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Method and apparatus for locating vibrating devices

  • US 5,425,370 A
  • Filed: 03/23/1994
  • Issued: 06/20/1995
  • Est. Priority Date: 03/23/1994
  • Status: Expired due to Term
First Claim
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1. An ultrasonic imaging system including an ultrasonic imaging transducer which transmits send pulses and receives reflected pulses corresponding thereto for use in locating an interventional medical device within an interior region of a body under investigation, comprising:

  • vibrator means operative to transmit vibratory mechanical oscillation at a predetermined frequency of vibration to said interventional medical device and to cause said medical device to oscillate in accordance therewith, said interventional medical device completing one oscillation during a vibratory period;

    means for supplying a sequence of said send pulses separated in time by an interval determined as a function of said vibratory period to said imaging transducer; and

    processing means responsive to said reflected pulses for providing a signal indicative of the position of said medical device, wherein said processing means receives and stores a corresponding reflected pulse signal for each send pulse and compensates for static tissue signal components in said reflected pulses.

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