Subcutaneous self attaching injection port with integral moveable retention members

• US 20040254537A1
• Filed: 12/19/2003
• Published: 12/16/2004
• Est. Priority Date: 06/16/2003
• Status: Active Grant

• Current Assignee: Ethicon Endo-Surgery, Inc. (Johnson & Johnson)
• Original Assignee: Ethicon Endo-Surgery, Inc. (Johnson & Johnson)
• Inventors: Nuchols, Richard P., Hunt, John V., Conlon, Sean P., Schulze, Dale R., Byrum, Randal T.
• Granted Patent: US 7,862,546 B2
• Time in Patent Office: Days
• US Class Current: 604/175
• CPC Class Codes: A61F 5/0056 using injection ports
• CPC Class Codes: A61M 2039/0223 having means for anchoring the subcutaneous access 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

A self attaching injection port has integral moveable fasteners which are moveable from a undeployed state to a deployed state engaging tissue. The fasteners may be disposed radially or tangentially, and rotated to pierce the fascia. The fasteners may be rigid or elastically deformable.

Claims

1. An injection port for injecting fluids into a body, said port comprising:

a. a housing for placement beneath the skin of the body, said housing including means for receiving a needle;

b. at least one retention member integrally attached to said housing, said at least one retention member having an undeployed state when disposed in a first position relative to said housing and a deployed state engaging tissue adjacent said housing when disposed in a second position relative to said housing.

2. The port of claim 1, wherein said at least one retention member is configured to move from said first position to said second position without being deformed.

3. The port of claim 2, wherein said at least one retention member is rotates about a respective axis as said retention member moves from said first position to said second position.

4. The port of claim 3, wherein said axis extends in a radial direction.

5. The port of claim 3, wherein said axis extends in a tangential direction.

6. The port of claim 5, wherein said retention member includes a locking member distal said axis, said locking member configured to engage said housing so as to maintain said retention member in said deployed state.

7. The port of claim 3, wherein said at least one retention member comprises an arcuate portion.

8. The port of claim 7, wherein said arcuate portion terminates in a tip which is configured to penetrate the tissue.

9. The port of claim 1, wherein said at least one retention member is elastically deformed when in said first position and returns toward its natural non-deformed configuration in moving from said first position to said second position.

11. The port of claim 9, wherein each of said at least one retention member comprises a respective a radially extending element.

12. The port of claim 11, wherein said element comprises a wire extending from said housing, said wire being configured as a coil and having super elastic properties.

13. The port of claim 12, wherein said housing includes a lower surface, said wire extending from said lower surface.

10. The port of 9, wherein said at least one retention member is in its natural non-deformed configuration when disposed at said second position.

14. An injection port for injecting fluids into a body, said port comprising:

a. a housing for placement beneath the skin of the body, said housing including means for receiving a needle;

b. a plurality of retention members integrally attached to said housing, each said retention member respectively having an undeployed state when disposed in a first position relative to said housing and a deployed state engaging tissue adjacent said housing when disposed in a second position relative to said housing, each said retention member being rotatable about a respective axis to move between said first position and said second position.

15. The port of claim 14, wherein said housing includes a flange, each said retention member being rotatably supported by said flange.

16. The port of claim 15, wherein said flange comprises respective flange portions which rotatably support a respective retention member.

17. The port of claim 14, wherein each said retention member is supported by a respective pin which defines said respective axis.

18. The port of claim 17, wherein said housing comprises a respective support for each said retention member which carries said respective pin of that retention member.

19. The port of claim 18, wherein each said respective support comprises a pair of spaced apart members which define a respective gap therebetween, said respective retention member being disposed in said gap.

20. The port of claim 18, wherein said housing includes a respective flange portion for each said respective support, said respective flange carrying said respective support.

21. The support of claim 18, wherein said support is configured to prevent said retention member from rotating freely.

22. The port of claim 14, wherein said retention member respective comprise an arcuate portion terminating in a tip configured to penetrate the tissue.

23. The port of claim 14, wherein each said respective axis is oriented tangential to said housing.

24. The port of claim 14, wherein each said respective axis is oriented radially relative to said housing.

25. An injection port for injecting fluids into a body, said port comprising:

a. a housing for placement beneath the skin of the body, said housing including means for receiving a needle;

b. a plurality of retention members integrally attached to said housing, each said retention member having an undeployed state when disposed in a first position relative to said housing and a deployed state engaging tissue adjacent said housing when disposed in a second position relative to said housing, each said retention member being elastically deformed in said first position.

26. The port of claim 25, wherein each said retention member comprises a radially extending element having super elastic properties.

27. The port of claim 26, wherein each said retention member comprises a coiled wire.

28. The port of claim 26, wherein said housing includes a lower surface, each respective retention member extending from said lower surface.

29. The port of claim 25 wherein said housing includes a lower surface, each respective retention member extending from said lower surface.

30. An injection port for injecting fluids into a body, said port comprising:

a. a housing for placement beneath the skin of the body, said housing including means for receiving a needle, said housing including a lower surface;

b. a retention member integrally attached to said housing, said retention member being rotatably moveable about an axis to a deployed state having a first position proximal said lower surface engaging tissue between said retention member and said lower surface.

31. The port of claim 30, wherein said axis is adjacent to and oriented tangentially to said lower surface.

32. The port of claim 30, wherein said axis is adjacent to and oriented vertically with respect to said lower surface.

33. The port of claim 30, wherein said retention member includes a locking member configured to engage said housing so as to maintain said retention member in said deployed state.

34. The port of claim 33, wherein said locking member is configured to penetrate tie tissue.

35. The port of claim 33, wherein said housing includes an opening configured to receive said locking member.

36. The port of claim 30, wherein said housing includes an annular flange extending outwardly therefrom proximal said lower surface, said retention member being rotatably connected to said annular flange.

37. The port of claim 36, wherein said retention member is shaped complementarily to said annular flange.