Patents by Inventor Mattias Holmer
Mattias Holmer 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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Publication number: 20160206804Abstract: A filtering device receives a signal from a pressure sensor in an extracorporeal fluid circuit connected to a subject and processes the signal to separate physiological pulses, e.g. from the subject's heart, from interference pulses, e.g. from a pump in the fluid circuit. The device repeatedly (iteratively) processes a signal segment by alternately subtracting (S3) a template signal from the signal segment, and applying a refinement processing (S6) to the resulting difference signal to generate a new template signal. By proper selection (S2) of the initial template signal, consecutive difference signals will alternately approximate the sequence of interference pulses in the signal segment and the sequence of physiological pulses in the signal segment. The refinement processing (S6) aims at alternately cleaning up unwanted residuals from interference pulses and physiological pulses, respectively, in the respective difference signal, so as to improve the accuracy of the template signal between the subtractions.Type: ApplicationFiled: September 8, 2014Publication date: July 21, 2016Inventors: Mattias HOLMER, Bo OLDE, Kristian SOLEM, Leif SORNMO
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Publication number: 20150306293Abstract: A monitoring device (7) operates on a pressure signal from a blood processing apparatus, e.g. a dialysis machine, which has an extracorporeal blood circuit connected to a vascular system of a subject for pumping blood through a dialyzer, and a treatment fluid supply system for pumping a treatment fluid through the dialyzer. The monitoring device (7) has a first input block (50) for obtaining a first pressure signal (y) from a first pressure sensor (6a) in the extracorporeal blood circuit, and a second input block (51) for obtaining a second pressure signal (w) from a second pressure sensor (6b) in the treatment fluid supply system.Type: ApplicationFiled: December 11, 2013Publication date: October 29, 2015Inventors: Jan Sternby, Mattias Holmer, Bo Olde, Kristian Solem, Anders Wallenborg, Per Hansson
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Publication number: 20140298891Abstract: A device monitors a blood path from a blood vessel access of a human subject through an extracorporeal blood processing apparatus and back to the blood vessel access. A pumping device in the blood path is operable to pump blood through the blood path from the blood withdrawal device to the blood return device. The monitoring device obtains pressure data from a pressure sensor arranged upstream of the pumping device in the blood path, and processes the pressure data for detection of a disruption of the blood path downstream of the pumping device, e.g. caused by VND (Venous Needle Dislodgement).Type: ApplicationFiled: May 23, 2012Publication date: October 9, 2014Applicant: Gambro Lundia ABInventors: Mattias Holmer, Bo Olde, Kristian Solem
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Publication number: 20140248600Abstract: A blood treatment apparatus adapted to preserve a blood treatment unit between blood treatment sessions. The blood treatment apparatus is configured to i) perform a blood treatment session and thereby use the blood treatment unit, ii) fill the blood treatment unit with a preservation fluid comprising at least one treatment fluid concentrate of a type that is used to prepare the treatment fluid, iii) maintain the preservation fluid in the blood treatment unit until a next blood treatment session is prepared, iv) dispatch the preservation fluid from the blood treatment unit in preparation of a next blood treatment session, and v) perform a next blood treatment session and thereby extend the use of the blood treatment unit. A related method is also described.Type: ApplicationFiled: May 23, 2012Publication date: September 4, 2014Applicant: Gambro Lundia ABInventors: Thomas Hertz, Mattias Holmer, Lennart Jonsson, Anders Wieslander, Helena Jeppsson
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Publication number: 20140231319Abstract: A device removes first pulses in a pressure signal of a pressure sensor which is arranged in a fluid containing system to detect the first pulses, which originate from a first pulse generator, and second pulses, which originate from a second pulse generator. The first pulse generator operates in a sequence of pulse cycles, each pulse cycle resulting in at least one first pulse. The device repetitively obtains a current data sample, calculates a corresponding reference value and subtracts the reference value from the current data sample. The reference value is calculated as a function of other data sample(s) in the same pressure signal. The fluid containing system may include an extracorporeal blood flow circuit, e.g. as part of a dialysis machine, and a cardiovascular system of a human patient.Type: ApplicationFiled: June 20, 2012Publication date: August 21, 2014Applicant: GAMBRO LUNDIA ABInventors: Bo Olde, Kristian Solem, Mattias Holmer, Jan Sternby
