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公开(公告)号：US09808180B2
公开(公告)日：2017-11-07
申请号：US14247537
申请日：2014-04-08
CPC classification number: A61B5/068 , A61B5/06 , A61B5/062 , A61B5/6869 , A61B8/12 , A61B34/20 , A61B2017/003 , A61B2017/00336 , A61B2034/2051 , A61B2034/2053 , A61B2562/0209 , A61B2562/043 , A61B2562/046 , A61M25/00 , A61M25/0105 , A61M25/0133
Abstract: 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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232.发明授权公开(公告)号：US09808171B2
公开(公告)日：2017-11-07
申请号：US14782134
申请日：2014-05-07
Inventor： Ram K. Balachandran , D. Curtis Deno
IPC: A61B5/04 , A61B5/042 , A61B5/0452 , A61B5/06 , A61B18/14 , A61B5/00 , A61B17/00 , A61B18/00 , A61B34/20
CPC classification number: A61B5/0422 , A61B5/0452 , A61B5/061 , A61B5/062 , A61B5/7203 , A61B5/7239 , A61B18/1492 , A61B34/20 , A61B2017/00039 , A61B2017/00044 , A61B2017/00053 , A61B2018/00577 , A61B2018/00839 , A61B2034/2051 , A61B2034/2053 , A61B2218/002
Abstract: A system and method are provided for determining electrophysiological data. The system comprises an electronic control unit that is configured to receive electrical signals from a set of electrodes, receive position and orientation data for the set of electrodes from a mapping system, compensate for position and orientation artifacts of the set of electrodes, compose cliques of a subset of neighboring electrodes in the set of electrodes, determine catheter orientation independent information of a target tissue, and output the orientation independent information to a display. The method comprising receiving electrogram data for a set of electrodes (80), compensating for artifacts in sensor positions in the mapping system (81), resolving the bipolar signals into a 3D vector electrogram in the mapping system coordinates (82), manipulating observed unipolar voltage signals and the tangent component of the e-field to estimate the conduction velocity vector (83), and outputting the catheter orientation independent information (84).
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233.发明申请公开(公告)号：US20170312396A1
公开(公告)日：2017-11-02
申请号：US15594165
申请日：2017-05-12
Inventor： Xiaoping Guo , Richard E. Stehr
IPC: A61L29/04
CPC classification number: A61L29/049 , A61M25/00 , A61M25/0021 , A61M2025/0048 , A61M2025/006 , A61M2025/0062 , C08L83/04
Abstract: The invention comprises self-lubricating polymer compositions that are especially useful in medical devices and valves and gaskets of medical devices. In a preferred embodiment, the polymer compositions comprise a thermosetting or thermoplastic silicone elastomer in combination with a lubricity enhancing polyfluoropolyether fluid or hydrocarbon-based synthetic oil. In other preferred embodiments, the polymer compositions contain only biocompatible components. The improved anti-friction properties of the self-lubricating polymers can be demonstrated over a course of insertion and withdrawal cycles, where conventional polymers have changing and mostly increasing force required for each insertion and withdrawal, while the polymer compositions of the invention remain stable.
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234.发明授权公开(公告)号：US09806627B2
公开(公告)日：2017-10-31
申请号：US14319385
申请日：2014-06-30
Inventor： Ryan M. Albu
CPC classification number: H02M5/458 , A61B18/1206 , A61B18/1233 , A61B2018/00351 , A61B2018/00577 , A61B2018/1286 , H02M7/4807 , H02M2001/007 , H02M2001/008 , Y10T307/344 , Y10T307/406
Abstract: Low leakage current power supply methods, systems, and apparatus are described. In one example, a medical system includes a plurality of medical devices and a power supply configured to provide alternating current (AC) power to the plurality of medical devices. The power supply includes an input configured to receive AC power from an AC power source, an isolated switching power converter coupled to the input to receive the AC power and output AC power, a controller coupled to the isolated switching power converter and configured to control operation of the isolated switching power converter, and an output coupled to the isolated switching power converter to provide the AC power output.
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235.发明申请公开(公告)号：US20170301124A1
公开(公告)日：2017-10-19
申请号：US15640944
申请日：2017-07-03
Inventor： Praveen Dala-Krishna
CPC classification number: G06T13/20 , A61B8/0883 , A61B8/12 , A61B8/4245 , A61B8/445 , A61B8/4483 , A61B8/466 , A61B8/483 , A61B8/543 , G06T7/12 , G06T7/33 , G06T7/80 , G06T15/02 , G06T2200/08 , G06T2207/10068 , G06T2207/10136 , G06T2207/30048
Abstract: 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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Patent Agency Ranking
公开(公告)号：US20170252102A1
公开(公告)日：2017-09-07
申请号：US15465112
申请日：2017-03-21
Inventor： Eric Steven Olson
IPC: A61B18/14
CPC classification number: A61B18/1492 , A61B2018/00577 , A61B2018/00666 , A61B2018/00702 , A61B2018/00791 , A61B2018/00839 , A61B2018/00875 , A61B2090/065
Abstract: A system for controlling delivery of ablation energy by an ablation catheter to tissue in a body is provided. The system includes an electronic control unit configured to determine, responsive to a measurement signal from the ablation catheter, a value for a characteristic associated with the delivery of ablation energy to the tissue. In one embodiment, the characteristic is the degree of contact between the ablation catheter and the tissue. The unit is further configured to generate a control signal, responsive to the determined value of the characteristic, to control an amount of energy delivered from an ablation delivery element on the ablation catheter to the tissue. The amount of energy varies in response to the determined value of the characteristic when the determined value of the characteristic meets a predetermined condition relative to a threshold value for the characteristic.
