Micro-fluidic system

摘要

A micro-fluidic system comprising a micro-fluidic channel, which has a wall provided with a hole, within which a closing portion of a closing element extends; when the closing portion is arranged within the micro-fluidic channel, the passage of the liquid along the channel is interrupted; by deforming the closing element by suction the closing portion may be lifted and therefore allow the passage of liquid along the micro-fluidic channel.

主权项

1. A micro-fluidic system comprising:
at least one micro-fluidic channel wherein the microfluidic channel is substantially linear and comprises a first inner surface and an opposed second inner surface, a first segment, at least one second segment collinear with the first segment, and at least one wall, wherein the at least one wall is provided with at least one hole arranged between the first and second segments; and at least one valve, which is arranged along the at least one micro-fluidic channel in the area of the hole, wherein the at least one valve comprises an actuator and a closing element comprising at least one substantially elastic material, wherein: the actuator is adapted to displace the closing element between an open position, in which the first and second segments communicate with one another, and a locked position, in which the closing element isolates the first and second segments from one another; the first and second inner surfaces each extends downstream and upstream of the at least one valve so as to at least partially define the microfluidic channel in the area of the first and second segments; the portion of the first inner surface in the area of the first segment is substantially coplanar to the portion of the first inner surface in the area of the second segment, the portion of the second inner surface in the area of the first segment is substantially coplanar to the portion of the second inner surface in the area of the second segment; the closing element comprises a membrane portion and a closing portion, which projects from the membrane portion so as to at least partially engage said hole and isolate the first and second segments; the closing element is in the locked position without any force exerted on the closing element; and the actuator is adapted to displace the closing element from the locked position to the open position.