Control unit for flow regulation
First Claim
1. Control unit for flow regulation for use in an apparatus for testing the delivery of a dose of powder from a powder inhaler, containinga first valve controllable by a time switch,a time switch for controlling the first valve,a connector connected to the first valve and allowing air to pass through,a throughflow control valve connected to the connector,a connector for a suction device provided on the first valve,a connector for a collecting tube or an impactor, provided on the throughflow control valve, andmeans for measuring the airflow volume through the collecting tube or an impactor,two connecting points for a pressure gauge provided in front of and behind the throughflow control valve in the direction of suction,pressure measuring gauges each mounted at the connecting point via a connecting member, wherein the connecting members include an inner capillary which carries the air and an outer tube which encases the capillary.
2 Assignments
0 Petitions
Accused Products
Abstract
The invention relates to a control unit for flow regulation for use in an apparatus for testing the delivery of a dose of powder from a powder inhaler, a collecting tube for use in conjunction with the control unit and an apparatus containing the control unit and the collecting tube.
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Citations
6 Claims
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1. Control unit for flow regulation for use in an apparatus for testing the delivery of a dose of powder from a powder inhaler, containing
a first valve controllable by a time switch, a time switch for controlling the first valve, a connector connected to the first valve and allowing air to pass through, a throughflow control valve connected to the connector, a connector for a suction device provided on the first valve, a connector for a collecting tube or an impactor, provided on the throughflow control valve, and means for measuring the airflow volume through the collecting tube or an impactor, two connecting points for a pressure gauge provided in front of and behind the throughflow control valve in the direction of suction, pressure measuring gauges each mounted at the connecting point via a connecting member, wherein the connecting members include an inner capillary which carries the air and an outer tube which encases the capillary.
Specification