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WO2001068178A1 - Catheter orientable - Google Patents

Catheter orientable Download PDF

Info

Publication number
WO2001068178A1
WO2001068178A1 PCT/US2001/007441 US0107441W WO0168178A1 WO 2001068178 A1 WO2001068178 A1 WO 2001068178A1 US 0107441 W US0107441 W US 0107441W WO 0168178 A1 WO0168178 A1 WO 0168178A1
Authority
WO
WIPO (PCT)
Prior art keywords
wire
catheter system
distal end
catheter
proximal end
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2001/007441
Other languages
English (en)
Inventor
Oscar Jimenez
Jon T. Mcintyre
Edward L. Sinofsky
William H. Stanhope
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cardiofocus Inc
Original Assignee
Cardiofocus Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cardiofocus Inc filed Critical Cardiofocus Inc
Priority to AU2001245528A priority Critical patent/AU2001245528A1/en
Publication of WO2001068178A1 publication Critical patent/WO2001068178A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/0105—Steering means as part of the catheter or advancing means; Markers for positioning
    • A61M25/0133—Tip steering devices
    • A61M25/0147—Tip steering devices with movable mechanical means, e.g. pull wires
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/0105—Steering means as part of the catheter or advancing means; Markers for positioning
    • A61M25/0133—Tip steering devices
    • A61M25/0136—Handles therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/0105—Steering means as part of the catheter or advancing means; Markers for positioning
    • A61M25/0133—Tip steering devices
    • A61M2025/0161—Tip steering devices wherein the distal tips have two or more deflection regions
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/0105—Steering means as part of the catheter or advancing means; Markers for positioning
    • A61M25/0133—Tip steering devices
    • A61M25/0144—Tip steering devices having flexible regions as a result of inner reinforcement means, e.g. struts or rods
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/0105—Steering means as part of the catheter or advancing means; Markers for positioning
    • A61M25/0133—Tip steering devices
    • A61M25/0152—Tip steering devices with pre-shaped mechanisms, e.g. pre-shaped stylets or pre-shaped outer tubes

