Micro-fabricated guidewire devices having elastomeric fill compositions

A guidewire device comprising:

• a micro-fabricated elongated outer member having
• an outer surface and an interior surface forming a lumen extending from a proximal end to a distal end of said micro-fabricated elongated outer member along a longitudinal axis of said micro-fabricated elongated outer member, and
• a plurality of resultant beams formed between adjacent fenestrations made through said outer surface and said interior surface into said lumen, said resultant beams having an outer surface, an inner surface, a proximal surface, and a distal surface, said resultant beams extending spirally around the longitudinal axis such that a flexing bias in said micro-fabricated elongated outer member is reduced, adjacent fenestrations spaced apart along the longitudinal axis of said elongated outer member having between a five degree variance and a forty degree variance;
• a material monolithically encapsulating said elongated outer member, forming an outer elastomer laminate layer, covering said outer surface, said inner surface, said proximal surface, and said distal surface of each resultant beam of said plurality of resultant beams, and completely filling each fenestration of said plurality of fenestrations, said material forming a continuous elastomer lumen at least partially extending along a longitudinal axis of said elongated outer member from said proximal end to said distal end of said elongated outer member;
• and
• an inner member disposed within a substantial portion of said lumen.