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Publication number: 20140174542Abstract: A disposable for use in blood treatment including a blood treatment unit and two membrane pumps connected in parallel on one side of the blood treatment unit. The disposable is operable in a single-needle mode, in which the pumps generate a pulsatile flow of blood through the blood treatment unit, and in a double-needle mode, in which the pumps generate an essentially continuous flow of blood through the blood treatment unit. The pumps connect to a supply of treatment fluid such that alternating flows of treatment fluid causes the pumps to generate the desired flows of blood in the single-needle and double-needle modes. The treatment fluid may be used as motive fluid for displacing the blood in the membrane pumps and/or as control fluid for controlling opening and/or closing of upstream and downstream commutation valves in the membrane pumps.Type: ApplicationFiled: June 18, 2012Publication date: June 26, 2014Applicant: GAMBRO LUNDIA ABInventors: Olof Jansson, Mattias Holmer, Eddie Nilsson, Lennart Jonsson
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Publication number: 20140165733Abstract: A method for detecting a property of an extracorporeal line set in an apparatus for extracorporeal blood treatment. The extracorporeal line set is arranged to be connected to a patient. The method includes: measuring a first pressure in a flow path, measuring a second pressure in the flow path, comparing the first and second pressures, and determining a detected extracorporeal line set property based on the pressure comparison.Type: ApplicationFiled: May 28, 2012Publication date: June 19, 2014Applicant: Gambro Lundia ABInventors: Olof Jansson, Mattias Holmer, Anders Nilsson
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Publication number: 20140061132Abstract: A washer press apparatus for washing and dewatering a wide range of solids concentrations of pulp in liquid suspensions includes multiple distinct displacement wash zones about a drum with multiple nips.Type: ApplicationFiled: November 8, 2013Publication date: March 6, 2014Applicant: Gambro Lundia ABInventors: Lennart JONSSON, Olof Jansson, Mattias Holmer, Jan Sternby, Anders Nilsson, Per Hansson
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Patent number: 8663127Abstract: A device is directly or indirectly connectable to a patient for determining a volume related to the lungs of the patient. The device has an inspiration part through which a breathing gas passes towards the patient, and an expiration part through which the breathing gas passes away from the patient. The inspiration part has a mouthpiece for introducing a change of the gas composition in the breathing gas. The device implements a method for determining the volume with a detector being arranged in the expiration part that measures a measuring parameter which is dependent on the change in the gas composition, and with a calculation unit connected to the detector unit that determines the variation in the measuring parameter, and determines the volume from the determined variation.Type: GrantFiled: April 7, 2005Date of Patent: March 4, 2014Assignee: Maquet Critical Care ABInventors: Erik Cardelius, Lars Wallén, Åke Larsson, Mikael Hanson, Mattias Holmer
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Patent number: 8652082Abstract: A proposed blood treatment apparatus includes: a blood treatment unit, at least one fluid pump and at least one blood pump. The blood treatment unit is configured to receive untreated blood and fresh blood treatment fluid, and emit treated blood and used blood treatment fluid. The fluid pumps are configured to pass blood treatment fluid through the blood treatment unit. The blood pumps are configured to extract untreated blood from a blood source, pass extracted blood through the blood treatment unit and deliver treated blood to a target vessel. Additionally, at least one of the fluid pumps is configured to control the operation of at least one blood pump via the blood treatment fluid. Moreover, at least one of the blood pumps is integrated into a joint apparatus element, which includes the blood treatment unit. Thus, this blood pump and the unit may be mounted as well as be discarded jointly.Type: GrantFiled: April 14, 2009Date of Patent: February 18, 2014Assignee: Gambro Lundia ABInventors: Lennart Jönsson, Olof Jansson, Mattias Holmer, Eddie Nilsson
