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公开(公告)号：US12097340B2
公开(公告)日：2024-09-24
申请号：US17555169
申请日：2021-12-17
CPC分类号： A61M25/0147 , A61B1/0052 , A61B1/0057 , A61M25/0136 , A61B2017/003 , A61B2017/00327 , A61B2018/00369 , A61M25/0053 , A61M2025/015
摘要： A steerable medical apparatus includes a shaft, a steering mechanism, and an actuation mechanism. The shaft has a proximal portion, a distal portion, a first pull wire, and a second pull wire. The distal ends of the first and second pull wires are coupled to the distal portion of the shaft. The steering mechanism has a first wheel and a second wheel coupled by a differential mechanism. The proximal ends of the first and second pull wires are respectively coupled to the first and second wheels. The actuation mechanism is coupled to the steering mechanism. Actuating the actuation mechanism in a first operational mode causes the distal portion of the shaft to curve in a first plane. Actuating the actuation mechanism in a second operational mode causes the distal portion of the shaft to curve away from the first plane.
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2.发明公开公开(公告)号：US20240216126A1
公开(公告)日：2024-07-04
申请号：US18610602
申请日：2024-03-20
发明人： Michael R. Bialas
CPC分类号： A61F2/24 , A61B50/30 , A61F2/2418 , A61F2/2436 , A61M25/10 , A61F2/2433 , A61F2/9517 , A61F2002/9583 , A61F2220/0025 , A61F2220/0075 , A61F2230/0002 , A61F2250/0098
摘要： Methods and systems for rotationally aligning a commissure of a prosthetic heart valve with a commissure of a native valve are disclosed. In some examples, a method can comprise advancing a distal end portion of a delivery apparatus toward a native valve; visualizing under fluoroscopy and for a selected imaging view, a position of a radiopaque marker on the distal end portion relative to a guidewire extending through the delivery apparatus, the marker circumferentially offset from a selected commissure of the radially compressed prosthetic valve by a predetermined amount that is determined based on the selected imaging view; rotating the delivery apparatus until the marker is centered along the guidewire; and advancing the distal end portion into the native valve and inflating the balloon to radially expand and implant the prosthetic valve in the native valve such that the selected commissure is aligned with a commissure of the native valve.
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公开(公告)号：US20220296352A1
公开(公告)日：2022-09-22
申请号：US17654512
申请日：2022-03-11
发明人： Alexander H. Cooper , Michael R. Bialas , David M. Taylor , Gregory Scott Tyler, II , Zachary R. Kowalski , Art Z. Kwan , Darshin S. Patel , Asher L. Metchik , Michael J. Popp , Amanda Kristine Anderson White
摘要： In a particular embodiment, the present disclosure provides a prosthetic valve delivery assembly that includes a storage tube and a nose cone cap. A prosthetic valve having a frame is at least partially disposed within the storage tube. A nose cone is disposed about an elongated shaft. The nose cone cap and the storage tube have mating first and second locking member that can be coupled to selectively secure the nose cone cap to the storage tube.
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公开(公告)号：US11207499B2
公开(公告)日：2021-12-28
申请号：US16159966
申请日：2018-10-15
摘要： A steerable medical apparatus includes a shaft, a steering mechanism, and an actuation mechanism. The shaft has a proximal portion, a distal portion, a first pull wire, and a second pull wire. The distal ends of the first and second pull wires are coupled to the distal portion of the shaft. The steering mechanism has a first wheel and a second wheel coupled by a differential mechanism. The proximal ends of the first and second pull wires are respectively coupled to the first and second wheels. The actuation mechanism is coupled to the steering mechanism. Actuating the actuation mechanism in a first operational mode causes the distal portion of the shaft to curve in a first plane. Actuating the actuation mechanism in a second operational mode causes the distal portion of the shaft to curve away from the first plane.
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公开(公告)号：US20170156839A1
公开(公告)日：2017-06-08
申请号：US15364670
申请日：2016-11-30
发明人： Alexander H. Cooper , Michael R. Bialas , David M. Taylor , Gregory Scott Tyler, II , Zachary R. Kowalski , Art Z. Kwan , Darshin S. Patel , Asher L. Metchik , Michael J. Popp , Amanda K. Anderson
CPC分类号： A61F2/0095 , A61F2/2412 , A61F2/2415 , A61F2/2418 , A61F2/2433 , A61F2/2436 , A61F2/2439 , A61F2002/9517
摘要： In a particular embodiment, the present disclosure provides a prosthetic valve delivery assembly that includes a storage tube. A prosthetic valve having a frame is at least partially disposed within the storage tube. A nose cone is located distally to the valve. A removable tab is disposed between the distal end of the frame and the nose cone. The tab assists in maintaining the position of the nose cone relative to the distal end of the frame.