Definitions

  • the present invention relates to medical catheters, and more particularly to structures for steering the distal region of a catheter.
  • Minimally invasive surgery is a term that is often used to describe the diagnosis or treatment of a patient without the need for an extensive incision in the patient's body, and it is increasingly becoming the technique of choice for an expanding range of medical procedures.
  • Devices used in this type of surgery include a first portion that is introduced within the body through a small incision or existing body opening, and a second portion that remains outside of the body to interface with additional equipment and to provide controls for functions related to a first portion of the device.
  • a flexible catheter-type implement is required for access.
  • the catheter can be self-guiding. Other procedures require that the catheter be guided or even steerable.
  • Known steering devices include pull-wire systems wherein a wire is secured to an internal portion or structure within a catheter near its distal end, as well as to a manually manipulable member at its proximal end. The member is displaced to apply tension to the wire, pulling it in the proximal direction, thereby causing the distal tip of the catheter to bend toward the tensed wire. When the tension is reduced or released, the catheter tip will usually return to a normal (unfiexed) state.
  • pull- wire systems have utility, they also have limitations. For example, when the pull- wire is placed under tension, the plane (or azimuthal direction) of deflection of the catheter is often ill-defined. Yet another deficiency in the pull wire system is that the release of tension on the pull-wire does not necessarily ensure that the tip will return to its original position because the slack wire does not provide a restorative force to the catheter tip to reposition it. Some instrument manufacturers have attempted to address this limitation by providing a second, opposing pull-wire. However, as with a single pull-wire, a second pull-wire can also yield unpredictable deflection. Some systems include more than two wires but additional wires or other structures are undesirable because the space within the catheter lumen is scarce — especially for very small diameter catheters (e.g., 5 French or less). It is therefore desirable to obtain alternatives to pull-wire type steering systems.
  • a catheter system includes an elongate body, such as a single or multi-lumen catheter having a proximal end and a distal end.
  • First and second wires are enclosed within a lumen of the elongate body, and the wires are joined to each other at one or more points.
  • a portion of the first wire can be flattened, such as its distal region, and both the first and second wires can be made of resilient materials.
  • a spring can be provided to impart a bias force upon one or both of the wires and provide additional column strength.
  • a spring can be joined to the tip and extend over the flattened blade portion of the first wire to preclude buckling and/or ensure that the steering elements bend in a desired direction.
  • a handle unit and steering mechanism can fix the first wire at a predetermined location to prevent translatory movement of the first wire along the longitudinal axis, while permitting translatory movement of the second wire from an initial position to a forward position.
  • catheter as used herein is intended to encompass elongated probe instruments, generally, including instruments designed to travel through blood vessels, heart chambers, ducts, airways, the throat, stomach or intestines as well as instruments that are introduced into the body directly or via a trocar or large bone needle.
  • catheter is also meant to encompass endoscopes, laproscopes, culpascopes, cystoscopes and the like.
  • FIG. 1 is a simplified view of a medical system in accordance with the invention
  • FIG. 2 is a schematic illustration of the distal end of a system according to the invention configured for a Josephson type procedure
  • FIG. 3 is a schematic illustration of the distal end of a system according to the invention configured for a Cournand procedure
  • FIG. 4 is a schematic illustration of the distal end of a system according to the invention configured for an atrioventricular procedure
  • FIG. 5 is a schematic illustration of the distal end of a system according to the invention configured for a coronary sinus procedure
  • FIG. 6 is an exploded view of a catheter portion of the system of FIG. 1;
  • FIG. 7 is an exploded view of a handle portion of the system of FIG. 1;
  • FIG. 8 is a sectional view of a handle portion of FIG. 1, taken along line
  • FIG. 9 is an exploded view of a system with a removable catheter portion
  • FIG. 10 illustrates an embodiment of the invention, having an extendable catheter portion
  • FIG. 11 illustrates a system having a pre-shaped catheter in a non-deflected state
  • FIG. 12 depicts the system of FIG. 11 in a deflected state
  • FIG. 13 is a sectional view of a distal portion of the system in association with an open-tip catheter
