Abstract: A fluid injector system for delivering a multi-phase fluid injection to a patient and methods of fluid delivery is disclosed. Methods of creating and using a multi-aspect fluid path impedance model of the injector system are used. Modeling and adjustment of factors that affect impedance and prevent or reduce backflow, reduce the likelihood of fluid flow rate spikes and provide more accurate flow rates and mixing ratios of fluids may be repeated or happen essentially continuously during an injection. The adjustments may be determined before the injection or determined and/or adjusted during the injection. The determination may include sensor feedback commonly used in injectors such as pressure and position feedback as well as other sensors. In all cases, the user can be notified of adjustments through on-screen notices and/or through the recordation of the injection data by a control device of the injector at the conclusion of the injection.

Abstract: This invention relates to a safety line system for use by a person working at a height above the ground. In particular the invention relates to a support post for a safety line system. A support post assembly for supporting a fall safety line comprises a base; a support post to which a fall safety line is connectable, the support post having a longitudinal axis; cooperating curved bearing surfaces disposed between the base and the support post; and a detent assembly for preventing relative movement of the bearing surfaces below a threshold force, application of a force to the support post by the fall safety line above the threshold force causing the support post to pivot with respect to the base such that the bearing surfaces slide with respect to each other and friction between the bearing surfaces dissipates energy.

Abstract: One aspect relates to a tensioning device comprising a pulley including a drive spindle and a pulley wheel connected to the drive spindle, a lifeline passing, in use, around the pulley wheel; a locking member configured to engage, in use, with a part of said lifeline to prevent relative movement of the lifeline with respect to the locking member in a first direction; and a handle assembly connected to the drive spindle, the handle assembly being moveable between a first, disengaged position in which rotation of the handle assembly does not cause rotation of the drive spindle and a second, engaged position in which rotation of the handle assembly rotates the drive spindle, rotation of the drive spindle rotating the pulley to move the lifeline in a second direction relative to the locking member, thereby tensioning the lifeline.