# US 8,771,319 B2 · Rod to rod cross connector > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,771,319 B2 - Document ID: US8771319B2 - Status: Granted - Kind: B2 - Application number: 13/447,608 - Filed: 2012-04-16 - Published: 2013-10-17 - Granted: 2014-07-08 - Earliest claimed: 2012-04-16 - Assignees: Aesculap Implant Systems, LLC - Applicants: Mohit Prajapati - Inventors: Mohit Prajapati - Web page: https://patentgrep.com/patent/US8771319B2 ## CPC - A61B 17/7052: {of variable angle or length} - A61B 17/7049: {Connectors, not bearing on the vertebrae, for linking longitudinal elements together (A61B17/7055, A61B17/7053, A61B17/7019 take precedence)} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract A rod to rod connector includes at least one clamping assembly for receiving a first spinal rod. The clamping assembly may include a polyaxial articulation element. The articulation element may include a hollow body forming an opening. The clamping body may further include a pivot element configured to clamp the first spinal rod between the pivot element and a channel wall in the clamping assembly. The rod to rod connector may also include a connector member for connecting the clamping assembly to a second spinal rod. The connector member may include a socket configured to receive the polyaxial articulation element of the clamping assembly, with the articulation element polyaxially rotatable relative to the axis of the socket. ## Claims ### Claim 1 A rod to rod connector comprising: a clamping assembly comprising: a clamping body having a channel defined by a channel wall for receiving a first spinal rod, and a bore extending through the clamping body; a polyaxial articulation element having a hollow body and an opening, the opening being adjacent to the bore extending through the clamping body; and a pivot element pivotally connected to the clamping body by a pin on which a first end of the pivot element is mounted, the pivot element configured to clamp a spinal rod between a second end of the pivot element and the channel wall in the clamping assembly, wherein the second end of the pivot element opposes the first end of the pivot element; and a connector member for connecting the clamping assembly to a second spinal rod, the connector member comprising a socket having an axis, the socket configured to receive the articulation element of the clamping assembly, with the articulation element polyaxially rotatable relative to the axis of the socket. ### Claim 2 (depends on 1) The rod to rod connector of claim 1, wherein the connector member comprises a first connector member section and a second connector member section configured to be pivotally coupled with the first connector member section. ### Claim 3 (depends on 2) The rod to rod connector of claim 2, wherein the first connector member section comprises a plate forming a first slot, and the second connector member section comprises a plate forming a second slot. ### Claim 4 (depends on 3) The rod to rod connector of claim 3, comprising a connector element extending through the first and second slots and pivotally connecting the first and second connector member sections. ### Claim 5 (depends on 1) The rod to rod connector of claim 1, comprising a fastener extending through the socket in the connector member, and through the opening and bore in the clamping assembly, the fastener interconnecting the connector member and clamping assembly. ### Claim 6 (depends on 5) The rod to rod connector of claim 5, wherein the articulation element of the clamping assembly comprises a plurality of wall sections separated from one another by slits, each wall section being displaceable between a first position, in which each wall section is in a relaxed state, and a second position, in which each wall section is displaced radially outwardly from the first position. ### Claim 7 (depends on 6) The rod to rod connector of claim 6, wherein the fastener is drivable into the opening of the clamping assembly to displace the wall sections of the articulation element from the first position to the second position. ### Claim 8 (depends on 7) The rod to rod connector of claim 7, wherein the first end of the pivot element of the clamping assembly and defines a pivot end and the second end of the pivot element defines a clamping end, the pivot end being aligned with the bore in the clamping assembly and positioned to be engaged by the fastener when the fastener is driven through the opening of the clamping assembly. ### Claim 9 (depends on 8) The rod to rod connector of claim 8, wherein the fastener is operable to lock the connector member relative to the articulation element and clamp a first spinal rod in the channel of the clamping assembly in a single rotation step. ### Claim 10 A rod to rod connector comprising: a first clamping assembly comprising: a clamping body having a channel defined by a channel wall for receiving a first spinal rod, and a bore extending through the clamping body; a polyaxial articulation element having a hollow body and an opening, the opening being adjacent to the bore extending through the clamping body; and a first pivot element pivotally connected to the clamping body by a first pin on which a first end of the first pivot element is mounted, the first pivot element configured to clamp a first spinal rod between a second end of the first pivot element and the channel wall in the first clamping assembly, wherein the second end of the first pivot element opposes the first end of the first pivot element; a second