Abstract: An apparatus and method for preventing free flow through an infusion set utilizes an occluder disposed within the infusion set to selectively prevent flow therethrough. The occluder may be responsive to a pressure differential within the infusion set or may respond to compression of the infusion set. The occluder may also be configured to allow flow when the infusion set adjacent the occluder is moved sideways relative to the occluder or maintained at an angle relative to the occluder. When a pair of occluders are used in sequence, an in-line pump may be formed.

Abstract: An apparatus and method for preventing free flow through an infusion set utilizes an occluder disposed within the infusion set to selectively prevent flow therethrough. The occluder may be responsive to a pressure differential within the infusion set or may respond to compression of the infusion set. The occluder may also be configured to allow flow when the infusion set adjacent the occluder is moved sideways relative to the occluder or maintained at an angle relative to the occluder. When a pair of occluders are used in sequence, an in-line pump may be formed.

Abstract: An electric power generation and distribution system includes a power distribution panel, a plurality of power distribution nodes in communication with the power distribution panel, and a plurality of interconnect couplings that couple the power distribution panel to each of the plurality of power distribution nodes. Each of the plurality of interconnect couplings communicate both electrical power signals and communication signals across a shared cable system.

Abstract: A Queue Manager (QM) system and method are provided for communicating control messages between processors. The method accepts control messages from a source processor addressed to a destination processor. The control messages are loaded in a first-in first-out (FIFO) queue associated with the destination processor. Then, the method serially supplies loaded control messages to the destination processor from the queue. The messages may be accepted from a plurality of source processors addressed to the same destination processor. The control messages are added to the queue in the order in which they are received. In one aspect, a plurality of parallel FIFO queues may be established that are associated with the same destination processor. Then, the method differentiates the control messages into the parallel FIFO queues and supplies control messages from the parallel FIFO queues in an order responsive to criteria such as queue ranking, weighting, or shaping.

Abstract: A disposable, integrated extracorporeal blood circuit employed during cardiopulmonary bypass surgery performs gas exchange, heat transfer, and microemboli filtering functions in a way as to conserve volume, to reduce setup and change out times, to eliminate a venous blood reservoir, and to substantially reduce blood-air interface. Blood from the patient or prime solution is routed through an air removal device that is equipped with air sensors for detection of air. An active air removal controller removes detected air from blood in the air removal device. A disposable circuit support module is used to mount the components of the disposable, integrated extracorporeal blood circuit in close proximity and in a desirable spatial relationship to optimize priming and use of the disposable, integrated extracorporeal blood circuit. A reusable circuit holder supports the disposable circuit support module in relation to a prime solution source, the active air removal controller and other components.

Abstract: A disposable, integrated extracorporeal blood circuit employed during cardiopulmonary bypass surgery performs gas exchange, heat transfer, and microemboli filtering functions in a way as to conserve volume, to reduce setup and change out times, to eliminate a blood reservoir, and to substantially reduce blood-air interface. Blood from the patient or prime solution is routed through an air removal device that is equipped with air sensors for detection of air. An active air removal controller removes detected air from blood in the air removal device. A disposable circuit support module is used to mount the components of the disposable, integrated extracorporeal blood circuit in close proximity and in a desirable spatial relationship to optimize priming and use of the disposable, integrated extracorporeal blood circuit. A reusable circuit holder supports the disposable circuit support module in relation to a prime solution source, the active air removal controller and other components.

Abstract: A disposable, integrated extracorporeal blood circuit employed during cardiopulmonary bypass surgery performs gas exchange, heat transfer, and microemboli filtering functions in a way as to conserve volume, to reduce setup and change out times, to eliminate a venous blood reservoir, and to substantially reduce blood-air interface. Blood from the patient or prime solution is routed through an air removal device that is equipped with air sensors for detection of air. An active air removal controller removes detected air from blood in the air removal device. A disposable circuit support module is used to mount the components of the disposable, integrated extracorporeal blood circuit in close proximity and in a desirable spatial relationship to optimize priming and use of the disposable, integrated extracorporeal blood circuit. A reusable circuit holder supports the disposable circuit support module in relation to a prime solution source, the active air removal controller and other components.

Abstract: According to one aspect of the present invention, this invention implements a low latency, wide bandwidth method and system for converting a numeric digital values into a pulse density modulated analog output signals. Such output signals having their lowest output frequency much closer to the system clock frequency, thus enabling wider bandwidth and simpler implementations than with traditional approaches. This method is based in part on an adaptation of Bresenham's Line Drawing Algorithm.

Abstract: A technique facilitates the flow of traffic along highways by placing sensor devices within vehicles traveling along a highway. A sensor device within a first vehicle is able to detect whether the vehicle immediately ahead is increasing or decreasing the distance back to the first vehicle. The driver of the first vehicle is notified of the increasing or decreasing distances through simple indicators that enable the driver to take corrective action more appropriately than otherwise possible. The sensor device and indicators reduce driver overreaction that can result in standing wave traffic patterns, traffic congestion, wasted fuel and wasted time. Additionally, the system can be designed to integrate information from multiple users to enable coordination of movement among motor vehicles to improve overall traffic speed in a given line.

Abstract: An apparatus and method for preventing free flow through an infusion set utilizes an occluder disposed within the infusion set to selectively prevent flow therethrough. The occluder may be responsive to a pressure differential within the infusion set or may respond to compression of the infusion set. The occluder may also be configured to allow flow when the infusion set adjacent the occluder is moved sideways relative to the occluder or maintained at an angle relative to the occluder. When a pair of occluders are used in sequence, an in-line pump may be formed.

