Patents by Inventor Massimo Fava
Massimo Fava 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).
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Patent number: 9186450Abstract: A method and apparatus for priming an extracorporeal blood circuit, in which the patient end of an arterial line (79) is connected to a first discharge port (61), and the patient end of a venous line (87) is connected to a second discharge port (62). The two discharge ports are connected to a used dialysate line which connects a dialyzer (33) to a drain. The arterial and venous lines are filled with a priming fluid, while the air contained in the arterial and venous lines is evacuated partly through the first discharge port and partly through the second discharge port. Two check valves (65, 66) prevent flow from the used dialysate line towards the two discharge ports. The invention reduces the risk of errors on the part of an operator readying the priming configuration, as well as the risk of contamination of the extracorporeal circuit during the priming phase.Type: GrantFiled: August 10, 2013Date of Patent: November 17, 2015Assignee: Gambro Lundia ABInventors: Massimo Fava, Mauro Suffritti, Alessandro Scaglione
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Patent number: 8998837Abstract: An apparatus (1) for extracorporeal blood treatment comprising a blood treatment device (2) having a semipermeable membrane (5) which separates a blood chamber (3) from a fluid chamber (4). A used fluid line (7) connects the fluid chamber to a used fluid discharge. A first pump (8) controls the ultrafiltration through the semipermeable membrane. A second pump (9) arranged in the used fluid line downstream of the first pump keeps pressure between the first and the second pump at a constant predetermined value. The invention provides a protection system against any possible pressure change in the used fluid discharge in a hemodialysis or hemo(dia)filtration apparatus.Type: GrantFiled: July 3, 2013Date of Patent: April 7, 2015Assignee: Gambro Lundia ABInventors: Massimo Fava, Mauro Suffritti, Anna Puppini
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Publication number: 20130319917Abstract: A method and apparatus for priming an extracorporeal blood circuit, in which the patient end of an arterial line (79) is connected to a first discharge port (61), and the patient end of a venous line (87) is connected to a second discharge port (62). The two discharge ports are connected to a used dialysate line which connects a dialyser (33) to a drain. The arterial and venous lines are filled with a priming fluid, while the air contained in the arterial and venous lines is evacuated partly through the first discharge port and partly through the second discharge port. Two check valves (65, 66) prevent flow from the used dialysate line towards the two discharge ports. The invention reduces the risk of errors on the part of an operator readying the priming configuration, as well as the risk of contamination of the extracorporeal circuit during the priming phase.Type: ApplicationFiled: August 10, 2013Publication date: December 5, 2013Applicant: GAMBRO LUNDIA ABInventors: Massimo FAVA, Mauro SUFFRITTI, Alessandro SCAGLIONE
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Publication number: 20130292313Abstract: An apparatus (1) for extracorporeal blood treatment comprising a blood treatment device (2) having a semipermeable membrane (5) which separates a blood chamber (3) from a fluid chamber (4). A used fluid line (7) connects the fluid chamber to a used fluid discharge. A first pump (8) controls the ultrafiltration through the semipermeable membrane. A second pump (9) arranged in the used fluid line downstream of the first pump keeps pressure between the first and the second pump at a constant predetermined value. The invention provides a protection system against any possible pressure change in the used fluid discharge in a hemodialysis or hemo(dia)filtrati on apparatus.Type: ApplicationFiled: July 3, 2013Publication date: November 7, 2013Inventors: MASSIMO FAVA, MAURO SUFFRITTI, ANNA PUPPINI
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Patent number: 8529487Abstract: A method and apparatus for priming an extracorporeal blood circuit, in which the patient end of an arterial line (79) is connected to a first discharge port (61), and the patient end of a venous line (87) is connected to a second discharge port (62). The two discharge ports are connected to a used dialysate line which connects a dialyser (33) to a drain. The arterial and venous lines are filled with a priming fluid, while the air contained in the arterial and venous lines is evacuated partly through the first discharge port and partly through the second discharge port. Two check valves (65, 66) prevent flow from the used dialysate line towards the two discharge ports. The invention reduces the risk of errors on the part of an operator readying the priming configuration, as well as the risk of contamination of the extracorporeal circuit during the priming phase.Type: GrantFiled: April 12, 2007Date of Patent: September 10, 2013Assignee: Gambro Lundia ABInventors: Massimo Fava, Mauro Suffritti, Alessandro Scaglione