clamping assembly comprising: a clamping body having a channel defined by a channel wall for receiving a second spinal rod, and a bore extending through the clamping body; a polyaxial articulation element having a hollow body and an opening, the opening being adjacent to the bore extending through the clamping body; and a second pivot element pivotally connected to the clamping body, the second pivot element configured to clamp a second spinal rod between the second pivot element and the channel wall in the second clamping assembly; and a connector member for connecting the first clamping assembly with the second clamping assembly, the connector member comprising a first socket having a first axis, and a second socket having a second axis, the first socket configured to receive the articulation element of the first clamping assembly, and the second socket configured to receive the articulation element of the second clamping assembly, with the articulation element of the first clamping assembly polyaxially rotatable relative to the first axis and the articulation element of the second clamping assembly polyaxially rotatable relative to the second axis. ### Claim 11 (depends on 10) The rod to rod connector of claim 10, wherein the connector member comprises a first connector member section and a second connector member section configured to be pivotally coupled with the first connector member section. ### Claim 12 (depends on 11) The rod to rod connector of claim 11, wherein the first connector member section comprises a link portion forming a first slot, and the second connector member section comprises a link portion with a second slot. ### Claim 13 (depends on 12) The rod to rod connector of claim 12, comprising a connector element extending through the first and second slots and pivotally connecting the first and second connector member sections. ### Claim 14 (depends on 10) The rod to rod connector of claim 10, comprising a first fastener extending through the first socket in the connector member, and through the opening and bore in the first clamping assembly, the first fastener interconnecting the connector member and first clamping assembly. ### Claim 15 (depends on 14) The rod to rod connector of claim 14, wherein the articulation element of the first clamping assembly comprises a plurality of wall sections separated from one another by slits, each wall section being displaceable between a first position, in which each wall section is in a relaxed state, and a second position, in which each wall section is displaced radially outwardly from the first position. ### Claim 16 (depends on 15) The rod to rod connector of claim 15, wherein the first fastener is drivable into the opening of the first clamping assembly to displace the wall sections of the articulation element to the second position. ### Claim 17 (depends on 16) The rod to rod connector of claim 16, wherein the first end of the first pivot element of the first clamping assembly defines a pivot end and the second end of the first pivot element defines a clamping end, the pivot end being aligned with the bore in the first clamping assembly and positioned to be engaged by the first fastener when the first fastener is driven through the bore of the first clamping assembly. ### Claim 18 (depends on 17) The rod to rod connector of claim 17, wherein the first fastener is operable to lock the connector member relative to the articulation element and clamp a first spinal rod in the channel of the first clamping assembly in a single rotation step. ### Claim 19 A rod to rod connector comprising: a clamping assembly comprising: a clamping body having a channel defined by a channel wall for receiving a first spinal rod, and a bore extending through the clamping body; a polyaxial articulation element having a hollow body and an opening, the opening being adjacent to the bore extending through the clamping body; and a pivot element pivotally connected to the clamping body, the pivot element configured to clamp a spinal rod between the pivot element and the channel wall in the clamping assembly, wherein the pivot element comprises a clamping end and a pivot end, the pivot end aligned with the bore in the clamping assembly and positioned to be engaged by the fastener when the fastener is driven through the opening of the clamping assembly; and a connector member for connecting the clamping assembly to a second spinal rod, the connector member comprising a socket having an axis, the socket configured to receive the articulation element of the clamping assembly, with the articulation element polyaxially rotatable relative to the axis of the socket. ### Claim 20 (depends on 19) The rod to rod connector of claim 19, wherein the connector member comprises a first connector member section and a second connector member section configured to be pivotally coupled with the first connector member section. ### Claim 21 (depends on 20) The rod to rod connector of claim 20, wherein the first connector member section comprises a plate forming a first slot, and the second connector member section comprises a plate forming a second slot. ### Claim 22 (depends on 21) The rod to rod connector of claim 21, comprising a connector element extending through the first and second slots and pivotally connecting the first and second connector member sections. ### Claim 23 (depends on 19) The rod to rod connector of claim 19, comprising a fastener extending through the socket in the connector member, and through the opening and bore in the clamping