Visualization and recording of intravascular details by fiberoptic angioscopy: the Sumida cardioangioscope.
Direct selective observation of the intravascular lumen through a catheter cardioangioscope provides accurate diagnostic information that facilitates the detection and treatment of vascular diseases. The Sumida-cardioangioscope is approximately 0.75 to 2.4 mm in diameter and consists of at least 3,000-6,000 delicate glass fibers, each measuring 4.8-5.5 micron and fused into a long flexible 75 to 130 cm tube. The cardioangioscope has the following components: (1) a scope connected to a camera; (2) a lightguide, consisting of 80-500 fibers, measuring 30-50 micron in diameter, and a 75-watt xenon lamp; (3) a transport channel for saline or drug solution; (4) an inflatable cuff; and (5) a handle to manipulate the catheter tip. The abdominal aorta in living dogs and the coronary arteries, aortic valves, abdominal-iliac, femoral and popliteal arteries, abdomino-iliac bifurcation, and venous system were clearly observed and recorded on videotape, 16-mm movie film and 35-mm photographic film. Angioplasty by balloon and laser ablation are possible applications.
Sumida
S
S
Department of Cardiovascular Surgery, National Fukuoka Central Hospital, Japan.
Masuda
M
M
Furuyama
M
M
D000293:Adolescent; D000818:Animals; D001808:Blood Vessels / Q000033:anatomy & histology*; D006328:Cardiac Catheterization / Q000295:instrumentation*; D004285:Dogs; D019723:Endoscopes; D004867:Equipment Design; D005336:Fiber Optic Technology; D006801:Humans; D008297:Male