Smart connection interface

• US 9,517,299 B2
• Filed: 07/20/2015
• Issued: 12/13/2016
• Est. Priority Date: 07/21/2014
• Status: Active Grant

• Current Assignee: Medtronic Minimed Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Minimed Incorporated (Medtronic Plc)
• Inventors: Tieck, R. Marie, Pananen, Jacob E., Bazargan, Afshin, Alderete, Juan M. Jr.
• Primary Examiner(s): MENDEZ, MANUEL A
• Application Number:
  US14/803,944
• Publication Number:
  US 20160015888A1
• Time in Patent Office: 512 Days
• Field of Search: 604 65- 67, 604/131, 128/DIG.12, 128/DIG.13, 324/207.25, 324/207.2, 324/207.21
• US Class Current: 1/1
• CPC Class Codes: A61J 1/1418 Threaded type
• CPC Class Codes: A61J 1/1481 with connection retaining means, e.g. thread or snap-fit
• CPC Class Codes: A61J 1/18 Arrangements for indicating condition of container contents, e.g. sterile condition
• CPC Class Codes: A61J 2205/60 using magnetic or electronic identifications, e.g. chips, RFID, electronic tags
• CPC Class Codes: A61M 2039/1005 Detection of disconnection
• CPC Class Codes: A61M 2039/1016 Unlocking means providing a secure or comfortable disconnection
• CPC Class Codes: A61M 2039/1022 additionally providing electrical connection
• CPC Class Codes: A61M 2039/1027 Quick-acting type connectors
• CPC Class Codes: A61M 2039/1033 Swivel nut connectors, e.g. threaded connectors, bayonet-connectors
• CPC Class Codes: A61M 2039/1044 Verifying the connection, e.g. audible feedback, tactile feedback, visual feedback, using external light sources
• CPC Class Codes: A61M 2039/1094 at least partly incompatible with standard connectors, e.g. to prevent fatal mistakes in connection
• CPC Class Codes: A61M 2205/0227 Materials having sensing or indicating function, e.g. indicating a pressure increase
• CPC Class Codes: A61M 2205/0272 Electro-active or magneto-active materials
• CPC Class Codes: A61M 2205/0288 Electro-rheological or magneto-rheological materials
• CPC Class Codes: A61M 2205/12 with interchangeable cassettes forming partially or totally the fluid circuit
• CPC Class Codes: A61M 2205/121 interface between cassette and base
• CPC Class Codes: A61M 2205/14 Detection of the presence or absence of a tube, a connector or a container in an apparatus
• CPC Class Codes: A61M 2205/3306 Optical measuring means
• CPC Class Codes: A61M 2205/3317 Electromagnetic, inductive or dielectric measuring means
• CPC Class Codes: A61M 2205/52 with memories providing a history of measured variating parameters of apparatus or patient
• CPC Class Codes: A61M 2205/581 : by audible feedback
• CPC Class Codes: A61M 2205/582 : by tactile feedback
• CPC Class Codes: A61M 2205/6027 : Electric-conductive bridges closing detection circuits, with or without identifying elements, e.g. resistances, zener-diodes
• CPC Class Codes: A61M 2205/6054 : Magnetic identification systems
• CPC Class Codes: A61M 2205/6063 : Optical identification systems
• CPC Class Codes: A61M 39/10 : Tube connectors; Tube couplings A61M39/02 takes precedence; connecting needles to syringes or hubs A61M5/34; connecting catheter tubes to hubs A61M25/0014
• CPC Class Codes: A61M 39/1011 : Locking means for securing connection; Additional tamper safeties A61M39/16 takes precedence
• CPC Class Codes: A61M 39/1055 : Rotating or swivel joints in general F16L27/00
• CPC Class Codes: A61M 39/12 : for joining a flexible tube to a rigid attachment
• CPC Class Codes: A61M 5/1413 : Modular systems comprising interconnecting elements
• CPC Class Codes: A61M 5/142 : Pressure infusion, e.g. using pumps
• CPC Class Codes: A61M 5/1456 : with a replaceable reservoir comprising a piston rod to be moved into the reservoir, e.g. the piston rod is part of the removable reservoir
• CPC Class Codes: A61M 5/14566 : with a replaceable reservoir for receiving a piston rod of the pump
• CPC Class Codes: A61M 5/5086 : for indicating if defective, used, tampered with or unsterile
• CPC Class Codes: G01V 15/00 : Tags attached to, or associated with, an object, in order to enable detection of the object record carriers for use with machines having a detectable tag or marker G06K19/00
• CPC Class Codes: G01V 3/00 : Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
• CPC Class Codes: G01V 3/02 : operating with propagation of electric current
• CPC Class Codes: G01V 3/08 : operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices with electromagnetic waves G01V3/12

Abstract

A method and apparatus for a connection interface between a reservoir or syringe, infusion set tubing, and an infusion pump is provided. The reservoir, a base and a cap are connected to form an integrated unit that is capable of being inserted and secured in an infusion pump housing. The cap and the infusion pump are each provided with at least one sensor or at least one detectable feature, arranged to interact with at least one corresponding detectable feature or sensor on the other of the cap and infusion pump device, to detect one or more of the presence, position or other characteristic of the cap when the cap is aligned or coupled with the infusion pump housing. The detectable feature and sensor may be magnetic, RF, mechanical, optical or any combination.

