The Experts below are selected from a list of 84 Experts worldwide ranked by ideXlab platform
David H. Liang - One of the best experts on this subject based on the ideXlab platform.
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Laser-machined Shape memory alloy actuators for active catheters
IEEE ASME Transactions on Mechatronics, 2007Co-Authors: Alexander T. Tung, Günter Niemeyer, Byong-ho Park, David H. LiangAbstract:Medicine is undergoing a transformation toward minimally invasive surgery, and with it comes an increasing need for more precise miniature instruments to accurately execute complex procedures. In catheter-based surgeries, the physician must control the tip of the catheter from a distal point outside the body, which makes it difficult to achieve precise manipulative control. Providing actuation local to the desired point of manipulation will greatly improve the physician's ability to intervene on diseases in a minimally invasive fashion. We present a new actuator made from laser Machining Shape memory alloy (SMA) tubes for use in an active steerable catheter. Using finite-element analysis and experimental verification, we have designed a 1.5-mm-long SMA actuator cut from 1.27-mm-diameter NiTi tubing that exhibits good fatigue properties, and can produce forces of 12 N at 20% elongation. We use an iterative rapid design process, so that many actuator geometries can be tested quickly to achieve the desired mechanical properties without complex material models. In this paper, we describe the design and testing of the actuator, and verify its force, elongation, and fatigue properties.
Alexander T. Tung - One of the best experts on this subject based on the ideXlab platform.
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Laser-machined Shape memory alloy actuators for active catheters
IEEE ASME Transactions on Mechatronics, 2007Co-Authors: Alexander T. Tung, Günter Niemeyer, Byong-ho Park, David H. LiangAbstract:Medicine is undergoing a transformation toward minimally invasive surgery, and with it comes an increasing need for more precise miniature instruments to accurately execute complex procedures. In catheter-based surgeries, the physician must control the tip of the catheter from a distal point outside the body, which makes it difficult to achieve precise manipulative control. Providing actuation local to the desired point of manipulation will greatly improve the physician's ability to intervene on diseases in a minimally invasive fashion. We present a new actuator made from laser Machining Shape memory alloy (SMA) tubes for use in an active steerable catheter. Using finite-element analysis and experimental verification, we have designed a 1.5-mm-long SMA actuator cut from 1.27-mm-diameter NiTi tubing that exhibits good fatigue properties, and can produce forces of 12 N at 20% elongation. We use an iterative rapid design process, so that many actuator geometries can be tested quickly to achieve the desired mechanical properties without complex material models. In this paper, we describe the design and testing of the actuator, and verify its force, elongation, and fatigue properties.
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Design and Fabrication of Tubular Shape Memory Alloy Actuators for Active Catheters
The First IEEE RAS-EMBS International Conference on Biomedical Robotics and Biomechatronics 2006. BioRob 2006., 2006Co-Authors: Alexander T. Tung, Günter Niemeyer, Byong-ho Park, A. Koolwal, B. Nelson, D LiangAbstract:There is a growing trend in medicine toward minimally invasive surgery, and with it comes an increasing need for precise miniature instruments to achieve accurate positioning for complex procedures. Catheter-based surgeries in particular suffer from a lack of active steering of the interventional device. We present a new actuator made by laser Machining Shape memory alloy (SMA) tubes for use in an active steerable catheter. Using finite element analysis and experimental verification, we have designed an SMA actuator cut from 1.27 mm diameter NiTi tubing that exhibits good fatigue properties and can produce forces up to 2 N at 20% elongation. In this paper, we describe the design and testing of the actuator, as well as its characterization to verify its mechanical properties
Byong-ho Park - One of the best experts on this subject based on the ideXlab platform.
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Laser-machined Shape memory alloy actuators for active catheters
IEEE ASME Transactions on Mechatronics, 2007Co-Authors: Alexander T. Tung, Günter Niemeyer, Byong-ho Park, David H. LiangAbstract:Medicine is undergoing a transformation toward minimally invasive surgery, and with it comes an increasing need for more precise miniature instruments to accurately execute complex procedures. In catheter-based surgeries, the physician must control the tip of the catheter from a distal point outside the body, which makes it difficult to achieve precise manipulative control. Providing actuation local to the desired point of manipulation will greatly improve the physician's ability to intervene on diseases in a minimally invasive fashion. We present a new actuator made from laser Machining Shape memory alloy (SMA) tubes for use in an active steerable catheter. Using finite-element analysis and experimental verification, we have designed a 1.5-mm-long SMA actuator cut from 1.27-mm-diameter NiTi tubing that exhibits good fatigue properties, and can produce forces of 12 N at 20% elongation. We use an iterative rapid design process, so that many actuator geometries can be tested quickly to achieve the desired mechanical properties without complex material models. In this paper, we describe the design and testing of the actuator, and verify its force, elongation, and fatigue properties.
