Subcutaneous self attaching injection port with integral moveable retention members

• US 7,862,546 B2
• Filed: 12/19/2003
• Issued: 01/04/2011
• Est. Priority Date: 06/16/2003
• Status: Expired due to Fees

• Current Assignee: Ethicon Endo-Surgery, Inc. (Johnson & Johnson)
• Original Assignee: Ethicon Endo-Surgery, Inc. (Johnson & Johnson)
• Inventors: Nuchols, Richard P., Conlon, Sean P., Schulze, Dale R., Byrum, Randal T., Hunt, John V.
• Primary Examiner(s): Sirmons; Kevin C
• Assistant Examiner(s): Anderson; Michael J
• Application Number:
  US10/741,875
• Publication Number:
  US 20040254537A1
• Time in Patent Office: 2,573 Days
• Field of Search: 604/174, 604/175, 604/288.01, 604/228, 604/116, 604/228.01, 604/228.04
• 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 attachment on tissue, said port comprising:

a. a housing, wherein the housing comprises a septum and a base member, wherein the housing defines a sealed plenum chamber between the septum and the base member, the plenum chamber including a port, wherein the plenum chamber is configured to receive fluid from a needle inserted through the septum, wherein the base member further comprises a bottom wall having a substantially flat tissue contacting surface that is impenetrable to the passage of fluid therethrough, and wherein the bottom wall, the plenum chamber, and the septum are located along a common axis, wherein the bottom wall extends across a radially central exterior bottom region of the housing opposite to the septum, wherein the housing further comprises at least one sidewall extending upwardly from the bottom wall of the housing;

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, wherein the at least one retention member is configured to secure the substantially flat tissue contacting surface of the bottom wall of the housing adjacent to tissue when the at least one retention member is in the deployed state;

c. at least one device attachment surface on said housing, wherein said device attachment surface is configured to engage with a port attachment device to removably attach said injection port thereto;

d. a gastric band having an inflatable member; and

e. a conduit coupling the housing with the gastric band and providing fluid communication between the inflatable member of the gastric band and the port of the plenum chamber of the housing, such that the plenum chamber, the conduit, and the inflatable member together form a closed fluid circuit.

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 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 each said axis extends in a radial direction from said housing.

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

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

7. The port of claim 6, wherein said arcuate portion terminates in a tip which is configured to penetrate the tissue.

8. 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.

10. The port of claim 8, wherein each of said at least one retention member comprises a respective a radially extending element.

9. The port of 8, wherein said at least one retention member is in its natural non-deformed configuration when disposed at said second position.

11. An injection port for attachment on tissue, said port comprising:

a. a housing, wherein the housing comprises a septum and a base member, wherein the housing defines a plenum chamber between the septum and the base member, the plenum chamber including a port, wherein the plenum chamber is configured to receive fluid from a needle inserted through the septum, wherein the base member further comprises a substantially flat bottom wall that is impenetrable to the passage of fluid therethrough and configured for placement against tissue;

wherein the bottom wall, the plenum chamber, and the septum are located along a common axis such that the axis passes through each of the bottom wall, the plenum chamber, and the septum;

wherein the housing further comprises at least one sidewall extending upwardly from the bottom wall of the housing;

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, wherein the plurality of retention members are configured to secure the substantially flat bottom wall of the housing adjacent to tissue when the plurality of retention members are in the deployed state;

c at least one device attachment member on said injection port, wherein said device attachment member is configured to releasably engage with a port attachment tool to attach said injection port to said port attachment tool for the simultaneous movement of each of said at least one retention member from the undeployed position to the deployed position;

d. a gastric band having an inflatable member; and

e. a conduit coupling the housing with the gastric band and providing fluid communication between the inflatable member of the gastric band and the port of the plenum chamber of the housing, wherein a fluid amount in the inflatable member is adjustable by a needle inserted in the septum.

12. The port of claim 11, wherein said housing includes a flange, each said retention member being rotatably supported by said flange.

