Koninklijke Philips Corporation N.v.

Junho Song

Wojtek Sudol

Richard Edward Davidsen

George Anthony Brock-Fisher

Bout Marcelis

Mike Lavy

Anjali Saini

Hyunggyun Lee

Carl Dean Herickhoff

Edward Chan

Mehdi Hejazi Dehaghani

Steven Michael Tavoletti

An imaging assembly for an intraluminal device is provided. In one embodiment, the imaging assembly includes: an array of ultrasound transducer elements spaced apart by air kerfs; a plurality of buffer elements surrounding the array of ultrasound transducer elements, wherein the plurality of buffer elements are spaced apart by gaps; and a sealing material filling portions of the gaps between the plurality of buffer elements.

Transducer arrays with air kerfs for intraluminal imaging

The invention relates to a capacitive micro-machined ultrasound transducer (CMUT) cell () comprising a cell floor () having a first electrode (); a cell membrane () having a second electrode (') which opposes the first electrode and vibrates during transmission or reception of acoustic energy; a transmitter/receiver coupled to the first and second electrodes which causes the cell membrane to vibrate at an acoustic frequency and/or receives signals at an acoustic frequency; and an acoustic lens (), overlaying the cell membrane, and having an inner surface opposing the cell membrane and an outer, patient-facing surface. According to the present invention the acoustic lens comprises at least one layer of a material selected from the group of: polybudatiene, polyether block amide (PEBAX), polydimethylsiloxane (PDMS) and buthylrubber.

Capacitive micro-machined ultrasound transducer cell

An ultrasound transducer assembly () is disclosed comprising a plurality of transducer elements () for transmitting and receiving ultrasound waves () each having a substrate () and a flexible membrane () disposed in a distance from a substrate. An AC voltage control unit () is provided for controlling an AC voltage provided to each of the transducer elements, and a DC voltage control unit () for controlling a DC bias voltage provided to the transducer elements in order to bring the flexible membranes in a collapse mode into contact with the substrate. The DC voltage control unit is adapted to disconnect the DC bias voltage from the transducer elements temporarily during the operation of the ultrasound transducer assembly to limit the collapse mode.

Ultrasound transducer assembly and method for transmitting and receiving ultrasound waves

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Eindhoven, Netherlands

Junho Song