BigPatents India

A dilation device (1) to dilate the contracted biliary tract, ureter and blood vessel etc. made-up of a wire or a strip (2) primarily comprising set of segments (3) and two opposite atraumatic ends (4, 5), and each such segment (3) comprising set of loop structures (6, 11, 12), having one open end (7), another closed end (8) and two arms (9 and 10) is provided. A method of constructing the dilation device comprising steps of turning the wire or strip (2) to form loop structures (6, 11, 12) which form a segment (3) and continuous to form next segment (3) of such loop structures (6, 11, 12) by turning one of the two arms (10) of last loop structure (12) of previous segment (3) to opposite side and continuous as inter-connector part (14), which is turned back onto itself to form loop structures (6, 11, 12) of next segment (3) is also provided.