Patents by Inventor Silvio Cavalcanti

Silvio Cavalcanti 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).

  • Apparatus and method of monitoring a vascular access of a patient subjected to an extracorporeal blood treatment
    Patent number: 7749184
    Abstract: In the apparatus and method for monitoring a vascular access (6) of an extracorporeal circuit (5; 10) of a patient, a control and calculation unit (17) varies a flow rate of a blood pump (9) predisposed to cause blood to circulate in the extracorporeal circuit. The control and calculation unit receives the pressure values in the blood withdrawal line (5) and the blood return line (10) from two pressure sensors (8, 12); the pressure values are a series of different values of the blood flow rate. The control and calculation unit processes the data gathered by means of a mathematical model which describes the variation of pressure in the vascular access as a function of the flow rate, in order to determine the blood flow rate in the vascular access. The invention detects the presence and location of a stenosis at the vascular access of a patient subjected to a hemodialysis treatment.
    Type: Grant
    Filed: December 20, 2006
    Date of Patent: July 6, 2010
    Assignee: Gambro Lundia AB
    Inventors: Silvio Cavalcanti, Carlo Alberto Lodi, Massimo Fava
  • Apparatus and method of monitoring a vascular access of a patient subjected to an extracorporeal blood treatment
    Publication number: 20070112289
    Abstract: In the apparatus and method for monitoring a vascular access (6) of an extracorporeal circuit (5; 10) of a patient, a control and calculation unit (17) varies a flow rate of a blood pump (9) predisposed to cause blood to circulate in the extracorporeal circuit. The control and calculation unit receives-the pressure values in the blood withdrawal line (5) and the blood return line (10) from two pressure sensors (8, 12); the pressure values are a series of different values of the blood flow rate. The control and calculation unit processes the data gathered by means of a mathematical model which describes the variation of pressure in the vascular access as a function of the flow rate, in order to determine the blood flow rate in the vascular access. The invention detects the presence and location of a stenosis at the vascular access of a patient subjected to a hemodialysis treatment.
    Type: Application
    Filed: December 20, 2006
    Publication date: May 17, 2007
    Inventors: Silvio Cavalcanti, Carlo Lodi, Massimo Fava
  • Apparatus and method for monitoring a vascular access of a patient subjected to an extracorporeal blood treatment
    Patent number: 7172570
    Abstract: In the apparatus and method for monitoring a vascular access (6) of an extracorporeal circuit (5; 10) of a patient, a control and calculation unit (17) varies a flow rate of a blood pump (9) predisposed to cause blood to circulate in the extracorporeal circuit. The control and calculation unit receives the pressure values in the blood withdrawal line (5) and the blood return line (10) from two pressure sensors (8, 12); the pressure values are a series of different values of the blood flow rate. The control and calculation unit processes the data gathered by means of a mathematical model which describes the variation of pressure in the vascular access as a function of the flow rate, in order to determine the blood flow rate in the vascular access. The invention detects the presence and location of a stenosis at the vascular access of a patient subjected to a hemodialysis treatment.
    Type: Grant
    Filed: January 28, 2004
    Date of Patent: February 6, 2007
    Inventors: Silvio Cavalcanti, Carlo Alberto Lodi, Massimo Fava
  • Apparatus and method for monitoring a vascular access of a patient subjected to an extracorporeal blood treatment
    Publication number: 20040186409
    Abstract: In the apparatus and method for monitoring a vascular access (6) of an extracorporeal circuit (5; 10) of a patient, a control and calculation unit (17) varies a flow rate of a blood pump (9) predisposed to cause blood to circulate in the extracorporeal circuit. The control and calculation unit receives the pressure values in the blood withdrawal line (5) and the blood return line (10) from two pressure sensors (8, 12); the pressure values are a series of different values of the blood flow rate. The control and calculation unit processes the data gathered by means of a mathematical model which describes the variation of pressure in the vascular access as a function of the flow rate, in order to determine the blood flow rate in the vascular access. The invention detects the presence and location of a stenosis at the vascular access of a patient subjected to a hemodialysis treatment.
    Type: Application
    Filed: January 28, 2004
    Publication date: September 23, 2004
    Applicants: GAMBRO DASCO S.p.A., GAMBRO LUNDIA AB.
    Inventors: Silvio Cavalcanti, Carlo Alberto Lodi, Massimo Fava