  • FIG. 14 is a sectional view of a distal portion of an alternative configuration for an open-tip catheter.
  • FIG. 15 is a sectional view of a distal portion of a system configured for use with a radiant energy source.
  • FIG. 1 illustrates a medical system 10 in accordance with the invention that includes a handle portion 11 having a proximal end 12 and a distal end 14.
  • An elongate body 16 such as a flexible catheter, having a proximal end 18 and a distal end 20, is secured to the handle portion 11.
  • FIG. 2 shows the distal tip of the elongate body 16 configured for a Josephson Type procedure.
  • FIG. 3 depicts a configuration that is suitable for a
  • FIG. 4 illustrates a configuration suitable for treatment of the atrioventricular bundle (bundle of His); and FIG. 5 shows a configuration for the coronary sinus.
  • Exemplary devices can include an elongate body or catheter that is aboutlOO cm to 130 cm in length, with a 3 to 14 French diameter and up to a 25 cm distal curve radius.
  • FIG. 6 an exploded view of the elongate body /catheter 16 is illustrated.
  • a first wire 26 and a second wire 28 are shown within a central lumen of a flexible catheter 16.
  • the various lumens can be lined or coated with lubricious materials such as Teflon® or other fluoropolymer compositions.
  • the first and second wires, 26 and 28 respectively, are engaged or attached to each other at a point near the distal end of the catheter 16.
  • One or both wires can extend through the catheter lumen to the handle portion 11 (shown in FIG. 1).
  • wires 26 and 28 are not joined along their entire length, so that urging the second wire axially forward (toward its distal end) causes the first wire to be deflected or bent, thereby deflecting a portion of the catheter 16 to provide configurations such as those illustrated in FIGS. 2-5.
  • Wire 28 is sufficiently stiff to ensure that the axial compressive force started when it moved ("pushed") forward or is transmitted to the distal end of the catheter 16 where wires 26 and 28 are joined.
  • the "push" wire element should have a sufficiently high compressive yield strength to withstand buckling during normal manual or automated operation of the steering mechanism. This will typically require a compressive yield strength of at least about 1,000 psi.
  • wire 28 has a compressive yield strength ranging from about 10,000 psi to about
  • the first wire 26 can include a flattened portion 30, e.g., near or at its distal end, to ensure that the first wire consistently deflects in a single plane.
  • This flattened portion can be formed as an integral part of the wire by hot roller processing or other pressure applying techniques.
  • the wire 26 can have a two (or more part) construction with a ribbon-like strip welded to the wire body. It may also be advantageous to use superelastic materials, such as nitinols
  • first and second wires 26 and 28 can be rotated within the catheter lumen, in unison, by rotating the second knob 24 on the handle portion 11. Alternatively, the entire catheter 16 can be rotated.
  • the proximal end of the catheter 16 can include a jacket that is braided, wrapped or otherwise reinforced with a composite structure. In such embodiments, the distal portion would typically not include a braided jacket and/or be made of a more pliant material than the jacket near the proximal end.
  • the catheter 16 will return to its pre-deflection orientation when wire 28 is retracted back to its original position. Because wire 28 has high compressive and tensile strength, retraction will transmit a tensile force to the catheter tip thereby ensuring return of the tip to its unflexed state.
  • the wires can be made of a flexure-resilient metal, such as stainless steel or a shape memory material such as nitinol, that can return the catheter to a pre-deflection configuration without pushing or pulling on the wire.
  • a bias element such as a helical spring wrapped at about 200 turns per inch, can also be provided to provide a further restorative force.
  • a spring 32 is associated with the first wire to impart a bias force upon the first wire.
  • the spring 32 surrounds a portion of the first wire and is secured thereto.
  • the first wire 26 and the spring 32 can be located entirely within the distal half of the catheter 16.
  • the spring (or the entire wire 26) can be replaced by a hypo- tube (as shown in FIG. 16) that functions in a manner similar to the spring.
  • the flattened portion 30 can be attached to a hypo-tube 33 as the second wire 28 passes through the tube and is joined to the flattened wire end 30.
  • a short segment of the flexible (e.g., polymer) tubing 37 can be attached to the distal end of the hypotube 33 to cover the distal blade 30 and exposed portion of the second wire 28 to ensure that both bend in the same direction.
  • the working element 34 can include any of a number of devices known in the art for performing catheter based procedures.
  • the working element 34 is a spherical electrode.
  • Other examples include a radiopaque marker band or a soft tip (atraumatic).
