Reservoir support and method for infusion device

• US 20060264888A1
• Filed: 08/23/2005
• Published: 11/23/2006
• Est. Priority Date: 05/06/2005
• Status: Active Grant

• Current Assignee: Medtronic Minimed Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Minimed Incorporated (Medtronic Plc)
• Inventors: Moberg, Sheldon B., Hanson, Ian B., Cheney, Paul S. II
• Granted Patent: US 7,641,649 B2
• Time in Patent Office: Days
• US Class Current: 604/500
• CPC Class Codes: A61M 2005/14252 with needle insertion means
• CPC Class Codes: A61M 2005/14268 with a reusable and a disposable component
• CPC Class Codes: A61M 2005/14573 with a replaceable reservoir for quick connection/disconnection with a driving system
• CPC Class Codes: A61M 2005/1581 Right-angle needle-type devices
• CPC Class Codes: A61M 2207/10 Device therefor
• CPC Class Codes: A61M 25/02 Holding devices, e.g. on the body
• CPC Class Codes: A61M 5/1413 Modular systems comprising interconnecting elements
• CPC Class Codes: A61M 5/14236 Screw, impeller or centrifugal type pumps
• 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 5/158 Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
• CPC Class Codes: A61M 5/172 electrical or electronic A61M5/16804, A61M5/16831 take precedence
• CPC Class Codes: A61M 5/1723 using feedback of body parameters, e.g. blood-sugar, pressure measurement of body parameters A61B5/00

Abstract

An infusion media delivery device includes a durable housing portion and a separable disposable portion that selectively engage and disengage from each other. The disposable housing portion secures to the patient and may be disposed of after it has been in use for a prescribed period. The disposable housing portion supports an infusion media reservoir and a needle on a moveable platform. The platform is moveable between a first position in which a needle is disengaged with a patient and a second position in which the needle is engaged with the patient.

Claims

1. A delivery device for delivering an infusion media to a user, the device comprising:

a disposable housing portion adapted to be secured to a user;

a durable housing portion configured to be selectively engaged with and disengaged from the disposable housing portion to allow disposal of the disposable housing portion without disposing of the durable housing portion;

a reservoir for containing infusion media;

a moveable platform on the disposable housing portion for supporting the reservoir for movement relative to the disposable housing portion;

electrical control circuitry contained in the durable housing portion, wherein the electrical control circuitry controls the delivery of infusion media from the reservoir to the user.

2. A delivery device according to claim 1, further comprising a plurality of struts for moveably supporting the platform and selectively locking the platform in a fixed position relative to the disposable housing portion, wherein the platform is moveably supported by the struts when the platform is in a first position relative to the struts and wherein the platform is locked in a fixed location relative to the disposable housing portion when the platform is moved into a second position relative to the struts.

3. A delivery device according to claim 2, wherein each of the struts include a projection that engages the platform in a snap-fit arrangement when the platform is moved into the second position, and wherein the projections are disengaged from the platform when the platform is in the first position.

4. A delivery device according to claim 3, wherein the platform has an upper surface for engaging the strut projections when the platform is in the second position.

5. A delivery device according to claim 2, wherein, when the platform is in the first position relative to the struts, the platform is moveable toward the disposable housing portion to the second position relative to the struts and wherein the struts include a projection that engages the platform in a snap-fit arrangement, when the platform is moved into the second position relative to the struts.

6. A delivery device according to claim 2, further comprising a spring arranged to urge the platform in the direction toward the first position of the platform relative to the struts.

7. A delivery device according to claim 6, wherein the spring is located between the platform and the disposable housing portion to urge the platform in a direction away from the disposable housing portion.

8. A delivery device according to claim 1, further comprising a hollow needle supported relative to the platform to extend at least partially into the reservoir when the reservoir is supported on the platform.

9. A delivery device according to claim 8, wherein the hollow needle is attached to the platform in a position to extend at least partially into a reservoir when the reservoir is supported on the platform.

10. A delivery device according to claim 1, further comprising a hollow needle that has a first end adapted to be extended at least partially into the reservoir when the reservoir is supported on the platform, the hollow needle having a second end having a sharp tip adapted to pierce the skin of a user when the platform is moved into a second position.

11. A delivery device according to claim 1, wherein the disposable housing portion has a base provided with an opening, the delivery device further comprising a hollow needle that has a first end adapted to be extended at least partially into the reservoir when the reservoir is supported on the platform, the hollow needle having a second end having a sharp tip adapted to extend through the opening in the base when the platform is moved into a second position.

12. A delivery device according to claim 10, wherein the hollow needle is attached to the platform in a position to extend at least partially into a reservoir when the reservoir is supported on the platform and wherein the hollow needle moves into the second position in conjunction with the movement of the platform from the first position of the platform to the second position of the platform.

