| 摘要 |
<p>The process includes manoeuvring a valve (15) in the canal (13) of the injector (1) , using a gripping device (22) fixed to the head (2') of the injector nozzle (2) in such a manner as to block the canal, after injection of the treatment product, while withdrawal of this injector nozzle. The valve (15) is of an acutely conical shape elongated by a stem (16) facing the mouth (10) of the injector, which can be gripped by the gripping device and the internal wall of the cylindrical body. The head of the injector nozzle has a hollow cylindrical body (21) at whose interior is fixed the gripping member, with passage (23) for the treatment product being arranged between the gripping member and the interior wall of the body.</p> |
