Abstract:
There is disclosed herein dialysis systems, including a variety of systems and methods that would make hemodialysis more efficient, easier, and/or more affordable. One aspect of the invention is generally directed to new fluid circuits for fluid flow. In one set of embodiments, a hemodialysis system may include a blood flow path and a dialysate flow path, where the dialysate flow path includes one or more of a balancing circuit, a mixing circuit, and/or a directing circuit. Preparation of dialysate by the preparation circuit, in some instances, may be decoupled from patient dialysis. In some cases, the circuits are defined, at least partially, within one or more cassettes, optionally interconnected with conduits, pumps, or the like. In one embodiment, the fluid circuit and/or the various fluid flow paths may be at least partially isolated, spatially and/or thermally, from electrical components of the hemodialysis system. In some cases, a gas supply may be provided in fluid communication with the dialysate flow path and/or the dialyzer that, when activated, is able to urge dialysate to pass through the dialyzer and urge blood in the blood flow path back to the patient. Such a system may be useful, for example, in certain emergency situations (e.g., a power failure) where it is desirable to return as much blood to the patient as possible. The hemodialysis system may also include, in another aspect of the invention, one or more fluid handling devices, such as pumps, valves, mixers, or the like, which can be actuated using a control fluid, such as air. In some cases, the control fluid may be delivered to the fluid handling devices using an external pump or other device, which may be detachable in certain instances. In one embodiment, one or more of the fluid handling devices may be generally rigid (e.g., having a spheroid shape), optionally with a diaphragm contained within the device, dividing it into first and second compartments.
Abstract:
A system for electronic patient care includes a hub. The hub is configured to monitor a patient-care device. The sandbox may be configured to control access to at least one of a hardware resource and a software resource. The hub is further configured to identify the patient-care device and execute an application to monitor the patient-care device. The hub executes the application within the sandbox component such that the application accesses the at least one of the hardware resource and the software resource through the sandbox component. The hub may be further configured to control the patient-care device. The hub may be further configured to receive an identification from the patient-care device and download the application from a server associated with the identification. The hub may be further configured to receive an identification from the patient-care device and update the application from a server associated with the identification.
Abstract:
A system includes first and second hubs. The first hub is configured to communicate data with a medical device through a Local Area Network and package the data into at least one application-layer packet. The second hub is configured to receive the at least one application-layer packet from the first hub operatively through at least one cellular network.
Abstract:
Dialysis systems comprising actuators that cooperate to perform dialysis functions and sensors that cooperate to monitor dialysis functions are disclosed. According to one aspect, such a hemodialysis system comprises a user interface model layer, a therapy layer, below the user interface model layer, and a machine layer below the therapy layer. The user interface model layer is configured to manage the state of a graphical user interface and receive inputs from a graphical user interface. The therapy layer is configured to run state machines that generate therapy commands based at least in part on the inputs from the graphical user interface. The machine layer is configured to provide commands for the actuators based on the therapy commands.
Abstract:
A processor of a medical device configured to communicate with a remote server can be programmed to protect the medical device from exposure to unauthorized or malicious software. A system or method to implement this form of protection can include, for example, at least one processor on the medical device, a control software module that controls the operation of the medical device and is executable on the processor, a data management module that manages data flow to and from the control software module from sources external to the medical device, and an agent module that has access to a limited number of designated memory locations in the medical device. In addition, a hemodialysis apparatus can be configured to operate in conjunction with an apparatus for providing purified water from a source such as a municipal water supply or a well. A system for controlling delivery of purified water to the hemodialysis apparatus can comprise a therapy controller of the hemodialysis apparatus configured to communicate with a controller of a water purification device, and a user interface controller of the hemodialysis apparatus configured to communicate with the therapy controller, and to send data to and receive data from a user interface.
Abstract:
A system for detecting whether a vascular access has been interrupted in an arrangement in which two catheters or needles are present in a blood vessel, fistula or graft. A fluid line leading to a pump is connected via a first connector to a first indwelling catheter, and a fluid line leading from a pump is connected via a second connector to a second indwelling catheter. Each connector is equipped with an electrode in contact with the lumen of the connector, the electrodes electrically connected to an electronic circuit that measures the impedance or conductivity of fluid between the first connector and second connectors via a fluid path through the blood vessel, fistula or graft. An electronic controller receives the impedance or conductivity data and processes the data to determine whether a vascular access disconnection has occurred. The processing may involve filtering the signal received by the controller, and/or setting provisional flags for a disconnection event that may be cleared if the signal changes before the expiration of a counter.
