Surgery – Respiratory method or device – Means for mixing treating agent with respiratory gas
Patent
1997-04-01
2000-05-02
Weiss, John G.
Surgery
Respiratory method or device
Means for mixing treating agent with respiratory gas
12820312, 12820021, 12820019, 12820323, 222193, 222189, A61M 1100
Patent
active
060559799
ABSTRACT:
A dosing device (17) for the medical administration of powder (16) through the nose or mouth has a valve body (27) which is movable in a discharge channel (22) between two valve seats (25, 26). During suction, the spherical valve body (27) is raised from the lower, container-sealing valve seat (26) and moved by a flow drag to the upper valve seat (25), so that it closes the discharge channel (22) and terminates dosing. The formation of the air/powder dispersion can be assisted in that the air subsequently sucked into the container is directed onto or into a powder supply or to a powder receiver in a pre-chamber fillable by tilting the device for pre-dosing.
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German search report dated Dec. 5, 1996 in German Appl. No. 196 13 185.5.
Ing. Erich Pfeiffer GmbH
Srivastava V.
Weiss John G.
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