Patents by Inventor Stefan LANDHOLM

Stefan LANDHOLM 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).

  • Patent number: 11590269
    Abstract: An apparatus for ultrafiltration of a patient being overhydrated due to congestive heart failure, comprising a tube set including a connector (21) for connection to a patient line (3) for access to the peritoneal cavity of the patient. A flow pump (41-43) is arranged for addition and removal outflow and inflow (recirculation) of fluid from/to the peritoneal cavity. An osmotic agent peristaltic pump (16) is arranged for replenishment of glucose solution to the fluid added to the peritoneal cavity for promoting ultrafiltration. The glucose is replenished intermittently for keeping a concentration of glucose substantially constant in the peritoneal cavity. The flow pump comprises a pressure chamber (43) with rigid walls and a flexible pump bag (41) arranged therein. An air pump (45) pressurizes the chamber for outflow of fluid from the peritoneal cavity by a sub pressure and inflow of fluid to the peritoneal cavity by an overpressure, which pressures are maintained within safe limits.
    Type: Grant
    Filed: February 27, 2020
    Date of Patent: February 28, 2023
    Assignee: TRIOMED AB
    Inventors: Mikael Axelsson, Stefan Landholm, Eva Persson, Hans Bengtsson
  • Patent number: 11583621
    Abstract: A cartridge to be used for adsorption dialysis. A container having flexible walls are arranged to provide an inner space enclosing adsorption powder, comprising activated carbon, a phosphate adsorbent and a potassium ion adsorbent and other adsorbents. A sufficient amount of activated carbon is provided for adsorption of urea by the activated carbon. The cartridge forms a vacuum-packed transportation cartridge by generating a sub-pressure in the inner space, whereby the powder particles are immobilized and the cartridge becomes stiff. Before use, the cartridge is primed by introducing a liquid into the inner space, which introduction takes place at a low pressure. During use, dialysis solution is circulated through the cartridge, which is still exposed to a sub-pressure, whereby the flexible walls are sucked against the powder material.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: February 21, 2023
    Assignee: TRIOMED AB
    Inventors: Anders Wallenås, Nina Meinander, Carin Malmborg, Stefan Landholm, Hans Bengtsson
  • Publication number: 20200338251
    Abstract: Method and apparatus for ultrafiltration of a patient being overhydrated due to congestive heart failure, comprising a cassette having four inlets/outlets. A patient tube is connected to a patient connector, intended to be connected to a patient line for access to a peritoneal cavity of the patient. The patient tube comprises a flow pump for addition and removal of a peritoneal fluid between the cassette and the peritoneal cavity. The fluid is introduced into an intermittent bag controlled by an intermittent valve and then returned the same way back to the peritoneal cavity. Glucose is metered into the fluid entering the peritoneal cavity by means of a glucose pump. Glucose is replenished continuously or intermittently for keeping a concentration of the osmotic agent substantially constant in the peritoneal cavity. After treatment, the peritoneal fluid is drained to a drain bag, wherein the drain tube comprises a drain valve and an albumin filter.
    Type: Application
    Filed: July 9, 2020
    Publication date: October 29, 2020
    Applicant: TRIOMED AB
    Inventors: Anders WALLENÅS, Lars WRAMNER, Stefan LANDHOLM
  • Patent number: 10709831
    Abstract: Method and apparatus for ultrafiltration of a patient being overhydrated due to congestive heart failure, comprising a cassette having four inlets/outlets. A patient tube is connected to a patient connector, intended to be connected to a patient line for access to a peritoneal cavity of the patient. The patient tube comprises a flow pump for addition and removal of a peritoneal fluid between the cassette and the peritoneal cavity. The fluid is introduced into an intermittent bag controlled by an intermittent valve and then returned the same way back to the peritoneal cavity. Glucose is metered into the fluid entering the peritoneal cavity by means of a glucose pump. Glucose is replenished continuously or intermittently for keeping a concentration of the osmotic agent substantially constant in the peritoneal cavity. After treatment, the peritoneal fluid is drained to a drain bag, wherein the drain tube comprises a drain valve and an albumin filter.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: July 14, 2020
    Assignee: TRIOMED AB
    Inventors: Anders Wallenås, Lars Wramner, Stefan Landholm
  • Publication number: 20200188570
    Abstract: An apparatus for ultrafiltration of a patient being overhydrated due to congestive heart failure, comprising a tube set including a connector (21) for connection to a patient line (3) for access to the peritoneal cavity of the patient. A flow pump (41-43) is arranged for addition and removal outflow and inflow (recirculation) of fluid from/to the peritoneal cavity. An osmotic agent peristaltic pump (16) is arranged for replenishment of glucose solution to the fluid added to the peritoneal cavity for promoting ultrafiltration. The glucose is replenished intermittently for keeping a concentration of glucose substantially constant in the peritoneal cavity. The flow pump comprises a pressure chamber (43) with rigid walls and a flexible pump bag (41) arranged therein. An air pump (45) pressurizes the chamber for outflow of fluid from the peritoneal cavity by a sub pressure and inflow of fluid to the peritoneal cavity by an overpressure, which pressures are maintained within safe limits.
