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公开(公告)号：US11234612B2
公开(公告)日：2022-02-01
申请号：US15724704
申请日：2017-10-04
摘要： A medical device can be localized by providing at least three non-colinear localization elements (e.g., electrodes) thereon. Once placed in a non-ionizing localization field, three adjacent localization elements, at least one of which will typically be a spot electrode, may be selected, and the non-ionizing localization field may be used to measure their locations. A cylinder is defined to fit the measured locations of the selected localization elements. The cylinder is rotationally oriented using the measured location of a spot electrode. Location and rotational attitude information may be used to construct a three-dimensional representation of the medical device within the localization field. The electrodes may be provided on the medical device or on a sheath into which the medical device is inserted. The invention also provides systems and methods for identifying and calibrating deflection planes where the medical device and/or sheath are deflectable.
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2.发明授权公开(公告)号：US11217000B2
公开(公告)日：2022-01-04
申请号：US15640944
申请日：2017-07-03
发明人： Praveen Dala-Krishna
IPC分类号： A61B8/08 , G06T15/02 , G06T7/80 , G06T7/33 , G06T7/12 , G06T7/00 , G06T13/20 , A61B8/12 , A61B8/00
摘要： Methods for processing two-dimensional ultrasound images from an intracardiac ultrasound imaging catheter provide improved image quality and enable generating three-dimensional composite images of the heart. Two-dimensional ultrasound images are obtained and stored in conjunction with correlating information, such as time or an electrocardiogram. Images related to particular conditions or configurations of the heart can be processed in combination to reduce image noise and increase resolution. Images may be processed to recognize structure edges, and the location of structure edges used to generate cartoon rendered images of the structure. Structure locations may be averaged over several images to remove noise, distortions and blurring from movement.
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公开(公告)号：US20210378736A1
公开(公告)日：2021-12-09
申请号：US17349654
申请日：2021-06-16
发明人： Dale E. Just , Troy T. Tegg , Theodore A. Johnson , Sacha C. Hall
摘要： A family of catheter electrode assemblies includes a flexible circuit having a plurality of electrical traces and a substrate; a ring electrode surrounding the flexible circuit and electrically coupled with at least one of the plurality of electrical traces; and an outer covering extending over at least a portion of the electrode. A non-contact electrode mapping catheter includes an outer tubing having a longitudinal axis, a deployment member, and a plurality of splines, at least one of the plurality of splines comprising a flexible circuit including a plurality of electrical traces and a substrate, a ring electrode surrounding the flexible circuit and electrically coupled with at least one of the plurality of electrical traces; and an outer covering extending over at least a portion of the ring electrode. A method of constructing the family of catheter electrode assemblies is also provided.
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公开(公告)号：US11154691B2
公开(公告)日：2021-10-26
申请号：US16401652
申请日：2019-05-02
摘要： The instant invention relates generally to introducer catheters used to help deliver catheters or other medical devices to locations within the human body. In particular, the instant invention relates to large diameter introducer catheters (introducer catheters with lumens greater than about 6 French) having increased strength, flexibility, and kink resistance. Introducer catheters according to the teachings herein may also include curved distal ends and flared (that is, funnel-like) transition sections within their lumens.
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5.发明授权公开(公告)号：US11052227B2
公开(公告)日：2021-07-06
申请号：US16001677
申请日：2018-06-06
发明人： Troy T Tegg
摘要： A deflectable catheter shaft section is disclosed comprising an elongated body extending along a longitudinal axis and comprising a distal end and a proximal end; and a plurality of lumens extending along the longitudinal axis of the elongated body, wherein at least one of the lumens is abutting at least another one of the lumens. A catheter comprising the deflectable catheter shaft section and a method of manufacturing the deflectable catheter shaft section are also disclosed. A catheter incorporating a deflectable catheter shaft section can further comprise first and second compression coils disposed over pull wires located within the catheter, wherein the compression coils are unattached to the catheter or components thereof, but can be constrained by a shaft coupler at a distal end of each of the compression coils and by at least a portion of a handle assembly at a proximal end of each of the compression coils.