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公开(公告)号：US20170079793A1
公开(公告)日：2017-03-23
申请号：US15263204
申请日：2016-09-12
发明人： David Maimon , Michael R. Bialas , Mindy Lee Ann Black , Tamir S. Levi , Linda Thai , Yidong M. Zhu
CPC分类号： A61F2/2433 , A61F2/2418 , A61F2/958 , A61F2230/001
摘要： Disclosed herein are embodiments of a balloon shaped to have one or more enlarged regions to selectively increase expansion forces on an implant. For example, the balloon may have a central portion that is enlarged to exert more force on the center of a stent-mounted prosthetic heart valve. This overcomes the stent-mounted prosthetic heart valve's tendency to expand with flared ends. This forms a more cylindrical or barrel shaped stent frame during expansion of the balloon—reducing or eliminating the instance wherein the cylindrical stent frame has flared ends. Alternatively, the balloon may have conical flares placed to cause or enhance flared ends of the cylindrical implant to enhance its anchoring capabilities.
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公开(公告)号：US20240216139A1
公开(公告)日：2024-07-04
申请号：US18607271
申请日：2024-03-15
发明人： Nicholas Brandon Aders , Kristen Hicks , Gil Senesh , Michael R. Bialas , Tung T. Le , Sean Chow , Thanh Huy Le
CPC分类号： A61F2/2433 , B23P11/005 , A61F2/9524 , A61F2240/001 , A61F2250/0039
摘要： Devices and methods for crimping a prosthetic heart valve onto a delivery device are described. In some embodiments, valves are crimped over an inflatable balloon and between proximal and distal shoulders mounted on a shaft inside the balloon. Crimping methods can include multiple compression steps with the valve located in different axial positions relative to the crimping jaws at each different step. In some methods, the valve may extend partially outside of the crimping jaws during certain crimping steps, such that the crimping force is only applied to the part of the valve that is inside the jaws. Exemplary crimping devices can include two or more adjacent sets of jaws that close down to different inner diameters, such that different parts of a valve get compressed to different outer diameters at the same time during a single crimping step.
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8.发明公开公开(公告)号：US20230190456A1
公开(公告)日：2023-06-22
申请号：US18113833
申请日：2023-02-24
发明人： Michael R. Bialas
IPC分类号： A61F2/24
CPC分类号： A61F2/24 , A61F2/2433
摘要： Methods and systems for rotationally aligning a commissure of a prosthetic heart valve with a commissure of a native valve are disclosed. In some examples, a method can comprise advancing a distal end portion of a delivery apparatus toward a native valve; visualizing under fluoroscopy and for a selected imaging view, a position of a radiopaque marker on the distal end portion relative to a guidewire extending through the delivery apparatus, the marker circumferentially offset from a selected commissure of the radially compressed prosthetic valve by a predetermined amount that is determined based on the selected imaging view; rotating the delivery apparatus until the marker is centered along the guidewire; and advancing the distal end portion into the native valve and inflating the balloon to radially expand and implant the prosthetic valve in the native valve such that the selected commissure is aligned with a commissure of the native valve.
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公开(公告)号：US11234816B2
公开(公告)日：2022-02-01
申请号：US16439406
申请日：2019-06-12
摘要： In a particular embodiment, the present disclosure provides a delivery apparatus for delivering a medical device. The delivery apparatus includes an elongated component with an engagement portion and a disengagement portion. Rotating the elongated component in a first rotational direction moves the travelling component along the engagement portion in a first axial direction. When the travelling component is located within the disengagement portion, continued rotation of the elongated component in the first rotational direction does not cause further movement of the travelling component in the first axial direction. A biasing member is located proximate the disengagement portion and urges the travelling component to reengage the engagement portion. The delivery apparatus can reduce or prevent damage to the delivery apparatus, or a patient with whom the delivery apparatus is used, by reducing or eliminating torque transfer from the travelling component to an end of the elongated component.
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10.发明申请公开(公告)号：US20210322146A1
公开(公告)日：2021-10-21
申请号：US17365418
申请日：2021-07-01
发明人： Vipul P. Rajpara , Darshin S. Patel , Michael R. Bialas , Brian R. Lowry , Russ Hunton , Arvin T. Chang
摘要： A valve cover apparatus for use in a medical assembly including a prosthetic valve and a valve delivery apparatus. The valve cover apparatus includes a housing, a chamber disposed within the housing for receiving a prosthetic heart valve in an at least partially expanded state, a tapered surface defining a portion of the chamber, and a lock ring that is axially movable over at least a portion of the housing between a locked position and an unlocked position. The tapered surface is enables loading and/or guiding of the prosthetic heart valve from the chamber of the valve cover apparatus into a delivery sheath of the valve delivery apparatus and transition the prosthetic heart valve to a radially compressed state. The lock ring restricts movement of the valve cover relative to the delivery sheath when in the locked position, and enables movement of the valve cover when in the unlocked position.
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