Method for the localized destruction of soft structures using negative pressure elastic waves
AssigneeEDAP International, S.A.
InventorJacques Dory
Life of this patent
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Abstract
The method for the localized destruction of soft structures using negative pressure elastic waves, comprises the steps of generating at a predetermined rate comprised between a few Hz and 3 KHz, trains of elastic pressure waves, said waves having a frequency between 0.3 and 10 MHz, each of said trains having a duration between 1 microsecond and 1 millisecond and comprising negative going oscillations; focussing said waves into a beam; transmitting and directing said beam onto the target through a liquid coupling medium and adjusting the power of said elastic pressure wave at a predetermined value.
Claims3
A method for the localized destruction of a target having a soft structure, comprising the steps of:
- i) generating, at a predetermined rate, trains of elastic pressure waves, said waves having a frequency between 3.0 and 10 MHz, each of said trains having a duration between 1 microsecond and 1 millisecond and comprising negative going oscillations;
- ii) focussing said waves into a beam;
- iii) transmitting and directing said beam onto the target and
- iv) adjusting the power of said trains of elastic pressure waves to a particular value which allows reflected energy from said target to be displayed as echoes.
Dependencies are inferred from the claim text.