| 摘要 |
A pipetting device comprises a housing ( 1 ) with a handle ( 2 ) and a pipette ( 4 ) holder assembly ( 3 ), wherein the housing ( 1 ) end portion ( 7 ) incorporates a spherical raceway ( 16 ) to which the pipette ( 4 ) holding assembly ( 3 ) in mounted by the means of a connecting assembly ( 17 ) capable of sliding on the spherical raceway ( 16 ) at the housing ( 1 ) end portion ( 7 ) to facilitate the change of orientation angle of the pipette ( 4 ) axle in every plane with respect to the handle ( 2 ). The connecting assembly ( 17 ) comprises a first slider ( 18 ) slidably set in a rectangular opening ( 19 ) in the spherical raceway ( 16 ) at the housing ( 1 ) end portion ( 7 ), and a second slider ( 20 ) slidably set in a rectangular opening ( 21 ) in the first slider ( 18 ).
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