Abstract:
A fuel-cell powered medical fluid processing machine or dialysis machine is disclosed. The machine is intended for remote or rural areas where standard household or utility power is not available or is subject to interruption. The fuel cell is powered by hydrogen or other source of protons, or may instead be powered by methanol or ethanol, such as a direct methanol fuel cell. The fuel cell may be operated directly, as in powering a portable, wearable dialysis device, or may be operated indirectly, to generate and store power in an electric power storage device of the medical fluid or dialysis device. The medical fluid processing machine or dialysis machine may include circuitry allowing for use by household or utility power while also including a fuel cell for use when other power is not available. A catalytic heater may be used to warm the dialysis fluid.
Abstract:
A dialysis system instrument includes a dialysis instrument (10), a disposable pumping and valving cassette apparatus (30) operable with pumping and valving actuators of the dialysis instrument, the disposable cassette (50) including an electronic cell (100c) and electronics associated with the electronic cell, the electronics configured to determine an electrical property of a solution flowing through the electronic cell of the disposable apparatus.
Abstract:
A fuel-cell powered medical fluid processing machine or dialysis machine is disclosed. The machine is intended for remote or rural areas where standard household or utility power is not available or is subject to interruption. The fuel cell is powered by hydrogen or other source of protons, or may instead be powered by methanol or ethanol, such as a direct methanol fuel cell. The fuel cell may be operated directly, as in powering a portable, wearable dialysis device, or may be operated indirectly, to generate and store power in an electric power storage device of the medical fluid or dialysis device. The medical fluid processing machine or dialysis machine may include circuitry allowing for use by household or utility power while also including a fuel cell for use when other power is not available. A catalytic heater may be used to warm the dialysis fluid.
Abstract:
A dialysate testing method in one embodiment includes placing electrical contacts in a dialysate flow path, measuring an electrical property of the dialysate as it flows through the flow path and past the contacts, and determining whether the dialysate has been mixed properly from the detected electrical property. A dialysate testing method in another embodiment includes flowing dialysate past a pair of electrical contacts, calculating a conductivity of the dialysate using an algorithm that takes into account a geometry of the contacts, and using the calculated conductivity to determine if the dialysate has been removed properly.
Abstract:
A dialysate testing method in one embodiment includes placing electrical contacts in a dialysate flow path, measuring an electrical property of the dialysate as it flows through the flow path and past the contacts, and determining whether the dialysate has been mixed properly from the detected electrical property. A dialysate testing method in another embodiment includes flowing dialysate past a pair of electrical contacts, calculating a conductivity of the dialysate using an algorithm that takes into account a geometry of the contacts, and using the calculated conductivity to determine if the dialysate has been removed properly.
Abstract:
A dialysis system instrument includes a dialysis instrument (10), a disposable pumping and valving cassette apparatus (30) operable with pumping and valving actuators of the dialysis instrument, the disposable cassette (50) including an electronic cell (100c) and electronics associated with the electronic cell, the electronics configured to determine an electrical property of a solution flowing through the electronic cell of the disposable apparatus.
Abstract:
A dialysis fluid heating system includes a plurality of conductive tubes; first and second end caps located at first and second ends of the tubes, respectively, the first end cap including a dialysis fluid inlet and a dialysis fluid outlet, the end caps and the tubes configured such that dialysis fluid can flow from the fluid inlet of the first end cap, through at least one first tube to the second end cap, and through at least one second tube back to the first end cap; a conductive wire wound around an outside of the conductive tubes; and electronics configured to supply power to the conductive wire, the wire forming a primary coil of a transformer, the tubes forming a secondary coil of the transformer.
Abstract:
Un sistema de calentamiento de fluido de di?lisis incluye una pluralidad de tubos conductores; primeras y segundas tapas extremas localizadas en primeros y segundos extremos de los tubos, respectivamente, la primera tapa extrema incluyendo una entrada de fluido de di?lisis y una salida de fluido de di?lisis, las tapas extremas y los tubos configurados de manera que el fluido de di?lisis pueda fluir desde la entrada de fluido de la primera tapa extrema, a trav?s de por lo menos un primer tubo hacia la segunda tapa extrema, y a trav?s de por lo menos un segundo tubo de regreso a la primera tapa extrema; un cable conductor devanado alrededor de la parte externa de los tubos conductores; y electr?nica configurada para suministrar energ?a a l cable conductor, el cable formando una bobina primaria de un transformador, los tubos formando una bobina secundaria del transformador.
Abstract:
Se describe una máquina de procesamiento de fluido médico o máquina de diálisis energizada por celda de combustible. La máquina está proyectada para áreas remotas o rurales en donde no está disponible energía doméstica o de utilidad estándar o está sometida a interrupción. La celda de combustible es energizada por hidrógeno u otra fuente de protones, o más bien puede ser energizada por metanol o etanol, tal como una celda de combustible de metanol directo. La celda de combustible puede operarse directamente, como en la energización de un dispositivo de diálisis que se puede llevar puesta, portátil, o puede operarse en forma indirecta, para generar y almacenar energía en un dispositivo de almacenamiento de energía eléctrica del dispositivo de diálisis o fluido médico. La máquina de procesamiento de fluido médico o máquina de diálisis puede incluir circuitos que permiten el uso mediante energía doméstica o de utilidad, y también incluyen una celda de combustible para utilizarse cuando no está disponible otra energía. Se puede utilizar un calentador catalítico para calentar el fluido de diálisis.