Connection and alignment detection systems and methods

• US 8,435,209 B2
• Filed: 09/16/2011
• Issued: 05/07/2013
• Est. Priority Date: 12/30/2009
• Status: Active Grant

• Current Assignee: Medtronic Minimed Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Minimed Incorporated (Medtronic Plc)
• Inventors: Hanson, Ian B., Bente, Paul F. IV
• Primary Examiner(s): Bouchelle, Laura A
• Assistant Examiner(s): CHANDER, DIVA KAKAR
• Application Number:
  US13/235,288
• Publication Number:
  US 20120004602A1
• Time in Patent Office: 599 Days
• Field of Search: 604/67, 604/131, 604/151, 604/216, 604/506
• US Class Current: 604/67
• CPC Class Codes: A61M 2005/14268 with a reusable and a disposable component
• CPC Class Codes: A61M 2205/3389 Continuous level detection A61M2205/3393 takes precedence
• CPC Class Codes: A61M 2205/581 by audible feedback
• CPC Class Codes: A61M 2205/582 by tactile feedback
• CPC Class Codes: A61M 2205/583 by visual feedback
• CPC Class Codes: A61M 2205/6018 providing set-up signals for the apparatus configuration
• 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 2205/6036 characterised by physical shape, e.g. array of activating switches
• CPC Class Codes: A61M 2205/6045 having complementary physical shapes for indexing or registration purposes
• CPC Class Codes: A61M 2205/6054 Magnetic identification systems
• CPC Class Codes: A61M 2205/6063 Optical identification systems
• CPC Class Codes: A61M 2205/6072 Bar codes
• CPC Class Codes: A61M 2205/6081 Colour codes
• CPC Class Codes: A61M 5/1413 Modular systems comprising interconnecting elements
• CPC Class Codes: A61M 5/14248 of the skin patch type
• 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 5/1684 by detecting the amount of infusate remaining, e.g. signalling end of infusion
• CPC Class Codes: A61M 5/172 electrical or electronic A61M5/16804, A61M5/16831 take precedence
• CPC Class Codes: A61M 5/5086 for indicating if defective, used, tampered with or unsterile
• CPC Class Codes: Y10T 29/49117 Conductor or circuit manufacturing

Abstract

A medical device includes a first housing portion (FHP) and a second housing portion (SHP) configured to be to be movable relative to each other from a first position to operatively engage at a second position to couple at least one of a drive device and a needle-inserting device supported by one of the FHP and the SHP to a reservoir supported by the other of the FHP and the SHP. Electronic circuitry configured to detect at least one of a first magnetic interaction between a magnet and at least one of a first magnetically attractive material and a first magnet-responsive device and a second magnetic interaction between the magnet and at least one of a second magnetically attractive material and a second magnet-responsive device, and to provide a signal or a change in state in response to detecting at least one of the interactions.

Claims

1. A medical device for treating a user, the device comprising:

a first housing portion adapted to be carried by a user;

a second housing portion configured to be selectively operatively engaged with and disengaged from the first housing portion, the first housing portion and the second housing portion configured to be movable relative to each other from a first position to a second position to operatively engage each other at the second position;

a reservoir supported by one of the first and second housing portions;

at least one of a drive device and a needle-inserting device supported by the other of the first housing portion and the second housing portion relative to the housing portion that supports the reservoir, such that upon the first housing portion and the second housing portion being operatively engaged at the second position, the reservoir is operatively coupled to the at least one of the drive device and the needle-inserting device;

a magnet supported on the first housing portion;

at least one of a first magnetically attractive material and a first magnet-responsive device supported on the second housing portion in a position to magnetically interact with the magnet when the first housing portion and the second housing portion are in the first position;

at least one of a second magnetically attractive material and a second magnet-responsive device supported on the second housing portion in a position to magnetically interact with the magnet, upon the first housing portion and the second housing portion being operatively engaged at the second position; and

electronic circuitry configured to detect at least one of a first magnetic interaction between the magnet and the at least one of a first magnetically attractive material and a first magnet-responsive device, and a second magnetic interaction between the magnet and the at least one of a second magnetically attractive material and a second magnet-responsive device, the circuitry configured to provide a signal or a change in state in response to detection of at least one of the first magnetic interaction and the second magnetic interaction.

2. The device according to claim 1, wherein the at least one of a first magnetically attractive material and a magnet-responsive device comprises a magnetically attractive material that is attracted to the magnet when the first housing portion and the second housing portion are in the first position.

3. The device according to claim 2, wherein the at least one of a second magnetically-attractive material and a magnet-responsive device comprises a magnet-responsive device that provides the signal or changes the state, upon the first housing portion and the second housing portion being operatively engaged at the second position.

4. The device according to claim 1, wherein the at least one of a second magnetically attractive material and a magnet-responsive device comprises a magnet-responsive device that provides the signal or changes the state, upon the first housing portion and the second housing portion being operatively engaged at the second position.

5. The device according to claim 4, the device further comprising:

a user-perceptible indicator operatively coupled to the magnet-responsive device for providing a user-perceptible indication in response to the signal or change in the state of the magnet-responsive device upon the first housing portion and the second housing portion being operatively engaged at the second position.

