| 摘要 |
Arrangement for continuous blood sampling with a flexible hose 22 which is provided at one end with a cannula and whose other end is connected to a blood collection container, which hose is introduced into an arc-shaped groove 17 formed in a surface 10 of a housing 1, where it is continuously subjected during operation to a pumping action in the form of partial brief compressions in the direction from the cannula end towards its container end, and which compressions are generated by a rotating rotor 8 which, with part of its periphery, forms part of the wall of the arc-shaped groove, and where at least part of the wall part of the groove opposite the wall part formed by the rotor 8 is a curved surface section 16 of an element 15 which can be moved towards and away from the rotor in a guide 12, in the form of a wall part which is provided with a curved side surface 16 and which can be displaced between a position completing the contour of the groove 17 and a position located outside the contour of the groove, and with a cover plate 19 which is pivotably arranged on the housing 1 and is designed to be able to pivot between a position completely covering the grooved surface 10 of the housing and a position in which at least the grooved part of the surface is exposed. <IMAGE> |
