Subcutaneous needle connection system

• US 20070083156A1
• Filed: 10/06/2005
• Published: 04/12/2007
• Est. Priority Date: 10/06/2005
• Status: Abandoned Application

• Current Assignee: Atrium Medical Corporation (Getinge AB)
• Original Assignee: Atrium Medical Corporation (Getinge AB)
• Inventors: Herweck, Steve, Muto, Rudolph
• Application Number:
  US11/246,462
• Publication Number:
  US 20070083156A1
• Time in Patent Office: Days
• US Class Current: 604/93.10
• CPC Class Codes: A61M 1/285 Catheters therefor
• CPC Class Codes: A61M 1/3661 for haemodialysis
• CPC Class Codes: A61M 2039/0211 with multiple chambers in a single site
• CPC Class Codes: A61M 39/0208 Subcutaneous access sites for injecting or removing fluids transcutaneous access sites A61M39/0247; implantable infusion devices A61M5/14276

Abstract

An apparatus for establishing a re-usable, recurring, mechanical connection to an organ within a patient is provided. A subcutaneous needle connection system for providing bidirectional, straight and turbulent-free fluid flow access to a vascular system of a patient includes a housing defining a needle access opening for receiving a needle, a cannula opening in communication with the vascular system and a passageway connecting the needle access opening to the cannula opening. The housing can additionally have a second needle access opening connected to a second cannula opening via a second passageway. The subcutaneous needle connection system allows for blood to be removed from the vascular system via one cannula opening, passed to a hemodialysis system via a needle inserted in an associated needle access opening, treated using the hemodialysis system, and returned to the vascular system via the other needle access opening and associated cannula opening. The implantable needle connection system provides enhanced mechanical stability under the skin, improved fluid flow dynamics, improved needle hole healing potential of the skin, and improved needle edge interfacing to minimize flow turbulence and blood cell trauma during use.

Claims

1. A subcutaneous needle connection system for providing access to a vascular system of a patient, comprising:

a housing including a first opening configured to receive a needle, a second opening configured to be placed in communication with the vascular system and a first passageway connecting the first opening and the second opening;

a first valve disposed in the first opening, the first valve configured to automatically open upon insertion of a needle in the first opening to provide access to the first passageway; and

a second valve in the first opening configured to be mechanically activated to provide access to the first valve.

2. The subcutaneous needle connection system of claim 1, further comprising a topically recognizable manual actuator on the housing for selectively activating the second valve.

3. The subcutaneous needle connection system of claim 1, wherein the first valve automatically closes upon removal of a needle from the first opening.

4. The subcutaneous needle connection system of claim 1, wherein the first opening is formed on a side surface of the housing, the side surface extending substantially perpendicular to a surface on which the housing is placed when implanted in a patient.

5. The subcutaneous needle connection system of claim 1, wherein the housing has a bottom surface configured to interface with a surface of the patient when implants, the bottom surface having a tripod shape to facilitate stability of the system on the surface.

6. The subcutaneous needle connection system of claim 5, wherein the tripod shape includes a first foot in the vicinity of the second opening, a second foot in the vicinity of the first opening and a third foot in the vicinity of the first opening.

7. The subcutaneous needle connection system of claim 6, wherein the bottom surface include arcuate edges connecting the first, second and third feet.

8. The subcutaneous needle connection system of claim 1, wherein the first valve includes a beveled surface configured to mate with a beveled surface of a needle inserted in the first opening.

9. The subcutaneous needle connection system of claim 1, wherein the first opening is substantially funnel-shaped.

10. The subcutaneous needle connection system of claim 1, wherein the axis of a needle inserted in the first opening aligns with the first passageway and an axis of the second opening to provide a substantially straight fluid flow path through the housing.

11. The subcutaneous needle connection of claim 1, further comprising a third opening for receiving a needle, a fourth opening configured to be placed in communication with the vascular system and a second passageway connecting the third opening and the fourth opening.

12. The subcutaneous needle connection system of claim 11, wherein the first opening and the third opening are formed on a side surface of the housing and are angled away from each other.

13. The subcutaneous needle connection system of claim 1, wherein the housing is rotatable when implanted in the body to expose the first opening to different cannulation areas.

14. A subcutaneous needle connection system for providing access to a vascular system of a patient, comprising:

a housing;

a first opening configured to receive a needle formed in the housing;

a second opening configured to be placed in communication with the vascular system formed in the housing;

a first passageway extending through the housing and connecting the first opening and the second opening;

wherein the housing defines a bottom surface having at least three feet configured to rest on a subcutaneous surface within the patient.

15. The subcutaneous needle connection system of claim 14, wherein the first opening is formed on a first end of the housing and the second opening is formed on a second end of the housing opposite the first opening.

16. The subcutaneous needle connection system of claim 15, wherein a first foot is formed on the bottom surface in the vicinity of the second end of the housing and a second foot and a third foot are formed on the bottom surface in the vicinity of the first end of the housing.

17. The subcutaneous needle connection system of claim 15, wherein the bottom surface has a width that tapers from the first end to the second end.

18. The subcutaneous needle connection system of claim 14, wherein the bottom surface includes arcuate edges connecting each of the three feet.

19. The subcutaneous needle connection system of claim 14, wherein the first opening and the second opening are angled away from each other.

20. A subcutaneous needle connection system for providing access to a vascular system of a patient, comprising:

a housing including a first opening configured to receive a needle, a second opening configured to be placed in communication with the vascular system and a first passageway connecting the first opening and the second opening; and

a needle mating system within the first opening for placing a needle inserted into the first opening in fluid communication with the first passageway, the needle mating system including a beveled surface configured to mate with a beveled surface on a needle inserted in the first opening.

21. The subcutaneous needle connection system of claim 20, wherein the needle mating system includes a first valve configured to automatically open upon mating of the beveled surface of the needle with the beveled surface of the needle mating system.

22. The subcutaneous needle connection system of claim 21, wherein the first valve comprises a sliding cylinder valve.

23. The subcutaneous needle connection system of claim 21, wherein the needle mating system includes a second valve that is mechanically activated to provide access to the first valve.

24. The subcutaneous needle connection system of claim 23, wherein the second valve comprises a rotating cylinder valve.

25. The subcutaneous needle connection system of claim 21, wherein the first valve automatically closes when the needle is removed from the first opening.

26. The subcutaneous needle connection system of claim 20, wherein the first opening is substantially funnel-shaped.

27. The subcutaneous needle connection system of claim 20, wherein the needle mating system further comprises a sealing ring for engaging the needle upon mating of the beveled surface of the needle with the beveled surface of the needle mating system.

28. The subcutaneous needle connection system of claim 20, wherein the first opening is configured to align a needle with the first passageway and axis of the second opening upon mating of the beveled surface of the needle with the beveled surface of the needle mating system.