Patents by Inventor Robert Anthony Zimmerman

Robert Anthony Zimmerman 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).

  • Extracorporeal device and method for removal of secondary membrane
    Patent number: 11938258
    Abstract: An extracorporeal blood treatment device and a method are provided for removing a secondary membrane formed on a semipermeable membrane of a dialyzer during an extracorporeal blood treatment. The extracorporeal blood treatment device operates in a first operating mode in which a dialysate outlet valve is open such that dialysate flows through a dialyzer feed line, through a dialysate chamber, and into and through a dialyzer discharge line. The extracorporeal blood treatment device operates in a second operating mode to remove the secondary membrane from the semipermeable membrane. During the second operating mode, the dialysate outlet valve is closed for a duration of time such that dialysate is prevented from flowing through the dialyzer discharge line. A backflush procedure results wherein a volume of dialysate passes from the dialysate chamber through the semipermeable membrane and into the blood chamber.
    Type: Grant
    Filed: March 28, 2022
    Date of Patent: March 26, 2024
    Assignee: FRESENIUS MEDICAL CARE HOLDINGS, INC.
    Inventors: Matthew Doyle, Robert Anthony Zimmerman
  • Extracorporeal Device and Method for Removal of Secondary Membrane
    Publication number: 20220370699
    Abstract: An extracorporeal blood treatment device and a method are provided for removing a secondary membrane formed on a semipermeable membrane of a dialyzer during an extracorporeal blood treatment. The extracorporeal blood treatment device operates in a first operating mode in which a dialysate outlet valve is open such that dialysate flows through a dialyzer feed line, through a dialysate chamber, and into and through a dialyzer discharge line. The extracorporeal blood treatment device operates in a second operating mode to remove the secondary membrane from the semipermeable membrane. During the second operating mode, the dialysate outlet valve is closed for a duration of time such that dialysate is prevented from flowing through the dialyzer discharge line. A backflush procedure results wherein a volume of dialysate passes from the dialysate chamber through the semipermeable membrane and into the blood chamber.
    Type: Application
    Filed: March 28, 2022
    Publication date: November 24, 2022
    Applicant: Fresenius Medical Care Holdings, Inc.
    Inventors: Matthew Doyle, Robert Anthony Zimmerman