MRI Compatible Positioning Arm

Scientists at Johns Hopkins have developed a family of passive positioning arms designed to carry a robot, instrument, or other tool at its distal end. The prototype has full six degrees of freedom (3 translation and 3 rotation) when unlocked, and the rigidity when locked to hold 100N at its fully extended length. A completely nonmetallic variation of the of the arm was also designed for positioning robotic effectors in the high magnetic field of Magnetic Resonance Imaging (MRI) machines. Description (Set) Proposed Use (Set) This novel positioning arm has the following advantages: - The geometry of the arm yields the full six degree-of-freedom positioning of the end-effector - The method for transmitting force via a cable to lock all joints simultaneously - The method for cabling for the end effector to be passed through the body of the arm - For the MRI compatible version, the method for achieving the above with all non-magnetic materials while maintaining high stiffness, compact size, and ease of use Patent (Set) 6,857,609

Type of Offer: Licensing

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