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公开(公告)号:US11986409B2
公开(公告)日:2024-05-21
申请号:US17569193
申请日:2022-01-05
发明人: David Miller , Ruey-Feng Peh , Vahid Saadat
CPC分类号: A61F2/958 , A61B1/00089 , A61B1/044 , A61B1/12 , A61B34/20 , A61F2002/821 , A61F2250/0039
摘要: A system includes a deployment catheter having a lumen, a delivery sheath configured for positioning within the lumen of the deployment catheter, and a first measurement instrument configured for positioning within the delivery sheath. The first measurement instrument includes a plurality of expandable members each having a known diameter in an expanded state. The first measurement instrument is configured to determine a diameter of an anatomical lumen based on the known diameter of a most proximal expandable member that fits within the anatomical lumen.
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公开(公告)号:US20240032776A1
公开(公告)日:2024-02-01
申请号:US18462175
申请日:2023-09-06
发明人: Ruey-Feng Peh , Vahid Saadat , Edmund A. Tam
CPC分类号: A61B1/00082 , A61B90/36 , A61B34/20 , A61B1/00085 , A61B1/00089 , A61B1/005 , A61B1/015 , A61B1/018 , A61B1/04 , A61B5/02007 , A61B1/00097 , A61B2034/2068 , A61B2034/301
摘要: Precision control systems for tissue visualization and manipulation assemblies are described herein where such devices may utilize a variety of apparatus and methods for facilitating advancement, articulation, control, navigation, etc. of systems which may be used to visual and/or treat tissue regions. Additionally, methods and devices for enhancing navigation of the device through a patient body are also described.
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公开(公告)号:US11559188B2
公开(公告)日:2023-01-24
申请号:US16902915
申请日:2020-06-16
发明人: Vahid Saadat , Ruey-Feng Peh , Chris A. Rothe , Edmund Tam
摘要: A system for visualizing a tissue region of interest comprises a deployment catheter defining a lumen and a hood coupled to and extending distally from the deployment catheter. The hood has a low-profile configuration within a delivery sheath and a deployed configuration when extended distally of the delivery sheath. The hood in the deployed configuration defines an open area in fluid communication with the lumen. A distal portion of the deployment catheter extends into the open area. An imaging element is coupled to an imager support member. When in the deployed configuration, the imaging element is configured to extend distally of the distal portion while the imager support member extends within the deployment catheter. The imaging element comprises a tapered surface and the deployment catheter comprises a complementary tapered surface. Retraction of the imaging element causes the imaging element to shift radially outward from a longitudinal axis.
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公开(公告)号:US11478152B2
公开(公告)日:2022-10-25
申请号:US16384541
申请日:2019-04-15
发明人: Vahid Saadat , Ruey-Feng Peh , Edmund A. Tam
IPC分类号: A61B5/00 , A61B17/34 , A61B1/00 , A61B1/005 , A61B1/015 , A61B1/018 , A61B1/04 , A61B5/02 , A61B90/00 , A61B34/20 , A61B17/12 , A61M5/00 , A61B5/287 , A61B17/22 , A61B17/04 , A61B17/00 , A61B18/02 , A61B17/221 , A61B8/00 , A61B8/12 , A61B18/00 , A61B34/30 , A61B90/30 , A61B34/10
摘要: Electrophysiology mapping and visualization systems are described herein where such devices may be used to visualize tissue regions as well as map the electrophysiological activity of the tissue. Such a system may include a deployment catheter and an attached hood deployable into an expanded configuration. In use, the imaging hood is placed against or adjacent to a region of tissue to be imaged in a body lumen that is normally filled with an opaque bodily fluid such as blood. A translucent or transparent fluid, such as saline, can be pumped into the imaging hood until the fluid displaces any blood, thereby leaving a clear region of tissue to be imaged via an imaging element in the deployment catheter. A position of the catheter and/or hood may be tracked and the hood may also be used to detect the electrophysiological activity of the visualized tissue for mapping.
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公开(公告)号:US20220280022A1
公开(公告)日:2022-09-08
申请号:US17738947
申请日:2022-05-06
发明人: Christopher A. ROTHE , Juan Diego Perea , David Miller , Vahid Saadat , Zachary J. Malchano , Ruey-Feng Peh
摘要: A medical manipulation assembly includes a catheter and distal and proximal steering mechanisms. The catheter includes distal and proximal steerable portions with working channels configured to receive an instrument. The distal steering mechanism is operable to bend the distal steerable portion in a first plane relative to the proximal steerable portion in response to movement of a first portion of the distal steering mechanism about a first axis of rotation and to bend the distal steerable portion in a second plane relative to the proximal steerable portion in response to movement of a second portion of the distal steering mechanism about a second axis of rotation. The proximal steering mechanism is operable to bend the proximal steerable portion by rotational movement of the proximal steering mechanism. Distal pullwires extend between the distal steerable portion and steering mechanism and proximal pullwires extend between the proximal steerable portion and steering mechanism.
