# US 10,117,694 B2 · Bone screw, and bone fixation system and method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,117,694 B2 - Document ID: US10117694B2 - Status: Granted - Kind: B2 - Application number: 15/845,570 - Filed: 2017-12-18 - Published: 2018-05-10 - Granted: 2018-11-06 - Earliest claimed: 2011-06-28 - Assignees: Spinologics Inc. - Applicants: Spinologics Inc. - Inventors: Stefan Parent; Jean-Marc Mac-Thiong; Hubert Labelle; Mark Driscoll - Web page: https://patentgrep.com/patent/US10117694B2 ## CPC - A61B 17/8625: {Shanks, i.e. parts contacting bone tissue} - A61B 17/68: Internal fixation devices {, including fasteners and spinal fixators, even if a part thereof projects from the skin (bone staples A61B17/0642)} - A61B 17/7055: {connected to sacrum, pelvis or skull} - A61B 17/864: {hollow, e.g. with socket or cannulated} - A61B 17/8645: {Headless screws, e.g. ligament interference screws} - A61B 17/88: {Osteosynthesis instruments;} Methods or means for implanting or extracting internal {or external} fixation devices {(A61B17/7074 takes precedence)} - A61B 17/8872: {Instruments for putting said fixation devices against or away from the bone (A61B17/7074, A61B17/808 take precedence)} - A61B 2017/8655: {with special features for locking in the bone} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract A bone screw for pelvic bone fixation, the bone screw comprising an elongate body having a first end which is threaded for engaging at least one bone in the pelvic region, a second end comprising a screw head, and at least one opening across the length of the elongate body for adjustably receiving a fastening means to limit movement of the bone screw away from the engaged bone in use, wherein the at least one opening is shaped such that the position of the fastening means relative to the elongate body of the bone screw can be adjusted. A system for bone fixation in the pelvic region includes the bone screw and the fastening means. ## Claims ### Claim 1 A bone screw for pelvic bone fixation, the bone screw comprising an elongate body having: a first end which is threaded for engaging at least one bone in the pelvic region, a second end comprising a screw head, and at least one opening across the length of the elongate body for adjustably receiving a fastener to limit movement of the bone screw away from the engaged bone in use, wherein the at least one opening is shaped such that the position of the fastener relative to the elongate body of the bone screw can be adjusted, wherein the at least one opening provides a truncated geometry and wherein the truncated geometry is symmetrical from the center of the opening. ### Claim 2 (depends on 1) A bone screw according to claim 1, wherein the at least one opening is wider than a diameter of the fastener to allow adjustment of the relative angle of the fastener and the bone screw. ### Claim 3 (depends on 1) A bone screw according to claim 1, further comprising a securing mechanism for holding the fastener in a desired position in the at least one opening of the bone screw. ### Claim 4 (depends on 3) A bone screw according to claim 3, wherein the securing mechanism includes a bore extending from the screw head to the at least one opening, through which bore a clamping mechanism can be passed to abut the fastener to hold it in position. ### Claim 5 (depends on 4) A bone screw according to claim 4, wherein the bore is threaded and wherein the clamping mechanism is a set screw receivable in the threaded bore. ### Claim 6 (depends on 4) A bone screw according to claim 4, wherein the securing mechanism includes protrusions extending into the at least one opening for guiding the fastener into the at least one opening and holding the fastener in the desired position. ### Claim 7 (depends on 1) A bone screw according to claim 1, further including a lining material or packing material in at least a portion of the at least one opening. ### Claim 8 (depends on 7) A bone screw according to claim 7, wherein the packing material is at least one of a bone material packed into the at least one opening and a smart material which can change dimensions to hold the fastener in position when placed in contact with body temperature, body fluid moisture, body fluid ions or a force. ### Claim 9 (depends on 1) A bone screw according to claim 1, further including a connector which is attachable to the bone screw and to an implant, wherein the connector is attachable to the screw head and has a pair of upwardly extending flanges defining a slot for receiving an implant in use. ### Claim 10 (depends on 9) A bone screw according to claim 9, wherein the connector and the bone screw are one-piece. ### Claim 11 (depends on 1) A bone screw according to claim 1, wherein the elongate body is threaded at both the first and second ends. ### Claim 12 (depends on 1) A bone screw according to claim 1, further including a longitudinal opening extending the length of the elongate body for receiving a guide wire. ### Claim 13 (depends on 1) A bone screw according to claim 1, wherein at least a portion of the bone screw has a bioactive coating or is made of a bioactive material or is a smart material which can change dimensions when placed in contact with body temperature, body fluid moisture, body fluid ions or a force. ### Claim 14 (depends on 1) A bone screw according to claim 1, wherein the truncated geometry has an hour-glass geometry, a truncated wedge geometry or a truncated cone geometry. ### Claim 15 (depends on 1) A bone screw according to claim 1, wherein the at least one opening further comprises protrusions extending thereinto for guiding a fastener. ### Claim 16 (depends on 1) A bone screw according to claim 1, wherein a second opening of the two openings provides a second truncated geometry, symmetrical from the center of the second opening, the first truncated geometry and the second truncated geometry being different. ### Claim 17 A bone fixation method for the pelvic region, comprising providing a bone screw comprising an elongate body having a first end which is threaded for engaging at least one bone in the pelvic region, a second end comprising a screw head, and an opening across the length of the elongate body for adjustably receiving a fastener, wherein the opening provides a truncated geometry and wherein the truncated geometry is symmetrical from the center of the opening; attaching the bone screw to the at least one bone; passing the fastener through the opening of the bone screw and adjusting the position of the fastener relative to the bone screw; attaching the fastener to the same or different bone in the pelvic region, wherein the attaching can occur before or after passing the fastener through the opening of the bone screw. ### Claim 18 (depends on 17) A bone fixation method according to claim 17, wherein the fastener can be passed through the bone screw opening before or after attaching the bone screw to the bone. ### Claim 19 (depends on 17) A bone fixation method according to claim 17, further comprising securing the position of the fastener relative to the bone screw using a securing mechanism. ### Claim 20 (depends on 17) A bone fixation method according to claim 17, further comprising injecting a bioactive material into an opening at one of the ends of the fastener or the bone screw. ### Claim 21 A kit for pelvic bone fixation including: at least one bone screw each comprising: a first end which is threaded for engaging at least one bone in the pelvic region, a second end comprising a screw head, and at least one opening across the length of the elongate body for adjustably receiving a fastener to limit movement of the bone screw away from the engaged bone in use, wherein the at least one opening is shaped such that the position of the fastener relative to the elongate body of the bone screw can be adjusted, wherein the at least one opening provides a truncated geometry and wherein the truncated geometry is symmetrical from the center of the opening; and at least one of the fastener each comprising: an elongate body with one end adapted to engage at least one bone in the pelvic region, the elongate body being sized to be adjustably receivable in the at least one opening for interconnecting with the bone screw to limit movement of the bone screw away from the engaged bone in use, wherein the at least one bone screw and the at least one fastener have different diameters and lengths of different sizes. ### Claim 22 (depends on 21) A kit for pelvic bone fixation according to claim 21 further comprising at least one connector each being attachable to the bone screw and to an implant. ### Claim 23 (depends on 22) A kit for pelvic bone fixation according to claim 22, wherein the connector is attachable to the screw head and has a pair of upwardly extending flanges defining a slot for receiving an implant in use.