Anchoring of a medical device component adjacent a dura of the brain or spinal cord

• US 20060173522A1
• Filed: 01/25/2006
• Published: 08/03/2006
• Est. Priority Date: 01/31/2005
• Status: Abandoned Application

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Osorio, Ivan
• Application Number:
  US11/339,108
• Publication Number:
  US 20060173522A1
• Time in Patent Office: Days
• US Class Current: 607/116
• CPC Class Codes: A61B 5/4094 Diagnosing or monitoring seizure diseases, e.g. epilepsy
• CPC Class Codes: A61B 5/6864 Burr holes
• CPC Class Codes: A61N 1/0531 Brain cortex electrodes
• CPC Class Codes: A61N 1/0539 Anchoring of brain electrode systems, e.g. within burr hole
• CPC Class Codes: A61N 1/0553 Paddle shaped electrodes, e.g. for laminotomy

Abstract

A method and implantable medical device system capable of being anchored in a head or spinal cord of a patient. During implant, the dura of the patient is partially removed and the medical device component is placed on one side of the dura. The medical device component contains one or more anchors that mate with one or more nuts placed on the other side of the dura. The medical device component is thereby attached to the dura in a substantially fixed position relative to the head or spinal cord.

Claims

1. A method of anchoring a medical device component in a patient comprising:

(a) placing the medical device component adjacent a first side of a dura of the patient, wherein the device component has at least one first mating element;

(b) placing at least one second mating element on a second side of the dura; and

(c) fastening the at least one first mating element with the second mating element, wherein the dura is situated between the at least one first and second mating elements to thereby anchor the medical device component to the dura.

2. The method of claim 1 wherein the medical device component is an electrical lead.

3. The medical device system of claim 1 wherein the medical device component is an electrode.

4. The method of claim 1 wherein the medical device component is an implantable pulse generator.

5. The method of claim 1 wherein the medical device component is a catheter.

6. The method of claim 1 wherein the medical device component is an implantable pump.

7. The method of claim 1 wherein the medical device component is a passive release device.

8. The method of claim 1 wherein placing the at least one second mating element comprises cutting a portion of the dura to facilitate subdural implant of the at least one second mating element.

9. The method of claim 8 wherein placing the medical device component comprises epidurally implanting the medical device component.

10. The method of claim 8 further comprising replacing the removed portion of the dura.

11. The method of claim 1 wherein the first side of the dura is an epidural side and the second side of the dura is a subdural side.

12. The method of claim 1 wherein the first side of the dura is a subdural side and the second side of the dura is an epidural side.

13. The method of claim 1 wherein the at least one first mating element is a male connector and the at least one second mating element is a female connector.

14. The method of claim 1 wherein the at least one first mating element is a female connector and the at least one second mating element is a male connector.

15. The method of claim 1 wherein at least one of the mating elements is adapted to be detectable by imaging.

16. A medical device system comprising:

(a) a medical device component adapted to be attached to a dura of a patient;

(b) at least one first mating element associated with a side of the medical device component; and

(c) at least one second mating element adapted to being fastened to the at least one first mating element, wherein the dura is situated between the at least one first and second mating elements to thereby anchor the medical device component to the dura.

17. The medical device system of claim 16 wherein the medical device component is an electrical lead.

18. The medical device system of claim 16 wherein the medical device component is an electrode.

19. The medical device system of claim 16 wherein the medical device component is an implantable pulse generator.

20. The medical device system of claim 16 wherein the medical device component is a catheter.

21. The medical device system of claim 16 wherein the medical device component is an implantable pump.

22. The medical device system of claim 16 wherein the medical device component is a passive release device.

23. The medical device system of claim 16 wherein the medical device component is adapted to be subdurally implanted.

24. The medical device system of claim 23 wherein the at least one second mating element is adapted to be epidurally implanted.

25. The medical device system of claim 16 wherein the medical device component is adapted to be epidurally implanted.

26. The medical device system of claim 25 wherein the at least one second mating element is adapted to be subdurally implanted.

27. The medical device system of claim 16 wherein the at least one first mating element is a male connector and the at least one second mating element is a female connector.

28. The medical device system of claim 16 wherein the at least one first mating element is a female connector and the at least one second mating element is a male connector.

29. The medical device system of claim 16 wherein the at least one first mating element is selected from the group consisting of an anchor, a nut, and a screw.

30. The medical device system of claim 16 wherein the at least one second mating element is selected from the group consisting of an anchor, a nut, and a screw.

31. The medical device system of claim 16, wherein at least one mating element is detectable through imaging.

32. The medical device system of claim 16 further comprising a lead having a distal end coupled to the medical device component.

33. The medical device system of claim 32 further comprising an implantable pulse generator coupled to a proximal end of the lead.

34. The medical device system of claim 16 further comprising a catheter having a distal end coupled to the medical device component.

35. The medical device system of claim 34 further comprising an implantable pump coupled to a proximal end of the catheter.

36. The medical device system of claim 16 wherein at least one of the mating elements is adapted to be detectable through imaging.

37. The medical device system of claim 16 wherein the at least one first and second mating elements are adapted to be detachable relative to each other.

38. An apparatus for attaching a medical device component to a dura comprising:

(a) a body having a first portion and a second portion;

(b) first and second mating elements along the first portion of the body and adapted to attach to a dura; and

(c) a third mating element along the second portion of the body and adapted to attach to an associated mating element attached to a medical device component.

39. A method of anchoring a medical device component in a patient comprising:

(a) removing a portion of a dura of the patient forming an exposed portion, wherein the exposed portion has a dura perimeter;

(b) placing the medical device component adjacent the exposed portion, wherein the medical device component has a device perimeter; and

(c) attaching the device perimeter of the medical device component to the dura perimeter to thereby substantially close the exposed portion.

40. The method of anchoring of claims 39, wherein (c) comprises using mating element pairs to attach the perimeter of the medical device component

41. The method of anchoring of claims 40, wherein each mating element pair comprises a first mating element attached to the medical device component and a second mating element and (c) comprises attaching the second mating element to the dura.

42. The method of anchoring of claims 41, wherein the mating element pairs enable precise special replacement of the medical device component.

43. The method of anchoring of claims 41, wherein the mating element pairs enable precise special reinsertion of the medical device component.

44. The method of anchoring of claims 41, wherein the mating element pairs serve a reference points for localization of epileptogenic tissue.

45. The method of anchoring of claims 41, wherein at least one mating element pair serves as at least one landmark for identifying cortical regions.

46. The method of anchoring of claims 41, wherein at least one mating element pair is of a radio-opaque material.

47. A tool for attaching a medical device component to a dura comprising:

(a) a distal end having a first prong adapted to secure a first mating element and a second prong adapted to hold a medical device component having an associated second mating element; and

(b) a proximal end adapted to be held by a user to control movement of the first and second prongs, wherein the proximal end may close the first and second prongs to mate together the first and second mating elements.

48. A tool for attaching a medical device component to a dura comprising:

(a) a distal end having a first prong and a second prong adapted to secure a female mating element; and

(b) a proximal end adapted to be held by a user to control movement of the first and second prongs, wherein the proximal end may close the first and second prongs to pry open the female mating element for attachment to a male mating element.

49. A tool for attaching a medical device component to a dura comprising:

(a) a distal end having a first prong and a second prong;

(b) a proximal end adapted to be held by a user to control movement of the first and second prongs; and

(c) means on the first and second prongs for piercing the dura to accept interconnection of a first and second mating element surrounding the dura.