Subcutaneous self attaching injection port with integral fasteners

• US 20040254536A1
• 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: Conlon, Sean P., Kolata, Ronald John
• Granted Patent: US 7,374,557 B2
• Time in Patent Office: Days
• US Class Current: 604/175
• CPC Class Codes: A61F 5/0003 Apparatus for the treatment of obesity; Anti-eating devices surgical instruments or methods for treatment of obesity, devices specially adapted therefor A61B17/00; hollow or tubular parts of organs A61F2/04
• 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 fasteners extending from the housing, fixed relative thereto. The fasteners include one way fasteners, such as formed by a plurality of axially spaced concentrically aligned frustroconical annular flanges. The injection port is self attaching upon the surgeon applying a distal force to the injection port housing, causing the fasteners to penetrate the tissue, engaging the tissue to hold the injection port in place.

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. an attachment mechanism configured to engage tissue surrounding said housing so as to retain said housing in place, said mechanism being integrally attached to and fixed relative to said housing.

2. The port of claim 1, wherein said attachment mechanism is configured such that by applying a distal force to said housing, said attachment mechanism will engage said tissue so as to retain said housing.

3. The port of claim 1, wherein said attachment mechanism includes at least one fastener extending distally from said housing.

4. The port of claim 3, where in said at least one fastener comprises a respective distal tip which is configured to penetrate said tissue.

5. The port of claim 3, wherein said at least one fastener comprises at least one outwardly extending flange spaced from said housing.

6. The port of claim 5, wherein said at least one flange comprises a plurality of spaced apart flanges.

7. The port of claim 5 wherein said at least one flange has a frustroconical shape.

8. The port of claim 3 wherein said at least one flange is discontinuous.

9. The port of claim 3, wherein said at least one fastener comprises at least one outwardly extending finger spaced from said housing.

10. The port of claim 9, wherein said at least one finger comprises a plurality of spaced apart fingers.

11. The port of claim 3, further comprising a respective opening for each of said at least one fastener, said at least one fastener being disposed through said hole.

12. The port of claim 11, wherein said housing includes an annular flange extending proximal one end of said housing, said respective opening being formed in said annular flange.

13. A method of deploying an injection port for injecting fluids into a body, said method comprising the steps of:

a. providing an injection port comprising;

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

ii. an attachment mechanism configured to engage tissue surrounding said housing so as to retain said housing in place, said mechanism being integrally attached to and fixed relative to said housing;

b. locating said attachment mechanism adjacent said tissue; and

c. penetrating the tissue with said attachment mechanism by applying a distal force to said housing.

14. The method of claim 13, wherein said attachment mechanism includes at least one fastener extending distally from said housing.

15. The method of port of claim 14, where in said at least one fastener comprises a respective distal tip which is configured to penetrate said tissue.

16. The method of claim 14, wherein said at least one fastener comprises at least one outwardly extending flange spaced from said housing.

17. The method of claim 16, wherein said at least one flange comprises a plurality of spaced apart flanges.

18. The method of claim 16 wherein said at least one flange has a frustroconical shape.

19. The method of claim 14, wherein said at least one fastener comprises at least one outwardly extending finger spaced from said housing.

20. The method of claim 14, wherein said housing includes an annular flange extending proximal one end of said housing, said annular flange comprising a respective opening for each of said at least one fastener, each of said at least one fastener being disposed through said hole.

21. A method of deploying an injection port for injecting fluids into a body, said method comprising the steps of:

a. providing an injection port comprising;

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

ii. said housing comprising a base having a first surface and a second surface, said base including at least one opening extending through said base from said first surface to said second surface;

b. providing at one fastener comprising;

i. a shaft having a first and second end;

ii. at least one flange extending outwardly from said shaft, said at least one flange being spaced from said first end;

c. locating said second surface adjacent tissue of the body; and

c. securing said injection port adjacent said tissue by inserting said at least one fastener through said at least one opening so as to engage the tissue disposed adjacent said second surface with said at least one flange.

22. The method of claim 21, wherein said at least one flange comprises a plurality of flanges spaced apart from each other axially along said shaft.

23. The method of claim 22, wherein said plurality of flanges comprise frustroconical annular flanges.

24. The method of claim 21, wherein said at least one flange has a frustroconical shape.