Burr hole anchors, systems, and methods

• US 8,603,038 B2
• Filed: 01/21/2009
• Issued: 12/10/2013
• Est. Priority Date: 01/22/2008
• Status: Active Grant

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Nelson, Brian D.
• Primary Examiner(s): Sirmons, Kevin C
• Assistant Examiner(s): LEE, BRANDY SCOTT
• Application Number:
  US12/357,120
• Publication Number:
  US 20090187149A1
• Time in Patent Office: 1,784 Days
• Field of Search: 604/175, 604/288.01, 604/264
• US Class Current: 604/175
• CPC Class Codes: A61M 2005/1416 placed on the body of the patient
• CPC Class Codes: A61M 2039/025 through bones or teeth, e.g. through the skull
• 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 2039/0273 for introducing catheters into the body
• CPC Class Codes: A61M 2210/0687 Skull, cranium
• CPC Class Codes: A61M 2210/0693 Brain, cerebrum
• 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 5/14276 specially adapted for implantation
• CPC Class Codes: A61N 1/0539 Anchoring of brain electrode systems, e.g. within burr hole

Abstract

Anchors for securing a therapy delivery device such as a therapy catheter relative to a burr hole, and systems and methods for using the same. Anchors in accordance with embodiments of the present disclosure may include various apparatus for securing the therapy catheter relative to the burr hole. Exemplary anchors may include one or more of a connector for selectively connecting the therapy catheter to an external therapy source, and a shearing mechanism for shearing the therapy catheter to the desired length.

Claims

1. A burr hole anchor for anchoring a therapy delivery device, the anchor comprising:

a body including a base operable to secure to bone surrounding a burr hole, wherein the body comprises engagement surfaces configured to receive and immobilize a therapy catheter passing through the burr hole;

a connector operatively coupled to the base and movable relative thereto between at least;

a coupled position, wherein the connector is fluidly connected to the therapy catheter, and an uncoupled position, wherein the connector is disconnected from the therapy catheter; and

a catheter shearing mechanism attached to the body.

2. The anchor of claim 1, wherein the body further comprises a guide fixed relative to the base and proximate the engagement surfaces, wherein the guide comprises a trough configured to receive and support the connector for translation therein.

3. The anchor of claim 1, wherein the connector is movable in a radial direction relative to the base.

4. The anchor of claim 1, wherein the connector comprises:

a therapy catheter feed pin configured to engage the therapy catheter when the connector is in the coupled position;

a supply pin operatively coupled to an infusion pump, the supply pin in fluid communication with the therapy catheter feed pin; and

an actuator for moving the connector from the uncoupled position to the coupled position.

5. The anchor of claim 4, wherein the body further comprises:

a delivery catheter feed pin; and

a supply conduit fluidly connecting the delivery catheter feed pin with the supply pin.

6. The anchor of claim 5, wherein the delivery catheter feed pin is fixed to the base.

7. The anchor of claim 1, wherein the base comprises a frame defining one or more bays, each bay configured to receive an anchor module.

8. The anchor of claim 7, wherein the anchor module comprises a module selected from the group consisting of a blanking module, a catheter connection module, and a pressure measurement module.

9. The anchor of claim 7, wherein the connector is attached directly to the anchor module.

10. The anchor of claim 1, wherein the connector is attached directly to the base.

11. The anchor of claim 1, wherein the body defines an opening through which the therapy catheter may pass.

12. The anchor of claim 11, wherein the engagement surfaces are defined by a slot formed through a wall of the opening.

13. The anchor of claim 1 , wherein the catheter shearing mechanism comprises a door operatively attached to the body and pivotable between an open position and a closed position, the door comprising a shearing edge.

14. A burr hole anchor for anchoring a therapy delivery device, the anchor comprising:

a body including a base operable to secure to bone surrounding a burr hole, wherein the body comprises engagement surfaces configured to receive and immobilize a therapy catheter passing through the burr hole; and

a shearing mechanism comprising a door operatively attached to the body, the door pivotable between an open position and a closed position, the shearing mechanism operable to selectively shear the therapy catheter when placed between a first shearing edge formed by the door and a second shearing edge formed by the body.

15. The anchor of claim 14, further comprising a clip removably secured to the body and operable to hold an excess portion of the therapy catheter.

16. The anchor of claim 14, wherein the base comprises a frame defining one or more bays, each bay configured to receive an anchor module.

17. The anchor of claim 14, wherein the anchor module comprises a module selected from the group consisting of a blanking module, a catheter connection module, and a pressure measurement module.

18. The anchor of claim 14, wherein the second shearing edge of the shearing mechanism is defined by an edge of a slot formed in the body for receiving the door.

19. The anchor of claim 18, wherein the body defines a depression adjacent the second shearing edge, the depression configured to receive the therapy catheter therein.

20. A burr hole anchor system comprising:

a therapy catheter for placement through a burr hole; and

a burr hole anchor comprising;

a body including a base operable to secure to bone surrounding the burr hole, wherein the body comprises engagement surfaces configured to receive and immobilize the therapy catheter passing through the burr hole; and

a catheter shearing mechanism attached to the body, wherein the catheter shearing mechanism comprising a door pivotally attached to the body and moveable between an open position and a closed position, the door comprising a first shearing edge and the body defining a second shearing edge.

21. The system of claim 20, further comprising a connector operatively coupled to the base and movable relative thereto between at least:

a coupled position, wherein the connector is fluidly connected to the therapy catheter; and

an uncoupled position, wherein the connector is disconnected from the therapy catheter.

22. The system of claim 21, further comprising an infusion pump and a delivery catheter, the delivery catheter comprising a first end fluidly coupled to the connector, and a second end fluidly coupled to the infusion pump.

23. A method for trimming a therapy catheter and for securing the therapy catheter relative to a burr hole, the method comprising:

placing the therapy catheter through the burr hole;

securing the therapy catheter relative to bone surrounding the burr hole using a burr hole anchor, the anchor comprising;

a body including a base that is securable to the bone surrounding the burr hole, wherein the body comprises engagement surfaces configured to receive and immobilize the therapy catheter passing through the burr hole; and

a shearing mechanism comprising a door pivotally attached to the body and pivotable between an open position and a closed position, the shearing mechanism comprising a first shearing edge and a second shearing edge;

placing the therapy catheter between the first and second shearing edges; and

moving the door from the open position to the closed position, thereby shearing an excess portion of the therapy catheter.

24. The method of claim 23, further comprising securing the excess portion of the therapy catheter within a clip removably attached to the body of the anchor before shearing the excess portion.

25. The method of claim 23, further comprising moving a connector operatively coupled to the base from an uncoupled position, wherein the connector is disconnected from the therapy catheter, to a coupled position, wherein the connector is fluidly connected to the therapy catheter.

26. The method of claim 25, further comprising coupling a first end of a delivery catheter to the connector and a second end to an infusion pump.

27. The method of claim 23, wherein securing the therapy catheter comprises securing at least two therapy catheters passing through the burr hole.