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公开(公告)号：US11000684B2
公开(公告)日：2021-05-11
申请号：US15931240
申请日：2020-05-13
发明人： Saurav Paul , Troy T. Tegg , Israel A. Byrd , Riki Thao , Harry A. Puryear , Linda Nemec
摘要： Catheter systems include direction-sensitive, multi-polar tip electrode assemblies for electroporation-mediated therapy, electroporation-induced primary necrosis therapy and electric field-induced apoptosis therapy, including configurations for producing narrow, linear lesions as well as distributed, wide area lesions. A monitoring system for electroporation therapy includes a mechanism for delivering electrochromic dyes to a tissue site as well as a fiber optic arrangement to optically monitor the progress of the therapy as well as to confirm success post-therapy. A fiber optic temperature sensing electrode catheter includes a tip electrode having a cavity whose inner surface is impregnated or coated with thermochromic/thermotropic material that changes color with changes in temperature. An optic fiber/detector arrangement monitors the thermochromic or thermotropic materials, acquiring a light signal and generating an output signal indicative of the spectrum of the light signal. An analyzer determines an electrode temperature based on the detector output and predetermined spectrum versus temperature calibration data.
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公开(公告)号：US10960181B2
公开(公告)日：2021-03-30
申请号：US16046376
申请日：2018-07-26
摘要： An apparatus for imparting a tensile force to deflect a distal portion of a catheter while maintaining its exterior dimensions may include a handle grip including a cross-section of generally predetermined exterior dimensions, and a longitudinal axis. A flexible elongate member may include proximal and distal end portions, with the proximal end portion being coupled to the handle grip. An adjustment knob may include a cross-section of generally predetermined exterior dimensions, and is rotatably coupled to the handle grip around the longitudinal axis. An elongate deflection member may be operably coupled to the adjustment knob and to the distal end portion of the elongate member. Rotation of the adjustment knob may impart a tensile force to the deflection member thereby causing the distal end portion of the elongate member to deflect from a prior configuration while maintaining the generally predetermined exterior dimensions of the handle grip and the adjustment knob.
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公开(公告)号：US10945632B2
公开(公告)日：2021-03-16
申请号：US15412097
申请日：2017-01-23
摘要： A method of detecting dislodgement of a navigational reference for a localization system includes securing a reference catheter, including at least one reference localization element, at an initial reference location within a localization field. The positions of one or more of the reference localization elements are monitored for a perceived displacement that suggests that the reference catheter has become dislodged from the initial reference location (e.g., a displacement above a certain threshold, such as about 4 mm). The direction of this perceived displacement may then be further analyzed (e.g., compared to a predicted or most likely direction of displacement) to determine whether there has been an actual dislodgement of the reference catheter, and, if so, an appropriate signal (e.g., an audible or visual warning) may be generated. Upon dislodgement, guidance may be provided to aid the practitioner in restoring the reference catheter to its initial location.
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9.发明授权公开(公告)号：US10912923B2
公开(公告)日：2021-02-09
申请号：US16152127
申请日：2018-10-04
摘要： A catheter assembly includes an inner liner made of flexible material and an outer layer having a steering mechanism. The steering mechanism includes at least one flat wire and a corresponding lumen through which the flat wire may travel. The steering mechanism may also include at least one pull ring to which the flat wires are attached. A layer of heat shrink material may encompass the outer layer. A braided wire assembly may also be provided in the outer layer, and may be formed by braiding a plurality of flat wires into a wire mesh. The overall cross-section of the catheter assembly is preferably substantially circular. A catheter shaft may include a plurality of segments of differing hardness characteristics. The outer layer typically comprises a melt processing polymer such that the catheter assembly may be laminated using heat.
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公开(公告)号：US20200297239A1
公开(公告)日：2020-09-24
申请号：US16087804
申请日：2017-04-05
发明人： RICHARD J. OLSON
摘要： Systems, apparatuses and methods are provided for identifying the position of a catheter relative to internal tissue and controlling injection of a therapeutic substance(s) into the internal tissue. In one embodiment, a catheter includes one or more position sensing electrodes disposed at or near a distal end of the catheter that allow identifying the position of the catheter relative to the internal tissue. The catheter also includes one or more contact sensors that provide an indication of contact and/or contact forces between the catheter and internal tissue before and after a therapy delivery needle is extended from the catheter into the internal tissue. Outputs of the contact sensor(s) allows for confirming insertion of the therapy delivery needle into the internal tissue to a desired depth. Once inserted to the desired depth, a therapeutic substance may be injected into the internal tissue at the desired depth.
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