Bone supported vascular access port

• US 20070179456A1
• Filed: 01/30/2007
• Published: 08/02/2007
• Est. Priority Date: 01/30/2006
• Status: Active Grant

• Current Assignee: Bradley J. Glenn
• Original Assignee: Bradley J. Glenn
• Inventors: Glenn, Bradley J.
• Granted Patent: US 7,608,065 B2
• Time in Patent Office: Days
• US Class Current: 604/288.10
• CPC Class Codes: A61B 17/3472 for bones, e.g. intraosseus injections
• CPC Class Codes: A61M 2039/0223 having means for anchoring the subcutaneous access site
• CPC Class Codes: A61M 2039/025 through bones or teeth, e.g. through the skull
• CPC Class Codes: A61M 2039/0258 for vascular access, e.g. blood stream access
• CPC Class Codes: A61M 2039/0261 Means for anchoring port to the body, or ports having a special shape or being made of a specific material to allow easy implantation/integration in the body
• CPC Class Codes: A61M 2039/027 having a particular valve, seal or septum
• CPC Class Codes: A61M 2039/0276 for introducing or removing fluids into or out of the body
• CPC Class Codes: A61M 2039/0279 for introducing medical instruments into the body, e.g. endoscope, surgical tools
• CPC Class Codes: A61M 2202/10 Bone-marrow
• CPC Class Codes: A61M 39/0208 Subcutaneous access sites for injecting or removing fluids transcutaneous access sites A61M39/0247; implantable infusion devices A61M5/14276
• CPC Class Codes: A61M 39/0247 Semi-permanent or permanent transcutaneous or percutaneous access sites to the inside of the body peritoneal dialysis catheters A61M1/285; tracheostomy devices A61M16/0465; measuring pressure within the body A61B5/03; colostomy devices A61F5/445; gastrotomy feeding tubes A61J15/0015; means for fixing a feeding tube outside of the body A61J15/0053
• CPC Class Codes: A61M 39/04 having pierceable self-sealing members

Abstract

A vascular access port is disclosed for subcutaneous implantation. The port is particularly adapted to be affixed to a bone to securely hold the port in position, to assist medical personnel in finding the port and to decrease a visibility of the port. The port has a chamber therein which is accessed by a needle through a septum adjacent the chamber. The chamber is placed into fluid communication with the vascular structure of the patient, such as through catheter tubing. The chamber is surrounded by a body with an outer surface which is preferably fitted with threads to facilitate secure but removable attachment of the port within a hole in the bone where the port is to be implanted.

Claims

1. An implantable port for providing vascular access, and which is supported by a bone, comprising in combination:

a chamber;

said chamber adapted to be placed into fluid communication with a vascular structure;

a septum;

said septum located adjacent at least one side of said chamber;

said septum adapted to be penetrated by a needle and reseal after the needle is removed;

a collar surrounding said septum;

said collar adapted to hold said septum adjacent said chamber; and

a bone engagement surface on said collar, said bone engagement surface adapted to be coupled to a bone to which the port is to be supported.

2. The port of claim 1 wherein said collar includes an outer surface which is substantially cylindrical, and wherein said bone engagement surface includes threads on said outer surface of said collar, said threads adapted to engage sides of a hole within a bone into which the port is to be located and supported.

3. The port of claim 2 wherein said threads on said outer surface of said collar are self-tapping in nature.

4. The port of claim 2 wherein said collar includes a face surrounding an aperture, said aperture providing access to said septum through said collar, said face having at least one slot therein, said slot adapted to engage with a tool for rotating said port and threading said threads on said outer surface of said collar into said hole in said bone.

5. The port of claim 1 wherein said collar includes an outer surface which is roughened in texture, such that said outer surface is adapted to encourage support of said port by said bone.

6. The port of claim 5 wherein said outer surface is generally cylindrical in form.

7. The port of claim 6 wherein said outer surface includes threads thereon, said threads adapted to facilitate secure positioning of said port into a hole in a bone to which said port is to be supported, as well as removal of said port from said bone when said port is to be removed.

8. The port of claim 1 wherein said port includes a substantially rigid base separate from said collar, said base having said chamber located therein, said septum adapted to be interposed between said base and said collar, said collar adapted to be attached to said base with said septum trapped between said collar and said base with said septum overlying said chamber, said collar having an aperture, said aperture adapted to provide access for a needle to said septum on a side of said septum opposite said chamber.

9. The port of claim 8 wherein said base exhibits a generally cylindrical form and said collar exhibits a generally cylindrical form with said base having male threads thereon complemental with female threads formed on said collar, such that said collar threads onto said base to secure said collar to said base with said septum between said collar and said base.

10. The port of claim 8 wherein said collar is adapted to slide over said base with a friction fit between said collar and said base such that said collar is held onto said base with said septum trapped between said collar and said base, said collar and said base sized to compress said septum between said collar and said base, such that said septum is pre-compressed within said port.

11. An implantable access port comprising in combination:

a body having a chamber therein;

an aperture in said body, said aperture adapted to provide access into said chamber for a needle;

a septum between said aperture and said chamber;

said chamber adapted to be coupled to a vascular structure with fluid communication between said chamber and the vascular structure; and

said body adapted to be affixed to a bone, such that said port is held in fixed position relative to said bone.

12. The access port of claim 11 wherein said body includes a substantially cylindrical outer surface, said outer surface having threads thereon, said threads adapted to thread into a hole in a bone to which said body of said port is to be affixed.

13. The access port of claim 11 wherein said body includes an outer surface, said outer surface sized and shaped to fit into a hole in a bone, the hole having a size and shape adapted to allow said body of said port to reside therein.

14. The access port of claim 13 wherein said outer surface of said body includes threads thereon.

15. The access port of claim 14 wherein said outer surface of said body exhibits a roughened texture such that said outer surface is adapted to encourage bone re-ossification.

16. The access port of claim 11 wherein said body includes at least two rigid portions including a base portion and a collar portion, said septum interposed between said base portion and said collar portion.

17. The access port of claim 16 wherein said chamber is located primarily within said base and said septum is located primarily within said collar.

18. The access port of claim 17 wherein said septum is compressed between said base and said collar.

19. The access port of claim 18 wherein said chamber in said base includes an outlet leading to an extension extending away from a lower wall of said base, said extension having a hollow conduit passing therethrough, said extension adapted to be coupled to tubing, said tubing adapted to extend at least partially toward a vascular structure to which said chamber is to be placed into fluid communication.

20. A method for fixing a subcutaneous vascular access port at an implantation site, including the steps of:

providing an implantable access port having a body having a chamber therein;

an aperture in the body, the aperture adapted to provide access into the chamber for a needle;

a septum between the aperture and the chamber; and

the chamber adapted to be coupled to a vascular structure with fluid communication between the chamber and the vascular structure;

attaching the port to a bone at the implantation site; and

coupling the chamber to a vascular structure with fluid communication therebetween.

21. The method of claim 20 wherein said attaching step includes the step of forming a hole passing through the bone at the implantation site, the hole at least as large as an outer surface of the body of the port;

and

locating the port within the hole.

22. The method of claim 21 including the further steps of:

forming threads on an outer surface of said body; and

rotating said port with said threads engaging sides of the hole in the bone until said body of said port is at least partially affixed to said bone.

23. The method of claim 21 including the further steps of configuring the chamber to be coupleable to a tube extending away from said chamber with fluid communication between an interior of said tube and said chamber;

and

extending said tube out of a first end of the hole in the bone and aligning the aperture of the port with a second end of the hole in the bone opposite the first end of the hole in the bone.