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Publication number: 20130319920Abstract: A blood treatment apparatus comprising: a blood treatment unit; a blood line configured to extract blood from a blood source, pass the blood through the blood treatment unit and deliver treated blood to a target vessel; and a fluid line configured pass treatment fluid through the blood treatment unit and deliver used treatment fluid to a fluid sink. A flow divider is arranged in the fluid line separates treatment fluid into to a first fluid section and a second fluid section, thereby electrically isolating the fluid sections such that electrical current flowing in the fluid line between the fluid sections is limited. Related manufacturing and verification methods are also described.Type: ApplicationFiled: September 14, 2011Publication date: December 5, 2013Applicant: GAMBRO LUNDIA ABInventors: Per Hansson, Thomas Hertz, Mattias Holmer, Lennart Jonsson, Anders Nilsson, Anders Wallenborg, Johan Andersson
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Patent number: 8580110Abstract: A proposed blood treatment apparatus includes: a blood treatment unit, a pair of fluid pumps and a pair blood pumps. The blood treatment unit is configured to receive untreated blood and fresh blood treatment fluid, and emit treated blood and used blood treatment fluid. The fluid pumps are configured to pass blood treatment fluid through the blood treatment unit. The blood pumps are configured to extract untreated blood from a blood source, pass extracted blood through the blood treatment unit and deliver treated blood to a target vessel. Additionally, the fluid pumps are configured to control the operation of the blood pumps via the blood treatment fluid. Moreover, a flow control device is configured to control a trans-membrane flow between the blood side and the a fluid side of the blood treatment unit. Hence, for instance ultrafiltration can be adjusted to a desired level in a very straightforward manner.Type: GrantFiled: April 14, 2009Date of Patent: November 12, 2013Assignee: Gambro Lundia ABInventors: Lennart Jönsson, Olof Jansson, Mattias Holmer, Jan Sternby, Anders Nilsson, Per Hansson
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Patent number: 8545427Abstract: A blood treatment apparatus, including a blood treatment unit configured to receive untreated blood and fresh blood treatment fluid, and emit treated blood and used blood treatment fluid, a pair of fluid pumps configured to pass blood treatment fluid through the blood treatment unit, a pair of blood pumps configured to extract untreated blood from a blood source, pass extracted blood through the blood treatment unit and deliver treated blood to a target vessel, each blood pump including a pump chamber and a flexible member separating the pumping chamber into a first blood accumulating container and a second working fluid accumulating container where the flexible member is configured to vary a volume relationship between the first and the second accumulation containers.Type: GrantFiled: October 12, 2009Date of Patent: October 1, 2013Assignee: Gambro Lundia ABInventors: Mattias Holmer, Lennart Jönsson, Anders Wallenborg, Per Hansson
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Patent number: 8485999Abstract: A blood treatment apparatus includes: a blood treatment unit, a pair of fluid pumps and a pair of blood pumps. The blood treatment unit is configured to receive untreated blood and fresh blood treatment fluid, and emit treated blood and used blood treatment fluid. The fluid pumps are configured to pass blood treatment fluid through the blood treatment unit. The blood pumps are configured to extract untreated blood from a blood source, pass extracted blood through the blood treatment unit and deliver treated blood to a target vessel. Flow measurement device which determines at least one blood flow parameter reflecting an average flow in relation to the blood treatment unit during a well-defined period of operation of the apparatus, for example while completing one operation cycle.Type: GrantFiled: October 12, 2009Date of Patent: July 16, 2013Assignee: Gambro Lundia ABInventors: Mattias Holmer, Lennart Jönsson, Anders Wallenborg, Per Hansson
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Publication number: 20110201988Abstract: A blood treatment apparatus includes: a blood treatment unit, a pair of fluid pumps and a pair of blood pumps. The blood treatment unit is configured to receive untreated blood and fresh blood treatment fluid, and emit treated blood and used blood treatment fluid. The fluid pumps are configured to pass blood treatment fluid through the blood treatment unit. The blood pumps are configured to extract untreated blood from a blood source, pass extracted blood through the blood treatment unit and deliver treated blood to a target vessel. Flow measurement device which determines at least one blood flow parameter reflecting an average flow in relation to the blood treatment unit during a well-defined period of operation of the apparatus, for example while completing one operation cycle.Type: ApplicationFiled: October 12, 2009Publication date: August 18, 2011Inventors: Mattias Holmer, Lennart Jönsson, Anders Wallenborg, Per Hansson
