Infusion system consumables and related calibration methods

Patent metadata

Field	Value
Publication number	US-11908562-B2
Application number	US-201916725569-A
Country	US
Kind code	B2
Filing date	Dec 23, 2019
Priority date	Feb 7, 2017
Publication date	Feb 20, 2024
Grant date	Feb 20, 2024

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.

First claim

What is claimed is:

1. A consumable component comprising:
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 maintaining calibration data indicating an amount of the fluid that is delivered relative to actuation of the pumping mechanism, wherein the amount of the fluid that is delivered relative to the actuation of the pumping mechanism is based on manufacturing of the pumping mechanism, wherein the calibration data is specific only to the consumable component accounting for the amount of fluid that is delivered relative to the actuation of the pumping mechanism as manufactured, wherein the calibration data is pre-determined and maintained on the readable element prior to coupling of the consumable component to a user, and wherein the calibration data that is specific to the consumable component is accessible for controlling signals delivered to the pumping mechanism for delivery of fluid to the user after coupling of the consumable component to the user.

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

3. The consumable component of claim 1 , wherein the 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 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 5 , wherein the calibration data accounts for variations in a dimension of the tubing.

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

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

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

10. The consumable component of claim 1 , wherein the 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 the 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 indicating an amount of the fluid that is delivered relative to actuation of a pumping mechanism, wherein the amount of the fluid that is delivered relative to the actuation of the pumping mechanism is based on manufacturing of the pumping mechanism, wherein the calibration data is specific only to the consumable component accounting for the amount of fluid that is delivered relative to the actuation of the pumping mechanism as manufactured, wherein the calibration data is pre-determined and maintained on the readable element prior to coupling of the consumable to a user, and wherein the calibration data that is specific to the consumable component is accessible for controlling signals delivered to the pumping mechanism for delivery of fluid to the user after coupling of the consumable component to the user; and
an infusion device configured to receive the housing and including an interface to obtain the calibration data from the readable element, wherein the infusion device is configured to determine the signals delivered to the pumping mechanism for the delivery of fluid to the user based on the calibration data, and deliver the determined signals to the pumping mechanism.

16. The system of claim 15 , wherein the 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 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 the 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.

Assignees

• Medtronic Minimed Inc

Inventors

• Bazargan Afshin

Classifications

• G16H20/17 Primary

  delivered via infusion or injection · CPC title

• A61M5/14216

  Reciprocating piston type · CPC title

• A61M5/14228 Primary

  with linear peristaltic action, i.e. comprising at least three pressurising members or a helical member · CPC title

• A61M5/1723

  using feedback of body parameters, e.g. blood-sugar, pressure (measurement of body parameters A61B5/00) · CPC title

• F04B9/045

  the means being eccentrics · CPC title