title: Balloon catheter with a calibrated leak. A new system for superselective angiography and occlusive catheter therapy.
abstract: Problems with the use of the diagnostic angiography catheter as a therapeutic tool relate to difficulty in placing the catheter precisely in the desired area and controlling the infusion of the occluding agent. The author describes a soft microcatheter which has been developed to overcome these problems. The catheter ends in a balloon tip and thus can be flow-directed. To overcome the traditional difficulties of flow-guided catheters and the need for a double lumen, a calibrated leak in the balloon allows distal fluid delivery while the balloon remains inflated.
mesh_terms: D000368:Aged; D000792:Angiography / Q000379:methods*; D000818:Animals; D002339:Carotid Arteries / Q000000981:diagnostic imaging; D002404:Catheterization / Q000295:instrumentation*; D002648:Child; D004285:Dogs; D004621:Embolization, Therapeutic / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D012077:Renal Artery / Q000000981:diagnostic imaging; D012828:Silicones; D012886:Skull / Q000000981:diagnostic imaging; D013788:Thalamus / Q000000981:diagnostic imaging; D014711:Vertebral Artery / Q000000981:diagnostic imaging
chemical_list: D012828:Silicones