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Publication number: 20110201989Abstract: A blood treatment apparatus, including a blood treatment unit configured to receive untreated blood and fresh blood treatment fluid, and emit treated blood and used blood treatment fluid, a pair of fluid pumps configured to pass blood treatment fluid through the blood treatment unit, a pair of blood pumps configured to extract untreated blood from a blood source, pass extracted blood through the blood treatment unit and deliver treated blood to a target vessel, each blood pump including a pump chamber and a flexible member separating the pumping chamber into a first blood accumulating container and a second working fluid accumulating container where the flexible member is configured to vary a volume relationship between the first and the second accumulation containers.Type: ApplicationFiled: October 12, 2009Publication date: August 18, 2011Applicant: Gambro Lundia ABInventors: Mattias Holmer, Lennart Jönsson, Anders Wallenborg, Per Hansson
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Patent number: 7922898Abstract: A circuit for extracorporeal blood treatment in which a flow-inverting device is interposed between a blood treatment unit and a blood pump placed on an artery branch connected with a vascular access of a patient. The flow-inverting device allows the blood flow within the filtering unit to be kept unchanged even following an inverted circulation in the patient-side artery and vein branches controlled by the blood pump.Type: GrantFiled: May 5, 2008Date of Patent: April 12, 2011Assignee: Gambro Lundia ABInventors: Lennart Jonsson, Mattias Holmer, Per Hansson
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Publication number: 20110046535Abstract: A proposed blood treatment apparatus includes: a blood treatment unit, at least one fluid pump and at least one blood pump. The blood treatment unit is configured to receive untreated blood and fresh blood treatment fluid, and emit treated blood and used blood treatment fluid. The fluid pumps are configured to pass blood treatment fluid through the blood treatment unit. The blood pumps are configured to extract untreated blood from a blood source, pass extracted blood through the blood treatment unit and deliver treated blood to a target vessel. Additionally, at least one of the fluid pumps is configured to control the operation of at least one blood pump via the blood treatment fluid. Moreover, at least one of the blood pumps is integrated into a joint apparatus element, which includes the blood treatment unit. Thus, this blood pump and the unit may be mounted as well as be discarded jointly.Type: ApplicationFiled: April 14, 2009Publication date: February 24, 2011Inventors: Lennart Jönsson, Olof Jansson, Mattias Holmer, se Nilsson
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Publication number: 20110024353Abstract: A proposed blood treatment apparatus includes: a blood treatment unit, a pair of fluid pumps and a pair blood pumps. The blood treatment unit is configured to receive untreated blood and fresh blood treatment fluid, and emit treated blood and used blood treatment fluid. The fluid pumps are configured to pass blood treatment fluid through the blood treatment unit. The blood pumps are configured to extract untreated blood from a blood source, pass extracted blood through the blood treatment unit and deliver treated blood to a target vessel. Additionally, the fluid pumps are configured to control the operation of the blood pumps via the blood treatment fluid. Moreover, a flow control device is configured to control a trans-membrane flow between the blood side and the a fluid side of the blood treatment unit. Hence, for instance ultrafiltration can be adjusted to a desired level in a very straightforward manner.Type: ApplicationFiled: April 14, 2009Publication date: February 3, 2011Inventors: Lennart Jönsson, Olof Jansson, Mattias Holmer, Jan Sternby, Anders Nilsson, Per Hansson
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Publication number: 20080208102Abstract: It is disclosed a circuit for extracorporeal blood treatment in which a flow-inverting device is interposed between a blood treatment unit and a blood pump placed on an artery branch connected with a vascular access of a patient. The flow-inverting device allows the blood flow within the filtering unit to be kept unchanged even following an inverted circulation in the patient-side artery and vein branches controlled by the blood pump.Type: ApplicationFiled: May 5, 2008Publication date: August 28, 2008Inventors: Lennart Jonsson, Mattias Holmer, Per Hansson