METHOD OF PREPARATION AND SUPPLY OF A DOSE OF A GASTRY CONTRAST AGENT FOR ANGIOGRAPHY AND DEVICE THAT UPDATES SUCH METHOD

摘要

the present invention the device (100) for preparing and delivering a dose of gaseous contrast agent for angiography operates in an apparatus for injecting said contrast agent. the device (100) includes: a supply line (3); a pressure regulator (2); a soft injection pouch (4), in fluid communication with the supply line (3) and with a catheter (50). the device (100) also includes pressing means (10), which include a pair of clamping plates (15a, 15b) of the injection bag (4), arranged on opposite sides with respect to the injection bag (4), movable away and close to each other, and also including a pair of compression bags (11a, 11b) that can be inflated with compressed air. the compression bags (11a, 11b) are designed to act on the corresponding holding plates (15a, 15b) to force them to move close to each other and thus to compress the injection bag (4). according to the method of the invention, the injection bag (4) is filled from the source (1) through the pressure regulator (2) and a load container (5) of constant volume, and the contrast agent is supplied from the injection bag (4) gradually compressing the latter.