Patents by Inventor Renato Pedrazzi

Renato Pedrazzi 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: 20190038833
    Abstract: A solution infusion apparatus (1), particularly for dialysis systems, comprising at least one main pouch (3, 3?) adapted to contain a solution and comprising a pump (5) configured for introducing the solution in the blood circuit of a dialysis system. The apparatus further comprises at least one additional pouch (7) that is hydraulically connected to the at least one main pouch (3, 3?), wherein the pump (5) is configured to draw the solution from the at least one additional pouch (7).
    Type: Application
    Filed: January 27, 2017
    Publication date: February 7, 2019
    Inventors: Paolo PIRAZZOLI, Renato PEDRAZZI
  • Patent number: 9366615
    Abstract: In a process for testing filters (4) and (13) of treatment fluid of a hemodiafiltration apparatus (1), each filter has a wet semipermeable membrane (5, 14) which separates a gas-filled first chamber (6 and 15) from a liquid-filled second chamber (7 and 16). The first chambers are pressurized by a pump (19) supplying air, while the second chambers are placed in depression by a drainage pump (17) of used dialysis fluid. A first closed system is formed which includes the first chambers and a second closed system is formed which includes the second chambers. Two pressure gauges (P1 and P2) monitor the pressure in the two closed systems for a predetermined time. The monitoring provides indications relating to the filter integrity.
    Type: Grant
    Filed: October 2, 2014
    Date of Patent: June 14, 2016
    Assignee: GAMBRO LUNDIA AB
    Inventors: Anna Puppini, Renato Pedrazzi, Mauro Suffritti
  • Publication number: 20150033829
    Abstract: In a process for testing filters (4) and (13) of treatment fluid of a hemodiafiltration apparatus (1), each filter has a wet semipermeable membrane (5, 14) which separates a gas-filled first chamber (6 and 15) from a liquid-filled second chamber (7 and 16). The first chambers are pressurised by a pump (19) supplying air, while the second chambers are placed in depression by a drainage pump (17) of used dialysis fluid. A first closed system is formed which includes the first chambers and a second closed system is formed which includes the second chambers. Two pressure gauges (P1 and P2) monitor the pressure in the two closed systems for a predetermined time. The monitoring provides indications relating to the filter integrity.
    Type: Application
    Filed: October 2, 2014
    Publication date: February 5, 2015
    Inventors: Anna PUPPINI, Renato PEDRAZZI, Mauro SUFFRITTI
  • Patent number: 8881600
    Abstract: In a process for testing filters (4) and (13) of treatment fluid of a hemodiafiltration apparatus (1), each filter has a wet semipermeable membrane (5, 14) which separates a gas-filled first chamber (6 and 15) from a liquid-filled second chamber (7 and 16). The first chambers are pressurised by a pump (19) supplying air, while the second chambers are placed in depression by a drainage pump (17) of used dialysis fluid. A first closed system is formed which includes the first chambers and a second closed system is formed which includes the second chambers. Two pressure gauges (P1 and P2) monitor the pressure in the two closed systems for a predetermined time. The monitoring provides indications relating to the filter integrity.
    Type: Grant
    Filed: July 1, 2005
    Date of Patent: November 11, 2014
    Assignee: Gambro Lundia AB
    Inventors: Anna Puppini, Renato Pedrazzi, Mauro Suffritti
  • Publication number: 20090151470
    Abstract: In a process for testing filters (4) and (13) of treatment fluid of a hemodiafiltration apparatus (1), each filter has a wet semipermeable membrane (5, 14) which separates a gas-filled first chamber (6 and 15) from a liquid-filled second chamber (7 and 16). The first chambers are pressurised by a pump (19) supplying air, while the second chambers are placed in depression by a drainage pump (17) of used dialysis fluid. A first closed system is formed which includes the first chambers and a second closed system is formed which includes the second chambers. Two pressure gauges (P1 and P2) monitor the pressure in the two closed systems for a predetermined time. The monitoring provides indications relating to the filter integrity.
    Type: Application
    Filed: July 1, 2005
    Publication date: June 18, 2009
    Applicant: GAMBRO LUNDIA AB
    Inventors: Anna Puppini, Renato Pedrazzi, Mauro Suffritti
  • Patent number: 7147616
    Abstract: A method for emptying a blood circuit of an apparatus for the extracorporeal treatment of blood after interrupting a treatment session. The apparatus has a blood treatment device with first and second compartments separated by a semi permeable membrane, an arterial pipe connected to an inlet of the first compartment, a venous pipe connected to an outlet of the first compartment and a second end, and a used liquid circuit having a drain pipe connected to an outlet of the second compartment. The method involves the closing of the blood circuit on itself. The blood circuit includes the arterial pipe, the first compartment of the blood treatment apparatus, and the venous pipe, in order to form a closed loop circuit after the arterial and venous pipes have been disconnected from the vascular system of the patient. The blood circuit contains a liquid, which is transferred from the closed loop circuit into the used liquid circuit.
