Patents Assigned to NStage Medical, Inc.
  • Hemofiltration system including ultrafiltrate purification and re-infusion system
    Patent number: 6582385
    Abstract: A hemofiltration system is provided in which ultrafiltrate is purified by reverse osmosis for reinfusion. Non-sterile infusate concentrate is dialyzed into the purified ultrafiltrate and combined with cleared blood which is returned to the patient. In another system, a hemofilter is used to sterilize essentially pure, non-sterile water for dilution of sterile infusate concentrate, then the hemofilter is used to filter blood, the infusate concentrate being combined with cleared blood for return to the patient.
    Type: Grant
    Filed: February 19, 1998
    Date of Patent: June 24, 2003
    Assignee: NStage Medical, Inc.
    Inventors: Jeffrey H Burbank, C David Finch, James M Brugger