Abstract: A system suitable for delivering a therapeutic agent to a target site may include a container for holding a therapeutic agent, a pressure source having pressurized fluid, where the pressure source is in selective fluid communication with at least a portion of the container, a catheter in selective fluid communication with the container and configured for delivery of the therapeutic agent to a target site, a first valve connected between the container and the catheter, a second valve connected between the pressure source and the container, a button configured to selectively actuate the second valve, and a brake assembly coupled to the first valve and configured to selectively permit actuation of the second valve, such that when the first valve is in a first state, the brake assembly blocks the button such that the button does not actuate the second valve.

Abstract: A system for delivering an agent including a plurality of particles to a target site. The system incudes a catheter having a first wall defining an inner lumen for delivery of the agent to the target site, and a second wall surrounding the first wall to define an outer lumen therebetween for delivery of a fluid to the target site. The catheter has a distal end terminating with a primary opening of the inner lumen and a secondary opening of the outer lumen. A hub associated with a proximal end of the catheter includes a first inlet for receiving a supply of the agent and a second inlet for receiving a supply of the fluid, wherein the first inlet is in fluid communication with the inner lumen, and the second inlet is in fluid communication with the outer lumen.

Abstract: A sheet for covering a mattress having at least one strap attached to the mattress that includes openings that accommodate strap or that includes markings for such openings. A pattern for making such openings. The sheet further includes a first end, and a second end. The sheet has openings or pockets in the first end and in the second end to allow the at least one strap attached to the mattress to pass through the sheet. The at least one strap is for securing the mattress.