Claims

1. An infusion pump system, comprising:

an infusion pump device having a reservoir receptacle to receive a reservoir containing infusion media and to selectively dispense the infusion media from the reservoir when the reservoir is received within the reservoir receptacle;

the reservoir for containing the infusion media;

at least one sensor element held by the infusion pump device;

a connector interface to connect the reservoir with the infusion pump device, the connector interface comprising a cap to connect to the reservoir to form a reservoir/cap unit; and

at least one magnetic detectable feature arranged on the cap for detection by the at least one sensor element on the infusion pump device when the reservoir of the reservoir/cap unit is received in the reservoir receptacle of the infusion pump device,

wherein the at least one magnetic detectable feature comprises a magnetic field angle of a magnet that is attached to a housing of the cap, the magnetic field angle being an angle of orientation of a magnetic field of the magnet relative to a predefined axis of the cap or the reservoir/cap unit, the magnetic field angle being non-parallel and non-perpendicular to the predefined axis;

wherein the magnetic field angle of the at least one magnetic detectable feature is at least one detectable parameter that is associated with one or more characteristics of the cap, the reservoir, a cannula, or a tubing connected between the cap and the cannula; and

wherein one or more predefined characteristics of the cap, the reservoir, the cannula, or the tubing connected between the cap and the cannula comprises a type or identity of a manufacturer of the cap, the reservoir, the cannula or the tubing, or a size of the cap, the reservoir, the cannula or the tubing.

2. An infusion pump system as recited in claim 1, wherein the magnetic field angle is associated with one or more characteristics of the cannula or the tubing.

3. An infusion pump system as recited in claim 2, wherein the characteristic of the cannula or the tubing of the infusion set comprises a size or length of the cannula, or a size or length of the tubing.

4. An infusion pump system as recited in claim 1, wherein the at least one detectable parameter comprises one or more of:

proximity of the at least one magnetic detectable feature, polarity direction of the at least one magnetic detectable feature, field strength of the at least one magnetic detectable feature, location on the cap of the at least one magnetic detectable feature, or pattern of locations on the cap of a plurality of magnetic detectable features.

5. An infusion pump system as recited in claim 1, wherein the at least one sensor is configured to be saturated in a first saturation state when the reservoir of the reservoir/cap unit having a magnetic detectable feature of a first polarity direction is fully received in the reservoir receptacle of the infusion pump device, and wherein the at least one sensor is configured to be saturated in a second saturation state when the reservoir of the reservoir/cap unit having a magnetic detectable feature of a second polarity direction is fully received in the reservoir receptacle of the infusion pump device, the first saturation state being opposite to the second saturation state, and the first polarity direction being opposite to the second polarity direction.

6. An infusion pump system as recited in claim 1, wherein the at least one magnetic detectable feature comprises a compass sensor detectable feature having a detectable resolution associated with one or more predefined characteristics of the cap, the reservoir, a cannula, or a tubing connected between the cap and the cannula.

7. An infusion pump system as recited in claim 1, wherein the at least one magnetic detectable feature comprises a plurality of magnets arranged at different respective locations on the cap.

8. An infusion pump system as recited in claim 1, wherein the at least one magnetic detectable feature comprises a plurality of magnetic detectable features in locations that allow the magnetic detectable features to magnetically interact with the at least one sensor element to provide detectable signals for detection of axial or rotational motion or position of the cap or the reservoir relative to the reservoir receptacle, when the reservoir/cap unit is received in the reservoir receptacle.

9. An infusion pump system as recited in claim 1, wherein the magnetic field is inclined at an angle β

relative to a side of the cap and independent of a shape of the magnet to produce an angled magnetic field at the angle β

.

10. An infusion pump system as recited in claim 1, wherein the magnetic field is inclined at an angle β

relative to a side of the cap, wherein the angle β

is between 5°

to 85°

, 95°

to 175°

, 185°

to 265°

, or 275°

to 355°

relative to the side of the cap.

11. An infusion pump system as recited in claim 1, wherein the magnetic field is inclined at an angle β

relative to a side of the cap, wherein the angle β

is between 2.5°

to 87.5°

, 92.5°

to 177.5°

, 182.5°

to 267.5°

, or 272.5°

to 357.5°

relative to the side of the cap.

12. An infusion pump system as recited in claim 1, wherein the magnetic field is inclined at an angle β

relative to a side of the cap, the angle β

is between 10°

to 80°

, 100°

to 170°

, 180°

to 260°

, or 285°

to 350°

relative to the side of the cap.

13. An infusion pump system as recited in claim 1, wherein the magnetic field is inclined at an angle β

relative to a side of the cap, wherein angle β

is set to provide a three-dimensional magnetic field angle α

relative to the side of the cap.

14. An infusion pump system as recited in claim 1, wherein the at least one magnetic detectable feature comprises magnetic field angles of two or more magnets included in the cap, wherein each magnet has its own magnetic field set at an independently set angle β

relative to a side of the cap.

15. An infusion pump system as recited in claim 14, wherein the magnetic field angles of the two or more magnets are associated with one or more characteristics of the cap, the reservoir, a cannula, or a tubing connected between the cap and the cannula, wherein as the cap is rotated into the infusion pump device, the two or more magnets create a magnetic field sequence that uniquely identifies the one or more characteristics of the cap, the reservoir, a cannula, or a tubing connected between the cap and the cannula.