Stabilized elongate implantable vascular access device

• US 20080249509A1
• Filed: 04/07/2008
• Published: 10/09/2008
• Est. Priority Date: 04/05/2007
• Status: Active Grant

• Current Assignee: Stealth Therapeutics, Inc.
• Original Assignee: Stealth Therapeutics, Inc.
• Inventors: Glenn, Bradley J.
• Granted Patent: US 8,083,723 B2
• Time in Patent Office: Days
• US Class Current: 604/539
• CPC Class Codes: A61M 2039/0223 having means for anchoring the subcutaneous access site
• CPC Class Codes: A61M 2039/0232 having means for facilitating the insertion into the body
• 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 vascular access port is described that is elongate in form. A distal end is coupled to a tube which leads into a body lumen. A proximal end has a head thereon with a septum which can be repeatedly penetrated by a needle and reseal, for repeated administration of medications or other compositions through the port and into the body of the patient. A wing is attached to the body that has two positions including a streamlined first position for implantation and a wider second position for stabilization of the port after implantation. A stay is preferably also provided to abut the wing when in the second position to keep the wing in the second position when fully deployed.

Claims

1. :

A subcutaneous port for providing access to a body lumen, the port comprising in combination;

an elongate body having a hollow interior extending between ends thereof;

a head adjacent one of said ends of said body;

said head including a chamber communicating with said hollow interior of said elongate body;

a septum coupled to said head and adjacent said chamber, said septum adapted to be penetrated by a needle passing through the skin;

said elongate body adapted to be coupled, at least indirectly, to a body lumen; and

a movable wing coupled to said elongate body, said wing having at least one tip, said tip having at least two positions including a first position and a second position relative to said body, said first position closer to said body than said second position.

2. :

The port of claim 1 wherein said elongate body includes an outlet end opposite said head, said outlet end adapted to be coupled, at least indirectly, to the body lumen.

3. :

The port of claim 1 wherein said wing is located at an intermediate position between said ends of said elongate body.

4. :

The port of claim 3 wherein said wing is located closer to a middle of said elongate body than to either of said ends of said body.

5. :

The port of claim 3 wherein said wing is located on an underside of said elongate body adapted to be oriented most distant from skin beneath which the port is adapted to be implanted.

6. :

The port of claim 1 wherein said at least one wing is streamlined such that it passes more easily into a subcutaneous space than being pulled out of the subcutaneous space.

7. :

The port of claim 1 wherein said wing is adapted to rotate between said first position and said second position and a stay is adapted to be interposed against said wing to hold said wing in said second position.

8. :

The port of claim 7 wherein said stay includes a snap stay adapted to snap onto said elongate body and surrounding at least a portion of said elongate body adjacent said wing with said snap stay including at least one downwardly extending finger adapted to abut a portion of the wing which resists the wing from rotating from said second position to said first position.

9. :

The port of claim 7 wherein said stay includes a longitudinal guide rail on said elongate body and extending longitudinally on said elongate body with at least one end of said rail adjacent said wing, and a slide stay mounted on said rail and adapted to slide along said rail and into abutment with said wing to restrain said wing from rotating from said second position to said first position.

10. :

The port of claim 1 wherein said body includes a hole passing laterally therethrough, said hole adapted to receive said wing in the form of a rod therein, said rod extending at least partially lateral to a long axis of said elongate body.

11. :

A method for reliably and repeatedly accessing a body lumen through a subcutaneous port, the method including the steps of;

providing a port having an elongate body having a hollow interior extending between ends thereof, a head adjacent one of the ends of the body, the head including a chamber communicating with the hollow interior of the elongate body, a septum coupled to the head and adjacent the chamber, the septum adapted to be penetrated by a needle passing through the skin, the elongate body adapted to be coupled, at least indirectly, to a body lumen, and a movable wing coupled to the elongate body, the wing having at least one tip, the tip having at least two positions including a first position and a second position relative to the body, the first position closer to the body than the second position;

forming an incision adjacent where the port is desired to be implanted;

inserting the port into the desired position subcutaneously; and

coupling a portion of the body at least indirectly to the body lumen to be accessed.

12. :

The method of claim 11 including the further step of rotating the wing from the first position to the second position.

13. :

The method of claim 12 including the further step of manipulating a stay to abut the wing and resist rotation of the wing from the second position to the first position.

14. :

The method of claim 12 including the further steps of;

pushing on a portion of the elongate body on a side of the wing opposite the head through the skin to cause portions of the elongate body on a side of the wing opposite where pushing is occurring to be moved toward the skin; and

passing a needle through the skin and into the septum within the head of the elongate body after the head has been raised for easy access by said pushing step.

15. :

A subcutaneous body lumen access port comprising in combination;

an elongate body having a hollow interior extending substantially axially therethrough, said body having a length at least five times greater than its width;

one of said ends of said interior adapted to be coupled to a body lumen with the other of said ends having a septum adjacent thereto, said septum adapted to be penetrated by a needle to facilitate direction of fluids into said hollow interior; and

a wing coupled to said elongate body and interposed between said ends, said wing adapted to be moved from a first position to a second position with said body having a narrower cross-section when said wing is in said first position than said second position.

16. :

The port of claim 15 wherein a stay is movably locatable adjacent said wing to resist movement of said wing from said second position to said first position.

17. :

The port of claim 15 wherein said wing is rotatably coupled to said elongate body.

18. :

The port of claim 17 wherein said wing is rotatably supported by said elongate body on a side of said elongate body adapted to be located opposite the skin.

19. :

The port of claim 18 wherein said septum is located within a head at one of said ends of said elongate body, said head angled up from a central axis of said body opposite said wing, with said septum adapted to be accessed substantially axially at said head.

20. :

The port of claim 15 wherein said wing is elongate in form and passes through a hole oriented lateral to a long axis of said elongate body, said hole passing through said elongate body laterally separate from said hollow interior of said elongate body, said wing adapted to be affixed to said hole in said elongate body with a tip of said wing spaced laterally from said elongate body.