    Type: Application
    Filed: February 27, 2020
    Publication date: June 18, 2020
    Applicant: TRIOMED AB
    Inventors: Mikael AXELSSON, Stefan LANDHOLM, Eva PERSSON, Hans BENGTSSON
  • Patent number: 10576195
    Abstract: An apparatus for ultrafiltration of a patient being overhydrated due to congestive heart failure, comprising a tube set including a connector for connection to a patient line for access to the peritoneal cavity of the patient. A flow pump is arranged for addition and removal outflow and inflow (recirculation) of fluid from/to the peritoneal cavity. An osmotic agent peristaltic pump is arranged for replenishment of glucose solution to the fluid added to the peritoneal cavity for promoting ultrafiltration. The glucose is replenished intermittently for keeping a concentration of glucose substantially constant in the peritoneal cavity. The flow pump comprises a pressure chamber with rigid walls and a flexible pump bag arranged therein. An air pump pressurizes the chamber for outflow of fluid from the peritoneal cavity by a sub pressure and inflow of fluid to the peritoneal cavity by an overpressure, which pressures are maintained within safe limits.
    Type: Grant
    Filed: November 20, 2015
    Date of Patent: March 3, 2020
    Assignee: TRIOMED AB
    Inventors: Mikael Axelsson, Stefan Landholm, Eva Persson, Hans Bengtsson
  • Publication number: 20180140765
    Abstract: A cartridge to be used for adsorption dialysis. A container having flexible walls are arranged to provide an inner space enclosing adsorption powder, comprising activated carbon, a phosphate adsorbent and a potassium ion adsorbent and other adsorbents. A sufficient amount of activated carbon is provided for adsorption of urea by the activated carbon. The cartridge forms a vacuum-packed transportation cartridge by generating a sub-pressure in the inner space, whereby the powder particles are immobilized and the cartridge becomes stiff. Before use, the cartridge is primed by introducing a liquid into the inner space, which introduction takes place at a low pressure. During use, dialysis solution is circulated through the cartridge, which is still exposed to a sub-pressure, whereby the flexible walls are sucked against the powder material.
    Type: Application
    Filed: May 27, 2016
    Publication date: May 24, 2018
    Applicant: TRIOMED AB
    Inventors: Anders WALLENÅS, Nina MEINANDER, Carin MALMBORG, Stefan LANDHOLM, Hans BENGTSSON
  • Publication number: 20170281848
    Abstract: An apparatus for ultrafiltration of a patient being overhydrated due to congestive heart failure, comprising a tube set including a connector for connection to a patient line for access to the peritoneal cavity of the patient. A flow pump is arranged for addition and removal outflow and inflow (recirculation) of fluid from/to the peritoneal cavity. An osmotic agent peristaltic pump is arranged for replenishment of glucose solution to the fluid added to the peritoneal cavity for promoting ultrafiltration. The glucose is replenished intermittently for keeping a concentration of glucose substantially constant in the peritoneal cavity. The flow pump comprises a pressure chamber with rigid walls and a flexible pump bag arranged therein. An air pump pressurizes the chamber for outflow of fluid from the peritoneal cavity by a sub pressure and inflow of fluid to the peritoneal cavity by an overpressure, which pressures are maintained within safe limits.
    Type: Application
    Filed: November 20, 2015
    Publication date: October 5, 2017
    Applicant: TRIOMED AB
    Inventors: Mikael AXELSSON, Stefan LANDHOLM, Eva PERSSON, Hans BENGTSSON
  • Publication number: 20170072125
    Abstract: Method and apparatus for ultrafiltration of a patient being overhydrated due to congestive heart failure, comprising a cassette having four inlets/outlets. A patient tube is connected to a patient connector, intended to be connected to a patient line for access to a peritoneal cavity of the patient. The patient tube comprises a flow pump for addition and removal of a peritoneal fluid between the cassette and the peritoneal cavity. The fluid is introduced into an intermittent bag controlled by an intermittent valve and then returned the same way back to the peritoneal cavity. Glucose is metered into the fluid entering the peritoneal cavity by means of a glucose pump. Glucose is replenished continuously or intermittently for keeping a concentration of the osmotic agent substantially constant in the peritoneal cavity. After treatment, the peritoneal fluid is drained to a drain bag, wherein the drain tube comprises a drain valve and an albumin filter.
    Type: Application
    Filed: February 27, 2015
    Publication date: March 16, 2017
    Applicant: TRIOMED AB
    Inventors: Anders WALLENÅS, Lars WRAMNER, Stefan LANDHOLM