Abstract: Amplification device comprising a collection compartment connected to a reaction compartment by at least one linking element comprising at least one channel or cavity, for the duplication, in large numbers, of a DNA or RNA sequence of a sample mixed with a solution, part of which is transferred from the collection compartment to the reaction compartment by means of the external actuation of the linking clement

Abstract: A pump having two pistons which are driven by a cam belonging to an external rotor and which are inserted into two cylinder blocks mounted parallel to each other in such a way as to form two opposite, parallel, eccentric pump chambers The pump chambers have at least one inlet port through which liquid is drawn into the pump chambers during the fill stroke of the pistons, and then expelled from the pump chambers during the discharge stroke of the pistons to at least one outlet port, the outflow rate of which is constant and even.

Abstract: The invention relates to an vehicle steering column internal device intended to facilitate driving in curves by modifying the alignment of the front and rear wheels of the vehicle, by a transverse/lateral shift, using an eccentric rolling bearing, holding a part of the steering column shaft.

Abstract: A pump having two pistons which are driven by a cam belonging to an external rotor and which are inserted into two cylinder blocks mounted parallel to each other in such a way as to form two opposite, parallel, eccentric pump chambers The pump chambers have at least one inlet port through which liquid is drawn into the pump chambers during the fill stroke of the pistons, and then expelled from the pump chambers during the discharge stroke of the pistons to at least one outlet port, the outflow rate of which is constant and even.

Abstract: A pump having two pistons placed in a rotor, situated in a stator forming two opposite parallel eccentric pumping chambers having at least one inlet port through which the fluid is drawn into at least one of the pumping chambers during the filling movement of at least one of the pistons and, subsequently, expelled from at least one of the pumping chambers, during the emptying movement of at least one of the pistons, to at least one outlet port, characterized by an inlet cavity in connection with the inlet port, an outlet cavity in connection with the outlet port and two port changeover transition zones situated between each side of the cavities.

Abstract: A pump having two pistons which are parallel and in opposition and are disposed in two, cylindrical, cavities in a pump body, including at least one inlet port and at least one outlet port connected to a rotational port-switching device which can move axially along its rotational axis and is held in abutment in the pump body by a restoring member, in the form of a spring.

Abstract: The invention relates to a thermoregulated device for modifying the consistency of a starting composition that comprises a preparation at least partially mixed with a liquid. For this purpose, the device is configured to accommodate a reservoir (3; 203; 303; 403; 503; 603; 703) containing the starting composition and possessing two opposing faces, at least one of which comprises a flexible section, the device comprising a thermoregulated element (2; 202; 302; 402) having a predefined contact surface arranged to come into contact with one of the opposing faces of the reservoir (3; 203; 303; 403; 503), as well as stirring means for mixing the composition in the reservoir (3; 203; 303; 403).

Abstract: The invention relates to a miniature portable pump with mechanical actuation, preferably without a motor, provided with a bowed piston for injecting fluid by manual dosing and/or continuously. The pump consists of a small number of parts with very low production cost, for injecting medication, preferably subcutaneously.

Abstract: A fluid delivery device for delivering small quantities of fluid such as insulin to a patient, including a disposable unit having a disposable housing that has one lower part and one upper part, which together form a shell that defines an internal partial toroidal arcuate cavity. The housing fits together with a drive unit. The housing contains an arcuate cylinder for containing fluid to be delivered, a piston movably mounted in the cylinder for driving out fluid to be delivered, an adhesive support for attaching the housing and a cannula that when the housing is attached to a patient is insertable in the patient's skin for delivering fluid. The drive unit is preferably removably mounted on a front of the housing opposite the adhesive support, the removable drive unit having a shape that when fitted complements the shape of the front face of the housing to form with the housing.

Abstract: A pump having two pistons placed in a rotor, situated in a stator forming two opposite parallel eccentric pumping chambers having at least one inlet port through which the fluid is drawn into at least one of the pumping chambers during the filling movement of at least one of the pistons and, subsequently, expelled from at least one of the pumping chambers, during the emptying movement of at least one of the pistons, to at least one outlet port, characterized by an inlet cavity in connection with the inlet port, an outlet cavity in connection with the outlet port and two port changeover transition zones situated between each side of the cavities.

Abstract: A volumetric pump comprises at least one piston inside a cylindrical housing and means to cause a relative to-and-fro linear movement between the cylindrical housing and the piston in order to produce a stroke of the volumetric pump. This pump further comprises a bi-directional angular rotatable disc acting as a valve which connects alternately at least one inlet port and at least one outlet port to a least one pump chamber located inside the housing, and a driving mechanism arranged to dissociate at least partially the bi-directional angular movement of the rotatable disc with the to-and-fro linear movement of the housing. This driving mechanism is arranged such that the rotatable disc reaches an angular position at which it opens and/or closes the inlet and/or outlet ports when there is no relative to-and-fro linear movement between the cylindrical housing and the piston.