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公开(公告)号：US20170245914A1
公开(公告)日：2017-08-31
申请号：US15457378
申请日：2017-03-13
Inventor： John A. Hauck
CPC classification number: A61B18/1233 , A61B5/0053 , A61B5/02007 , A61B5/103 , A61B5/441 , A61B5/4519 , A61B5/6852 , A61B5/6885 , A61B18/14 , A61B18/1492 , A61B2034/2051 , A61B2090/062 , A61B2090/064
Abstract: A system and method are provided for assessing the compliance of internal patient tissue for purposes of catheter guidance and/or ablation procedures. Specifically, the system/method provides for probing internal patient tissue in order to obtain force and/or tissue displacement measurements. These measurements are utilized to generate an indication of tissue elasticity. In one exemplary embodiment, the indication of elasticity is correlated with an image of the internal tissue area and an output of this image including elasticity indications is displayed for a user.
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238.发明申请公开(公告)号：US20170202615A1
公开(公告)日：2017-07-20
申请号：US15404844
申请日：2017-01-12
Inventor： Kedar Ravindra Belhe , Saurav Paul
CPC classification number: A61B18/1492 , A61B5/6885 , A61B2018/00083 , A61B2018/00577 , A61B2018/00875 , A61B2018/00988 , A61B2090/064 , A61B2090/065 , A61M25/00 , A61M2025/0002 , G01L1/20
Abstract: A catheter assembly for assessing contact between the catheter assembly and tissue is disclosed. The assembly includes a catheter shaft and a pressure sensitive conductive composite member whose electrical resistance varies with pressure applied to the catheter assembly. The assembly also includes at least one measurement terminal to permit the measurement of changes in the electrical characteristics of the pressure sensitive conductive composite member. The assembly may optionally include a measurement device to measure resistance, impedance and/or other electrical characteristics. The assembly may utilize a reference electrode secured to the patient's tissue, which permits the measurement device to measure changes between the reference electrode and the at least one measurement terminal. Optionally, the assembly may include a conductive outer layer. Also disclosed are sensor assemblies, contact sensor, methods of contact sensing, and methods of manufacturing relating to the use of pressure sensitive conductive composites.
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公开(公告)号：US09693820B2
公开(公告)日：2017-07-04
申请号：US13839963
申请日：2013-03-15
Inventor： Daniel J Potter , Lev A Koyrakh
IPC: A61B5/05 , A61B18/14 , A61M25/01 , A61B5/06 , A61B17/00 , A61B18/00 , A61M25/00 , A61B34/20 , A61B90/00
CPC classification number: A61B34/20 , A61B5/062 , A61B5/063 , A61B5/065 , A61B5/066 , A61B18/1492 , A61B2017/00243 , A61B2018/00023 , A61B2018/00351 , A61B2018/00577 , A61B2018/00892 , A61B2018/00988 , A61B2034/2051 , A61B2034/2053 , A61B2090/061 , A61B2090/0811 , A61B2562/0257 , A61M25/0097 , A61M25/0105 , A61M25/0147 , A61M2025/0166
Abstract: Systems for detecting when catheter electrodes enter and exit an introducer are disclosed. In one form, a system detects a relative position of a catheter (comprising a marker band and an electrode) and an introducer (comprising a proximity sensor adapted to sense the marker band), while the catheter and introducer are in a human body. The system may comprise an electronic control unit to analyze signals from the catheter and/or the introducer, to determine whether the catheter electrode is within the introducer; and to disregard data collected from the electrode when that electrode is in the introducer. The sensor may be on the catheter and the sensed element may be on the introducer. The sensed element may comprise one or several marker bands. A marker band may be applied during the manufacture of a medical device or during its use and is any element capable of electromagnetic detection.
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公开(公告)号：US09687297B2
公开(公告)日：2017-06-27
申请号：US14712694
申请日：2015-05-14
Inventor： Dale E. Just , Troy T. Tegg , Theodore A. Johnson , Sacha C. Hall
CPC classification number: A61B18/1492 , A61B5/0422 , A61B2018/00083 , A61B2018/00267 , A61B2018/00351 , A61B2018/00577 , A61B2018/00875 , A61B2018/1407 , A61B2018/1465 , Y10T29/49204
Abstract: 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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