Burr hole covers and methods for using same

Patent metadata

Field	Value
Publication number	US-9788952-B2
Application number	US-201313792119-A
Country	US
Kind code	B2
Filing date	Mar 10, 2013
Priority date	May 10, 2012
Publication date	Oct 17, 2017
Grant date	Oct 17, 2017

Abstract

A burr hole cover includes a cap or cap assembly and a retainer and is configured to be partially positioned within a burr hole formed in a patient. The retainer has a cap-receiving aperture; a plurality of grooves provided in the retainer and a plurality of cut-outs wherein each cut-out is provided at an end of each groove towards the outer perimeter of the retainer. A channel may be provided at an opposite end of each groove vertically-extending from the top to the bottom of the retainer to encourage a medical device segment to remain in a groove during installation of the burr hole cover. The burr hole cover may be used to secure segments of medical devices relative to a burr hole and to allow a range of lateral motion for the portion(s) of the medical device(s) extending proximally out of the corresponding groove.

First claim

The invention claimed is:

1. A burr hole cover for securing a medical device, said burr hole cover comprising
a gasket having an outer diameter;
a cap configured to receive the gasket;
a retainer configured to receive the gasket and the cap and further configured to be partially positioned within a burr hole formed in a patient, the retainer comprising:
a top defining an outer perimeter of the retainer and comprising an undersurface;
a lower ring extending vertically downward from the undersurface and terminating at a predetermined depth, the lower ring comprising a bottom at the predetermined depth, wherein the bottom defines an inner perimeter of the retainer;
a plurality of grooves provided in the top surface of the retainer, each of the plurality of grooves extending continuously from the inner perimeter, along the predetermined depth of the lower ring, and outward toward the outer perimeter of the top, and characterized by a groove depth, a groove width, and a groove length, and configured to receive a first segment of a medical device; and
a plurality of cut-outs wherein each cut-out is provided at an end of a respective one of the plurality of grooves towards the outer perimeter and wherein each cut-out is configured to provide a range of at least lateral motion for a second segment of the medical device extending proximally out of the respective one of the plurality of grooves,

wherein the outer diameter of the gasket is configured to retain the first segment of a medical device in a portion of one of the plurality of grooves, the portion being located at the inner perimeter of the retainer.

2. The burr hole cover of claim 1 wherein at least the groove depth corresponds to a diameter of the first segment of the medical device.

3. The burr hole cover of claim 1 wherein each of the plurality of grooves traverses a distance measured from a first end of the groove near the outer perimeter to the bottom of the lower ring.

4. The burr hole cover of claim 1 wherein the retainer further comprises a lower inner recessed area near the bottom of the lower ring and is configured to seat within a burr hole.

5. The burr hole cover of claim 1 wherein the retainer is provided with an upper inner recessed area for receiving at least one portion of the cap.

6. The burr hole cover of claim 1 wherein the retainer is provided with a varying height from the outer perimeter to the inner perimeter.

7. The burr hole cover of claim 1 wherein the gasket is formed from a first material and the retainer is formed from a second material and the first material is more resilient than the second material.

8. The burr hole cover of claim 1 wherein the gasket is formed from a first material and the cap is formed from a second material and the first material is more resilient than the second material.

9. The burr hole cover of claim 1 , wherein the retainer is formed of a material having a durometer, the retainer comprising an undersurface and a material associated with the undersurface, the material associated with the undersurface having a durometer less than the durometer of the retainer.

10. The burr hole cover of claim 1 , wherein the retainer is formed of a material having a durometer, the retainer comprising at least one insert associated with one of the plurality of grooves, the insert formed of a material having a durometer less than the durometer of the retainer.

11. The burr hole cover of claim 1 , wherein at least one of the gasket and cap are formed of one of a clear material or an opaque material.

12. The burr hole cover of claim 1 , wherein the cap comprises a top surface, and at least one of an aperture or recession formed in the top surface.

Assignees

• Neuropace Inc

Inventors

• Paspa Paul
• Sandoval Greg
• Chavez Alfonso
• Potts Dennis
• Pearson John Dunagan

Classifications

• A61F2/2875 Primary

  Skull or cranium (A61F2/2803 takes precedence; joints for temporo-mandibular [TM] joints [TMJ] A61F2/3099) · CPC title

• A61N1/0539 Primary

  Anchoring of brain electrode systems, e.g. within burr hole · CPC title