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Patent number: 8480609Abstract: An apparatus (1) for extracorporeal blood treatment comprising a blood treatment device (2) having a semipermeable membrane (5) which separates a blood chamber (3) from a fluid chamber (4). A used fluid line (7) connects the fluid chamber to a used fluid discharge. A first pump (8) controls the ultrafiltration through the semipermeable membrane. A second pump (9) arranged in the used fluid line downstream of the first pump keeps pressure between the first and the second pump at a constant predetermined value. The invention provides a protection system against any possible pressure change in the used fluid discharge in a hemodialysis or hemo(dia)filtration apparatus.Type: GrantFiled: November 15, 2006Date of Patent: July 9, 2013Assignee: Gambro Lundia ABInventors: Massimo Fava, Anna Puppini, Mauro Suffritti
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Patent number: 8425767Abstract: A connecting device comprises a buffer chamber (2), a first connecting line (3) between a liquid source (4) and an inlet (5) of the buffer chamber, a second connecting line (9) between an outlet (10) of the buffer chamber and the medical treatment apparatus (11), two valves (7, 8) arranged in series on the first connecting line, a pump (12) on the second connecting line, two liquid level sensors (15, 16) operating in the buffer chamber, a vent valve (18) connected to the buffer chamber. The liquid source is a centralized distribution plant of dialysate, while the medical treatment apparatus is a dialysis apparatus. The invention prevents back-contamination of the centralized plant with disinfectant sourced from the dialysis apparatus.Type: GrantFiled: May 25, 2007Date of Patent: April 23, 2013Assignee: Gambro Lundia ABInventors: Massimo Fava, Salvatore Rinaldi
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Publication number: 20120265117Abstract: A method and apparatus for priming an extracorporeal blood circuit, in which the patient end of an arterial line (79) is connected to a first discharge port (61), and the patient end of a venous line (87) is connected to a second discharge port (62). The two discharge ports are connected to a used dialysate line which connects a dialyser (33) to a drain. The arterial and venous lines are filled with a priming fluid, while the air contained in the arterial and venous lines is evacuated partly through the first discharge port and partly through the second discharge port. Two check valves (65, 66) prevent flow from the used dialysate line towards the two discharge ports. The invention reduces the risk of errors on the part of an operator readying the priming configuration, as well as the risk of contamination of the extracorporeal circuit during the priming phase.Type: ApplicationFiled: April 12, 2007Publication date: October 18, 2012Applicant: GAMBRO LUNDIA ABInventors: Massimo Fava, Mauro Suffritti, Alessandro Scaglione
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Publication number: 20100181235Abstract: A connecting device comprises a buffer chamber (2), a first connecting line (3) between a liquid source (4) and an inlet (5) of the buffer chamber, a second connecting line (9) between an outlet (10) of the buffer chamber and the medical treatment apparatus (11), two valves (7, 8) arranged in series on the first connecting line, a pump (12) on the second connecting line, two liquid level sensors (15, 16) operating in the buffer chamber, a vent valve (18) connected to the buffer chamber. The liquid source is a centralised distribution plant of dialysate, while the medical treatment apparatus is a dialysis apparatus. The invention prevents back-contamination of the centralised plant with disinfectant sourced from the dialysis apparatus.Type: ApplicationFiled: May 25, 2007Publication date: July 22, 2010Applicant: GAMBRO LUNDIA ABInventors: Massimo Fava, Salvatore Rinaldi
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Patent number: 7749184Abstract: 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: GrantFiled: December 20, 2006Date of Patent: July 6, 2010Assignee: Gambro Lundia ABInventors: Silvio Cavalcanti, Carlo Alberto Lodi, Massimo Fava
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Patent number: 7648474Abstract: A method of detecting the detachment of the venous needle from a patient during an extracorporeal blood treatment in a dialysis machine having an extracorporeal blood circuit provided with an arterial branch and a venous branch. The arterial pressure (Pa) is measured in the arterial branch and the venous pressure (Pv) is measured in the venous branch, and the determination is made of whether or not decreases of the arterial pressures (Pa) and venous pressures (Pv) are occurring during the dialysis treatment in normal conditions.Type: GrantFiled: June 24, 2002Date of Patent: January 19, 2010Assignee: Gambro Lundia ABInventors: Francesco Paolini, Carlo Alberto Lodi, Massimo Fava
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Publication number: 20100010412Abstract: An apparatus (1) for extracorporeal blood treatment comprising a blood treatment device (2) having a semipermeable membrane (5) which separates a blood chamber (3) from a fluid chamber (4). A used fluid line (7) connects the fluid chamber to a used fluid discharge. A first pump (8) controls the ultrafiltration through the semipermeable membrane. A second pump (9) arranged in the used fluid line downstream of the first pump keeps pressure between the first and the second pump at a constant predetermined value. The invention provides a protection system against any possible pressure change in the used fluid discharge in a hemodialysis or hemo(dia)filtration apparatus.Type: ApplicationFiled: November 15, 2006Publication date: January 14, 2010Applicant: GAMBRO LUNDIA ABInventors: Massimo Fava, Mauro Suffritti, Anna Puppini
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Publication number: 20070112289Abstract: 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: ApplicationFiled: December 20, 2006Publication date: May 17, 2007Inventors: Silvio Cavalcanti, Carlo Lodi, Massimo Fava
