US 12,072,316 B2
Method for producing a lens and ultrasound device comprising the lens
Noe Jimenez Gonzalez, Madrid (ES); Francisco Camarena Femenia, Valencia (ES); Sergio Jimenez Gambin, Valencia (ES); and Jose Maria Benlloch Baviera, Madrid (ES)
Assigned to Consejo Superior de Investigaciones Cientificas (CSIC), Madrid (ES); and Universitat Politecnica de Valencia, Valencia (ES)
Appl. No. 17/287,715
Filed by Consejo Superior de Investigaciones Cientificas (CSIC), Madrid (ES); and Universitat Politecnica de Valencia, Valencia (ES)
PCT Filed Oct. 21, 2019, PCT No. PCT/ES2019/070713
§ 371(c)(1), (2) Date Apr. 22, 2021,
PCT Pub. No. WO2020/084181, PCT Pub. Date Apr. 30, 2020.
Claims priority of application No. ES201831022 (ES), filed on Oct. 22, 2018.
Prior Publication US 2021/0396712 A1, Dec. 23, 2021
Int. Cl. G01N 29/06 (2006.01); A61N 7/02 (2006.01); B29D 11/00 (2006.01); G10K 11/30 (2006.01); A61N 7/00 (2006.01)
CPC G01N 29/0663 (2013.01) [A61N 7/02 (2013.01); B29D 11/00009 (2013.01); G10K 11/30 (2013.01); A61N 2007/0004 (2013.01); A61N 2007/006 (2013.01); Y10T 29/49005 (2015.01)] 19 Claims
OG exemplary drawing
 
1. A method for producing a lens for an ultrasound apparatus, the method comprising the steps of
providing a barrier tissue model, a soft tissue model surrounded by the barrier tissue model, and a coupling medium model wherein the barrier tissue model presents an acoustic impedance different from that of soft tissue;
choosing a source point situated in the coupling medium model;
choosing a predetermined wave frequency and wavelength, the predetermined frequency being comprised between 100 kHz and 20 MHz and the predetermined wavelength being determined by the predetermined frequency and a velocity of propagation of the wave in the coupling medium model;
providing a treatment volume situated inside the barrier tissue model;
providing a plurality of nodes distributed inside the treatment volume;
simulating the emission of a spherical wave from each of the nodes of the plurality of nodes, creating a simulated wave front resulting from the superposition of the spherical waves, each spherical wave requiring an amplitude and a phase, there being at least two nodes with different amplitudes or phases, each spherical wave having the predetermined frequency;
receiving the simulated wave front on a receiving surface which contains the source point;
processing the results received on the receiving surface;
on the basis of the processed results, designing a holographic lens surface which can generate a wave pattern equivalent to the simulated, time-reversed, wave front when it receives a wave from a planar, single-element emitter situated at the source point with the predetermined wave frequency and wavelengths.