6. The device according to claim 5, wherein the user-perceptible indication comprises at least one of an audible indication, a visual indication, and a tactile indication.

7. The device according to claim 4,

wherein the at least one of a drive device and a needle-inserting device comprises a drive device for selectively driving fluid from the reservoir;

and

wherein the delivery device further comprises control electronics operatively coupled to the magnet-responsive device for controlling the drive device dependent upon the signal from or state of the magnet-responsive device.

8. The device according to claim 7, wherein the control electronics is configured to inhibit operation of the drive device unless the signal from or state of the magnet-responsive device corresponds to the signal or state when the first housing portion and the second housing portion are operatively engaged at the second position.

9. The device according to claim 4,

the magnet having at least one of a certain magnetic field and a certain magnetic strength;

the magnetic-responsive device comprising a sensor for detecting at least one of the certain magnetic field and the certain magnetic strength, the device further comprising;

electronic circuitry configured to provide a first signal in a case where the first housing portion and the second housing portion are operatively engaged at the second position and the sensor detects at least one of the certain magnetic field and the certain magnetic strength of the magnet;

the electronic circuitry further configured to provide a second signal in a case where the first housing portion and the second housing portion are operatively engaged at the second position and the sensor detects at least one of a magnetic field different from the certain magnetic field and a magnetic strength different from the certain magnetic strength of the magnet.

10. The device according to claim 9, the sensor configured to provide a signal for activating control circuitry of the drive device in a case where the sensor detects a gauss level exceeding a pre-defined threshold value.

11. The device according to claim 1,

wherein the reservoir supports one of the magnet and the at least one of a second magnetically-attractive material and a second magnet-responsive device;

and

wherein the at least one of a drive device and a needle-inserting device supports the other of the one of the magnet and the at least one of a second magnetically attractive material and a second magnet-responsive device in a position to interact with each other when the reservoir is operatively coupled to the at least one of the drive device and the needle-inserting device upon the first housing portion and the second housing portion being operatively engaged at the second position.

12. The device according to claim 1, the magnet and the at least one of a first magnetically attractive material and a first magnet-responsive device configured to be magnetically interactable with each other in a case where the first housing portion and the second housing portion are operatively engaged and positioned relative to each other in a predetermined manner.

13. The device according to claim 12, wherein the first housing portion and the second housing portion are positioned relative to each other in a predetermined manner in a case where the first housing portion and the second housing portion are aligned in more than one dimension.

14. The device according to claim 12, wherein the first housing portion and the second housing portion are positioned relative to each other in a predetermined manner in a case where the magnet and the at least one of a first magnetically attractive material and a first magnet-responsive device are sufficiently proximate to each other.

15. The device according to claim 1, the magnet and the at least one of a first magnetically-attractive material and a first magnet-responsive device configured to be interactable with each other in a case where the first housing portion and the second housing portion are operatively engaged and the magnet and the at least one of a first magnetically-attractive material and a first magnet-responsive device are sufficiently proximate to each other.

16. The device according to claim 15, wherein the magnet and the at least one of a first magnetically attractive material and a first magnet-responsive device are sufficiently proximate to each other in a case where the magnet and the at least one of a first magnetically attractive material and a first magnet-responsive device contact each other.

17. The device according to claim 15, wherein the magnet and the at least one of a first magnetically attractive material and a first magnet-responsive device are sufficiently proximate to each other in a case where the magnet and the at least one of a first magnetically attractive material and a first magnet-responsive device are adjacent each other.

18. The device according to claim 15, wherein the magnet and the at least one of a first magnetically attractive material and a first magnet-responsive device are sufficiently proximate to each other in a case where the magnet and the at least one of a first magnetically attractive material and a first magnet-responsive device are within a predetermined distance of each other.

19. A method of manufacturing a medical device for treating a user, the method comprising:

adapting a first housing portion to be carried by a user;

configuring a second housing portion to be selectively operatively engaged with and disengaged from the first housing portion, the first housing portion and the second housing portion configured to be movable relative to each other from a first position to a second position to operatively engage each other at the second position;

supporting a reservoir by one of the first and second housing portions;

supporting at least one of a drive device and a needle-inserting device by the other of the first housing portion and the second housing portion relative to the housing portion that supports the reservoir, such that upon the first housing portion and the second housing portion being operatively engaged at the second position, the reservoir is operatively coupled to the at least one of the drive device and the needle-inserting device;

supporting a magnet on the first housing portion;

supporting at least one of a first magnetically attractive material and a first magnet-responsive device on the second housing portion in a position to magnetically interact with the magnet when the first housing portion and the second housing portion are in the first position;

supporting at least one of a second magnetically attractive material and a second magnet-responsive device on the second housing portion in a position to magnetically interact with the magnet, upon the first housing portion and the second housing portion being operatively engaged at the second position;

configuring electronic circuitry to detect at least one of a first magnetic interaction between the magnet and the at least one of a first magnetically attractive material and a first magnet-responsive device, and a second magnetic interaction between the magnet and the at least one of a second magnetically attractive material and a second magnet-responsive device; and

configuring the circuitry to provide a signal or a change in state in response to detection of at least one of the first magnetic interaction and the second magnetic interaction.