Passive ultrasound needle probe locator

Details Passive ultrasound needle probe locator Passive ultrasound needle probe locator

1982-01-07

1984-01-31

Cohen, Lee S.

Surgery

Truss

Pad

128653, 73644, A61B 1000

Patent

active

044283792

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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Sommer et al.; "A Phantom for Imaging Biological Fluids by Ultrasound and CT Scanning"; Ultrasound in Med. and Biol.; vol. 6, No. 2, 1980, pp. 135-140.
Time, Oct. 2, 1964, p. 96, "Surgery, Into the Eye with Ultrasound".

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