The medical applications of butyl cyanoacrylate include its use as an adhesive for lacerations of the skinand in the treatment of bleeding from vascular structures.
Butyl cyanoacrylate is used in gastroenterology to treat bleeding gastric varices, which are dilated veins that occur in the setting of liver cirrhosis or thrombosis of the splenic vein. They are injected with a catheter needle inserted into the varix through the endoscope.
Butyl esters provide a stronger bond, but the glue is rigid. It is a clear colourless liquid with a sharp, irritating odour.