# US 7,613,499 B2 · Method and system for concurrent localization and display of a surgical catheter and local electrophysiological potential curves > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,613,499 B2 - Document ID: US7613499B2 - Status: Granted - Kind: B2 - Application number: 11/392,035 - Filed: 2006-03-29 - Published: 2006-10-26 - Granted: 2009-11-03 - Earliest claimed: 2005-03-30 - Assignees: Siemens Aktiengesellschaft - Inventors: Norbert Rahn; Arne Westphal - Web page: https://patentgrep.com/patent/US7613499B2 ## CPC - A61B 5/283: Invasive - A61B 5/065: {Determining position of the probe employing exclusively positioning means located on or in the probe, e.g. using position sensors arranged on the probe} - A61B 5/7445: {Display arrangements, e.g. multiple display units} - A61B 5/06: Devices, other than using radiation, for detecting or locating foreign bodies {; Determining position of diagnostic devices within or on the body of the patient} - A61B 6/12: Arrangements for detecting or locating foreign bodies - A61B 18/1492: {having a flexible, catheter-like structure, e.g. for heart ablation (A61B18/1477 takes precedence)} - A61B 2018/00351: {Heart} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract A method for providing measuring data for the precise local positioning of an ablation catheter comprises the recording of electrophysiological potential curves in a plurality of positions of the ablation catheter with regard to a potential measurement on a reference catheter. An x-ray image is recorded in each of the positions and the position of the ablation catheter in each instance on the x-ray image is characterized by a marker. The electrophysiological potential curves are coupled in a data-related manner with the markers. When a marker on the screen displaying the x-ray image is clicked on, the associated electrophysiological potential curves appear highlighted on another screen, if necessary in color or with increased brightness. Conversely, the x-ray image with the marker is queried, i.e. displayed and the marker highlighted when the potential curve is activated on a screen displaying the potential curve. ## Claims ### Claim 1 A method of providing measuring data for a precise local positioning of a surgical catheter, comprising: recording electrophysiological potential curves at a plurality of positions of the surgical catheter in a vessel or organ by the surgical catheter; relating each recorded electrophysiological potential curve to an electric potential measurement executed by a reference catheter located in the vessel or organ; recording an x-ray image at each of the plurality of positions, each x-ray image at least partially showing the surgical catheter; marking a position of the surgical catheter in each x-ray image using markers; assigning the electrophysiological potential curves to the markers; displaying on a screen at least one of the x-ray images having at least one of the markers or displaying on the screen at least one of the recorded electrophysiological potential curves; activating the at least one marker of the displayed x-ray image or the at least one displayed electrophysiological potential curve; and querying and displaying such electrophysiological potential curve assigned to the activated marker or such x-ray image having such marker related to the activated electrophysiological potential curve, wherein different electrophysiological potential curves are displayed in different colors, and a related marker is displayed in such color corresponding to the respective electrophysiological potential curve, and wherein the different colors are determined by a color coding algorithm, the color coding algorithm based on a delay time of a signal included in the electrophysiological potential curves, the delay time of the signal calculated relative to a reference signal provided by the reference catheter. ### Claim 2 (depends on 1) The method according to claim 1, wherein the surgical catheter is an ablation catheter and wherein the electrophysiological potential curves are recorded using the ablation catheter. ### Claim 3 (depends on 1) The method according to claim 1, wherein the at least one marker is activated by clicking on the marker, and querying the related electrophysiological potential curve includes displaying the related electrophysiological potential curve on the screen. ### Claim 4 (depends on 1) The method according to claim 1, wherein marking the position of the surgical catheter in each x-ray image using the markers includes manually setting the markers on the screen by a user. ### Claim 5 (depends on 1) The method according to claim 1, wherein marking the position of the surgical catheter in each x-ray image using the markers includes automatically setting the markers by an image recognition system. ### Claim 6 (depends on 1) The method according to claim 1, further comprising assigning to each electrophysiological potential curve a current parameter setting of an x-ray system, the x-ray system used for recording the x-ray images and each current parameter setting corresponding to such recorded x-ray image related to the respective electrophysiological potential curve. ### Claim 7 (depends on 6) The method according to claim 6, further comprising displaying the current parameter setting upon activating the respective electrophysiological potential curve. ### Claim 8 (depends on 7) The method according to claim 7, further comprising re-adjusting the current parameter setting by the x-ray system upon activating the respective electrophysiological potential curve. ### Claim 9 An x-ray recording system, comprising: a surgical catheter configured to acquire data for electrophysiological potential curves at a plurality of positions in a vessel or organ; an x-ray system configured to record an x-ray image at each position; a registration system connected to the x-ray system configured to record the electrophysiological potential curves; an activating unit configured to activate at least one of the recorded x-ray images or at least one of the recorded electrophysiological potential curves, and a screen, wherein the at least one activated recorded x-ray image or the at least one activated recorded electrophysiological potential curve is displayed on the screen, wherein the registration system is configured to interrelate the electrophysiological potential curves to the x-ray images such that upon activating the at least one recorded x-ray image's respective electrophysiological potential curve the interrelated electrophysiological potential curve respectively x-ray image is queried; wherein querying the interrelated electrophysiological potential curve respectively x-ray image includes displaying the interrelated electrophysiological potential curve respectively x-ray image on the screen, wherein different electrophysiological potential curves are displayed in different colors, and a related marker is displayed in such color corresponding to the respective electrophysiological potential curve, and wherein the different colors are determined by a color coding algorithm, the color coding algorithm based on a delay time of a signal included in the electrophysiological potential curves, the delay time of the signal calculated relative to a reference signal provided by the reference catheter. ### Claim 10 (depends on 9) The x-ray recording system according to claim 9, further comprising: an image processing system configured to combine data originating from the x-ray system and the registration system. ### Claim 11 (depends on 9) The x-ray recording system according to claim 9, further comprising: a synchronizing clock configured to synchronize the x-ray system and the registration system. ### Claim 12 (depends on 11) The x-ray recording system according to claim 11, wherein the x-ray system and the registration system are connected by a network, and the synchronizing clock is a network clock. ### Claim 13 (depends on 9) The x-ray recording system according to claim 9, wherein the x-ray recording system is an x-ray angiography system.