Method and Medical Device for Adjusting Dose of Fluid Medicament

• US 20150025493A1
• Filed: 11/21/2012
• Published: 01/22/2015
• Est. Priority Date: 11/23/2011
• Status: Active Grant

• Current Assignee: Sanofi-Aventis Deutschland GmbH (Sanofi )
• Original Assignee: Sanofi-Aventis Deutschland GmbH (Sanofi )
• Inventors: Eggert, Ilona, Caspers, Michael, De Sausmarez Lintell, Daniel Thomas
• Granted Patent: US 9,707,345 B2
• Time in Patent Office: Days
• US Class Current: 604/500
• CPC Class Codes: A61M 2005/1402 Priming
• CPC Class Codes: A61M 2005/14208 with a programmable infusion control system, characterised by the infusion program
• CPC Class Codes: A61M 5/142 Pressure infusion, e.g. using pumps
• CPC Class Codes: A61M 5/2066 comprising means for injection of two or more media, e.g. by mixing
• CPC Class Codes: A61M 5/2448 comprising means for injection of two or more media, e.g. by mixing
• CPC Class Codes: A61M 5/31535 Means improving security or handling thereof, e.g. blocking means, means preventing insufficient dosing, means allowing correction of overset dose
• CPC Class Codes: A61M 5/31545 Setting modes for dosing

Abstract

The invention relates to a method for delivering at least one fluid medicament from a medical device. The invention also relates to a medical device. The technical problem of improving the dose accuracy is solved by a method for delivering at least one fluid medicament from a medical device comprising a first reservoir containing a first fluid medicament, a second reservoir containing a fluid, and a fluid element connected to said first reservoir and said second reservoir. The method comprises receiving information about a desired dose of the first fluid medicament to be ejected, adjusting said dose to be ejected from said first reservoir based at least in part on information about a content of said fluid element, and ejecting said adjusted dose from said first reservoir through said fluid element. The technical problem is further solved by a medical device configured to work according to the method.

Claims

1-15. -15. (canceled)

16. Method for delivering at least one fluid medicament from a medical device comprising a first reservoir containing a first fluid medicament, a second reservoir containing a fluid, and a fluid element connected to said first reservoir and said second reservoir, the method comprising:

receiving information about a desired dose of said first fluid medicament to be ejected,

adjusting said dose to be ejected from said first reservoir based at least in part on information about a content of said fluid element, and

ejecting said adjusted dose from said first reservoir through said fluid element.

17. Method according to claim 16, further comprising:

ejecting a supplementary dose of said fluid from said second reservoir.

18. Method according to claim 17, further comprising:

adjusting said supplementary dose of said fluid from said second reservoir based at least in part on said information about said content of said fluid element before ejection.

19. Method according to claim 16, wherein information about said content of said fluid element is based at least in part on a previous ejection from said first reservoir and/or said second reservoir.

20. Method according to claim 16, wherein information about said content of said fluid element is based at least in part on a last priming and subsequent ejections.

21. Method according to claim 16, wherein information about said content of said fluid element is based at least in part on a time elapsed since the last ejection.

22. Method according to claim 16, wherein information about said content of said fluid element is based at least in part on a temperature of said medical device.

23. Method according to claim 16, wherein information about said content of said fluid element is based at least in part on a movement of said medical device.

24. Method according to claim 16, wherein information about said content of said fluid element is based at least in part on properties of the first fluid medicament and/or the fluid.

25. Method according to claim 16, wherein said information about said content of said fluid element is determined based at least in part on a look-up table.

26. Method according to claim 16, wherein said information about said content of said fluid element is determined based at least in part on calculation.

27. Method according to claim 16, wherein said medicament of said first reservoir and said fluid of said second reservoir are ejected one after another.

28. Method according to claim 16, wherein said fluid in said second reservoir contains a mixture of said first fluid medicament and a second medicament.

29. Medical device, in particular for performing the method according to claim 16, comprising:

a first reservoir containing a first fluid medicament and a second reservoir containing a fluid,

a fluid element connected to said first reservoir and said second reservoir, and

a control unit,

wherein the control unit is configured to receive information about a desired dose of said first fluid medicament to be ejected,

wherein the control unit is further configured to adjust said dose to be ejected from said first reservoir based at least in part on information about a content of said fluid element, and

wherein said first reservoir, said second reservoir and said fluid element are configured to eject the adjusted dose.

30. Medical device according to claim 29, wherein said medical device is a portable medical device, in particular a pen for injecting insulin, or an infusion pump.