Abstract: Devices and methods for providing fluid to a lumen of a guide catheter with a fluid reservoir fluidly coupled to the lumen, such that pressure within the lumen is maintained at a desired level, are disclosed. As one example, a delivery apparatus can include a handle, a shaft extending within and distally from the handle and having a main lumen, and a reservoir fluidly coupled to the main lumen. The reservoir is filled with fluid and has an adjustable fluid volume, and the reservoir is configured to passively supply fluid to the main lumen based on a fluid pressure in the main lumen.

Abstract: Aspects of the disclosure relate to storage assemblies including at least part of a delivery device and an implant. The storage assemblies are configured to trap sterilizing ethylene oxide gas using its high water solubility and converting the escaped ethylene oxide to less detrimental ethylene glycol and ethylene chlorohydrin to protect the implant from damage. In one example, the storage assembly includes an inner container housing the implant and sterilizing fluid and an outer container positioned over the inner container, wherein the outer container is at least partially filled with aqueous water. The implant may be a prosthetic heart valve. Aspects of the disclosure also relate to methods of sterilizing the storage assemblies of the disclosure.