Swissinnov Product Sarl

Acist Medical Systems, Inc.

Thierry Navarro

Florent Junod

Khader Mohiuddin

Jacque Lagarrigue

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.

Internal device having an excentric bearing for a steering column

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.

Precision, constant-flow reciprocating pump

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.

Pulsation-free positive displacement rotary pump

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.

Volumetric pump comprising a driving mechanism

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.

Volumetric pump

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

Growing community of inventors

Gland, Switzerland

Thierry Navarro