Ambulatory infusion device
AssigneeRoche Diabetes Care, Inc.
InventorsKurt Friedli, Michael Deppert, Michael Lambertson, Christian Würtele
Life of this patent
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Abstract
Disclosed is an ambulatory infusion device, including a control unit and an electroacoustic transducer. The control unit is configured to operate the electroacoustic transducer as noise emitter or to operate the electroacoustic transducer as noise receiver and to determine from a received noise that is received by the electroacoustic transducer a state of the ambulatory infusion device.
Claims25
An ambulatory infusion device, comprising:
- a) an electroacoustic transducer;
- and
- b) a controller configured to operate the electroacoustic transducer as a noise emitter, and alternatively, as a noise receiver, and to determine from a drive noise generated by a motor and received by the electroacoustic transducer a state of the ambulatory infusion device, the controller further configured to:
- i) evaluate operation time of one or more drives of the device using the drive noise received during drug administration and comparing the operation time with an expected operation time,
- ii) detect an unexpected interruption in the drive noise,
- iii) detect an increased overall noise level of the drive noise, and/or
- iv) evaluate the drive noise to determine rotation direction of the drive;
- wherein the transducer comprises hardware that operates as both the receiver and the emitter.
A method for operating an electroacoustic transducer that is part of an ambulatory infusion device, the method including:
- a) operating the electroacoustic transducer as a noise emitter to emit an emitted noise;
- and
- b) operating the electroacoustic transducer as a noise receiver and determining a functional state of the ambulatory infusion device from a drive noise generated by a motor and received by the electroacoustic transducer;
- c) using a controller to:
- i) evaluate operation time of one or more drives of the device using the drive noise received during drug administration and comparing the operation time with an expected operation time,
- ii) detect an unexpected interruption in the drive noise,
- iii) detect an increased overall noise level of the drive noise, and/or
- iv) evaluate the drive noise to determine rotational direction of the drive;
- wherein the transducer comprises hardware that operates as both the receiver and the emitter.
An extracorporeal ambulatory infusion device, comprising:
- a) a control unit, wherein the control unit includes a noise generator module, an evaluation module and a switching module;
- b) an electroacoustic transducer;
- wherein the control unit is configured to:
- operate the electroacoustic transducer as a noise emitter, wherein the switching module operatively connects the electroacoustic transducer with the noise generator module;
- and
- operate the electroacoustic transducer alternatively as a noise receiver, wherein the switching module operatively connects the electroacoustic transducer with the evaluation module, wherein the evaluation module is configured to determine from a drive noise from a motor and received by the electroacoustic transducer a state of the ambulatory infusion device.
Dependencies are inferred from the claim text.