assembly, the fastener interconnecting the connector member and clamping assembly. ### Claim 24 (depends on 23) The rod to rod connector of claim 23, wherein the articulation element of the clamping assembly comprises a plurality of wall sections separated from one another by slits, each wall section being displaceable between a first position, in which each wall section is in a relaxed state, and a second position, in which each wall section is displaced radially outwardly from the first position. ### Claim 25 (depends on 24) The rod to rod connector of claim 24, wherein the fastener is drivable into the opening of the clamping assembly to displace the wall sections of the articulation element from the first position to the second position. ### Claim 26 (depends on 23) The rod to rod connector of claim 23, wherein the fastener is operable to lock the connector member relative to the articulation element and clamp a first spinal rod in the channel of the clamping assembly in a single rotation step. ### Claim 27 A rod to rod connector comprising: a first clamping assembly comprising: a clamping body having a channel defined by a channel wall for receiving a first spinal rod, and a bore extending through the clamping body; a polyaxial articulation element having a hollow body and an opening, the opening being adjacent to the bore extending through the clamping body; and a pivot element pivotally connected to the clamping body, the pivot element configured to clamp a first spinal rod between the pivot element and the channel wall in the first clamping assembly, wherein the pivot element of the first clamping assembly comprises a clamping end and a pivot end, the pivot end aligned with the bore in the first clamping assembly and positioned to be engaged by the first fastener when the first fastener is driven through the bore of the first clamping assembly; a second clamping assembly comprising: a clamping body having a channel defined by a channel wall for receiving a second spinal rod, and a bore extending through the clamping body; a polyaxial articulation element having a hollow body and an opening, the opening being adjacent to the bore extending through the clamping body; and a pivot element pivotally connected to the clamping body, the pivot element configured to clamp a second spinal rod between the pivot element and the channel wall in the second clamping assembly; and a connector member for connecting the first clamping assembly with the second clamping assembly, the connector member comprising a first socket having a first axis, and a second socket having a second axis, the first socket configured to receive the articulation element of the first clamping assembly, and the second socket configured to receive the articulation element of the second clamping assembly, with the articulation element of the first clamping assembly polyaxially rotatable relative to the first axis and the articulation element of the second clamping assembly polyaxially rotatable relative to the second axis. ### Claim 28 (depends on 27) The rod to rod connector of claim 27, wherein the connector member comprises a first connector member section and a second connector member section configured to be pivotally coupled with the first connector member section. ### Claim 29 (depends on 28) The rod to rod connector of claim 28, wherein the first connector member section comprises a link portion forming a first slot, and the second connector member section comprises a link portion with a second slot. ### Claim 30 (depends on 29) The rod to rod connector of claim 29, comprising a connector element extending through the first and second slots and pivotally connecting the first and second connector member sections. ### Claim 31 (depends on 27) The rod to rod connector of claim 27, comprising a first fastener extending through the first socket in the connector member, and through the opening and bore in the first clamping assembly, the first fastener interconnecting the connector member and first clamping assembly. ### Claim 32 (depends on 31) The rod to rod connector of claim 31, wherein the articulation element of the first clamping assembly comprises a plurality of wall sections separated from one another by slits, each wall section being displaceable between a first position, in which each wall section is in a relaxed state, and a second position, in which each wall section is displaced radially outwardly from the first position. ### Claim 33 (depends on 32) The rod to rod connector of claim 32, wherein the first fastener is drivable into the opening of the first clamping assembly to displace the wall sections of the articulation element to the second position. ### Claim 34 (depends on 31) The rod to rod connector of claim 31, wherein the first fastener is operable to lock the connector member relative to the articulation element and clamp a first spinal rod in the channel of the first clamping assembly in a single rotation step. ### Claim 35 A rod to rod connector comprising: a clamping assembly comprising: a clamping body having a channel defined by a channel wall for receiving a first spinal rod, and a bore extending through the clamping body; a polyaxial articulation element having a hollow body and an opening, the opening being adjacent to the bore extending through the clamping body; and a pivot element pivotally connected to the clamping body, the pivot element configured to clamp a spinal rod between the pivot element and the channel wall in the clamping assembly; a connector member for connecting