St. Jude Medical, Cardiology Division, Inc.

Scimed Life Systems, Inc.

Boston Scientific Scimed, Inc.

St. Jude Medical International Holding S.a.r.l.

Gregory K Olson

Troy Terrance Tegg

Thomas J Holman

Louis G Ellis

Scott M Hanson

Richard J Traxler

Derek C Sutermeister

Jeffrey A Schweitzer

Linda R Lorentzen Cornelius

Brian M Monahan

Timothy S Marass

Travis Dahlen

Tracee E J Eidenschink

Andrew R Oliverius

Terry Sterrett

Nicholas Strom

Sonja J K Williams

John J Crow

Eric Lim

Dale Eric Just

Edward E Parsonage

Don Curtis Deno

Rishi Manda

Linda Lorentzen Cornelius

Tracee E Eidenschink

Hong Cao

Todd Allen Berg

Eric Jon Voth

Timothy G Curran

Russell David Terwey

Loell Boyce Moon

Jeff A Schweitzer

Therese Claire Gilbert

Ryan Kenneth Buesseler

Michael C Bednarek

Israel A Byrd

Daniel Joe Potter

Frederik H Wittkampf

Zachary L Helgeson

Jeffrey Michael Fish

Ryan Albu

David J Kim

John E Arnold, Jr

Bruce W Ebner

Claude Rickerd

René Van Es

Ed Parsonage

Linda R Lorentzen-Cornelius

Vladislav Dmidrievich Popov

Sonja J Williams

Philip J Ebeling

Frederik H M Wittkampf

Simon Pranaitis

Chelsea Spencer

Andreas Ornberg

Terry L Sterrett

Dale R Just

Jin W Park

Ryan M Albu

David Kim

Elongate medical devices with an expandable structure including elongated splines and a distal hub. An elongate medical device includes a handle including a control mechanism, a catheter shaft, an expandable structure including elongated splines and a distal hub, wherein each of the elongated splines includes a shape memory material and an interactive element, wherein each of the elongated splines includes a respective spline proximal end and a spline distal end, wherein each of the spline proximal ends is connected to the catheter shaft distal end, and wherein each of the spline distal ends is connected to the distal hub, and a deflection control member connected to the distal hub, wherein the control mechanism is drivingly coupled to the distal hub via the deflection control member and operable to selectively vary a position of the distal hub relative to the catheter shaft distal end to selectively vary an amount of expansion of the expandable structure, wherein a shape of the expandable structure is produced via a combination of the shape memory material and the position of the distal hub relative to the catheter distal end.

Controllable expandable catheter

High density catheter tip

Various embodiments of the present disclosure can include a high-density electrode catheter. In some embodiments, the high-density electrode catheter can include a catheter shaft including a proximal end and a distal end, the catheter shaft defining a catheter shaft longitudinal axis. In some embodiments, the high-density electrode catheter can include a shaft magnetic position sensor disposed along a distal portion of the catheter shaft. In some embodiments, the high-density electrode catheter can include a flexible tip portion located adjacent to the distal end of the catheter shaft, wherein the flexible tip portion includes a flexible framework. In some embodiments, the high-density electrode catheter can include a plurality of electrodes disposed on the flexible framework. In some embodiments, the high-density electrode catheter can include a tip magnetic position sensor disposed on a portion of the flexible framework.

High-density electrode catheters with magnetic position tracking

The instant disclosure relates to electrophysiology catheters for tissue ablation within a cardiac muscle. In particular, the instant disclosure relates to an electrophysiology catheter that conforms to a shape of a pulmonary vein receiving ablation therapy for a cardiac arrhythmia and produces a consistent tissue ablation line along a length and circumference of the pulmonary venous tissue.

Pulmonary vein isolation balloon catheter

A partially-masked electrode includes a conductive material and an insulated coating having an outer surface. The insulated coating defines a contoured opening that exposes or reveals an area of the conductive material, wherein the contoured opening has an upper perimeter at the outer surface of the insulated coating. When the upper perimeter of the insulated surface coating is placed in contact with a tissue of interest, wherein the tissue of interest is proximate a blood pool, the insulated coating creates a seal between the blood pool and the contoured opening so that no blood in the blood pool can contact the conductive material. This seal reduces or eliminates the reception of far field effects in the blood pool by the electrode, making it easier to locate and diagnose unhealthy tissue.

Masked ring electrodes

A modular multi-electrode structure for use with an electrophysiology device includes a plurality of interconnected, non-conductive, tubular substrates. Each non-conductive, tubular substrate includes an outer surface and a conductor disposed on the outer surface, as well as at least one signal conductor extending along a length of the interconnected plurality of non-conductive tubular substrates. The conductor disposed on the outer surface of each non-conductive tubular substrate is in electrical communication with the at least one signal conductor. In some embodiments, the plurality of non-conductive tubular substrates includes a plurality of non-conductive polymeric substrates. In alternative embodiments, the plurality of non-conductive tubular substrates includes a plurality of non-conductive, unitary molded cylinders.

