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公开(公告)号：US11871986B2
公开(公告)日：2024-01-16
申请号：US17379801
申请日：2021-07-19
Inventor： Huisun Wang , Sacha C. Hall
CPC classification number: A61B18/1492 , A61B2018/00035 , A61B2018/00101 , A61B2018/00791 , A61B2018/1472
Abstract: The invention relates to ablation catheter electrodes that solve in part the problem of tissue charring during radiofrequency ablation. The electrode assemblies of the invention include passageways that lead from the inner lumen of the assemblies to the surface of the assemblies, wherein the passageways have a smooth conjunction with the outer surface. These smooth conjunctions comprise rounded edges or are chamfered. In the case of rounded edges, the rounded edges can have fixed radii of about 0.002″ to about 0.008″.
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公开(公告)号：US11723725B2
公开(公告)日：2023-08-15
申请号：US17166868
申请日：2021-02-03
Inventor： Daniel J. Potter , Lev A. Koyrakh
CPC classification number: A61B34/20 , A61B5/062 , A61B5/063 , A61B5/065 , A61B18/1492 , A61M25/0105 , A61B5/066 , A61B2017/00243 , A61B2018/00023 , A61B2018/00351 , A61B2018/00577 , A61B2018/00892 , A61B2018/00988 , A61B2034/2051 , A61B2034/2053 , A61B2090/061 , A61B2090/0811 , A61B2562/0257 , A61M25/0097 , A61M25/0147 , A61M2025/0166
Abstract: Systems for detecting when catheter electrodes enter into and exit from 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：US11717356B2
公开(公告)日：2023-08-08
申请号：US16540944
申请日：2019-08-14
Inventor： Atila Amiri , Kulbir S. Sandhu , Betty Mark , Mark B. Kirschenman
IPC: A61B34/30 , A61B34/37 , A61B34/00 , A61B34/20 , A61B90/00 , A61B18/00 , A61M25/01 , A61B18/14 , A61B17/00
CPC classification number: A61B34/30 , A61B34/37 , A61B34/71 , A61B34/76 , A61B34/77 , A61B90/06 , A61M25/0113 , A61M25/0147 , A61B18/1492 , A61B34/20 , A61B2017/00026 , A61B2017/00477 , A61B2018/00351 , A61B2018/00577 , A61B2018/00642 , A61B2034/2055 , A61B2034/301 , A61B2034/305 , A61B2034/741 , A61B2034/742 , A61B2090/064
Abstract: An obstruction detection system for a robotic catheter system including a robotic catheter manipulator assembly including one or more catheter manipulation bases and one or more sheath manipulation bases. Each manipulation base may be generally linearly movable on one or more tracks relative to the robotic catheter manipulator assembly. The obstruction detection system may include one or more obstruction detection sensors disposed on the track or on the manipulation bases to detect an obstruction along a path of motion of one or more manipulation bases. A software system may be provided for monitoring movement of the catheter and sheath manipulation bases, and/or a status of the obstruction detection sensors.
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公开(公告)号：US11642060B2
公开(公告)日：2023-05-09
申请号：US16450453
申请日：2019-06-24
Inventor： John A. Hauck
CPC classification number: A61B5/24 , A61B5/0538 , A61B5/063 , A61B5/6843 , A61B5/6857 , A61B5/6885 , A61B18/1492 , A61B90/06 , A61B2018/00577 , A61B2018/00875 , A61B2090/065
Abstract: A system and method for assessing contact between a medical device and tissue may comprise an electronic control unit (ECU) configured to be coupled to a medical device, the medical device comprising a first electrode and a second electrode. The ECU may be further configured to select the first electrode as an electrical source and the second electrode as an electrical sink, to cause an electrical signal to be driven between the source and sink, to detect respective electric potentials on the first electrode and the second electrode while the electrical signal is driven, and to determine an impedance respective of one of the first electrode and the second electrode according to both of the respective electric potentials.
