Infusion set with patch

• US 20050240154A1
• Filed: 04/20/2005
• Published: 10/27/2005
• Est. Priority Date: 04/21/2004
• Status: Abandoned Application

• Current Assignee: Unomedical A/S
• Original Assignee: Unomedical A/S
• Inventors: Mogensen, Lasse W., Kornerup, Grete
• Application Number:
  US11/110,305
• Publication Number:
  US 20050240154A1
• Time in Patent Office: Days
• US Class Current: 604/173
• 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 including an infusion part and a connector being in fluid communication with a medical device is provided. The infusion part includes multiple micro needles being in fluid communication with a chamber and the chamber is supplied with fluid from the medical device. The fluid is conducted through a conduit which opens into the chamber and the chamber is in fluid contact with the inlets of all micro needles.

Claims

1. An infusion set comprising an infusion part (1) and a connector (2) being in fluid communication with a medical device, the infusion part (1) comprises multiple micro needles being in fluid communication with a chamber (6), and the chamber (6) is supplied with fluid from the medical device characterized in that fluid is conducted through a conduit which opens into the chamber (6), and the chamber (6) is in fluid contact with the inlets of all microneedles.

2. An infusion set according to claim 1, characterized in that the chamber (6) has rigid walls.

3. An infusion set according to claim 1, characterized in that the connector (2) is releasably fastened to the infusion part (1) and secures the connection between the infusion part (1) and the medical device as the conduit (3) is integrated with the connector.

4. An infusion set according to claim 1, characterized in that the connector (2) comprises a cannula (9) and that the infusion part further comprises a cavity (8) being in fluid communication with the chamber (6) and being adapted to receive the cannula (9) of the releasably fastened connector (2).

5. An infusion set according to claim 1, characterized in that the chamber (6) is filled with a transport material.

6. An infusion set according to claim 5, characterized that the transport material is selected from the group consisting of a hard material having grooves providing fluid communication through the chamber, a hard material having cross-millings, felt, a porous material, cotton, silicon or silicon oxides materials, blown materials and micro cellular urethane materials.

7. An infusion set according to claim 6, characterized in that the hard material is a polymer, glasfibres or plexiglass.

8. An infusion set according to claim 7, characterized in that the polymer is selected from the group consisting of polyester, polypropylene, polyethylene, polystyrene, ABS and polycarbonate;

glass fibres and plexiglass.

9. An infusion set according to claim 1, characterized in that the chamber (6) has supporting members.

10. An infusion set according to claim 4, characterized in that the cavity (8) splits in multiple canals each being in fluid communication with the chamber (6) and having their length and diameter adjusted to each other in such manner that the fluid pressure at the inlet to the chamber essentially is the same.

11. An infusion set according to claim 1, characterized in that the micro needles are placed at a separate patch.

12. An infusion set according to claim 11, characterized in that the patch is attached to the infusion set by means of rivets, screws, by welding, by adhesives, by heat deformation or by having a patch slightly larger than the hole receiving it.

13. An infusion set according to claim 1, characterized in that the micro needles have one of the following shapes:

a cone having a side outlet, a hollow needle with outlets on the side of the cylindrical part, a cone with outlet at the tip, a needle having an outlet at its attachment foot or next to its attachment point, a slashed needle, a needle having prickles and with outlet either at the bottom, at the side or at the point.

14. An infusion set according to claim 1, characterized in that the micro needles are made of a material selected from the group consisting of:

pharmaceutical grade stainless steel, silver, platinum, titanium, nickel, iron, gold, tin, copper, chromium, alloys of previous metals, silicon, silicon dioxide, ceramics, acrylic materials, polymers and surface treated materials.

15. An infusion set according to claim 1, characterized in that the micro needles are made of a polymer selected from the group consisting of:

polycarbonate, polymethacrylic acid, ethylenevinyl actetate, polytetrafluorethane and polyesters.

16. An infusion set according to any one of claims 1, characterized in that the micro needles are made of a biodegradable material.

17. An infusion set according to claim 16, characterized in that the biodegradable material is selected from the group consisting of:

polymers of hydroxyl acids, polylactide, polyglycolide, polylactide-co-glycolide, polyanhydrides, pole(ortho)esters, polyurethanes, poly(butyric acid), poly(valeric acid) and poly (lactide-co-caprolactone).

18. An infusion set according to claim 1, characterized in that the infusion part further comprises an adhesive support.

19. An infusion set according to claim 18, characterized in that the adhesive support is a plaster.

20. An infusion set according to claim 1, characterized in that the area carrying the micro needles is raised from the lower surface.

21. An infusion set according to claim 1, characterized in that the area carrying the micro needles is the lower surface part having the largest distance to the main plane of the infusion part.

22. An infusion set according to claim 1, characterized in that the area carrying the micro needles is placed on the top of a hill.

23. An infusion set according to claim 4, characterized in that the cavity is covered by a self-closing membrane.

24. An infusion set according to claim 1, characterized in that the infusion part comprises guiding means.

25. An infusion set according to claim 1, characterized in that the infusion set comprises locking means for locking/releasing the connector to/from the infusion part.

26. An infusion set according to claim 1, characterized in that the connector is symmetrical both around the main plane of the connector and around the plane being perpendicular to the main plane and being parallel to the central axis.

27. An infusion set according to claim 1, characterized in that the connector has gripping means for getting a better grip of the connector.

28. An infusion set according to claim 1, characterized in that the infusion part further comprises a packaging.

29. An infusion set according to claim 28, characterized in that the packaging is a flange or a ring.

30. An infusion set according to claim 29, characterized in that the flange or the ring surrounds the needles.

31. An infusion set according to claim 1, characterized in that the infusion part further comprises a leak-detector.

32. An infusion set according to claim 1, characterized in that the infusion part further comprises an electrode.