Abstract: A fluid pumping device having a pump housing containing a piston chamber and a reciprocating piston, an inlet port and an outlet port allowing a fluid to enter the piston chamber during an instroke of the piston and be expelled during an outstroke. The device further having a valve switching element movably mounted against a valve base member, with a piston chamber aperture connected to the piston chamber and an inlet aperture and an outlet aperture connected respectively to the inlet and outlet ports of the fluid pumping device. The element has a grooves in the valve base member providing, a first communication between the inlet aperture and the piston chamber aperture so that fluid is sucked, into the piston chamber during part of the piston instroke, and a second communication aperture expelling fluid out of the piston chamber, through the outlet port during part of the piston outstroke.

Abstract: In one embodiment, a volumetric pump in a medical fluid delivery system comprises at least one piston in a hollow cylinder, the pump having at least one inlet port through which a medical fluid can be sucked into a pump chamber during an instroke of said piston, and at least one outlet port through which the medical fluid can be expelled during an outstroke of the piston. The piston or the hollow cylinder can be actuated directly or indirectly by a rotor. This rotor transmits on the one hand a bi-directional linear movement to the piston or to the cylinder and on the other hand, a bi-directional angular movement either to the piston or to another ratable element in order to open and close alternately the inlet and outlet ports.

Abstract: A volumetric pump (1) comprising a piston (2) and a cylindrical chamber (3), contains an inlet port (10) and an outlet port (11). The piston (2) is actuated by a rotor (5) bearing an eccentric shaft (6). The shaft (6), being connected to the piston (2), causes the piston to slide back and forth inside the cylinder chamber (3) while having a bidirectional angular movement. The instroke of the piston (2) sucks a fluid (15) from the inlet port (10) through a first channel (12) into the pump chamber (3), the fluid being propelled through a second channel (13) to the outlet port (11) during the outstroke of the piston (2). The inlet (10) and outlet port (11) are opened and closed alternatively by the bidirectional angular movement of the piston (2) which acts as a valve for the inlet and outlet ports (10, 11).

Abstract: A micropump comprises a valve system having one gasket (10) shaped to define three cavities (12, 12a, 12b) connected respectively to a piston chamber, an inlet port and an outlet port of the pump. A valve switching element (16) having at least one groove (17) is movably mounted on the gasket such that, during piston instrokes, said groove moves along a part of the gasket adjacent to the cavities connected respectively to the piston chamber and the inlet port of the pump, thereby creating a leakage between said cavities so that fluid is sucked into the piston chamber during a piston instroke. During piston outstrokes, said groove moves along a part of the gasket adjacent to the cavities connected respectively to the piston chamber and the outlet port of the pump, thereby creating a leakage between said cavities so that fluid is expelled out of the piston chamber through the outlet port during a piston outstroke.

Abstract: A volumetric pump (1) comprising a piston (2) and a cylindrical chamber (3), contains an inlet port (10) and an outlet port (11). The piston (2) is actuated by a rotor (5) bearing an eccentric shaft (6). The shaft (6), being connected to the piston (2), causes the piston to slide back and forth inside the cylinder chamber (3) while having a bidirectional angular movement. The instroke of the piston (2) sucks a fluid (15) from the inlet port (10) through a first channel (12) into the pump chamber (3), the fluid being propelled through a second channel (13) to the outlet port (11) during the outstroke of the piston (2). The inlet (10) and outlet port (11) are opened and closed alternatively by the bidirectional angular movement of the piston (2) which acts as a valve for the the inlet and outlet ports (10, 11).

Abstract: A volumetric pump comprises at least one piston inside a cylindrical housing and means to cause a relative to-and-fro linear movement between the cylindrical housing and the piston in order to produce a stroke of the volumetric pump. This pump further comprises a bi-directional angular rotatable disc acting as a valve which connects alternately at least one inlet port and at least one outlet port to a least one pump chamber located inside the housing, and a driving mechanism arranged to dissociate at least partially the bi-directional angular movement of the rotatable disc with the to-and-fro linear movement of the housing. This driving mechanism is arranged such that the rotatable disc reaches an angular position at which it opens and/or closes the inlet and/or outlet ports when there is no relative to-and-fro linear movement between the cylindrical housing and the piston.

Abstract: A volumetric pump (1) comprising a piston (2) and a cylindrical chamber (3), contains an inlet port (10) and an outlet port (11). Said piston (2) is actuated by a rotor (5) bearing an eccentric shaft (6). The shaft (6), being connected to the piston (2), causes said piston to slide back and forth inside the cylinder chamber (3) while having a bidirectional angular movement. The instroke of the piston (2) sucks a fluid (15) from the inlet port (10) through a first channel (12) into the pump chamber (3), said fluid being propelled through a second channel (13) to the outlet port (11) during the outstroke of the piston (2). The inlet (10) and outlet port (11) are opened and closed alternatively by the bidirectional angular movement of said piston (2) which acts as a valve for the said inlet and outlet ports (10, 11).

Abstract: In one embodiment, a volumetric pump in a medical fluid delivery system comprises at least one piston in a hollow cylinder, the pump having at least one inlet port through which a medical fluid can be sucked into a pump chamber during an instroke of said piston, and at least one outlet port through which the medical fluid can be expelled during an outstroke of the piston. The piston or the hollow cylinder can be actuated directly or indirectly by a rotor. This rotor transmits on the one hand a bi-directional linear movement to the piston or to the cylinder and on the other hand, a bi-directional angular movement either to the piston or to another ratable element in order to open and close alternately the inlet and outlet ports.