Infusion set

• US 7,297,138 B2
• Filed: 05/03/2006
• Issued: 11/20/2007
• Est. Priority Date: 11/18/2003
• Status: Active Grant

• Current Assignee: Ypsomed AG (Ypsomed Holding AG)
• Original Assignee: ICU Medical Incorporated
• Inventors: Fangrow, Thomas F. Jr.
• Primary Examiner(s): Sirmons; Kevin C.
• Assistant Examiner(s): GILBERT, ANDREW M
• Application Number:
  US11/417,655
• Publication Number:
  US 20060270992A1
• Time in Patent Office: 566 Days
• Field of Search: 604/164.01, 604/164.04, 60416701-16702, 604/180, 604/890.1, 604/288.02, 604/533
• US Class Current: 604/167.02
• 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 39/0247 Semi-permanent or permanent transcutaneous or percutaneous access sites to the inside of the body peritoneal dialysis catheters A61M1/285; tracheostomy devices A61M16/0465; measuring pressure within the body A61B5/03; colostomy devices A61F5/445; gastrotomy feeding tubes A61J15/0015; means for fixing a feeding tube outside of the body A61J15/0053
• CPC Class Codes: A61M 39/1011 Locking means for securing connection; Additional tamper safeties A61M39/16 takes precedence
• 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 comprises a base member (60), an introducer cap (64), and an infusion cap (54). The base member (60) preferably comprises a soft cannula (52) extending from a lower side (118) of the base member (60), and a port (62) on an upper side (92) thereof. The port (62) is configured to be in fluid communication with the cannula (52). The port (62) also comprises a septum (130) adapted to seal the port (62) against unwanted fluid flow. The introducer cap (64) is adapted to be mounted to the base member (60) and has a needle (66) adapted to extend through the septum (130) and said soft cannula (52) in an assembled position. The infusion cap (54) comprises a lumen (160) adapted to receive an elongate flexible tube (162). The infusion cap (54) also comprises a hard cannula (170) adapted to be inserted through the septum (130) and to place said soft cannula (52) in fluid communication with said lumen (160).

Claims

1. An infusion set comprising:

a base having upper and lower sides, a base cannula extending downwardly from the lower side, and a port extending upwardly from the upper side, the port being in fluid communication with the base cannula, and the port comprising a septum adapted to substantially seal said port from fluid communication therethrough; and

an infusion cap comprising;

an upper side and a lower side, the infusion cap being adapted to be pressed against the upper side of the base and removably attached to the base after disengagement of an introducer cap from the base, the infusion cap being adapted to rotate with respect to the base while engaged;

an infusion cannula extending downwardly from the lower side of the infusion cap;

an elongate flexible lumen in fluid communication with the infusion cannula, the infusion cannula being adapted to extend through the septum on the upper side of the base upon engagement of the infusion cap and the base to place the flexible lumen and the infusion cap in fluid communication with the base cannula;

a guide section on the lower side of the infusion cap in close proximity to the infusion cannula, the guide section being configured to align the infusion cap with the port of the base whereby the infusion cannula is directed toward the septum when the infusion cap is removably coupled to the base, wherein the guide section extends downwardly from the lower side of the infusion cap beyond the infusion cannula, wherein the guide section is substantially cylindrical, wherein the infusion cap comprises at least one retaining member to attach to the base, and wherein the lowest surface of the guide section is upwardly spaced from the lowest surface of the at least one retaining member.

2. The infusion set of claim 1, wherein the septum is pre-slit.

3. The infusion set of claim 1, wherein the guide section surrounds the infusion cannula.

4. The infusion set of claim 1, wherein the guide section and the cannula are substantially co-axial.

5. The infusion set of claim 1, wherein the base further comprises a rim and the at least one retaining member attaches to the rim of the base.

6. The infusion set of claim 5, wherein the retaining member is a foot.

7. The infusion set of claim 5, wherein the infusion cap further comprises at least a second retaining member to attach to the rim of the base.

8. An infusion set comprising:

a base having upper and lower sides, a base cannula extending downwardly from the lower side, and a port extending upwardly from the upper side, and the port comprising a septum adapted to inhibit fluid communication through the port; and

an infusion cap comprising;

an upper side and a lower side, the infusion cap being adapted to be pressed against the upper side of the base and removably coupled to the base, the infusion cap being adapted to rotate with respect to the base while the infusion cap and the base are coupled;

an infusion cannula extending downwardly from the lower side of the infusion cap, the infusion cannula being adapted to extend through the septum on the upper side of the base upon coupling of the infusion cap and the base to place the infusion cannula in fluid communication with the base cannula;

a guide section on the lower side of the infusion cap in close proximity to the infusion cannula, the guide section being configured to assist in aligning the infusion cap with the port of the base whereby the infusion cannula is directed toward the septum when the infusion cap is removably coupled to the base wherein the guide section extends downwardly from the lower side of the infusion cap beyond the infusion cannula, wherein the guide section is substantially cylindrical, wherein the infusion cap comprises at least one retaining member to attach to the base, and wherein the lowest surface of the guide section is upwardly spaced from the lowest surface of the at least one retaining member.

9. The infusion set of claim 8, wherein the infusion cap is adapted to be removably coupled to the base after disengagement of an introducer cap from the base.

10. The infusion set of claim 8, wherein the infusion cap further comprises an elongate flexible lumen in fluid communication with the infusion cannula.

11. The infusion set of claim 8, wherein the septum is pre-slit.

12. The infusion set of claim 8, wherein the guide section surrounds the infusion cannula.

13. The infusion set of claim 8, wherein the guide section and the cannula are substantially co-axial.

14. The infusion set of claim 8, wherein the base further comprises a rim and the at least one retaining member attaches to the rim of the base.

15. The infusion set of claim 14, wherein the retaining member is a foot.

16. The infusion set of claim 14, wherein the infusion cap further comprises at least a second retaining member to attach to the rim of the base.