Patent ID: 7454251
Filing Date: 2008-11-18
Classification: A61B,A61N

Abstract:
1. A device for retaining an excess portion of a lead that is implanted within or on a surface of a brain of a patient wherein access to the brain is provided through a burr hole in a skull of a patient, the device comprising: a burr hole ring having an aperture configured to receive the lead therethrough and an outside surface, the burr hole ring being configured to be secured to the skull wherein the aperture in the burr hole ring is in general alignment with the burr hole, the outside surface of the burr hole ring including a spiral groove that extends from the aperture to at least one outlet periphery of the outside surface of the burr ring, the spiral groove dimensioned such that the excess portion of the lead can be stored in at least one loop in the spiral groove; wherein the groove includes a plurality of concentric grooves extending circumferentially around the outside surface of the burr hole ring, and at least one generally radial groove in the outside surface communicating with the plurality of concentric grooves, the radial groove extending to an outlet at a periphery of the outside surface of the burr hole ring.