Implantable hemodialysis access device

• US 7,803,143 B2
• Filed: 11/08/2005
• Issued: 09/28/2010
• Est. Priority Date: 04/26/2000
• Status: Expired due to Term

• Current Assignee: Versago Vascular Access, Inc.
• Original Assignee: Std Med, Inc.
• Inventors: Tallarida, Steven J., Ettlinger, Mark
• Primary Examiner(s): Lucchesi; Nicholas D
• Assistant Examiner(s): SHUMATE, VICTORIA PEARL
• Application Number:
  US11/269,098
• Publication Number:
  US 20060058744A1
• Time in Patent Office: 1,785 Days
• Field of Search: 604/288.01, 604/288.02, 604/288.04, 604/891.1, 604/288.03
• US Class Current: 604/288.02
• CPC Class Codes: A61M 2039/0072 Means for increasing tightness of the septum, e.g. compression rings, special materials, special constructions
• CPC Class Codes: A61M 2039/0211 with multiple chambers in a single site
• CPC Class Codes: A61M 2039/0223 having means for anchoring the subcutaneous access site
• CPC Class Codes: A61M 2039/0226 having means for protecting the interior of the access site from damage due to the insertion of a needle
• CPC Class Codes: A61M 2039/0232 having means for facilitating the insertion into the body
• CPC Class Codes: A61M 2039/0238 having means for locating the implanted device to insure proper injection, e.g. radio-emitter, protuberances, radio-opaque markers
• CPC Class Codes: A61M 2205/582 by tactile feedback
• CPC Class Codes: A61M 2205/583 by visual feedback
• CPC Class Codes: A61M 2205/60 with identification means
• CPC Class Codes: A61M 2205/6036 characterised by physical shape, e.g. array of activating switches
• 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 hemodialysis port includes a housing and a septum, the housing being formed from a flexible material and including a plurality of chambers. The chambers are fluidly interconnected with one another by integrated outlet passageways. Each of the chambers includes a sidewall portion and a funnel portion tapering from the sidewall portion. The septum encloses each of the chambers.

Claims

1. An implantable access port comprising:

a housing defining a plurality of chambers, each of said plurality of chambers comprising an opening and an integrated outlet passageway, said plurality of chambers being fluidly interconnected with one another via said integrated outlet passageways;

an outlet tube defining a single passageway having a first end region and a second end region disposed generally opposite each other, wherein said first end region is fluidly coupled to said integrated outlet passageways and said second end region is configured to deliver fluid from said plurality of chambers to a predetermined location; and

a plurality of septa configured to enclose a respective one of said openings of said plurality of chambers, each of said plurality of septa comprising an exterior, generally concaved surface configured to allow a needle to pass through into a respective one of said chamber, wherein a center region of the septum is the thinnest portion of the septum.

2. An implantable access port according to claim 1, wherein each of said plurality of chambers comprise a sidewall and a funnel portion tapering away from said sidewall.

3. An implantable access port according to claim 1, wherein said housing comprises a flexible material.

4. An implantable access port according to claim 1, further comprising a single outlet tube coupled to each of said chambers.

5. An implantable access port according to claim 1, wherein each of said plurality of chambers comprise an insert covering at least a portion of a bottom of each of said chambers.

6. An implantable access port according to claim 1, wherein said plurality of chambers are consecutively interconnected.

7. An implantable access port according to claim 1, further comprising a spring mechanism disposed between said sidewalls and said septum and applying an inward force on said septum.

8. An implantable access port comprising:

a housing defining a plurality of chambers, said chambers fluidly interconnected with one another by integrated outlet passageways, each of said chambers comprising an opening, a sidewall portion and a funnel portion tapering from said sidewall portion;

an outlet tube defining a single passageway having a first end region and a second end region disposed generally opposite each other, wherein said first end region is fluidly coupled to said integrated outlet passageways and said second end region is configured to deliver fluid from said plurality of chambers to a predetermined location; and

a plurality of septa configured to enclose a respective one of said plurality of chambers, each of said plurality of septa comprising an exterior, generally concaved surface configured to allow a needle to pass through into a respective one of said chamber, wherein a center region of the septum is the thinnest portion of the septum.

9. An implantable access port according to claim 8, wherein said integrated outlet passageways connect to a single outlet tube.

10. An implantable access port according to claim 8, further comprising an insert covering at least a portion of each of said funnel portions.

11. An implantable access port according to claim 8, wherein said housing comprises a flexible material.

12. An implantable access port according to claim 8, wherein said plurality of chambers are consecutively interconnected.

13. An implantable access port according to claim 8, further comprising a spring mechanism disposed between said sidewalls and said septum and applying an inward force on said septum.

14. A method for performing hemodialysis comprising:

inserting an access port comprising;

a housing defining a plurality of chambers, each of said plurality of chambers comprising an opening and an integrated outlet passageway, said plurality of chambers being fluidly interconnected with one another via said integrated outlet passageways;

an outlet tube defining a single passageway having a first end region and a second end region disposed generally opposite each other, wherein said first end region is fluidly coupled to said integrated outlet passageways and said second end region is configured to deliver fluid from said plurality of chambers to a predetermined location; and

a plurality of septa configured to enclose a respective one of said openings of said plurality of chambers, wherein each septum comprises an exterior, generally concaved surface configured to allow a needle to pass through into a respective one of said chamber, wherein a center region of the septum is thinner than a perimeter of the septum;

inserting a needle into one of said chambers of said access port; and

inserting a cannula into said port.

15. A method according to claim 14, wherein inserting said needle into one of said chambers comprises inserting a needle and a sheath through the skin of the patient, said method further comprising removing said needle from said sheath, leaving said sheath in said port.

16. A method according to claim 15, wherein inserting said cannula comprises inserting a cannula and obturator into said sheath and drawing blood from said port via said cannula.

17. A method according to claim 16, further comprising removing said cannula and obturator and said sheath form said port.

18. A method according to claim 14, further comprising inserting a guide wire through said needle and into said port and removing said needle from said port.

19. A method according to claim 18, wherein inserting said cannula comprises inserting said cannula over said guide wire and into said port.

20. A method according to claim 19, wherein said cannula comprises an introducer.