SYSTEMS AND METHODS FOR INDUCTIVE IDENTIFICATION

• US 20170032152A1
• Filed: 07/28/2015
• Published: 02/02/2017
• Est. Priority Date: 07/28/2015
• Status: Active Grant

• Current Assignee: Carefusion 303 Incorporated (Becton, Dickinson & Co)
• Original Assignee: Carefusion 303 Incorporated (Becton, Dickinson & Co)
• Inventors: SALEM, Mooneer Thabet, FARHAT, Lawrence
• Granted Patent: US 10,489,617 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61M 2005/14208 with a programmable infusion control system, characterised by the infusion program
• CPC Class Codes: A61M 2205/60 with identification means
• CPC Class Codes: A61M 5/142 Pressure infusion, e.g. using pumps
• CPC Class Codes: F04B 43/02 having plate-like flexible members, e.g. diaphragms F04B43/14 takes precedence
• CPC Class Codes: F04B 53/16 Casings; Cylinders; Cylinder liners or heads; Fluid connections
• CPC Class Codes: G06K 19/0672 with resonating marks
• CPC Class Codes: G06K 19/077 Constructional details, e.g. mounting of circuits in the carrier
• CPC Class Codes: G06K 7/086 sensing passive circuit, e.g. resonant circuit transponders
• CPC Class Codes: G06K 7/10009 sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves

Abstract

Inductive identification systems and methods are described. The system may include an inductive detector configured to identify objects having inductive identifiers. An inductive detector may include conductive coils and inductance readout circuitry for measuring an inductance of each coil. An inductive identifier may include a conductive pattern configured to induce a desired inductance in the coils of the inductive detector. An inductive identifier may include a film having openings, each opening configured to be disposed over a corresponding coil to induce differing inductance changes in the corresponding coils. A pattern of inductance values may be determined and used to identify the object. The detector may be implemented in a cassette recess of an infusion pump system. The inductive identifier may be disposed on a pump cassette configured to be received in the cassette recess and identified based on an inductive interaction between the inductive detector coils and the inductive identifier.

Claims

1. An apparatus, comprising:

at least one conductive coil;

processing circuitry coupled to the at least one conductive coil and configured to (a) determine an inductance of the at least one conductive coil and (b) determine an identity of an object based on the inductance when an inductive identifier of the object is placed within a proximal distance of the at least one conductive coil.

2. The apparatus of claim 1, wherein the at least one conductive coil has a diameter and wherein the proximal distance of the at least one conductive coil comprises a distance from the conductive coil that is less than or equal to the diameter.

3. The apparatus of claim 1, wherein the inductive identifier comprises a patterned conductive film.

4. The apparatus of claim 1, wherein the inductive identifier comprises a patterned conductive ink.

5. The apparatus of claim 1, wherein the at least one conductive coil comprises a plurality of measurement coils and a reference coil.

6. The apparatus of claim 5, wherein inductive identifier comprises a plurality of features and wherein the processing circuitry is configured to determine the relative inductance of each of the measurement coils when a corresponding one of the plurality of features is within the proximal distance of that coil.

7. The apparatus of claim 6, wherein the processing circuitry is configured to identify the object based on the relative inductance of each of the measurement coils.

8. The apparatus of claim 7, wherein the processing circuitry is further configured to identify the object based on the inductance of the reference coil and a stored reference coil inductance.

9. A system comprising the apparatus of claim 1 and the inductive identifier of the object.

10. The system of claim 9, wherein the apparatus comprises a cassette recess of an infusion pump system, wherein the object comprises a pump cassette coupled to an intravenous fluid set, and wherein the inductive identifier is disposed on the cassette.

11. A pump cassette, comprising:

a rigid body comprising a compliant membrane that defines a controllable fluid pathway that extends from an inlet port to an outlet port; and

an inductive identifier comprising a coded pattern that identifies the pump cassette.

12. The pump cassette of claim 11, wherein the inductive identifier comprises an inductive identifier film having a pattern of openings, the pattern of openings defining the coded pattern.

13. The pump cassette of claim 12, wherein the inductive identifier film comprises at least one conductive layer and wherein the pattern of openings comprise openings in the conductive layer.

14. The pump cassette of claim 13, wherein the inductive identifier film comprises a metalized biaxially-oriented polyethylene terephthalate film or a material heat fused with a polycarbonate (PC) copolymer or a methacrylate-acrylonitrile-butadiene-styrene (MABS) copolymer.

15. The pump cassette of claim 14, wherein the metalized biaxially-oriented polyethylene terephthalate film comprises aluminum.

16. The pump cassette of claim 11, wherein the coded pattern comprises a predetermined set of features each having a size, a shape, a density, or a composition configured to generate a corresponding inductance value in an inductive detector of an infusion pump system.

17. An infusion pump system, comprising:

a processing unit; and

a cassette recess adapted to receive a pump cassette, the cassette recess comprising;

an inductive cassette detector; and

a plurality of mechanisms operably coupled to the processing unit and configured to control fluid flow in pump cassette.

18. The infusion pump system of claim 17, wherein the inductive cassette detector comprises a plurality of conductive coils and readout circuitry configured to determine a pattern of inductance values corresponding to the pump cassette by using an inductance value of each of the conductive coils when a corresponding feature of an inductive identifier of the pump cassette is within a proximity of that conductive coil.

19. The infusion pump system of claim 18, further comprising the pump cassette, wherein the inductive cassette detector is configured to identify an IV set type based on the pattern of inductance values.

20. The infusion pump system of claim 17, wherein the plurality of mechanisms comprises a plurality of actuators configured to operate a piston and plurality of valves of the pump cassette.