Patents Assigned to CMA/Microdialysis AB
  • Patent number: 8229546
    Abstract: The invention relates to a microdialysis catheter comprising a multilumen tube (10) and a membrane (11), said tube exhibiting at least two longitudinally arranged inner channels (13,14), said channels extending from a proximal (20) end of the tube to the distal end (21) of the tube, whereat through-holes (12,15) are provided, one from each of said at least two channels to the outside of said tube, said channels (13,14) blocked for passage of liquid distally of the respective through-holes, a tubular membrane (11) arranged circumferentially around the tube (10) such as to cover the at least two through -holes (12,15), said membrane is sealingly fastened (22) to the tube thereby forming a dialysis chamber (18) between the tube and the membrane.
    Type: Grant
    Filed: October 17, 2007
    Date of Patent: July 24, 2012
    Assignee: CMA Microdialysis AB
    Inventors: Henrik Falkén, Jan Liska
  • Patent number: 6929618
    Abstract: A microdialysis probe includes a dialysis membrane located and supported between a closed distal end of the probe and a proximal end of the same, the membrane essentially surrounding a space for passage of perfusion liquid. The probe has an inlet and outlet for perfusion liquid, where a position indicating object at the distal part of the probe allows non-invasive examination of the location of the distal part of the microdialysis probe.
    Type: Grant
    Filed: July 14, 2000
    Date of Patent: August 16, 2005
    Assignee: CMA/Microdialysis AB
    Inventor: Roger Johansson
  • Patent number: 6805683
    Abstract: A microdialysis probe includes a dialysis membrane located and supported between a closed distal end of the probe and a proximal end of the same, which membrane essentially-surrounding a space for passage of perfusion liquid. The probe has an inlet and outlet for perfusion liquid. The probe exhibits a deformable mesh sleeve adapted to enclose and protect at least the dialysis membrane, the proximal end of the deformable being fastened to the probe between the proximal end of the probe and the dialysis membrane.
    Type: Grant
    Filed: May 10, 2002
    Date of Patent: October 19, 2004
    Assignee: CMA/Microdialysis AB
    Inventor: Roger Johansson
  • Patent number: 5925018
    Abstract: An infusion and microdialysis pump comprises a casing (100, 200) and an insertable cylinder and plunger (300) of the injection syringe type. Seated on the plunger rod is a runner element (4) which runs on a motor-driven screw (3), thereby to cause the plunger to dispense fluid.
    Type: Grant
    Filed: April 8, 1997
    Date of Patent: July 20, 1999
    Assignee: CMA/Microdialysis AB
    Inventor: Urban Ungerstedt
  • Patent number: 5869774
    Abstract: Apparatus for taking up liquid batches, comprising a take-up tube (10), a metering pump (20) for drawing liquid into the take-up tube by suction, and a washing pump (30) which functions to pump washing solution through the take-up tube in a direction opposite to the liquid take-up direction, through the medium of a washing tube (50). The washing pump is a self-sealing displacement pump.
    Type: Grant
    Filed: April 9, 1997
    Date of Patent: February 9, 1999
    Assignee: CMA/Microdialysis AB
    Inventors: Ulf Backlund, Urban Ungerstedt