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1. (WO2017186796) CMUT TRANSDUCER ARRAY WITH IMPEDANCE MATCHING LENS

Pub. No.:    WO/2017/186796    International Application No.:    PCT/EP2017/059935
Publication Date: Fri Nov 03 00:59:59 CET 2017 International Filing Date: Thu Apr 27 01:59:59 CEST 2017
IPC: B06B 1/02
G10K 11/02
A61B 8/00
G10K 11/30
Applicants: KONINKLIJKE PHILIPS N.V.
Inventors: SUDOL, Wojtek
WICKLINE, Kevin, Grayson
SONG, Junho
Title: CMUT TRANSDUCER ARRAY WITH IMPEDANCE MATCHING LENS
Abstract:
A CMUT transducer array probe has an impedance matching lens with a low impedance silicone elastomer proximal to the CMUT array and providing a majority of the thickness of the lens. The low impedance elastomer is overlaid with a gradated impedance matching layer. The gradated impedance matching layer may provide a progressively increasing impedance from that of the low impedance elastomer to that of tissue, or a stepwise progression of layers of discrete impedances which range from the impedance of the low impedance elastomer to that of tissue.