Abstract: A system for monitoring positioning of a machine is disclosed. The system includes an IMU located at a first location on the machine and configured to generate positioning data associated with the first location. The system includes a machine controller operatively associated with the machine. The machine controller is configured to determine predicted positioning data for a second location on the machine based on positioning data associated with the first location. The machine controller is further configured to generate a virtual IMU at the second location based on the predicted positioning data for the second location, wherein the virtual IMU generates virtual positioning data for the second location. The system further includes an application controller operatively associated with the machine controller and configured to use the virtual positioning data as input data for one or more machine-associated applications.

Abstract: A method of determining a location of a machine is provided. The method includes determining a location of the machine based on the signals received from an IMU at each of a plurality of unit time. The method also includes determining a location of the machine corresponding to a first unit time based on signals received from the satellite positioning unit at a second unit time. The method includes determining an error associated with the location of the machine, by a processing unit, based on the location determined by the satellite positioning unit and the location determined based on the signals received from the IMU at a unit time successive to the first unit time. The method also includes adding the error to the location of the machine determined based on the signals received from the IMU at a successive unit time to the second unit time.

Abstract: A hemodialysis needle assembly and system that includes a first outer needle having a conical tip and a sidewall where the sidewall has a plurality of apertures located adjacent the tip, a second introducer needle located within the outer needle, a guide wire located within the introducer needle, and a spring motor removably secured to the outer needle. The introducer needle and the guide wire are inserted into a patient's vein and the spring motor releases the outer needle into the vein after the introducer needle and the guide wire are properly placed within the patient. The introducer needle, the guide wire, and the spring motor are removed from the patient after the outer needle is in place within the vein.

Abstract: A column for liquid chromatography includes a chamber adapted to receive packing medium. Openings in the chamber allow fluid to pass through it. Porous plugs in the chamber retain the packing medium. A piston and one porous plug are movable within the chamber to compress the packing medium. A fitting engages the piston and is adjustably movable for moving the piston.

Abstract: Guard columns for high-pressure liquid chromatography (HPLC) apparatuses. These guard columns can be removable and/or metallic guard columns. Further, all of the outlet of the guard column can substantially engage the inlet of an HPLC column in the HPLC apparatus. Also, an HPLC apparatus that includes a guard column, a hand-tightened top end fitting at a first end of the HPLC apparatus and a hand-tightened bottom end fitting at a second end of the HPLC apparatus.

Abstract: Guard columns for high-pressure liquid chromatography (HPLC) apparatuses. These guard columns can be removable and/or metallic guard columns. Further, all of the outlet of the guard column can substantially engage the inlet of an HPLC column in the HPLC apparatus. Also, an HPLC apparatus that includes a guard column, a hand-tightened top end fitting at a first end of the HPLC apparatus and a hand-tightened bottom end fitting at a second end of the HPLC apparatus.

Abstract: A medico-surgical suction system has a container with an outlet connected to a vacuum pump and an inlet connected to a suction catheter via a dual-lumen tube assembly one end of which is connected to the container and the other end of which is has a suction control and a coupling for the catheter. A valve located in the outlet of the container is connected to the suction control via a minor lumen of the tube. A side lumen enables the vacuum pump to apply reduced pressure to one end of the valve which holds the valve off against the action of a spring. Actuation of the suction control allows air to flow to the valve via the minor lumen so that the effect of the reduced pressure is overcome and the spring opens the valve.