Device forming an infusion catheter for treating at least one partial or total obstruction in a passage, such as a body passage

A one piece infusion catheter device having an elongate, substantially tubular shape defining a longitudinal axis X-X, an outer wall and an inner wall and defining a distal end and a proximal end, configured to be introduced into a conduit having an inner wall and an outer wall and having at least one partial or total obstruction or occlusion to be treated, said one piece infusion catheter device comprising, at a distal end, on said outer wall, one or more infusion orifices for an infusion liquid, and, upstream from the one or more infusion orifices, on said catheter outer wall, at least one temporary obturating element having a rest non obturating position and a working obturating position for temporary obturating said conduit, wherein said one piece infusion catheter device comprises:

• a. a first element, which is substantially tubular and made of a flexible but substantially non-expandable and substantially non-collapsible material, configured to define a first channel for receiving a guidewire, and having an outlet opening at the distal end of the one piece infusion catheter device;
• b. a second element, which is substantially tubular and made of a flexible but substantially non-expandable and substantially non-collapsible material, configured to define a second channel for receiving the infusion liquid, said one or more infusion orifices passing through the wall of the second element in order to infuse the infusion liquid from the second channel to the outside of the one piece infusion catheter device;
• and
• c. wherein said catheter comprises at least one or more temperature sensors, of which at least one of the temperature sensors is configured to be positioned on a distal part of the guidewire to measure the temperature of the infusion fluid, downstream from the one or more infusion orifices and at least downstream of the obstruction or occlusion.

A one piece infusion catheter device having an elongate, substantially tubular shape defining a longitudinal axis X-X, an outer wall and an inner wall and defining a distal end and a proximal end, configured to be introduced into a conduit having an inner wall and an outer wall and having at least one partial or total obstruction or occlusion to be treated, said one piece infusion catheter device comprising:

• a. a first element, which is substantially tubular and made of a flexible but substantially non-expandable and substantially non-collapsible material, configured to define a first channel for receiving a guidewire, and having an outlet opening at the distal end of the one piece infusion catheter device;
• b. a second element, which is substantially tubular and made of a flexible but substantially non-expandable and substantially non-collapsible material, configured to define a second channel for receiving an infusion liquid, and one or more infusion orifices passing through the outer wall of the second element in order to infuse the infusion liquid from the second channel to an outside of the one piece infusion catheter device;
• wherein the first element is arranged with an axis parallel to the longitudinal axis X-X of the one piece infusion catheter device to have a common wall with the second element of the one piece infusion catheter device, whilst the second element is defined by the outer wall of the one piece infusion catheter device, thereby defining the second channel between the second element and the first element,
• wherein said one piece infusion catheter device further comprises, at a distal end, on said outer wall, the one or more infusion orifices for the infusion liquid, and, upstream from the one or more infusion orifices, on said catheter outer wall, at least one temporary obturating element having a rest non obturating position and a working obturating position for temporary obturating said conduit, wherein when the one piece infusion catheter device is introduced into the conduit, said at least one temporary obturating element is spaced apart from the one or more infusion orifices a distance sufficient to be located upstream of, or inside, said obstruction or occlusion in the conduit and the one piece infusion catheter device is configured to perform the infusion of the infusion liquid in a direction substantially perpendicular to said longitudinal axis and only downstream from the at least one temporary obturating element and in the working obturating position and at least downstream from the obstruction or occlusion.