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Patent

Medical apparatus system having optical fiber load sensing capability

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TLDR
In this paper, a microprocessor can be configured to resolve a multi-dimensional force vector corresponding to the contact force applied to the distal extremity of a vessel or organ.
Abstract
An apparatus and method for diagnosis or treatment of a vessel or organ. The apparatus includes a deformable body such as a catheter having a tissue ablation end effector and an irrigation channel in fluid communication therewith. At least two sensors are disposed within a distal extremity of the deformable body, the sensors being responsive to a wave in a specified range of frequency to detect deformations resulting from a contact force applied to the distal extremity. A microprocessor can be operatively coupled with the sensors to receive outputs therefrom, the microprocessor being configured to resolve a multi-dimensional force vector corresponding to the contact force. In one embodiment, the sensors are fiber Bragg grating sensors, and the wave is injected into the fiber Bragg grating strain sensors from a laser diode.

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Citations
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References
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Journal ArticleDOI

Updated worldwide survey on the methods, efficacy, and safety of catheter ablation for human atrial fibrillation

TL;DR: When analyzed in a large number of electrophysiology laboratories worldwide, catheter ablation of AF shows to be effective in ≈80% of patients after 1.3 procedures per patient, with ≈70% of them not requiring further antiarrhythmic drugs during intermediate follow-up.
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Image-directed robotic system for precise robotic surgery including redundant consistency checking

TL;DR: In this article, a robotic surgical system with a multiple degree of freedom manipulator arm and a surgical tool is presented, where the manipulator is coupled to a controller for controllably positioning the surgical tool within a 3D coordinate system.
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Robotic catheter system and methods

TL;DR: In this article, a flexible sheath instrument, a flexible guide instrument, and a tool are described, and the tool is threaded through the guide instrument working lumen, while the sheath and guide instruments are independently controllable relative to each other.
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Tissue biopsy and treatment apparatus and method

TL;DR: In this paper, the authors describe a tissue biopsy and treatment apparatus that comprises an elongated delivery device that is positionable in tissue and includes a lumen, and a sensor array having a plurality of resilient members.