초록 ▼

A device is disclosed for pipetting a liquid, comprising a pipette body enclosing a pipette volume, into which a fluid medium can be placed and in which an actuator that controllably displaces the medium in the pipette volume is provided, as well as a pipette tip, which can be connected to the pipet

A device is disclosed for pipetting a liquid, comprising a pipette body enclosing a pipette volume, into which a fluid medium can be placed and in which an actuator that controllably displaces the medium in the pipette volume is provided, as well as a pipette tip, which can be connected to the pipette volume in a fluid-tight manner. The present invention is distinguished by the pipette volume and the pipette tip being connected via a fluid-tight connecting means directly or indirectly to each other in such a manner that the pipette tip is moveable relative to the pipette volume.

대표청구항 ▼

What is claimed is: 1. A device for pipetting a liquid, comprising a pipette body, enclosing a pipette volume, for contacting a fluid medium, an actuator for controllably displacing the fluid medium in the pipette volume, a pipette tip, which is connectable to the pipette volume in a fluid-tight ma

What is claimed is: 1. A device for pipetting a liquid, comprising a pipette body, enclosing a pipette volume, for contacting a fluid medium, an actuator for controllably displacing the fluid medium in the pipette volume, a pipette tip, which is connectable to the pipette volume in a fluid-tight manner and movable relative thereto, and a holding unit bearing the pipette tip, the pipette tip being axially movable in the holding unit; and wherein the pipette volume and the pipette tip are connected by a fluid-tight flexible tube directly or indirectly to each other, the fluid-tight flexible tube, when moving, has negligible volume change during deformation thereof and the holding unit and the pipette body are spaced apart by a fixed distance. 2. The device according to claim 1, wherein: the flexible tube has minimal expandability. 3. The device according to claim 2, comprising: an intermediate piece, provided the holding unit, to which the fluid-tight flexible tube and, a replaceable pipette tip are attachable. 4. A pipette array comprising an array of devices according to claim 3, wherein: the devices are disposed in a spatially fixed arrangement relative to one another, and the array includes pipette tips which are borne together in the holding unit. 5. The pipette array according to claim 3, wherein: pipette tips of the array of devices are linearly moveable in parallel. 6. The pipette array according to claim 3, wherein: the pipette tips in an idle position are disposed in a plane. 7. A pipette array comprising an array of devices according to claim 2, wherein: the devices are disposed in a spatially fixed arrangement relative to one another, and the array includes pipette tips which are borne together in the holding unit. 8. The device according to claim 2, wherein: the pipette tip is one-piece and is connected directly to the flexible tube. 9. The device according to claim 1, wherein: the pipette tip is spring-tensioned in the holding unit and is movable relative to the holding device from an idle position by a force acting against the spring. 10. The device according to claim 9, comprising: an intermediate piece, provided the holding unit, to which the fluid-tight flexible tube and, a replaceable pipette tip are attachable. 11. A pipette array comprising an array of devices according to claim 10, wherein: the devices are disposed in a spatially fixed arrangement relative to one another, and the array includes pipette tips which are borne together in the holding unit. 12. A pipette array comprising an array of devices according to claim 9, wherein: the devices are disposed in a spatially fixed arrangement relative to one another, and the array includes pipette tips which are borne together in the holding unit. 13. The device according to claim 9, wherein: wherein the pipette tip is one-piece and is connected directly to the flexible tube. 14. The device according to claim 1, wherein: the pipette tip is one-piece and is connected directly to the fluid-tight flexible tube. 15. The device according to claim 14, comprising: an intermediate piece, provided the holding unit, to which the fluid-tight flexible tube and, a replaceable pipette tip are attachable. 16. A pipette array comprising an array of devices according to claim 15, wherein: the devices are disposed in a spatially fixed arrangement relative to one another, and the array includes pipette tips which are borne together in the holding unit. 17. A pipette array comprising an array of devices according to claim 14, wherein: the devices are disposed in a spatially fixed arrangement relative to one another, and the array includes pipette tips which are borne together in the holding unit. 18. The device according to claim 1, comprising: an intermediate piece, provided the holding unit, to which the fluid-tight flexible tube and, a replaceable pipette tip are attachable. 19. A pipette array comprising an array of devices according to claim 18, wherein: the devices are disposed in a spatially fixed arrangement relative to one another, and the array includes pipette tips which are borne together in the holding unit. 20. A pipette array comprising an array of devices according to claim 1, wherein: the devices are disposed in a spatially fixed arrangement relative to one another, and the array includes pipette tips which are borne together in the holding unit. 21. A pipette array comprising an array of devices according to claim 20, wherein: the devices are disposed in a spatially fixed arrangement relative to one another, and the array includes pipette tips which are borne together in the holding unit. 22. The device according to claim 1, wherein: the pipette tip is one-piece and is connected directly to the flexible tube. 23. The device according to claim 1, wherein: an intermediate piece, provided the holding unit, to which the fluid-tight flexible tube and, a replaceable pipette tip are attachable.