Patent ID: 8632606

Claim:
A medical stent comprising: a coil formed by winding a wire around an axis; an outer layer formed to be substantially tubular and made from a first resin material, wherein the outer layer is provided on an outer peripheral side of said coil and coaxial to said coil; an inner layer formed to be substantially tubular and made from a second resin material, wherein the inner layer is provided on an inner peripheral side of said coil and coaxial to said coil; and an engaging member, configured to engage a tissue, said engaging member having a first end provided on an outer peripheral face of said outer layer, and a second end extending in a direction of said axis and opening to the outer side of the medical stent in a radius direction of the outer layer, wherein said coil comprises: a marker coil part and is formed by winding said wire around said axis; a first normal-wound coil part which is connected to a distal end of the marker coil part is formed by winding said wire around said axis; and a second normal-wound coil part which is connected to a proximal end of the marker coil part and is formed by winding said wire around said axis, wherein each of a pitch of said wire around the axis in said first normal-wound coil part and a pitch of said wire around the axis in said second normal-wound coil part is greater than a pitch of said wire around the axis in said marker coil part, and wherein said marker coil part of said coil is provided at a position corresponding to a position of said second end of said engaging member in said direction of said axis.