Disposable wand and sensor for orthopedic alignment
First Claim
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1. A sensor for a surgical orthopedic alignment system comprising:
- at least two ultrasonic transducers located at predetermined positions relative to each other on the sensor;
an accelerometer configured to identify axial tilt; and
a controller operatively coupled to the at least two ultrasonic transducers and the accelerometer, where at least one of the at least two ultrasonic transducers are configured to measure ultrasonic signals, where the measured ultrasonic signals are used to calculate a time of flight, where the time of flight and a differential time of flight is used to calculate a location of an object in three-dimensional space within a surgical field, where the sensor is configured to be attached to a portion of the object, where the object is a portion of a muscular skeletal system, where the location of the object can be used by a processor to determine alignment of the muscular skeletal system and where a trigger system is configured to initiate a measurement process where a trigger signal is faster than an ultrasonic signal.
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Abstract
A disposable tool suitable for use in orthopedic alignment that registers points of interest on a first and second bone and transmits location data related to the points of interest to the sensor to assess orthopedic alignment with the points of interest. A display can report and visually display alignment information in real-time.
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Citations
19 Claims
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1. A sensor for a surgical orthopedic alignment system comprising:
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at least two ultrasonic transducers located at predetermined positions relative to each other on the sensor; an accelerometer configured to identify axial tilt; and a controller operatively coupled to the at least two ultrasonic transducers and the accelerometer, where at least one of the at least two ultrasonic transducers are configured to measure ultrasonic signals, where the measured ultrasonic signals are used to calculate a time of flight, where the time of flight and a differential time of flight is used to calculate a location of an object in three-dimensional space within a surgical field, where the sensor is configured to be attached to a portion of the object, where the object is a portion of a muscular skeletal system, where the location of the object can be used by a processor to determine alignment of the muscular skeletal system and where a trigger system is configured to initiate a measurement process where a trigger signal is faster than an ultrasonic signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A wand for a surgical orthopedic alignment system comprising:
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at least two ultrasonic transducers located at predetermined positions relative to each other on the wand; a trigger system configured to initiate a measurement process and where a trigger signal is faster than an ultrasonic signal; an accelerometer configured to identify axial tilt; and a controller operatively coupled to the at least two ultrasonic transducers and the accelerometer, where at least one of the at least two ultrasonic transducers emits ultrasonic signals, where the emitted ultrasonic signals are measured and used to calculate a time of flight and a differential time of flight, where the time of flight and a differential time of flight is used to calculate a location of an object in three-dimensional space within a surgical field, and where the wand is configured to be line of sight to the sensor. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A surgical orthopedic alignment system comprising:
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a wand having at least two ultrasonic transducers to transmit signals corresponding to a location of a muscular skeletal system in three-dimensional space where the wand includes an accelerometer configured to measure axial tilt; a sensor having at least two ultrasonic transducers located at predetermined positions relative to each other to receive signals from the wand, where the surgical orthopedic alignment system is configured to measure a time of flight and a differential time flight of ultrasonic signals sent from the wand to the sensor, where the wand is line of sight to the sensor, where the sensor includes an accelerometer configured to measure axial tilt, and where the sensor is configured to be attached to a portion of the muscular skeletal system; a trigger system coupled to the wand and the sensor configured to initiate a measurement process where a trigger signal is faster than the ultrasonic signals; and a mount to retain and hold the wand in a second predetermined location where the wand, sensor, and mount are within a surgical field. - View Dependent Claims (18, 19)
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Specification