Globus Medical, Inc.

National Semiconductor Corporation

Robert J LeBoeuf, Ii

James Yau

Neil Robert Crawford

Zachary Olenio

Nicholas A Theodore

Mitchell A Foster

Timothy Moulton

Jeffrey Forsyth

Kevin Zhang

Chris Major

David Cleary

Matthew Louis Courcy

Nobert Johnson

Apparatus, systems, and methods for detecting the presence of a metallic surgical instrument. A metal detector for detecting insertion of a metallic surgical device into a hollow tube may include a switch, resonant circuit and a controller. The resonant circuit has a capacitor and a coil mounted to the hollow tube. The controller turn on the switch for a preselected time to temporarily provide a current to the resonant circuit and analyzes a resulting decaying voltage waveform originating from the resonant circuit when the switch is turned off in order to determine the presence and longitudinal depth of the metallic surgical device in the hollow tube.

Metal detector for detecting insertion of a surgical device into a hollow tube

Embodiments of the present disclosure provide a surgical robot system may include an end-effector element configured for controlled movement and positioning and tracking of surgical instruments and objects relative to an image of a patient's anatomical structure. In some embodiments the end-effector may be tracked by surgical robot system and displayed to a user. In some embodiments the end-effector element may be configured to restrict the movement of an instrument assembly in a guide tube. In some embodiments, the end-effector may contain structures to allow for magnetic coupling to a robot arm and/or wireless powering of the end-effector element. In some embodiments, tracking of a target anatomical structure and objects, both in a navigation space and an image space, may be provided by a dynamic reference base located at a position away from the target anatomical structure.

Surgical tool systems and methods

An improved device for regenerating an infrared signal transmitted over the air for use in detecting a 3-dimensional position of an object. The regeneration device includes an infrared signal transmitter and detector that receives from the object a responsive infrared signal in response to the infrared signal transmitted by the transmitter. A low pass filter receives the responsive infrared signal from the detector and outputs a low-pass filtered signal. A comparator compares the output of the infrared signal detector and output of the low pass filter and generates an output representing a logic state based on the comparison.

Infrared signal based position recognition system for use with a robot-assisted surgery

A common mode controller circuit () for maintaining a common mode voltage (Vcm) at a first node () and a second node () in a sample-and-hold circuit receiving a pair of AC coupled differential input signals (Vinp, Vinn) includes first and second resistors (R/R) and third and fourth resistors (R/R), each set of resistors connected in series between the first and second nodes, and a differential amplifier (A) having an inverting input terminal coupled to a third node () between the first and second resistors, a non-inverting input terminal coupled to a reference voltage (Vref) and an output terminal coupled to a fourth node () between the third and fourth resistors. The common mode voltage is sampled at the third node and the differential amplifier provides a sourcing output current indicative of the difference between the sampled common mode voltage and the reference voltage to drive the fourth node.

Common mode controller for a sample-and-hold circuit

A method for cascading a first amplifier stage and a second amplifier stage includes coupling the output terminal of the first amplifier stage to the power supply reference point of the second amplifier stage, modulating the power supply reference point of the second amplifier stage using the output current of the first amplifier stage, and generating a final output voltage at the output terminal of the second amplifier stage having a first voltage value relative to the power supply reference point of the first amplifier stage. The first voltage value is the sum of the output voltage of the first amplifier stage relative to its own power supply reference point and the output voltage of the second amplifier stage relative to its own power supply reference point. In one embodiment, the power supply reference point is the ground reference of the power source in the amplifier stage.

Method for cascoding amplifiers by modulating isolated power supply reference points

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Salem, NH, United States of America

Robert J LeBoeuf, Ii