Patents by Inventor Jiafeng ZHANG

Jiafeng ZHANG 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: 20240198080
    Abstract: A blood flow pump device includes a centrifugal pump having a single ball-and-cup hybrid magnetic/blood immersed bearing-supported shrouded impeller driven by a magnetically coupled motor drive. The device further includes a housing, an impeller, and a shroud, thus forming a pump chamber. The impeller is a shrouded impeller having extended blades from a hub of the impeller and the shroud. The system and method employ a blood flow pump device having a housing with a blood inlet and a blood outlet, the housing defining a fluid pathway between the inlet and the outlet, and the housing containing an impeller comprising a base, a base lid, two blades, and a shroud, with the housing positioned on a motor. A controller communicates with the motor and controls rotational speed of the impeller in response to the blood flow through the blood outlet.
    Type: Application
    Filed: April 11, 2022
    Publication date: June 20, 2024
    Inventors: Zhongjun WU, Bartley P. GRIFFITH, Jiafeng ZHANG, Charles Luddy
  • Publication number: 20230233802
    Abstract: An access device may be provided that includes a hub configured to improve the flow of blood within a lumen, in order to prevent, e.g., thrombus formation, while also avoiding hemolysis. The hub may have a removably attachable second arm, protrusions/depressions with the lumens of the hub or system, and/or plugs or plug analogs may be used to prevent flow from entering certain regions of the lumens within the hub. These hubs may be used, e.g., as part of an access device, which may have a modular configuration.
    Type: Application
    Filed: January 6, 2023
    Publication date: July 27, 2023
    Applicant: ABIOMED, Inc.
    Inventors: Adam Finck, Emilia Jahangir, Charles Anthony DeLorenzo, Glen Fantuzzi, Zhenghog Tao, Jiafeng Zhang, Leo Tse, Ryan Orizondo
  • Publication number: 20220347362
    Abstract: The device of the present invention includes a dual chamber gas exchanger that is configured for increased flexibility and scalability for many clinical applications. The dual chamber oxygenator can be configured and used in various applications, such as in a heart-lung machine for cardiopulmonary support during cardiothoracic surgery, in an extracorporeal membrane oxygenation (ECMO) circuitry, as a respiratory assist device for patients with lung failure, and the like. The dual chamber gas exchanger features two sweep gas flow paths and two gas exchange membrane bundles enclosed in a housing structure with various blood flow distribution and gas distribution mechanisms. The gas exchanger includes an outer housing, an intermediate housing, two gas exchange fiber bundles, a blood inlet, a blood outlet, two gas inlets, two gas outlets, two gas distribution chambers and an optional heat exchanger.
    Type: Application
    Filed: July 7, 2022
    Publication date: November 3, 2022
    Inventors: Zhongjun WU, Bartley P. GRIFFITH, Jiafeng ZHANG, Steven J. ORWIG
  • Patent number: 11433168
    Abstract: The device of the present invention includes a dual chamber gas exchanger that is configured for increased flexibility and scalability for many clinical applications. The dual chamber oxygenator can be configured and used in various applications, such as in a heart-lung machine for cardiopulmonary support during cardiothoracic surgery, in an extracorporeal membrane oxygenation (ECMO) circuitry, as a respiratory assist device for patients with lung failure, and the like. The dual chamber gas exchanger features two sweep gas flow paths and two gas exchange membrane bundles enclosed in a housing structure with various blood flow distribution and gas distribution mechanisms. The gas exchanger includes an outer housing, an intermediate housing, two gas exchange fiber bundles, a blood inlet, a blood outlet, two gas inlets, two gas outlets, two gas distribution chambers and an optional heat exchanger.
    Type: Grant
    Filed: February 14, 2020
    Date of Patent: September 6, 2022
    Assignees: UNIVERSITY OF MARYLAND, BALTIMORE, BREETHE, INC.
    Inventors: Zhongjun Wu, Bartley P. Griffith, Jiafeng Zhang, Steven J. Orwig
  • Publication number: 20200206404
    Abstract: The device of the present invention includes a dual chamber gas exchanger that is configured for increased flexibility and scalability for many clinical applications. The dual chamber oxygenator can be configured and used in various applications, such as in a heart-lung machine for cardiopulmonary support during cardiothoracic surgery, in an extracorporeal membrane oxygenation (ECMO) circuitry, as a respiratory assist device for patients with lung failure, and the like. The dual chamber gas exchanger features two sweep gas flow paths and two gas exchange membrane bundles enclosed in a housing structure with various blood flow distribution and gas distribution mechanisms. The gas exchanger includes an outer housing, an intermediate housing, two gas exchange fiber bundles, a blood inlet, a blood outlet, two gas inlets, two gas outlets, two gas distribution chambers and an optional heat exchanger.
    Type: Application
    Filed: February 14, 2020
    Publication date: July 2, 2020
    Inventors: Zhongjun WU, Bartley P. GRIFFITH, Jiafeng ZHANG, Steven J. ORWIG