Patent ID: 11911052
Assignee: TERUMO KABUSHIKI KAISHA
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 15:
16. A treatment method for a patient having a lesion area in a lower limb artery, the patient having one arm and an other arm, the method comprising:
introducing a first catheter into an artery of the one arm of the patient and advancing the first catheter to approach the lesion area from above the lesion area and to position a distal portion of the first catheter upstream of the lesion area in the lower limb artery;
introducing a second catheter into an artery of the other arm of the patient and advancing the second catheter to approach the lesion area from above the lesion area;
disposing a balloon catheter adjacent the lesion area through the first catheter;
treating the lesion area with the balloon catheter while the distal portion of the first catheter is upstream of the lesion area, the treating of the lesion area with the balloon catheter comprising expanding a balloon of the balloon catheter so that the balloon expands into contact with the lesion area;
assisting the treating of the lesion area: i) with the second catheter while the distal portion of the second catheter is upstream of the lesion area; and ii) with a treatment catheter that is inserted into the second catheter while the distal portion of the second catheter is upstream of the lesion area; and
the assisting of the treating of the lesion area with the second catheter comprising creating suction in the second catheter and/or the treatment catheter while the distal portion of the first catheter and the distal portion of the second catheter are positioned in side-by-side relation to one another and are both facing in a common direction toward the lesion area, the creating of the suction in the second catheter and/or the treatment catheter occurring while the balloon is in contact with the lesion area, the suction being performed to draw into the second catheter and/or the treatment catheter emboli or cholesterol crystals that are produced by the balloon contacting the lesion area and that are located between the balloon in contact with the lesion area and an open distal end of the second catheter.