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公开(公告)号：US11596765B2
公开(公告)日：2023-03-07
申请号：US16288710
申请日：2019-02-28
Inventor： Martin Maitre Grasse , James V. Kauphusman
IPC: A61M25/00 , B29C48/10 , B29C48/21 , B29C48/00 , A61B18/14 , A61L29/04 , A61M25/01 , F16L11/22 , B29D23/00 , A61B18/18 , B29C49/04 , B29K27/18 , B29L31/00 , A61B18/00
Abstract: A method of manufacturing a catheter shaft includes extruding an inner polymeric layer having a main lumen and two or more side lumens spaced about the main lumen; forming an outer polymeric layer about the inner polymeric layer; and inserting at least one elongate member, such as a wire, through each side lumen of the inner polymeric layer. The side lumens are less than about ⅕ the size of the main lumen. The method may further include the step of forming a braided layer between the inner polymeric layer and the outer polymeric layer. In an alternate embodiment, the method includes co-extruding an inner polymeric layer and a multi-lumen layer, the multi-lumen layer having two or more side lumens; forming an outer polymeric layer about the multi-lumen layer; and inserting at least one elongate member through each side lumen. Catheter assemblies made according to the described methods are also disclosed.
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Patent Agency Ranking
公开(公告)号：US20230000546A1
公开(公告)日：2023-01-05
申请号：US17842777
申请日：2022-06-16
Inventor： Steven C. Christian , Reed R. Heimbecher
IPC: A61B18/14
Abstract: Ablation electrode assemblies include an inner core member and an outer shell surrounding the inner core member. The inner core member and the outer shell define a space or separation region therebetween. The inner core member is constructed from a thermally insulative material having a reduced thermal conductivity. In an embodiment, the space is a sealed or evacuated region. In other embodiments, irrigation fluid flows within the space. The ablation electrode assembly further includes at least one thermal sensor in some embodiments. Methods for providing irrigation fluid during cardiac ablation of targeted tissue are disclosed that include calculating the energy delivered to irrigation fluid as it flows within the ablation electrode assembly through temperature measurement of the irrigation fluid. Pulsatile flow of irrigation fluid can be utilized in some embodiments of the disclosure.
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公开(公告)号：US20220387101A1
公开(公告)日：2022-12-08
申请号：US17723365
申请日：2022-04-18
Inventor： Eric S. Olson , James V. Kauphusman , Linda K. Nemec , Troy T. Tegg
Abstract: A medical device is provided comprising a shaft comprising a first segment and a second segment. The first segment is configured to buckle upon application of a first critical force. The second segment includes an outer surface and an inner surface and is configured to buckle upon application of a second critical force. The second critical force is lower than the first critical force. The medical device further comprises a coil disposed radially inwardly of the inner surface of the second segment.
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公开(公告)号：US11376397B2
公开(公告)日：2022-07-05
申请号：US16661145
申请日：2019-10-23
Inventor： Troy T. Tegg , Richard E. Stehr , Alan M. Fuentes , Linda Kay Nemec
Abstract: A method of manufacturing a catheter assembly generally includes providing a catheter shaft having an outer layer and an inner reinforcing layer; removing at least a portion of the outer layer from a length of the distal end of the catheter shaft in order to expose a distal segment thereof; providing an inner jacket segment; axially engaging the inner jacket segment with an interior surface of the distal segment of the catheter shaft; providing an outer jacket segment around at least the exposed exterior region of the distal segment of the catheter shaft; and bonding the distal segment of the catheter shaft to the inner jacket segment and the outer jacket segment.
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公开(公告)号：US11337750B2
公开(公告)日：2022-05-24
申请号：US16224172
申请日：2018-12-18
Inventor： Carlo Pappone , Alan de la Rama , Peter C. Chen , Cary Hata , Jared A. Shimizu
Abstract: A flexible tip electrode for an ablation catheter is disclosed. The catheter includes a catheter body and a hollow elongate tip electrode disposed at a distal end of the catheter body. The electrode includes a sidewall provided with one or more elongate gaps extending therethrough. The one or more elongate gaps providing flexibility in the sidewall for bending movement of the tip electrode relative to a longitudinal axis of the catheter body.
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公开(公告)号：US11317967B2
公开(公告)日：2022-05-03
申请号：US16192918
申请日：2018-11-16
Inventor： Kirk Kochin Wu , Yongxing Zhang
Abstract: Magnetic guided ablation catheters and methods of manufacture are disclosed. In an exemplary embodiment, a catheter includes a unitary flexible tubing having a proximal end and a distal end. A plurality of magnets are positioned along an axis of the unitary flexible tubing, the plurality of magnets provided within the unitary flexible tubing. During operation, the plurality of magnets are responsive to an external magnetic field to selectively position and guide the catheter within a body of a patient.
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