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Design and Fabrication of Tubular Shape Memory Alloy Actuators for Active Catheters
The First IEEE RAS-EMBS International Conference on Biomedical Robotics and Biomechatronics 2006. BioRob 2006., 2006Co-Authors: Alexander T. Tung, Günter Niemeyer, Byong-ho Park, A. Koolwal, B. Nelson, D LiangAbstract:There is a growing trend in medicine toward minimally invasive surgery, and with it comes an increasing need for precise miniature instruments to achieve accurate positioning for complex procedures. Catheter-based surgeries in particular suffer from a lack of active steering of the interventional device. We present a new actuator made by laser Machining Shape memory alloy (SMA) tubes for use in an active steerable catheter. Using finite element analysis and experimental verification, we have designed an SMA actuator cut from 1.27 mm diameter NiTi tubing that exhibits good fatigue properties and can produce forces up to 2 N at 20% elongation. In this paper, we describe the design and testing of the actuator, as well as its characterization to verify its mechanical properties
Günter Niemeyer - One of the best experts on this subject based on the ideXlab platform.
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Laser-machined Shape memory alloy actuators for active catheters
IEEE ASME Transactions on Mechatronics, 2007Co-Authors: Alexander T. Tung, Günter Niemeyer, Byong-ho Park, David H. LiangAbstract:Medicine is undergoing a transformation toward minimally invasive surgery, and with it comes an increasing need for more precise miniature instruments to accurately execute complex procedures. In catheter-based surgeries, the physician must control the tip of the catheter from a distal point outside the body, which makes it difficult to achieve precise manipulative control. Providing actuation local to the desired point of manipulation will greatly improve the physician's ability to intervene on diseases in a minimally invasive fashion. We present a new actuator made from laser Machining Shape memory alloy (SMA) tubes for use in an active steerable catheter. Using finite-element analysis and experimental verification, we have designed a 1.5-mm-long SMA actuator cut from 1.27-mm-diameter NiTi tubing that exhibits good fatigue properties, and can produce forces of 12 N at 20% elongation. We use an iterative rapid design process, so that many actuator geometries can be tested quickly to achieve the desired mechanical properties without complex material models. In this paper, we describe the design and testing of the actuator, and verify its force, elongation, and fatigue properties.
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Design and Fabrication of Tubular Shape Memory Alloy Actuators for Active Catheters
The First IEEE RAS-EMBS International Conference on Biomedical Robotics and Biomechatronics 2006. BioRob 2006., 2006Co-Authors: Alexander T. Tung, Günter Niemeyer, Byong-ho Park, A. Koolwal, B. Nelson, D LiangAbstract:There is a growing trend in medicine toward minimally invasive surgery, and with it comes an increasing need for precise miniature instruments to achieve accurate positioning for complex procedures. Catheter-based surgeries in particular suffer from a lack of active steering of the interventional device. We present a new actuator made by laser Machining Shape memory alloy (SMA) tubes for use in an active steerable catheter. Using finite element analysis and experimental verification, we have designed an SMA actuator cut from 1.27 mm diameter NiTi tubing that exhibits good fatigue properties and can produce forces up to 2 N at 20% elongation. In this paper, we describe the design and testing of the actuator, as well as its characterization to verify its mechanical properties
D Liang - One of the best experts on this subject based on the ideXlab platform.
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Design and Fabrication of Tubular Shape Memory Alloy Actuators for Active Catheters
The First IEEE RAS-EMBS International Conference on Biomedical Robotics and Biomechatronics 2006. BioRob 2006., 2006Co-Authors: Alexander T. Tung, Günter Niemeyer, Byong-ho Park, A. Koolwal, B. Nelson, D LiangAbstract:There is a growing trend in medicine toward minimally invasive surgery, and with it comes an increasing need for precise miniature instruments to achieve accurate positioning for complex procedures. Catheter-based surgeries in particular suffer from a lack of active steering of the interventional device. We present a new actuator made by laser Machining Shape memory alloy (SMA) tubes for use in an active steerable catheter. Using finite element analysis and experimental verification, we have designed an SMA actuator cut from 1.27 mm diameter NiTi tubing that exhibits good fatigue properties and can produce forces up to 2 N at 20% elongation. In this paper, we describe the design and testing of the actuator, as well as its characterization to verify its mechanical properties
