Abstract: The invention relates to an improved linear microdialysis probe comprising a continuous length of flexible tubing (1) having at least one window (4) formed therein, said window covering at least one part of the circumference of the tubing, while the remaining part forms at least one unbroken connection between a first end of said tubing and a second end of said tubing, said ends adapted to be attached to an inlet for perfusion liquid and the other end forming an outlet for the dialysate, said at least one window (4) exposing a tubular semipermeable membrane (2).

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.

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.

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.

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.