13. The port of claim 12, wherein said flange comprises respective flange portions which rotatably support a respective retention member.

14. The port of claim 11, wherein each said retention member is supported by a respective pin which defines said respective axis.

15. The port of claim 14, wherein said housing comprises a respective support for each said retention member which carries said respective pin of that retention member.

16. The port of claim 15, 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.

17. The port of claim 15, wherein said housing includes a respective flange portion for each said respective support, said respective flange carrying said respective support.

18. The port of claim 11, wherein said respective retention members comprise an arcuate portion terminating in a tip configured to penetrate the tissue.

19. The port of claim 11, wherein each said respective axis is oriented tangential to said housing.

20. The port of claim 11, wherein each said respective axis is oriented radially relative to said housing.

21. An injection port for attachment on tissue, said port comprising:

a. a housing, wherein the housing comprises a septum and a base member, wherein the housing defines a sealed reservoir between the septum and the base member, the reservoir including a port, wherein the reservoir is configured to receive fluid from a needle inserted through the septum, said housing including a bottom wall of the housing defining a radial center point, wherein the bottom wall extends radially outward from the radial center point to an outer perimeter to define a bottom outer face, wherein at least the bottom outer face of the bottom wall is substantially flat and configured to contact tissue and impenetrable to passage of fluid therethrough, and wherein the housing further comprises at least one tool attachment surface configured to releasably engage with a port attachment tool; and

b. a retention member integrally attached to said housing, said retention member 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, wherein the tool attachment surface is configured to attach to a port attachment tool when the retention member is in the undeployed state and the retention member is configured to secure the bottom outer face of the wall of the housing adjacent to tissue when the retention member is moved to the deployed state by the port attachment tool;

c. a gastric band having an inflatable member; and

d. a conduit coupling the housing with the gastric band and providing fluid communication between the inflatable member of the gastric band and the port of the reservoir of the housing, such that the reservoir, the conduit, and the inflatable member together form a closed fluid circuit.

22. The port of claim 21, wherein said axis is adjacent to and oriented tangentially to said lower surface.

23. The port of claim 21, wherein said axis is adjacent to and oriented vertically with respect to said lower surface.

24. The port of claim 21, wherein said housing includes an annular flange extending outwardly therefrom proximal said lower surface, said retention member being rotatably connected to said annular flange.

25. A method of attaching an injection port on tissue of a patient, the method comprising:

a) attaching an injection port to a port attachment tool by releasably engaging at least one tool attachment surface on the injection port with the port attachment tool, the injection port having a housing and a septum for receiving a needle therein and at least one retention member integrally attached to the injection port in an undeployed position, the injection port further comprising a reservoir therein sealed against a bottom of the septum for the reception of fluid from the needle, wherein the injection port further comprises a substantially flat lower wall of the housing that is configured to be placed against tissue, wherein the reservoir has a bottom surface and a top surface, wherein the top surface of the reservoir is defined by the septum, wherein the bottom surface of the reservoir is further impenetrable to the passage of fluid therethrough, wherein the bottom surface of the reservoir is integral with the lower wall of the housing;

wherein a common axis passes through each of the septum, the reservoir, the bottom surface of the reservoir, and the lower wall of the housing;

b) positioning the lower wall of the injection port adjacent to tissue;

c) attaching the injection port to tissue by moving each of the at least one integral retention member from the undeployed position to a deployed position within tissue;

d) installing a gastric band in the patient;

e) coupling the gastric band and the reservoir of the injection port with a conduit, wherein the gastric band, the conduit, and the reservoir form a closed fluid circuit;

f) inserting a needle in the septum; and

g) adjusting an amount of fluid in the gastric band using the needle inserted in the septum.

26. A method as recited in claim 25, wherein the step of attaching the injection port further comprises:

rotating each of the one or more retention members.

27. A method as recited in claim 25, wherein the at least one retention members comprises two or more retention members integrally attached to the housing, and the step of attaching the injection port comprises moving at least two of the two or more retention members concurrently.