Recessed burr hole covers and methods for using the same

摘要

A burr hole cover is configured to be recessed in a burr hole formed in a patient and includes a base and a cap provided with complementary features to allow a portion of a medical device, such as a brain lead, to be situated in the burr hole cover and then secured by rotation of the cap relative to the base. The features include channels on the base and matching cut-outs on the cap, and slots and locking pockets on the base that are configured to be aligned with locking tabs and locking protrusions on the cap. Because the burr hole cover is recessed in the burr hole, the medical device can extend proximally of the burr hole at the level of the cranium. A bottom surface of the cap may be provided with guides for the lead extending distally in towards the brain.

主权项

1. A burr hole cover for securing a portion of a medical device within a burr hole formed in a patient's cranium, the burr hole cover comprising:
a generally circular base provided with:
a top surface, a bottom surface, and a thickness;extending through the base thickness from the top surface to the bottom surface: (a) a cap-receiving aperture; (b) a plurality of channels, each channel configured to receive a portion of a medical device extending through a burr hole formed in a patient's cranium, and (c) at least one slot configured with a locking pocket provided in the slot near the bottom surface of the base; and a cap provided with:
a top surface, a bottom surface, and a thickness;extending through the cap thickness from the top surface to the bottom surface, a corresponding cut-out for each channel of the plurality of channels provided in the base, each cut-out characterized by a radius;at least one tab provided near the cap top surface; anda locking protrusion provided near the cap bottom surface, wherein the locking protrusion is vertically aligned with the at least one tab, and the vertically-aligned tab and locking protrusion are dimensioned to fit within the at least one slot of the base, wherein the cap is configured to be placed in the base and to transition, through rotational movement of the cap relative to the base, between 1) an unlocked position during which the at least one vertically-aligned tab and locking protrusion are vertically aligned with an axis of the at least one slot and the locking protrusion is disengaged from the locking pocket of the at least one slot of the base, and 2) a locked position during which the at least one vertically-aligned tab and locking protrusion are offset from the axis of the at least one slot and the locking protrusion is engaged with the locking pocket of the at least one slot of the base.