METHOD AND DEVICE FOR TRANSFERRING PART OF A LIQUID HOUSED IN A CONTAINER

摘要

A device for transferring a portion of a liquid contained in a container, the device having a hollow needle for penetrating through the plug of the container; a pressure chamber for pressurizing a fluid, the chamber having the needle passing therethrough and being provided with a septum; and an approach system for causing the hollow needle and the septum to approach each other so as to increase the pressure of the fluid as a result of the approach.

主权项

1. A method of transferring a portion of a liquid contained in a container (3) provided with a plug (4), the method being characterized in that it consists in:
using a hollow needle (5) passing through the plug (4) of the container to put the inside of the container into communication with a sealingly chamber (8) for pressurizing a fluid, which chamber is provided with a septum (20) that is penetrable by needle and presents a volume that is variable as a result of relative movement between the hollow needle (5) and the septum (20) that is penetrable by needle; causing the hollow needle (5) and the septum (20) that is penetrable by needle to approach each other over a determined stroke so as to increase the pressure inside the chamber (8) and consequently inside the container by transferring the fluid via the hollow needle and reaching a transfer pressure immediately prior to the hollow needle passing through the septum (20); and continuing to cause the hollow needle (5) and the septum (20) that is penetrable by needle to approach each other so that the hollow needle passes through the septum so as to open out into a liquid distribution chamber (24) at a pressure that is lower than the transfer pressure so that under the effect of this pressure difference a portion of the liquid is transferred through the hollow needle (5) from the container (3) into said distribution chamber (24).