INFUSION HUB ASSEMBLY AND FLUID LINE DISCONNECT SYSTEM

• US 20100268166A1
• Filed: 06/28/2010
• Published: 10/21/2010
• Est. Priority Date: 03/04/2001
• Status: Active Grant

• Current Assignee: Ypsomed AG (Ypsomed Holding AG)
• Original Assignee: ICU Medical Incorporated
• Inventors: Hugo, Robert L., Zhang, Cynthia, Douglas, Joel S.
• Granted Patent: US 8,152,769 B2
• 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 2005/1587 suitable for being connected to an infusion line after insertion into a patient
• CPC Class Codes: A61M 2039/1072 with a septum present in the connector
• CPC Class Codes: A61M 39/14 for connecting tubes having sealed ends needle sets A61M5/162; having valves closing automatically on disconnection of line A61M39/26
• 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 comprising a base and a cap. The base can comprise a portion to be placed against skin, a first cannula extending downwardly below the portion to be placed against skin, and a septum. The cap can comprise a tube and a second cannula. The cap can be configured for removable attachment to the base such that the cap is rotatable with respect to the base while the first cannula, the second cannula, and the tube are in fluid communication.

Claims

1. An infusion set, comprising:

a base comprising a portion configured to be placed against skin, a first cannula extending downwardly below the portion to be placed against skin, and a septum.

a cap comprising a tube and a second cannula, the cap being configured for removable attachment to the base;

wherein, after attachment, the cap is rotatable with respect to the base while the first cannula, the second cannula, and the tube are in fluid communication.

2. The infusion set of claim 1, wherein the portion of the base configured to be placed against skin comprises an adhesive layer.

3. The infusion set of claim 1, wherein the base further comprises a wing;

4. The infusion set of claim 3, wherein the wing has a hole passing therethrough;

5. The infusion set of claim 4, further comprising a hub received in the hole in the wing.

6. The infusion set of claim 4, wherein the hole in the wing is circular and stepped and the hub has a stepped outer diameter which fits into the hole in the wing.

7. The infusion set of claim 1, wherein:

the base further comprises a cover and a needle guide;

an upper portion of the hub is circular and has an attachment surface thereon comprising a lip extending circumferentially therearound;

the cover has a bore passing therethrough and an inner attachment surface comprising a recess extending circumferentially around an internal surface of the cover adapted to mate with the attachment surface on the upper portion of the hub;

the needle guide is received in a bore of the hub; and

the septum is positioned in alignment with the bore passing through the cover and received into the needle guide when the cover is attached to the hub.

8. The infusion set of claim 7, wherein:

the cover further comprises an outer attachment surface on a circular upper portion of the cover that comprises a lip extending circumferentially therearound; and

the cap further comprises an attachment surface adapted to mate with the outer attachment surface on the upper portion of the cover, the attachment surface on the cap comprising a recess extending circumferentially around an internal surface of the cap.

9. The infusion set of claim 1, wherein the tube is received into a radial bore in the cap.

10. The infusion set of claim 9, wherein:

the second cannula comprises a curved needle;

the curved needle passes at least partially through the radial bore;

a first end of the curved needle is received into the tube; and

a second end of the curved needle is positioned to extend downwardly into the septum of the base when the cap is attached to the base.

11. The infusion set of claim 1, further comprising a removable insertion needle passing through the septum and the first cannula, and wherein a distal end of the insertion needle extends downwardly out of a distal end of the first cannula.

12. The infusion set of claim 1, wherein the base further comprises a funnel-shaped needle guide, and the first cannula is attached to the needle guide.