APPARATUS AND METHOD FOR PORTABLE LIQUID DRUG DELIVERY
First Claim
1. An apparatus comprising:
- a cartridge comprising a liquid drug reservoir configured to hold a liquid drug and a volatile liquid reservoir configured to hold a volatile liquid, the cartridge configured so that vaporization of at least some of the volatile liquid creates a flow of the liquid drug out of the liquid drug reservoir;
a flow sensor configured to monitor the flow of the liquid drug;
a liquid valve configured to regulate the flow of the liquid drug; and
an insertion unit configured to deliver the liquid drug to a person.
1 Assignment
0 Petitions
Accused Products
Abstract
An apparatus includes a cartridge having a liquid drug reservoir configured to hold a liquid drug and a volatile liquid reservoir configured to hold a volatile liquid. The cartridge is configured so that vaporization of at least some of the volatile liquid creates a flow of the liquid drug out of the liquid drug reservoir. The apparatus also includes a flow sensor configured to monitor the flow of the liquid drug, a liquid valve configured to regulate the flow of the liquid drug, and an insertion unit configured to deliver the liquid drug to a person. The cartridge may also include a vaporized gas chamber configured to hold the gas. The gas in the vaporized gas chamber expands and pushes the liquid drug out of the liquid drug reservoir.
19 Citations
20 Claims
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1. An apparatus comprising:
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a cartridge comprising a liquid drug reservoir configured to hold a liquid drug and a volatile liquid reservoir configured to hold a volatile liquid, the cartridge configured so that vaporization of at least some of the volatile liquid creates a flow of the liquid drug out of the liquid drug reservoir; a flow sensor configured to monitor the flow of the liquid drug; a liquid valve configured to regulate the flow of the liquid drug; and an insertion unit configured to deliver the liquid drug to a person. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A system comprising:
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a delivery pump comprising; a disposable cartridge comprising a liquid drug reservoir configured to hold a liquid drug, a volatile liquid reservoir configured to hold a volatile liquid, and a vaporized gas chamber, the vaporized gas chamber configured to hold gas formed by vaporization of at least some of the volatile liquid so that the gas in the vaporized gas chamber creates a flow of the liquid drug from the liquid drug reservoir; a flow sensor configured to monitor the flow of a liquid drug; a liquid valve configured to regulate the flow of the liquid drug; and an insertion unit configured to deliver the liquid drug to a person; and a monitoring unit configured to monitor a condition of the person. - View Dependent Claims (15, 16, 17)
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18. A method comprising:
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creating a liquid drug flow using a vaporized gas; monitoring a flow rate of the liquid drug flow; adjusting a valve opening of a valve for the liquid drug flow based on a difference between the monitored flow rate and a programmed rate; and delivering the liquid drug flow from the valve opening to a person. - View Dependent Claims (19, 20)
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Specification