Patent
Magnetic linear actuator for deployable catheter tools
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TLDR
Using the linear forces provided by an electromagnetic solenoid applied near the distal end of a medical catheter, various surgical instruments can be actuated or deployed for use in interventional medicine as discussed by the authors.Abstract:
Using the linear forces that are provided by an electromagnetic solenoid applied near the distal end of a medical catheter (26), various surgical instruments can be actuated or deployed for use in interventional medicine. The linear actuator (101) uses the principles of magnetic repulsion and attraction as a means for moving a bobbin (13) that can be attached to various types of moving components that translate linear movements into the actuation of a tool that is attached to the linear actuator. Using independent solenoid coils (14), movement modality is increased from two possible positions to three.read more
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References
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Repositioning and reorientation of master/slave relationship in minimally invasive telesurgery
TL;DR: In this article, the authors present robotic surgical systems which allow selectable independent repositioning of an input handle of a master controller and/or a surgical end effector without corresponding movement of the other.
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Magnetic determination of position and orientation
TL;DR: In this article, a magnetic position and orientation determining system using magnetic fields, desirably comprising uniform fields from Helmholtz coils (34, 36, 38) positioned on opposite sides of a sensing volume and gradient fields generated by the same coils, is presented.
Patent
Methods and apparatus for transmitting force to an end effector over an elongate member
TL;DR: In this paper, the authors describe an approach for conveying or transmitting force or energy to a medical end-effector coupled to a flexible or rigid shaft, where the end effector may be actuable via various force transmission elements and/or mechanisms.
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Tracking system to follow the position and orientation of a device with radiofrequency fields
TL;DR: In this article, a tracking system was proposed to measure the position and orientation of an invasive device such as a catheter using radiofrequency signals emitted by a low power RF source, which can be detected by an array of receive coils distributed around a region of interest.
Patent
Catheter depth, position and orientation location system
TL;DR: In this article, a system for externally locating a sensor in tissue, comprising an external probe including at least first and second electromagnetic output coils (12) with non-parallel longitudinal axes; and an output coil (2) driver for alternately energizing the first or second output coils, for generating a time-varying magnetic field which penetrates the patient's skin.