摘要:
An eccentric bearing for an electrohydraulic piston pump assembly of a vehicle brake system includes a shaft which can be driven in rotation about its axis, a bearing ring which is eccentric relative to the shaft, and rolling bodies arranged between the bearing ring and the shaft. The rolling bodies have different diameters corresponding to a varying width of a gap between the bearing ring and the shaft. When the shaft is driven in rotation, an eccentricity of the bearing ring circulates around the shaft at half of the rotational speed of the shaft and drives pump pistons. The pump pistons bear at the outside against the bearing ring so as to perform a reciprocating movement.
摘要:
A method for emptying a blood tubing set of a blood treatment device that includes an extracorporeal blood circuit with a membrane filter includes supplying air or gas to the blood tubing set to displace liquid therein. The blood tubing set includes arterial and venous patient blood tubes in communication with a first chamber of the membrane filter. The device also includes a substituate line which opens into the arterial blood tube and/or into the venous blood tube, and a substituate pump. To empty the blood tubing set, the arterial blood tube and the venous blood tube are connected to one another to provide a circuit that includes the membrane filter, the arterial blood tube, and the venous blood tube. The substituate line is disconnected, and the air or gas is pumped into the blood tubing set so as to displace liquid into a second chamber of the membrane filter.
摘要:
A disposable cassette, preferably for use in analysis technology, has at least one first part in which channel structures are cut out in the surface and a second part covering the first part in a sealing manner, with engagement regions for actuator elements being provided at pre-determined points. The first part and/or the second part are constructed of a rigid material and have a flexible material region associated therewith, with the rigid material and the flexible material region being manufactured in one piece using two-component injection molding technology.
摘要:
A disposable cassette, preferably for use in analysis technology, has at least one first part in which channel structures are cut out in the surface and a second part covering the first part in a sealing manner, with engagement regions for actuator elements being provided at pre-determined points. The first part and/or the second part are constructed of a rigid material and have a flexible material region associated therewith, with the rigid material and the flexible material region being manufactured in one piece using two-component injection molding technology.
摘要:
The invention relates to a disposable cassette, preferably for use in analysis technology, consisting of at least one first part in which channel structures are cut out in the surface and of a second part covering it in a sealing manner, with engagement regions for actuator elements being provided at pre-determined points. In accordance with the invention, the first part and/or the second part are made rigidly for the greater part; with them, however, having flexibly made regions, with the rigid and flexible regions being manufactured in one piece using two-component injection molding technology.
摘要:
An eccentric bearing for an electrohydraulic piston-pump assembly of a vehicle brake system includes a shaft configured to be driven rotationally about its axis, a bearing ring eccentric relative to the shaft, and, in a gap between the bearing ring and shaft, rolling bodies with different diameters according to a differing width of the gap. When the shaft is rotationally driven, an eccentricity of the bearing ring circulates the shaft more slowly than the rotational speed of the shaft and drives a reciprocating movement of pump pistons which bear against the bearing ring. To ensure that the rolling bodies roll on and circulate the shaft, a radial elasticity loads the rolling bodies with prestress against the shaft and bearing ring. The prestress is caused by an undersize of the bearing ring or by an elastic ring on the shaft, on at least one rolling body or in the bearing ring.
摘要:
A spring element includes a disc-shaped basic body, in which at least one spring bridge is inserted. The basic body has at least one dynamic throttle point to throttle a fluid flow. The basic body has a resilient configuration in a region of the at least one throttle point. Accordingly, an opening cross section of the at least one throttle point is configured to be set variably depending on a pressure difference.
摘要:
An apparatus for treating a medical liquid is provided which includes a treatment machine having a coupling surface, with a cassette made of a hard part having liquid-conducting passages which are covered by a flexible film being able to be coupled to the coupling surface of the treatment machine. A corresponding medical cassette is also provided. An air-free coupling of the flexible film of the cassette to the treatment machine is ensured in that air can be sucked out areally along a plane between the flexible film and the coupling surface during the coupling process and/or with a coupled cassette. A method for coupling the cassette and a method for checking the leaktightness of the cassette via the vacuum control of the air suction is also provided.
摘要:
A method is provided for rinsing and/or filling a blood treatment device, in particular for priming such a device. The blood treatment device includes at least one membrane filter, in particular a hollow fiber membrane filter, at least one first partial circuit, and at least one second partial circuit, with the first and second partial circuit being separated by the membrane filter in a semipermeable manner. The first partial circuit is first filled with a fluid with a uniform and/or a pulsatile first volumetric flow rate that does not exceed a specified threshold value. At this value the fluid has not yet completely wetted and/or soaked the membrane, and/or the second partial circuit is at least temporarily open towards the atmosphere, and air is displaced from the first into the second partial circuit via the membrane filter, and/or during filling no negative pressure is applied to the first partial circuit.
摘要:
A pump assembly as a feedback pump of a hydraulic, slip-controlled vehicle brake system having a piston pump and an electric motor for driving it is disclosed. The electric motor is embodied as an external rotor and the stator is mounted on a printed circuit board which has an electronic system for commutating the electric motor and/or for performing slip control of the vehicle brake system.