# US 12,109,058 B2 · Independently rotatable detector plate for medical imaging device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,109,058 B2 - Document ID: US12109058B2 - Status: Granted - Kind: B2 - Application number: 18/446,641 - Filed: 2023-08-09 - Published: 2024-02-22 - Granted: 2024-10-08 - Earliest claimed: 2011-09-01 - Assignees: Hologic, Inc. - Applicants: Hologic, Inc. - Inventors: John Jenkins; Mark Guetersloh; Aleksey Danilkin; Tri Pham - Web page: https://patentgrep.com/patent/US12109058B2 ## CPC - A61B 6/4441: {the rigid structure being a C-arm or U-arm} - A61B 6/06: Diaphragms - A61B 6/4452: {the source unit and the detector unit being able to move relative to each other} - A61B 6/461: {Displaying means of special interest} - A61B 6/487: {involving fluoroscopy} - G21K 1/04: using variable diaphragms, shutters, choppers - A61B 6/4233: {using matrix detectors} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - G21K: HANDLING OF PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES ## Abstract A real-time fluoroscopic imaging system includes a collimator and a detector which are rotationally movable independent of the support assembly, e.g., c-arm, to which they are mounted. Rotational movement of the collimator and the detector are coordinated such that the orientation of the detector with respect to the collimator does not change. The collimator may include a geared flange member to facilitate rotation, and may be a single molded piece formed of a plastic such as tungsten polymer material. The system may also include a plurality of interchangeable collimators characterized by different shapes. A display is provided to present an image to an operator, and image orientation logic displays a target anatomy in a selected orientation regardless of orientation of the target anatomy relative to the detector, and regardless of rotation of the detector. ## Claims ### Claim 1 A fluoroscopic imaging device, comprising: an x-ray source assembly comprising a rotatable collimator; and a rotatable flat detector assembly separated by a gap from the x-ray source assembly, and wherein an axis of rotation of the detector assembly is aligned with an axis of rotation of the collimator, and the collimator is configured to automatically match a manual rotation of the detector assembly to maintain an orientation of the detector assembly with the x-ray source assembly. ### Claim 2 (depends on 1) The fluoroscopic imaging device of claim 1, wherein the x-ray source assembly and the detector assembly are respectively mounted in facing relation such that an x-ray beam from the x-ray source assembly impinges on an input end of the detector assembly. ### Claim 3 (depends on 2) The fluoroscopic imaging device of claim 2, wherein an axis of rotation of the detector assembly matches an axis of rotation of the collimator. ### Claim 4 (depends on 1) The fluoroscopic imaging device of claim 1, wherein the collimator is mounted inside the x-ray source assembly. ### Claim 5 (depends on 1) The fluoroscopic imaging device of claim 1, wherein the collimator is manually rotatable. ### Claim 6 (depends on 1) The fluoroscopic imaging device of claim 1, further comprising a display configured to present at least a substantially real-time image of a target anatomy placed between the x-ray source assembly and the detector assembly. ### Claim 7 (depends on 1) The fluoroscopic imaging device of claim 1, further comprising a computer configured to process a plurality of data generated by the detector assembly. ### Claim 8 (depends on 7) The fluoroscopic imaging device of claim 7, wherein the plurality of data is displayed on a display for presenting an image to an operator. ### Claim 9 (depends on 1) The fluoroscopic imaging device of claim 1, further including a rotation mechanism coupled to the detector assembly, wherein the rotation mechanism controls rotation of the detector assembly. ### Claim 10 A fluoroscopic imaging device comprising: a c-arm support assembly; an x-ray source assembly mounted at a first distal end of the c-arm support assembly; a detector assembly rotatably mounted to a second distal end of the c-arm support assembly, wherein the detector assembly is configured to rotate independently of the c-arm support assembly; and a collimator assembly rotatably mounted adjacent the x-ray source assembly, wherein an axis of rotation of the collimator assembly matches an axis of rotation of the detector assembly, and the collimator assembly is configured to automatically match a manual rotation of the detector assembly to maintain an orientation of the collimator assembly with the detector assembly. ### Claim 11 (depends on 10) The fluoroscopic imaging device of claim 10, wherein the x-ray source assembly and the detector assembly are respectively mounted in facing relation such that an x-ray beam from the x-ray source assembly impinges on an input end of the detector assembly. ### Claim 12 (depends on 11) The fluoroscopic imaging device of claim 11, wherein an axis of rotation of the collimator assembly matches an axis of rotation of the detector assembly. ### Claim 13 (depends on 10) The fluoroscopic imaging device of claim 10, wherein the collimator assembly is rotatably mounted inside the x-ray source assembly. ### Claim 14 (depends on 10) The fluoroscopic imaging device of claim 10, wherein the collimator assembly is manually rotatable. ### Claim 15 (depends on 10) The fluoroscopic imaging device of claim 10, further comprising a display configured to display a substantially real time x-ray image. ### Claim 16 A fluoroscopic imaging device comprising: a c-arm support assembly; an x-ray source assembly mounted at a first distal end of the c-arm support assembly; a detector assembly rotatably mounted to a second distal end of the c-arm support assembly, wherein the detector assembly is configured to rotate independently of the c-arm support assembly; and a collimator assembly disposed adjacent the x-ray source assembly, wherein the collimator assembly comprises a base member disposed between the detector assembly and the x-ray source assembly, wherein the collimator assembly comprises at least two collimators, each rotatably mounted relative to the base member around an axis of rotation and selectably positionable relative to the detector assembly, wherein the at least two collimators are linearly movable in two directions relative to the base member such that the axis of rotation of each linearly translate therewith, and wherein the at least two collimators each comprise differently-shaped openings. ### Claim 17 (depends on 16) The fluoroscopic imaging device of claim 16, wherein the axis of rotation of each of the at least two collimators matches an axis of rotation of the detector assembly. ### Claim 18 (depends on 16) The fluoroscopic imaging device of claim 16, wherein each of the at least two collimators are configured to automatically match a rotation of the detector assembly to maintain an orientation of each of the at least two collimators with the detector assembly. ### Claim 19 (depends on 16) The fluoroscopic imaging device of claim 16, wherein the at least two collimators are slidably mounted in a channel of the base member.