Back to results
US 7,604,006 B2Granted
Control unit for flow regulation
AssigneeBoehringer Ingelheim Pharma GmbH & Co. KG
InventorsHarald Wolf, Andreas Fachinger, Holger Memmesheimer
Life of this patent
Estimating the term…
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.
Claims6
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.
6 more elements
Dependencies are inferred from the claim text.