Patent ID: 6206871
Filing Date: 2001-03-27
Classification: A61M

Abstract:
A surgical method for percutaneous implantation of an arterial locoregional chemotherapy treatment system for metastases, comprising:providing an arterial catheter (1) made of a non-thrombogenic material and having a substantial length, and inserting said arterial catheter along an artery leading to a region to be treated, through an introduction opening (C),providing an infusion port (2) and implanting said infusion port in correspondence of a subcutaneous pocket-like cut (T) formed at a short distance from said introduction opening (C) of the arterial catheter,providing a tunneling assembly including a cannula needle (3) formed by a metal tubular inner stylet (4) having a tapered and beveled tip (5) and by an outer jacket (6) made of plastic material and adapted to be axially withdrawn from said inner stylet (4);a metal guide member (7) to be inserted through said outer jacket (6) of the cannula needle (3); anda tunneller device (8) formed by an inner tubular dilator (9) made of plastic material and by an outer tubular introduction element (10) made of plastic material, having a slightly tapered distal end (11) and a slightly countersunk proximal end (12), and relatively to which said inner tubular dilator (9) has an outer diameter substantially equal to the outer diameter of said arterial catheter (1) so as to prevent displacement of said catheter when implanted, creating, through said tunneling assembly, a tunnel between said introduction opening and said pocket-like cut and performing, via said tunnel, percutaneous connection between said arterial catheter and said infusion port.