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    • 10. 发明授权
    • Sealed pipette
    • 密封移液器
    • US09566580B2
    • 2017-02-14
    • US13970722
    • 2013-08-20
    • THERMO FISHER SCIENTIFIC OY
    • Ari JaaskelainenMikael LindJuha TelimaaAaro Tuominen
    • B01L3/02B01L3/00G01N35/10
    • B01L3/0275B01L3/021B01L3/0217B01L2200/02B01L2200/025B01L2400/0478G01N35/1074Y10T29/49826
    • The invention relates to liquid dispensing and concerns a pipette comprising at least one aspiration channel with a piston. At the lower end of the aspiration channel there is an extension channel (3) and at its end a pipette tip mounting piece (4) onto which a pipette tip (5) is attached. On the pipette tip mounting piece there is a surrounding groove (17) and in the groove a sealing ring (18). The width of the groove in the axial direction is at least 1.1 times the thickness of the sealing ring in the axial direction. When the mounting piece is pushed into the pipette tip, the inner wall of the tip can move the sealing ring upwards in the groove. The construction can provide a reliable sealing despite of inherent dimension differences between different tips and mounting pieces.
    • 本发明涉及液体分配,涉及包括至少一个具有活塞的抽吸通道的移液管。 在抽吸通道的下端具有延伸通道(3),并在其末端附接吸移管尖端(5),移液管尖端安装件(4)。 在移液管末端安装件上有一个周围的凹槽(17),在凹槽中有一个密封圈(18)。 槽的轴向宽度为密封环的轴向厚度的1.1倍以上。 当安装件被推入吸头时,尖端的内壁可以将密封环向上移动到槽中。 尽管不同的尖端和安装件之间存在固有的尺寸差异,但该结构可以提供可靠的密封。