Abstract: The invention regards a micro dosage peristaltic pump (2) for micro dosage of a fluid, comprising: a housing (4) with an inner annular surface (5), wherein the annular surface comprises an opening (12), a flexible tube (6), wherein a section of the tube is placed upon the annular surface (5), a compression element (7) configured for peristaltic engagement with the section of the tube placed upon the annular surface (5), at least one counter acting element (11), an arm (10) comprising the compression element (7) and the counter acting element (11), wherein the arm (10) is rotatably mounted with a rotation axis perpendicular to the arm, driving means for rotating the arm (10), and thereby moving the compression element (7) and the counter acting element (11) in a circular motion.

Abstract: The invention regards a micro dosage peristaltic pump (3) for micro dosage of a fluid, comprising: a housing (4) with an inner surface (5) comprising at least one circular section (6), a flexible tube (8) placed upon the at least one circular section of the surface, a flexible layer (9) placed between the surface and the flexible tube, at least one compression element (10), driving means for moving the at least one compression element in an eccentric circular motion having a circular circumference (14), whereby the at least one compression element is peristaltically engaged at the circumference with the tube placed upon the circular section of the surface.

Abstract: A fluid sampling system comprising a housing, a first pump means for withdrawing at least one fluid sample from a first sample site, means for returning at least part of the at one fluid sample to a second sample site, transferring means for transferring at least one volume of the at least one first fluid to a sampling means, second pump means for providing at least one active substance, at least one connection to a reservoir containing the at least one active substance, and at least one energy source for driving at least the first and second pump means.

Abstract: The invention regards a micro dosage peristaltic pump (2) for micro dosage of a fluid, comprising: a housing (4) with an inner annular surface (5), wherein the annular surface comprises an opening (12), a flexible tube (6), wherein a section of the tube is placed upon the annular surface (5), a compression element (7) configured for peristaltic engagement with the section of the tube placed upon the annular surface (5), at least one counter acting element (11), an arm (10) comprising the compression element (7) and the counter acting element (11), wherein the arm (10) is rotatably mounted with a rotation axis perpendicular to the arm, driving means for rotating the arm (10), and thereby moving the compression element (7) and the counter acting element (11) in a circular motion.

Abstract: The invention regards a micro dosage peristaltic pump (3) for micro dosage of a fluid, comprising: a housing (4) with an inner surface (5) comprising at least one circular section (6), a flexible tube (8) placed upon the at least one circular section of the surface, a flexible layer (9) placed between the surface and the flexible tube, at least one compression element (10), driving means for moving the at least one compression element in an eccentric circular motion having a circular circumference (14), whereby the at least one compression element is peristaltically engaged at the circumference with the tube placed upon the circular section of the surface.

Abstract: A multi lumen catheter comprising a proximal end and distal end said catheter further comprising; a first lumen for a first fluid said first lumen having a first proximal opening and a first distal opening for receiving a fluid, second lumen for a second fluid said second lumen having a second proximal opening and a second distal opening for delivering a second fluid, a third lumen having a third proximal opening and a third distal opening, wherein the first distal opening is arranged with respect to the second distal opening so that when in use at least part of the first fluid which enters the first lumen through the first distal opening has passed across the second distal opening such that the first fluid which enters the first lumen comprise at least a part of the second fluid.

Abstract: A multi lumen catheter comprising a proximal end and distal end said catheter further comprising; a first lumen for a first fluid said first lumen having a first proximal opening and a first distal opening for receiving a fluid, second lumen for a second fluid said second lumen having a second proximal opening and a second distal opening for delivering a second fluid, a third lumen having a third proximal opening and a third distal opening, wherein the first distal opening is arranged with respect to the second distal opening so that when in use at least part of the first fluid which enters the first lumen through the first distal opening has passed across the second distal opening such that the first fluid which enters the first lumen comprise at least a part of the second fluid.

Abstract: A fluid sampling system comprising a housing, a first pump means for withdrawing at least one fluid sample from a first sample site, means for returning at least part of the at one fluid sample to a second sample site, transferring means for transferring at least one volume of the at least one first fluid to a sampling means, second pump means for providing at least one active substance, at least one connection to a reservoir containing the at least one active substance, and at least one energy source for driving at least the first and second pump means.