INFUSION SYSTEM CONSUMABLES AND RELATED CALIBRATION METHODS

• US 20200135323A1
• Filed: 12/23/2019
• Published: 04/30/2020
• 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
• Granted Patent: US 11,908,562 B2
• Time in Patent Office: 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 consumable component comprising:

a housing;

a reservoir contained within the housing;

a peristaltic pumping mechanism for dispensing a fluid from the reservoir; and

a readable element associated with the housing, the readable element maintaining calibration data characterizing a relationship between delivery of the fluid and actuation of the peristaltic pumping mechanism.

2. The consumable component of claim 1, wherein the peristaltic pumping mechanism is integrated into the housing.

3. The consumable component of claim 1, wherein the peristaltic pumping mechanism is incorporated with the housing.

4. The consumable component of claim 1, further comprising a conduit for the fluid exiting the reservoir, wherein the peristaltic pumping mechanism comprises rollers to compress portions of the conduit to dispense the fluid in response to rotation of a rotor coupled to the rollers.

5. The consumable component of claim 4, further comprising a port or outlet to engage an infusion arrangement, wherein the conduit comprises tubing providing a path for fluid flow from the reservoir to the port or outlet.

6. The consumable component of claim 4, wherein the rotor comprises a central bore for insertion of a rotary shaft.

7. The consumable component of claim 5, wherein the calibration data accounts for variations in a dimension of the tubing.

8. The consumable component of claim 5, wherein the calibration data accounts for variations associated with an interface between the rollers and the tubing.

9. The consumable component of claim 5, wherein the calibration data characterizes an amount of the fluid delivered from the reservoir via the tubing per revolution of the rotor.

10. The consumable component of claim 1, wherein the peristaltic pumping mechanism comprises tubing providing a path for fluid flow from the reservoir.

11. The consumable component of claim 10, wherein the tubing is housed within a cutout portion of the housing that corresponds to a rotor of an infusion device that extends into the cutout portion to engage the tubing.

12. The consumable component of claim 11, wherein the calibration data characterizes an amount of the fluid delivered from the reservoir via the tubing per revolution of the rotor.

13. The consumable component of claim 11, wherein the calibration data accounts for variations associated with an interface between rollers coupled to the rotor and the tubing.

14. The consumable component of claim 10, wherein the calibration data accounts for variations in a dimension of the tubing.

15. A system comprising:

a consumable comprising;

a housing including a reservoir contained within the housing and a tubing contained within the housing in fluid communication with the reservoir to dispense a fluid from the reservoir; and

a readable element associated with the housing, wherein the readable element maintains calibration data characterizing a relationship between delivery of the fluid and actuation of a peristaltic pumping mechanism; and

an infusion device configured to receive the housing and including an interface to obtain the calibration data from the readable element, wherein the calibration data influences operation of the peristaltic pumping mechanism by the infusion device.

16. The system of claim 15, wherein the peristaltic pumping mechanism comprises:

a rotor contained within the housing of the consumable and configured to engage a rotary shaft of the infusion device; and

rollers coupled to the rotor to compress portions of the tubing to dispense the fluid in response to rotation of the rotor by the rotary shaft.

17. The system of claim 15, wherein:

the tubing is housed within a cutout portion of the housing;

the peristaltic pumping mechanism comprises;

a rotary shaft of the infusion device extending into the cutout portion;

a rotor coupled to the rotary shaft; and

rollers coupled to the rotor; and

the rollers are configured to compress portions of the tubing and dispense the fluid in response to rotation of the rotor by the rotary shaft.

18. The system of claim 15, wherein the calibration data characterizes an amount of the fluid delivered from the reservoir via the tubing per revolution of the rotor.

19. A method of manufacturing a consumable component comprising a port or outlet to engage an infusion arrangement and tubing providing a path for fluid flow from a reservoir to the port or outlet, the method comprising:

actuating, by a control module, a peristaltic pumping mechanism by a reference amount, wherein the peristaltic pumping mechanism comprises rollers coupled to a rotor to compress portions of the tubing and dispense a fluid in response to rotation of the rotor;

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 based on the relationship between the measured response and the reference amount of actuation; and

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

20. The method of claim 19, wherein determining the calibration data comprises determining an amount of the fluid delivered from the reservoir via the tubing per revolution of the rotor.