A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
A61B 8/00 (2006.01) A61B 8/08 (2006.01) A61B 10/00 (2006.01) G10K 11/22 (2006.01) A61B 17/00 (2006.01) A61B 19/00 (2006.01)
Patent
CA 2144387
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 energised by a signal of frequency 100Hz to 2kHz, for example. An image of the needle tip is displayed on a screen.
Cockburn Donald
Cockburn John Francis
Bereskin & Parr Llp
Cockburn Donald
Cockburn John Francis
LandOfFree
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