Implantable port

• US 20070073250A1
• Filed: 07/08/2005
• Published: 03/29/2007
• Est. Priority Date: 07/08/2005
• Status: Abandoned Application

• Current Assignee: Patient Access Solutions, LLC
• Original Assignee: Patient Access Solutions, LLC
• Inventors: Schneiter, James
• Application Number:
  US11/177,932
• Publication Number:
  US 20070073250A1
• Time in Patent Office: Days
• US Class Current: 604/288.10
• CPC Class Codes: A61M 2039/0081 Means for facilitating introduction of a needle in the septum, e.g. guides, special construction of septum
• CPC Class Codes: A61M 2039/0223 having means for anchoring the subcutaneous access site
• CPC Class Codes: A61M 27/006 Cerebrospinal drainage; Accessories therefor, e.g. valves
• 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 implantable port for use in the withdrawal and/or delivery of a fluid to a patient is provided. The port has a body portion having a generally curved shaped reservoir. A septum extends across the reservoir and a stem extends from the reservoir to an external position. A fluid passageway is formed from the reservoir through the stem adjacent the septum.

Claims

1. An implantable port for use in the withdrawal and/or delivery of a fluid to a patient, said port comprising:

a) a body portion having a generally hemispheric shaped reservoir;

b) a septum extending across the reservoir; and

c) a stem extending from the reservoir to an external position and forming a fluid passageway therein, the fluid passageway being located adjacent the septum.

2. The port of claim 1 wherein the stem includes an intermediate portion and an end portion, the intermediate portion and the end portion forming an angle between 45-135 degrees.

3. The port of claim 2 wherein the intermediate portion and the end portion form an angle of about 75 degrees.

4. The port of claim 3 wherein the reservoir has a generally continuous uninterrupted surface.

5. The port of claim 3 wherein the stem includes a conical-shaped throat portion.

6. The port of claim 3 wherein the reservoir has a polished surface coating.

7. The port of claim 6 wherein the reservoir has a plated surface coating.

8. The port of claim 3 wherein the septum includes a concave bottom portion.

9. The port of claim 8 wherein the septum has a curved top portion.

10. A port for use in the withdrawal and/or delivery of a fluid to a patient, the port comprising:

a) a body portion having an internal reservoir formed by a smoothly curved interior wall;

b) the septum extending across the reservoir; and

c) a stem extending from the reservoir to an external position and forming a fluid passageway therein, the fluid passageway being located directly adjacent the septum.

11. The port of claim 10 wherein the stem includes an intermediate portion and an end portion, the intermediate portion and the end portion forming an angle between 45-135 degrees.

12. The port of claim 11 wherein the intermediate portion and the end portion form an angle of about 75 degrees.

13. The port of claim 12 wherein the reservoir has a generally continuous uninterrupted surface.

14. The port of claim 12 wherein the stem includes a conical-shaped throat portion.

15. The port of claim 14 wherein the reservoir has a polished surface coating.

16. The port of claim 15 wherein the reservoir has a plated surface coating.

17. The port of claim 13 wherein the septum includes a concave bottom portion.

18. The port of claim 17 wherein the septum has a curved top portion.

19. A port for use in the withdrawal and/or delivery of a fluid to a patient having an increased flushing effectiveness, the port comprising:

a) a body portion having an internal reservoir, the reservoir characterized by a generally continuous curved surface and having a bottom;

b) a septum extending across the reservoir; and

c) a stem extending from the reservoir to an external position and forming a fluid passageway therein, the fluid passageway being located at a position substantially spaced apart from the bottom of the reservoir.

20. The port of claim 19 wherein the stem includes an intermediate portion and an end portion, the intermediate portion and the end portion forming an angle between 45-135 degrees.

21. The port of claim 20 wherein the intermediate portion and the end portion form an angle of about 75 degrees.

22. The port of claim 21 wherein the reservoir has a generally continuous uninterrupted surface.

23. The port of claim 22 wherein the stem includes a conical-shaped throat portion.

24. The port of claim 23 wherein the reservoir has a plated and polished surface coating.

25. The port of claim 24 wherein the septum includes a concave bottom portion.

26. A method for flushing a port for use in the withdrawal and/or delivery of a fluid to a patient, the method comprising:

a) providing a syringe of a flushing solution with a non-coring needle;

b) providing a port having an internal reservoir, a septum extending over the reservoir, and a fluid passageway extending from the reservoir to an external position from a location adjacent the septum and forming a fluid passageway therein, the internal reservoir having a volume of 0.4 cc or less; and

c) infusing the flushing solution from the syringe and through the needle into the reservoir in order to flush the reservoir of the port.

27. A method for flushing a port for use in the withdrawal and/or delivery of a fluid to a patient, the method comprising:

a) providing a syringe of a flushing solution with a non-coring needle;

b) providing a port having an internal reservoir with a generally smooth curved surface having a bottom, a septum extending over the reservoir, and a stem extending from the reservoir to an external position and forming a fluid passageway therein, the stem being located in a position substantially spaced apart from the bottom of the reservoir; and

c) infusing the flushing solution from the syringe and through the needle into the reservoir in order to flush the reservoir of the port.

28. A method for the implantation of a port for use in the withdrawal and/or delivery of a fluid to a patient, the method comprising:

a) providing a port having an internal reservoir, a septum extending over the reservoir, and a stem extending from the reservoir to an external position and forming a fluid passageway therein, the stem having an intermediate portion and an angled end portion; and

b) implanting the port subcutaneously in the chest of a patient, the port being oriented such that at least a portion of the stem extends downward when the patient is in a vertical position.

29. A method for the implantation of a port for use in the withdrawal and/or delivery of a fluid to an ear of a patient using a catheter, the method comprising:

a) providing a port having an internal reservoir, a septum extending over the reservoir, and a stem extending from the reservoir to an external position and forming a fluid passageway therein; and

b) implanting the port subcutaneously adjacent an ear of a patient.

30. A method for the implantation of a port for use in the withdrawal and/or delivery of a fluid to a brain of a patient using a catheter, the method comprising:

a) providing a port having an internal reservoir, a septum extending over the reservoir, and a stem extending from the reservoir to an external position and forming a fluid passageway therein; and

b) implanting the port subcutaneously adjacent the brain of a patient and connecting the port to the catheter, the catheter having terminal end located in the brain of the patient.