Medical needle for use in ultrasound imaging and method of enhan

Details Medical needle for use in ultrasound imaging and method of enhan Medical needle for use in ultrasound imaging and method of enhan

1995-03-09

1996-08-27

Manuel, George

Surgery

Truss

Pad

A61B 812

Patent

active

055491120

ABSTRACT:
A needle inserted into body tissue is rendered visible to a Doppler ultrasound imager by generating a longitudinal oscillation of the fluid column in the needle barrel by means of a transducer which is energized by a signal of frequency 100 Hz to 2 kHz, for example. An image of the needle tip is displayed on a screen.

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patent: 4411657 (1983-10-01), Galindo
patent: 4413993 (1983-11-01), Guttman
patent: 4790830 (1988-12-01), Hamacher
patent: 4838877 (1989-06-01), Massau
patent: 5046503 (1991-09-01), Schneiderman
patent: 5095910 (1992-03-01), Powers
patent: 5131394 (1992-07-01), Gehlbach
patent: 5360416 (1994-11-01), Ausherman et al.
Ultrasonics, vol. 26, No. 1, Jan. 26, 1988, Guildford, Surrey, Gr. Britain, pp. 27-30.

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