Infusion system consumables and related calibration methods

• US 10,552,580 B2
• Filed: 02/07/2017
• Issued: 02/04/2020
• Est. Priority Date: 02/07/2017
• Status: Active Grant

• Current Assignee: Medtronic Minimed Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Minimed Incorporated (Medtronic Plc)
• Inventors: Bazargan, Afshin
• Primary Examiner(s): Hayman, Imani N
• Application Number:
  US15/427,019
• Publication Number:
  US 20180225423A1
• Time in Patent Office: 1,092 Days
• CPC Class Codes: A61M 2205/3334 Measuring or controlling the flow rate
• CPC Class Codes: A61M 2205/3584 using modem, internet or bluetooth
• CPC Class Codes: A61M 2205/502 User interfaces, e.g. screens or keyboards
• CPC Class Codes: A61M 2205/52 with memories providing a history of measured variating parameters of apparatus or patient
• CPC Class Codes: A61M 2205/6072 Bar codes
• CPC Class Codes: A61M 2205/70 with testing or calibration facilities
• CPC Class Codes: A61M 2207/00 Methods of manufacture, assembly or production
• CPC Class Codes: A61M 2230/201 Glucose concentration
• CPC Class Codes: A61M 5/14216 Reciprocating piston type
• CPC Class Codes: A61M 5/14228 with linear peristaltic action, i.e. comprising at least three pressurising members or a helical member
• CPC Class Codes: A61M 5/1723 using feedback of body parameters, e.g. blood-sugar, pressure measurement of body parameters A61B5/00
• CPC Class Codes: F04B 19/22 of reciprocating-piston type
• CPC Class Codes: F04B 2205/05 Pressure after the pump outlet
• CPC Class Codes: F04B 2205/09 Flow through the pump
• CPC Class Codes: F04B 23/02 having reservoirs
• CPC Class Codes: F04B 43/12 having peristaltic action
• CPC Class Codes: F04B 43/1253 by using two or more rollers as squeezing elements, the rollers moving on an arc of a circle during squeezing
• CPC Class Codes: F04B 43/1269 the rotary axes of the rollers lying in a plane perpendicular to the rotary axis of the driving motor
• CPC Class Codes: F04B 51/00 Testing machines, pumps, or pumping installations
• CPC Class Codes: F04B 9/045 the means being eccentrics
• CPC Class Codes: G16H 20/17 : delivered via infusion or injection
• CPC Class Codes: G16H 40/63 : for local operation

Abstract

Infusion systems including infusion devices and consumables and related operating methods are provided. An exemplary consumable component includes a housing, a reservoir contained within the housing, a pumping mechanism for dispensing a fluid from the reservoir, and a readable element associated with the housing. The readable element maintains calibration data characterizing a relationship between delivery of the fluid and actuation of the pumping mechanism.

Claims

1. A method of manufacturing a consumable component, the method comprising:

actuating, by a control module, a pumping mechanism of the consumable component by a reference amount, the consumable component comprising a housing containing a reservoir, the pumping mechanism for dispensing a fluid from the reservoir and a readable element associated with the housing, the pumping mechanism including a mechanism for translating rotation to a linear displacement of a piston coupled to the mechanism;

obtaining, by the control module from a sensing arrangement, a measured response to the reference amount;

determining, by the control module, calibration data associated with the consumable component characterizing a relationship between delivery of the fluid and actuation of the pumping mechanism based on the relationship between the measured response and the reference amount; and

writing, by the control module, the calibration data associated with the consumable component to the readable element.

2. The method of claim 1, wherein writing the calibration data comprises providing a barcode representation of the calibration data on a housing of the consumable component.

3. The method of claim 1, wherein writing the calibration data comprises writing the calibration data to a radio frequency identification (RFID) tag contained within a housing of the consumable component.

4. The method of claim 1, wherein writing the calibration data comprises storing the calibration data on a data storage element contained within a housing of the consumable component.

5. The method of claim 1, wherein obtaining the measured response comprises obtaining a measured volume of fluid from a flow meter downstream of the pumping mechanism.

6. The method of claim 1, wherein obtaining the measured response comprises obtaining a measured pressure from a pressure sensor downstream of the pumping mechanism.

7. The method of claim 6, wherein determining the calibration data comprises:

converting the measured pressure to a corresponding amount of fluid delivery; and

determining a calibration factor based on a relationship between the reference amount of actuation and the corresponding amount of fluid delivery.

8. The method of claim 1, further comprising:

providing the reservoir containing the fluid within the housing of the consumable component; and

providing the pumping mechanism within the housing of the consumable component after actuating the pumping mechanism by the reference amount and obtaining the measured response, wherein the pumping mechanism is in fluid communication with the reservoir.

9. The method of claim 8, further comprising providing the readable element on a surface of the housing of the consumable component after determining the calibration data.