초록 ▼

A device for capturing a predetermined volume of a predefined portion (e.g. first void) of a liquid flow, comprises an inlet, an outlet, and a guide with an element displaceable in a first position for capturing the first liquid portion in a reservoir, and in a second position for blocking access to

A device for capturing a predetermined volume of a predefined portion (e.g. first void) of a liquid flow, comprises an inlet, an outlet, and a guide with an element displaceable in a first position for capturing the first liquid portion in a reservoir, and in a second position for blocking access to the reservoir, and for passing the liquid to the outlet. The displaceable element moves in transverse direction to the liquid flow, and has lifting means. The element may be substantially flat, or tubular with an elliptical cross section. A kit of parts and a method of assembly are also claimed.

대표청구항 ▼

1. A device for capturing a first portion of a liquid flow, the device comprising: an inlet for receiving the liquid flow;an outlet for draining an excess of the liquid flow;a guide connected between the inlet and the outlet, and adapted for directing the first portion of the liquid flow towards a r

1. A device for capturing a first portion of a liquid flow, the device comprising: an inlet for receiving the liquid flow;an outlet for draining an excess of the liquid flow;a guide connected between the inlet and the outlet, and adapted for directing the first portion of the liquid flow towards a reservoir connected to the guide and for directing a subsequent portion of the liquid flow to the outlet;wherein the guide comprises a displaceable element adapted for creating passage of liquid between the inlet and the reservoir while blocking passage of liquid between the inlet and the outlet when the displaceable element is in a first position, and for blocking passage of liquid between the inlet and the reservoir while creating passage of liquid between the inlet and the outlet when the displaceable element is in a second position, the displaceable element comprising lifting means for displacing the displaceable element from the first to the second position when the first portion of the liquid flow is captured in the reservoir. 2. The device according to claim 1, wherein the displaceable element is an elongated element movable in a direction substantially transverse to the direction from the inlet to the outlet. 3. The device according to claim 1, wherein the lifting means comprises a predefined volume of a material having a mass density lower than that of the liquid to be captured. 4. The device according to claim 1, wherein the lifting means comprise at least one air chamber. 5. The device according to claim 1, wherein: the displaceable element has a first segment with a first cross section, and a second segment with a second cross section smaller than the first cross section, and a first channel extending from a first opening in the first segment to a second opening in the second segment, such that when in the first position the first opening is in fluid connection with the inlet for receiving the first portion of the liquid flow so as to direct the first portion through the first channel towards the reservoir, and such that when in the second position the first opening is blocked from the inlet while the smaller cross section of the second segment allows passage of the second fluid portion from the inlet to the outlet; andthe guide has an internal edge complementary to the second cross section. 6. The device according to claim 5, wherein the displaceable element further comprises a second channel arranged for allowing air to escape from the reservoir into the outlet during capturing of at least a fraction of the first portion of the liquid flow when the displaceable element is in the first position, and arranged such that passage of liquid from the outlet to the reservoir is blocked when the displaceable element is in the second position. 7. The device according to claim 1, wherein: the guide has a first opening arranged between the inlet and the reservoir, and the displaceable element has a protrusion adapted for blocking the first opening when in the second position while leaving the first opening open when in the first position for receiving the first fluid portion;the displaceable element has an upper segment with a closed wall section and a lower segment with a narrowing or a second opening arranged such that the closed wall section blocks passage of liquid from the inlet to the outlet when in the first position for directing the first fluid portion towards the reservoir, while allowing passage of the second fluid portion from the inlet to the outlet when in the second position. 8. The device according to claim 1, further comprising a second guide and a second movable element and a second reservoir for capturing a second portion of the liquid stream. 9. The device according to claim 1, wherein the inlet comprises a funnel, wherein the funnel is made of a material which can be reversibly folded and unfolded or reversibly snap-compressed and decompressed. 10. The device according to claim 1, wherein the device is at least partly made of biologically degradable material or of polymers. 11. The device according to claim 1, furthermore comprising readout means for reading out a result of a test performed on liquid captured in the reservoir. 12. A kit of parts, comprising: a tubular inlet;a tubular outlet;a guide having at least three openings, a first opening connectable to the tubular inlet, a second opening connectable to the tubular outlet, a third opening connectable to a reservoir;an element displaceable in the guide, and adapted for creating passage for liquid between the inlet and the reservoir while blocking passage of liquid between the inlet and the outlet when the displaceable element is in a first position, and for blocking passage of liquid between the inlet and the reservoir while creating passage for liquid between the inlet and the outlet in a second position, the displaceable element comprising lifting means. 13. The kit of parts according to claim 12, wherein two or more parts selected from the tubular inlet and the tubular outlet and the guide are combined in a monolithic part. 14. The kit of parts according to claim 12, further comprising a reservoir. 15. The kit of parts according to claim 14, wherein the reservoir comprises a DNA stabilization agent, or a preservation liquid. 16. The kit of parts according to claim 12, further comprising a funnel and a clip for mounting the funnel to the inlet and/or for holding the funnel in an unfolded or decompressed state and/or for allowing the assembled parts to stand in an upright position on a substantially horizontal surface. 17. Method for assembling a device for capturing a first portion of a liquid flow, the method comprising: providing an inlet for receiving the liquid flow; an outlet for draining an excess of the liquid flow; and a guide adapted for directing the first portion of the liquid flow towards a reservoir connected to the guide and for directing a subsequent portion of the liquid flow to an outlet; wherein the guide comprises a displaceable element adapted for creating passage of liquid between the inlet and the reservoir while blocking passage of liquid between the inlet and the outlet when the displaceable element is in a first position, and for blocking passage of liquid between the inlet and the reservoir while creating passage of liquid between the inlet and the outlet when the displaceable element is in a second position, the displaceable element comprising lifting means for displacing the displaceable element from the first to the second position when the first portion of the liquid flow is captured in the reservoir;if the inlet is separate from the guide, connecting the inlet to the guide;if the outlet is separate from the guide, connecting the outlet to the guide;connecting the reservoir to the guide;inserting the displaceable element in the guide, the displaceable element being adapted for creating passage of liquid between the inlet and the reservoir while blocking passage of liquid between the inlet and the outlet when the displaceable element is in a first position in the guide, and for blocking passage of liquid between the inlet and the reservoir while creating passage of liquid between the inlet and the outlet when the displaceable element is in a second position in the guide. 18. The method according to claim 17, further comprising: connecting a cap to the guide. 19. The method according to claim 17, further comprising: connecting a funnel to the inlet. 20. The device according to claim 5 wherein the cross-section of the first segment is circular, and the cross section of the second segment is elliptical, and wherein the guide has a corresponding elliptical edge.