Abstract:
Dispositif d'amplification comprenant un compartiment de collecte relié à un compartiment de réaction par au moins un élément de liaison comprenant un mois un canal ou cavité, destiné à dupliquer en grand nombre une séquence d'ADN ou d'ARN d'un échantillon mélangé à une solution, dont une partie est transférée du compartiment de collecte vers le compartiment de réaction en actionnant l'élément de liaison de manière externe.
Abstract:
A volumetric pump comprises at least one piston (1) inside a cylindrical housing (2) and means to cause a relative to-and-fro linear movement between the cylindrical housing (2) and the piston (1) in order to produce a stroke of the volumetric pump. This pump further comprises a bi-directional angular rotatable disc (4) acting as a valve which connects alternately at least one inlet port and at least one outlet port (5, 5') to a least one pump chamber (6, 6') located inside the housing (2), and a driving mechanism arranged to dissociate at least partially the bi-directional angular movement of the rotatable disc (4) with the to-and-fro linear movement of the housing (2). This driving mechanism is arranged such that the rotatable disc (4) reaches an angular position at which it opens and/or closes the inlet and/or outlet ports (5, 5') when there is no relative to-and-fro linear movement between the cylindrical housing (2) and the piston (1).
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 rotable element in order to open and close alternately the inlet and outlet ports.
Abstract:
L'invention se rapporte à un dispositif interne de colonne de direction de véhicule destiné à faciliter la conduite dans les courbes en modifiant l'alignement des roues avant et arrière du véhicule, par un décalage transversal/latéral, en utilisant un roulement excentrique, maintenant une partie de l'axe de colonne de direction.
Abstract:
L'invention se rapporte à un dispositif thermorégulé destiné à modifier la consistance d'une composition de départ comportant une préparation au moins partiellement mélangée à un liquide. Le dispositif est configuré pour recevoir à cet effet un réservoir (3; 203; 303; 403; 503; 603; 703) contenant la composition de départ, et possédant deux faces opposées dont au moins une face comprend une partie souple, le dispositif comportant un élément thermorégulé (2; 202; 302; 402) présentant une surface de contact prédéfinie agencée pour venir en contact avec l'une des faces opposées du réservoir (3; 203; 303; 403; 503), ainsi que des moyens de brassage pour malaxer la composition du réservoir (3; 203; 303; 403). Ces moyens de brassage comportent un mélangeur (10; 210; 310; 410) ainsi que des moyens d'entraînement (30; 230; 330) agencés pour amener le mélangeur (10; 210; 310; 410) en appui sur ladite partie souple du réservoir (3; 203; 303; 403; 503), lorsque celui-ci est disposé sur l'élément thermorégulé (2; 202; 302; 402) du dispositif, de sorte à créer une zone de compression locale (8; 208; 308) à l'intérieur du réservoir (3; 203; 303; 403; 503). Les moyens d'entraînement (30; 230; 330) sont en outre agencés pour ensuite déplacer le mélangeur (10; 210; 310; 410) par rapport à la partie souple du réservoir (3; 203; 303; 403; 503) afin de déplacer ladite zone de compression locale (8; 208; 308) à l'intérieur du réservoir (3; 203; 303; 403; 503) de manière à malaxer la composition du réservoir (3; 203; 303; 403; 503) au cours de l'opération de malaxage.
Abstract:
A fluid pumping device comprising a pump housing (1; 101; 201; 301; 701; 901) containing a piston chamber (11; 101 '; 201 '; 310a, 301b; 701 '; 901 ' ) and a piston (2; 102; 202; 302, 302 '; 702; 902, 902 " ) moving back and forth inside the piston chamber, an inlet port (10i; 110i; 210i; 310i; 710i; 921) and an outlet port (10o; 110?; 210o; 310o; 710o; 920) allowing a fluid to be sucked into the piston chamber during an instroke of the piston and expelled from the piston chamber during an outstroke. The device further comprises a valve - switching element (9; 109; 201; 309; 701; 909 ) movably mounted against a valve base member (7; 107; 207; 307; 707; 907), which comprises a piston chamber aperture (12p; 112p; 212p; 312p, 312p 1; 712p; 912p) connected to the piston chamber and an inlet aperture (12i; 112i; 212i;312i;712i;912i) and an outlet aperture (12o; 112o; 212o; 312o; 712o; 912o) connected respectively to the inlet and outlet ports of the fluid pumping device. The element comprises a groove (14; 114; 214; 314, 314 '; 714; 914) or other recess (514) moving against the valve base member such that, a first communication allows leakage between the inlet aperture and the piston chamber aperture so that fluid is sucked from the inlet port, through the groove or recess, into the piston chamber during part of the piston instroke, while a second communication allows leakage between the piston chamber aperture and the outlet aperture expelling fluid out of the piston chamber, through the groove or recess and the outlet port during part of the piston outstroke.
