyan Liu
  • Patent number: 8082018
    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: February 4, 2010
    Date of Patent: December 20, 2011
    Assignee: ACIST Medical Systems, Inc.
    Inventors: Douglas J. Duchon, James P. Smith, Katherine H. Anderson, Robert F. Wilson, Jiyan Liu
  • Patent number: 7959605
    Abstract: 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: Grant
    Filed: June 3, 2010
    Date of Patent: June 14, 2011
    Assignee: Acist Medical Systems, Inc.
    Inventors: Douglas J. Duchon, Thomas Paulson, Robert F. Wilson, Jiyan Liu
  • Publication number: 20100249587
    Abstract: 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: Application
    Filed: June 3, 2010
    Publication date: September 30, 2010
    Applicant: ACIST MEDICAL SYSTEMS, INC.
    Inventors: Doug Duchon, Thomas Paulson, Robert F. Wilson, Jiyan Liu
  • Publication number: 20100204574
    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: February 4, 2010
    Publication date: August 12, 2010
    Inventors: Douglas J. Duchon, James P. Smith, Katherine H. Anderson, Robert F. Wilson, Jiyan Liu
  • Patent number: 7753885
    Abstract: 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: Grant
    Filed: September 24, 2003
    Date of Patent: July 13, 2010
    Assignee: ACIST Medical Systems, Inc.
    Inventors: Doug Duchon, Thomas Paulson, Robert F. Wilson, Jiyan Liu
  • Patent number: 7662124
    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: April 16, 2002
    Date of Patent: February 16, 2010
    Assignee: Acist Medical Systems, Inc.
    Inventors: Douglas J. Duchon, James P. Smith, Katherine H. Anderson, Robert F. Wilson, Jiyan Liu
  • Publication number: 20090312740
    Abstract: 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: Application
    Filed: December 22, 2006
    Publication date: December 17, 2009
    Applicant: 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
  • 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: 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
  • Publication number: 20070055202
    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: Application
    Filed: November 8, 2006
    Publication date: March 8, 2007
    Applicant: Acist Medical Systems, Inc.
    Inventors: Douglas Duchon, Thomas Paulson, Vince Copa, Robert Wilson, Jiyan Liu
  • Patent number: 7153288
    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: August 9, 2005
    Date of Patent: December 26, 2006
    Assignee: Acist Medical Systems, Inc.
    Inventors: Doug Duchon, Thomas Paulson, Vince Copa, 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: 20050267363
    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: Application
    Filed: August 9, 2005
    Publication date: December 1, 2005
    Inventors: Doug Duchon, Thomas Paulson, Vince Copa, Robert Wilson, Jiyan Liu
  • Patent number: 6945959
    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: May 26, 2004
    Date of Patent: September 20, 2005
    Assignee: Acist Medical Systems, Inc.
    Inventors: Doug Duchon, Thomas Paulson, Vince Copa, Robert F. Wilson, Jiyan Liu