BURR HOLE PLUG DESIGNS

• US 20090112327A1
• Filed: 10/24/2008
• Published: 04/30/2009
• Est. Priority Date: 10/26/2007
• Status: Abandoned Application

• Current Assignee: Boston Scientific Neuromodulation Corporation (Boston Scientific Corporation)
• Original Assignee: Boston Scientific Neuromodulation Corporation (Boston Scientific Corporation)
• Inventors: Gagnon, Jeff, Digiore, Andrew, Carbunaru, Rafael, Barker, John Michael, Lane, Courtney, Makous, James C., Jaax, Kristen, Schleicher, Brett, Swoyer, John, Geroy, Jesse, Whitehurst, Todd, Ferrell, Terry, Garai, Ellis, Flowers, Matthew
• Application Number:
  US12/258,382
• Publication Number:
  US 20090112327A1
• Time in Patent Office: Days
• US Class Current: 623/17.190
• CPC Class Codes: A61B 17/0057 Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect sutures A61B17/04; closing rectum or urethra near body surface A61F2/0009
• CPC Class Codes: A61B 2090/103 Cranial plugs for access to brain
• CPC Class Codes: A61B 90/10 for stereotaxic surgery, e.g. frame-based stereotaxis
• CPC Class Codes: A61N 1/0534 Electrodes for deep brain stimulation
• CPC Class Codes: A61N 1/0539 Anchoring of brain electrode systems, e.g. within burr hole

Abstract

A burr hole plug comprises a plug base including a flange configured for being mounted around a burr hole, an aperture through which an elongated medical device may pass, and tabs configured for extending within the cranial burr hole to center the plug base relative to the cranial burr hole. The burr hole plug further comprises a retainer configured for being mounted within the aperture of the plug base to secure the medical device. A method may comprise locating the plug base within a burr hole, such that the tabs are disposed within the burr hole to center the plug base relative to the cranial burr hole, introducing the elongated medical device through the cranial burr hole and into the brain tissue of the patient, mounting the retainer within the aperture of the plug base, and actuating the retainer to secure the medical device.

Claims

1. A cranial burr hole plug, comprising:

a plug base including a flange configured for being mounted around a cranial burr hole, an aperture through which an elongated medical device exiting the burr hole may pass, and a plurality of tabs configured for extending within the cranial burr hole to center the plug base relative to the cranial burr hole; and

a retainer configured for being mounted within the aperture of the plug base to secure the medical device.

2. The burr hole plug of claim 1, wherein the aperture of the plug base is circular.

3. The burr hole plug of claim 1, wherein the greatest dimension of the aperture in equal to or less than 25 mm.

4. The burr hole plug of claim 1, wherein the plug base includes an open slot configured for laterally receiving the medical device.

5. The burr hole plug of claim 1, wherein the plurality of tabs comprises at least three tabs.

6. The burr hole plug of claim 1, wherein the tabs are disposed on a bottom surface of the plug base flange.

7. The burr hole plug of claim 2, wherein the tabs are coincident with the aperture.

8. The burr hole plug of claim 2, wherein the retainer is configured for being removably mounted within the aperture of the plug base.

9. The burr hole plug of claim 2, wherein the plug base includes at least one inner annular ledge configured for supporting the retainer when mounted within the aperture of the plug base.

10. The burr hole plug of claim 2, wherein the retainer further includes a retainer support and a slot formed in the retainer support for receiving the medical device.

11. The burr hole plug of claim 10, wherein the retainer includes a clamping mechanism configured for applying a clamping force to the medical device received within the slot.

12. The burr hole plug of claim 11, wherein the clamping mechanism includes a clamping bar configured for engaging the medical device, and a locking element configured for locking the clamping bar relative to the retainer support when the medical device is secured.

13. The burr hole plug of claim 11, wherein the retainer support is a disk.

14. The burr hole plug of claim 1, further comprising fasteners configured for anchoring the plug base to a cranium of a patient.

15. The burr hole plug of claim 1, further comprising a cap configured for being mounted to the plug base over the retainer.

16. The burr hole plug of claim 14, wherein the plug base has an exit groove configured for seating the medical device, and wherein the cap is configured for firmly securing the medical device within the exit groove when the cap is mounted to the plug base.

17. A method of performing a medical procedure on a patient, comprising:

providing a plug base including a flange, an aperture, and a plurality of tabs;

locating a plug base within a cranial burr hole, such that the flange is disposed about the cranial burr hole, and the tabs are disposed within the burr hole to center the plug base relative to the cranial burr hole;

anchoring the plug base relative to the cranial burr hole;

introducing an elongated medical device through the cranial burr hole and into the brain tissue of the patient, wherein the medical device exits the cranial burr hole through the aperture of the plug base;

mounting a retainer within the aperture of the plug base; and

actuating the retainer to secure the medical device.

18. The method of claim 17, wherein the tabs are equally spaced apart around the circumference of the cranial burr hole.

19. The method of claim 17, wherein the tabs are disposed on a bottom surface of the plug base flange.

20. The method of claim 17, wherein the medical device is an electrical lead.

21. The method of claim 17, wherein the plug base includes an open slot form in the plug base flange, the method further comprising laterally introducing the medical device within the slot.

22. The method of claim 21, wherein the plug base is mounted around the cranial burr hole after the medical device is introduced through the burr hole into the brain tissue of the patient.

23. The method of claim 17, further comprising mounting a cap to the plug base over the retainer.

24-171. -171. (canceled)