USER-RELEASABLE SIDE-ATTACH ROTARY INFUSION SET

• US 20080243084A1
• Filed: 04/27/2007
• Published: 10/02/2008
• Est. Priority Date: 03/30/2007
• Status: Abandoned Application

• Current Assignee: Animas Corporation (Johnson & Johnson)
• Original Assignee: Animas Corporation (Johnson & Johnson)
• Inventors: Wojcik, Steven E., DeSTEFANO, Mark A.
• Application Number:
  US11/741,044
• Publication Number:
  US 20080243084A1
• Time in Patent Office: Days
• US Class Current: 604/180
• CPC Class Codes: A61M 2005/1581 Right-angle needle-type devices
• CPC Class Codes: A61M 2005/1585 Needle inserters
• CPC Class Codes: A61M 2005/1587 suitable for being connected to an infusion line after insertion into a patient
• 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 includes an infuser base, a cannula cartridge, a hub and a tube set connector. The infuser base includes an adhesive pad for removably adhering the infuser base to an infusion site, an infuser base opening and a barb. The cannula cartridge includes a cannula for subcutaneous insertion into the infusion site and a cannula cartridge self-sealing septum. The hub is configured for removable and user-controlled three hundred and sixty degree (360°) rotateable engagement with the barb. The hub includes a hub needle for piercing the self-sealing septum, thereby creating a fluid pathway from the hub needle to the cannula of the cannula cartridge, and a hub self-sealing septum. The cannula cartridge is configured for insertion into the infuser base opening with the cannula being subcutaneously inserted into the infusion site. The tube set connector includes a connector module configured for user-releasable attachment to the hub in a direction perpendicular to the direction of cannula insertion, a tube set connector needle for piercing the hub self-sealing septum, and a flexible tube in fluid communication with the tube set connector needle.

Claims

1. An infusion set comprising:

an infuser base that includes;

an adhesive pad configured for removably adhering the infuser base to an infusion site on a user'"'"'s skin;

a barb; and

an infuser base opening therethrough;

a cannula cartridge that includes;

a cannula for subcutaneous insertion into the infusion site;

a cannula cartridge self-sealing septum;

a hub configured for removable and user-controlled three hundred and sixty degree (360°

) rotateable engagement with the barb of the infuser base, the hub including;

a hub needle for piercing the self-sealing septum of the cannula cartridge, thereby creating a fluid pathway from the hub, through the hub needle to the cannula of the cannula cartridge;

a hub self-sealing septum; and

a tube set connector configured for user releasable lateral attachment to the hub that includes;

a connector module configured for user-releasable attachment to the hub;

a tube set connector needle for piercing the hub self-sealing septum, thereby creating a fluid pathway from the tube set connector needle to the hub; and

a flexible tube in fluid communication with the tube set connector needle;

wherein the cannula cartridge is configured for insertion into the infuser base opening with the cannula being subcutaneously inserted into the infusion site in a direction essentially perpendicular to the insertion site user'"'"'s skin; and

wherein the user-releasable lateral attachment of the tube set connector is in a direction perpendicular to the direction of cannula insertion.

2. The infusion set of claim 1 wherein the hub includes at least one resilient band configured to grip the barb, thereby providing the user-controlled 360°

rotateable engagement.

3. The infusion set of claim 2 wherein the hub further includes at least one torsion bar.

4. The infusion set of claim 1 wherein the hub includes an outer ring with a plurality of indentations and the infuser base includes a plurality of projections, the indentations and projections cooperating to provide a user with at least one of tactile feedback and auditory feedback on hub rotary position.

5. The infusion set of claim 1 wherein the barb includes a uni-directional tapered edge configured to enable alignment with the hub during attachment of the hub to the infuser base.

6. The infusion set of claim 1 wherein the hub includes at least one resilient band with at least one projection and wherein the infuser base includes a plurality of radially-spaced indentations that cooperate with the projection.

7. The infusion set of claim 1 wherein the cannula is formed of Nitinol.

8. The infusion set of claim 1 wherein the tube set connector includes a plurality of flexible arms configured to provide the user releasable lateral attachment.

9. The infusion set of claim 8 wherein the user releasable lateral attachment is accomplished via a latching operation.

11. The infusion set of claim 1 wherein the hub includes an outer ring with a plurality of indentations and the infuser base includes a plurality of projections, the indentations and projections cooperating to provide a predetermined resistance to rotary motion of the hub.

10. The infusion set of 4 wherein the indentations are circular and the projections are hemispherical in shape.