Abstract: Within a programmable logic device (PLD), a DDR SDRAM interface for a DDR SDRAM is provided, the DDR SDRAM providing data to the PLD on the rising and falling edges of a DQS signal, the interface including: a first register adapted to capture data associated with the falling edges of the DQS signal; a second register adapted to capture data associated with the rising edges of the DQS signal; and clock edge selection logic circuitry coupled to clock inputs of the first and second registers and adapted to select between the rising or falling clock edges of an internal PLD clock to clock the first and second registers and thereby transfer the captured data into core logic for the PLD, the selection of the clock edge based on a phase relationship between the internal PLD clock and the DQS signal.

Abstract: A tissue retractor for retracting tissue opened by an incision, said tissue retractor including a base support unit having a topside and an underside. The topside comprises at least one securing mechanism and the underside is adapted to be conformable and to be removably attachable to a surface proximate to the incision. The tissue retractor also includes at least one tissue hook having a tissue engagement portion and a mounting portion, wherein the tissue engagement portion is capable of engaging at least the periphery of the incision. The tissue retractor also includes at least one retractable member substantially inelastic in its central longitudinal axis and bendable in any axes deviating from said central longitudinal axis.

Abstract: In one embodiment of the invention, a programmable logic device (PLD) includes a plurality of programmable logic blocks arrayed in rows and columns, wherein each programmable logic block is coupled to a corresponding vertical routing resource and a corresponding horizontal routing resource, and wherein each vertical and horizontal routing resource includes a plurality of wires organized into wire groups and each programmable logic block has a set of inputs organized into input groups. The PLD also includes a plurality of connection boxes, each connection box corresponding to a programmable logic block and operable to couple a given wire group in one of the corresponding vertical and horizontal routing resources to a given input group independently of whether a given wire group in the remaining one of the corresponding vertical and horizontal routing resources is coupled through the connection box to the given input group.

Abstract: A pump installed inside a graft in a body such as the human body to force fluid such as blood through that graft. The pump can be one which operates totally from the outside of the graft, forcing fluid through the graft without extending inside the graft. The pump can be an impedance pump, that operates based on the fluidic mismatches between the graft, and other fluid carrying vessels within the human body.

Abstract: A percutaneous cannula is provided that directs blood into a vessel of a patient. The cannula includes a main cannula portion and a tip portion. The tip portion directs blood-flow in a direction generally counter to the direction of flow through the lumen. The cannula is configured to prevent blood-flow exiting the distal end from immediately discharging against a wall of the vessel.

Abstract: A percutaneous cannula is provided that directs blood into a vessel of a patient. The cannula includes a main cannula portion and a tip portion. The tip portion directs blood-flow in a direction generally counter to the direction of flow through the lumen. The cannula is configured to prevent blood-flow exiting the distal end from immediately discharging against a wall of the vessel.

Abstract: A percutaneous cannula is provided that directs blood into a vessel of a patient. The cannula includes a main cannula portion and a tip portion. The tip portion directs blood-flow in a direction generally counter to the direction of flow through the lumen. The cannula is configured to prevent blood-flow exiting the distal end from immediately discharging against a wall of the vessel.

Abstract: A percutaneous cannula is provided that directs blood into a vessel of a patient. The cannula includes a main cannula portion and a tip portion. The tip portion directs blood-flow in a direction generally counter to the direction of flow through the lumen. The cannula is configured to prevent blood-flow exiting the distal end from immediately discharging against a wall of the vessel.

Abstract: A percutaneous cannula is provided that directs blood into a vessel of a patient. The cannula includes a main cannula portion and a tip portion. The tip portion directs blood-flow in a direction generally counter to the direction of flow through the lumen. The cannula is configured to prevent blood-flow exiting the distal end from immediately discharging against a wall of the vessel.

Abstract: Systems and methods are disclosed to provide programmable input/output functionality for a programmable logic device. For example, in accordance with one embodiment of the present invention, a programmable interface selectively employs a scalable serializer-deserializer and clock and data recovery circuit. The programmable interface further includes programmable input/output buffers and embedded memory to allow the programmable logic device to support a wide range of input/output interface standards.

Abstract: A percutaneous cannula is provided that directs blood into a vessel of a patient. The cannula includes a main cannula portion and a tip portion. The tip portion directs blood-flow in a direction generally counter to the direction of flow through the lumen. The cannula is configured to prevent blood-flow exiting the distal end from immediately discharging against a wall of the vessel.

Abstract: A method for draining and sealing a pseudo aneurysm in which a guide wire is inserted over a needle. Then a multi-lumen catheter is inserted over the guide wire. The catheter is used to occlude the vessel puncture and inhibit the flow of fluids between the vessel and the pseudo aneurysm. The pseudo aneurysm is then aspirated and the vessel puncture is allowed to clot and heal.

Abstract: A zero-power non-volatile memory cell includes a control element, an avalanche injection element, and a CMOS inverter. A floating-gate electrode is capacitively coupled to the control element, the avalanche injection element, and to the CMOS inverter. The avalanche injection element is arranged, so as to transfer electrical charge onto the floating-gate electrode. The presence of stored data within the memory cell is indicated by reading a supply voltage V.sub.DD at an output terminal of the inverter. Accordingly, data can be read from the non-volatile memory cell without applying electrical power to the cell.

Abstract: A sense amplifier is provided for sensing an impedance between two lines. The impedance has two levels. The two lines are, in one embodiment, a product term line and a product term ground line of a programmable logic device. In the amplifier, a pull-up circuit connects one of the two lines to a high voltage (for example, V.sub.DD =5 volts), and a pull-down circuit connects the other line to a low voltage (for example, ground). A negative feedback circuit controls the pull-up and pull-down circuits in response to the voltage on one of the two lines so that the impedance of the pull-up circuit changes in direct relationship with respect to the voltage of that line, and the impedance of the pull-down circuit changes in an inverse relationship with respect to that voltage. The feedback circuit has a delay at least as long as the transition of that voltage between its two values, which values correspond to the two impedance levels. The delay permits to increase the transition speed in a power-efficient manner.