Abstract:
A system for detecting whether a vascular access has been interrupted in an arrangement in which two catheters or needles are present in a blood vessel, fistula or graft. A fluid line leading to a pump is connected via a first connector to a first indwelling catheter, and a fluid line leading from a pump is connected via a second connector to a second indwelling catheter. Each connector is equipped with an electrode in contact with the lumen of the connector, the electrodes electrically connected to an electronic circuit that measures the impedance or conductivity of fluid between the first connector and second connectors via a fluid path through the blood vessel, fistula or graft. An electronic controller receives the impedance or conductivity data and processes the data to determine whether a vascular access disconnection has occurred. The processing may involve filtering the signal received by the controller, and/or setting provisional flags for a disconnection event that may be cleared if the signal changes before the expiration of a counter.
Abstract:
A method and computer program product for monitoring one or more processes occurring during a first portion of a multi-portion recipe being executed on a processing device to obtain data concerning at least of portion of the one or more processes. At least a portion of the data is stored. The availability of the at least a portion of the data is enabled to one or more processes occurring during a second portion of the multi-portion recipe.
Abstract:
La presente invención se refiere en general a la hemodiálisis y a sistemas de diálisis similares, incluyendo una variedad de sistemas y métodos que harían que la hemodiálisis fuera más eficiente, fácil y/o más accesible; un aspecto de la invención se refiere generalmente a novedosos circuitos de fluido para el flujo de fluido; en un conjunto de modalidades, un sistema de hemodiálisis puede incluir una trayectoria de flujo de sangre y una trayectoria de flujo de dializado, en donde la trayectoria de flujo de dializado incluye uno o más de un circuito de balance, un circuito de mezclado y/o un circuito de dirección; en algunos casos, la preparación del dializado por el circuito de preparación puede estar separada de la diálisis del paciente; en algunos casos, los circuitos están definidos, por lo menos parcialmente, dentro de uno o más casetes, opcionalmente interconectados con conductos, bombas, o similares; en una modalidad, el circuito de fluido y/o las diferentes trayectorias de flujo de fluido pueden estar por lo menos parcialmente aislados, espacial y/o térmicamente, de los componentes eléctricos del sistema de hemodiálisis; en algunos casos se puede proporcionar un suministro de gas en comunicación de fluido con la trayectoria de flujo de dializado y/o el dializador, el cual, cuando se activa, puede impulsar al dializado para pasar a través del dializador e impulsar a la sangre en la trayectoria de flujo de sangre de regreso al paciente; dicho sistema puede ser útil, por ejemplo, en ciertas situaciones de emergencia (por ejemplo, en una falla de energía) en las que es preferible regresar la mayor cantidad posible de sangre al paciente; en otro aspecto de la invención, el sistema de hemodiálisis también puede incluir uno o más dispositivos de manejo de fluido, como bombas, válvulas, mezcladores, o similares, que pueden ser accionados usando un fluido de control, como aire; en algunos casos el fluido de control puede ser suministrado a los dispositivos de manejo de fluido utilizando una bomba externa u otro dispositivo, que en algunos casos puede ser desprendible; en una modalidad, uno o más de los dispositivos de manejo de fluido pueden ser generalmente rígidos (por ejemplo, teniendo una forma esferoidal), opcionalmente conteniendo un diafragma dentro del dispositivo, dividiéndolo en primero y segundo compartimientos.
Abstract:
A system for electronic patient care includes a hub. The hub is configured to monitor a patient-care device. The sandbox may be configured to control access to at least one of a hardware resource and a software resource. The hub is further 5 configured to identify the patient-care device and execute an application to monitor the patient-care device. The hub executes the application within the sandbox component such that the application accesses the at least one of the hardware resource and the software resource through the sandbox component. The hub may be further configured to control the patient-care device. The hub may be further 10 configured to receive an identification from the patient-care device and download the application from a server associated with the identification. The hub may be further configured to receive an identification from the patient-care device and update the application from a server associated with the identification. Sn xlx _L r zl 'L Z yN r