Ambulatory infusion device with sensor testing unit
First Claim
1. An ambulatory infusion device for infusion of a liquid drug into a patient'"'"'s body over an extended period of time, the ambulatory infusion device comprising:
- a sensor assembly having a sensor, wherein the sensor assembly produces a sensor assembly output based on an infusion characteristic of the ambulatory infusion device and based on a supply voltage/current;
a supply unit, wherein the supply unit is coupled to the sensor and generates the supply voltage/current; and
a sensor testing unit which detects a failure of the sensor assembly, wherein the sensor testing unit is coupled to the sensor assembly and the supply unit, and the sensor testing unit carries out a sensor testing sequence, the sensor testing sequence comprising;
controlling the supply unit so as to produce a variation of the supply voltage/current, anddetermining whether the variation of the supply voltage/current produces a corresponding variation of the sensor assembly output.
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Accused Products
Abstract
An ambulatory infusion device for infusion of a liquid drug into a patient'"'"'s body over an extended period of time and methods thereof are disclosed. The device includes a sensor assembly, which produces a sensor assembly output based on an infusion characteristic of the ambulatory infusion device and based on a supply voltage/current, and a supply unit which is coupled to a sensor of the sensor assembly and generates the supply voltage/current. A sensor testing unit detects a failure of the sensor assembly, wherein the sensor testing unit is coupled to the sensor assembly and the supply unit, and the sensor testing unit carries out a sensor testing sequence. The sensor testing sequence includes controlling the supply unit so as to produce a variation of the supply voltage/current, and determining whether the variation of the supply voltage/current produces a corresponding variation of the sensor assembly output.
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Citations
20 Claims
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1. An ambulatory infusion device for infusion of a liquid drug into a patient'"'"'s body over an extended period of time, the ambulatory infusion device comprising:
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a sensor assembly having a sensor, wherein the sensor assembly produces a sensor assembly output based on an infusion characteristic of the ambulatory infusion device and based on a supply voltage/current; a supply unit, wherein the supply unit is coupled to the sensor and generates the supply voltage/current; and a sensor testing unit which detects a failure of the sensor assembly, wherein the sensor testing unit is coupled to the sensor assembly and the supply unit, and the sensor testing unit carries out a sensor testing sequence, the sensor testing sequence comprising; controlling the supply unit so as to produce a variation of the supply voltage/current, and determining whether the variation of the supply voltage/current produces a corresponding variation of the sensor assembly output. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for detecting a failure of a sensor assembly of an ambulatory infusion device, wherein the sensor assembly comprises a sensor and produces a sensor assembly output based on an infusion characteristic of the ambulatory infusion device and based on a supply voltage/current coupled to the sensor, the method comprising:
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producing a variation of the supply voltage/current, and determining whether the variation of the supply voltage/current produces a corresponding variation of the sensor assembly output. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification