# US 12,224,094 B2 · Magnetic signature imprinting system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,224,094 B2 - Document ID: US12224094B2 - Status: Granted - Kind: B2 - Application number: 17/955,120 - Filed: 2022-09-28 - Published: 2023-03-30 - Granted: 2025-02-11 - Earliest claimed: 2021-09-29 - Assignees: Bard Access Systems, Inc. - Applicants: Bard Access Systems, Inc. - Inventors: William Robert McLaughlin; Steffan Sowards; Anthony K. Misener - Web page: https://patentgrep.com/patent/US12224094B2 ## CPC - A61B 5/062: {using magnetic field} - H01F 13/00: Apparatus or processes for magnetising or demagnetising ({devices for holding workpieces using magnetic or electric force acting directly on the workpieces B23Q3/15} ; for degaussing ships B63G9/06; for clocks or watches G04D9/00; {recording or erasing of information on magnetic record carriers G11B5/00} ; demagnetising arrangements for colour television H04N9/29) - A61B 17/3403: {Needle locating or guiding means} - A61B 90/39: {Markers, e.g. radio-opaque or breast lesions markers} - A61B 90/96: using barcodes - A61B 90/98: using electromagnetic means, e.g. transponders - A61B 2017/00876: {magnetic} - A61B 2034/2051: {Electromagnetic tracking systems} - A61B 2090/3954: {magnetic, e.g. NMR or MRI} - A61M 25/0127: {Magnetic means; Magnetic markers} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES - A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)} ## Abstract Disclosed herein is a magnetic signature imprinting system including an imprinting device and a medical device including ferrous elements. The imprinting device includes an active area having a magnet moving system, one or more sensors, and a console. The magnet moving system is configured to change the location or orientation of one or more magnets to generate one or more magnetic fields to imprint a magnetic signature. The one or more sensors are configured to detect one or more characteristics of the medical device and the console is in communication with the magnet moving system and the one or more sensors. ## Claims ### Claim 1 A magnetic signature imprinting system, comprising: an imprinting apparatus configured to operatively engage a medical device, the imprinting apparatus, comprising: a frame; a device engagement member coupled with the frame, the device engagement member configured to receive and position a signature portion of the medical device within an imprinting space of the frame; and a number of magnets selectively positionable with respect to the imprinting space via one or more magnet actuators coupled between the number of magnets and the frame; and a console coupled with the one or more magnet actuators, the console having a number of processors and a non-transitory computer-readable medium having logic stored thereon that, when executed by the number of processors, performs operations that include activating the one or more magnet actuators to (i) displace the number of magnets into an imprinting position defining a magnetic field within the imprinting space, the magnetic field configured to imprint a defined magnetic signature on the signature portion to define an imprinted magnetic signature and (ii) displace the number of magnets away from the imprinting position. ### Claim 2 (depends on 1) The system according to claim 1, wherein the medical device includes a needle, a stylet, a guidewire, an obturator, a probe, or a tunneller. ### Claim 3 (depends on 1) The system according to claim 1, wherein the magnetic signature includes one or more multipoles disposed along the signature portion. ### Claim 4 (depends on 1) The system according to claim 1, wherein the device engagement member includes a trough configured to receive the signature portion of the medical device therein. ### Claim 5 (depends on 1) The system according to claim 1, further comprising a number of magnetometers coupled with the console, the number of magnetometers configured to detect the magnetic field generated by the imprinted magnetic signature on the medical device, wherein the operations further include: receiving electrical signals from the number of magnetometers based on the magnetic field generated by the imprinted magnetic signature; determining the imprinted magnetic signature on the medical device based on the electrical signals from the number of magnetometers; comparing the imprinted magnetic signature with the defined magnetic signature to verify that the imprinted magnetic signature matches the defined magnetic signature; and providing an alert to an operator in response to the comparing. ### Claim 6 (depends on 1) The system according to claim 1, wherein activating the one or more magnet actuators includes selectively (i) displacing at least a first subset of the number of magnets into the imprinting position and (ii) extracting the at least first subset of the number of magnets away from the imprinting position, the at least first subset of the number of magnets chosen based on the defined magnetic signature. ### Claim 7 (depends on 1) The system according to claim 1, wherein the number of magnets includes at least a second subset having a second magnet length and at least a third subset having a third magnet length that is different from the second magnet length. ### Claim 8 (depends on 1) The system according to claim 1, wherein the imprinted magnetic signature includes a series of dipoles disposed along the signature portion. ### Claim 9 (depends on 8) The system according to claim 8, wherein at least one dipole includes a first length and at least one other dipole includes a second length different from the first length. ### Claim 10 (depends on 8) The system according to claim 8, wherein at least one dipole includes a first orientation and at least one other dipole includes a second orientation rotated 180 degrees from the first orientation. ### Claim 11 (depends on 8) The system according to claim 8, wherein a first spacing between a first pair of adjacent dipoles is different from a second spacing between a second pair of adjacent dipoles. ### Claim 12 (depends on 1) The system according to claim 1, wherein the number of magnets includes passive magnets. ### Claim 13 (depends on 12) The system according to claim 12, wherein the passive magnets include multipoles. ### Claim 14 (depends on 1) The system according to claim 1, further comprising: a number of identification sensors coupled with the console, the number of identification sensors configured to provide at least one of data or electrical signals associated with one or more characteristics