# US 10,245,119 B2 · Signal tag detection components, devices, and systems > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,245,119 B2 - Document ID: US10245119B2 - Status: Granted - Kind: B2 - Application number: 15/971,404 - Filed: 2018-05-04 - Published: 2018-12-13 - Granted: 2019-04-02 - Earliest claimed: 2015-10-02 - Assignees: Elucent Medical, Inc. - Applicants: Elucent Medical, Inc. - Inventors: Daniel W. van der Weide; Noah van der Weide; Eric N. Rudie; David Miel - Web page: https://patentgrep.com/patent/US10245119B2 ## CPC - A61B 90/39: {Markers, e.g. radio-opaque or breast lesions markers} - A61B 18/1402: {Probes for open surgery} - A61B 34/20: Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis - A61B 90/98: using electromagnetic means, e.g. transponders - G06K 7/10: by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation - G06K 7/10336: {the antenna being of the near field type, inductive coil} - G06K 7/10386: {the interrogation device being of the portable or hand-handheld type, e.g. incorporated in ubiquitous hand-held devices such as PDA or mobile phone, or in the form of a portable dedicated RFID reader} - G06K 7/12: using a selected wavelength, e.g. to sense red marks and ignore blue marks - G06K 7/14: using light without selection of wavelength, e.g. sensing reflected white light {(G06K7/10831 - G06K7/1097 take precedence)} - A61B 5/062: {using magnetic field} - A61B 18/14: Probes or electrodes therefor - A61B 2034/2051: {Electromagnetic tracking systems} - A61B 2090/3945: {Active visible markers, e.g. light emitting diodes} - A61B 2090/3954: {magnetic, e.g. NMR or MRI} - A61B 2090/3958: {emitting a signal} - A61B 2090/3975: {active} - A61B 2562/0223: Magnetic field sensors - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - G06K: GRAPHICAL DATA READING (image or video recognition or understanding G06V); PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS ## Abstract Provided herein are systems, devices, assemblies, and methods for localization of a tag in a tissue of a patient. For example, provided herein are systems, devices, and methods employing an implantable tag that emits sidebands at defined frequencies upon activation by a magnetic field generated by a remote activating device, and a plurality of witness stations configured to detect such sidebands. Also provided herein are herein are systems, devices, and methods employing a detection component that is attached to or integrated with a surgical device. ## Claims ### Claim 1 A system comprising: a) a tag, said tag comprising a radio-frequency identification (RFID) chip and an antenna, wherein said tag emits a sideband at a defined frequency, upon activation by a magnetic field; b) a remote activation device that generates a magnetic field within a region of the tag; c) a plurality of witness stations, each said witness station comprising an antenna configured to detect said sideband; and d) a component that is attachable to a medical device, wherein said component comprises: i) at least two medical device location emitters, and ii) an indicator comprising a visual display that presents distance to tag information, and spatial orientation, for said medical device. ### Claim 2 (depends on 1) The system of claim 1, wherein said tag emits said sideband at a frequency defined by a number programmed into a counter in said RFID chip. ### Claim 3 (depends on 1) The system of claim 1, wherein said antenna of said tag comprises a coil antenna. ### Claim 4 (depends on 1) The system of claim 1, wherein said remote activation device comprises an excitation coil. ### Claim 5 (depends on 1) The system of claim 1, wherein said remote activation device comprises a pad configured to be placed in proximity to a patient having said tag embedded in said patient. ### Claim 6 (depends on 5) The system of claim 5, wherein said pad further comprises said plurality of witness stations. ### Claim 7 (depends on 1) The system of claim 1, wherein each witness station comprises a plurality of antennas. ### Claim 8 (depends on 7) The system of claim 7, wherein each of said witness station antennas feed a receiver channel that is time-division multiplexed. ### Claim 9 (depends on 7) The system of claim 7, wherein said plurality of antennas within at least one of said plurality of witness stations are arranged in an orthogonal manner to each other. ### Claim 10 (depends on 1) The system of claim 1, further comprising a computer system that receives information from said plurality of witness stations and generates information about a position of said tag. ### Claim 11 (depends on 1) The system of claim 1, wherein said component comprises a sleeve that slips over a portion of said medical device. ### Claim 12 (depends on 1) The system of claim 1, wherein said medical device comprises an electrocautery device. ### Claim 13 (depends on 1) A method of identifying a position of a tag, comprising: a) providing the system of claim 1; b) placing the tag in a human subject; c) generating a magnetic field with the activation device; and d) identifying a position of said tag in said subject by detecting said sideband emitted from said tag with said witness stations. ### Claim 14 (depends on 13) The method of claim 13, wherein said position comprises relative location of said tag to said medical device. ### Claim 15 (depends on 13) The method of claim 13, wherein said position comprises distance of said tag to said medical device. ### Claim 16 A system comprising: a) a tag, said tag comprising a radio-frequency identification (RFID) chip, wherein said tag emits a sideband at a defined frequency upon activation by a magnetic field; b) a component that is attachable to a medical device, wherein said component comprises: i) at least two medical device location emitters, and ii) an indicator comprising a visual display that presents distance to tag information, and spatial orientation, for said medical device; c) a remote activation device that generates a magnetic field within a region of the tag and the at least two medical device location emitters; and d) a plurality of witness stations, each said witness station comprising an antenna configured to detect said sideband: i) emitted from said tag or changes in a magnetic field generated by said remote activating device in response to said tag; and ii) emitted from said at least two medical device location emitters or changes in the magnetic field generated by said remote activation device in response to said at least two medical location device emitters. ### Claim 17 (depends on 16) The system of claim 16, wherein said tag emits a sideband at a frequency defined by a number programmed into a counter in said RFID chip. ### Claim 18 (depends on 16) The system of claim 16, wherein said remote activation device comprises a pad configured to be placed under a patient having said tag embedded in said patient. ### Claim 19 (depends on 18) The system of claim 18, wherein said pad further comprises said plurality of witness stations. ### Claim 20 (depends on 16) The system of claim 16, wherein each of said at least two medical device location emitters comprises an antenna and emits a sideband at a defined frequency upon activation by the magnetic field. ### Claim 21 (depends on 16) The system of claim 16, wherein said at least two medical device location emitters are positioned to permit said plurality of witness stations to detect orientation of said medical device relative to said tag. ### Claim 22 (depends on 16) The system of claim 16, wherein said component comprises a sleeve that slips over a portion of said medical device. ### Claim 23 (depends on 16) The system of claim 16, wherein said medical device comprises an electrocautery device.