摘要:
A method for determining a pressure of a medical fluid in a fluid line by using at least one centrifugal pump includes detecting the pressure upstream of the centrifugal pump while considering an information about a pressure downstream of the centrifugal pump, or detecting the pressure downstream of the centrifugal pump while considering an information about a pressure upstream of the centrifugal pump. Thereby, at least one information about the volume flow in the fluid line and/or at least one information about a rotation speed of the centrifugal pump are considered, respectively. The invention also relates to a method for determining a volume flow, an arithmetic unit, a treatment apparatus, a digital storage means, a computer program product and a computer program.
摘要:
A method for determining a pressure of a medical fluid in a fluid line by using at least one centrifugal pump includes detecting the pressure upstream of the centrifugal pump while considering an information about a pressure downstream of the centrifugal pump, or detecting the pressure downstream of the centrifugal pump while considering an information about a pressure upstream of the centrifugal pump. Thereby, at least one information about the volume flow in the fluid line and/or at least one information about a rotation speed of the centrifugal pump are considered, respectively. The invention also relates to a method for determining a volume flow, an arithmetic unit, a treatment apparatus, a digital storage means, a computer program product and a computer program.
摘要:
A medical functional device includes at least one first fluid system for receiving at least one medical fluid, at least one first conveying device for conveying the medical fluid, at least one second fluid system for receiving at least one operating fluid, and at least one second conveying device for operating the at least first conveying device, in which the first conveying device is arranged such as to be actuated by means of the operating fluid. A treatment apparatus and a method are also described.
摘要:
A medical functional device includes at least one first fluid system for receiving at least one medical fluid, at least one first conveying device for conveying the medical fluid, at least one second fluid system for receiving at least one operating fluid, and at least one second conveying device for operating the at least first conveying device, in which the first conveying device is arranged such as to be actuated by means of the operating fluid. A treatment apparatus and a method are also described.
摘要:
The present invention relates to a blood treatment device with at least one extra-corporeal blood circuit with a filter element and with at least one centrifugal pump means, wherein furthermore a monitoring means is provided, by means of which the flow resistance of the extracorporeal circuit can be determined, wherein the flow resistance can at least partly be determined with reference to the flow in at least one portion of the extracorporeal blood circuit and the speed of the centrifugal pump means. Furthermore, the present invention relates to a monitoring means for a blood treatment device and to a method for operating a blood treatment device.
摘要:
The housing of the blood treatment unit according to the invention holds both a blood pump and a semi-permeable membrane. The blood pump is an impeller pump. The impeller of the impeller pump is surrounded by a partition which divides the housing into two chambers. The semi-permeable membrane forms at least a part of the partition. It is therefore possible for an exchange of matter to take place between the blood which flows through the first chamber of the housing and the dialysis fluid which flows through the second chamber of the housing. The blood treatment unit is intended for an extra-corporeal blood treatment apparatus and has a particularly compact construction.
摘要:
The present invention relates to an apparatus for the regulation of at least one filtration value in a machine for the treatment of a medical fluid, in particular in a blood treatment machine, having at least one centrifugal pumping means, to a hemodialysis machine and to a method and to a use therefor.
摘要:
The present invention relates to an apparatus for the regulation of at least one filtration value in a machine for the treatment of a medical fluid, in particular in a blood treatment machine, having at least one centrifugal pumping means, to a hemodialysis machine and to a method and to a use therefor.
摘要:
An arrangement for heating a medical fluid includes at least one electrically operated first heating device including at least one first warm section heating during operation of the first heating device and at least one first cold section cooling during operation of the first heating device; a first area for receiving the medical fluid to be heated, in which the first area is in heat exchange relation with the first warm section of the first heating device; and a second area that is in heat exchange relation with the first cold section of the first heating device. A medical functional device, a medical treatment apparatus as well as methods for setting and/or maintaining the temperature of a medical fluid are also described.
摘要:
A device and method for monitoring an access to a patient, an extracorporeal blood circuit and/or a dialysing fluid system includes a centrifugal pump for conveying blood or dialysing fluid instead of an occluding pump. Centrifugal pumps bring about a large change in flow rate by even a small change in pressure difference across the pump. The device includes a measuring unit for measuring the flow rate of blood or dialysing fluid conveyed by the centrifugal pump, and a control and computing unit configured to determine an incorrect vascular access or malfunction if a change in measured flow rate Q is more than a predetermined amount. For example, a small drop in pressure in the venous blood line leads to a marked increase in the flow rate of the centrifugal pump, which is used as a basis for the detection of an incorrect vascular access.