Abstract:
There is described a fluid pumping device comprising a pump housing (1; 101; 201; 301; 701; 901 ) containing at least one piston chamber (11; 101 '; 201 '; 310a, 301 b; 701 '; 901') and at least one piston (2; 102; 202; 302, 302'; 702; 902, 902") arranged to move back and forth inside the piston chamber, at least one inlet port (10i; 110i; 210i; 310i; 710i; 921 ) and at least one outlet port (10o; 110o; 210o; 310o; 710o; 920) arranged so that a fluid can be sucked through the inlet port into the piston chamber during an instroke of the piston and expelled from the piston chamber through the outlet port during an outstroke of the piston. The fluid pumping device further comprises a valve-switching element (9; 109; 201; 309; 701; 909) that is movably mounted against a valve base member (7; 107; 207; 307; 707; 907), said valve base member comprising at least one piston chamber aperture (12p; 112p; 212p; 312p, 312p'; 712p; 912p) connected to the piston chamber and at least one inlet aperture (12i; 112i; 212i; 312i; 712i; 912i) and at least one outlet aperture (12o; 112o; 212o; 312o; 712o; 912o) connected respectively to the inlet and outlet ports of the fluid pumping device. The valve-switching element comprises at least one groove (14; 114; 214; 314, 314'; 714; 914) or other recess (514) arranged to move against the valve base member such that, said groove or recess creates a first communication allowing leakage between the inlet aperture and the piston chamber aperture so that fluid is sucked from the inlet port, through the groove or recess, into the piston chamber during at least a part of the piston instroke, while said groove or recess creates a second communication allowing leakage between the piston chamber aperture and the outlet aperture so that fluid is expelled out of the piston chamber, through the groove or recess and the outlet port during at least a part of the piston outstroke.
Abstract:
A volumetric pump comprises at least one piston (1) inside a cylindrical housing (2) and means to cause a relative to-and-fro linear movement between the cylindrical housing (2) and the piston (1) in order to produce a stroke of the volumetric pump. This pump further comprises a bi-directional angular rotatable disc (4) acting as a valve which connects alternately at least one inlet port and at least one outlet port (5, 5') to a least one pump chamber (6, 6') located inside the housing (2), and a driving mechanism arranged to dissociate at least partially the bi-directional angular movement of the rotatable disc (4) with the to-and-fro linear movement of the housing (2). This driving mechanism is arranged such that the rotatable disc (4) reaches an angular position at which it opens and/or closes the inlet and/or outlet ports (5, 5') when there is no relative to-and-fro linear movement between the cylindrical housing (2) and the piston (1).
Abstract:
A volumetric pump (1) comprising at least one piston (2) in a hollow cylinder (3), said pump (1) having at least one inlet port (10) through which a liquid (15) can be sucked into a pump chamber (3) during an instroke of said piston (2), and at least one outlet port (11) through which the liquid (15) can be expelled during an outstroke of the piston (2). Said piston (2) or the hollow cylinder (3) of the volumetric pump (1) can be actuated directly or indirectly by at least one rotor (5). This rotor (5) transmits, on the one hand a bi-directional linear movement to the piston (2) or to the cylinder (3) causing said piston (2) to slide back and forth inside said cylinder (3) or following the axis of said piston (2), and on the other hand, a bi-directional angular movement either to the piston (2) or to a disc (24) in order to open and close alternately the inlet and outlet ports (10, 11).