Patent ID: 7789915

Claim:
A stent comprising: a first coiled wire defining a first lumen between a distal end portion and a proximal end portion, the first lumen communicating outside the first coiled wire through small spaces between adjacent coils; and a second coiled wire defining a second lumen disposed within the first lumen and secured to the first hollow coiled wire such that an outer surface of the second coiled wire substantially contacts an inner surface of the first coiled wire between the distal and proximal end portions of the first coiled wire; further comprising a substantially stretch resistant rod disposed entirely within the first lumen and secured to the distal and proximal end portions, and each of the distal and proximal end portions further comprise an end cap substantially closing the respective end portion, each end cap comprising a single aperture configured to allow a wire guide to extend through the respective aperture and the second lumen, and wherein each end cap restricts yet restrict flow or movement of a component into the remainder of the first lumen not including the second coiled wire.