Angioplasty device

An angioplasty device for local widening of a narrowed segment of an internal lumen of a blood vessel including atheromatous deposits on walls of the blood vessel, comprising:

• a guide wire insertable into a blood vessel,
• a flexible tubular body extending along a longitudinal axis between a proximal end and a distal end and having a proximal part, which includes the proximal end, and a distal part, which includes the distal end, the tubular body comprising:
• an inflatable balloon arranged radially about the tubular body in the distal part, wherein the angioplasty balloon is such that an inflation of the angioplasty balloon in the narrowed segment of the blood vessel results in the internal lumen of the blood vessel being widened and the atheromatous deposits being compressed against the walls of the blood vessel;
• a first internal conduit extending parallel to the longitudinal axis at least in the distal part, to enable the insertion of the guide wire into the first conduit and the sliding of the tubular body along the guide wire;
• a second internal conduit extending parallel to the longitudinal axis and opening out at the proximal end and into the angioplasty balloon, to enable the injection of a fluid into the angioplasty balloon to inflate the angioplasty balloon;
• a third internal conduit opening out at the proximal end and into several injection orifices situated in the distal part, the first conduit being open radially into the third conduit, the second conduit being leaktight with respect to the first and third conduits, the third conduit having a cross-section dimension based on an amount and viscosity of a contrast agent to be injected therethrough in a patient's blood when the guide wire is in the first conduit.

An angioplasty device for local widening of a narrowed segment of an internal lumen of a blood vessel including atheromatous deposits on walls of the blood vessel, comprising:

• a guide wire insertable into a blood vessel,
• a flexible tubular body extending along a longitudinal axis between a proximal end and a distal end and having a proximal part, which includes the proximal end, and a distal part, which includes the distal end, the tubular body comprising:
• an inflatable balloon arranged radially about the tubular body in the distal part, wherein the angioplasty balloon is such that an inflation of the angioplasty balloon in the narrowed segment of the blood vessel results in the internal lumen of the blood vessel being widened and the atheromatous deposits being compressed against the walls of the blood vessel;
• a first leaktight internal conduit extending parallel to the longitudinal axis at least in the distal part, to enable the insertion of the guide wire into the first conduit and the sliding of the tubular body along the guide wire;
• a second internal conduit extending parallel to the longitudinal axis and opening outat the proximal end and into the angioplasty balloon, to enable the injection of a fluid into the angioplasty balloon to inflate the angioplasty balloon;
• a third internal conduit opening out at the proximal end and into one or more injection orifices situated in the distal part the one or more injection orifices including at least one proximal injection orifice situated between the proximal end and the angioplasty balloon and no injection orifice situated between the angioplasty balloon and the distal end, the first, second and third conduit being leaktight with respect to one another, the third conduit having a cross-section dimension based on an amount and viscosity of a contrast agent to be injected therethrough in a patient's blood when the guide wire is in the first conduit.