Abstract: An access tube is used for accessing an anatomic space, such as a pericardial space between the parietal and visceral pericardia. The access tube is advanced against the parietal pericardium and an anchor structure thereon embedded into the parietal pericardium. The access tube can then be used to separate the parietal and visceral pericardia and enlarge the pericardial space. After such enlargement, a needle or other access device can be introduced through the access tube into the pericardial space to provide access for a wide variety of purposes, including aspiration, infusion, and guidewire placement.

Abstract: A system for tying down cargo on the deck of a transport vehicle such as a cargo of stacked steel plates on a railway flat car. Link chains are used for tying the cargo down. The system utilizes chain retainers secured to the deck or to the bottoms of C-channels recessed in the deck. The retainers are positioned on opposite sides of the cargo and close in to the bottom. A selected link of a length of each of two tie-down chains is inserted into one of two retainers. The free ends of the two chains are fastened together on top of the cargo and then ratcheted to place the chains under tension. The chain retainers are in the form of one-piece castings with a pair of right and left hand uprights with a slot therebetween in which a chain link will fit and pivot in its narrow orientation but not in its wide orientation. A selected link in its wide orientation serves to anchor the lower end of the chain to a chain retainer.