A catheter device (1101) comprising a micro-fabricated elongated outer member having a plurality of fenestrations formed in at least a distal portion of the outer member, the fenestrations extending to the lumen (1120) of the elongated outer member, the plurality of fenestrations defining a plurality of axially extending resultant beams (520) and a plurality of circumferentially extending rings (1010), and an elastomer matrix (1060) disposed within the plurality of fenestrations to form a lumen (810) extending along the distal portion, the elastomer matrix having a lower elastic modulus than the elongated outer member is provided.