    Type: Grant
    Filed: January 12, 2001
    Date of Patent: December 12, 2006
    Assignee: Gambro Hospal (Schweiz) AG
    Inventors: Renato Pedrazzi, Paolo Rovatti
  • Patent number: 6966979
    Abstract: An infusion control device controls infusion of a liquid in an extracorporeal blood circuit having an arterial pipe connected to an inlet of a blood compartment of a filter and a venous pipe connected to an outlet of the blood compartment. The arterial pipe is also connected to a pre-dilution pipe of an infusion circuit, and the venous pipe is also connected to a post-dilution pipe of said infusion circuit. The infusion control device regulates and distributes an infusion flow rate in the arterial and venous pipes based on a monitoring of quantities that are directly correlated with the operating conditions of the filter.
    Type: Grant
    Filed: February 6, 2004
    Date of Patent: November 22, 2005
    Assignee: Gambro Hospal (Schweiz) AG
    Inventor: Renato Pedrazzi
  • Publication number: 20040154967
    Abstract: An infusion control device controls infusion of a liquid in an extracorporeal blood circuit having an arterial pipe connected to an inlet of a blood compartment of a filter and a venous pipe connected to an outlet of the blood compartment. The arterial pipe is also connected to a pre-dilution pipe of an infusion circuit, and the venous pipe is also connected to a post-dilution pipe of said infusion circuit. The infusion control device regulates and distributes an infusion flow rate in the arterial and venous pipes based on a monitoring of quantities that are directly correlated with the operating conditions of the filter.
    Type: Application
    Filed: February 6, 2004
    Publication date: August 12, 2004
    Applicant: GAMBRO HOSPAL (Schweiz) AG
    Inventor: Renato Pedrazzi
  • Patent number: 6730233
    Abstract: A dialysis machine includes an extracorporeal blood circuit having an arterial pipe and a venous pipe respectively connected to an inlet and an outlet of a blood compartment of a filter. The blood compartment and a dialysis liquid compartment of the filter are separated by a semi-permeable membrane. The machine is configured to determine a sequence of infusion of a liquid in the extracorporeal blood circuit, from at least one characteristic value correlated with the concentration of the blood and/or a filtration efficiency of the filter, and to infuse the infusion solution in the arterial pipe and in the venous pipe in accordance with the determined infusion sequence.
    Type: Grant
    Filed: April 12, 2002
    Date of Patent: May 4, 2004
    Assignee: Gambro Hospal (Schweiz) AG
    Inventor: Renato Pedrazzi
  • Publication number: 20030100857
    Abstract: A method for emptying a blood circuit of an apparatus for the extracorporeal treatment of blood after interrupting a treatment session, the apparatus comprising: a blood treatment device (4) having a fist and a second compartment (5, 6) separated from one another by a semi permeable membrane (7), an arterial pipe (8) connected to an inlet of the first compartment (5), a venous pipe (9) connected to an outlet of the first compartment (5) and a second end, a used liquid circuit (6, 21) having a drain pipe (21) connected to an outlet of the second compartment (6), whereby the method comprises the steps of: closing on itself a blood circuit (2) comprising the arterial pipe (8), the first compartment (5) of the blood treatment apparatus (4) and the venous pipe (9) in order to form a closed loop circuit, after the arterial and venous pipes (8, 9) have been disconnected from the vascular system of the patient, the blood circuit containing a liquid, transferring the liquid contained in the closed loop circuit into th
    Type: Application
    Filed: March 18, 2002
    Publication date: May 29, 2003
    Inventors: Renato Pedrazzi, Paolo Rovatti
  • Publication number: 20020121471
    Abstract: A dialysis machine having an extracorporeal blood circuit having an arterial pipe and a venous pipe respectively connected to an inlet and an outlet of a blood compartment of a filter having a blood compartment and a dialysis liquid compartment separated by a semi-permeable membrane;
    Type: Application
    Filed: April 12, 2002
    Publication date: September 5, 2002
    Inventor: Renato Pedrazzi
  • Patent number: 5895578
    Abstract: A method for disinfection of the hydraulic circuit of a dialysis machine, comprising an inlet (E) for connection to an external water source and a plurality of open lines (1, 2, 4a, 4b, 26) intended to be connected, in an operational configuration of the machine, to different consumable accessories, comprises the steps of:closing the open lines on the hydraulic circuit in such a way as to form a closed network of lines;bringing a reservoir (40) containing a concentrated disinfection liquid into communication with the hydraulic circuit, in proximity to the inlet;instigating a proportional flow of water and of concentrated disinfection liquid in the hydraulic circuit in such a way as to produce a first liquid having a bactericidal action;interrupting the flow of water and of concentrated disinfection liquid when the hydraulic circuit is filled with bactericidal liquid, the initial volume of concentrated disinfection liquid in the reservoir being chosen such that at the end of the filling of the hydraulic circui
    Type: Grant
    Filed: June 13, 1997
    Date of Patent: April 20, 1999
    Assignee: Hospal Industrie
    Inventors: Laurent Simard, Renato Pedrazzi
  • Patent number: 4702675
    Abstract: Apparatus for circulating a liquid along a tubular conduit comprises a peristaltic pump provided with a rotor which acts through the intermediary of rollers, on an elastically deformable tube disposed in series along the mentioned tubular conduit and a device mounted outside on a section of the deformable tube for emitting an electric signal depending on the deformation induced in operation in the section of tube by the pressure of the said pumped liquid.
    Type: Grant
    Filed: August 2, 1985
    Date of Patent: October 27, 1987
    Assignee: Hospal A.G.
    Inventors: Mauro Aldrovandi, Domenico Cianciavicchia, Renato Pedrazzi