Abstract: An extracorporeal blood circuit for use with a venous return line and an arterial line coupled to a patient. The extracorporeal blood circuit can include a venous air removal device coupled to the venous return line. The venous air removal device can perform an active air removal function. The extracorporeal blood circuit can include a sensor that determines a blood level in the venous air removal device, a purge line coupled to the venous air removal device, and a controller connected to the sensor. The controller can cause the venous air removal device to perform the active air removal function through the purge line when the blood level is less than a threshold. The extracorporeal blood circuit can further include a pump coupled to the venous air removal device, an oxygenator coupled to the pump, and a blood filter coupled to the oxygenator and the arterial line.

Abstract: A power distribution assembly (PDA) includes a plurality of power modules that are installed within a chassis that is mounted to a vehicle, such as an aircraft. The power modules are used to control aircraft systems such as braking, navigation, or temperature control systems. The PDA includes first and second microprocessors that have separate serial busses that are in communication with each of the power modules. A first power supply powers the first microprocessor and each of the power modules and a second power supply powers the second microprocessor and each of the power modules independently from the first power supply. Additionally the first and second microprocessors communicate with each other via both serial busses to determine which microprocessor is in active control and which microprocessor is on standby in addition to monitoring the health of the other microprocessor.

Abstract: A switching system includes a microcontroller that provides a powering signal to a solid state switch, such as a field effect transistor (FET). A powering signal from the microcontroller preferably is amplified using a charge pump to triple the magnitude of the signal from the microcontroller to provide a sufficient voltage to operate the gate of the FET. The microcontroller preferably provides the powering signal at least several cycles during a selected time period on a repeated, cyclical basis. During times when the controller is not providing the powering signal to operate the gate of the FET, the controller is free to perform other functions. Various other features, including over current monitoring are disclosed.

Abstract: A power distribution assembly (PDA) includes AC and/or DC power modules and control modules that are installed within a chassis that is mounted to a vehicle, such as an aircraft. Each module includes a wiring harness connector and a control connector for attachment to a motherboard. A wiring harness is externally mounted to the chassis to provide a simplified connection for the wiring harness connector. The modules can be individually and selectively removed from the chassis for repair or replacement without having to remove the entire PDA from the aircraft. This is accomplished by simply removing the module from the chassis, thereby disconnecting the aircraft interface and motherboard connectors for the selected modules. Also, a common PDA can be utilized on different types of aircraft by installing desired modules within the chassis.

Abstract: A power distribution assembly (PDA) includes AC and/or DC power modules and control modules that are installed within a chassis that is mounted to a vehicle, such as an aircraft. Each module includes a wiring harness connector and a control connector for attachment to a motherboard. A wiring harness is externally mounted to the chassis to provide a simplified connection for the wiring harness connector. The modules can be individually and selectively removed from the chassis for repair or replacement without having to remove the entire PDA from the aircraft. This is accomplished by simply removing the module from the chassis, thereby disconnecting the aircraft interface and motherboard connectors for the selected modules. Also, a common PDA can be utilized on different types of aircraft by installing desired modules within the chassis. Thus, the number and type of modules are selected to meet predetermined specifications for a specific aircraft and then installed within a PDA common to all aircraft.

Abstract: A simplified self-latching relay switching circuit includes a switch, a power shunt circuit including a power node and a shunting device for shunting power from the node to ground, a relay for latching power into the circuit, and a passive circuit which operates the shunting device. When the switch is activated a first time, power is applied to the power shunt circuit, and the node voltage rises according to an RC time constant. The passive circuit is clamped to the node, so a voltage in the passive circuit is prevented from rising rapidly. When the node voltage reaches a threshold value, the relay is activated, latching power into the power shunt circuit. If the switch is then activated a second time, the clamp no longer restrains the passive circuit voltage from rising rapidly. The rapid rise of the passive circuit voltage activates the shunting device, which deactivates the relay to unlatch power to the power shunt circuit, and shunts the node voltage to ground.

Abstract: A vapor pressure retention apparatus for applying pressure to the outside surface of a container holding a carbonated beverage. Application of the pressure increases the vapor pressure of the air above the carbonated beverage and thus allows less of the carbon dioxide dissolved in the beverage to escape into the air.

Abstract: A reduced arcing contact switching circuit. It is desirable to control the switching of electrical contacts so that opening and closing occur at the time when zero power is being transferred to the load so as to substantially reduce arcing at the contacts and thus extend contact life. In a purely resistive circuit, for example, the supply voltage and current will be in-phase and contact switching should occur when the current and voltage signals pass through zero degree phase angle. Control of contact switching is accomplished with this invention by producing a count value that represents the phase angle at which contact movement should be initiated, so that the actual closing or opening will occur at the desired phase angle. When the count value and a preselected count are approximately equal, a flip-flop is enabled to pass the control information (open or close contacts) to a relay driver. The relay driver energizes or deenergizes (as the case may be) the relay to open or close the contacts.

Abstract: A mechanism for the testing of digital signal processing circuitry (state machines and combinational logic) is built-in and continuously on-line with the system being tested. The operation of the signal processing architecture is monitored dynamically, namely across state transitions, employing a parity prediction operator which predicts the parity that should be produced by combining the contents of selected inputs and outputs of the architecture prior to and subsequent to a signal processing transition. If, due to a single bit failure, the predicted parity is not achieved, the output of an error detector will indicate a state other than that corresponding to the predicted parity and thereby report an error. To ensure accurate operation of the error reporting mechanism, the error signal is modulated by a clock signal the frequency of which is relatively low compared with the system clock that controls state transitions. The detection of interconnect wiring faults (e.g.