Ultrasonic Method And Apparatus For Measuring Intracranial Contents Volume Change
First Claim
Patent Images
1. A device for measuring intracranial contents'"'"' volume change of a patient'"'"'s head comprising:
- a first gel pad and a second gel pad positioned on either side of the patient'"'"'s head respectively; and
a first ultrasonic transducer and a second ultrasonic transducer positioned adjacent to said first and second gel pads respectively;
said first and second ultrasonic transducers each comprising;
a piezoceramic disc; and
a piezoceramic ring encircling said piezoceramic disc.
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Accused Products
Abstract
An ultrasonic method for indicating a characteristic of intracranial components'"'"' volume changes includes the transmission of broadband ultrasound from a transmitting transducer positioned on one side of a human head to a receiving transducer located on another side of the human head with decomposition of the received signal into narrowband components and determination therefrom of group delay, phase angle and attenuation as a basis for derivation of the characteristic of the intracranial media.
32 Citations
33 Claims
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1. A device for measuring intracranial contents'"'"' volume change of a patient'"'"'s head comprising:
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a first gel pad and a second gel pad positioned on either side of the patient'"'"'s head respectively; and a first ultrasonic transducer and a second ultrasonic transducer positioned adjacent to said first and second gel pads respectively; said first and second ultrasonic transducers each comprising; a piezoceramic disc; and a piezoceramic ring encircling said piezoceramic disc. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A device for measuring intracranial contents'"'"' volume change of a patient'"'"'s head comprising:
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a first gel pad positioned on a first side of the patient'"'"'s head; a second gel pad positioned on a second side of the patient'"'"'s head; a first ultrasonic transducer positioned adjacent to said first gel pad, said first ultrasonic transducer including; a first piezoceramic disc; and a first piezoceramic ring encircling said first piezoceramic disc; a second ultrasonic transducer positioned adjacent to said second gel pad, said second ultrasonic transducer including; a second piezoceramic disc; and a second piezoceramic ring encircling said second piezoceramic disc; a first scanner positioned adjacent to said first ultrasonic transducer; a second scanner positioned adjacent to said second ultrasonic transducer; a time division multiplexer coupled to said first and second ultrasonic transducers; a computer coupled to said time division multiplexer; and a display coupled to said computer. - View Dependent Claims (18, 19, 20)
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21. A method for measuring intracranial contents'"'"' volume change of a patient'"'"'s head comprising the steps of:
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positioning a first gel pad on a first side of the patient'"'"'s head; positioning a second gel pad on a second side of the patient'"'"'s head; positioning a first ultrasonic transducer adjacent to the first gel pad, the first ultrasonic transducer having a first piezoceramic disc and a first piezoceramic ring encircling the first piezoceramic disc; positioning a second ultrasonic transducer adjacent to the second gel pad, the second ultrasonic transducer having a second piezoceramic disc and a second piezoceramic ring encircling the second piezoceramic disc; generating first and second ultrasonic pulses with the first and second ultrasonic transducers respectively; transmitting the first ultrasonic pulse through the patient'"'"'s head at a first signal transmission direction; transmitting the second ultrasonic pulse through the patient'"'"'s head at a second signal transmission direction; receiving a first ultrasonic echo pulse with the first ultrasonic transducer at a first echo signal receiving direction; and receiving a second ultrasonic echo pulse with the second ultrasonic transducer at a second echo signal receiving direction. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 32)
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31. A method for measuring intracranial contents'"'"' volume change of a patient'"'"'s head comprising the steps of:
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generating a first ultrasonic pulse with a first ultrasonic transducer; transmitting the first ultrasonic pulse through a patients head; generating a second ultrasonic pulse with a second ultrasonic transducer, the second ultrasonic transducer positioned on a substantially opposite side of the patient'"'"'s head from the first ultrasonic transducer; transmitting the second ultrasonic pulse through a patients head; generating a first electrical pulse corresponding to the transmitted first ultrasonic pulse; measuring a first echo pulse corresponding to an echo signal of the transmitted first ultrasonic pulse; generating a first echo electrical pulse corresponding to the measured first echo pulse; generating a second electrical pulse corresponding to the transmitted second ultrasonic pulse; measuring a second echo pulse corresponding to an echo signal of the transmitted second ultrasonic pulse; and generating a second echo electrical pulse corresponding to the measured second echo pulse. - View Dependent Claims (33)
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Specification