US 6,203,519 B1Granted

Insufflator assembly

AssigneeAstra Akiebolag

InventorsPer-Olof Fagerström, Ola Nerbrink, Henri Hansson, Marika Nilsson Eirefelt, Ingrid Erjefält

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Abstract

An insufflator assembly, comprising: an insufflator comprising a delivery component (1) for delivering powder into an airway of an animal, a metering component (3) for providing a dose of powder (P) to the delivery component (1) and an inlet for receiving a stream of gas; and means for providing a stream of gas to the inlet of the insufflator so as to carry the dose of powder (P) into the airway of the animal, the means comprising a chamber (45) of a predetermined volume for containing gas at a predetermined pressure above atmospheric, a pressurized gas source (9) for providing gas of a predetermined pressure to the chamber (45), a first valve (47) for selectively connecting the chamber (45) to the pressurized gas source (9) and a second valve (49) for selectively connecting the chamber (45) to the inlet of the insufflator.

Claims22

Dependent claims

An insufflator assembly, comprising:

an insufflator comprising a delivery component for delivering powder into an airway of an animal, and a metering component containing a predetermined dose of powder for delivery to the delivery component wherein the metering component comprises an inlet for receiving a stream of gas and an outlet connected to said delivery component;
and
a firing unit for providing a volume of pressurized gas to the inlet so as to carry the dose of powder into the airway of the animal wherein the firing unit comprises a chamber of a predetermined volume for containing gas at a predetermined pressure above atmospheric and the chamber comprises a first valve for selectively connecting the chamber to a pressurized gas source which provides gas and a second valve for selectively connecting the chamber to the inlet of the metering component, whereby both valves can be closed after said chamber has been filled with pressurized gas and said second valve can then be opened to deliver a predetermined volume of air through said metering component and said delivery component to deliver said dose of powder.

Dependencies are inferred from the claim text.