A device for administering powdered substances into deep-seated cavities of an organism includes a sprayer of powdered substances, a conveying line including a drainage pipe and a catheter, a hollow cylindrical body divided by a diametral partition and a cover, and a first sleeve positioned in the diametral...http://www.google.ca/patents/US4620847?utm_source=gb-gplus-sharePatent US4620847 - Device for administering powdered substances