of the medical device, wherein the operations further include: receiving the at least one of data or electrical signals from the number of identification sensors; determining an identity of the medical device based on the at least one of data or electrical signals; and establishing the defined magnetic signature based on the identity. ### Claim 15 (depends on 10) The system according to claim 10, wherein: the number of identification sensors includes a radio frequency identification (RFID) reader, and the operations further include receiving RFID data from an RFID tag associated with the medical device, the RFID data including the identity. ### Claim 16 (depends on 14) The system according to claim 14, wherein: the number of identification sensors includes a barcode reader, and the operations further include obtaining barcode data from a barcode associated with the medical device, the barcode data including the identity. ### Claim 17 (depends on 14) The system according to claim 14, wherein: the number of identification sensors include one or more first sensors configured to provide the at least one of data or electrical signals based on a number of physical characteristics of the medical device, and the operations further include determining the identity based on the number of physical characteristics. ### Claim 18 (depends on 17) The system according to claim 17, wherein the one or more first sensors include at least one of an inductive sensor, an impedance sensor, a capacitive sensor, or an optical sensor. ### Claim 19 (depends on 17) The system according to claim 17, wherein the number of physical characteristics include one or more of a physical dimension or a shape of the medical device. ### Claim 20 (depends on 19) The system according to claim 19, wherein the physical dimension includes at least one of a length or a diameter of a cannula. ### Claim 21 (depends on 1) The system according to claim 1, wherein at least a fourth subset of the number of magnets is rotatable between a first magnet orientation and a second magnet orientation rotated 180 degrees with respect to the first magnet orientation. ### Claim 22 (depends on 21) The system according to claim 21, wherein: the imprinting apparatus includes one or more orienting actuators coupled between the at least fourth subset of the number of magnets and the frame, and the operations further include activating the one or more orienting actuators to selectively rotate one or more of the at least fourth subset of the number of magnets between the first magnet orientation and the second magnet orientation based on the defined magnetic signature. ### Claim 23 (depends on 1) The system according to claim 1, wherein: at least a fifth subset of the number of magnets includes magnets arranged in linear array extending along a longitudinal axis of the imprinting space, each of the at least fifth subset of the number of magnets is coupled to the frame via a linear magnet actuator, and activating the one or more magnet actuators includes activating one or more of the linear magnet actuators to linearly displace one or more of the at least fifth subset of the number of magnets laterally toward the longitudinal axis of the imprinting space based on the defined magnetic signature. ### Claim 24 (depends on 23) The system according to claim 23, wherein: at least a sixth subset of the number of magnets includes magnets arranged along a turntable, the turntable is rotatable about a turntable axis that is oriented perpendicular to the longitudinal axis of the imprinting space so that rotating the turntable selectively displaces each of magnets of the at least sixth subset into and away from the imprinting position, the turntable is coupled with the frame via a turntable actuator, and activating the one or more magnet actuators includes activating the turntable actuator based on the defined magnetic signature. ### Claim 25 (depends on 24) The system according to claim 24, wherein: at least a seventh subset of the number of magnets includes magnets arranged along a circumference of a number of wheels, each of the number of wheels is rotatable about a corresponding wheel axis that is oriented parallel to the longitudinal axis of the imprinting space so that rotating the number of wheels displaces each of the magnets of the seventh subset into and away from the imprinting position, each wheel is coupled with the frame via a corresponding wheel actuator, and activating the one or more magnet actuators includes selectively activating at least one of the corresponding wheel actuators based on the defined magnetic signature. ### Claim 26 (depends on 25) The system according to claim 25, wherein the magnets of the at least fifth, sixth, and seventh subsets include dipoles having different dipole lengths and different dipole orientations. ### Claim 27 (depends on 1) The system according to claim 1, wherein: the device engagement member is coupled with the frame via an engagement member actuator configured to displace the engagement member along a longitudinal axis of the imprinting space, the operations further include activating the engagement member actuator based on the defined magnetic signature to displace the engagement member between (i) a first engagement member position defining a first longitudinal position of the signature portion within the imprinting space and (ii) at least a second engagement member position defining a second longitudinal position of the signature portion within the imprinting space, and the first engagement member position is different from the at least second engagement member position. ### Claim 28 (depends on 27) The system according to claim 27, wherein: the imprinting apparatus includes a number of position sensors configured to determine a longitudinal position of the signature portion within the imprinting space, and the operations further include at least one of notifying an operator regarding the longitudinal position of the signature portion or activating the engagement member actuator to adjust the longitudinal position of the signature portion. ### Claim 29 (depends on 28) The system according to claim 28, wherein: the number of position sensors include one or more magnetometers configured to determine the longitudinal position of at least a portion of the imprinted magnetic signature within the imprinting space, and the operations further include activating the engagement member actuator to adjust the longitudinal position of the at least a portion of the imprinted magnetic signature within the imprinting space.