# US 10,117,658 B2 · Surgical jig > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,117,658 B2 - Document ID: US10117658B2 - Status: Granted - Kind: B2 - Application number: 15/021,482 - Filed: 2014-09-09 - Published: 2016-08-04 - Granted: 2018-11-06 - Earliest claimed: 2013-09-12 - Assignees: Trochlear Pty Ltd. - Applicants: Trochlear Pty Ltd - Inventors: Simon Talbot - Web page: https://patentgrep.com/patent/US10117658B2 ## CPC - A61B 17/1764: {for the knee} - A61B 17/155: {Cutting femur} - A61B 17/1717: {for applying intramedullary nails or pins} - A61B 2034/2068: {using pointers, e.g. pointers having reference marks for determining coordinates of body points} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract A method and a surgical alignment system for use in the positioning of a prosthetic component on or in a bone of a subject. The system includes an intramedullary member and a jig member which are connectable to each other to position the jig member relative to the intramedullary member in a sagittal orientation. The jig 5 member includes an elongate arm and the jig member is moveable in an axial plane and at least rotatable in a coronal plane relative to the intramedullary member to align the elongate arm with the bony landmark. ## Claims ### Claim 1 A surgical alignment system for use in positioning of a prosthetic component on or in a bone of a subject; said system including: an intramedullary member; and a jig member including a main body that has a transverse and a longitudinal axis and a transversely extending slot therein to receive a portion of the intramedullary member, the jig member further including an elongate arm which comprises a first end connected to the main body and wherein the elongate arm is configured to align with a bony landmark of said bone; wherein when the portion of the intramedullary member is received in the transversely extending slot of the jig member, the jig member is (i) moveable transversely relative to the intramedullary member and (ii) rotatable in a first plane, parallel to a coronal plane, relative to the intramedullary member to substantially align the elongate arm with the bony landmark; and wherein when the portion of the intramedullary member is received in the transversely extending slot of the jig member, the jig member is substantially fixed in a second plane, parallel to a sagittal plane, relative to the intramedullary member. ### Claim 2 (depends on 1) The surgical alignment system of claim 1, wherein the main body of the jig member has a bone facing surface and an opposite surface, the main body including at least two holes therein. ### Claim 3 (depends on 2) The surgical alignment system of claim 2, wherein the holes are configured to receive a pin or screw therein to mark holes in the bone of the subject. ### Claim 4 (depends on 1) The surgical alignment system of claim 1, wherein the bony landmark comprises the Sulcus line on a femur of a subject. ### Claim 5 (depends on 1) The surgical alignment system of claim 1, wherein, the elongate arm comprises an arcuate body which extends from the first end connected to the main body of the jig member to a distal end. ### Claim 6 (depends on 5) The surgical alignment system of claim 5 wherein the elongate arm tapers in width along its length from the first end to the distal end. ### Claim 7 (depends on 1) The surgical alignment system of claim 1, wherein the elongate arm is removably connected to the main body of the jig member. ### Claim 8 (depends on 1) The surgical alignment system of claim 1, wherein the main body of the jig member comprises a first elongate slot configured to receive a proximal portion of the elongate arm adjacent to the first end of the elongate arm. ### Claim 9 (depends on 8) The surgical alignment system of claim 8, wherein the first elongate slot extends parallel to the longitudinal axis of the main body. ### Claim 10 (depends on 1) The surgical alignment system of claim 1, wherein the intramedullary member comprises an elongate member which extends from a proximal end to a distal end and wherein said distal end is configured for introduction into a bone and said proximal end is configured to extend outwardly from said bone. ### Claim 11 (depends on 10) The surgical alignment system of claim 10, wherein the proximal end of the intramedullary member comprises a substantially flattened end. ### Claim 12 (depends on 1) The surgical alignment system of claim 1, wherein the intramedullary member is substantially rotatable in the first plane, parallel to a coronal plane, relative to a bone in which at least its distal end is inserted such that when the portion of the intramedullary member is received in the transversely extending slot of the jig member, rotatable movement of the intramedullary member causes the main body to also rotate in the first plane. ### Claim 13 A method for positioning a prosthetic component on or in a bone of a subject, said method including: inserting an intramedullary member into the bone; providing a jig member including a main body that has a transverse axis, a longitudinal axis, and a transversely extending slot therein, the jig member further including an elongate arm having a first end that is connected to the main body of the jig member; connecting the jig member to said intramedullary member such that a portion of the intramedullary member is received in the transversely extending slot of the main body of the jig member, the step of connecting the jig member to the intramedullary member substantially fixing the jig member relative to the intramedullary member in a first plane, parallel to a sagittal plane; and aligning the elongate arm with a bony landmark wherein the jig member is (i) moveable transversely relative to the intramedullary member and (ii) rotatable in a second plane, parallel to a coronal plane, relative to the intramedullary member to substantially align the elongate arm with the bony landmark as the elongate arm is aligned with the bony landmark. ### Claim 14 A surgical alignment system for use in positioning of a prosthetic component on or in a bone of a subject, said system for use with a computer assisted navigation alignment system and including: a bone marker member; and a jig member including a main body that has a transverse axis, a longitudinal axis, and a transversely extending slot therein to receive a portion of the bone marker, said jig member further including an elongate arm having a first end that is connected to the main body of the jig member, the elongate arm configured to align with a bony landmark of said bone; wherein when the portion of the bone marker is received in the transversely extending slot of the jig member, the jig member is moveable transversely relative to the bone marker and is further rotatable in a plane parallel to a coronal plane, relative to the bone marker member to substantially align the elongate arm with the bony landmark.