Abstract: The present invention relates to a drug preparation and drug delivery device comprising: a drug preparation unit comprising at least two receptacles capable of containing constituents to be mixed, at least one of the receptacles being movable inside the drug preparation unit, a drug administration means, such as an injection or spray means, a fluid circuit capable of fluidically connecting the at least two receptacles and the administration means, the connecting of the fluid circuit with the at least two receptacles being made using at least two piercing means when said at least two receptacles move from an initial position to a contact position with said at least two corresponding piercing means, an electromechanical assembly for fluidically driving the constituents within the fluid circuit, characterised in that said drug preparation unit comprises a release mechanism comprising a compressed drive spring which, when it is released, is capable of generating a movement along an axis A1 of at least one of the

Abstract: A drill pipe having a tubular body through which is provided a main bore, a side port provided in an exterior surface of the body, a side bore extending through the body from the main bore to the side port, and a valve member which is movable between a closed position in which fluid flow through the side bore is substantially prevented and an open position in which fluid flow through the side bore is permitted, wherein the movement of the valve member between the closed position and the open position comprises translational movement, and the valve member is located at least predominantly within the side bore.

Abstract: A drill pipe having a tubular body through which is provided a main bore, a side port provided in an exterior surface of the body, a side bore extending through the body from the main bore to the side port, and a valve member which is movable between a closed position in which fluid flow through the side bore is substantially prevented and an open position in which fluid flow through the side bore is permitted, wherein the movement of the valve member between the closed position and the open position comprises translational movement, and the valve member is located at least predominantly within the side bore.