# US 10,368,943 B2 · Tri-curve elongate medical device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,368,943 B2 - Document ID: US10368943B2 - Status: Granted - Kind: B2 - Application number: 15/220,128 - Filed: 2016-07-26 - Published: 2017-01-26 - Granted: 2019-08-06 - Earliest claimed: 2013-03-12 - Assignees: St. Jude Medical, Atrial Fibrillation Division, Inc. - Applicants: St. Jude Medical, Atrial Fibrillation Division, Inc. - Inventors: Lindsay Lam - Web page: https://patentgrep.com/patent/US10368943B2 ## CPC - A61B 18/1492: {having a flexible, catheter-like structure, e.g. for heart ablation (A61B18/1477 takes precedence)} - A61M 25/0105: {Steering means as part of the catheter or advancing means; Markers for positioning (systems for detection of markers A61B)} - A61M 25/0136: {Handles therefor} - A61M 25/0147: {with movable mechanical means, e.g. pull wires} - A61B 5/068: {using impedance sensors} - A61B 2018/00577: {Ablation} - A61B 2018/00797: {measured by multiple temperature sensors} - A61B 2018/00821: {measured by a thermocouple} - A61B 2018/00839: {Bioelectrical parameters, e.g. ECG, EEG} - A61B 2018/00875: {Resistance or impedance} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - 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 An embodiment of an elongate medical device may comprise a shaft body having a distal end portion and a proximal end portion and three or more deflection wire assemblies, each deflection wire assembly comprising a flat wire coupled to the distal end portion and configured to deflect the distal end portion. Each flat wire may have a respective length defining a respective deflection radius, wherein each deflection radius is different. ## Claims ### Claim 1 An elongate medical device comprising: a shaft comprising a distal end portion and a proximal end portion, wherein the shaft has an axis from the proximal end portion to the distal end portion; and a handle assembly coupled to the shaft, the handle assembly comprising: a first manipulation mechanism configured to deflect the shaft in a first manner and in a predetermined direction relative to the axis; and a second manipulation mechanism configured to deflect the shaft in a second manner in substantially the same predetermined direction relative to the axis, where the first manipulation mechanism is coupled with a first deflection wire assembly and the second manipulation mechanism is coupled with a second deflection wire assembly, where the first deflection wire assembly deflects the shaft at a first curve radius and the second deflection wire assembly deflects the shaft at a second curve radius, and wherein each of the first and the second deflection wire assemblies comprises a flat wire, each flat wire having a distal end, wherein the distal ends of the flat wires are coupled to a common location of the distal end portion of the shaft, further wherein each flat wire has a respective length that is different from each other flat wire, wherein the respective length of each flat wire defines a respective radius of deflection of the distal end portion of the shaft. ### Claim 2 (depends on 1) The elongate medical device of claim 1, wherein the first manner of deflecting the shaft includes the first curve radius at the distal end portion in the predetermined direction and the second manner of deflecting the shaft includes the second curve radius in the same predetermined direction and the first and second curve radii are different. ### Claim 3 (depends on 1) The elongate medical device of claim 1, wherein the handle assembly further comprises a third manipulation mechanism configured to deflect the shaft in a third manner in substantially the same predetermined direction relative to the axis. ### Claim 4 (depends on 3) The elongate medical device of claim 3, wherein the third manipulation mechanism is coupled with a third deflection wire assembly; wherein the third deflection wire assembly deflects the shaft at a third curve radius: and wherein the first, the second, and the third curve radii are different. ### Claim 5 (depends on 4) The elongate medical device of claim 4, wherein at least one of the second manipulation mechanism and the third manipulation mechanism is configured for opposing rotational movement by a user to selectively apply tension to the second or the third deflection wire assemblies. ### Claim 6 (depends on 1) The elongate medical device of claim 1, wherein the first manipulation mechanism is a linear actuation mechanism configured for linear movement and the second manipulation mechanism is a rotary actuation mechanism configured for rotational movement. ### Claim 7 (depends on 6) The elongate medical device of claim 6, wherein the linear actuation mechanism is configured to deflect the distal end portion with the first curve radius and the rotary actuation mechanism is configured to deflect the distal end portion with the second curve radius, where the second curve radius is larger than the first curve radius. ### Claim 8 (depends on 1) The elongate medical device of claim 1, wherein each of the first and the second deflection wire assemblies further comprises a plurality of activation wires coupled with the flat wires. ### Claim 9 (depends on 1) The elongate medical device of claim 1, further comprising a tip electrode coupled to the distal end portion of the shaft. ### Claim 10 (depends on 9) The elongate medical device of claim 9, wherein the common location is proximate to the tip electrode.