Patent ID: 8231668

Claim:
Stent for introducing into human body cavities with a proximal first end to be introduced and a distal final end to be introduced, with a sleeve-like stent body made of biocompatible material and with at least one support wire provided on the inside of the stent body, wherein the support wire rests in a spiral shape on the inside in a tensioned state of the stent, wherein the stent body is collapsed in a compressed insertion state of the stent and is expandable into the tensioned state, wherein the support wire is securely connected at its proximal end in the region of the proximal first end to be introduced to the stent body and is led, with its distal end in the compressed insertion state, out of the distal final end to be introduced of the stent body, wherein the support wire is embodied as a shape-retentive spring wire which is pretensioned in the compressed insertion state at least in the region of the stent body and is drawn into a stretched-out straight linear shape over an entire length of the stent body and which contracts in the longitudinal direction upon springing open at least in sections into the spiral shape and expands radially in a spiral shape in order to effect a radial expansion of the collapsed stent body until the tensioned state is reached, wherein a support wire section of the support wire which extends inside the stent body from the distal final end to be introduced to the proximal first end to be introduced of the stent body has substantially the same length as the stent body in the compressed insertion state of the stent, with the support wire fastened to an interior fastening ring provided at the proximal first end to be introduced of the stent body and with the support wire freely movable in the axial direction guided in the interior of the stent body, wherein a plurality of guide sections are provided in the inner surface of the stent body to guide the support wire, wherein the guide sections are loops in which the support wire is guided such that it can be moved freely in the axial direction, wherein a reinforcement is provided which extends on the inside of the stent body in the longitudinal direction of the stent body, wherein the reinforcement is a non-spring-expanding wire and wherein in the stretched state of the support wire, the coil diameter is less than 0.5 cm, or less than 0.2 cm.