Abstract: A conductive hydrogel precursor solution cures after injection into the vasculature of the myocardium. The vasculature acts as a mold for the hydrogel and allows for a pacing signal to be conducted across the myocardium and not at a single point like traditional pacing leads. The catheter-based delivery can accurately place the hydrogels into the myocardial veins and can fill the venous tributaries. In situ crosslinking of the hydrogel precursor solution is achieved through several mechanisms, such as redox initiation by mixing a reducing reagent and oxidizing agent after injection. Conductivity is achieved by doping in conductive polymers or other conductive elements such as ionic species, metallic nanoparticles, or graphene nanoplatelets. To ensure long-term conductivity, hydrogel macromers may be synthesized without hydrolytically labile groups such as esters, and the conductive elements may be conjugated directly to the hydrogel matrix.

Abstract: Catheter ablation systems are used to isolate the Left Atrial Appendage (“LAA”), or portions of the LAA, by using balloons. The systems deliver an ablation fluid such as alcohol in order to destroy the LAA tissue isolated between the balloons, deliver saline to dilute the ablation fluid, and remove excess fluid and particulates by suction to prevent excess residual alcohol from remaining in the LAA.

Abstract: A transportable modular rack system is disclosed. The transportable modular rack system comprises a modular cage and a moveable insert rack that is at least partially positionable within the interior of the modular cage. Articles and/or article housings can be positioned on shelves positioned within the interior of the moveable insert rack. The transportable modular rack is suitable for use in aircraft, watercraft and/or land vehicles. A pallet-mounted transportable modular rack system comprising modular rack components and moveable insert rack components is also disclosed.

Abstract: An expandable rack for supporting and/or storing articles and/or article housing structured and arranged to transition from a collapsed position to an extended position is disclosed. The rack is suitable for use in a confined space such as the interior of a vehicle. The rack comprises a plurality of substantially vertical support posts and a plurality of foldable substantially horizontal frame members that are pivotally connected between adjacent substantially vertical support posts. The horizontal frame members are moveable from a collapsed folded position, that is adjacent to and substantially vertical along a vertical support post, to an extended unfolded position, that is substantially perpendicular to the support post. The expandable rack can comprise integral fasteners. A pallet mounted expandable rack system and a method for deploying an expandable rack within a vehicle are also disclosed.