FLUID INFUSION PATCH PUMP DEVICE WITH AUTOMATIC FLUID SYSTEM PRIMING FEATURE

• US 20150265768A1
• Filed: 03/18/2015
• Published: 09/24/2015
• Est. Priority Date: 03/24/2014
• Status: Active Grant

• Current Assignee: Medtronic Minimed Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Minimed Incorporated (Medtronic Plc)
• Inventors: Ng, Anthony C., Vazquez, Pablo, Yeung, Hubert K.
• Granted Patent: US 10,034,976 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61M 2005/1585 Needle inserters
• CPC Class Codes: A61M 5/142 Pressure infusion, e.g. using pumps
• CPC Class Codes: A61M 5/158 Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
• CPC Class Codes: A61M 5/162 Needle sets, i.e. connections by puncture between reservoir and tube ; Connections between reservoir and tube in jet-action syringes A61M5/30; connectors for tubes having sealed ends and a needle for piercing them A61M39/14
• CPC Class Codes: A61M 5/16804 Flow controllers

Abstract

A fluid infusion device and related operating methods are disclosed. The fluid infusion device has a housing, a fluid pump mechanism having an inlet and an outlet, a first flow path in fluid communication with the inlet and at least partially defined by structure compatible with fluid cartridge modules containing medication fluid, a second flow path in fluid communication with the outlet and terminating at a subcutaneous conduit for a body, and a drive motor that actuates the pump mechanism. An exemplary operating method detects a first installation of a fluid cartridge module in the housing. The detecting occurs after the housing has been affixed to the body and after the subcutaneous conduit has been inserted into the body. In response to the detecting, the operating method initiates an automatic priming operation to prepare the device for delivery of the medication fluid to the body.

Claims

1. A fluid infusion device for delivering a medication fluid to a body, the fluid infusion device comprising:

a housing that receives a fluid cartridge module containing the medication fluid;

a fluid pump mechanism within the housing, the fluid pump mechanism comprising an inlet and an outlet;

a first flow path in fluid communication with the inlet and at least partially defined by structure compatible with the fluid cartridge module;

a second flow path in fluid communication with the outlet, the second flow path terminating at a subcutaneous conduit for the body;

a drive motor enclosed within the housing and coupled to actuate the fluid pump mechanism; and

a processor device operatively coupled to the drive motor, wherein the processor device executes computer readable program instructions to initiate an automatic priming operation when the fluid cartridge module is initially installed in the housing.

2. The fluid infusion device of claim 1, wherein the automatic priming operation primes the first flow path, the fluid pump mechanism, and the second flow path with the medication fluid to prepare the fluid infusion device for delivery of the medication fluid to the body.

3. The fluid infusion device of claim 1, wherein the automatic priming operation controls activation of the drive motor to actuate the fluid pump mechanism by a predetermined amount.

4. The fluid infusion device of claim 3, wherein the predetermined amount is calibrated in accordance with a combined fluid volume of the first flow path, the fluid pump mechanism, and the second flow path.

5. The fluid infusion device of claim 3, wherein the predetermined amount corresponds to a designated number of pump cycles of the fluid pump mechanism.

6. The fluid infusion device of claim 1, wherein:

the fluid cartridge module comprises coded features; and

the program instructions executed by the processor device interpret the coded features and automatically configure at least one operating parameter of the fluid infusion device in accordance with the coded features as interpreted.

7. The fluid infusion device of claim 1, wherein:

the fluid cartridge module comprises a first structural feature that cooperates with a second structural feature of the fluid infusion device; and

the processor device initiates the automatic priming operation in response to interaction between the first structural feature and the second structural feature.

8. The fluid infusion device of claim 1, wherein:

the fluid cartridge module comprises an electrically conductive element;

the fluid infusion device comprises an electronic detection circuit having electrically conductive terminals; and

the processor device initiates the automatic priming operation in response to contact between the electrically conductive element and the electrically conductive terminals.

9. The fluid infusion device of claim 1, further comprising a sensor system enclosed within the housing, wherein the sensor system detects when the fluid cartridge module is initially installed in the housing.

10. The fluid infusion device of claim 1, wherein:

the fluid infusion device is a disposable insulin pump device; and

the medication fluid comprises insulin.

11. A method of operating a fluid infusion device comprising a housing, a fluid pump mechanism having an inlet and an outlet, a first flow path in fluid communication with the inlet and at least partially defined by structure compatible with fluid cartridge modules containing medication fluid, a second flow path in fluid communication with the outlet and terminating at a subcutaneous conduit for a body, and a drive motor coupled to actuate the fluid pump mechanism, the method comprising:

detecting a first installation of a fluid cartridge module in the housing, wherein the detecting occurs after the housing has been affixed to the body and after the subcutaneous conduit has been inserted into the body; and

in response to the detecting, initiating an automatic priming operation to prepare the fluid infusion device for delivery of the medication fluid to the body.

12. The method of claim 11, wherein the automatic priming operation primes the first flow path, the fluid pump mechanism, and the second flow path with the medication fluid contained in the fluid cartridge module.

13. The method of claim 11, wherein the automatic priming operation controls activation of the drive motor to actuate the fluid pump mechanism by a predetermined amount.

14. The method of claim 13, wherein the predetermined amount is calibrated in accordance with a combined fluid volume of the first flow path, the fluid pump mechanism, and the second flow path.

15. The method of claim 13, wherein the predetermined amount corresponds to a designated number of pump cycles of the fluid pump mechanism.

16. The method of claim 11, wherein:

the fluid cartridge module comprises a first structural feature that cooperates with a second structural feature of the fluid infusion device; and

the detecting is associated with interaction between the first structural feature and the second structural feature.

17. The method of claim 11, wherein:

the fluid cartridge module comprises an electrically conductive element;

the fluid infusion device comprises an electronic detection circuit having electrically conductive terminals; and

the detecting is associated with contact between the electrically conductive element and the electrically conductive terminals.

18. A non-transitory computer readable storage media comprising program instructions that, when executed, perform a method of operating a fluid infusion device, the method comprising:

detecting a first installation of a fluid cartridge module in the fluid infusion device, wherein the detecting occurs after the fluid infusion device has been affixed to a body and after a subcutaneous conduit of the fluid infusion device has been inserted into the body; and

in response to the detecting, initiating an automatic priming operation to prime the fluid infusion device with medication fluid obtained from the fluid cartridge module.

19. The non-transitory computer readable storage media of claim 18, wherein the automatic priming operation controls activation of a drive motor to actuate a fluid pump mechanism by a predetermined amount.

20. The non-transitory computer readable storage media of claim 19, wherein the predetermined amount is calibrated in accordance with a combined fluid volume of the fluid pump mechanism and fluid flow paths of the fluid infusion device, the fluid flow paths including the subcutaneous conduit.