# US 2025/0144409 A1 · Burr hole plugs with lead retention arrangements and methods of making and using > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2025/0144409 A1 - Document ID: US20250144409A1 - Status: Published application - Kind: A1 - Application number: 18/935,291 - Filed: 2024-11-01 - Published: 2025-05-08 - Earliest claimed: 2023-11-08 - Assignees: Boston Scientific Neuromodulation Corporation - Applicants: Boston Scientific Neuromodulation Corporation - Inventors: Zdzislaw Bernard Malinowski - Web page: https://patentgrep.com/patent/US20250144409A1 ## CPC - A61N 1/0539: {Anchoring of brain electrode systems, e.g. within burr hole} - A61N 1/0534: {Electrodes for deep brain stimulation} - A61N: ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY (measurement of bioelectric currents A61B; surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body A61B18/00; anaesthetic apparatus in general A61M; incandescent lamps H01K; infrared radiators for heating H05B) ## Abstract A burr hole plug includes a plug base defining a plurality of grooves and a burr hole aperture for insertion of at least one lead (or multiple leads) through the plug base, wherein each of the grooves is configured for receiving a portion of a lead, wherein each of the grooves is defined by at least one groove wall, wherein, for each of the grooves, the plug base further includes at least one grip extending into the groove from the at least one groove wall to engage, and facilitate retention of, the portion of any lead received within the groove; and a cover configured to be disposed over, and removably coupled to, the plug base for lead retention. Alternatively or additionally, a burr hole plug can include one or more of a solid filler disposed in the burr hole aperture or a clip ring for lead retention. ## Claims ### Claim 1 A burr hole plug, comprising: a plug base defining a plurality of grooves and a burr hole aperture for insertion of at least one lead through the plug base, wherein each of the grooves is configured for receiving a portion of a one of the at least one lead, wherein each of the grooves is defined by at least one groove wall, wherein, for each of the grooves, the plug base further comprises at least one grip extending into the groove from the at least one groove wall to engage, and facilitate retention of, the portion of any of the at least one lead received within the groove; and a cover configured to be disposed over, and removably coupled to, the plug base for lead retention. ### Claim 2 (depends on 1) The burr hole plug of claim 1, wherein, for at least one of the grooves, the at least one grip comprises two opposing grips extending from the at least one groove wall. ### Claim 3 (depends on 1) The burr hole plug of claim 1, wherein the grips comprise polyether ether ketone or polycarbonate. ### Claim 4 (depends on 1) The burr hole plug of claim 1, wherein the cover comprises a cover base and a plurality of prongs extending from the cover base, wherein the prongs are configured to removably engage the grooves to facilitate retention of the cover on the plug base. ### Claim 5 (depends on 4) The burr hole plug of claim 4, wherein at least a portion of each of the prongs has a shape complementary to a shape of a portion of at least one of the grooves. ### Claim 6 (depends on 1) A kit, comprising: the burr hole plug of claim 1; and a lead implantable within the patient through the burr hole plug, wherein the burr hole plug is configured to receive a portion of the lead within a one of the grooves. ### Claim 7 (depends on 6) The kit of claim 6, wherein the grips of the plug base are configured to compress the portion of the lead when the portion of the lead is received within the groove. ### Claim 8 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. ### Claim 9 (depends on 8) The burr hole plug of claim 8, wherein the solid filler comprises silicone. ### Claim 10 (depends on 8) The burr hole plug of claim 8, wherein the solid filler fills a portion of the burr hole aperture that is configured to reside below an outer surface of a skull of a patient when the burr hole plug is implanted into the skull. ### Claim 11 (depends on 8) The burr hole plug of claim 8, wherein, after the lead is inserted through the filler and the insertion tool is withdrawn, the solid filler is configured to resist at least one of lateral movement, longitudinal movement, or angular movement of a portion of the lead residing within the solid filler. ### Claim 12 (depends on 8) The burr hole plug of claim 8, wherein the plug base defines a plurality of grooves, wherein each of the grooves is configured for receiving a portion of the lead, wherein each of the grooves is defined by at least one groove wall, wherein, for each of the grooves, the plug base further comprises at least one grip extending into the groove from the at least one groove wall to engage, and facilitate retention of, the portion of the lead received within the groove. ### Claim 13 (depends on 8) A kit, comprising: the burr hole plug of claim 8; and the lead implantable within the patient through the solid filler of the burr hole plug. ### Claim 14 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. ### Claim 15 (depends on 14) The burr hole plug of claim 14, wherein the opposing arms comprise ridges disposed thereon and configured to engage the portion of the lead. ### Claim 16 (depends on 14) The burr hole plug of claim 14, wherein the ring portion comprises two opposing, separated, circumferential portions extending from the clip portion. ### Claim 17 (depends on 14) The burr hole plug of claim 14, wherein the plug base comprises a plurality of ridges arranged around at least a portion of the burr hole aperture to hinder rotation of the clip ring within the burr hole aperture. ### Claim 18 (depends on 14) The burr hole plug of claim 14, wherein the burr hole plug comprises a plurality of the clip rings, wherein each of the clip rings is configured for receiving a portion of a different lead. ### Claim 19 (depends on 14) The burr hole plug of claim 14, wherein the plug base defines a plurality of grooves, wherein each of the grooves is configured for receiving a portion of the lead, wherein each of the grooves is defined by at least one groove wall, wherein, for each of the grooves, the plug base further comprises at least one grip extending into the groove from the at least one groove wall to engage, and facilitate retention of, the portion of the lead received within the groove. ### Claim 20 (depends on 14) A kit, comprising: the burr hole plug of claim 14; and the lead implantable within the patient through the burr hole plug.