13. A delivery device for delivering an infusion media to a user, the device comprising:

a housing having a base portion adapted to be secured to a user;

a reservoir for containing infusion media, the reservoir supported by the housing;

a drive device and electrical control circuitry contained in the housing for providing a controlled delivery of infusion media from the reservoir to the user;

a platform contained in the housing for receiving and supporting the reservoir;

a plurality of struts for moveably supporting the platform and selectively locking the platform in a fixed position relative to the base of the housing, wherein the platform is moveably supported by the struts when the platform is in a first position relative to the struts and wherein the platform is locked in a fixed location relative to the base of the housing when the platform is moved into a second position relative to the struts.

14. A delivery device according to claim 13, wherein each of the struts include a projection that engages the platform in a snap-fit arrangement when the platform is moved into the second position, and wherein the protjections are disengaged from the platform when the platform is in the first position.

15. A delivery device according to claim 13, wherein, when the platform is in the first position relative to the struts, the platform is moveable toward the base of the housing to the second position relative to the struts and wherein the struts include a projection that engages the platform in a snap-fit arrangement, when the platform is moved into the second position relative to the struts.

16. A delivery device according to claim 13, further comprising a spring arranged to urge the platform in the direction toward the first position of the platform relative to the struts.

17. A delivery device according to claim 16, wherein the spring is located between the platform and the base of the housing to urge the platform in a direction away from the base of the housing.

18. A delivery device according to claim 13, further comprising a hollow needle supported relative to the platform to extend at least partially into the reservoir when the reservoir is supported on the platform.

19. A delivery device according to claim 18, wherein the hollow needle is attached to the platform in a position to extend at least partially into a reservoir when the reservoir is supported on the platform.

20. A delivery device according to claim 13, further comprising a hollow needle that has a first end adapted to be extended at least partially into the reservoir when the reservoir is supported on the platform, the hollow needle having a second end having a sharp tip adapted to pierce the skin of a user when the platform is moved into a second position relative to the struts.

21. A delivery device according to claim 13, wherein the base of the housing is provided with an opening, the device further comprising a hollow needle that has a first end adapted to be extended at least partially into the reservoir when the reservoir is supported on the platform, the hollow needle having a second end having a sharp tip adapted to extend through the opening in the base when the platform is moved into a second position relative to the struts.

22. A delivery device according to claim 21, wherein the hollow needle is attached to the platform in a position to extend at least partially into a reservoir when the reservoir is supported on the platform and wherein the hollow needle moves into the second position in conjunction with the movement of the platform from the first position of the platform to the second position of the platform relative to the struts.

23. A method for delivering an infusion media to a user, the device comprising:

providing a housing having a base portion adapted to be secured to a user;

supporting a platform for movement on the base portion of the housing;

supporting a reservoir for containing infusion media on the platform;

containing a drive device and electrical control circuitry in the housing for providing a controlled delivery of infusion media from the reservoir to the user;

wherein supporting a platform comprises providing a plurality of struts, supporting the platform on the struts for movement between first and second positions relative to the struts, and locking the platform in a fixed location relative to the base of the housing when the platform is moved into a second position relative to the struts.

24. A method according to claim 23, wherein locking the platform in a fixed location relative to the base comprises engaging the platform with a projections on the plurality of struts in a snap-fit arrangement when the platform is moved into the second position.

25. A method according to claim 23, wherein locking the platform in a fixed location relative to the base comprises moving the platform from the first position to the second position and engaging the platform with projections on the struts automatically as the platform is moved into the second positon relative to the struts.

26. A method according to claim 23, further comprising spring biasing the platform in the direction toward the first position of the platform relative to the struts.

27. A method according to claim 26, wherein spring biasing the platform comprises locating a spring between the platform and the base of the housing to urge the platform in a direction away from the base of the housing.

28. A method according to claim 23, further comprising supporting a hollow needle relative to the platform to extend at least partially into the reservoir when the reservoir is supported on the platform.

29. A method according to claim 28, wherein supporting a hollow needle comprises fixing the hollow needle to the platform in a position to extend at least partially into a reservoir when the reservoir is supported on the platform.

30. A method according to claim 23, further comprising arranging a first end of a hollow needle to extend at least partially into the reservoir when the reservoir is supported on the platform, arranging a second end of the hollow needle to pierce the skin of a user when the platform is moved into a second position relative to the struts.

31. A method according to claim 23, further comprising providing an opening in the base of the housing, arranging a first end of a hollow needle to extend at least partially into the reservoir when the reservoir is supported on the platform, and moving the hollow needle such that a second end of the hollow needle is moved through the opening in the base when the platform is moved into a second position relative to the struts.

32. A method according to claim 31, wherein arranging the first end of the hollow needle comprising attaching the hollow needle to the platform in a position to extend at least partially into a reservoir when the reservoir is supported on the platform and wherein moving the hollow needle comprises moving the hollow needle into the second position in conjunction with the movement of the platform from the first position of the platform to the second position of the platform relative to the struts.