Method and medical device for adjusting dose of fluid medicament

• US 9,707,345 B2
• Filed: 11/21/2012
• Issued: 07/18/2017
• 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
• Primary Examiner(s): Hayman, Imani
• Assistant Examiner(s): Ponton, James D
• Application Number:
  US14/359,858
• Publication Number:
  US 20150025493A1
• Time in Patent Office: 1,700 Days
• 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. 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 second fluid, a fluid element connected to said first reservoir and said second reservoir and through which said first fluid medicament is to be ejected, and a control unit, the method comprising:

receiving, by the control unit, information about a desired dose of said first fluid medicament to be ejected,

in response to receiving the information about the desired dose of said first fluid medicament, the control unit receiving information about a content of said fluid element,

wherein the information about said content of said fluid element comprises at least one of an amount of first fluid medicament remaining in the fluid element after a previous ejection from said first reservoir and an amount of second fluid remaining in the fluid element after a previous ejection from said second reservoir,

automatically adjusting said desired dose to an adjusted dose to be ejected from said first reservoir based at least in part on said information about the content of said fluid element, wherein the adjustment is performed by the control unit, and

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

2. The method according to claim 1, wherein information about said content of said fluid element is also based at least in part on a last priming and subsequent ejections.

3. The method according to claim 1, wherein information about said content of said fluid element is also based at least in part on a time elapsed since a last ejection.

4. The method according to claim 1, wherein information about said content of said fluid element is also based at least in part on a temperature of said medical device.

5. The method according to claim 1, wherein information about said content of said fluid element is also based at least in part on a movement of said medical device.

6. The method according to claim 1, wherein information about said content of said fluid element is also based at least in part on properties of the first fluid medicament and/or the second fluid.

7. The method according to claim 1, wherein said information about said content of said fluid element is also determined based at least in part on calculation.

8. The method according to claim 1, wherein said medicament of said first reservoir and said second fluid of said second reservoir are ejected one after another.

9. The method according to claim 1, wherein said second fluid in said second reservoir contains a mixture of said first fluid medicament and a second medicament.

10. The method according to claim 1, further comprising:

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

11. The method according to claim 10, further comprising:

adjusting said supplementary dose of said second fluid from said second reservoir

at least in part on said information about said content of said fluid element before ejection of said supplementary dose.

12. A medical device, comprising:

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

a fluid element connected to said first reservoir and said second reservoir and through which said first fluid medicament is to be ejected, 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, in response to receiving the information about the desired dose of said first fluid medicament, receive information about a content of said fluid element,

wherein the information about said content of said fluid element comprises at least one of an amount of first fluid medicament remaining in the fluid element after a previous ejection from said first reservoir and an amount of second fluid remaining in the fluid element after a previous ejection from said second reservoir,

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

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

13. The medical device according to claim 12, wherein said medical device is a portable medical device.

14. The medical device according to claim 13, wherein said portable medical device comprises a pen for injecting insulin or an infusion pump.