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A medicament dispenser that includes a medicament supply, an ejector, and a controller configured to actuate the ejector, where the controller is configured to use an operational parameter to produce a plurality of medicament drops having a target drop characteristic, and the operational parameter i

A medicament dispenser that includes a medicament supply, an ejector, and a controller configured to actuate the ejector, where the controller is configured to use an operational parameter to produce a plurality of medicament drops having a target drop characteristic, and the operational parameter includes a correction factor that is based on a performance characteristic of the ejector.

대표청구항 ▼

What is claimed is: 1. A medicament dispenser, comprising: a medicament supply; an ejector having a performance characteristic, the ejector being in fluid communication with the medicament supply; an accumulator for storing medicament in fluid communication with the ejector; a sensor configured to

What is claimed is: 1. A medicament dispenser, comprising: a medicament supply; an ejector having a performance characteristic, the ejector being in fluid communication with the medicament supply; an accumulator for storing medicament in fluid communication with the ejector; a sensor configured to sense medicament pressure within the accumulator; a valve intermediate the medicament supply and the accumulator, the valve configured to open and close in response to a sensed medicament pressure within the accumulator to regulate medicament pressure at the ejector; and a controller configured to actuate the ejector using an operational parameter to produce a plurality of medicament drops having target drop characteristics, the operational parameter including a correction factor based on the performance characteristic of the ejector. 2. The medicament dispenser of claim 1, further comprising a compliant member that regulates pressure within the accumulator. 3. The medicament dispenser of claim 1, wherein the controller is configured to operate the valve to increase the medicament pressure within the accumulator. 4. The medicament dispenser of claim 1, wherein the performance characteristic of the ejector includes ejected drop volume. 5. The medicament dispenser of claim 1, wherein the performance characteristic of the ejector includes ejected drop weight. 6. The medicament dispenser of claim 1, wherein the operational parameter includes drop ejection frequency. 7. The medicament dispenser of claim 1, wherein the operational parameter includes number of drops ejected. 8. The medicament dispenser of claim 1, wherein the operational parameter includes medicament pressure. 9. The medicament dispenser of claim 1, wherein the operational parameter includes ejector temperature. 10. The medicament dispenser of claim 1, wherein the operational parameter includes a static correction factor. 11. The medicament dispenser of claim 1, wherein the operational parameter includes a dynamic correction factor. 12. An inhaler, comprising: a medicament supply; a medicament accumulator for storing medicament in fluid communication with the medicament supply; a compliant member fluidically coupled to the medicament accumulator; a valve intermediate the medicament supply and the medicament accumulator; a sensor configured to sense a medicament pressure within the medicament accumulator; an ejector in fluid communication with the medicament accumulator, wherein the ejector has a performance characteristic; and a controller configured to apply a correction factor to an operational parameter of the ejector, wherein the correction factor is determined by the performance characteristic of the ejector. 13. A method of calibrating a medicament inhaler to a target output characteristic, the medicament inhaler having a medicament supply, a medicament accumulator for storing medicament in fluid communication with the medicament supply, a sensor configured to sense medicament pressure within the accumulator, a valve intermediate the medicament supply and the medicament accumulator, a medicament ejector in fluid communication with the medicament accumulator, and a controller configured to open and close the valve in response to a sensed medicament pressure within the accumulator, the method comprising: manufacturing the medicament inhaler; characterizing the output of the inhaler; comparing the characterized output to the target output characteristic; determining a correction factor to produce the target output from the inhaler; and configuring the controller to apply the correction factor to the inhaler. 14. The method of claim 13, wherein characterizing the output of the inhaler includes determining an ejected drop weight. 15. The method of claim 14, wherein characterizing the output of the inhaler includes determining the ejected drop weight as a function of drop frequency. 16. The method of claim 14, wherein characterizing the output of the inhaler includes determining the ejected drop weight as a function of medicament ejector temperature. 17. The method of claim 13, wherein comparing the characterized output to the target output characteristic includes comparing a determined ejected drop weight to a target drop weight. 18. The method of claim 13, wherein determining a correction factor includes determining a corrected drop weight. 19. The method of claim 13, wherein configuring the controller to apply the correction factor to the inhaler includes configuring the controller to apply a static correction factor. 20. The method of claim 13, wherein configuring the controller to apply the correction factor to the inhaler includes configuring the controller to apply a dynamic correction factor. 21. The method of claim 13, wherein configuring the controller to apply the correction factor to the inhaler includes configuring the controller to apply a corrected drop ejection frequency. 22. The method of claim 13, wherein configuring the controller to apply the correction factor to the inhaler includes configuring the controller to apply a corrected number of drops ejected. 23. The method of claim 13, wherein configuring the controller to apply the correction factor to the inhaler includes configuring the controller to apply a corrected medicament fluid pressure. 24. The method of claim 13, wherein configuring the controller to apply the correction factor to the inhaler includes configuring the controller to apply a corrected ejector temperature. 25. The method of claim 24, wherein configuring the controller to apply the corrected ejector temperature includes configuring the controller to apply a corrected drop ejection frequency. 26. An inhaler, comprising: a means for supplying fluid medicament; a means for ejecting fluid medicament, the means having a performance characteristic; a means for accumulating and storing fluid medicament in fluid communication with the ejector means; a means for sensing fluid medicament pressure within the accumulating means; a means for regulating an addition of medicament to the accumulating means from the fluid medicament supply means in response to the pressure sensing means; and a means for actuating the ejector means using an operational parameter calculated from the performance characteristic of the ejector means.