| 摘要 |
An atherectomy catheter device (10) includes an improved guidewire system includ ing a guidewire port member (16) secured to the distal tip portion (13) of the outer tubular member (12) of an at herectomy catheter of the coaxial type having large and small concentrically disposed elongated flexible tubular members (12, 15) wi th a rotating cutter member (18) fixed to the distal end of the inner tubular member (15). The guidewire (17) is spaced from t he cutter head (18) yet controls the cutter disposition relative to the vessel lumen of interest. The inner and outer tubular members (1 2, 15) are constructed simultaneously to provide flushing liquid and to aspirate the cutting site.
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