Multi-position infusion set device and process

• US 8,317,759 B2
• Filed: 01/27/2009
• Issued: 11/27/2012
• Est. Priority Date: 11/10/2003
• Status: Active Grant

• Current Assignee: Medtronic Minimed Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Minimed Incorporated (Medtronic Plc)
• Inventors: Moberg, Sheldon B., Holt, Mark, Candioty, Albert D., Kavazov, Julian D., Shetler, Lance E.
• Primary Examiner(s): STIGELL, THEODORE J
• Application Number:
  US12/360,813
• Publication Number:
  US 20090163878A1
• Time in Patent Office: 1,400 Days
• Field of Search: 604/93.01, 604/164.01, 604/164.04, 604/164.07, 604/164.08, 604/164.1, 604/164.11, 604/174, 604/180, 604/263
• US Class Current: 604/263
• CPC Class Codes: A61M 2005/1581 Right-angle needle-type devices
• CPC Class Codes: A61M 2005/1587 suitable for being connected to an infusion line after insertion into a patient
• CPC Class Codes: A61M 2025/0266 using pads, patches, tapes or the like
• CPC Class Codes: A61M 2025/028 having a mainly rigid support structure
• CPC Class Codes: A61M 25/02 Holding devices, e.g. on the body
• CPC Class Codes: A61M 39/02 Access sites
• 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 5/158 Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body

Abstract

An infusion set for subcutaneous delivery of an infusant. The infusion set may include a base removably attachable to an infusion site and a connector temporarily lockable to the base. The connector can engage the base in a plurality of orientations. The connector locks into the base after at least partial rotation of the connector about the base. The connector may include flexible arms which unlock the connector from the base. The base includes a cannula for insertion through the infusion site. The connector includes a tubing for passing the infusant. The infusant is subcutaneously passable from the tubing through the cannula when the connector is attached to the base. The infusion set may also include a hub removably attachable to the base that includes a needle that extends through the base and the cannula and a guard removably attachable to the base opposite the hub for surrounding the needle.

Claims

1. An infusion set comprising:

a base removably attachable to an infusion site for providing a subcutaneous path for an infusant, the base having a cannula;

a hub removably attachable to the base, the hub including a needle for extending through the base and through the cannula; and

a guard removably attachable to the hub for surrounding the needle when the guard is attached to the hub;

wherein, upon removal of the guard, the needle is subcutaneously insertable into the infusion site for subcutaneously positioning the cannula;

wherein the guard engages the hub when the guard is attached to the hub and is surrounding the needle.

2. An infusion set as recited in claim 1, the base having at least one aperture and the guard having at least one extended portion for extending into the at least one aperture of the base.

3. An infusion set as recited in claim 1, wherein the guard is removably attachable to the base to cover the needle when the hub is attached to the base and the needle is extended through the base and cannula.

4. An infusion set as recited in claim 1, wherein the guard attaches to the hub via a locking mechanism.

5. An infusion set as recited in claim 1, wherein the guard and the base have at least one aperture and at least one extending portion for removably attaching the guard to the base;

and the at least one extending portion of the guard engages the hub.

6. An infusion set as recited in claim 1, wherein the guard and the base have a plurality of apertures and a corresponding plurality of extending portions for removably attaching the guard to the base.

7. An infusion set as recited in claim 1, wherein the guard and the hub have a plurality of apertures and a corresponding plurality of extending portions for attaching the guard to the hub.

8. An infusion set as recited in claim 1, wherein the guard has at least one portion for extending through an aperture in the base to removably attach the guard to the base, the at least one portion of the guard also for engaging the hub to attach the guard to the hub wherein the guard covers the needle when the guard is attached to the hub.

9. An infusion set as recited in claim 1, wherein the guard has a plurality of portions for extending through a corresponding plurality of apertures in the base to removably attach the guard to the base, the plurality of portions of the guard also for engaging the hub to attach the guard to the hub, wherein the guard covers the needle when the guard is attached to the hub.

10. An infusion set as recited in claim 1, wherein:

the base has a plurality of apertures and the guard has a plurality of tabs for engaging the plurality of apertures of the base for releasably connecting the guard to the base;

the base has a plurality of locking surfaces;

wherein the guard is at least partially rotatable about an axis of the base; and

wherein rotation of the guard about the base causes the plurality of tabs to engage with the plurality of locking surfaces to inhibit separation of the guard from the base in an axial direction parallel to the axis of the base.

11. An infusion set comprising:

a base removably attachable to an infusion site for providing a subcutaneous path for an infusant, the base having a cannula;

a hub removably attachable to the base, the hub including a needle for extending through the base and through the cannula; and

a guard removably attachable to the base opposite the hub for surrounding the needle, the guard and the base having at least one aperture and locking surface and at least one tab for engaging the at least one aperture, for releasably attaching the guard to the base;

wherein the guard is at least partially rotatable about an axis of the base;

wherein rotation of the guard about the base causes the tab to engage with the locking surface to inhibit separation of the guard from the base in an axial direction parallel to the axis of the base; and

wherein, upon removal of the guard, the needle is subcutaneously insertable into the infusion site for subcutaneously positioning the cannula.

12. An infusion set as recited in claim 11, the base having a plurality of apertures and the guard having a plurality of tabs for engaging the plurality of apertures of the base for releasably connecting the guard to the base.

13. An infusion set as recited in claim 12, the base having a plurality of locking surfaces for retaining the a plurality of tabs in the a plurality of apertures to inhibit separation of the base and the guard.

14. An infusion set as recited in claim 12,

wherein the guard has a body that is flexible;

and

wherein the body of the guard has an outer surface arranged to be manually squeezed to cause the body of the guard to be flexed to remove the guard from the base.

15. An infusion set as recited in claim 11, wherein the hub has a flexible body capable of being manually squeezed to remove the hub from the base when the hub is attached to the base;

and

wherein the base and the hub have at least one aperture and at least one tab for engaging the at least one aperture for releasably connecting the hub to the base.

16. An infusion set as recited in claim 15, the body of the hub having one or more flexible arms, each tab extending from a respective one of the one or more flexible arms.

17. An infusion set as recited in claim 15, the body of the hub having at least one wing for providing leverage to manually squeeze the body of the hub during insertion or removal of the at least one tab from the at least one aperture.

18. An infusion set as recited in claim 11,

wherein the hub has a body that is flexible;

and

wherein the body of the hub has an outer surface arranged to be manually squeezed to cause the body of the hub to be flexed to remove the hub from the base.

19. An infusion set as recited in claim 11, the base removably lockable to a connector for providing a fluid flow path for the infusant to the subcutaneous path.

20. An infusion set comprising:

a base removably attachable to an infusion site for providing a subcutaneous path for an infusant, the base having a cannula;

a hub removably attachable to the base, the hub including a needle for extending through the base and through the cannula; and

a guard removably attachable to the base opposite the hub for surrounding the needle, the guard and the base having at least one aperture and at least one tab for engaging the at least one aperture, for releasably attaching the guard to the base, the guard having a flexible body capable of being manually squeezed to release and remove the guard from the base when the guard is attached to the base;

wherein, upon removal of the guard, the needle is subcutaneously insertable into the infusion site for subcutaneously positioning the cannula;

the base having a plurality of apertures and the guard having a plurality of tabs for engaging the plurality of apertures of the base for releasably connecting the guard to the base;

the base having a plurality of locking surfaces;

wherein the guard is at least partially rotatable about an axis of the base; and

wherein rotation of the guard about the base causes the plurality of tabs to engage with the plurality of locking surfaces to inhibit separation of the guard from the base in an axial direction parallel to the axis of the base.