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US 2011/0257632 A1Published application
Device for administering liquid analgesics
AssigneeArchimedes Development Limited
InventorsJonathan Castile, Peter Watts, Alan Smith
Life of this patent
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AssigneeArchimedes Development Limited
InventorsJonathan Castile, Peter Watts, Alan Smith
Estimating the term…
In the field of pain relief and treatment there is a need for a device which is able to administer several predetermined doses of an opioid analgesic in a manner which can be done simply and safely by a patient or carer; in particular in a manner which minimises the risk of administering too great a dose at any one time. A device (10), for administering a predefined number (N) of predefined volume unit doses (Vu) of an opioid analgesic in liquid form, includes a closed container (12) which contains a predetermined fill volume (Vf) of the opioid analgesic, and a dispenser (14) that is connected to the container (12). The dispenser (14) is operable to administer an individual one volume unit dose (Vu) repeatedly said predefined number of times (N). Both the dispenser (14) is adapted, and the concentration of said opioid analgesic is chosen such that said volume unit dose is in the range 0.05 to 0.15 ml.
1-13. (canceled)
A device for administering a predefined number (N) of predefined volume unit doses (Vu) of an opioid analgesic in liquid form drawn from a container containing a plurality of volume unit doses of the opioid analgesic, the device including a closed container containing a predetermined fill volume (Vf) of the opioid analgesic and a dispenser connected to the container, the dispenser being operable to administer an individual one volume unit dose (Vu) repeatedly said predefined number of times (N), both the dispenser being adapted and the concentration of said opioid analgesic being chosen such that said volume unit dose is in the range 0.05 to 0.15 ml, wherein the dispenser includes counting means operable to count the number of one volume unit doses administered and further includes dispenser deactivating means which is operated by the counting means to prevent further administration of the drug by the dispenser when the counting means has counted said predefined number of times (N).
A device according to claim 13 wherein the container has an internal/external volume ratio in the range of 0.15 to 0.9.
Dependencies are inferred from the claim text.