the clamping assembly to a second spinal rod, the connector member comprising a socket having an axis, the socket configured to receive the articulation element of the clamping assembly, with the articulation element polyaxially rotatable relative to the axis of the socket; and a fastener extending through the socket in the connector member, and through the opening and bore in the clamping assembly, the fastener interconnecting the connector member and clamping assembly, wherein the fastener is operable to lock the connector member relative to the articulation element and clamp a first spinal rod in the channel of the clamping assembly in a single rotation step. ### Claim 36 (depends on 35) The rod to rod connector of claim 35, wherein the connector member comprises a first connector member section and a second connector member section configured to be pivotally coupled with the first connector member section. ### Claim 37 (depends on 36) The rod to rod connector of claim 36, wherein the first connector member section comprises a plate forming a first slot, and the second connector member section comprises a plate forming a second slot. ### Claim 38 (depends on 35) The rod to rod connector of claim 35, comprising a connector element extending through the first and second slots and pivotally connecting the first and second connector member sections. ### Claim 39 (depends on 35) The rod to rod connector of claim 35, wherein the articulation element of the clamping assembly comprises a plurality of wall sections separated from one another by slits, each wall section being displaceable between a first position, in which each wall section is in a relaxed state, and a second position, in which each wall section is displaced radially outwardly from the first position. ### Claim 40 (depends on 35) The rod to rod connector of claim 35, wherein the fastener is drivable into the opening of the clamping assembly to displace the wall sections of the articulation element from the first position to the second position. ### Claim 41 A rod to rod connector comprising: a first clamping assembly comprising: a clamping body having a channel defined by a channel wall for receiving a first spinal rod, and a bore extending through the clamping body; a polyaxial articulation element having a hollow body and an opening, the opening being adjacent to the bore extending through the clamping body; a pivot element pivotally connected to the clamping body, the pivot element configured to clamp a first spinal rod between the pivot element and the channel wall in the first clamping assembly; and a first fastener extending through the first socket in the connector member, and through the opening and bore in the first clamping assembly, the first fastener interconnecting the connector member and first clamping assembly, wherein the first fastener is operable to lock the connector member relative to the articulation element and clamp a first spinal rod in the channel of the first clamping assembly in a single rotation step; a second clamping assembly comprising: a clamping body having a channel defined by a channel wall for receiving a second spinal rod, and a bore extending through the clamping body; a polyaxial articulation element having a hollow body and an opening, the opening being adjacent to the bore extending through the clamping body; and a pivot element pivotally connected to the clamping body, the pivot element configured to clamp a second spinal rod between the pivot element and the channel wall in the second clamping assembly; and a connector member for connecting the first clamping assembly with the second clamping assembly, the connector member comprising a first socket having a first axis, and a second socket having a second axis, the first socket configured to receive the articulation element of the first clamping assembly, and the second socket configured to receive the articulation element of the second clamping assembly, with the articulation element of the first clamping assembly polyaxially rotatable relative to the first axis and the articulation element of the second clamping assembly polyaxially rotatable relative to the second axis. ### Claim 42 (depends on 41) The rod to rod connector of claim 41, wherein the connector member comprises a first connector member section and a second connector member section configured to be pivotally coupled with the first connector member section. ### Claim 43 (depends on 42) The rod to rod connector of claim 42, wherein the first connector member section comprises a link portion forming a first slot, and the second connector member section comprises a link portion with a second slot. ### Claim 44 (depends on 43) The rod to rod connector of claim 43, comprising a connector element extending through the first and second slots and pivotally connecting the first and second connector member sections. ### Claim 45 (depends on 41) The rod to rod connector of claim 41, wherein the articulation element of the first clamping assembly comprises a plurality of wall sections separated from one another by slits, each wall section being displaceable between a first position, in which each wall section is in a relaxed state, and a second position, in which each wall section is displaced radially outwardly from the first position. ### Claim 46 (depends on 41) The rod to rod connector of claim 41, wherein the first fastener is drivable into the opening of the first clamping assembly to displace the wall sections of the articulation element to the second position.