Implantable hemodialysis access device

• US 20010056266A1
• Filed: 04/26/2001
• Published: 12/27/2001
• Est. Priority Date: 04/26/2000
• Status: Active Grant

• Current Assignee: Versago Vascular Access, Inc.
• Original Assignee: Std Med, Inc.
• Inventors: Tallarida, Steven J., Ettlinger, Mark
• Granted Patent: US 6,962,577 B2
• Time in Patent Office: Days
• 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

A hemodialysis port comprising a flexible housing member defining one or more ports. Each port has a selectively-permeable septum member disposed thereon to permit medical devices, for example, Huber needles, sheath and/or dilators to be inserted therein. At the interface between the housing and the septum, a spring member is provided to provide an axial force on the septum which seals the puncture created by the aforementioned medical devices. In one exemplary embodiment, the hemodialysis access port of the present invention is comprised of a plurality of ports designed for multiple hemodialysis treatments over the life of the port. In other exemplary embodiments, the bottom of each port may comprise a needle stop insert formed of, for example, metal, titanium, stainless steel or ceramic.

Claims

1. A hemodialysis port comprising:

a housing defining a plurality of interconnected chambers, each said chamber having a bottom portion and sidewall portions;

a septum attached to said side wall portions of each said chamber enclosing said chamber; and

a spring mechanism disposed between said sidewalls and said septum and applying an inward force on said septum.

2. A port as claimed in

claim 1

, wherein said septum comprises a material having a durometer between 30 and 55.

3. A port as claimed in

claim 1

, wherein said spring mechanism having sufficient force to close an opening in said septum caused by a needle or other medical instrument.

4. A port as claimed in

claim 1

, said bottom portion further comprising a titanium insert covering at least a portion of said bottom portion of said port.

5. A port as claimed in

claim 1

, wherein said housing comprising a flexible material having a flexibility for a particular patient'"'"'s anatomical structure.

6. A port as claimed in

claim 1

, wherein said septum comprising silicon rubber.

7. A port as claimed in

claim 1

, wherein said ports are connected together to a manifold to provide a single inlet/outlet to and from said ports.

8. A method for performing hemodialysis, comprising the steps of:

inserting at least one multi-port device under the skin of a patient;

inserting a needle and sheath through said skin and into one of said ports of said multi-port device;

removing said needle from within said sheath, leaving said sheath in said port; and

inserting a cannula and obturator into said sheath and drawing from said cannula blood from within said port.

9. A method as claimed in

claim 8

, said method further comprising the step of removing said cannula and obturator and said sheath from said port and said skin.

10. A hemodialysis method comprising the steps of:

inserting a multi-port device under the skin of a patient;

inserting a hollow needle into one of the ports of said multi-port device through the skin of said patient;

inserting a guidewire through said needle and into said port;

removing said needle from said port and said patient; and

inserting an introducer over said guidewire and into said port.