Passive ultrasound needle probe locator
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United States of America Patent
Stats
-
Jan 31, 1984
Grant Date -
N/A
app pub date -
Jan 7, 1982
filing date -
Jan 7, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A solid steel stylette is carried coaxially within a hollow biopsy needle, with the void therebetween filled and packed with several layers of hollow plastic microspheres having an approximate diameter of 0.80 millimeters. Ultrasound energy impinging on the needle tip is converted to pressure waves which are conveyed back up the stylette, there to be converted to electrical energy for coordination with the image of the system. The packing of hollow plastic microspheres acoustically insulates the stylette from the needle.
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Family
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Cited Art Landscape
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