# US 10,765,461 B2 · Variable angle bone fixation device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,765,461 B2 - Document ID: US10765461B2 - Status: Granted - Kind: B2 - Application number: 15/995,924 - Filed: 2018-06-01 - Published: 2019-12-05 - Granted: 2020-09-08 - Earliest claimed: 2018-06-01 - Assignees: DePuy Synthes Products, Inc. - Applicants: Depuy Synthes Products, Inc. - Inventors: Binh Bao Vu; George Mikhail - Web page: https://patentgrep.com/patent/US10765461B2 ## CPC - A61B 17/8047: {wherein the additional element surrounds the screw head in the plate hole (A61B17/8052 takes precedence)} - A61B 17/8057: {the interlocking form comprising a thread} - A61B 17/8605: {Heads, i.e. proximal ends projecting from bone} - A61B 17/8685: {comprising multiple separate parts} - A61B 17/8883: {the driver bit acting on the periphery of the screw head} - A61B 17/8004: {with means for distracting or compressing the bone or bones} - A61B 17/8042: {the additional component being a cover over the screw head} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract A bone fixation system including a bone fixation element including a head portion having a bore passing therethrough from a first side surface to a second side surface, wherein the bore is perpendicular to a longitudinal axis of the bone fixation element, a securing element positioned within the bore, and a bone plate extending along a plate axis and having a threaded plate hole extending therethrough from a first surface to a second surface configured to contact a bone in an operative configuration. ## Claims ### Claim 1 A bone fixation element comprising: a shaft extending along a longitudinal axis of the bone fixation element from a proximal portion to a distal portion; and a head portion comprising a first side surface and a second side surface opposite the first side surface, wherein the first side surface and the second side surface are shaped to allow for variable angle rotation of the bone fixation element; and a bore passing through from the first side surface to the second side surface, wherein the bore is perpendicular to the longitudinal axis of the bone fixation element; and a securing element positioned within the bore, wherein the securing element is configured to meet an interior surface of a bone plate hole without penetrating the interior surface of the bone plate hole. ### Claim 2 (depends on 1) The bone fixation element of claim 1, wherein the bore comprises at least one angled side. ### Claim 3 (depends on 2) The bone fixation element of claim 2, wherein the bore comprises two angled sides. ### Claim 4 (depends on 2) The bone fixation element of claim 2, wherein the bore comprises one angled side and one flat side. ### Claim 5 (depends on 1) The bone fixation element of claim 1, wherein the first side surface and the second side surface have a rounded shape. ### Claim 6 A bone fixation system comprising: a bone fixation element comprising: a shaft extending along a longitudinal axis of the bone fixation element from a proximal end to a distal end; and a head portion comprising: a first side surface and a second side surface opposite the first side surface, wherein the first side surface and the second side surface are shaped to allow for variable angle rotation of the bone fixation element; and a bore passing through from the first side surface to the second side surface, wherein the bore is perpendicular to a longitudinal axis of the bone fixation element; a securing element positioned within the bore; and a hollow cylindrical nut configured to fix the bone fixation element to a bone fixation device: wherein the bore and securing element are configured to allow for joint-like rotation of the bone fixation element. ### Claim 7 (depends on 6) The bone fixation system of claim 6, wherein the bore comprises at least one angled side. ### Claim 8 (depends on 7) The bone fixation system of claim 7, wherein the bore comprises two angled sides. ### Claim 9 (depends on 7) The bone fixation system of claim 7, wherein the bore comprises one angled side and one flat side. ### Claim 10 (depends on 6) The bone fixation system of claim 6, wherein the first side surface and the second side surface of the head portion have a rounded shape, and the head portion is configured to be exposed through the hollow cylindrical nut. ### Claim 11 (depends on 6) The bone fixation system of claim 6, wherein the securing element is a pin. ### Claim 12 (depends on 11) The bone fixation system of claim 11, wherein the pin has a cylindrical shape. ### Claim 13 (depends on 6) The bone fixation system of claim 6, further comprising the bone fixation device. ### Claim 14 (depends on 13) The bone fixation system of claim 13, wherein the bone fixation device is a bone plate. ### Claim 15 (depends on 13) The bone fixation system of claim 13, wherein the bore and securing element are configured to allow for variable angle insertion of the bone fixation element into the bone, with respect to the bone fixation device. ### Claim 16 A bone fixation system comprising: a bone fixation element comprising: a shaft extending along a longitudinal axis of the bone fixation element from a proximal end to a distal end; and a head portion comprising: a first side surface and a second side surface opposite the first side surface, wherein the first side surface and the second side surface are shaped to allow for variable angle rotation of the bone fixation element; and a bore passing through from the first side surface to the second side surface, wherein the bore is perpendicular to a longitudinal axis of the bone fixation element; and a securing element positioned within the bore; and a bone plate extending along a plate axis and having a threaded plate hole extending therethrough from a top surface to a bottom surface configured to contact a bone in an operative configuration; wherein the bore and securing element are configured to allow for insertion of the bone fixation element at a plurality of angles relative to the bone plate, wherein the securing element is configured to meet an interior surface of the threaded plate hole without penetrating the interior surface of the threaded plate hole. ### Claim 17 (depends on 16) The bone fixation system of claim 16, wherein the threaded plate hole comprises dulled edges. ### Claim 18 (depends on 16) The bone fixation system of claim 16, wherein the bore includes at least one angled side. ### Claim 19 (depends on 18) The bone fixation system of claim 18, wherein the bore includes two angled sides. ### Claim 20 (depends on 18) The bone fixation system of claim 18, wherein the bore includes one angled side and one flat side. ### Claim 21 (depends on 16) The bone fixation system of claim 16, wherein the first side surface and the second side surface have a rounded shape. ### Claim 22 (depends on 16) The bone fixation system of claim 16, wherein the securing element is a pin. ### Claim 23 (depends on 22) The bone fixation system of claim 22, wherein the pin has a cylindrical shape. ### Claim 24 (depends on 16) The bone fixation system of claim 16, wherein the plurality of angles comprises an angle within a range of 15 degrees relative to an axis normal to the bottom surface of the bone plate. ### Claim 25 A bone fixation system comprising: a bone fixation element comprising: a shaft extending along a longitudinal axis of the bone fixation element from a proximal end to a distal end; and a head portion comprising: a first side surface and a second side surface opposite the first side surface, wherein the first side surface and the second side surface are shaped to allow for variable angle rotation of the bone fixation element; and a bore passing through from the first side surface to the second side surface, wherein the bore is perpendicular to a longitudinal axis of the bone fixation element; and a securing element positioned within the bore; and a bone plate extending along a plate axis and having a threaded plate hole extending therethrough from a top surface to a bottom surface configured to contact a bone in an operative configuration; wherein the bore and securing element are configured to allow for insertion of the bone fixation element at a plurality of angles relative to the bone plate; and a hollow cylindrical nut configured to fix the bone fixation element to the bone plate. ### Claim 26 (depends on 25) The bone fixation system of claim 25, wherein the hollow cylindrical nut comprises a threaded exterior surface configured to interface with the threaded plate hole. ### Claim 27 (depends on 25) The bone fixation system of claim 25, wherein the head portion of the bone fixation element sits within the hollow cylindrical nut. ### Claim 28 (depends on 25) The bone fixation system of claim 25, wherein the hollow cylindrical nut further comprises a first bore that extends from an exterior surface to an interior surface of the nut and an opposing second bore that extends from an exterior surface to an interior surface of the hollow cylindrical nut opposite the first bore, wherein the first bore and second bore are configured to accommodate the securing element.