Abstract: An assisted manual injection device for injecting a composition contained in a container, in which the container is provided with a needle at its distal end, and contains a piston, the injection device having a body comprising at least one gripping zone by which the body can be held in a user's hand, a holding element for holding the container configured to receive and hold the container in a stationary manner relative to the body, an electromechanical system comprising a piston rod capable of moving in translation in the container relative to the body of the device to move the piston, an actuation system for actuating the piston rod, a processor capable of communicating with the actuation system, wherein the device comprises at least one force sensor positioned on the body at a gripping zone.

Abstract: A reciprocating and rotary subassembly for positive displacement pumping of a fluid includes a hollow body provided with through ducts, a piston received in the cavity, with which it co-operates to define a working chamber, the piston having a recess in fluid-flow communication with the working chamber, and being suitable for being moved in reciprocating and rotary manner to place or not to place the recess facing a duct and to cause the volume of the working chamber to vary, and a sleeve provided with through orifices, interposed between the piston and the body, and suitable for taking up different successive fluid-flow configurations in each of which each duct is selectively closed or open. A reciprocating and rotary pumping device includes such a reciprocating and rotary subassembly, drive means, and mechanical coupling means.

Abstract: A reciprocating and rotary subassembly for positive displacement pumping of a fluid includes a hollow body provided with through ducts, a piston received in the cavity, with which it co-operates to define a working chamber, the piston having a recess in fluid-flow communication with the working chamber, and being suitable for being moved in reciprocating and rotary manner to place or not to place the recess facing a duct and to cause the volume of the working chamber to vary, and a sleeve provided with through orifices, interposed between the piston and the body, and suitable for taking up different successive fluid-flow configurations in each of which each duct is selectively closed or open. A reciprocating and rotary pumping device includes such a reciprocating and rotary subassembly, drive means, and mechanical coupling means.