Time dependent drug delivery apparatus
First Claim
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1. A drug delivery apparatus, comprising:
- a drug reservoir that stores a drug therein;
a temperature sensitive component that is at least one of the drug, the drug reservoir, or a power source that powers the drug delivery apparatus;
a temperature sensor in thermal communication with the temperature sensitive component to sense a temperature of the temperature sensitive component;
a transcutaneous device;
a pump coupled to the transcutaneous device to deliver the drug via the transcutaneous device; and
processor that;
(i) receives from the temperature sensor an initial sensed temperature of the temperature sensitive component prior to initial delivery of the drug,(ii) calculates a time delay for the temperature sensitive component to reach, starting from the initial sensed temperature, a predetermined working temperature that is between 100 C and 37°
C., and(iii) initiates initial delivery of the drug by the drug delivery apparatus following expiration of the calculated time delay, regardless of the temperature of the temperature sensitive component following expiration of the calculated time delay.
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Abstract
A drug delivery apparatus provides autonomous variable rate delivery of a substance. In some embodiments, the delivery apparatus may be programmable. In some embodiments, the delivery apparatus may be disposable. Optionally the rate of delivery may be dependent on a temperature of a component of the apparatus. Optionally, there may be a time delay between activation of the apparatus and delivery power of the substance.
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Citations
20 Claims
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1. A drug delivery apparatus, comprising:
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a drug reservoir that stores a drug therein; a temperature sensitive component that is at least one of the drug, the drug reservoir, or a power source that powers the drug delivery apparatus; a temperature sensor in thermal communication with the temperature sensitive component to sense a temperature of the temperature sensitive component; a transcutaneous device;
a pump coupled to the transcutaneous device to deliver the drug via the transcutaneous device; andprocessor that; (i) receives from the temperature sensor an initial sensed temperature of the temperature sensitive component prior to initial delivery of the drug, (ii) calculates a time delay for the temperature sensitive component to reach, starting from the initial sensed temperature, a predetermined working temperature that is between 100 C and 37°
C., and(iii) initiates initial delivery of the drug by the drug delivery apparatus following expiration of the calculated time delay, regardless of the temperature of the temperature sensitive component following expiration of the calculated time delay. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A portable drug delivery apparatus configured to be attached against the skin of a recipient for delivering a drug to the recipient, comprising:
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a temperature sensitive component that is at least one of a drug to be delivered to the recipient or a power source that powers the drug delivery apparatus; a temperature sensor in thermal communication with the temperature sensitive component to sense a temperature of the temperature sensitive component; a transcutaneous device;
a pump coupled to the transcutaneous device to deliver the drug via the transcutaneous device; anda processor that; (i) receives from the temperature sensor an initial sensed temperature of the temperature sensitive component prior to initial delivery of the drug, (ii) calculates a time delay for the temperature sensitive component to reach, starting from the initial sensed temperature and based a heat transfer from at least one of the skin of the recipient and air in proximity to the drug delivery device to the temperature sensitive component, a predetermined working temperature that is between 10°
C. and 40°
C., and(iii) initiates initial delivery of the drug by the drug delivery apparatus following expiration of the calculated time delay, regardless of the temperature of the temperature sensitive component following expiration of the calculated time delay. - View Dependent Claims (18, 19, 20)
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Specification