  • Three optional ECG rings 36, 38 and 40 can be disposed on the outer surface of the catheter 16 in a spaced-apart relationship.
  • the working element can be light diffusing element for phototherapy as described in U.S. Patent 5,908,415 herein incorporated by reference.
  • FIG. 7 shows features of the handle portion 11 in a cross-sectional view.
  • the second knob 22 includes a first portion 46 that is received and rotatable within the cap 44.
  • a second portion 48 of the second knob 22 is exposed and textured so as to be readily grasped or pushed by a surgeon to rotate the second knob with respect to the handle portion as a whole.
  • a steering assembly 50 includes a bolt 52 that is secured to a lug 54 by a nut 56.
  • One or more posts 58 and 58' are disposed within sockets 60 and 60' on the lug 54 and extend outwardly therefrom.
  • the one or more posts 58 and 58' engage a spiral groove or thread 62 defined by an inner surface of the first knob 22.
  • Also receivable within the first knob 22 is a distal portion 64 of a handle unit 66.
  • the distal portion 64 includes one or more slots 68 and 68' through which posts 58 and 58' project, as is most clearly seen in FIG. 8.
  • Axial movement limits for the steering assembly 50 are established by the length of the one or more slots 68 and 68'.
  • An anchor 70 is disposed within a distal portion 72 of the handle unit 66 and is rotatable therein.
  • the second knob 24 is disposed around the distal portion of the handle unit and is secured to the handle unit 66 and the anchor 70 with a pin 74 that passes through a slot 76 in the handle unit 66.
  • the rotational limit of the second knob 24 and the anchor 70 is established by the length of the slot 76.
  • a set screw 78 is provided to inhibit rotation of the second knob 24 with respect to the handle unit 66.
  • An end plug 80 seals the handle unit and provides a passage into the handle unit 66 for wiring 82 that is in communication with a plug or connector 84, as is known in the art.
  • the proximal end of the first wire 26 passes through the end plug 42, the cap 44, and the steering assembly 50, and is fixed to the anchor 70.
  • the first wire 26 is not axially translatable.
  • the anchor is rotatable, the first wire 26 can be rotated to select a deflection plane when the second knob 24 is rotated.
  • the proximal end of the second wire 28 passes through the end plug 42 and the cap 44. But instead of being fixed with respect to the handle unit 66, the second wire 28 is secured to the steering assembly 50 and is thus axially translatable when the first knob 22 is rotated.
  • FIG. 9 illustrates a proximal portion of a flexible catheter 86 having a first lumen 88 and a second lumen 90, as well as a first wire 26, a second wire 28, and a working element 92, such as a radiant energy source.
  • the first and second wires 26 and 28 can be slid in and out of the first lumen 88; and the working element 92 can be slid in and out of the second lumen 90.
  • FIG. 10 illustrates a closed- tip catheter 94 having a lumen 96 within which are slidably disposed first and second wires 26, 28. Also shown is a lumen or passage 98 with a patient's body that has an opening 100. As illustrated, the catheter 94 has been deflected with the wires 26 and 28, as described above, to align a distal tip 102 with the opening 100. The distal tip 102 can now be advanced, as shown by the dashed lines, in a linear manner toward and into the opening 100. The distal tip 102 is similarly retracted.
  • FIG. 11 and 12 illustrate yet another feature of the catheter system that is advantageous for positioning, wherein the catheter is provided with a permanent or temporary deformation that is not related to the deflection which has been described herein.
  • FIG. 11 shows a catheter having an element 104 that imparts a selected bend to the catheter in its non-deflected state.
  • FIG. 12 illustrates the catheter in a deflected state.
  • FIG. 13 depicts yet another configuration for the invention that benefits from slidable elements. More particularly, a sectional view of a distal catheter tip is shown wherein the distal tip defines an opening 106. Also shown are a slidable working element 108 and wires 26, 28. FIG. 14 also shows an open-tip configuration, wherein a portion 110 of the tip that defines an opening 112 is tapered. Alternatively, a taper can be achieved by a step-up in the internal lumen size. The taper creates an asymmetric opening 112 useful for introducing and retracting other instruments through opening 106.
  • a catheter includes a light source 114 as a working element and substantially transparent material 116 that permits light to pass from the light source 114 to a point exterior to the catheter. Also shown is a flattened blade 30 that is polished and/or coated to make it reflective. Such reflectivity can be achieved by coating the surface of the blade 30 with a reflective metallic coating material, such as gold, or a suitable dielectric coating or by polishing the blade material itself (e.g., polished stainless steel).
  • a reflective metallic coating material such as gold, or a suitable dielectric coating

