Patent ID: 7637886

Claim:
A radially expandable device having a shaped form, comprising: a monolithic balloon body constructed of fluoropolymer material, the fluoropolymer material having a microstructure of nodes interconnected by fibrils, the nodes having an internodal distance of about 1 μm to about 5 μm and oriented to create spaces between the nodes forming channels extending from the inner surface to the outer surface of the wall through which a fluid can flow; wherein the body has a structure that enables the body to receive the fluid through a fluid conduit in an amount sufficient to provide a fluid force to expand the body from a reduced diameter collapsed configuration to a pre-defined fixed maximum increased diameter expanded configuration of about the diameter dimension of a body passage diameter in which the device is selected to be implanted; and wherein the microstructure of nodes interconnected by fibrils has a predetermined porosity and structure suitable for regulating a flow of the fluid through the channels at a rate substantially independent of the fluid force as the fluid is introduced for expansion of the body.