Electrophysiology catheter with modular electrode structure

A catheter including a catheter shaft and a mapping balloon configured for navigation within a body. The mapping balloon can be coupled to the catheter shaft, such as at a distal end of the catheter shaft. The mapping balloon can have an exterior surface including a plurality of predefined fold locations configured to allow the mapping balloon to be adjusted between a collapsed configuration and an expanded configuration. In the collapsed configuration, the mapping balloon can include a first dimension, and in the expanded configuration the mapping balloon can have a second dimension. The second dimension can be greater than the first dimension. A plurality of electrodes can be located along the exterior surface of the mapping balloon to communicate electrical signals with an electronic control unit.

Uniform mapping balloon

The present disclosure provides electroporation systems and methods of preconditioning tissue for electroporation therapy. An electroporation generator includes an electroporation circuit, a preconditioning circuit, and a controller. The electroporation circuit is configured to be coupled to a catheter for delivering the electroporation therapy to target tissue of the patient. The electroporation circuit is further configured to transmit an electroporation signal through the catheter. The preconditioning circuit is configured to be coupled to a preconditioning electrode for stimulating skeletal muscle tissue of the patient. The preconditioning circuit is further configured to transmit a preconditioning signal to the preconditioning electrode. The controller is coupled to the electroporation circuit and the preconditioning circuit, and is configured to synchronize transmissions of the electroporation signal and the preconditioning signal such that the preconditioning signal is transmitted prior to transmission of the electroporation signal.

Electroporation system and method of preconditioning tissue for electroporation therapy

A medical device includes a body and at least one electrode disposed thereon. The electrode includes a metallic substrate, such as a platinum group metal, an alloy of platinum group metals, or gold. The surface of the substrate is modified in a manner that increases its effective surface area without inducing bulk heating. For example, the surface of the substrate can be laser textured and/or coated, such as with titanium nitride or iridium oxide.

Electrophysiology device with electrodes having increased surface area

Aspects of the present disclosure are directed to flexible high-density mapping catheters with a planar array of high-density mapping electrodes near a distal tip portion. These mapping catheters may be used to detect electrophysiological characteristics of tissue in contact with the electrodes, and may be used to diagnose cardiac conditions, such as cardiac arrhythmias for example.

Flexible high-density mapping catheter

Medical devices and systems including electrical traces are provided. The medical device includes a sheath body () including an inner wall, an outer wall, and a central major lumen () extending through the sheath body () along a longitudinal axis. The central major lumen is defined by the inner wall. The medical device further includes at least one outer lumen () extending through said sheath body, wherein the at least one outer lumen () is disposed between the inner wall and the outer wall, at least one electrode () coupled to a distal portion of said sheath body (), and at least one electrical trace (). Each of the at least one electrodes () is coupled to at least one electrical trace (), and the electrical trace () is disposed between the inner wall and the outer wall.

Sheath visualization

An elongate medical device comprising an expandable structure with an expandable configuration and a collapsed configuration, a handle, operably coupled to the expandable structure, the handle further including a selective movement limiter; and a deflection control member coupled with the distal hub, where the deflection control member is configured to adjust a stiffness of the expandable structure, from a first stiffness to a second stiffness, and maintain the first stiffness or the second stiffness when the selective movement limiter couples with the deflection control member and limits a longitudinal movement of the deflection control member, and wherein the deflection control member is configured to move freely when the selective movement limiter is not coupled with the deflection control member.

The present disclosure provides electroporation systems, methods of controlling electroporation systems to limit electroporation arcs through intracardiac catheters, and catheters for electroporation systems. One method of controlling an electroporation system including a direct current (DC) energy source, a return electrode connected to the DC energy source, and a catheter connected to the DC energy source is disclosed. The catheter has a at least one catheter electrode. The method includes positioning the return electrode near a target location within a body and positioning the catheter electrode adjacent the target location within the body. A system impedance is determined with the return electrode positioned near the target location and the catheter electrode positioned within the body. The system impedance is adjusted to a target impedance to arcing from the catheter electrode.

Electroporation systems and catheters for electroporation systems

An apparatus for cooling tissue or a fluid for an elongate medical device comprising an elongate shaft extending along a longitudinal axis and comprising a shaft proximal end and a shaft distal end; a support structure located at the shaft distal end, where the support structure is expandable from a contracted state to an expanded state, and a plurality of thermoelectric elements, wherein the thermoelectric elements are located on the support structure. A medical device comprising a first catheter end shape, a second catheter end shape located distally with respect to the first catheter end shape, a support structure that extends between the first and the second catheter end shape, and a plurality of thermoelectric elements. A system for cooling a tissue or a fluid for an elongate medical device, comprising a plurality of thermoelectric elements, a thermocouple, an electronic control unit (ECU).

Apparatuses and methods for cooling tissue or fluid

Growing community of inventors

Elk River, MN, United States of America

Gregory K Olson