| 摘要 |
A device 100 for dosing and pressure adjusting of a radiopaque agent, and, in particular, of carbon dioxide, while performing angiography, is supplied at a predefined pressure, slightly higher with respect to the environment pressure, from a source 1, with the supplying means 2 enabled, through a supply pipe 3. The device 100 includes first dosing means 10, connected to the supply pipe 3 and aimed at withdrawing measured amounts of carbon dioxide from the source 1. A first reservoir 15 is connected to the first dosing means 10 by a first flow diverter 5, and contains a predefined amount of carbon dioxide to be supplied to an injection catheter 50. The device 100 includes also a second reservoir 25, connected to filling/draining means 6. The first reservoir 15 and second reservoir 25 have a common surface 20, soft or mobile, aimed at facilitating the gas pressure balance in the reservoirs. An output pipe 16 sets the first reservoir 15 and the injection catheter 50 in fluid communication, by means of a second flow diverter 7. |