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Pulmonology (AREA)
  • Anesthesiology (AREA)
  • Biophysics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Mechanical Engineering (AREA)
  • Media Introduction/Drainage Providing Device (AREA)

Abstract

L'invention concerne un système de cathéter comprenant un corps allongé (16) possédant une extrémité proximale (12) et une extrémité distale (14), un premier fil (26) contenu dans le corps allongé, et un second fil (28) contenu dans le corps allongé et mis en prise avec le premier. Le fait de pousser le second fil vers l'extrémité distale du corps allongé entraîne le fléchissement du corps allongé.
PCT/US2001/007441 2000-03-10 2001-03-08 Catheter orientable Ceased WO2001068178A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001245528A AU2001245528A1 (en) 2000-03-10 2001-03-08 Steerable catheter

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US52295700A 2000-03-10 2000-03-10
US09/522,957 2000-03-10

Publications (1)

Publication Number Publication Date
WO2001068178A1 true WO2001068178A1 (fr) 2001-09-20

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PCT/US2001/007441 Ceased WO2001068178A1 (fr) 2000-03-10 2001-03-08 Catheter orientable

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AU (1) AU2001245528A1 (fr)
WO (1) WO2001068178A1 (fr)

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WO2008069772A1 (fr) 2006-12-07 2008-06-12 Cordis Corporation Système de cathéter orientable
WO2010009720A1 (fr) * 2008-07-23 2010-01-28 Polydiagnost Entwicklungs-, Produktions-, Vertriebs-, Und Service Gesellschaft Mbh Endoscope commandable
US7670351B2 (en) 2006-05-20 2010-03-02 Darrell Hartwick Medical device using beam construction and methods
US7771388B2 (en) 2005-10-12 2010-08-10 Daniel Olsen Steerable catheter system
WO2012019232A1 (fr) * 2010-08-13 2012-02-16 Cathrx Ltd Ensemble cathéter ayant une capacité de réglage de taille de déflexion
WO2014166968A1 (fr) * 2013-04-08 2014-10-16 Cardio3 Biosciences S.A. Mécanisme de commande de direction pour cathéter
US8961398B2 (en) 2004-04-21 2015-02-24 Acclarent, Inc. Methods and apparatus for treating disorders of the ear, nose and throat
US9220879B2 (en) 2004-04-21 2015-12-29 Acclarent, Inc. Devices, systems and methods useable for treating sinusitis
US9333031B2 (en) 2013-04-08 2016-05-10 Apama Medical, Inc. Visualization inside an expandable medical device
US9572480B2 (en) 2006-09-15 2017-02-21 Acclarent, Inc. Methods and devices for facilitating visualization in a surgical environment
US9610006B2 (en) 2008-11-11 2017-04-04 Shifamed Holdings, Llc Minimally invasive visualization systems
US9610428B2 (en) 2004-04-21 2017-04-04 Acclarent, Inc. Devices, systems and methods useable for treating frontal sinusitis
US9649477B2 (en) 2004-04-21 2017-05-16 Acclarent, Inc. Frontal sinus spacer
US9655677B2 (en) 2010-05-12 2017-05-23 Shifamed Holdings, Llc Ablation catheters including a balloon and electrodes
US9700326B2 (en) 2004-04-21 2017-07-11 Acclarent, Inc. Shapeable guide catheters and related methods
US9750401B2 (en) 2008-07-30 2017-09-05 Acclarent, Inc. Paranasal ostium finder devices and methods
US9795442B2 (en) 2008-11-11 2017-10-24 Shifamed Holdings, Llc Ablation catheters
US9820688B2 (en) 2006-09-15 2017-11-21 Acclarent, Inc. Sinus illumination lightwire device
US9826999B2 (en) 2004-04-21 2017-11-28 Acclarent, Inc. Methods and apparatus for treating disorders of the ear nose and throat
US10098652B2 (en) 2004-04-21 2018-10-16 Acclarent, Inc. Systems and methods for transnasal dilation of passageways in the ear, nose or throat
US10098694B2 (en) 2013-04-08 2018-10-16 Apama Medical, Inc. Tissue ablation and monitoring thereof
US10124154B2 (en) 2005-06-10 2018-11-13 Acclarent, Inc. Catheters with non-removable guide members useable for treatment of sinusitis
US10137285B2 (en) 2015-04-22 2018-11-27 Acclarent, Inc. Balloon dilation system with malleable internal guide
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US10631756B2 (en) 2004-04-21 2020-04-28 Acclarent, Inc. Guidewires for performing image guided procedures
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US10874838B2 (en) 2004-04-21 2020-12-29 Acclarent, Inc. Systems and methods for transnasal dilation of passageways in the ear, nose or throat
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US11696716B2 (en) 2008-12-29 2023-07-11 St. Jude Medical, Atrial Fibrillation Division, Inc. Non-contact electrode basket catheters with irrigation
US11707229B2 (en) 2015-05-08 2023-07-25 St Jude Medical International Holding S.À R.L. Integrated sensors for medical devices and method of making integrated sensors for medical devices
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US11844910B2 (en) 2014-06-05 2023-12-19 St. Jude Medical, Cardiology Division, Inc. Deflectable catheter shaft section
US11896284B2 (en) 2007-12-28 2024-02-13 St. Jude Medical, Atrial Fibrillation Division, Inc System and method for measurement of an impedance using a catheter such as an ablation catheter
US11918762B2 (en) 2018-10-03 2024-03-05 St. Jude Medical, Cardiology Division, Inc. Reduced actuation force electrophysiology catheter handle
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US12036027B2 (en) 2016-10-28 2024-07-16 St. Jude Medical, Cardiology Division, Inc. Flexible high-density mapping catheter
US12048545B2 (en) 2014-10-27 2024-07-30 St. Jude Medical, Cardiology Division, Inc. Apparatus and method for connecting elements in medical devices
US12076079B2 (en) 2016-05-03 2024-09-03 St. Jude Medical, Cardiology Division, Inc. Irrigated high density electrode catheter
US12082936B2 (en) 2018-09-27 2024-09-10 St. Jude Medical, Cardiology Division, Inc. Uniform mapping balloon
US12121357B2 (en) 2015-10-21 2024-10-22 St. Jude Medical, Cardiology Division, Inc. High density electrode mapping catheter
US12156979B2 (en) 2018-05-21 2024-12-03 St. Jude Medical, Cardiology Division, Inc. Deflectable catheter shaft with pullwire anchor feature
US12263338B2 (en) 2013-01-16 2025-04-01 St. Jude Medical, Cardiology Division, Inc. Flexible high-density mapping catheter tips and flexible ablation catheter tips with onboard high-density mapping electrodes
US12263014B2 (en) 2020-08-18 2025-04-01 St. Jude Medical, Cardiology Division, Inc. High-density electrode catheters with magnetic position tracking
US12295649B2 (en) 2010-12-02 2025-05-13 St. Jude Medical, Atrial Fibrillation Division, Inc. Catheter electrode assemblies and methods of construction thereof
US12376901B2 (en) 2018-05-21 2025-08-05 St. Jude Medical, Cardiology Division, Inc. Radio-frequency ablation and direct current electroporation catheters
US12383333B2 (en) 2015-01-28 2025-08-12 St. Jude Medical, Cardiology Division, Inc. Thermal mapping catheter

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