Device for positioning a stent

A device, comprising:

• a guide configured to push a stent through a lumen of a natural canal;
• and
• a stent, the stent comprising a lateral wall having at least one orifice,
• wherein the guide comprises at least one flexible part having:
• a predetermined longitudinal stiffness such that the guide does not kink by pushing the stent along the lumen and
• a lateral flexibility that allows a reversible deformation of the at least one flexible part from a straight position to a bent position so:
• as to follow the curve of the natural canal under an application of minimal external forces exerted by an operator such that the stent does not cause any injury in the natural canal, and
• a deformation of the guide by a change in a direction following a passage through an obstacle creates an increasing of a resistance to progression of the guide inside the lumen of the natural canal which is felt by an operator and so the progression of the guide cannot continue unless the operator applies to the device a force that will more deform the canal;
• wherein the guide comprises at least one straight and rigid proximal rod prolongated by the at least one flexible part, and a segment of the at least one flexible part which is closest to the straight and rigid proximal rod has a highest flexibility of the at least one flexible part,
• a portion of the guide at a location on a side of the at least one flexible part that is opposite from the straight and rigid proximal rod is configured to be insertable into the stent, by virtue of an internal housing of the stent in which the guide can be inserted,
• the guide is a continuous member,
• the guide includes a distal tip,
• the guide is configured to be insertable into a pusher tube so that an abutment of the guide is in contact with a proximal end of the pusher tube,
• an outer diameter of the guide is non-constant, with an outer diameter of the straight and rigid proximal rod being larger than an outer diameter of the at least one flexible part, the outer diameter of the guide having an abrupt decrease from the straight and rigid proximal rod to the at least one flexible part.