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Patent number: 7172570Abstract: 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: GrantFiled: January 28, 2004Date of Patent: February 6, 2007Inventors: Silvio Cavalcanti, Carlo Alberto Lodi, Massimo Fava
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Publication number: 20040186409Abstract: 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: ApplicationFiled: January 28, 2004Publication date: September 23, 2004Applicants: GAMBRO DASCO S.p.A., GAMBRO LUNDIA AB.Inventors: Silvio Cavalcanti, Carlo Alberto Lodi, Massimo Fava
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Patent number: 6794194Abstract: A method for measuring the hemoglobin concentration in the blood in a circuit of a dialysis machine includes directing electromagnetic waves against one section of the circuit, measuring values of the electromagnetic waves transmitted through the section, and determining values of absorption of electromagnetic waves by the blood along the section from the measured values of transmitted electromagnetic waves. The values of absorption are correlated with the values of the hemoglobin concentration. The method also includes measuring the values of at least one physical quantity of the blood, wherein the at least one physical quantity is selected from blood pressure and blood temperature, and calculating the values of hemoglobin concentration as a function of the values of absorption and the at least one physical quantity.Type: GrantFiled: October 21, 2002Date of Patent: September 21, 2004Assignee: Gambro Dasco SpAInventors: Massimo Fava, Annalisa Delnevo, Francesco Paolini
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Publication number: 20040171977Abstract: A method of detecting the detachment of the venous needle from a patient during an extracorporeal blood treatment in a dialysis machine having an extracorporeal blood circuit provided with an arterial branch and a venous branch. The arterial pressure (Pa) is measured in the arterial branch and the venous pressure (Pv) is measured in the venous branch, and the determination is made of whether or not decreases of the arterial pressures (Pa) and venous pressures (Pv) are occurring during the dialysis treatment in normal conditions.Type: ApplicationFiled: December 24, 2003Publication date: September 2, 2004Inventors: Francesco Alberto Paolini, Carlo Alberto Lodi, Massimo Fava
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Publication number: 20030138961Abstract: A method for measuring the hemoglobin concentration (HGB) in the blood in a circuit (2) of a dialysis machine (1), the method comprising the measurement of the values of absorption (A) of electromagnetic waves by the blood conveyed along a specified section (5a) of the said circuit (2), the measurement of the values of a physical quantity iron the group comprising the blood pressure (1)), the blood temperature (T) and the rate of flow (Qb) of the blood along the aforesaid section (5a), and the calculation of the hemoglobin concentration (HGB) as a function of the values of absorption (A) and of the aforesaid physical quantityType: ApplicationFiled: October 21, 2002Publication date: July 24, 2003Inventors: Massimo Fava, Annalisa Delnevo, Francesco Paolini
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Patent number: 6537240Abstract: In an extracorporeal blood treatment system, non-treated blood may be withdrawn from a patient through an arterial line connected to a first compartment of a blood treatment apparatus. The blood treatment apparatus also includes a second compartment separated from the first component by a semi-permeable membrane. Treated blood may be returned to the patient through a venous line connected to the second compartment. In order to determine blood recirculation, i.e., a mixture of treated blood and non-treated blood in the arterial line, the ultrafiltration rate of plasma water through the semi permeable membrane of the treatment apparatus may be temporarily increased or decreased, and the resulting variation of the blood concentration, i.e., of the ratio of the volume of the plasma volume to the blood volume, is determined.Type: GrantFiled: May 3, 1999Date of Patent: March 25, 2003Assignee: Hospal AGInventors: Giovanni Cavicchioli, Enrico Canini, Massimo Fava
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Publication number: 20020062098Abstract: A method for determining the recirculation of blood in a vascular access (11) of a patient whose blood is subjected to a treatment in a blood treating apparatus (12) connected to the patient by an extra-corporal circuit comprises the following steps: regulating the flow rate of in the extra-corporal circuit at a predetermined value (QB); determining a first value (HGBA0) of the parameter representing the concentration of blood in the extra-corporal circuit; bringing about a first variation of predetermined amplitude (QUF) of the ultrafiltration flow rate in the treating apparatus (12); determining a second value (HGBA3) of the parameter representing the concentration of blood in the extra-corporal circuit; computing the recirculation (AR) of the blood in the extra-corporal circuit on the basis of the blood flow rate (QB), of the predetermined amplitude (QUF) of the first variation of the ultrafiltration flow rate and of the first and second values (HGBA0, HGBA3) of the parameter representing the blood concentType: ApplicationFiled: May 3, 1999Publication date: May 23, 2002Inventors: GIOVANNI CAVICCHIOLI, ENRICO CANINI, MASSIMO FAVA