New percutaneous transluminal coronary angioscope

摘要: Abstract A new percutaneous transluminal coronary angioscopic catheter has been developed for visualization of the artery. specially made balloon, fixed at tip, and an angulation mechanism a precise coaxial alignment possible in lumen. This catheter, 1.22 mm outer diameter, four channels, one irrigation which 0.36 (0.014 in.) angioplasty guide wire can be used. With use this angioscope, lumens 8 dogs, thrombi that were produced with copper coils left anterior descending artery 11 atherosclerotic arteries 20 patients during cardiac catheterization sequence 1 patient observed. The was introduced into by 8F catheter. steerable enabled to accurately safely inserted target lesion all cases. inflated balloon allowed curved lumen atheroma seen limited volume fluid. Visualization good (complete inner lumen) 46% (10 22 lesions), moderate (visualization >50% 36% (8 lesions) poor These preliminary experiences closed chest dogs humans indicate feasibility angioscope. information yielded angioscopy may clinically useful study pathophysiologic changes disease are not detected arteriography.