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公开(公告)号:US11241325B2
公开(公告)日:2022-02-08
申请号:US16359447
申请日:2019-03-20
发明人: David Miller , Ruey-Feng Peh , Vahid Saadat
摘要: A tissue manipulation system comprises a reconfigurable hood structure. The hood structure is asymmetric and has a low profile delivery configuration and an expanded deployed configuration which defines an open area bounded at least in part by the hood structure and by an interface surface extending across the hood structure distal end and configured to engage against a tissue region. The open area is in fluid communication with an environment external to the hood structure. The system also includes a catheter in communication with the open area such that introduction of a fluid through the catheter purges the open area of bodily fluid. The interface surface is slanted relative to the catheter longitudinal axis when the hood structure is fully expanded in the expanded deployed configuration. The system also includes an imaging element positioned on the hood structure such that the open area is visualized through the fluid.
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公开(公告)号:US10441136B2
公开(公告)日:2019-10-15
申请号:US15044667
申请日:2016-02-16
发明人: Vahid Saadat , Ruey-Feng Peh , Chris A. Rothe , Edmund Tam
摘要: A method of treatment comprises intravascularly securing an anchor extending from an anchor member at least partially within a vessel lumen such that blood flows unobstructed through or past the anchor. While the anchor is secured, a distance of the anchor member, between the anchor and a barrier or membrane projecting distally from a deployment catheter, is adjusted such that an open area defined by the barrier or membrane is placed against or adjacent to a portion of a patient tissue. Adjusting the distance of the anchor member comprises moving the deployment catheter distally with respect to the anchor member. The method also comprises displacing blood with a transparent fluid from the open area, and while the anchor is secured, articulating the barrier or membrane circumferentially around the anchor. The method also includes treating the tissue while visualizing through the transparent fluid.
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公开(公告)号:US10278588B2
公开(公告)日:2019-05-07
申请号:US14565742
申请日:2014-12-10
发明人: Vahid Saadat , Ruey-Feng Peh , Edmund A. Tam
IPC分类号: A61B5/00 , A61B1/00 , A61B1/005 , A61B1/015 , A61B1/018 , A61B1/04 , A61B5/02 , A61B5/042 , A61B17/12 , A61B17/34 , A61M5/00 , A61B90/00 , A61B34/20 , A61B8/12 , A61B8/00 , A61B17/04 , A61B17/221 , A61B18/02 , A61B17/00 , A61B17/22 , A61B18/00 , A61B34/30 , A61B90/30 , A61B34/10
摘要: A system comprises a catheter and an electromagnetic sensor assembly supported at a distal end of the catheter. The electromagnetic sensor assembly includes a magnetic strut spirally extended away from the distal end of the catheter around an open area distal of the catheter. The system also comprises an imaging element supported at a distal end of the catheter inside the open area. The imaging element acquires an image of the tissue surface region. The system also comprises a processor that receives a position of the electromagnetic sensor assembly and the tissue surface image. The processor maps the position of the electromagnetic sensor assembly and tissue surface image together. The system also comprises a barrier reconfigurable from a low-profile shape to an expanded deployment shape projecting from a distal end of the catheter. The electromagnetic sensor assembly is spirally configured over the barrier.
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公开(公告)号:US20150025614A1
公开(公告)日:2015-01-22
申请号:US14490107
申请日:2014-09-18
发明人: David Miller , Vahid Saadat , Ruey-Feng Peh
CPC分类号: A61F2/958 , A61B1/00089 , A61B1/04 , A61B1/12 , A61B34/20 , A61F2002/821 , A61F2250/0039
摘要: Stent delivery under direct visualization utilizing an imaging hood is described herein. A stent may be delivered and placed in or around lesions, e.g., ostial lesions, through a delivery catheter while being directly visualized via an imaging hood. A pre-delivery assessment probe may also be advanced to the desired site for accurate placement of the stent.
摘要翻译: 本文描述了使用成像罩的直接可视化下的支架输送。 支架可以通过输送导管递送并放置在病变部位或周围,例如口腔损伤,同时通过成像罩直接观察。 预交付评估探针也可以推进到所需位置以准确地放置支架。
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公开(公告)号:US20140316406A1
公开(公告)日:2014-10-23
申请号:US14226151
申请日:2014-03-26
发明人: N. Parker WILLIS , Zachary J. Malchano , Chris A. Rothe , Vahid Saadat , Ruey-Feng Peh , David Miller , Edmond Tam
IPC分类号: A61B18/14
CPC分类号: A61B18/1492 , A61B1/00089 , A61B1/012 , A61B2017/00106 , A61B2018/00214 , A61B2018/00577 , A61B2018/00642 , A61B2018/00809 , A61B2018/00839 , A61B2018/1472 , A61B2218/002
摘要: A method of ablating a tissue region within a blood-filled environment comprises restraining a fluid within a visualization field in a portion of the blood-filled environment and visualizing the tissue region through the fluid within the visualization field. The method also includes transmitting ablating electrical energy from the fluid into the visualized tissue region.
摘要翻译: 在充满血液的环境中消融组织区域的方法包括在充满血液的环境的一部分中的可视化区域内限制流体,并通过可视化区域内的流体显现组织区域。 该方法还包括将消融的电能从流体传送到可视化组织区域。
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