Burr hole plugs with lead retention arrangements and methods of making and using

A burr hole plug, comprising:

• a plug base defining a burr hole aperture for insertion of a lead through the plug base;
• a solid filler filling a portion of the burr hole aperture, wherein the solid filler is configured for insertion of the lead through the solid filler using an insertion tool and configured to fill a gap formed by withdrawal of the insertion tool leaving the inserted through the plug base;
• and
• a cover configured to be disposed over, and coupled to, the plug base for lead retention.

A burr hole plug, comprising:

• a plug base defining a burr hole aperture for insertion of a lead through the plug base;
• a clip ring configured for insertion into the burr hole aperture, the clip ring comprising a ring portion and a clip portion extending radially inward from the ring portion, wherein the clip portion comprises opposing arms and, when a diameter of the ring portion is reduced by application of force, the clip portion is configured to increase a separation distance between at least some portions of the opposing arms to receive a portion of the lead between the opposing arms, wherein, when the force is removed, the ring portion is biased toward a larger diameter, complementary to a diameter of the burr hole aperture, and to engaging and compressing the portion of the lead received by the clip portion of the clip ring to retain the lead;
• and
• a cover configured to be disposed over, and coupled to, the plug base for lead retention.